src/Buffer.cpp

   1 /**
   2  * \file Buffer.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Lars Gullik Bjønnes
   7  * \author Stefan Schimanski
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "Buffer.h"
  15
  16 #include "Author.h"
  17 #include "LayoutFile.h"
  18 #include "BiblioInfo.h"
  19 #include "BranchList.h"
  20 #include "buffer_funcs.h"
  21 #include "BufferList.h"
  22 #include "BufferParams.h"
  23 #include "Bullet.h"
  24 #include "Chktex.h"
  25 #include "Converter.h"
  26 #include "Counters.h"
  27 #include "Cursor.h"
  28 #include "CutAndPaste.h"
  29 #include "DispatchResult.h"
  30 #include "DocIterator.h"
  31 #include "BufferEncodings.h"
  32 #include "ErrorList.h"
  33 #include "Exporter.h"
  34 #include "Format.h"
  35 #include "FuncRequest.h"
  36 #include "FuncStatus.h"
  37 #include "IndicesList.h"
  38 #include "InsetIterator.h"
  39 #include "InsetList.h"
  40 #include "Language.h"
  41 #include "LaTeXFeatures.h"
  42 #include "LaTeX.h"
  43 #include "Layout.h"
  44 #include "Lexer.h"
  45 #include "LyXAction.h"
  46 #include "LyX.h"
  47 #include "LyXRC.h"
  48 #include "LyXVC.h"
  49 #include "output_docbook.h"
  50 #include "output.h"
  51 #include "output_latex.h"
  52 #include "output_xhtml.h"
  53 #include "output_plaintext.h"
  54 #include "Paragraph.h"
  55 #include "ParagraphParameters.h"
  56 #include "ParIterator.h"
  57 #include "PDFOptions.h"
  58 #include "Session.h"
  59 #include "SpellChecker.h"
  60 #include "sgml.h"
  61 #include "texstream.h"
  62 #include "TexRow.h"
  63 #include "Text.h"
  64 #include "TextClass.h"
  65 #include "TocBackend.h"
  66 #include "Undo.h"
  67 #include "VCBackend.h"
  68 #include "version.h"
  69 #include "WordLangTuple.h"
  70 #include "WordList.h"
  71
  72 #include "insets/InsetBibtex.h"
  73 #include "insets/InsetBranch.h"
  74 #include "insets/InsetInclude.h"
  75 #include "insets/InsetTabular.h"
  76 #include "insets/InsetText.h"
  77
  78 #include "mathed/InsetMathHull.h"
  79 #include "mathed/MacroTable.h"
  80 #include "mathed/InsetMathMacroTemplate.h"
  81 #include "mathed/MathSupport.h"
  82
  83 #include "graphics/GraphicsCache.h"
  84 #include "graphics/PreviewLoader.h"
  85
  86 #include "frontends/alert.h"
  87 #include "frontends/Delegates.h"
  88 #include "frontends/WorkAreaManager.h"
  89
  90 #include "support/lassert.h"
  91 #include "support/convert.h"
  92 #include "support/debug.h"
  93 #include "support/docstring_list.h"
  94 #include "support/ExceptionMessage.h"
  95 #include "support/FileMonitor.h"
  96 #include "support/FileName.h"
  97 #include "support/FileNameList.h"
  98 #include "support/filetools.h"
  99 #include "support/ForkedCalls.h"
 100 #include "support/gettext.h"
 101 #include "support/gzstream.h"
 102 #include "support/lstrings.h"
 103 #include "support/lyxalgo.h"
 104 #include "support/mutex.h"
 105 #include "support/os.h"
 106 #include "support/Package.h"
 107 #include "support/PathChanger.h"
 108 #include "support/Systemcall.h"
 109 #include "support/TempFile.h"
 110 #include "support/textutils.h"
 111 #include "support/types.h"
 112
 113 #include "support/bind.h"
 114
 115 #include <algorithm>
 116 #include <fstream>
 117 #include <iomanip>
 118 #include <map>
 119 #include <memory>
 120 #include <set>
 121 #include <sstream>
 122 #include <vector>
 123
 124 using namespace std;
 125 using namespace lyx::support;
 126 using namespace lyx::graphics;
 127
 128 namespace lyx {
 129
 130 namespace Alert = frontend::Alert;
 131 namespace os = support::os;
 132
 133 namespace {
 134
 135 int const LYX_FORMAT = LYX_FORMAT_LYX;
 136
 137 typedef map<string, bool> DepClean;
 138 typedef map<docstring, pair<InsetLabel const *, Buffer::References> > RefCache;
 139
 140 } // namespace
 141
 142
 143 // A storehouse for the cloned buffers.
 144 list<CloneList *> cloned_buffers;
 145
 146
 147 class Buffer::Impl
 148 {
 149 public:
 150         Impl(Buffer * owner, FileName const & file, bool readonly, Buffer const * cloned_buffer);
 151
 152         ~Impl()
 153         {
 154                 delete preview_loader_;
 155                 if (wa_) {
 156                         wa_->closeAll();
 157                         delete wa_;
 158                 }
 159                 delete inset;
 160         }
 161
 162         /// search for macro in local (buffer) table or in children
 163         MacroData const * getBufferMacro(docstring const & name,
 164                 DocIterator const & pos) const;
 165
 166         /// Update macro table starting with position of it \param it in some
 167         /// text inset.
 168         void updateMacros(DocIterator & it, DocIterator & scope);
 169         ///
 170         void setLabel(ParIterator & it, UpdateType utype) const;
 171
 172         /** If we have branches that use the file suffix
 173             feature, return the file name with suffix appended.
 174         */
 175         FileName exportFileName() const;
 176
 177         Buffer * owner_;
 178
 179         BufferParams params;
 180         LyXVC lyxvc;
 181         FileName temppath;
 182         mutable TexRow texrow;
 183
 184         /// need to regenerate .tex?
 185         DepClean dep_clean;
 186
 187         /// is save needed?
 188         mutable bool lyx_clean;
 189
 190         /// is autosave needed?
 191         mutable bool bak_clean;
 192
 193         /// is this an unnamed file (New...)?
 194         bool unnamed;
 195
 196         /// is this an internal bufffer?
 197         bool internal_buffer;
 198
 199         /// buffer is r/o
 200         bool read_only;
 201
 202         /// name of the file the buffer is associated with.
 203         FileName filename;
 204
 205         /** Set to true only when the file is fully loaded.
 206          *  Used to prevent the premature generation of previews
 207          *  and by the citation inset.
 208          */
 209         bool file_fully_loaded;
 210
 211         /// original format of loaded file
 212         int file_format;
 213
 214         /// if the file was originally loaded from an older format, do
 215         /// we need to back it up still?
 216         bool need_format_backup;
 217
 218         /// Ignore the parent (e.g. when exporting a child standalone)?
 219         bool ignore_parent;
 220
 221         ///
 222         mutable TocBackend toc_backend;
 223
 224         /// macro tables
 225         struct ScopeMacro {
 226                 ScopeMacro() {}
 227                 ScopeMacro(DocIterator const & s, MacroData const & m)
 228                         : scope(s), macro(m) {}
 229                 DocIterator scope;
 230                 MacroData macro;
 231         };
 232         typedef map<DocIterator, ScopeMacro> PositionScopeMacroMap;
 233         typedef map<docstring, PositionScopeMacroMap> NamePositionScopeMacroMap;
 234         /// map from the macro name to the position map,
 235         /// which maps the macro definition position to the scope and the MacroData.
 236         NamePositionScopeMacroMap macros;
 237         /// This seem to change the way Buffer::getMacro() works
 238         mutable bool macro_lock;
 239
 240         /// positions of child buffers in the buffer
 241         typedef map<Buffer const * const, DocIterator> BufferPositionMap;
 242         struct ScopeBuffer {
 243                 ScopeBuffer() : buffer(0) {}
 244                 ScopeBuffer(DocIterator const & s, Buffer const * b)
 245                         : scope(s), buffer(b) {}
 246                 DocIterator scope;
 247                 Buffer const * buffer;
 248         };
 249         typedef map<DocIterator, ScopeBuffer> PositionScopeBufferMap;
 250         /// position of children buffers in this buffer
 251         BufferPositionMap children_positions;
 252         /// map from children inclusion positions to their scope and their buffer
 253         PositionScopeBufferMap position_to_children;
 254
 255         /// Contains the old buffer filePath() while saving-as, or the
 256         /// directory where the document was last saved while loading.
 257         string old_position;
 258
 259         /** Keeps track of the path of local layout files.
 260          *  If possible, it is always relative to the buffer path.
 261          *  Empty for layouts in system or user directory.
 262          */
 263         string layout_position;
 264
 265         /// Container for all sort of Buffer dependant errors.
 266         map<string, ErrorList> errorLists;
 267
 268         /// checksum used to test if the file has been externally modified.  Used to
 269         /// double check whether the file had been externally modified when saving.
 270         unsigned long checksum_;
 271
 272         ///
 273         frontend::WorkAreaManager * wa_;
 274         ///
 275         frontend::GuiBufferDelegate * gui_;
 276
 277         ///
 278         Undo undo_;
 279
 280         /// A cache for the bibfiles (including bibfiles of loaded child
 281         /// documents), needed for appropriate update of natbib labels.
 282         mutable FileNamePairList bibfiles_cache_;
 283
 284         // FIXME The caching mechanism could be improved. At present, we have a
 285         // cache for each Buffer, that caches all the bibliography info for that
 286         // Buffer. A more efficient solution would be to have a global cache per
 287         // file, and then to construct the Buffer's bibinfo from that.
 288         /// A cache for bibliography info
 289         mutable BiblioInfo bibinfo_;
 290         /// whether the bibinfo cache is valid
 291         mutable bool bibinfo_cache_valid_;
 292         /// Cache of timestamps of .bib files
 293         map<FileName, time_t> bibfile_status_;
 294         /// Indicates whether the bibinfo has changed since the last time
 295         /// we ran updateBuffer(), i.e., whether citation labels may need
 296         /// to be updated.
 297         mutable bool cite_labels_valid_;
 298
 299         /// These two hold the file name and format, written to by
 300         /// Buffer::preview and read from by LFUN_BUFFER_VIEW_CACHE.
 301         FileName preview_file_;
 302         string preview_format_;
 303         /// If there was an error when previewing, on the next preview we do
 304         /// a fresh compile (e.g. in case the user installed a package that
 305         /// was missing).
 306         bool preview_error_;
 307
 308         mutable RefCache ref_cache_;
 309
 310         /// our Text that should be wrapped in an InsetText
 311         InsetText * inset;
 312
 313         ///
 314         PreviewLoader * preview_loader_;
 315
 316         /// This is here to force the test to be done whenever parent_buffer
 317         /// is accessed.
 318         Buffer const * parent() const
 319         {
 320                 // ignore_parent temporarily "orphans" a buffer
 321                 // (e.g. if a child is compiled standalone)
 322                 if (ignore_parent)
 323                         return 0;
 324                 // if parent_buffer is not loaded, then it has been unloaded,
 325                 // which means that parent_buffer is an invalid pointer. So we
 326                 // set it to null in that case.
 327                 // however, the BufferList doesn't know about cloned buffers, so
 328                 // they will always be regarded as unloaded. in that case, we hope
 329                 // for the best.
 330                 if (!cloned_buffer_ && !theBufferList().isLoaded(parent_buffer))
 331                         parent_buffer = 0;
 332                 return parent_buffer;
 333         }
 334
 335         ///
 336         void setParent(Buffer const * pb)
 337         {
 338                 if (parent_buffer == pb)
 339                         // nothing to do
 340                         return;
 341                 if (!cloned_buffer_ && parent_buffer && pb)
 342                         LYXERR0("Warning: a buffer should not have two parents!");
 343                 parent_buffer = pb;
 344                 if (!cloned_buffer_ && parent_buffer)
 345                         parent_buffer->invalidateBibinfoCache();
 346         }
 347
 348         /// If non zero, this buffer is a clone of existing buffer \p cloned_buffer_
 349         /// This one is useful for preview detached in a thread.
 350         Buffer const * cloned_buffer_;
 351         ///
 352         CloneList * clone_list_;
 353         /// are we in the process of exporting this buffer?
 354         mutable bool doing_export;
 355
 356         /// compute statistics
 357         /// \p from initial position
 358         /// \p to points to the end position
 359         void updateStatistics(DocIterator & from, DocIterator & to,
 360                               bool skipNoOutput = true);
 361         /// statistics accessor functions
 362         int wordCount() const
 363         {
 364                 return word_count_;
 365         }
 366         int charCount(bool with_blanks) const
 367         {
 368                 return char_count_
 369                 + (with_blanks ? blank_count_ : 0);
 370         }
 371
 372         // does the buffer contain tracked changes? (if so, we automatically
 373         // display the review toolbar, for instance)
 374         mutable bool tracked_changes_present_;
 375
 376         // Make sure the file monitor monitors the good file.
 377         void refreshFileMonitor();
 378
 379         /// Notify or clear of external modification
 380         void fileExternallyModified(bool exists);
 381
 382         /// has been externally modified? Can be reset by the user.
 383         mutable bool externally_modified_;
 384
 385 private:
 386         /// So we can force access via the accessors.
 387         mutable Buffer const * parent_buffer;
 388
 389         int word_count_;
 390         int char_count_;
 391         int blank_count_;
 392
 393         FileMonitorPtr file_monitor_;
 394 };
 395
 396
 397 /// Creates the per buffer temporary directory
 398 static FileName createBufferTmpDir()
 399 {
 400         // FIXME This would be the ideal application for a TempDir class (like
 401         //       TempFile but for directories)
 402         string counter;
 403         {
 404                 static int count;
 405                 static Mutex mutex;
 406                 Mutex::Locker locker(&mutex);
 407                 counter = convert<string>(count++);
 408         }
 409         // We are in our own directory.  Why bother to mangle name?
 410         // In fact I wrote this code to circumvent a problematic behaviour
 411         // (bug?) of EMX mkstemp().
 412         FileName tmpfl(package().temp_dir().absFileName() + "/lyx_tmpbuf" +
 413                 counter);
 414
 415         if (!tmpfl.createDirectory(0777)) {
 416                 throw ExceptionMessage(WarningException, _("Disk Error: "), bformat(
 417                         _("LyX could not create the temporary directory '%1$s' (Disk is full maybe?)"),
 418                         from_utf8(tmpfl.absFileName())));
 419         }
 420         return tmpfl;
 421 }
 422
 423
 424 Buffer::Impl::Impl(Buffer * owner, FileName const & file, bool readonly_,
 425         Buffer const * cloned_buffer)
 426         : owner_(owner), lyx_clean(true), bak_clean(true), unnamed(false),
 427           internal_buffer(false), read_only(readonly_), filename(file),
 428           file_fully_loaded(false), file_format(LYX_FORMAT), need_format_backup(false),
 429           ignore_parent(false),  toc_backend(owner), macro_lock(false),
 430           checksum_(0), wa_(0),  gui_(0), undo_(*owner), bibinfo_cache_valid_(false),
 431           cite_labels_valid_(false), preview_error_(false),
 432           inset(0), preview_loader_(0), cloned_buffer_(cloned_buffer),
 433           clone_list_(0), doing_export(false),
 434           tracked_changes_present_(0), externally_modified_(false), parent_buffer(0),
 435           word_count_(0), char_count_(0), blank_count_(0)
 436 {
 437         refreshFileMonitor();
 438         if (!cloned_buffer_) {
 439                 temppath = createBufferTmpDir();
 440                 lyxvc.setBuffer(owner_);
 441                 if (use_gui)
 442                         wa_ = new frontend::WorkAreaManager;
 443                 return;
 444         }
 445         temppath = cloned_buffer_->d->temppath;
 446         file_fully_loaded = true;
 447         params = cloned_buffer_->d->params;
 448         bibfiles_cache_ = cloned_buffer_->d->bibfiles_cache_;
 449         bibinfo_ = cloned_buffer_->d->bibinfo_;
 450         bibinfo_cache_valid_ = cloned_buffer_->d->bibinfo_cache_valid_;
 451         bibfile_status_ = cloned_buffer_->d->bibfile_status_;
 452         cite_labels_valid_ = cloned_buffer_->d->cite_labels_valid_;
 453         unnamed = cloned_buffer_->d->unnamed;
 454         internal_buffer = cloned_buffer_->d->internal_buffer;
 455         layout_position = cloned_buffer_->d->layout_position;
 456         preview_file_ = cloned_buffer_->d->preview_file_;
 457         preview_format_ = cloned_buffer_->d->preview_format_;
 458         preview_error_ = cloned_buffer_->d->preview_error_;
 459         tracked_changes_present_ = cloned_buffer_->d->tracked_changes_present_;
 460 }
 461
 462
 463 Buffer::Buffer(string const & file, bool readonly, Buffer const * cloned_buffer)
 464         : d(new Impl(this, FileName(file), readonly, cloned_buffer))
 465 {
 466         LYXERR(Debug::INFO, "Buffer::Buffer()");
 467         if (cloned_buffer) {
 468                 d->inset = new InsetText(*cloned_buffer->d->inset);
 469                 d->inset->setBuffer(*this);
 470                 // FIXME: optimize this loop somewhat, maybe by creating a new
 471                 // general recursive Inset::setId().
 472                 DocIterator it = doc_iterator_begin(this);
 473                 DocIterator cloned_it = doc_iterator_begin(cloned_buffer);
 474                 for (; !it.atEnd(); it.forwardPar(), cloned_it.forwardPar())
 475                         it.paragraph().setId(cloned_it.paragraph().id());
 476         } else
 477                 d->inset = new InsetText(this);
 478         d->inset->getText(0)->setMacrocontextPosition(par_iterator_begin());
 479 }
 480
 481
 482 Buffer::~Buffer()
 483 {
 484         LYXERR(Debug::INFO, "Buffer::~Buffer()");
 485         // here the buffer should take care that it is
 486         // saved properly, before it goes into the void.
 487
 488         // GuiView already destroyed
 489         d->gui_ = 0;
 490
 491         if (isInternal()) {
 492                 // No need to do additional cleanups for internal buffer.
 493                 delete d;
 494                 return;
 495         }
 496
 497         if (isClone()) {
 498                 // this is in case of recursive includes: we won't try to delete
 499                 // ourselves as a child.
 500                 d->clone_list_->erase(this);
 501                 // loop over children
 502                 for (auto const & p : d->children_positions) {
 503                         Buffer * child = const_cast<Buffer *>(p.first);
 504                                 if (d->clone_list_->erase(child))
 505                                         delete child;
 506                 }
 507                 // if we're the master buffer, then we should get rid of the list
 508                 // of clones
 509                 if (!parent()) {
 510                         // If this is not empty, we have leaked something. Worse, one of the
 511                         // children still has a reference to this list. But we will try to
 512                         // continue, rather than shut down.
 513                         LATTEST(d->clone_list_->empty());
 514                         list<CloneList *>::iterator it =
 515                                 find(cloned_buffers.begin(), cloned_buffers.end(), d->clone_list_);
 516                         if (it == cloned_buffers.end()) {
 517                                 // We will leak in this case, but it is safe to continue.
 518                                 LATTEST(false);
 519                         } else
 520                                 cloned_buffers.erase(it);
 521                         delete d->clone_list_;
 522                 }
 523                 // FIXME Do we really need to do this right before we delete d?
 524                 // clear references to children in macro tables
 525                 d->children_positions.clear();
 526                 d->position_to_children.clear();
 527         } else {
 528                 // loop over children
 529                 for (auto const & p : d->children_positions) {
 530                         Buffer * child = const_cast<Buffer *>(p.first);
 531                         if (theBufferList().isLoaded(child)) {
 532                                 if (theBufferList().isOthersChild(this, child))
 533                                         child->setParent(0);
 534                                 else
 535                                         theBufferList().release(child);
 536                         }
 537                 }
 538
 539                 if (!isClean()) {
 540                         docstring msg = _("LyX attempted to close a document that had unsaved changes!\n");
 541                         try {
 542                                 msg += emergencyWrite();
 543                         } catch (...) {
 544                                 msg += "  " + _("Save failed! Document is lost.");
 545                         }
 546                         Alert::warning(_("Attempting to close changed document!"), msg);
 547                 }
 548
 549                 // FIXME Do we really need to do this right before we delete d?
 550                 // clear references to children in macro tables
 551                 d->children_positions.clear();
 552                 d->position_to_children.clear();
 553
 554                 if (!d->temppath.destroyDirectory()) {
 555                         LYXERR0(bformat(_("Could not remove the temporary directory %1$s"),
 556                                 from_utf8(d->temppath.absFileName())));
 557                 }
 558                 removePreviews();
 559         }
 560
 561         delete d;
 562 }
 563
 564
 565 Buffer * Buffer::cloneFromMaster() const
 566 {
 567         BufferMap bufmap;
 568         cloned_buffers.push_back(new CloneList);
 569         CloneList * clones = cloned_buffers.back();
 570
 571         masterBuffer()->cloneWithChildren(bufmap, clones);
 572
 573         // make sure we got cloned
 574         BufferMap::const_iterator bit = bufmap.find(this);
 575         LASSERT(bit != bufmap.end(), return 0);
 576         Buffer * cloned_buffer = bit->second;
 577
 578         return cloned_buffer;
 579 }
 580
 581
 582 void Buffer::cloneWithChildren(BufferMap & bufmap, CloneList * clones) const
 583 {
 584         // have we already been cloned?
 585         if (bufmap.find(this) != bufmap.end())
 586                 return;
 587
 588         Buffer * buffer_clone = new Buffer(fileName().absFileName(), false, this);
 589
 590         // The clone needs its own DocumentClass, since running updateBuffer() will
 591         // modify it, and we would otherwise be sharing it with the original Buffer.
 592         buffer_clone->params().makeDocumentClass(true);
 593         ErrorList el;
 594         cap::switchBetweenClasses(
 595                         params().documentClassPtr(), buffer_clone->params().documentClassPtr(),
 596                         static_cast<InsetText &>(buffer_clone->inset()), el);
 597
 598         bufmap[this] = buffer_clone;
 599         clones->insert(buffer_clone);
 600         buffer_clone->d->clone_list_ = clones;
 601         buffer_clone->d->macro_lock = true;
 602         buffer_clone->d->children_positions.clear();
 603
 604         // FIXME (Abdel 09/01/2010): this is too complicated. The whole children_positions and
 605         // math macro caches need to be rethought and simplified.
 606         // I am not sure wether we should handle Buffer cloning here or in BufferList.
 607         // Right now BufferList knows nothing about buffer clones.
 608         for (auto const & p : d->position_to_children) {
 609                 DocIterator dit = p.first.clone(buffer_clone);
 610                 dit.setBuffer(buffer_clone);
 611                 Buffer * child = const_cast<Buffer *>(p.second.buffer);
 612
 613                 child->cloneWithChildren(bufmap, clones);
 614                 BufferMap::iterator const bit = bufmap.find(child);
 615                 LASSERT(bit != bufmap.end(), continue);
 616                 Buffer * child_clone = bit->second;
 617
 618                 Inset * inset = dit.nextInset();
 619                 LASSERT(inset && inset->lyxCode() == INCLUDE_CODE, continue);
 620                 InsetInclude * inset_inc = static_cast<InsetInclude *>(inset);
 621                 inset_inc->setChildBuffer(child_clone);
 622                 child_clone->d->setParent(buffer_clone);
 623                 // FIXME Do we need to do this now, or can we wait until we run updateMacros()?
 624                 buffer_clone->setChild(dit, child_clone);
 625         }
 626         buffer_clone->d->macro_lock = false;
 627         return;
 628 }
 629
 630
 631 Buffer * Buffer::cloneBufferOnly() const {
 632         cloned_buffers.push_back(new CloneList);
 633         CloneList * clones = cloned_buffers.back();
 634         Buffer * buffer_clone = new Buffer(fileName().absFileName(), false, this);
 635
 636         // The clone needs its own DocumentClass, since running updateBuffer() will
 637         // modify it, and we would otherwise be sharing it with the original Buffer.
 638         buffer_clone->params().makeDocumentClass(true);
 639         ErrorList el;
 640         cap::switchBetweenClasses(
 641                         params().documentClassPtr(), buffer_clone->params().documentClassPtr(),
 642                         static_cast<InsetText &>(buffer_clone->inset()), el);
 643
 644         clones->insert(buffer_clone);
 645         buffer_clone->d->clone_list_ = clones;
 646
 647         // we won't be cloning the children
 648         buffer_clone->d->children_positions.clear();
 649         return buffer_clone;
 650 }
 651
 652
 653 bool Buffer::isClone() const
 654 {
 655         return d->cloned_buffer_;
 656 }
 657
 658
 659 void Buffer::changed(bool update_metrics) const
 660 {
 661         if (d->wa_)
 662                 d->wa_->redrawAll(update_metrics);
 663 }
 664
 665
 666 frontend::WorkAreaManager & Buffer::workAreaManager() const
 667 {
 668         LBUFERR(d->wa_);
 669         return *d->wa_;
 670 }
 671
 672
 673 Text & Buffer::text() const
 674 {
 675         return d->inset->text();
 676 }
 677
 678
 679 Inset & Buffer::inset() const
 680 {
 681         return *d->inset;
 682 }
 683
 684
 685 BufferParams & Buffer::params()
 686 {
 687         return d->params;
 688 }
 689
 690
 691 BufferParams const & Buffer::params() const
 692 {
 693         return d->params;
 694 }
 695
 696
 697 BufferParams const & Buffer::masterParams() const
 698 {
 699         if (masterBuffer() == this)
 700                 return params();
 701
 702         BufferParams & mparams = const_cast<Buffer *>(masterBuffer())->params();
 703         // Copy child authors to the params. We need those pointers.
 704         for (Author const & a : params().authors())
 705                 mparams.authors().record(a);
 706         return mparams;
 707 }
 708
 709
 710 double Buffer::fontScalingFactor() const
 711 {
 712         return isExporting() ? 75.0 * params().html_math_img_scale
 713                 : 0.01 * lyxrc.dpi * lyxrc.currentZoom * lyxrc.preview_scale_factor * params().display_pixel_ratio;
 714 }
 715
 716
 717 ParagraphList & Buffer::paragraphs()
 718 {
 719         return text().paragraphs();
 720 }
 721
 722
 723 ParagraphList const & Buffer::paragraphs() const
 724 {
 725         return text().paragraphs();
 726 }
 727
 728
 729 LyXVC & Buffer::lyxvc()
 730 {
 731         return d->lyxvc;
 732 }
 733
 734
 735 LyXVC const & Buffer::lyxvc() const
 736 {
 737         return d->lyxvc;
 738 }
 739
 740
 741 string const Buffer::temppath() const
 742 {
 743         return d->temppath.absFileName();
 744 }
 745
 746
 747 TexRow & Buffer::texrow()
 748 {
 749         return d->texrow;
 750 }
 751
 752
 753 TexRow const & Buffer::texrow() const
 754 {
 755         return d->texrow;
 756 }
 757
 758
 759 TocBackend & Buffer::tocBackend() const
 760 {
 761         return d->toc_backend;
 762 }
 763
 764
 765 Undo & Buffer::undo()
 766 {
 767         return d->undo_;
 768 }
 769
 770
 771 void Buffer::setChild(DocIterator const & dit, Buffer * child)
 772 {
 773         d->children_positions[child] = dit;
 774 }
 775
 776
 777 string Buffer::latexName(bool const no_path) const
 778 {
 779         FileName latex_name =
 780                 makeLatexName(d->exportFileName());
 781         return no_path ? latex_name.onlyFileName()
 782                 : latex_name.absFileName();
 783 }
 784
 785
 786 FileName Buffer::Impl::exportFileName() const
 787 {
 788         docstring const branch_suffix =
 789                 params.branchlist().getFileNameSuffix();
 790         if (branch_suffix.empty())
 791                 return filename;
 792
 793         string const name = filename.onlyFileNameWithoutExt()
 794                 + to_utf8(branch_suffix);
 795         FileName res(filename.onlyPath().absFileName() + "/" + name);
 796         res.changeExtension(filename.extension());
 797
 798         return res;
 799 }
 800
 801
 802 string Buffer::logName(LogType * type) const
 803 {
 804         string const filename = latexName(false);
 805
 806         if (filename.empty()) {
 807                 if (type)
 808                         *type = latexlog;
 809                 return string();
 810         }
 811
 812         string const path = temppath();
 813
 814         FileName const fname(addName(temppath(),
 815                                      onlyFileName(changeExtension(filename,
 816                                                                   ".log"))));
 817
 818         // FIXME: how do we know this is the name of the build log?
 819         FileName const bname(
 820                 addName(path, onlyFileName(
 821                         changeExtension(filename,
 822                                         theFormats().extension(params().bufferFormat()) + ".out"))));
 823
 824         // Also consider the master buffer log file
 825         FileName masterfname = fname;
 826         LogType mtype = latexlog;
 827         if (masterBuffer() != this) {
 828                 string const mlogfile = masterBuffer()->logName(&mtype);
 829                 masterfname = FileName(mlogfile);
 830         }
 831
 832         // If no Latex log or Build log is newer, show Build log
 833         if (bname.exists() &&
 834             ((!fname.exists() && !masterfname.exists())
 835              || (fname.lastModified() < bname.lastModified()
 836                  && masterfname.lastModified() < bname.lastModified()))) {
 837                 LYXERR(Debug::FILES, "Log name calculated as: " << bname);
 838                 if (type)
 839                         *type = buildlog;
 840                 return bname.absFileName();
 841         // If we have a newer master file log or only a master log, show this
 842         } else if (fname != masterfname
 843                    && (!fname.exists() && (masterfname.exists()
 844                    || fname.lastModified() < masterfname.lastModified()))) {
 845                 LYXERR(Debug::FILES, "Log name calculated as: " << masterfname);
 846                 if (type)
 847                         *type = mtype;
 848                 return masterfname.absFileName();
 849         }
 850         LYXERR(Debug::FILES, "Log name calculated as: " << fname);
 851         if (type)
 852                         *type = latexlog;
 853         return fname.absFileName();
 854 }
 855
 856
 857 void Buffer::setReadonly(bool const flag)
 858 {
 859         if (d->read_only != flag) {
 860                 d->read_only = flag;
 861                 changed(false);
 862         }
 863 }
 864
 865
 866 void Buffer::setFileName(FileName const & fname)
 867 {
 868         bool const changed = fname != d->filename;
 869         d->filename = fname;
 870         d->refreshFileMonitor();
 871         if (changed)
 872                 lyxvc().file_found_hook(fname);
 873         setReadonly(d->filename.isReadOnly());
 874         saveCheckSum();
 875         updateTitles();
 876 }
 877
 878
 879 int Buffer::readHeader(Lexer & lex)
 880 {
 881         int unknown_tokens = 0;
 882         int line = -1;
 883         int begin_header_line = -1;
 884
 885         // Initialize parameters that may be/go lacking in header:
 886         params().branchlist().clear();
 887         params().preamble.erase();
 888         params().options.erase();
 889         params().master.erase();
 890         params().float_placement.erase();
 891         params().float_alignment.erase();
 892         params().paperwidth.erase();
 893         params().paperheight.erase();
 894         params().leftmargin.erase();
 895         params().rightmargin.erase();
 896         params().topmargin.erase();
 897         params().bottommargin.erase();
 898         params().headheight.erase();
 899         params().headsep.erase();
 900         params().footskip.erase();
 901         params().columnsep.erase();
 902         params().fonts_cjk.erase();
 903         params().listings_params.clear();
 904         params().clearLayoutModules();
 905         params().clearRemovedModules();
 906         params().clearIncludedChildren();
 907         params().pdfoptions().clear();
 908         params().indiceslist().clear();
 909         params().backgroundcolor = lyx::rgbFromHexName("#ffffff");
 910         params().isbackgroundcolor = false;
 911         params().fontcolor = RGBColor(0, 0, 0);
 912         params().isfontcolor = false;
 913         params().notefontcolor = RGBColor(0xCC, 0xCC, 0xCC);
 914         params().boxbgcolor = RGBColor(0xFF, 0, 0);
 915         params().html_latex_start.clear();
 916         params().html_latex_end.clear();
 917         params().html_math_img_scale = 1.0;
 918         params().output_sync_macro.erase();
 919         params().setLocalLayout(docstring(), false);
 920         params().setLocalLayout(docstring(), true);
 921         params().biblio_opts.erase();
 922         params().biblatex_bibstyle.erase();
 923         params().biblatex_citestyle.erase();
 924         params().multibib.erase();
 925
 926         for (int i = 0; i < 4; ++i) {
 927                 params().user_defined_bullet(i) = ITEMIZE_DEFAULTS[i];
 928                 params().temp_bullet(i) = ITEMIZE_DEFAULTS[i];
 929         }
 930
 931         ErrorList & errorList = d->errorLists["Parse"];
 932
 933         while (lex.isOK()) {
 934                 string token;
 935                 lex >> token;
 936
 937                 if (token.empty())
 938                         continue;
 939
 940                 if (token == "\\end_header")
 941                         break;
 942
 943                 ++line;
 944                 if (token == "\\begin_header") {
 945                         begin_header_line = line;
 946                         continue;
 947                 }
 948
 949                 LYXERR(Debug::PARSER, "Handling document header token: `"
 950                                       << token << '\'');
 951
 952                 string const result =
 953                         params().readToken(lex, token, d->filename.onlyPath());
 954                 if (!result.empty()) {
 955                         if (token == "\\textclass") {
 956                                 d->layout_position = result;
 957                         } else {
 958                                 ++unknown_tokens;
 959                                 docstring const s = bformat(_("Unknown token: "
 960                                                                         "%1$s %2$s\n"),
 961                                                          from_utf8(token),
 962                                                          lex.getDocString());
 963                                 errorList.push_back(ErrorItem(_("Document header error"), s));
 964                         }
 965                 }
 966         }
 967         if (begin_header_line) {
 968                 docstring const s = _("\\begin_header is missing");
 969                 errorList.push_back(ErrorItem(_("Document header error"), s));
 970         }
 971
 972         params().shell_escape = theSession().shellescapeFiles().find(absFileName());
 973
 974         params().makeDocumentClass();
 975
 976         return unknown_tokens;
 977 }
 978
 979
 980 // Uwe C. Schroeder
 981 // changed to be public and have one parameter
 982 // Returns true if "\end_document" is not read (Asger)
 983 bool Buffer::readDocument(Lexer & lex)
 984 {
 985         ErrorList & errorList = d->errorLists["Parse"];
 986         errorList.clear();
 987
 988         // remove dummy empty par
 989         paragraphs().clear();
 990
 991         if (!lex.checkFor("\\begin_document")) {
 992                 docstring const s = _("\\begin_document is missing");
 993                 errorList.push_back(ErrorItem(_("Document header error"), s));
 994         }
 995
 996         readHeader(lex);
 997
 998         if (params().output_changes) {
 999                 bool dvipost    = LaTeXFeatures::isAvailable("dvipost");
1000                 bool xcolorulem = LaTeXFeatures::isAvailable("ulem") &&
1001                                   LaTeXFeatures::isAvailable("xcolor");
1002
1003                 if (!dvipost && !xcolorulem) {
1004                         Alert::warning(_("Changes not shown in LaTeX output"),
1005                                        _("Changes will not be highlighted in LaTeX output, "
1006                                          "because neither dvipost nor xcolor/ulem are installed.\n"
1007                                          "Please install these packages or redefine "
1008                                          "\\lyxadded and \\lyxdeleted in the LaTeX preamble."));
1009                 } else if (!xcolorulem) {
1010                         Alert::warning(_("Changes not shown in LaTeX output"),
1011                                        _("Changes will not be highlighted in LaTeX output "
1012                                          "when using pdflatex, because xcolor and ulem are not installed.\n"
1013                                          "Please install both packages or redefine "
1014                                          "\\lyxadded and \\lyxdeleted in the LaTeX preamble."));
1015                 }
1016         }
1017
1018         if (!parent() && !params().master.empty()) {
1019                 FileName const master_file = makeAbsPath(params().master,
1020                            onlyPath(absFileName()));
1021                 if (isLyXFileName(master_file.absFileName())) {
1022                         Buffer * master =
1023                                 checkAndLoadLyXFile(master_file, true);
1024                         if (master) {
1025                                 // necessary e.g. after a reload
1026                                 // to re-register the child (bug 5873)
1027                                 // FIXME: clean up updateMacros (here, only
1028                                 // child registering is needed).
1029                                 master->updateMacros();
1030                                 // set master as master buffer, but only
1031                                 // if we are a real child
1032                                 if (master->isChild(this))
1033                                         setParent(master);
1034                                 // if the master is not fully loaded
1035                                 // it is probably just loading this
1036                                 // child. No warning needed then.
1037                                 else if (master->isFullyLoaded())
1038                                         LYXERR0("The master '"
1039                                                 << params().master
1040                                                 << "' assigned to this document ("
1041                                                 << absFileName()
1042                                                 << ") does not include "
1043                                                 "this document. Ignoring the master assignment.");
1044                         }
1045                 }
1046         }
1047
1048         // assure we have a default index
1049         params().indiceslist().addDefault(B_("Index"));
1050
1051         // read main text
1052         if (FileName::isAbsolute(params().origin))
1053                 d->old_position = params().origin;
1054         else
1055                 d->old_position = filePath();
1056         bool const res = text().read(lex, errorList, d->inset);
1057         d->old_position.clear();
1058
1059         // inform parent buffer about local macros
1060         if (parent()) {
1061                 Buffer const * pbuf = parent();
1062                 for (auto const & m : usermacros)
1063                         pbuf->usermacros.insert(m);
1064         }
1065         usermacros.clear();
1066         updateMacros();
1067         updateMacroInstances(InternalUpdate);
1068         return res;
1069 }
1070
1071
1072 bool Buffer::importString(string const & format, docstring const & contents, ErrorList & errorList)
1073 {
1074         Format const * fmt = theFormats().getFormat(format);
1075         if (!fmt)
1076                 return false;
1077         // It is important to use the correct extension here, since some
1078         // converters create a wrong output file otherwise (e.g. html2latex)
1079         FileName const name = tempFileName("Buffer_importStringXXXXXX." + fmt->extension());
1080         ofdocstream os(name.toFilesystemEncoding().c_str());
1081         // Do not convert os implicitly to bool, since that is forbidden in C++11.
1082         bool const success = !(os << contents).fail();
1083         os.close();
1084
1085         bool converted = false;
1086         if (success) {
1087                 params().compressed = false;
1088
1089                 // remove dummy empty par
1090                 paragraphs().clear();
1091
1092                 converted = importFile(format, name, errorList);
1093         }
1094
1095         removeTempFile(name);
1096         return converted;
1097 }
1098
1099
1100 bool Buffer::importFile(string const & format, FileName const & name, ErrorList & errorList)
1101 {
1102         if (!theConverters().isReachable(format, "lyx"))
1103                 return false;
1104
1105         FileName const lyx = tempFileName("Buffer_importFileXXXXXX.lyx");
1106         Converters::RetVal const retval =
1107             theConverters().convert(0, name, lyx, name, format, "lyx", errorList);
1108         if (retval == Converters::SUCCESS) {
1109                 bool const success = readFile(lyx) == ReadSuccess;
1110                 removeTempFile(lyx);
1111                 return success;
1112         }
1113
1114         return false;
1115 }
1116
1117
1118 bool Buffer::readString(string const & s)
1119 {
1120         params().compressed = false;
1121
1122         Lexer lex;
1123         istringstream is(s);
1124         lex.setStream(is);
1125         TempFile tempfile("Buffer_readStringXXXXXX.lyx");
1126         FileName const fn = tempfile.name();
1127
1128         int file_format;
1129         bool success = parseLyXFormat(lex, fn, file_format) == ReadSuccess;
1130
1131         if (success && file_format != LYX_FORMAT) {
1132                 // We need to call lyx2lyx, so write the input to a file
1133                 ofstream os(fn.toFilesystemEncoding().c_str());
1134                 os << s;
1135                 os.close();
1136                 // lyxvc in readFile
1137                 if (readFile(fn) != ReadSuccess)
1138                         success = false;
1139         }
1140         else if (success)
1141                 if (readDocument(lex))
1142                         success = false;
1143         return success;
1144 }
1145
1146
1147 Buffer::ReadStatus Buffer::readFile(FileName const & fn)
1148 {
1149         FileName fname(fn);
1150         Lexer lex;
1151         if (!lex.setFile(fname)) {
1152                 Alert::error(_("File Not Found"),
1153                         bformat(_("Unable to open file `%1$s'."),
1154                                 from_utf8(fn.absFileName())));
1155                 return ReadFileNotFound;
1156         }
1157
1158         int file_format;
1159         ReadStatus const ret_plf = parseLyXFormat(lex, fn, file_format);
1160         if (ret_plf != ReadSuccess)
1161                 return ret_plf;
1162
1163         if (file_format != LYX_FORMAT) {
1164                 FileName tmpFile;
1165                 ReadStatus ret_clf = convertLyXFormat(fn, tmpFile, file_format);
1166                 if (ret_clf != ReadSuccess)
1167                         return ret_clf;
1168                 ret_clf = readFile(tmpFile);
1169                 if (ret_clf == ReadSuccess) {
1170                         d->file_format = file_format;
1171                         d->need_format_backup = true;
1172                 }
1173                 return ret_clf;
1174         }
1175
1176         // FIXME: InsetInfo needs to know whether the file is under VCS
1177         // during the parse process, so this has to be done before.
1178         lyxvc().file_found_hook(d->filename);
1179
1180         if (readDocument(lex)) {
1181                 Alert::error(_("Document format failure"),
1182                         bformat(_("%1$s ended unexpectedly, which means"
1183                                 " that it is probably corrupted."),
1184                                         from_utf8(fn.absFileName())));
1185                 return ReadDocumentFailure;
1186         }
1187
1188         d->file_fully_loaded = true;
1189         d->read_only = !d->filename.isWritable();
1190         params().compressed = theFormats().isZippedFile(d->filename);
1191         saveCheckSum();
1192         return ReadSuccess;
1193 }
1194
1195
1196 bool Buffer::isFullyLoaded() const
1197 {
1198         return d->file_fully_loaded;
1199 }
1200
1201
1202 void Buffer::setFullyLoaded(bool value)
1203 {
1204         d->file_fully_loaded = value;
1205 }
1206
1207
1208 bool Buffer::lastPreviewError() const
1209 {
1210         return d->preview_error_;
1211 }
1212
1213
1214 PreviewLoader * Buffer::loader() const
1215 {
1216         if (!isExporting() && lyxrc.preview == LyXRC::PREVIEW_OFF)
1217                 return 0;
1218         if (!d->preview_loader_)
1219                 d->preview_loader_ = new PreviewLoader(*this);
1220         return d->preview_loader_;
1221 }
1222
1223
1224 void Buffer::removePreviews() const
1225 {
1226         delete d->preview_loader_;
1227         d->preview_loader_ = 0;
1228 }
1229
1230
1231 void Buffer::updatePreviews() const
1232 {
1233         PreviewLoader * ploader = loader();
1234         if (!ploader)
1235                 return;
1236
1237         InsetIterator it = inset_iterator_begin(*d->inset);
1238         InsetIterator const end = inset_iterator_end(*d->inset);
1239         for (; it != end; ++it)
1240                 it->addPreview(it, *ploader);
1241
1242         ploader->startLoading();
1243 }
1244
1245
1246 Buffer::ReadStatus Buffer::parseLyXFormat(Lexer & lex,
1247         FileName const & fn, int & file_format) const
1248 {
1249         if(!lex.checkFor("\\lyxformat")) {
1250                 Alert::error(_("Document format failure"),
1251                         bformat(_("%1$s is not a readable LyX document."),
1252                                 from_utf8(fn.absFileName())));
1253                 return ReadNoLyXFormat;
1254         }
1255
1256         string tmp_format;
1257         lex >> tmp_format;
1258
1259         // LyX formats 217 and earlier were written as 2.17. This corresponds
1260         // to files from LyX versions < 1.1.6.3. We just remove the dot in
1261         // these cases. See also: www.lyx.org/trac/changeset/1313.
1262         size_t dot = tmp_format.find_first_of(".,");
1263         if (dot != string::npos)
1264                 tmp_format.erase(dot, 1);
1265
1266         file_format = convert<int>(tmp_format);
1267         return ReadSuccess;
1268 }
1269
1270
1271 Buffer::ReadStatus Buffer::convertLyXFormat(FileName const & fn,
1272         FileName & tmpfile, int from_format)
1273 {
1274         TempFile tempfile("Buffer_convertLyXFormatXXXXXX.lyx");
1275         tempfile.setAutoRemove(false);
1276         tmpfile = tempfile.name();
1277         if(tmpfile.empty()) {
1278                 Alert::error(_("Conversion failed"),
1279                         bformat(_("%1$s is from a different"
1280                                 " version of LyX, but a temporary"
1281                                 " file for converting it could"
1282                                 " not be created."),
1283                                 from_utf8(fn.absFileName())));
1284                 return LyX2LyXNoTempFile;
1285         }
1286
1287         FileName const lyx2lyx = libFileSearch("lyx2lyx", "lyx2lyx");
1288         if (lyx2lyx.empty()) {
1289                 Alert::error(_("Conversion script not found"),
1290                      bformat(_("%1$s is from a different"
1291                                " version of LyX, but the"
1292                                " conversion script lyx2lyx"
1293                                " could not be found."),
1294                                from_utf8(fn.absFileName())));
1295                 return LyX2LyXNotFound;
1296         }
1297
1298         // Run lyx2lyx:
1299         //   $python$ "$lyx2lyx$" -t $LYX_FORMAT$ -o "$tempfile$" "$filetoread$"
1300         ostringstream command;
1301         command << os::python()
1302                 << ' ' << quoteName(lyx2lyx.toFilesystemEncoding())
1303                 << " -t " << convert<string>(LYX_FORMAT)
1304                 << " -o " << quoteName(tmpfile.toSafeFilesystemEncoding())
1305                 << ' ' << quoteName(fn.toSafeFilesystemEncoding());
1306         string const command_str = command.str();
1307
1308         LYXERR(Debug::INFO, "Running '" << command_str << '\'');
1309
1310         cmd_ret const ret = runCommand(command_str);
1311         if (ret.first != 0) {
1312                 if (from_format < LYX_FORMAT) {
1313                         Alert::error(_("Conversion script failed"),
1314                                 bformat(_("%1$s is from an older version"
1315                                         " of LyX and the lyx2lyx script"
1316                                         " failed to convert it."),
1317                                         from_utf8(fn.absFileName())));
1318                         return LyX2LyXOlderFormat;
1319                 } else {
1320                         Alert::error(_("Conversion script failed"),
1321                                 bformat(_("%1$s is from a newer version"
1322                                         " of LyX and the lyx2lyx script"
1323                                         " failed to convert it."),
1324                                         from_utf8(fn.absFileName())));
1325                         return LyX2LyXNewerFormat;
1326                 }
1327         }
1328         return ReadSuccess;
1329 }
1330
1331
1332 FileName Buffer::getBackupName() const {
1333         map<int, string> const file_formats = {
1334           {544, "23"},
1335           {508, "22"},
1336           {474, "21"},
1337           {413, "20"},
1338           {345, "16"},
1339           {276, "15"},
1340           {245, "14"},
1341           {221, "13"},
1342           {220, "12"},
1343           {218, "1163"},
1344           {217, "116"},
1345           {216, "115"},
1346           {215, "11"},
1347           {210, "010"},
1348           {200, "006"}
1349         };
1350         FileName const & fn = fileName();
1351         string const fname = fn.onlyFileNameWithoutExt();
1352         string const fext  = fn.extension() + "~";
1353         string const fpath = lyxrc.backupdir_path.empty() ?
1354                 fn.onlyPath().absFileName() :
1355                 lyxrc.backupdir_path;
1356         string backup_suffix;
1357         // If file format is from a stable series use version instead of file format
1358         auto const it = file_formats.find(d->file_format);
1359         if (it != file_formats.end())
1360                 backup_suffix = "-lyx" + it->second;
1361         else
1362                 backup_suffix = "-lyxformat-" + convert<string>(d->file_format);
1363         string const backname = fname + backup_suffix;
1364         FileName backup(addName(fpath, addExtension(backname, fext)));
1365
1366         // limit recursion, just in case
1367         int v = 1;
1368         unsigned long orig_checksum = 0;
1369         while (backup.exists() && v < 100) {
1370                 if (orig_checksum == 0)
1371                         orig_checksum = fn.checksum();
1372                 unsigned long new_checksum = backup.checksum();
1373                 if (orig_checksum == new_checksum) {
1374                         LYXERR(Debug::FILES, "Not backing up " << fn <<
1375                                "since " << backup << "has the same checksum.");
1376                         // a bit of a hack, but we have to check this anyway
1377                         // below, and setting this is simpler than introducing
1378                         // a special boolean for this purpose.
1379                         v = 1000;
1380                         break;
1381                 }
1382                 string const newbackname = backname + "-" + convert<string>(v);
1383                 backup.set(addName(fpath, addExtension(newbackname, fext)));
1384                 v++;
1385         }
1386         return v < 100 ? backup : FileName();
1387 }
1388
1389
1390 // Should probably be moved to somewhere else: BufferView? GuiView?
1391 bool Buffer::save() const
1392 {
1393         docstring const file = makeDisplayPath(absFileName(), 20);
1394         d->filename.refresh();
1395
1396         // check the read-only status before moving the file as a backup
1397         if (d->filename.exists()) {
1398                 bool const read_only = !d->filename.isWritable();
1399                 if (read_only) {
1400                         Alert::warning(_("File is read-only"),
1401                                 bformat(_("The file %1$s cannot be written because it "
1402                                 "is marked as read-only."), file));
1403                         return false;
1404                 }
1405         }
1406
1407         // ask if the disk file has been externally modified (use checksum method)
1408         if (fileName().exists() && isChecksumModified()) {
1409                 docstring text =
1410                         bformat(_("Document %1$s has been externally modified. "
1411                                 "Are you sure you want to overwrite this file?"), file);
1412                 int const ret = Alert::prompt(_("Overwrite modified file?"),
1413                         text, 1, 1, _("&Overwrite"), _("&Cancel"));
1414                 if (ret == 1)
1415                         return false;
1416         }
1417
1418         // We don't need autosaves in the immediate future. (Asger)
1419         resetAutosaveTimers();
1420
1421         // if the file does not yet exist, none of the backup activity
1422         // that follows is necessary
1423         if (!fileName().exists()) {
1424                 if (!writeFile(fileName()))
1425                         return false;
1426                 markClean();
1427                 return true;
1428         }
1429
1430         // we first write the file to a new name, then move it to its
1431         // proper location once that has been done successfully. that
1432         // way we preserve the original file if something goes wrong.
1433         string const justname = fileName().onlyFileNameWithoutExt();
1434         auto tempfile = make_unique<TempFile>(fileName().onlyPath(),
1435                                               justname + "-XXXXXX.lyx");
1436         bool const symlink = fileName().isSymLink();
1437         if (!symlink)
1438                 tempfile->setAutoRemove(false);
1439
1440         FileName savefile(tempfile->name());
1441         LYXERR(Debug::FILES, "Saving to " << savefile.absFileName());
1442         if (!writeFile(savefile))
1443                 return false;
1444
1445         // we will set this to false if we fail
1446         bool made_backup = true;
1447
1448         FileName backupName;
1449         bool const needBackup = lyxrc.make_backup || d->need_format_backup;
1450         if (needBackup) {
1451                 if (d->need_format_backup)
1452                         backupName = getBackupName();
1453
1454                 // If we for some reason failed to find a backup name in case of
1455                 // a format change, this will still set one. It's the best we can
1456                 // do in this case.
1457                 if (backupName.empty()) {
1458                         backupName.set(fileName().absFileName() + "~");
1459                         if (!lyxrc.backupdir_path.empty()) {
1460                                 string const mangledName =
1461                                         subst(subst(backupName.absFileName(), '/', '!'), ':', '!');
1462                                 backupName.set(addName(lyxrc.backupdir_path, mangledName));
1463                         }
1464                 }
1465
1466                 LYXERR(Debug::FILES, "Backing up original file to " <<
1467                                 backupName.absFileName());
1468                 // Except file is symlink do not copy because of #6587.
1469                 // Hard links have bad luck.
1470                 made_backup = symlink ?
1471                         fileName().copyTo(backupName):
1472                         fileName().moveTo(backupName);
1473
1474                 if (!made_backup) {
1475                         Alert::error(_("Backup failure"),
1476                                      bformat(_("Cannot create backup file %1$s.\n"
1477                                                "Please check whether the directory exists and is writable."),
1478                                              from_utf8(backupName.absFileName())));
1479                         //LYXERR(Debug::DEBUG, "Fs error: " << fe.what());
1480                 } else if (d->need_format_backup) {
1481                         // the original file has been backed up successfully, so we
1482                         // will not need to do that again
1483                         d->need_format_backup = false;
1484                 }
1485         }
1486
1487         // Destroy tempfile since it keeps the file locked on windows (bug 9234)
1488         // Only do this if tempfile is not in autoremove mode
1489         if (!symlink)
1490                 tempfile.reset();
1491         // If we have no symlink, we can simply rename the temp file.
1492         // Otherwise, we need to copy it so the symlink stays intact.
1493         if (made_backup && symlink ? savefile.copyTo(fileName(), true) :
1494                                            savefile.moveTo(fileName()))
1495         {
1496                 // saveCheckSum() was already called by writeFile(), but the
1497                 // time stamp is invalidated by copying/moving
1498                 saveCheckSum();
1499                 markClean();
1500                 if (d->file_format != LYX_FORMAT)
1501                         // the file associated with this buffer is now in the current format
1502                         d->file_format = LYX_FORMAT;
1503                 return true;
1504         }
1505         // else we saved the file, but failed to move it to the right location.
1506
1507         if (needBackup && made_backup && !symlink) {
1508                 // the original file was moved to some new location, so it will look
1509                 // to the user as if it was deleted. (see bug #9234.) we could try
1510                 // to restore it, but that would basically mean trying to do again
1511                 // what we just failed to do. better to leave things as they are.
1512                 Alert::error(_("Write failure"),
1513                              bformat(_("The file has successfully been saved as:\n  %1$s.\n"
1514                                        "But LyX could not move it to:\n  %2$s.\n"
1515                                        "Your original file has been backed up to:\n  %3$s"),
1516                                      from_utf8(savefile.absFileName()),
1517                                      from_utf8(fileName().absFileName()),
1518                                      from_utf8(backupName.absFileName())));
1519         } else {
1520                 // either we did not try to make a backup, or else we tried and failed,
1521                 // or else the original file was a symlink, in which case it was copied,
1522                 // not moved. so the original file is intact.
1523                 Alert::error(_("Write failure"),
1524                              bformat(_("Cannot move saved file to:\n  %1$s.\n"
1525                                        "But the file has successfully been saved as:\n  %2$s."),
1526                                      from_utf8(fileName().absFileName()),
1527                          from_utf8(savefile.absFileName())));
1528         }
1529         return false;
1530 }
1531
1532
1533 bool Buffer::writeFile(FileName const & fname) const
1534 {
1535         if (d->read_only && fname == d->filename)
1536                 return false;
1537
1538         bool retval = false;
1539
1540         docstring const str = bformat(_("Saving document %1$s..."),
1541                 makeDisplayPath(fname.absFileName()));
1542         message(str);
1543
1544         string const encoded_fname = fname.toSafeFilesystemEncoding(os::CREATE);
1545
1546         if (params().compressed) {
1547                 gz::ogzstream ofs(encoded_fname.c_str(), ios::out|ios::trunc);
1548                 retval = ofs && write(ofs);
1549         } else {
1550                 ofstream ofs(encoded_fname.c_str(), ios::out|ios::trunc);
1551                 retval = ofs && write(ofs);
1552         }
1553
1554         if (!retval) {
1555                 message(str + _(" could not write file!"));
1556                 return false;
1557         }
1558
1559         // see bug 6587
1560         // removeAutosaveFile();
1561
1562         saveCheckSum();
1563         message(str + _(" done."));
1564
1565         return true;
1566 }
1567
1568
1569 docstring Buffer::emergencyWrite()
1570 {
1571         // No need to save if the buffer has not changed.
1572         if (isClean())
1573                 return docstring();
1574
1575         string const doc = isUnnamed() ? onlyFileName(absFileName()) : absFileName();
1576
1577         docstring user_message = bformat(
1578                 _("LyX: Attempting to save document %1$s\n"), from_utf8(doc));
1579
1580         // We try to save three places:
1581         // 1) Same place as document. Unless it is an unnamed doc.
1582         if (!isUnnamed()) {
1583                 string s = absFileName();
1584                 s += ".emergency";
1585                 LYXERR0("  " << s);
1586                 if (writeFile(FileName(s))) {
1587                         markClean();
1588                         user_message += "  " + bformat(_("Saved to %1$s. Phew.\n"), from_utf8(s));
1589                         return user_message;
1590                 } else {
1591                         user_message += "  " + _("Save failed! Trying again...\n");
1592                 }
1593         }
1594
1595         // 2) In HOME directory.
1596         string s = addName(Package::get_home_dir().absFileName(), absFileName());
1597         s += ".emergency";
1598         lyxerr << ' ' << s << endl;
1599         if (writeFile(FileName(s))) {
1600                 markClean();
1601                 user_message += "  " + bformat(_("Saved to %1$s. Phew.\n"), from_utf8(s));
1602                 return user_message;
1603         }
1604
1605         user_message += "  " + _("Save failed! Trying yet again...\n");
1606
1607         // 3) In "/tmp" directory.
1608         // MakeAbsPath to prepend the current
1609         // drive letter on OS/2
1610         s = addName(package().temp_dir().absFileName(), absFileName());
1611         s += ".emergency";
1612         lyxerr << ' ' << s << endl;
1613         if (writeFile(FileName(s))) {
1614                 markClean();
1615                 user_message += "  " + bformat(_("Saved to %1$s. Phew.\n"), from_utf8(s));
1616                 return user_message;
1617         }
1618
1619         user_message += "  " + _("Save failed! Document is lost.");
1620         // Don't try again.
1621         markClean();
1622         return user_message;
1623 }
1624
1625
1626 bool Buffer::write(ostream & ofs) const
1627 {
1628 #ifdef HAVE_LOCALE
1629         // Use the standard "C" locale for file output.
1630         ofs.imbue(locale::classic());
1631 #endif
1632
1633         // The top of the file should not be written by params().
1634
1635         // write out a comment in the top of the file
1636         // Important: Keep the version formatting in sync with lyx2lyx and
1637         //            tex2lyx (bug 7951)
1638         ofs << "#LyX " << lyx_version_major << "." << lyx_version_minor
1639             << " created this file. For more info see https://www.lyx.org/\n"
1640             << "\\lyxformat " << LYX_FORMAT << "\n"
1641             << "\\begin_document\n";
1642
1643         /// For each author, set 'used' to true if there is a change
1644         /// by this author in the document; otherwise set it to 'false'.
1645         for (Author const & a : params().authors())
1646                 a.setUsed(false);
1647
1648         ParIterator const end = const_cast<Buffer *>(this)->par_iterator_end();
1649         ParIterator it = const_cast<Buffer *>(this)->par_iterator_begin();
1650         for ( ; it != end; ++it)
1651                 it->checkAuthors(params().authors());
1652
1653         // now write out the buffer parameters.
1654         ofs << "\\begin_header\n";
1655         params().writeFile(ofs, this);
1656         ofs << "\\end_header\n";
1657
1658         // write the text
1659         ofs << "\n\\begin_body\n";
1660         text().write(ofs);
1661         ofs << "\n\\end_body\n";
1662
1663         // Write marker that shows file is complete
1664         ofs << "\\end_document" << endl;
1665
1666         // Shouldn't really be needed....
1667         //ofs.close();
1668
1669         // how to check if close went ok?
1670         // Following is an attempt... (BE 20001011)
1671
1672         // good() returns false if any error occurred, including some
1673         //        formatting error.
1674         // bad()  returns true if something bad happened in the buffer,
1675         //        which should include file system full errors.
1676
1677         bool status = true;
1678         if (!ofs) {
1679                 status = false;
1680                 lyxerr << "File was not closed properly." << endl;
1681         }
1682
1683         return status;
1684 }
1685
1686
1687 Buffer::ExportStatus Buffer::makeLaTeXFile(FileName const & fname,
1688                            string const & original_path,
1689                            OutputParams const & runparams_in,
1690                            OutputWhat output) const
1691 {
1692         OutputParams runparams = runparams_in;
1693
1694         // XeTeX with TeX fonts is only safe with ASCII encoding (see also #9740),
1695         // Check here, because the "flavor" is not known in BufferParams::encoding()
1696         // (power users can override this safety measure selecting "utf8-plain").
1697         if (!params().useNonTeXFonts && (runparams.flavor == OutputParams::XETEX)
1698             && (runparams.encoding->name() != "utf8-plain"))
1699                 runparams.encoding = encodings.fromLyXName("ascii");
1700
1701         string const encoding = runparams.encoding->iconvName();
1702         LYXERR(Debug::LATEX, "makeLaTeXFile encoding: " << encoding << ", fname=" << fname.realPath());
1703
1704         ofdocstream ofs;
1705         try { ofs.reset(encoding); }
1706         catch (iconv_codecvt_facet_exception const & e) {
1707                 lyxerr << "Caught iconv exception: " << e.what() << endl;
1708                 Alert::error(_("Iconv software exception Detected"), bformat(_("Please "
1709                         "verify that the support software for your encoding (%1$s) is "
1710                         "properly installed"), from_ascii(encoding)));
1711                 return ExportError;
1712         }
1713         if (!openFileWrite(ofs, fname))
1714                 return ExportError;
1715
1716         ErrorList & errorList = d->errorLists["Export"];
1717         errorList.clear();
1718         ExportStatus status = ExportSuccess;
1719         otexstream os(ofs);
1720
1721         // make sure we are ready to export
1722         // this needs to be done before we validate
1723         // FIXME Do we need to do this all the time? I.e., in children
1724         // of a master we are exporting?
1725         updateBuffer();
1726         updateMacroInstances(OutputUpdate);
1727
1728         ExportStatus retval;
1729         try {
1730                 retval = writeLaTeXSource(os, original_path, runparams, output);
1731                 if (retval == ExportKilled)
1732                         return ExportKilled;
1733         }
1734         catch (EncodingException const & e) {
1735                 docstring const failed(1, e.failed_char);
1736                 ostringstream oss;
1737                 oss << "0x" << hex << e.failed_char << dec;
1738                 if (getParFromID(e.par_id).paragraph().layout().pass_thru) {
1739                         docstring msg = bformat(_("Uncodable character '%1$s'"
1740                                                   " (code point %2$s)"),
1741                                                   failed, from_utf8(oss.str()));
1742                         errorList.push_back(ErrorItem(msg, _("Some characters of your document are not "
1743                                         "representable in specific verbatim contexts.\n"
1744                                         "Changing the document encoding to utf8 could help."),
1745                                                       {e.par_id, e.pos}, {e.par_id, e.pos + 1}));
1746                 } else {
1747                         docstring msg = bformat(_("Could not find LaTeX command for character '%1$s'"
1748                                                   " (code point %2$s)"),
1749                                                   failed, from_utf8(oss.str()));
1750                         errorList.push_back(ErrorItem(msg, _("Some characters of your document are probably not "
1751                                         "representable in the chosen encoding.\n"
1752                                         "Changing the document encoding to utf8 could help."),
1753                                                       {e.par_id, e.pos}, {e.par_id, e.pos + 1}));
1754                 }
1755                 status = ExportError;
1756         }
1757         catch (iconv_codecvt_facet_exception const & e) {
1758                 errorList.push_back(ErrorItem(_("iconv conversion failed"),
1759                                               _(e.what())));
1760                 status = ExportError;
1761         }
1762         catch (exception const & e) {
1763                 errorList.push_back(ErrorItem(_("conversion failed"),
1764                                               _(e.what())));
1765                 lyxerr << e.what() << endl;
1766                 status = ExportError;
1767         }
1768         catch (...) {
1769                 lyxerr << "Caught some really weird exception..." << endl;
1770                 lyx_exit(1);
1771         }
1772
1773         d->texrow = move(os.texrow());
1774
1775         ofs.close();
1776         if (ofs.fail()) {
1777                 status = ExportError;
1778                 lyxerr << "File '" << fname << "' was not closed properly." << endl;
1779         }
1780
1781         if (runparams_in.silent)
1782                 errorList.clear();
1783         else
1784                 errors("Export");
1785         return status;
1786 }
1787
1788
1789 Buffer::ExportStatus Buffer::writeLaTeXSource(otexstream & os,
1790                            string const & original_path,
1791                            OutputParams const & runparams_in,
1792                            OutputWhat output) const
1793 {
1794         // The child documents, if any, shall be already loaded at this point.
1795
1796         OutputParams runparams = runparams_in;
1797
1798         // XeTeX with TeX fonts is only safe with ASCII encoding,
1799         // Check here, because the "flavor" is not known in BufferParams::encoding()
1800         // (power users can override this safety measure selecting "utf8-plain").
1801         if (!params().useNonTeXFonts && (runparams.flavor == OutputParams::XETEX)
1802             && (runparams.encoding->name() != "utf8-plain"))
1803                 runparams.encoding = encodings.fromLyXName("ascii");
1804         // FIXME: when only the current paragraph is shown, this is ignored
1805         //        (or not reached) and characters encodable in the current
1806         //        encoding are not converted to ASCII-representation.
1807
1808         // Some macros rely on font encoding
1809         runparams.main_fontenc = params().main_font_encoding();
1810
1811         // If we are compiling a file standalone, even if this is the
1812         // child of some other buffer, let's cut the link here, so the
1813         // file is really independent and no concurring settings from
1814         // the master (e.g. branch state) interfere (see #8100).
1815         if (!runparams.is_child)
1816                 d->ignore_parent = true;
1817
1818         // Classify the unicode characters appearing in math insets
1819         BufferEncodings::initUnicodeMath(*this);
1820
1821         // validate the buffer.
1822         LYXERR(Debug::LATEX, "  Validating buffer...");
1823         LaTeXFeatures features(*this, params(), runparams);
1824         validate(features);
1825         // This is only set once per document (in master)
1826         if (!runparams.is_child)
1827                 runparams.use_polyglossia = features.usePolyglossia();
1828         LYXERR(Debug::LATEX, "  Buffer validation done.");
1829
1830         bool const output_preamble =
1831                 output == FullSource || output == OnlyPreamble;
1832         bool const output_body =
1833                 output == FullSource || output == OnlyBody;
1834
1835         // The starting paragraph of the coming rows is the
1836         // first paragraph of the document. (Asger)
1837         if (output_preamble && runparams.nice) {
1838                 os << "%% LyX " << lyx_version << " created this file.  "
1839                         "For more info, see https://www.lyx.org/.\n"
1840                         "%% Do not edit unless you really know what "
1841                         "you are doing.\n";
1842         }
1843         LYXERR(Debug::INFO, "lyx document header finished");
1844
1845         // There are a few differences between nice LaTeX and usual files:
1846         // usual files have \batchmode and special input@path to allow
1847         // inclusion of figures specified by an explicitly relative path
1848         // (i.e., a path starting with './' or '../') with either \input or
1849         // \includegraphics, as the TEXINPUTS method doesn't work in this case.
1850         // input@path is set when the actual parameter original_path is set.
1851         // This is done for usual tex-file, but not for nice-latex-file.
1852         // (Matthias 250696)
1853         // Note that input@path is only needed for something the user does
1854         // in the preamble, included .tex files or ERT, files included by
1855         // LyX work without it.
1856         if (output_preamble) {
1857                 if (!runparams.nice) {
1858                         // code for usual, NOT nice-latex-file
1859                         os << "\\batchmode\n"; // changed from \nonstopmode
1860                 }
1861                 if (!original_path.empty()) {
1862                         // FIXME UNICODE
1863                         // We don't know the encoding of inputpath
1864                         docstring const inputpath = from_utf8(original_path);
1865                         docstring uncodable_glyphs;
1866                         Encoding const * const enc = runparams.encoding;
1867                         if (enc) {
1868                                 for (size_t n = 0; n < inputpath.size(); ++n) {
1869                                         if (!enc->encodable(inputpath[n])) {
1870                                                 docstring const glyph(1, inputpath[n]);
1871                                                 LYXERR0("Uncodable character '"
1872                                                         << glyph
1873                                                         << "' in input path!");
1874                                                 uncodable_glyphs += glyph;
1875                                         }
1876                                 }
1877                         }
1878
1879                         // warn user if we found uncodable glyphs.
1880                         if (!uncodable_glyphs.empty()) {
1881                                 frontend::Alert::warning(
1882                                         _("Uncodable character in file path"),
1883                                         bformat(
1884                                           _("The path of your document\n"
1885                                             "(%1$s)\n"
1886                                             "contains glyphs that are unknown "
1887                                             "in the current document encoding "
1888                                             "(namely %2$s). This may result in "
1889                                             "incomplete output, unless "
1890                                             "TEXINPUTS contains the document "
1891                                             "directory and you don't use "
1892                                             "explicitly relative paths (i.e., "
1893                                             "paths starting with './' or "
1894                                             "'../') in the preamble or in ERT."
1895                                             "\n\nIn case of problems, choose "
1896                                             "an appropriate document encoding\n"
1897                                             "(such as utf8) or change the "
1898                                             "file path name."),
1899                                           inputpath, uncodable_glyphs));
1900                         } else {
1901                                 string docdir =
1902                                         latex_path(original_path);
1903                                 if (contains(docdir, '#')) {
1904                                         docdir = subst(docdir, "#", "\\#");
1905                                         os << "\\catcode`\\#=11"
1906                                               "\\def\\#{#}\\catcode`\\#=6\n";
1907                                 }
1908                                 if (contains(docdir, '%')) {
1909                                         docdir = subst(docdir, "%", "\\%");
1910                                         os << "\\catcode`\\%=11"
1911                                               "\\def\\%{%}\\catcode`\\%=14\n";
1912                                 }
1913                                 os << "\\makeatletter\n"
1914                                    << "\\def\\input@path{{"
1915                                    << docdir << "}}\n"
1916                                    << "\\makeatother\n";
1917                         }
1918                 }
1919
1920                 // get parent macros (if this buffer has a parent) which will be
1921                 // written at the document begin further down.
1922                 MacroSet parentMacros;
1923                 listParentMacros(parentMacros, features);
1924
1925                 // Write the preamble
1926                 runparams.use_babel = params().writeLaTeX(os, features,
1927                                                           d->filename.onlyPath());
1928
1929                 // Biblatex bibliographies are loaded here
1930                 if (params().useBiblatex()) {
1931                         vector<docstring> const bibfiles =
1932                                 prepareBibFilePaths(runparams, getBibfiles(), true);
1933                         for (docstring const & file: bibfiles)
1934                                 os << "\\addbibresource{" << file << "}\n";
1935                 }
1936
1937                 if (!runparams.dryrun && features.hasPolyglossiaExclusiveLanguages()
1938                     && !features.hasOnlyPolyglossiaLanguages()) {
1939                         docstring blangs;
1940                         docstring plangs;
1941                         vector<string> bll = features.getBabelExclusiveLanguages();
1942                         vector<string> pll = features.getPolyglossiaExclusiveLanguages();
1943                         if (!bll.empty()) {
1944                                 docstring langs;
1945                                 for (string const & sit : bll) {
1946                                         if (!langs.empty())
1947                                                 langs += ", ";
1948                                         langs += _(sit);
1949                                 }
1950                                 blangs = bll.size() > 1 ?
1951                                             bformat(_("The languages %1$s are only supported by Babel."), langs)
1952                                           : bformat(_("The language %1$s is only supported by Babel."), langs);
1953                         }
1954                         if (!pll.empty()) {
1955                                 docstring langs;
1956                                 for (string const & pit : pll) {
1957                                         if (!langs.empty())
1958                                                 langs += ", ";
1959                                         langs += _(pit);
1960                                 }
1961                                 plangs = pll.size() > 1 ?
1962                                             bformat(_("The languages %1$s are only supported by Polyglossia."), langs)
1963                                           : bformat(_("The language %1$s is only supported by Polyglossia."), langs);
1964                                 if (!blangs.empty())
1965                                         plangs += "\n";
1966                         }
1967
1968                         frontend::Alert::warning(
1969                                 _("Incompatible Languages!"),
1970                                 bformat(
1971                                   _("You cannot use the following languages "
1972                                     "together in one LaTeX document because "
1973                                     "they require conflicting language packages:\n"
1974                                     "%1$s%2$s"),
1975                                   plangs, blangs));
1976                 }
1977
1978                 // Japanese might be required only in some children of a document,
1979                 // but once required, we must keep use_japanese true.
1980                 runparams.use_japanese |= features.isRequired("japanese");
1981
1982                 if (!output_body) {
1983                         // Restore the parenthood if needed
1984                         if (!runparams.is_child)
1985                                 d->ignore_parent = false;
1986                         return ExportSuccess;
1987                 }
1988
1989                 // make the body.
1990                 // mark the beginning of the body to separate it from InPreamble insets
1991                 os.texrow().start(TexRow::beginDocument());
1992                 os << "\\begin{document}\n";
1993
1994                 // mark the start of a new paragraph by simulating a newline,
1995                 // so that os.afterParbreak() returns true at document start
1996                 os.lastChar('\n');
1997
1998                 // output the parent macros
1999                 for (auto const & mac : parentMacros) {
2000                         int num_lines = mac->write(os.os(), true);
2001                         os.texrow().newlines(num_lines);
2002                 }
2003
2004         } // output_preamble
2005
2006         LYXERR(Debug::INFO, "preamble finished, now the body.");
2007
2008         // the real stuff
2009         try {
2010                 latexParagraphs(*this, text(), os, runparams);
2011         }
2012         catch (ConversionException const &) { return ExportKilled; }
2013
2014         // Restore the parenthood if needed
2015         if (!runparams.is_child)
2016                 d->ignore_parent = false;
2017
2018         // add this just in case after all the paragraphs
2019         os << endl;
2020
2021         if (output_preamble) {
2022                 os << "\\end{document}\n";
2023                 LYXERR(Debug::LATEX, "makeLaTeXFile...done");
2024         } else {
2025                 LYXERR(Debug::LATEX, "LaTeXFile for inclusion made.");
2026         }
2027         runparams_in.encoding = runparams.encoding;
2028
2029         LYXERR(Debug::INFO, "Finished making LaTeX file.");
2030         LYXERR(Debug::INFO, "Row count was " << os.texrow().rows() - 1 << '.');
2031         return ExportSuccess;
2032 }
2033
2034
2035 Buffer::ExportStatus Buffer::makeDocBookFile(FileName const & fname,
2036                               OutputParams const & runparams,
2037                               OutputWhat output) const
2038 {
2039         LYXERR(Debug::LATEX, "makeDocBookFile...");
2040
2041         ofdocstream ofs;
2042         if (!openFileWrite(ofs, fname))
2043                 return ExportError;
2044
2045         // make sure we are ready to export
2046         // this needs to be done before we validate
2047         updateBuffer();
2048         updateMacroInstances(OutputUpdate);
2049
2050         ExportStatus const retval =
2051                 writeDocBookSource(ofs, fname.absFileName(), runparams, output);
2052         if (retval == ExportKilled)
2053                 return ExportKilled;
2054
2055         ofs.close();
2056         if (ofs.fail())
2057                 lyxerr << "File '" << fname << "' was not closed properly." << endl;
2058         return ExportSuccess;
2059 }
2060
2061
2062 Buffer::ExportStatus Buffer::writeDocBookSource(odocstream & os, string const & fname,
2063                              OutputParams const & runparams,
2064                              OutputWhat output) const
2065 {
2066         LaTeXFeatures features(*this, params(), runparams);
2067         validate(features);
2068
2069         d->texrow.reset();
2070
2071         DocumentClass const & tclass = params().documentClass();
2072         string const & top_element = tclass.latexname();
2073
2074         bool const output_preamble =
2075                 output == FullSource || output == OnlyPreamble;
2076         bool const output_body =
2077           output == FullSource || output == OnlyBody;
2078
2079         if (output_preamble) {
2080                 if (runparams.flavor == OutputParams::XML)
2081                         os << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
2082
2083                 // FIXME UNICODE
2084                 os << "<!DOCTYPE " << from_ascii(top_element) << ' ';
2085
2086                 // FIXME UNICODE
2087                 if (! tclass.class_header().empty())
2088                         os << from_ascii(tclass.class_header());
2089                 else if (runparams.flavor == OutputParams::XML)
2090                         os << "PUBLIC \"-//OASIS//DTD DocBook XML V4.2//EN\" "
2091                             << "\"https://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd\"";
2092                 else
2093                         os << " PUBLIC \"-//OASIS//DTD DocBook V4.2//EN\"";
2094
2095                 docstring preamble = params().preamble;
2096                 if (runparams.flavor != OutputParams::XML ) {
2097                         preamble += "<!ENTITY % output.print.png \"IGNORE\">\n";
2098                         preamble += "<!ENTITY % output.print.pdf \"IGNORE\">\n";
2099                         preamble += "<!ENTITY % output.print.eps \"IGNORE\">\n";
2100                         preamble += "<!ENTITY % output.print.bmp \"IGNORE\">\n";
2101                 }
2102
2103                 string const name = runparams.nice
2104                         ? changeExtension(absFileName(), ".sgml") : fname;
2105                 preamble += features.getIncludedFiles(name);
2106                 preamble += features.getLyXSGMLEntities();
2107
2108                 if (!preamble.empty()) {
2109                         os << "\n [ " << preamble << " ]";
2110                 }
2111                 os << ">\n\n";
2112         }
2113
2114         if (output_body) {
2115                 string top = top_element;
2116                 top += " lang=\"";
2117                 if (runparams.flavor == OutputParams::XML)
2118                         top += params().language->code();
2119                 else
2120                         top += params().language->code().substr(0, 2);
2121                 top += '"';
2122
2123                 if (!params().options.empty()) {
2124                         top += ' ';
2125                         top += params().options;
2126                 }
2127
2128                 os << "<!-- " << ((runparams.flavor == OutputParams::XML)? "XML" : "SGML")
2129                                 << " file was created by LyX " << lyx_version
2130                                 << "\n  See https://www.lyx.org/ for more information -->\n";
2131
2132                 params().documentClass().counters().reset();
2133
2134                 sgml::openTag(os, top);
2135                 os << '\n';
2136                 try {
2137                         docbookParagraphs(text(), *this, os, runparams);
2138                 }
2139                 catch (ConversionException const &) { return ExportKilled; }
2140                 sgml::closeTag(os, top_element);
2141         }
2142         return ExportSuccess;
2143 }
2144
2145
2146 Buffer::ExportStatus Buffer::makeLyXHTMLFile(FileName const & fname,
2147                               OutputParams const & runparams) const
2148 {
2149         LYXERR(Debug::LATEX, "makeLyXHTMLFile...");
2150
2151         ofdocstream ofs;
2152         if (!openFileWrite(ofs, fname))
2153                 return ExportError;
2154
2155         // make sure we are ready to export
2156         // this has to be done before we validate
2157         updateBuffer(UpdateMaster, OutputUpdate);
2158         updateMacroInstances(OutputUpdate);
2159
2160         ExportStatus const retval = writeLyXHTMLSource(ofs, runparams, FullSource);
2161         if (retval == ExportKilled)
2162                 return retval;
2163
2164         ofs.close();
2165         if (ofs.fail())
2166                 lyxerr << "File '" << fname << "' was not closed properly." << endl;
2167         return retval;
2168 }
2169
2170
2171 Buffer::ExportStatus Buffer::writeLyXHTMLSource(odocstream & os,
2172                              OutputParams const & runparams,
2173                              OutputWhat output) const
2174 {
2175         LaTeXFeatures features(*this, params(), runparams);
2176         validate(features);
2177         d->bibinfo_.makeCitationLabels(*this);
2178
2179         bool const output_preamble =
2180                 output == FullSource || output == OnlyPreamble;
2181         bool const output_body =
2182           output == FullSource || output == OnlyBody || output == IncludedFile;
2183
2184         if (output_preamble) {
2185                 os << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
2186                    << "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.1 plus MathML 2.0//EN\" \"http://www.w3.org/Math/DTD/mathml2/xhtml-math11-f.dtd\">\n"
2187                    // FIXME Language should be set properly.
2188                    << "<html xmlns=\"http://www.w3.org/1999/xhtml\">\n"
2189                    << "<head>\n"
2190                    << "<meta name=\"GENERATOR\" content=\"" << PACKAGE_STRING << "\" />\n"
2191                    // FIXME Presumably need to set this right
2192                    << "<meta http-equiv=\"Content-type\" content=\"text/html;charset=UTF-8\" />\n";
2193
2194                 docstring const & doctitle = features.htmlTitle();
2195                 os << "<title>"
2196                    << (doctitle.empty() ?
2197                          from_ascii("LyX Document") :
2198                          html::htmlize(doctitle, XHTMLStream::ESCAPE_ALL))
2199                    << "</title>\n";
2200
2201                 docstring styles = features.getTClassHTMLPreamble();
2202                 if (!styles.empty())
2203                         os << "\n<!-- Text Class Preamble -->\n" << styles << '\n';
2204
2205                 styles = features.getPreambleSnippets().str;
2206                 if (!styles.empty())
2207                         os << "\n<!-- Preamble Snippets -->\n" << styles << '\n';
2208
2209                 // we will collect CSS information in a stream, and then output it
2210                 // either here, as part of the header, or else in a separate file.
2211                 odocstringstream css;
2212                 styles = features.getCSSSnippets();
2213                 if (!styles.empty())
2214                         css << "/* LyX Provided Styles */\n" << styles << '\n';
2215
2216                 styles = features.getTClassHTMLStyles();
2217                 if (!styles.empty())
2218                         css << "/* Layout-provided Styles */\n" << styles << '\n';
2219
2220                 bool const needfg = params().fontcolor != RGBColor(0, 0, 0);
2221                 bool const needbg = params().backgroundcolor != RGBColor(0xFF, 0xFF, 0xFF);
2222                 if (needfg || needbg) {
2223                                 css << "\nbody {\n";
2224                                 if (needfg)
2225                                    css << "  color: "
2226                                             << from_ascii(X11hexname(params().fontcolor))
2227                                             << ";\n";
2228                                 if (needbg)
2229                                    css << "  background-color: "
2230                                             << from_ascii(X11hexname(params().backgroundcolor))
2231                                             << ";\n";
2232                                 css << "}\n";
2233                 }
2234
2235                 docstring const dstyles = css.str();
2236                 if (!dstyles.empty()) {
2237                         bool written = false;
2238                         if (params().html_css_as_file) {
2239                                 // open a file for CSS info
2240                                 ofdocstream ocss;
2241                                 string const fcssname = addName(temppath(), "docstyle.css");
2242                                 FileName const fcssfile = FileName(fcssname);
2243                                 if (openFileWrite(ocss, fcssfile)) {
2244                                         ocss << dstyles;
2245                                         ocss.close();
2246                                         written = true;
2247                                         // write link to header
2248                                         os << "<link rel='stylesheet' href='docstyle.css' type='text/css' />\n";
2249                                         // register file
2250                                         runparams.exportdata->addExternalFile("xhtml", fcssfile);
2251                                 }
2252                         }
2253                         // we are here if the CSS is supposed to be written to the header
2254                         // or if we failed to write it to an external file.
2255                         if (!written) {
2256                                 os << "<style type='text/css'>\n"
2257                                          << dstyles
2258                                          << "\n</style>\n";
2259                         }
2260                 }
2261                 os << "</head>\n";
2262         }
2263
2264         if (output_body) {
2265                 bool const output_body_tag = (output != IncludedFile);
2266                 if (output_body_tag)
2267                         os << "<body dir=\"auto\">\n";
2268                 XHTMLStream xs(os);
2269                 if (output != IncludedFile)
2270                         // if we're an included file, the counters are in the master.
2271                         params().documentClass().counters().reset();
2272                 try {
2273                         xhtmlParagraphs(text(), *this, xs, runparams);
2274                 }
2275                 catch (ConversionException const &) { return ExportKilled; }
2276                 if (output_body_tag)
2277                         os << "</body>\n";
2278         }
2279
2280         if (output_preamble)
2281                 os << "</html>\n";
2282
2283         return ExportSuccess;
2284 }
2285
2286
2287 // chktex should be run with these flags disabled: 3, 22, 25, 30, 38(?)
2288 // Other flags: -wall -v0 -x
2289 int Buffer::runChktex()
2290 {
2291         setBusy(true);
2292
2293         // get LaTeX-Filename
2294         FileName const path(temppath());
2295         string const name = addName(path.absFileName(), latexName());
2296         string const org_path = filePath();
2297
2298         PathChanger p(path); // path to LaTeX file
2299         message(_("Running chktex..."));
2300
2301         // Generate the LaTeX file if neccessary
2302         OutputParams runparams(&params().encoding());
2303         runparams.flavor = OutputParams::LATEX;
2304         runparams.nice = false;
2305         runparams.linelen = lyxrc.plaintext_linelen;
2306         ExportStatus const retval =
2307                 makeLaTeXFile(FileName(name), org_path, runparams);
2308         if (retval != ExportSuccess) {
2309                 // error code on failure
2310                 return -1;
2311         }
2312
2313         TeXErrors terr;
2314         Chktex chktex(lyxrc.chktex_command, onlyFileName(name), filePath());
2315         int const res = chktex.run(terr); // run chktex
2316
2317         if (res == -1) {
2318                 Alert::error(_("chktex failure"),
2319                              _("Could not run chktex successfully."));
2320         } else {
2321                 ErrorList & errlist = d->errorLists["ChkTeX"];
2322                 errlist.clear();
2323                 bufferErrors(terr, errlist);
2324         }
2325
2326         setBusy(false);
2327
2328         if (runparams.silent)
2329                 d->errorLists["ChkTeX"].clear();
2330         else
2331                 errors("ChkTeX");
2332
2333         return res;
2334 }
2335
2336
2337 void Buffer::validate(LaTeXFeatures & features) const
2338 {
2339         // Validate the buffer params, but not for included
2340         // files, since they also use the parent buffer's
2341         // params (# 5941)
2342         if (!features.runparams().is_child)
2343                 params().validate(features);
2344
2345         for (Paragraph const & p : paragraphs())
2346                 p.validate(features);
2347
2348         if (lyxerr.debugging(Debug::LATEX)) {
2349                 features.showStruct();
2350         }
2351 }
2352
2353
2354 void Buffer::getLabelList(vector<docstring> & list) const
2355 {
2356         // If this is a child document, use the master's list instead.
2357         if (parent()) {
2358                 masterBuffer()->getLabelList(list);
2359                 return;
2360         }
2361
2362         list.clear();
2363         shared_ptr<Toc> toc = d->toc_backend.toc("label");
2364         for (auto const & tocit : *toc) {
2365                 if (tocit.depth() == 0)
2366                         list.push_back(tocit.str());
2367         }
2368 }
2369
2370
2371 void Buffer::invalidateBibinfoCache() const
2372 {
2373         d->bibinfo_cache_valid_ = false;
2374         d->cite_labels_valid_ = false;
2375         removeBiblioTempFiles();
2376         // also invalidate the cache for the parent buffer
2377         Buffer const * const pbuf = d->parent();
2378         if (pbuf)
2379                 pbuf->invalidateBibinfoCache();
2380 }
2381
2382
2383 FileNamePairList const & Buffer::getBibfiles(UpdateScope scope) const
2384 {
2385         // FIXME This is probably unnecessary, given where we call this.
2386         // If this is a child document, use the master instead.
2387         Buffer const * const pbuf = masterBuffer();
2388         if (pbuf != this && scope != UpdateChildOnly)
2389                 return pbuf->getBibfiles();
2390         return d->bibfiles_cache_;
2391 }
2392
2393
2394 BiblioInfo const & Buffer::masterBibInfo() const
2395 {
2396         Buffer const * const tmp = masterBuffer();
2397         if (tmp != this)
2398                 return tmp->masterBibInfo();
2399         return d->bibinfo_;
2400 }
2401
2402
2403 BiblioInfo const & Buffer::bibInfo() const
2404 {
2405         return d->bibinfo_;
2406 }
2407
2408
2409 void Buffer::registerBibfiles(FileNamePairList const & bf) const {
2410         // We register the bib files in the master buffer,
2411         // if there is one, but also in every single buffer,
2412         // in case a child is compiled alone.
2413         Buffer const * const tmp = masterBuffer();
2414         if (tmp != this)
2415                 tmp->registerBibfiles(bf);
2416
2417         for (auto const & p : bf) {
2418                 FileNamePairList::const_iterator temp =
2419                         find(d->bibfiles_cache_.begin(), d->bibfiles_cache_.end(), p);
2420                 if (temp == d->bibfiles_cache_.end())
2421                         d->bibfiles_cache_.push_back(p);
2422         }
2423 }
2424
2425
2426 void Buffer::checkIfBibInfoCacheIsValid() const
2427 {
2428         // use the master's cache
2429         Buffer const * const tmp = masterBuffer();
2430         if (tmp != this) {
2431                 tmp->checkIfBibInfoCacheIsValid();
2432                 return;
2433         }
2434
2435         // if we already know the cache is invalid, no need to check
2436         // the timestamps
2437         if (!d->bibinfo_cache_valid_)
2438                 return;
2439
2440         // compare the cached timestamps with the actual ones.
2441         FileNamePairList const & bibfiles_cache = getBibfiles();
2442         FileNamePairList::const_iterator ei = bibfiles_cache.begin();
2443         FileNamePairList::const_iterator en = bibfiles_cache.end();
2444         for (; ei != en; ++ ei) {
2445                 FileName const fn = ei->second;
2446                 time_t lastw = fn.lastModified();
2447                 time_t prevw = d->bibfile_status_[fn];
2448                 if (lastw != prevw) {
2449                         d->bibinfo_cache_valid_ = false;
2450                         d->cite_labels_valid_ = false;
2451                         d->bibfile_status_[fn] = lastw;
2452                 }
2453         }
2454 }
2455
2456
2457 void Buffer::reloadBibInfoCache() const
2458 {
2459         // use the master's cache
2460         Buffer const * const tmp = masterBuffer();
2461         if (tmp != this) {
2462                 tmp->reloadBibInfoCache();
2463                 return;
2464         }
2465
2466         checkIfBibInfoCacheIsValid();
2467         if (d->bibinfo_cache_valid_)
2468                 return;
2469
2470         d->bibinfo_.clear();
2471         FileNameList checkedFiles;
2472         collectBibKeys(checkedFiles);
2473         d->bibinfo_cache_valid_ = true;
2474 }
2475
2476
2477 void Buffer::collectBibKeys(FileNameList & checkedFiles) const
2478 {
2479         for (InsetIterator it = inset_iterator_begin(inset()); it; ++it)
2480                 it->collectBibKeys(it, checkedFiles);
2481 }
2482
2483
2484 void Buffer::addBiblioInfo(BiblioInfo const & bin) const
2485 {
2486         // We add the biblio info to the master buffer,
2487         // if there is one, but also to every single buffer,
2488         // in case a child is compiled alone.
2489         BiblioInfo & bi = d->bibinfo_;
2490         bi.mergeBiblioInfo(bin);
2491
2492         if (parent() != 0) {
2493                 BiblioInfo & masterbi = parent()->d->bibinfo_;
2494                 masterbi.mergeBiblioInfo(bin);
2495         }
2496 }
2497
2498
2499 void Buffer::addBibTeXInfo(docstring const & key, BibTeXInfo const & bin) const
2500 {
2501         // We add the bibtex info to the master buffer,
2502         // if there is one, but also to every single buffer,
2503         // in case a child is compiled alone.
2504         BiblioInfo & bi = d->bibinfo_;
2505         bi[key] = bin;
2506
2507         if (parent() != 0) {
2508                 BiblioInfo & masterbi = parent()->d->bibinfo_;
2509                 masterbi[key] = bin;
2510         }
2511 }
2512
2513
2514 void Buffer::makeCitationLabels() const
2515 {
2516         Buffer const * const master = masterBuffer();
2517         return d->bibinfo_.makeCitationLabels(*master);
2518 }
2519
2520
2521 void Buffer::invalidateCiteLabels() const
2522 {
2523         masterBuffer()->d->cite_labels_valid_ = false;
2524 }
2525
2526 bool Buffer::citeLabelsValid() const
2527 {
2528         return masterBuffer()->d->cite_labels_valid_;
2529 }
2530
2531
2532 void Buffer::removeBiblioTempFiles() const
2533 {
2534         // We remove files that contain LaTeX commands specific to the
2535         // particular bibliographic style being used, in order to avoid
2536         // LaTeX errors when we switch style.
2537         FileName const aux_file(addName(temppath(), changeExtension(latexName(),".aux")));
2538         FileName const bbl_file(addName(temppath(), changeExtension(latexName(),".bbl")));
2539         LYXERR(Debug::FILES, "Removing the .aux file " << aux_file);
2540         aux_file.removeFile();
2541         LYXERR(Debug::FILES, "Removing the .bbl file " << bbl_file);
2542         bbl_file.removeFile();
2543         // Also for the parent buffer
2544         Buffer const * const pbuf = parent();
2545         if (pbuf)
2546                 pbuf->removeBiblioTempFiles();
2547 }
2548
2549
2550 bool Buffer::isDepClean(string const & name) const
2551 {
2552         DepClean::const_iterator const it = d->dep_clean.find(name);
2553         if (it == d->dep_clean.end())
2554                 return true;
2555         return it->second;
2556 }
2557
2558
2559 void Buffer::markDepClean(string const & name)
2560 {
2561         d->dep_clean[name] = true;
2562 }
2563
2564
2565 bool Buffer::getStatus(FuncRequest const & cmd, FuncStatus & flag)
2566 {
2567         if (isInternal()) {
2568                 // FIXME? if there is an Buffer LFUN that can be dispatched even
2569                 // if internal, put a switch '(cmd.action)' here.
2570                 return false;
2571         }
2572
2573         bool enable = true;
2574
2575         switch (cmd.action()) {
2576
2577         case LFUN_BUFFER_TOGGLE_READ_ONLY:
2578                 flag.setOnOff(hasReadonlyFlag());
2579                 break;
2580
2581                 // FIXME: There is need for a command-line import.
2582                 //case LFUN_BUFFER_IMPORT:
2583
2584         case LFUN_BUFFER_AUTO_SAVE:
2585                 break;
2586
2587         case LFUN_BUFFER_EXPORT_CUSTOM:
2588                 // FIXME: Nothing to check here?
2589                 break;
2590
2591         case LFUN_BUFFER_EXPORT: {
2592                 docstring const arg = cmd.argument();
2593                 if (arg == "custom") {
2594                         enable = true;
2595                         break;
2596                 }
2597                 string format = (arg.empty() || arg == "default") ?
2598                         params().getDefaultOutputFormat() : to_utf8(arg);
2599                 size_t pos = format.find(' ');
2600                 if (pos != string::npos)
2601                         format = format.substr(0, pos);
2602                 enable = params().isExportable(format, false);
2603                 if (!enable)
2604                         flag.message(bformat(
2605                                              _("Don't know how to export to format: %1$s"), arg));
2606                 break;
2607         }
2608
2609         case LFUN_BUILD_PROGRAM:
2610                 enable = params().isExportable("program", false);
2611                 break;
2612
2613         case LFUN_BRANCH_ACTIVATE:
2614         case LFUN_BRANCH_DEACTIVATE:
2615         case LFUN_BRANCH_MASTER_ACTIVATE:
2616         case LFUN_BRANCH_MASTER_DEACTIVATE: {
2617                 bool const master = (cmd.action() == LFUN_BRANCH_MASTER_ACTIVATE
2618                                      || cmd.action() == LFUN_BRANCH_MASTER_DEACTIVATE);
2619                 BranchList const & branchList = master ? masterBuffer()->params().branchlist()
2620                         : params().branchlist();
2621                 docstring const branchName = cmd.argument();
2622                 flag.setEnabled(!branchName.empty() && branchList.find(branchName));
2623                 break;
2624         }
2625
2626         case LFUN_BRANCH_ADD:
2627         case LFUN_BRANCHES_RENAME:
2628                 // if no Buffer is present, then of course we won't be called!
2629                 break;
2630
2631         case LFUN_BUFFER_LANGUAGE:
2632                 enable = !isReadonly();
2633                 break;
2634
2635         case LFUN_BUFFER_VIEW_CACHE:
2636                 (d->preview_file_).refresh();
2637                 enable = (d->preview_file_).exists() && !(d->preview_file_).isFileEmpty();
2638                 break;
2639
2640         case LFUN_CHANGES_TRACK:
2641                 flag.setEnabled(true);
2642                 flag.setOnOff(params().track_changes);
2643                 break;
2644
2645         case LFUN_CHANGES_OUTPUT:
2646                 flag.setEnabled(true);
2647                 flag.setOnOff(params().output_changes);
2648                 break;
2649
2650         case LFUN_BUFFER_TOGGLE_COMPRESSION:
2651                 flag.setOnOff(params().compressed);
2652                 break;
2653
2654         case LFUN_BUFFER_TOGGLE_OUTPUT_SYNC:
2655                 flag.setOnOff(params().output_sync);
2656                 break;
2657
2658         case LFUN_BUFFER_ANONYMIZE:
2659                 break;
2660
2661         default:
2662                 return false;
2663         }
2664         flag.setEnabled(enable);
2665         return true;
2666 }
2667
2668
2669 void Buffer::dispatch(string const & command, DispatchResult & result)
2670 {
2671         return dispatch(lyxaction.lookupFunc(command), result);
2672 }
2673
2674
2675 // NOTE We can end up here even if we have no GUI, because we are called
2676 // by LyX::exec to handled command-line requests. So we may need to check
2677 // whether we have a GUI or not. The boolean use_gui holds this information.
2678 void Buffer::dispatch(FuncRequest const & func, DispatchResult & dr)
2679 {
2680         if (isInternal()) {
2681                 // FIXME? if there is an Buffer LFUN that can be dispatched even
2682                 // if internal, put a switch '(cmd.action())' here.
2683                 dr.dispatched(false);
2684                 return;
2685         }
2686         string const argument = to_utf8(func.argument());
2687         // We'll set this back to false if need be.
2688         bool dispatched = true;
2689         // This handles undo groups automagically
2690         UndoGroupHelper ugh(this);
2691
2692         switch (func.action()) {
2693         case LFUN_BUFFER_TOGGLE_READ_ONLY:
2694                 if (lyxvc().inUse()) {
2695                         string log = lyxvc().toggleReadOnly();
2696                         if (!log.empty())
2697                                 dr.setMessage(log);
2698                 }
2699                 else
2700                         setReadonly(!hasReadonlyFlag());
2701                 break;
2702
2703         case LFUN_BUFFER_EXPORT: {
2704                 string const format = (argument.empty() || argument == "default") ?
2705                         params().getDefaultOutputFormat() : argument;
2706                 ExportStatus const status = doExport(format, false);
2707                 dr.setError(status != ExportSuccess);
2708                 if (status != ExportSuccess)
2709                         dr.setMessage(bformat(_("Error exporting to format: %1$s."),
2710                                               from_utf8(format)));
2711                 break;
2712         }
2713
2714         case LFUN_BUILD_PROGRAM: {
2715                 ExportStatus const status = doExport("program", true);
2716                 dr.setError(status != ExportSuccess);
2717                 if (status != ExportSuccess)
2718                         dr.setMessage(_("Error generating literate programming code."));
2719                 break;
2720         }
2721
2722         case LFUN_BUFFER_EXPORT_CUSTOM: {
2723                 string format_name;
2724                 string command = split(argument, format_name, ' ');
2725                 Format const * format = theFormats().getFormat(format_name);
2726                 if (!format) {
2727                         lyxerr << "Format \"" << format_name
2728                                 << "\" not recognized!"
2729                                 << endl;
2730                         break;
2731                 }
2732
2733                 // The name of the file created by the conversion process
2734                 string filename;
2735
2736                 // Output to filename
2737                 if (format->name() == "lyx") {
2738                         string const latexname = latexName(false);
2739                         filename = changeExtension(latexname,
2740                                 format->extension());
2741                         filename = addName(temppath(), filename);
2742
2743                         if (!writeFile(FileName(filename)))
2744                                 break;
2745
2746                 } else {
2747                         doExport(format_name, true, filename);
2748                 }
2749
2750                 // Substitute $$FName for filename
2751                 if (!contains(command, "$$FName"))
2752                         command = "( " + command + " ) < $$FName";
2753                 command = subst(command, "$$FName", filename);
2754
2755                 // Execute the command in the background
2756                 Systemcall call;
2757                 call.startscript(Systemcall::DontWait, command,
2758                                  filePath(), layoutPos());
2759                 break;
2760         }
2761
2762         // FIXME: There is need for a command-line import.
2763         /*
2764         case LFUN_BUFFER_IMPORT:
2765                 doImport(argument);
2766                 break;
2767         */
2768
2769         case LFUN_BUFFER_AUTO_SAVE:
2770                 autoSave();
2771                 resetAutosaveTimers();
2772                 break;
2773
2774         case LFUN_BRANCH_ACTIVATE:
2775         case LFUN_BRANCH_DEACTIVATE:
2776         case LFUN_BRANCH_MASTER_ACTIVATE:
2777         case LFUN_BRANCH_MASTER_DEACTIVATE: {
2778                 bool const master = (func.action() == LFUN_BRANCH_MASTER_ACTIVATE
2779                                      || func.action() == LFUN_BRANCH_MASTER_DEACTIVATE);
2780                 Buffer * buf = master ? const_cast<Buffer *>(masterBuffer())
2781                                       : this;
2782
2783                 docstring const branch_name = func.argument();
2784                 // the case without a branch name is handled elsewhere
2785                 if (branch_name.empty()) {
2786                         dispatched = false;
2787                         break;
2788                 }
2789                 Branch * branch = buf->params().branchlist().find(branch_name);
2790                 if (!branch) {
2791                         LYXERR0("Branch " << branch_name << " does not exist.");
2792                         dr.setError(true);
2793                         docstring const msg =
2794                                 bformat(_("Branch \"%1$s\" does not exist."), branch_name);
2795                         dr.setMessage(msg);
2796                         break;
2797                 }
2798                 bool const activate = (func.action() == LFUN_BRANCH_ACTIVATE
2799                                        || func.action() == LFUN_BRANCH_MASTER_ACTIVATE);
2800                 if (branch->isSelected() != activate) {
2801                         buf->undo().recordUndoBufferParams(CursorData());
2802                         branch->setSelected(activate);
2803                         dr.setError(false);
2804                         dr.screenUpdate(Update::Force);
2805                         dr.forceBufferUpdate();
2806                 }
2807                 break;
2808         }
2809
2810         case LFUN_BRANCH_ADD: {
2811                 docstring branchnames = func.argument();
2812                 if (branchnames.empty()) {
2813                         dispatched = false;
2814                         break;
2815                 }
2816                 BranchList & branch_list = params().branchlist();
2817                 vector<docstring> const branches =
2818                         getVectorFromString(branchnames, branch_list.separator());
2819                 docstring msg;
2820                 for (docstring const & branch_name : branches) {
2821                         Branch * branch = branch_list.find(branch_name);
2822                         if (branch) {
2823                                 LYXERR0("Branch " << branch_name << " already exists.");
2824                                 dr.setError(true);
2825                                 if (!msg.empty())
2826                                         msg += ("\n");
2827                                 msg += bformat(_("Branch \"%1$s\" already exists."), branch_name);
2828                         } else {
2829                                 undo().recordUndoBufferParams(CursorData());
2830                                 branch_list.add(branch_name);
2831                                 branch = branch_list.find(branch_name);
2832                                 string const x11hexname = X11hexname(branch->color());
2833                                 docstring const str = branch_name + ' ' + from_ascii(x11hexname);
2834                                 lyx::dispatch(FuncRequest(LFUN_SET_COLOR, str));
2835                                 dr.setError(false);
2836                                 dr.screenUpdate(Update::Force);
2837                         }
2838                 }
2839                 if (!msg.empty())
2840                         dr.setMessage(msg);
2841                 break;
2842         }
2843
2844         case LFUN_BRANCHES_RENAME: {
2845                 if (func.argument().empty())
2846                         break;
2847
2848                 docstring const oldname = from_utf8(func.getArg(0));
2849                 docstring const newname = from_utf8(func.getArg(1));
2850                 InsetIterator it  = inset_iterator_begin(inset());
2851                 InsetIterator const end = inset_iterator_end(inset());
2852                 bool success = false;
2853                 for (; it != end; ++it) {
2854                         if (it->lyxCode() == BRANCH_CODE) {
2855                                 InsetBranch & ins = static_cast<InsetBranch &>(*it);
2856                                 if (ins.branch() == oldname) {
2857                                         undo().recordUndo(CursorData(it));
2858                                         ins.rename(newname);
2859                                         success = true;
2860                                         continue;
2861                                 }
2862                         }
2863                         if (it->lyxCode() == INCLUDE_CODE) {
2864                                 // get buffer of external file
2865                                 InsetInclude const & ins =
2866                                         static_cast<InsetInclude const &>(*it);
2867                                 Buffer * child = ins.getChildBuffer();
2868                                 if (!child)
2869                                         continue;
2870                                 child->dispatch(func, dr);
2871                         }
2872                 }
2873
2874                 if (success) {
2875                         dr.screenUpdate(Update::Force);
2876                         dr.forceBufferUpdate();
2877                 }
2878                 break;
2879         }
2880
2881         case LFUN_BUFFER_VIEW_CACHE:
2882                 if (!theFormats().view(*this, d->preview_file_,
2883                                   d->preview_format_))
2884                         dr.setMessage(_("Error viewing the output file."));
2885                 break;
2886
2887         case LFUN_CHANGES_TRACK:
2888                 if (params().save_transient_properties)
2889                         undo().recordUndoBufferParams(CursorData());
2890                 params().track_changes = !params().track_changes;
2891                 if (!params().track_changes)
2892                         dr.forceChangesUpdate();
2893                 break;
2894
2895         case LFUN_CHANGES_OUTPUT:
2896                 if (params().save_transient_properties)
2897                         undo().recordUndoBufferParams(CursorData());
2898                 params().output_changes = !params().output_changes;
2899                 if (params().output_changes) {
2900                         bool dvipost    = LaTeXFeatures::isAvailable("dvipost");
2901                         bool xcolorulem = LaTeXFeatures::isAvailable("ulem") &&
2902                                           LaTeXFeatures::isAvailable("xcolor");
2903
2904                         if (!dvipost && !xcolorulem) {
2905                                 Alert::warning(_("Changes not shown in LaTeX output"),
2906                                                _("Changes will not be highlighted in LaTeX output, "
2907                                                  "because neither dvipost nor xcolor/ulem are installed.\n"
2908                                                  "Please install these packages or redefine "
2909                                                  "\\lyxadded and \\lyxdeleted in the LaTeX preamble."));
2910                         } else if (!xcolorulem) {
2911                                 Alert::warning(_("Changes not shown in LaTeX output"),
2912                                                _("Changes will not be highlighted in LaTeX output "
2913                                                  "when using pdflatex, because xcolor and ulem are not installed.\n"
2914                                                  "Please install both packages or redefine "
2915                                                  "\\lyxadded and \\lyxdeleted in the LaTeX preamble."));
2916                         }
2917                 }
2918                 break;
2919
2920         case LFUN_BUFFER_TOGGLE_COMPRESSION:
2921                 // turn compression on/off
2922                 undo().recordUndoBufferParams(CursorData());
2923                 params().compressed = !params().compressed;
2924                 break;
2925
2926         case LFUN_BUFFER_TOGGLE_OUTPUT_SYNC:
2927                 undo().recordUndoBufferParams(CursorData());
2928                 params().output_sync = !params().output_sync;
2929                 break;
2930
2931         case LFUN_BUFFER_ANONYMIZE: {
2932                 undo().recordUndoFullBuffer(CursorData());
2933                 CursorData cur(doc_iterator_begin(this));
2934                 for ( ; cur ; cur.forwardPar())
2935                         cur.paragraph().anonymize();
2936                 dr.forceBufferUpdate();
2937                 break;
2938         }
2939
2940         default:
2941                 dispatched = false;
2942                 break;
2943         }
2944         dr.dispatched(dispatched);
2945 }
2946
2947
2948 void Buffer::changeLanguage(Language const * from, Language const * to)
2949 {
2950         LASSERT(from, return);
2951         LASSERT(to, return);
2952
2953         for_each(par_iterator_begin(),
2954                  par_iterator_end(),
2955                  bind(&Paragraph::changeLanguage, _1, params(), from, to));
2956 }
2957
2958
2959 bool Buffer::isMultiLingual() const
2960 {
2961         ParConstIterator end = par_iterator_end();
2962         for (ParConstIterator it = par_iterator_begin(); it != end; ++it)
2963                 if (it->isMultiLingual(params()))
2964                         return true;
2965
2966         return false;
2967 }
2968
2969
2970 std::set<Language const *> Buffer::getLanguages() const
2971 {
2972         std::set<Language const *> langs;
2973         getLanguages(langs);
2974         return langs;
2975 }
2976
2977
2978 void Buffer::getLanguages(std::set<Language const *> & langs) const
2979 {
2980         ParConstIterator end = par_iterator_end();
2981         // add the buffer language, even if it's not actively used
2982         langs.insert(language());
2983         // iterate over the paragraphs
2984         for (ParConstIterator it = par_iterator_begin(); it != end; ++it)
2985                 it->getLanguages(langs);
2986         // also children
2987         ListOfBuffers clist = getDescendents();
2988         for (auto const & cit : clist)
2989                 cit->getLanguages(langs);
2990 }
2991
2992
2993 DocIterator Buffer::getParFromID(int const id) const
2994 {
2995         Buffer * buf = const_cast<Buffer *>(this);
2996         if (id < 0)
2997                 // This means non-existent
2998                 return doc_iterator_end(buf);
2999
3000         for (DocIterator it = doc_iterator_begin(buf); !it.atEnd(); it.forwardPar())
3001                 if (it.paragraph().id() == id)
3002                         return it;
3003
3004         return doc_iterator_end(buf);
3005 }
3006
3007
3008 bool Buffer::hasParWithID(int const id) const
3009 {
3010         return !getParFromID(id).atEnd();
3011 }
3012
3013
3014 ParIterator Buffer::par_iterator_begin()
3015 {
3016         return ParIterator(doc_iterator_begin(this));
3017 }
3018
3019
3020 ParIterator Buffer::par_iterator_end()
3021 {
3022         return ParIterator(doc_iterator_end(this));
3023 }
3024
3025
3026 ParConstIterator Buffer::par_iterator_begin() const
3027 {
3028         return ParConstIterator(doc_iterator_begin(this));
3029 }
3030
3031
3032 ParConstIterator Buffer::par_iterator_end() const
3033 {
3034         return ParConstIterator(doc_iterator_end(this));
3035 }
3036
3037
3038 Language const * Buffer::language() const
3039 {
3040         return params().language;
3041 }
3042
3043
3044 docstring const Buffer::B_(string const & l10n) const
3045 {
3046         return params().B_(l10n);
3047 }
3048
3049
3050 bool Buffer::isClean() const
3051 {
3052         return d->lyx_clean;
3053 }
3054
3055
3056 bool Buffer::isChecksumModified() const
3057 {
3058         LASSERT(d->filename.exists(), return false);
3059         return d->checksum_ != d->filename.checksum();
3060 }
3061
3062
3063 void Buffer::saveCheckSum() const
3064 {
3065         FileName const & file = d->filename;
3066         file.refresh();
3067         d->checksum_ = file.exists() ? file.checksum()
3068                 : 0; // in the case of save to a new file.
3069 }
3070
3071
3072 void Buffer::markClean() const
3073 {
3074         if (!d->lyx_clean) {
3075                 d->lyx_clean = true;
3076                 updateTitles();
3077         }
3078         // if the .lyx file has been saved, we don't need an
3079         // autosave
3080         d->bak_clean = true;
3081         d->undo_.markDirty();
3082         clearExternalModification();
3083 }
3084
3085
3086 void Buffer::setUnnamed(bool flag)
3087 {
3088         d->unnamed = flag;
3089 }
3090
3091
3092 bool Buffer::isUnnamed() const
3093 {
3094         return d->unnamed;
3095 }
3096
3097
3098 /// \note
3099 /// Don't check unnamed, here: isInternal() is used in
3100 /// newBuffer(), where the unnamed flag has not been set by anyone
3101 /// yet. Also, for an internal buffer, there should be no need for
3102 /// retrieving fileName() nor for checking if it is unnamed or not.
3103 bool Buffer::isInternal() const
3104 {
3105         return d->internal_buffer;
3106 }
3107
3108
3109 void Buffer::setInternal(bool flag)
3110 {
3111         d->internal_buffer = flag;
3112 }
3113
3114
3115 void Buffer::markDirty()
3116 {
3117         if (d->lyx_clean) {
3118                 d->lyx_clean = false;
3119                 updateTitles();
3120         }
3121         d->bak_clean = false;
3122
3123         for (auto & depit : d->dep_clean)
3124                 depit.second = false;
3125 }
3126
3127
3128 FileName Buffer::fileName() const
3129 {
3130         return d->filename;
3131 }
3132
3133
3134 string Buffer::absFileName() const
3135 {
3136         return d->filename.absFileName();
3137 }
3138
3139
3140 string Buffer::filePath() const
3141 {
3142         string const abs = d->filename.onlyPath().absFileName();
3143         if (abs.empty())
3144                 return abs;
3145         int last = abs.length() - 1;
3146
3147         return abs[last] == '/' ? abs : abs + '/';
3148 }
3149
3150
3151 DocFileName Buffer::getReferencedFileName(string const & fn) const
3152 {
3153         DocFileName result;
3154         if (FileName::isAbsolute(fn) || !FileName::isAbsolute(params().origin))
3155                 result.set(fn, filePath());
3156         else {
3157                 // filePath() ends with a path separator
3158                 FileName const test(filePath() + fn);
3159                 if (test.exists())
3160                         result.set(fn, filePath());
3161                 else
3162                         result.set(fn, params().origin);
3163         }
3164
3165         return result;
3166 }
3167
3168
3169 string const Buffer::prepareFileNameForLaTeX(string const & name,
3170                                              string const & ext, bool nice) const
3171 {
3172         string const fname = makeAbsPath(name, filePath()).absFileName();
3173         if (FileName::isAbsolute(name) || !FileName(fname + ext).isReadableFile())
3174                 return name;
3175         if (!nice)
3176                 return fname;
3177
3178         // FIXME UNICODE
3179         return to_utf8(makeRelPath(from_utf8(fname),
3180                 from_utf8(masterBuffer()->filePath())));
3181 }
3182
3183
3184 vector<docstring> const Buffer::prepareBibFilePaths(OutputParams const & runparams,
3185                                                 FileNamePairList const bibfilelist,
3186                                                 bool const add_extension) const
3187 {
3188         // If we are processing the LaTeX file in a temp directory then
3189         // copy the .bib databases to this temp directory, mangling their
3190         // names in the process. Store this mangled name in the list of
3191         // all databases.
3192         // (We need to do all this because BibTeX *really*, *really*
3193         // can't handle "files with spaces" and Windows users tend to
3194         // use such filenames.)
3195         // Otherwise, store the (maybe absolute) path to the original,
3196         // unmangled database name.
3197
3198         vector<docstring> res;
3199
3200         // determine the export format
3201         string const tex_format = flavor2format(runparams.flavor);
3202
3203         // check for spaces in paths
3204         bool found_space = false;
3205
3206         for (auto const & bit : bibfilelist) {
3207                 string utf8input = to_utf8(bit.first);
3208                 string database =
3209                         prepareFileNameForLaTeX(utf8input, ".bib", runparams.nice);
3210                 FileName try_in_file =
3211                         makeAbsPath(database + ".bib", filePath());
3212                 bool not_from_texmf = try_in_file.isReadableFile();
3213                 // If the file has not been found, try with the real file name
3214                 // (it might come from a child in a sub-directory)
3215                 if (!not_from_texmf) {
3216                         try_in_file = bit.second;
3217                         if (try_in_file.isReadableFile()) {
3218                                 // Check if the file is in texmf
3219                                 FileName kpsefile(findtexfile(changeExtension(utf8input, "bib"), "bib", true));
3220                                 not_from_texmf = kpsefile.empty()
3221                                                 || kpsefile.absFileName() != try_in_file.absFileName();
3222                                 if (not_from_texmf)
3223                                         // If this exists, make path relative to the master
3224                                         // FIXME Unicode
3225                                         database =
3226                                                 removeExtension(prepareFileNameForLaTeX(
3227                                                                                         to_utf8(makeRelPath(from_utf8(try_in_file.absFileName()),
3228                                                                                                                                 from_utf8(filePath()))),
3229                                                                                         ".bib", runparams.nice));
3230                         }
3231                 }
3232
3233                 if (!runparams.inComment && !runparams.dryrun && !runparams.nice &&
3234                     not_from_texmf) {
3235                         // mangledFileName() needs the extension
3236                         DocFileName const in_file = DocFileName(try_in_file);
3237                         database = removeExtension(in_file.mangledFileName());
3238                         FileName const out_file = makeAbsPath(database + ".bib",
3239                                         masterBuffer()->temppath());
3240                         bool const success = in_file.copyTo(out_file);
3241                         if (!success) {
3242                                 LYXERR0("Failed to copy '" << in_file
3243                                        << "' to '" << out_file << "'");
3244                         }
3245                 } else if (!runparams.inComment && runparams.nice && not_from_texmf) {
3246                         runparams.exportdata->addExternalFile(tex_format, try_in_file, database + ".bib");
3247                         if (!isValidLaTeXFileName(database)) {
3248                                 frontend::Alert::warning(_("Invalid filename"),
3249                                          _("The following filename will cause troubles "
3250                                                "when running the exported file through LaTeX: ") +
3251                                              from_utf8(database));
3252                         }
3253                         if (!isValidDVIFileName(database)) {
3254                                 frontend::Alert::warning(_("Problematic filename for DVI"),
3255                                          _("The following filename can cause troubles "
3256                                                "when running the exported file through LaTeX "
3257                                                    "and opening the resulting DVI: ") +
3258                                              from_utf8(database), true);
3259                         }
3260                 }
3261
3262                 if (add_extension)
3263                         database += ".bib";
3264
3265                 // FIXME UNICODE
3266                 docstring const path = from_utf8(latex_path(database));
3267
3268                 if (contains(path, ' '))
3269                         found_space = true;
3270
3271                 if (find(res.begin(), res.end(), path) == res.end())
3272                         res.push_back(path);
3273         }
3274
3275         // Check if there are spaces in the path and warn BibTeX users, if so.
3276         // (biber can cope with such paths)
3277         if (!prefixIs(runparams.bibtex_command, "biber")) {
3278                 // Post this warning only once.
3279                 static bool warned_about_spaces = false;
3280                 if (!warned_about_spaces &&
3281                     runparams.nice && found_space) {
3282                         warned_about_spaces = true;
3283                         Alert::warning(_("Export Warning!"),
3284                                        _("There are spaces in the paths to your BibTeX databases.\n"
3285                                                       "BibTeX will be unable to find them."));
3286                 }
3287         }
3288
3289         return res;
3290 }
3291
3292
3293
3294 string Buffer::layoutPos() const
3295 {
3296         return d->layout_position;
3297 }
3298
3299
3300 void Buffer::setLayoutPos(string const & path)
3301 {
3302         if (path.empty()) {
3303                 d->layout_position.clear();
3304                 return;
3305         }
3306
3307         LATTEST(FileName::isAbsolute(path));
3308
3309         d->layout_position =
3310                 to_utf8(makeRelPath(from_utf8(path), from_utf8(filePath())));
3311
3312         if (d->layout_position.empty())
3313                 d->layout_position = ".";
3314 }
3315
3316
3317 bool Buffer::hasReadonlyFlag() const
3318 {
3319         return d->read_only;
3320 }
3321
3322
3323 bool Buffer::isReadonly() const
3324 {
3325         return hasReadonlyFlag() || notifiesExternalModification();
3326 }
3327
3328
3329 void Buffer::setParent(Buffer const * buffer)
3330 {
3331         // Avoids recursive include.
3332         d->setParent(buffer == this ? 0 : buffer);
3333         updateMacros();
3334 }
3335
3336
3337 Buffer const * Buffer::parent() const
3338 {
3339         return d->parent();
3340 }
3341
3342
3343 ListOfBuffers Buffer::allRelatives() const
3344 {
3345         ListOfBuffers lb = masterBuffer()->getDescendents();
3346         lb.push_front(const_cast<Buffer *>(masterBuffer()));
3347         return lb;
3348 }
3349
3350
3351 Buffer const * Buffer::masterBuffer() const
3352 {
3353         // FIXME Should be make sure we are not in some kind
3354         // of recursive include? A -> B -> A will crash this.
3355         Buffer const * const pbuf = d->parent();
3356         if (!pbuf)
3357                 return this;
3358
3359         return pbuf->masterBuffer();
3360 }
3361
3362
3363 bool Buffer::isChild(Buffer * child) const
3364 {
3365         return d->children_positions.find(child) != d->children_positions.end();
3366 }
3367
3368
3369 DocIterator Buffer::firstChildPosition(Buffer const * child)
3370 {
3371         Impl::BufferPositionMap::iterator it;
3372         it = d->children_positions.find(child);
3373         if (it == d->children_positions.end())
3374                 return DocIterator(this);
3375         return it->second;
3376 }
3377
3378
3379 bool Buffer::hasChildren() const
3380 {
3381         return !d->children_positions.empty();
3382 }
3383
3384
3385 void Buffer::collectChildren(ListOfBuffers & clist, bool grand_children) const
3386 {
3387         // loop over children
3388         for (auto const & p : d->children_positions) {
3389                 Buffer * child = const_cast<Buffer *>(p.first);
3390                 // No duplicates
3391                 ListOfBuffers::const_iterator bit = find(clist.begin(), clist.end(), child);
3392                 if (bit != clist.end())
3393                         continue;
3394                 clist.push_back(child);
3395                 if (grand_children)
3396                         // there might be grandchildren
3397                         child->collectChildren(clist, true);
3398         }
3399 }
3400
3401
3402 ListOfBuffers Buffer::getChildren() const
3403 {
3404         ListOfBuffers v;
3405         collectChildren(v, false);
3406         // Make sure we have not included ourselves.
3407         ListOfBuffers::iterator bit = find(v.begin(), v.end(), this);
3408         if (bit != v.end()) {
3409                 LYXERR0("Recursive include detected in `" << fileName() << "'.");
3410                 v.erase(bit);
3411         }
3412         return v;
3413 }
3414
3415
3416 ListOfBuffers Buffer::getDescendents() const
3417 {
3418         ListOfBuffers v;
3419         collectChildren(v, true);
3420         // Make sure we have not included ourselves.
3421         ListOfBuffers::iterator bit = find(v.begin(), v.end(), this);
3422         if (bit != v.end()) {
3423                 LYXERR0("Recursive include detected in `" << fileName() << "'.");
3424                 v.erase(bit);
3425         }
3426         return v;
3427 }
3428
3429
3430 template<typename M>
3431 typename M::const_iterator greatest_below(M & m, typename M::key_type const & x)
3432 {
3433         if (m.empty())
3434                 return m.end();
3435
3436         typename M::const_iterator it = m.lower_bound(x);
3437         if (it == m.begin())
3438                 return m.end();
3439
3440         it--;
3441         return it;
3442 }
3443
3444
3445 MacroData const * Buffer::Impl::getBufferMacro(docstring const & name,
3446                                          DocIterator const & pos) const
3447 {
3448         LYXERR(Debug::MACROS, "Searching for " << to_ascii(name) << " at " << pos);
3449
3450         // if paragraphs have no macro context set, pos will be empty
3451         if (pos.empty())
3452                 return 0;
3453
3454         // we haven't found anything yet
3455         DocIterator bestPos = owner_->par_iterator_begin();
3456         MacroData const * bestData = 0;
3457
3458         // find macro definitions for name
3459         NamePositionScopeMacroMap::const_iterator nameIt = macros.find(name);
3460         if (nameIt != macros.end()) {
3461                 // find last definition in front of pos or at pos itself
3462                 PositionScopeMacroMap::const_iterator it
3463                         = greatest_below(nameIt->second, pos);
3464                 if (it != nameIt->second.end()) {
3465                         while (true) {
3466                                 // scope ends behind pos?
3467                                 if (pos < it->second.scope) {
3468                                         // Looks good, remember this. If there
3469                                         // is no external macro behind this,
3470                                         // we found the right one already.
3471                                         bestPos = it->first;
3472                                         bestData = &it->second.macro;
3473                                         break;
3474                                 }
3475
3476                                 // try previous macro if there is one
3477                                 if (it == nameIt->second.begin())
3478                                         break;
3479                                 --it;
3480                         }
3481                 }
3482         }
3483
3484         // find macros in included files
3485         PositionScopeBufferMap::const_iterator it
3486                 = greatest_below(position_to_children, pos);
3487         if (it == position_to_children.end())
3488                 // no children before
3489                 return bestData;
3490
3491         while (true) {
3492                 // do we know something better (i.e. later) already?
3493                 if (it->first < bestPos )
3494                         break;
3495
3496                 // scope ends behind pos?
3497                 if (pos < it->second.scope
3498                         && (cloned_buffer_ ||
3499                             theBufferList().isLoaded(it->second.buffer))) {
3500                         // look for macro in external file
3501                         macro_lock = true;
3502                         MacroData const * data
3503                                 = it->second.buffer->getMacro(name, false);
3504                         macro_lock = false;
3505                         if (data) {
3506                                 bestPos = it->first;
3507                                 bestData = data;
3508                                 break;
3509                         }
3510                 }
3511
3512                 // try previous file if there is one
3513                 if (it == position_to_children.begin())
3514                         break;
3515                 --it;
3516         }
3517
3518         // return the best macro we have found
3519         return bestData;
3520 }
3521
3522
3523 MacroData const * Buffer::getMacro(docstring const & name,
3524         DocIterator const & pos, bool global) const
3525 {
3526         if (d->macro_lock)
3527                 return 0;
3528
3529         // query buffer macros
3530         MacroData const * data = d->getBufferMacro(name, pos);
3531         if (data != 0)
3532                 return data;
3533
3534         // If there is a master buffer, query that
3535         Buffer const * const pbuf = d->parent();
3536         if (pbuf) {
3537                 d->macro_lock = true;
3538                 MacroData const * macro = pbuf->getMacro(
3539                         name, *this, false);
3540                 d->macro_lock = false;
3541                 if (macro)
3542                         return macro;
3543         }
3544
3545         if (global) {
3546                 data = MacroTable::globalMacros().get(name);
3547                 if (data != 0)
3548                         return data;
3549         }
3550
3551         return 0;
3552 }
3553
3554
3555 MacroData const * Buffer::getMacro(docstring const & name, bool global) const
3556 {
3557         // set scope end behind the last paragraph
3558         DocIterator scope = par_iterator_begin();
3559         scope.pit() = scope.lastpit() + 1;
3560
3561         return getMacro(name, scope, global);
3562 }
3563
3564
3565 MacroData const * Buffer::getMacro(docstring const & name,
3566         Buffer const & child, bool global) const
3567 {
3568         // look where the child buffer is included first
3569         Impl::BufferPositionMap::iterator it = d->children_positions.find(&child);
3570         if (it == d->children_positions.end())
3571                 return 0;
3572
3573         // check for macros at the inclusion position
3574         return getMacro(name, it->second, global);
3575 }
3576
3577
3578 void Buffer::Impl::updateMacros(DocIterator & it, DocIterator & scope)
3579 {
3580         pit_type const lastpit = it.lastpit();
3581
3582         // look for macros in each paragraph
3583         while (it.pit() <= lastpit) {
3584                 Paragraph & par = it.paragraph();
3585
3586                 // FIXME Can this be done with the new-style iterators?
3587                 // iterate over the insets of the current paragraph
3588                 for (auto const & insit : par.insetList()) {
3589                         it.pos() = insit.pos;
3590
3591                         // is it a nested text inset?
3592                         if (insit.inset->asInsetText()) {
3593                                 // Inset needs its own scope?
3594                                 InsetText const * itext = insit.inset->asInsetText();
3595                                 bool newScope = itext->isMacroScope();
3596
3597                                 // scope which ends just behind the inset
3598                                 DocIterator insetScope = it;
3599                                 ++insetScope.pos();
3600
3601                                 // collect macros in inset
3602                                 it.push_back(CursorSlice(*insit.inset));
3603                                 updateMacros(it, newScope ? insetScope : scope);
3604                                 it.pop_back();
3605                                 continue;
3606                         }
3607
3608                         if (insit.inset->asInsetTabular()) {
3609                                 CursorSlice slice(*insit.inset);
3610                                 size_t const numcells = slice.nargs();
3611                                 for (; slice.idx() < numcells; slice.forwardIdx()) {
3612                                         it.push_back(slice);
3613                                         updateMacros(it, scope);
3614                                         it.pop_back();
3615                                 }
3616                                 continue;
3617                         }
3618
3619                         // is it an external file?
3620                         if (insit.inset->lyxCode() == INCLUDE_CODE) {
3621                                 // get buffer of external file
3622                                 InsetInclude const & incinset =
3623                                         static_cast<InsetInclude const &>(*insit.inset);
3624                                 macro_lock = true;
3625                                 Buffer * child = incinset.getChildBuffer();
3626                                 macro_lock = false;
3627                                 if (!child)
3628                                         continue;
3629
3630                                 // register its position, but only when it is
3631                                 // included first in the buffer
3632                                 if (children_positions.find(child) ==
3633                                         children_positions.end())
3634                                                 children_positions[child] = it;
3635
3636                                 // register child with its scope
3637                                 position_to_children[it] = Impl::ScopeBuffer(scope, child);
3638                                 continue;
3639                         }
3640
3641                         InsetMath * im = insit.inset->asInsetMath();
3642                         if (doing_export && im)  {
3643                                 InsetMathHull * hull = im->asHullInset();
3644                                 if (hull)
3645                                         hull->recordLocation(it);
3646                         }
3647
3648                         if (insit.inset->lyxCode() != MATHMACRO_CODE)
3649                                 continue;
3650
3651                         // get macro data
3652                         InsetMathMacroTemplate & macroTemplate =
3653                                 *insit.inset->asInsetMath()->asMacroTemplate();
3654                         MacroContext mc(owner_, it);
3655                         macroTemplate.updateToContext(mc);
3656
3657                         // valid?
3658                         bool valid = macroTemplate.validMacro();
3659                         // FIXME: Should be fixNameAndCheckIfValid() in fact,
3660                         // then the BufferView's cursor will be invalid in
3661                         // some cases which leads to crashes.
3662                         if (!valid)
3663                                 continue;
3664
3665                         // register macro
3666                         // FIXME (Abdel), I don't understand why we pass 'it' here
3667                         // instead of 'macroTemplate' defined above... is this correct?
3668                         macros[macroTemplate.name()][it] =
3669                                 Impl::ScopeMacro(scope, MacroData(const_cast<Buffer *>(owner_), it));
3670                 }
3671
3672                 // next paragraph
3673                 it.pit()++;
3674                 it.pos() = 0;
3675         }
3676 }
3677
3678
3679 void Buffer::updateMacros() const
3680 {
3681         if (d->macro_lock)
3682                 return;
3683
3684         LYXERR(Debug::MACROS, "updateMacro of " << d->filename.onlyFileName());
3685
3686         // start with empty table
3687         d->macros.clear();
3688         d->children_positions.clear();
3689         d->position_to_children.clear();
3690
3691         // Iterate over buffer, starting with first paragraph
3692         // The scope must be bigger than any lookup DocIterator
3693         // later. For the global lookup, lastpit+1 is used, hence
3694         // we use lastpit+2 here.
3695         DocIterator it = par_iterator_begin();
3696         DocIterator outerScope = it;
3697         outerScope.pit() = outerScope.lastpit() + 2;
3698         d->updateMacros(it, outerScope);
3699 }
3700
3701
3702 void Buffer::getUsedBranches(std::list<docstring> & result, bool const from_master) const
3703 {
3704         InsetIterator it  = inset_iterator_begin(inset());
3705         InsetIterator const end = inset_iterator_end(inset());
3706         for (; it != end; ++it) {
3707                 if (it->lyxCode() == BRANCH_CODE) {
3708                         InsetBranch & br = static_cast<InsetBranch &>(*it);
3709                         docstring const name = br.branch();
3710                         if (!from_master && !params().branchlist().find(name))
3711                                 result.push_back(name);
3712                         else if (from_master && !masterBuffer()->params().branchlist().find(name))
3713                                 result.push_back(name);
3714                         continue;
3715                 }
3716                 if (it->lyxCode() == INCLUDE_CODE) {
3717                         // get buffer of external file
3718                         InsetInclude const & ins =
3719                                 static_cast<InsetInclude const &>(*it);
3720                         Buffer * child = ins.getChildBuffer();
3721                         if (!child)
3722                                 continue;
3723                         child->getUsedBranches(result, true);
3724                 }
3725         }
3726         // remove duplicates
3727         result.unique();
3728 }
3729
3730
3731 void Buffer::updateMacroInstances(UpdateType utype) const
3732 {
3733         LYXERR(Debug::MACROS, "updateMacroInstances for "
3734                 << d->filename.onlyFileName());
3735         DocIterator it = doc_iterator_begin(this);
3736         it.forwardInset();
3737         DocIterator const end = doc_iterator_end(this);
3738         for (; it != end; it.forwardInset()) {
3739                 // look for MathData cells in InsetMathNest insets
3740                 InsetMath * minset = it.nextInset()->asInsetMath();
3741                 if (!minset)
3742                         continue;
3743
3744                 // update macro in all cells of the InsetMathNest
3745                 DocIterator::idx_type n = minset->nargs();
3746                 MacroContext mc = MacroContext(this, it);
3747                 for (DocIterator::idx_type i = 0; i < n; ++i) {
3748                         MathData & data = minset->cell(i);
3749                         data.updateMacros(0, mc, utype, 0);
3750                 }
3751         }
3752 }
3753
3754
3755 void Buffer::listMacroNames(MacroNameSet & macros) const
3756 {
3757         if (d->macro_lock)
3758                 return;
3759
3760         d->macro_lock = true;
3761
3762         // loop over macro names
3763         for (auto const & nameit : d->macros)
3764                 macros.insert(nameit.first);
3765
3766         // loop over children
3767         for (auto const & p : d->children_positions) {
3768                 Buffer * child = const_cast<Buffer *>(p.first);
3769                 // The buffer might have been closed (see #10766).
3770                 if (theBufferList().isLoaded(child))
3771                         child->listMacroNames(macros);
3772         }
3773
3774         // call parent
3775         Buffer const * const pbuf = d->parent();
3776         if (pbuf)
3777                 pbuf->listMacroNames(macros);
3778
3779         d->macro_lock = false;
3780 }
3781
3782
3783 void Buffer::listParentMacros(MacroSet & macros, LaTeXFeatures & features) const
3784 {
3785         Buffer const * const pbuf = d->parent();
3786         if (!pbuf)
3787                 return;
3788
3789         MacroNameSet names;
3790         pbuf->listMacroNames(names);
3791
3792         // resolve macros
3793         for (auto const & mit : names) {
3794                 // defined?
3795                 MacroData const * data = pbuf->getMacro(mit, *this, false);
3796                 if (data) {
3797                         macros.insert(data);
3798
3799                         // we cannot access the original InsetMathMacroTemplate anymore
3800                         // here to calls validate method. So we do its work here manually.
3801                         // FIXME: somehow make the template accessible here.
3802                         if (data->optionals() > 0)
3803                                 features.require("xargs");
3804                 }
3805         }
3806 }
3807
3808
3809 Buffer::References & Buffer::getReferenceCache(docstring const & label)
3810 {
3811         if (d->parent())
3812                 return const_cast<Buffer *>(masterBuffer())->getReferenceCache(label);
3813
3814         RefCache::iterator it = d->ref_cache_.find(label);
3815         if (it != d->ref_cache_.end())
3816                 return it->second.second;
3817
3818         static InsetLabel const * dummy_il = 0;
3819         static References const dummy_refs = References();
3820         it = d->ref_cache_.insert(
3821                 make_pair(label, make_pair(dummy_il, dummy_refs))).first;
3822         return it->second.second;
3823 }
3824
3825
3826 Buffer::References const & Buffer::references(docstring const & label) const
3827 {
3828         return const_cast<Buffer *>(this)->getReferenceCache(label);
3829 }
3830
3831
3832 void Buffer::addReference(docstring const & label, Inset * inset, ParIterator it)
3833 {
3834         References & refs = getReferenceCache(label);
3835         refs.push_back(make_pair(inset, it));
3836 }
3837
3838
3839 void Buffer::setInsetLabel(docstring const & label, InsetLabel const * il)
3840 {
3841         masterBuffer()->d->ref_cache_[label].first = il;
3842 }
3843
3844
3845 InsetLabel const * Buffer::insetLabel(docstring const & label) const
3846 {
3847         return masterBuffer()->d->ref_cache_[label].first;
3848 }
3849
3850
3851 void Buffer::clearReferenceCache() const
3852 {
3853         if (!d->parent())
3854                 d->ref_cache_.clear();
3855 }
3856
3857
3858 void Buffer::changeRefsIfUnique(docstring const & from, docstring const & to)
3859 {
3860         //FIXME: This does not work for child documents yet.
3861         reloadBibInfoCache();
3862
3863         // Check if the label 'from' appears more than once
3864         vector<docstring> labels;
3865         for (auto const & bibit : masterBibInfo())
3866                 labels.push_back(bibit.first);
3867
3868         if (count(labels.begin(), labels.end(), from) > 1)
3869                 return;
3870
3871         string const paramName = "key";
3872         InsetIterator it = inset_iterator_begin(inset());
3873         for (; it; ++it) {
3874                 if (it->lyxCode() != CITE_CODE)
3875                         continue;
3876                 InsetCommand * inset = it->asInsetCommand();
3877                 docstring const oldValue = inset->getParam(paramName);
3878                 if (oldValue == from)
3879                         inset->setParam(paramName, to);
3880         }
3881 }
3882
3883 // returns NULL if id-to-row conversion is unsupported
3884 unique_ptr<TexRow> Buffer::getSourceCode(odocstream & os, string const & format,
3885                                          pit_type par_begin, pit_type par_end,
3886                                          OutputWhat output, bool master) const
3887 {
3888         unique_ptr<TexRow> texrow;
3889         OutputParams runparams(&params().encoding());
3890         runparams.nice = true;
3891         runparams.flavor = params().getOutputFlavor(format);
3892         runparams.linelen = lyxrc.plaintext_linelen;
3893         // No side effect of file copying and image conversion
3894         runparams.dryrun = true;
3895
3896         // Some macros rely on font encoding
3897         runparams.main_fontenc = params().main_font_encoding();
3898
3899         if (output == CurrentParagraph) {
3900                 runparams.par_begin = par_begin;
3901                 runparams.par_end = par_end;
3902                 if (par_begin + 1 == par_end) {
3903                         os << "% "
3904                            << bformat(_("Preview source code for paragraph %1$d"), par_begin)
3905                            << "\n\n";
3906                 } else {
3907                         os << "% "
3908                            << bformat(_("Preview source code from paragraph %1$s to %2$s"),
3909                                         convert<docstring>(par_begin),
3910                                         convert<docstring>(par_end - 1))
3911                            << "\n\n";
3912                 }
3913                 // output paragraphs
3914                 if (runparams.flavor == OutputParams::LYX) {
3915                         Paragraph const & par = text().paragraphs()[par_begin];
3916                         ostringstream ods;
3917                         depth_type dt = par.getDepth();
3918                         par.write(ods, params(), dt);
3919                         os << from_utf8(ods.str());
3920                 } else if (runparams.flavor == OutputParams::HTML) {
3921                         XHTMLStream xs(os);
3922                         setMathFlavor(runparams);
3923                         xhtmlParagraphs(text(), *this, xs, runparams);
3924                 } else if (runparams.flavor == OutputParams::TEXT) {
3925                         bool dummy = false;
3926                         // FIXME Handles only one paragraph, unlike the others.
3927                         // Probably should have some routine with a signature like them.
3928                         writePlaintextParagraph(*this,
3929                                 text().paragraphs()[par_begin], os, runparams, dummy);
3930                 } else if (params().isDocBook()) {
3931                         docbookParagraphs(text(), *this, os, runparams);
3932                 } else {
3933                         // If we are previewing a paragraph, even if this is the
3934                         // child of some other buffer, let's cut the link here,
3935                         // so that no concurring settings from the master
3936                         // (e.g. branch state) interfere (see #8101).
3937                         if (!master)
3938                                 d->ignore_parent = true;
3939                         // We need to validate the Buffer params' features here
3940                         // in order to know if we should output polyglossia
3941                         // macros (instead of babel macros)
3942                         LaTeXFeatures features(*this, params(), runparams);
3943                         validate(features);
3944                         runparams.use_polyglossia = features.usePolyglossia();
3945                         // latex or literate
3946                         otexstream ots(os);
3947                         // output above
3948                         ots.texrow().newlines(2);
3949                         // the real stuff
3950                         latexParagraphs(*this, text(), ots, runparams);
3951                         texrow = ots.releaseTexRow();
3952
3953                         // Restore the parenthood
3954                         if (!master)
3955                                 d->ignore_parent = false;
3956                 }
3957         } else {
3958                 os << "% ";
3959                 if (output == FullSource)
3960                         os << _("Preview source code");
3961                 else if (output == OnlyPreamble)
3962                         os << _("Preview preamble");
3963                 else if (output == OnlyBody)
3964                         os << _("Preview body");
3965                 os << "\n\n";
3966                 if (runparams.flavor == OutputParams::LYX) {
3967                         ostringstream ods;
3968                         if (output == FullSource)
3969                                 write(ods);
3970                         else if (output == OnlyPreamble)
3971                                 params().writeFile(ods, this);
3972                         else if (output == OnlyBody)
3973                                 text().write(ods);
3974                         os << from_utf8(ods.str());
3975                 } else if (runparams.flavor == OutputParams::HTML) {
3976                         writeLyXHTMLSource(os, runparams, output);
3977                 } else if (runparams.flavor == OutputParams::TEXT) {
3978                         if (output == OnlyPreamble) {
3979                                 os << "% "<< _("Plain text does not have a preamble.");
3980                         } else
3981                                 writePlaintextFile(*this, os, runparams);
3982                 } else if (params().isDocBook()) {
3983                                 writeDocBookSource(os, absFileName(), runparams, output);
3984                 } else {
3985                         // latex or literate
3986                         otexstream ots(os);
3987                         // output above
3988                         ots.texrow().newlines(2);
3989                         if (master)
3990                                 runparams.is_child = true;
3991                         updateBuffer();
3992                         writeLaTeXSource(ots, string(), runparams, output);
3993                         texrow = ots.releaseTexRow();
3994                 }
3995         }
3996         return texrow;
3997 }
3998
3999
4000 ErrorList & Buffer::errorList(string const & type) const
4001 {
4002         return d->errorLists[type];
4003 }
4004
4005
4006 void Buffer::updateTocItem(std::string const & type,
4007         DocIterator const & dit) const
4008 {
4009         if (d->gui_)
4010                 d->gui_->updateTocItem(type, dit);
4011 }
4012
4013
4014 void Buffer::structureChanged() const
4015 {
4016         if (d->gui_)
4017                 d->gui_->structureChanged();
4018 }
4019
4020
4021 void Buffer::errors(string const & err, bool from_master) const
4022 {
4023         if (d->gui_)
4024                 d->gui_->errors(err, from_master);
4025 }
4026
4027
4028 void Buffer::message(docstring const & msg) const
4029 {
4030         if (d->gui_)
4031                 d->gui_->message(msg);
4032 }
4033
4034
4035 void Buffer::setBusy(bool on) const
4036 {
4037         if (d->gui_)
4038                 d->gui_->setBusy(on);
4039 }
4040
4041
4042 void Buffer::updateTitles() const
4043 {
4044         if (d->wa_)
4045                 d->wa_->updateTitles();
4046 }
4047
4048
4049 void Buffer::resetAutosaveTimers() const
4050 {
4051         if (d->gui_)
4052                 d->gui_->resetAutosaveTimers();
4053 }
4054
4055
4056 bool Buffer::hasGuiDelegate() const
4057 {
4058         return d->gui_;
4059 }
4060
4061
4062 void Buffer::setGuiDelegate(frontend::GuiBufferDelegate * gui)
4063 {
4064         d->gui_ = gui;
4065 }
4066
4067
4068
4069 namespace {
4070
4071 class AutoSaveBuffer : public ForkedProcess {
4072 public:
4073         ///
4074         AutoSaveBuffer(Buffer const & buffer, FileName const & fname)
4075                 : buffer_(buffer), fname_(fname) {}
4076         ///
4077         virtual shared_ptr<ForkedProcess> clone() const
4078         {
4079                 return make_shared<AutoSaveBuffer>(*this);
4080         }
4081         ///
4082         int start()
4083         {
4084                 command_ = to_utf8(bformat(_("Auto-saving %1$s"),
4085                                                  from_utf8(fname_.absFileName())));
4086                 return run(DontWait);
4087         }
4088 private:
4089         ///
4090         virtual int generateChild();
4091         ///
4092         Buffer const & buffer_;
4093         FileName fname_;
4094 };
4095
4096
4097 int AutoSaveBuffer::generateChild()
4098 {
4099 #if defined(__APPLE__)
4100         /* FIXME fork() is not usable for autosave on Mac OS X 10.6 (snow leopard)
4101          *   We should use something else like threads.
4102          *
4103          * Since I do not know how to determine at run time what is the OS X
4104          * version, I just disable forking altogether for now (JMarc)
4105          */
4106         pid_t const pid = -1;
4107 #else
4108         // tmp_ret will be located (usually) in /tmp
4109         // will that be a problem?
4110         // Note that this calls ForkedCalls::fork(), so it's
4111         // ok cross-platform.
4112         pid_t const pid = fork();
4113         // If you want to debug the autosave
4114         // you should set pid to -1, and comment out the fork.
4115         if (pid != 0 && pid != -1)
4116                 return pid;
4117 #endif
4118
4119         // pid = -1 signifies that lyx was unable
4120         // to fork. But we will do the save
4121         // anyway.
4122         bool failed = false;
4123         TempFile tempfile("lyxautoXXXXXX.lyx");
4124         tempfile.setAutoRemove(false);
4125         FileName const tmp_ret = tempfile.name();
4126         if (!tmp_ret.empty()) {
4127                 if (!buffer_.writeFile(tmp_ret))
4128                         failed = true;
4129                 else if (!tmp_ret.moveTo(fname_))
4130                         failed = true;
4131         } else
4132                 failed = true;
4133
4134         if (failed) {
4135                 // failed to write/rename tmp_ret so try writing direct
4136                 if (!buffer_.writeFile(fname_)) {
4137                         // It is dangerous to do this in the child,
4138                         // but safe in the parent, so...
4139                         if (pid == -1) // emit message signal.
4140                                 buffer_.message(_("Autosave failed!"));
4141                 }
4142         }
4143
4144         if (pid == 0) // we are the child so...
4145                 _exit(0);
4146
4147         return pid;
4148 }
4149
4150 } // namespace
4151
4152
4153 FileName Buffer::getEmergencyFileName() const
4154 {
4155         return FileName(d->filename.absFileName() + ".emergency");
4156 }
4157
4158
4159 FileName Buffer::getAutosaveFileName() const
4160 {
4161         // if the document is unnamed try to save in the backup dir, else
4162         // in the default document path, and as a last try in the filePath,
4163         // which will most often be the temporary directory
4164         string fpath;
4165         if (isUnnamed())
4166                 fpath = lyxrc.backupdir_path.empty() ? lyxrc.document_path
4167                         : lyxrc.backupdir_path;
4168         if (!isUnnamed() || fpath.empty() || !FileName(fpath).exists())
4169                 fpath = filePath();
4170
4171         string const fname = "#" + d->filename.onlyFileName() + "#";
4172
4173         return makeAbsPath(fname, fpath);
4174 }
4175
4176
4177 void Buffer::removeAutosaveFile() const
4178 {
4179         FileName const f = getAutosaveFileName();
4180         if (f.exists())
4181                 f.removeFile();
4182 }
4183
4184
4185 void Buffer::moveAutosaveFile(FileName const & oldauto) const
4186 {
4187         FileName const newauto = getAutosaveFileName();
4188         oldauto.refresh();
4189         if (newauto != oldauto && oldauto.exists())
4190                 if (!oldauto.moveTo(newauto))
4191                         LYXERR0("Unable to move autosave file `" << oldauto << "'!");
4192 }
4193
4194
4195 bool Buffer::autoSave() const
4196 {
4197         Buffer const * buf = d->cloned_buffer_ ? d->cloned_buffer_ : this;
4198         if (buf->d->bak_clean || hasReadonlyFlag())
4199                 return true;
4200
4201         message(_("Autosaving current document..."));
4202         buf->d->bak_clean = true;
4203
4204         FileName const fname = getAutosaveFileName();
4205         LASSERT(d->cloned_buffer_, return false);
4206
4207         // If this buffer is cloned, we assume that
4208         // we are running in a separate thread already.
4209         TempFile tempfile("lyxautoXXXXXX.lyx");
4210         tempfile.setAutoRemove(false);
4211         FileName const tmp_ret = tempfile.name();
4212         if (!tmp_ret.empty()) {
4213                 writeFile(tmp_ret);
4214                 // assume successful write of tmp_ret
4215                 if (tmp_ret.moveTo(fname))
4216                         return true;
4217         }
4218         // failed to write/rename tmp_ret so try writing direct
4219         return writeFile(fname);
4220 }
4221
4222
4223 void Buffer::setExportStatus(bool e) const
4224 {
4225         d->doing_export = e;
4226         ListOfBuffers clist = getDescendents();
4227         for (auto const & bit : clist)
4228                 bit->d->doing_export = e;
4229 }
4230
4231
4232 bool Buffer::isExporting() const
4233 {
4234         return d->doing_export;
4235 }
4236
4237
4238 Buffer::ExportStatus Buffer::doExport(string const & target, bool put_in_tempdir)
4239         const
4240 {
4241         string result_file;
4242         return doExport(target, put_in_tempdir, result_file);
4243 }
4244
4245 Buffer::ExportStatus Buffer::doExport(string const & target, bool put_in_tempdir,
4246         string & result_file) const
4247 {
4248         bool const update_unincluded =
4249                         params().maintain_unincluded_children
4250                         && !params().getIncludedChildren().empty();
4251
4252         // (1) export with all included children (omit \includeonly)
4253         if (update_unincluded) {
4254                 ExportStatus const status =
4255                         doExport(target, put_in_tempdir, true, result_file);
4256                 if (status != ExportSuccess)
4257                         return status;
4258         }
4259         // (2) export with included children only
4260         return doExport(target, put_in_tempdir, false, result_file);
4261 }
4262
4263
4264 void Buffer::setMathFlavor(OutputParams & op) const
4265 {
4266         switch (params().html_math_output) {
4267         case BufferParams::MathML:
4268                 op.math_flavor = OutputParams::MathAsMathML;
4269                 break;
4270         case BufferParams::HTML:
4271                 op.math_flavor = OutputParams::MathAsHTML;
4272                 break;
4273         case BufferParams::Images:
4274                 op.math_flavor = OutputParams::MathAsImages;
4275                 break;
4276         case BufferParams::LaTeX:
4277                 op.math_flavor = OutputParams::MathAsLaTeX;
4278                 break;
4279         }
4280 }
4281
4282
4283 Buffer::ExportStatus Buffer::doExport(string const & target, bool put_in_tempdir,
4284         bool includeall, string & result_file) const
4285 {
4286         LYXERR(Debug::FILES, "target=" << target);
4287         OutputParams runparams(&params().encoding());
4288         string format = target;
4289         string dest_filename;
4290         size_t pos = target.find(' ');
4291         if (pos != string::npos) {
4292                 dest_filename = target.substr(pos + 1, target.length() - pos - 1);
4293                 format = target.substr(0, pos);
4294                 if (format == "default")
4295                         format = params().getDefaultOutputFormat();
4296                 runparams.export_folder = FileName(dest_filename).onlyPath().realPath();
4297                 FileName(dest_filename).onlyPath().createPath();
4298                 LYXERR(Debug::FILES, "format=" << format << ", dest_filename=" << dest_filename << ", export_folder=" << runparams.export_folder);
4299         }
4300         MarkAsExporting exporting(this);
4301         string backend_format;
4302         runparams.flavor = OutputParams::LATEX;
4303         runparams.linelen = lyxrc.plaintext_linelen;
4304         runparams.includeall = includeall;
4305         vector<string> backs = params().backends();
4306         Converters converters = theConverters();
4307         bool need_nice_file = false;
4308         if (find(backs.begin(), backs.end(), format) == backs.end()) {
4309                 // Get shortest path to format
4310                 converters.buildGraph();
4311                 Graph::EdgePath path;
4312                 for (string const & sit : backs) {
4313                         Graph::EdgePath p = converters.getPath(sit, format);
4314                         if (!p.empty() && (path.empty() || p.size() < path.size())) {
4315                                 backend_format = sit;
4316                                 path = p;
4317                         }
4318                 }
4319                 if (path.empty()) {
4320                         if (!put_in_tempdir) {
4321                                 // Only show this alert if this is an export to a non-temporary
4322                                 // file (not for previewing).
4323                                 Alert::error(_("Couldn't export file"), bformat(
4324                                         _("No information for exporting the format %1$s."),
4325                                         theFormats().prettyName(format)));
4326                         }
4327                         return ExportNoPathToFormat;
4328                 }
4329                 runparams.flavor = converters.getFlavor(path, this);
4330                 runparams.hyperref_driver = converters.getHyperrefDriver(path);
4331                 for (auto const & edge : path)
4332                         if (theConverters().get(edge).nice()) {
4333                                 need_nice_file = true;
4334                                 break;
4335                         }
4336
4337         } else {
4338                 backend_format = format;
4339                 LYXERR(Debug::FILES, "backend_format=" << backend_format);
4340                 // FIXME: Don't hardcode format names here, but use a flag
4341                 if (backend_format == "pdflatex")
4342                         runparams.flavor = OutputParams::PDFLATEX;
4343                 else if (backend_format == "luatex")
4344                         runparams.flavor = OutputParams::LUATEX;
4345                 else if (backend_format == "dviluatex")
4346                         runparams.flavor = OutputParams::DVILUATEX;
4347                 else if (backend_format == "xetex")
4348                         runparams.flavor = OutputParams::XETEX;
4349         }
4350
4351         string filename = latexName(false);
4352         filename = addName(temppath(), filename);
4353         filename = changeExtension(filename,
4354                                    theFormats().extension(backend_format));
4355         LYXERR(Debug::FILES, "filename=" << filename);
4356
4357         // Plain text backend
4358         if (backend_format == "text") {
4359                 runparams.flavor = OutputParams::TEXT;
4360                 try {
4361                         writePlaintextFile(*this, FileName(filename), runparams);
4362                 }
4363                 catch (ConversionException const &) { return ExportCancel; }
4364         }
4365         // HTML backend
4366         else if (backend_format == "xhtml") {
4367                 runparams.flavor = OutputParams::HTML;
4368                 setMathFlavor(runparams);
4369                 if (makeLyXHTMLFile(FileName(filename), runparams) == ExportKilled)
4370                         return ExportKilled;
4371         } else if (backend_format == "lyx")
4372                 writeFile(FileName(filename));
4373         // Docbook backend
4374         else if (params().isDocBook()) {
4375                 runparams.nice = !put_in_tempdir;
4376                 if (makeDocBookFile(FileName(filename), runparams) == ExportKilled)
4377                         return ExportKilled;
4378         }
4379         // LaTeX backend
4380         else if (backend_format == format || need_nice_file) {
4381                 runparams.nice = true;
4382                 ExportStatus const retval =
4383                         makeLaTeXFile(FileName(filename), string(), runparams);
4384                 if (retval == ExportKilled)
4385                         return ExportKilled;
4386                 if (d->cloned_buffer_)
4387                         d->cloned_buffer_->d->errorLists["Export"] = d->errorLists["Export"];
4388                 if (retval != ExportSuccess)
4389                         return retval;
4390         } else if (!lyxrc.tex_allows_spaces
4391                    && contains(filePath(), ' ')) {
4392                 Alert::error(_("File name error"),
4393                         bformat(_("The directory path to the document\n%1$s\n"
4394                             "contains spaces, but your TeX installation does "
4395                             "not allow them. You should save the file to a directory "
4396                                         "whose name does not contain spaces."), from_ascii(filePath())));
4397                 return ExportTexPathHasSpaces;
4398         } else {
4399                 runparams.nice = false;
4400                 ExportStatus const retval =
4401                         makeLaTeXFile(FileName(filename), filePath(), runparams);
4402                 if (retval == ExportKilled)
4403                         return ExportKilled;
4404                 if (d->cloned_buffer_)
4405                         d->cloned_buffer_->d->errorLists["Export"] = d->errorLists["Export"];
4406                 if (retval != ExportSuccess)
4407                         return ExportError;
4408         }
4409
4410         string const error_type = (format == "program")
4411                 ? "Build" : params().bufferFormat();
4412         ErrorList & error_list = d->errorLists[error_type];
4413         string const ext = theFormats().extension(format);
4414         FileName const tmp_result_file(changeExtension(filename, ext));
4415         Converters::RetVal const retval =
4416                 converters.convert(this, FileName(filename), tmp_result_file,
4417                 FileName(absFileName()), backend_format, format, error_list);
4418         if (retval == Converters::KILLED)
4419                 return ExportCancel;
4420         bool success = (retval == Converters::SUCCESS);
4421
4422         // Emit the signal to show the error list or copy it back to the
4423         // cloned Buffer so that it can be emitted afterwards.
4424         if (format != backend_format) {
4425                 if (runparams.silent)
4426                         error_list.clear();
4427                 else if (d->cloned_buffer_)
4428                         d->cloned_buffer_->d->errorLists[error_type] =
4429                                 d->errorLists[error_type];
4430                 else
4431                         errors(error_type);
4432                 // also to the children, in case of master-buffer-view
4433                 ListOfBuffers clist = getDescendents();
4434                 for (auto const & bit : clist) {
4435                         if (runparams.silent)
4436                                 bit->d->errorLists[error_type].clear();
4437                         else if (d->cloned_buffer_) {
4438                                 // Enable reverse search by copying back the
4439                                 // texrow object to the cloned buffer.
4440                                 // FIXME: this is not thread safe.
4441                                 bit->d->cloned_buffer_->d->texrow = bit->d->texrow;
4442                                 bit->d->cloned_buffer_->d->errorLists[error_type] =
4443                                         bit->d->errorLists[error_type];
4444                         } else
4445                                 bit->errors(error_type, true);
4446                 }
4447         }
4448
4449         if (d->cloned_buffer_) {
4450                 // Enable reverse dvi or pdf to work by copying back the texrow
4451                 // object to the cloned buffer.
4452                 // FIXME: There is a possibility of concurrent access to texrow
4453                 // here from the main GUI thread that should be securized.
4454                 d->cloned_buffer_->d->texrow = d->texrow;
4455                 string const err_type = params().bufferFormat();
4456                 d->cloned_buffer_->d->errorLists[error_type] = d->errorLists[err_type];
4457         }
4458
4459
4460         if (put_in_tempdir) {
4461                 result_file = tmp_result_file.absFileName();
4462                 return success ? ExportSuccess : ExportConverterError;
4463         }
4464
4465         if (dest_filename.empty())
4466                 result_file = changeExtension(d->exportFileName().absFileName(), ext);
4467         else
4468                 result_file = dest_filename;
4469         // We need to copy referenced files (e. g. included graphics
4470         // if format == "dvi") to the result dir.
4471         vector<ExportedFile> const files =
4472                 runparams.exportdata->externalFiles(format);
4473         string const dest = runparams.export_folder.empty() ?
4474                 onlyPath(result_file) : runparams.export_folder;
4475         bool use_force = use_gui ? lyxrc.export_overwrite == ALL_FILES
4476                                  : force_overwrite == ALL_FILES;
4477         CopyStatus status = use_force ? FORCE : SUCCESS;
4478
4479         for (ExportedFile const & exp : files) {
4480                 if (status == CANCEL) {
4481                         message(_("Document export cancelled."));
4482                         return ExportCancel;
4483                 }
4484                 string const fmt = theFormats().getFormatFromFile(exp.sourceName);
4485                 string fixedName = exp.exportName;
4486                 if (!runparams.export_folder.empty()) {
4487                         // Relative pathnames starting with ../ will be sanitized
4488                         // if exporting to a different folder
4489                         while (fixedName.substr(0, 3) == "../")
4490                                 fixedName = fixedName.substr(3, fixedName.length() - 3);
4491                 }
4492                 FileName fixedFileName = makeAbsPath(fixedName, dest);
4493                 fixedFileName.onlyPath().createPath();
4494                 status = copyFile(fmt, exp.sourceName,
4495                         fixedFileName,
4496                         exp.exportName, status == FORCE,
4497                         runparams.export_folder.empty());
4498         }
4499
4500
4501         if (tmp_result_file.exists()) {
4502                 // Finally copy the main file
4503                 use_force = use_gui ? lyxrc.export_overwrite != NO_FILES
4504                                     : force_overwrite != NO_FILES;
4505                 if (status == SUCCESS && use_force)
4506                         status = FORCE;
4507                 status = copyFile(format, tmp_result_file,
4508                         FileName(result_file), result_file,
4509                         status == FORCE);
4510                 if (status == CANCEL) {
4511                         message(_("Document export cancelled."));
4512                         return ExportCancel;
4513                 } else {
4514                         message(bformat(_("Document exported as %1$s "
4515                                 "to file `%2$s'"),
4516                                 theFormats().prettyName(format),
4517                                 makeDisplayPath(result_file)));
4518                 }
4519         } else {
4520                 // This must be a dummy converter like fax (bug 1888)
4521                 message(bformat(_("Document exported as %1$s"),
4522                         theFormats().prettyName(format)));
4523         }
4524
4525         return success ? ExportSuccess : ExportConverterError;
4526 }
4527
4528
4529 Buffer::ExportStatus Buffer::preview(string const & format) const
4530 {
4531         bool const update_unincluded =
4532                         params().maintain_unincluded_children
4533                         && !params().getIncludedChildren().empty();
4534         return preview(format, update_unincluded);
4535 }
4536
4537
4538 Buffer::ExportStatus Buffer::preview(string const & format, bool includeall) const
4539 {
4540         MarkAsExporting exporting(this);
4541         string result_file;
4542         // (1) export with all included children (omit \includeonly)
4543         if (includeall) {
4544                 ExportStatus const status = doExport(format, true, true, result_file);
4545                 if (status != ExportSuccess)
4546                         return status;
4547         }
4548         // (2) export with included children only
4549         ExportStatus const status = doExport(format, true, false, result_file);
4550         FileName const previewFile(result_file);
4551
4552         Impl * theimpl = isClone() ? d->cloned_buffer_->d : d;
4553         theimpl->preview_file_ = previewFile;
4554         theimpl->preview_format_ = format;
4555         theimpl->preview_error_ = (status != ExportSuccess);
4556
4557         if (status != ExportSuccess)
4558                 return status;
4559
4560         if (previewFile.exists())
4561                 return theFormats().view(*this, previewFile, format) ?
4562                         PreviewSuccess : PreviewError;
4563
4564         // Successful export but no output file?
4565         // Probably a bug in error detection.
4566         LATTEST(status != ExportSuccess);
4567         return status;
4568 }
4569
4570
4571 Buffer::ReadStatus Buffer::extractFromVC()
4572 {
4573         bool const found = LyXVC::file_not_found_hook(d->filename);
4574         if (!found)
4575                 return ReadFileNotFound;
4576         if (!d->filename.isReadableFile())
4577                 return ReadVCError;
4578         return ReadSuccess;
4579 }
4580
4581
4582 Buffer::ReadStatus Buffer::loadEmergency()
4583 {
4584         FileName const emergencyFile = getEmergencyFileName();
4585         if (!emergencyFile.exists()
4586                   || emergencyFile.lastModified() <= d->filename.lastModified())
4587                 return ReadFileNotFound;
4588
4589         docstring const file = makeDisplayPath(d->filename.absFileName(), 20);
4590         docstring const text = bformat(_("An emergency save of the document "
4591                 "%1$s exists.\n\nRecover emergency save?"), file);
4592
4593         int const load_emerg = Alert::prompt(_("Load emergency save?"), text,
4594                 0, 2, _("&Recover"), _("&Load Original"), _("&Cancel"));
4595
4596         switch (load_emerg)
4597         {
4598         case 0: {
4599                 docstring str;
4600                 ReadStatus const ret_llf = loadThisLyXFile(emergencyFile);
4601                 bool const success = (ret_llf == ReadSuccess);
4602                 if (success) {
4603                         if (hasReadonlyFlag()) {
4604                                 Alert::warning(_("File is read-only"),
4605                                         bformat(_("An emergency file is successfully loaded, "
4606                                         "but the original file %1$s is marked read-only. "
4607                                         "Please make sure to save the document as a different "
4608                                         "file."), from_utf8(d->filename.absFileName())));
4609                         }
4610                         markDirty();
4611                         lyxvc().file_found_hook(d->filename);
4612                         str = _("Document was successfully recovered.");
4613                 } else
4614                         str = _("Document was NOT successfully recovered.");
4615                 str += "\n\n" + bformat(_("Remove emergency file now?\n(%1$s)"),
4616                         makeDisplayPath(emergencyFile.absFileName()));
4617
4618                 int const del_emerg =
4619                         Alert::prompt(_("Delete emergency file?"), str, 1, 1,
4620                                 _("&Remove"), _("&Keep"));
4621                 if (del_emerg == 0) {
4622                         emergencyFile.removeFile();
4623                         if (success)
4624                                 Alert::warning(_("Emergency file deleted"),
4625                                         _("Do not forget to save your file now!"), true);
4626                         }
4627                 return success ? ReadSuccess : ReadEmergencyFailure;
4628         }
4629         case 1: {
4630                 int const del_emerg =
4631                         Alert::prompt(_("Delete emergency file?"),
4632                                 _("Remove emergency file now?"), 1, 1,
4633                                 _("&Remove"), _("&Keep"));
4634                 if (del_emerg == 0)
4635                         emergencyFile.removeFile();
4636                 return ReadOriginal;
4637         }
4638
4639         default:
4640                 break;
4641         }
4642         return ReadCancel;
4643 }
4644
4645
4646 Buffer::ReadStatus Buffer::loadAutosave()
4647 {
4648         // Now check if autosave file is newer.
4649         FileName const autosaveFile = getAutosaveFileName();
4650         if (!autosaveFile.exists()
4651                   || autosaveFile.lastModified() <= d->filename.lastModified())
4652                 return ReadFileNotFound;
4653
4654         docstring const file = makeDisplayPath(d->filename.absFileName(), 20);
4655         docstring const text = bformat(_("The backup of the document %1$s "
4656                 "is newer.\n\nLoad the backup instead?"), file);
4657         int const ret = Alert::prompt(_("Load backup?"), text, 0, 2,
4658                 _("&Load backup"), _("Load &original"), _("&Cancel"));
4659
4660         switch (ret)
4661         {
4662         case 0: {
4663                 ReadStatus const ret_llf = loadThisLyXFile(autosaveFile);
4664                 // the file is not saved if we load the autosave file.
4665                 if (ret_llf == ReadSuccess) {
4666                         if (hasReadonlyFlag()) {
4667                                 Alert::warning(_("File is read-only"),
4668                                         bformat(_("A backup file is successfully loaded, "
4669                                         "but the original file %1$s is marked read-only. "
4670                                         "Please make sure to save the document as a "
4671                                         "different file."),
4672                                         from_utf8(d->filename.absFileName())));
4673                         }
4674                         markDirty();
4675                         lyxvc().file_found_hook(d->filename);
4676                         return ReadSuccess;
4677                 }
4678                 return ReadAutosaveFailure;
4679         }
4680         case 1:
4681                 // Here we delete the autosave
4682                 autosaveFile.removeFile();
4683                 return ReadOriginal;
4684         default:
4685                 break;
4686         }
4687         return ReadCancel;
4688 }
4689
4690
4691 Buffer::ReadStatus Buffer::loadLyXFile()
4692 {
4693         if (!d->filename.isReadableFile()) {
4694                 ReadStatus const ret_rvc = extractFromVC();
4695                 if (ret_rvc != ReadSuccess)
4696                         return ret_rvc;
4697         }
4698
4699         ReadStatus const ret_re = loadEmergency();
4700         if (ret_re == ReadSuccess || ret_re == ReadCancel)
4701                 return ret_re;
4702
4703         ReadStatus const ret_ra = loadAutosave();
4704         if (ret_ra == ReadSuccess || ret_ra == ReadCancel)
4705                 return ret_ra;
4706
4707         return loadThisLyXFile(d->filename);
4708 }
4709
4710
4711 Buffer::ReadStatus Buffer::loadThisLyXFile(FileName const & fn)
4712 {
4713         return readFile(fn);
4714 }
4715
4716
4717 void Buffer::bufferErrors(TeXErrors const & terr, ErrorList & errorList) const
4718 {
4719         for (auto const & err : terr) {
4720                 TexRow::TextEntry start = TexRow::text_none, end = TexRow::text_none;
4721                 int errorRow = err.error_in_line;
4722                 Buffer const * buf = 0;
4723                 Impl const * p = d;
4724                 if (err.child_name.empty())
4725                         tie(start, end) = p->texrow.getEntriesFromRow(errorRow);
4726                 else {
4727                         // The error occurred in a child
4728                         for (Buffer const * child : getDescendents()) {
4729                                 string const child_name =
4730                                         DocFileName(changeExtension(child->absFileName(), "tex")).
4731                                         mangledFileName();
4732                                 if (err.child_name != child_name)
4733                                         continue;
4734                                 tie(start, end) = child->d->texrow.getEntriesFromRow(errorRow);
4735                                 if (!TexRow::isNone(start)) {
4736                                         buf = d->cloned_buffer_
4737                                                 ? child->d->cloned_buffer_->d->owner_
4738                                                 : child->d->owner_;
4739                                         p = child->d;
4740                                         break;
4741                                 }
4742                         }
4743                 }
4744                 errorList.push_back(ErrorItem(err.error_desc, err.error_text,
4745                                               start, end, buf));
4746         }
4747 }
4748
4749
4750 void Buffer::updateBuffer(UpdateScope scope, UpdateType utype) const
4751 {
4752         LBUFERR(!text().paragraphs().empty());
4753
4754         // Use the master text class also for child documents
4755         Buffer const * const master = masterBuffer();
4756         DocumentClass const & textclass = master->params().documentClass();
4757
4758         FileNamePairList old_bibfiles;
4759         // Do this only if we are the top-level Buffer. We also need to account
4760         // for the case of a previewed child with ignored parent here.
4761         if (master == this && !d->ignore_parent) {
4762                 textclass.counters().reset(from_ascii("bibitem"));
4763                 reloadBibInfoCache();
4764                 // we will re-read this cache as we go through, but we need
4765                 // to know whether it's changed to know whether we need to
4766                 // update the bibinfo cache.
4767                 old_bibfiles = d->bibfiles_cache_;
4768                 d->bibfiles_cache_.clear();
4769         }
4770
4771         // keep the buffers to be children in this set. If the call from the
4772         // master comes back we can see which of them were actually seen (i.e.
4773         // via an InsetInclude). The remaining ones in the set need still be updated.
4774         static std::set<Buffer const *> bufToUpdate;
4775         if (scope == UpdateMaster) {
4776                 // If this is a child document start with the master
4777                 if (master != this) {
4778                         bufToUpdate.insert(this);
4779                         master->updateBuffer(UpdateMaster, utype);
4780                         // If the master buffer has no gui associated with it, then the TocModel is
4781                         // not updated during the updateBuffer call and TocModel::toc_ is invalid
4782                         // (bug 5699). The same happens if the master buffer is open in a different
4783                         // window. This test catches both possibilities.
4784                         // See: https://marc.info/?l=lyx-devel&m=138590578911716&w=2
4785                         // There remains a problem here: If there is another child open in yet a third
4786                         // window, that TOC is not updated. So some more general solution is needed at
4787                         // some point.
4788                         if (master->d->gui_ != d->gui_)
4789                                 structureChanged();
4790
4791                         // was buf referenced from the master (i.e. not in bufToUpdate anymore)?
4792                         if (bufToUpdate.find(this) == bufToUpdate.end())
4793                                 return;
4794                 }
4795
4796                 // start over the counters in the master
4797                 textclass.counters().reset();
4798         }
4799
4800         // update will be done below for this buffer
4801         bufToUpdate.erase(this);
4802
4803         // update all caches
4804         clearReferenceCache();
4805         updateMacros();
4806         setChangesPresent(false);
4807
4808         Buffer & cbuf = const_cast<Buffer &>(*this);
4809
4810         // do the real work
4811         ParIterator parit = cbuf.par_iterator_begin();
4812         updateBuffer(parit, utype);
4813
4814         // If this document has siblings, then update the TocBackend later. The
4815         // reason is to ensure that later siblings are up to date when e.g. the
4816         // broken or not status of references is computed. The update is called
4817         // in InsetInclude::addToToc.
4818         if (master != this)
4819                 return;
4820
4821         // if the bibfiles changed, the cache of bibinfo is invalid
4822         FileNamePairList new_bibfiles = d->bibfiles_cache_;
4823         // this is a trick to determine whether the two vectors have
4824         // the same elements.
4825         sort(new_bibfiles.begin(), new_bibfiles.end());
4826         sort(old_bibfiles.begin(), old_bibfiles.end());
4827         if (old_bibfiles != new_bibfiles) {
4828                 LYXERR(Debug::FILES, "Reloading bibinfo cache.");
4829                 invalidateBibinfoCache();
4830                 reloadBibInfoCache();
4831                 // We relied upon the bibinfo cache when recalculating labels. But that
4832                 // cache was invalid, although we didn't find that out until now. So we
4833                 // have to do it all again.
4834                 // That said, the only thing we really need to do is update the citation
4835                 // labels. Nothing else will have changed. So we could create a new
4836                 // UpdateType that would signal that fact, if we needed to do so.
4837                 parit = cbuf.par_iterator_begin();
4838                 // we will be re-doing the counters and references and such.
4839                 textclass.counters().reset();
4840                 clearReferenceCache();
4841                 // we should not need to do this again?
4842                 // updateMacros();
4843                 setChangesPresent(false);
4844                 updateBuffer(parit, utype);
4845                 // this will already have been done by reloadBibInfoCache();
4846                 // d->bibinfo_cache_valid_ = true;
4847         }
4848         else {
4849                 LYXERR(Debug::FILES, "Bibfiles unchanged.");
4850                 // this is also set to true on the other path, by reloadBibInfoCache.
4851                 d->bibinfo_cache_valid_ = true;
4852         }
4853         d->cite_labels_valid_ = true;
4854         /// FIXME: Perf
4855         cbuf.tocBackend().update(true, utype);
4856         if (scope == UpdateMaster)
4857                 cbuf.structureChanged();
4858 }
4859
4860
4861 static depth_type getDepth(DocIterator const & it)
4862 {
4863         depth_type depth = 0;
4864         for (size_t i = 0 ; i < it.depth() ; ++i)
4865                 if (!it[i].inset().inMathed())
4866                         depth += it[i].paragraph().getDepth() + 1;
4867         // remove 1 since the outer inset does not count
4868         // we should have at least one non-math inset, so
4869         // depth should nevery be 0. but maybe it is worth
4870         // marking this, just in case.
4871         LATTEST(depth > 0);
4872         // coverity[INTEGER_OVERFLOW]
4873         return depth - 1;
4874 }
4875
4876 static depth_type getItemDepth(ParIterator const & it)
4877 {
4878         Paragraph const & par = *it;
4879         LabelType const labeltype = par.layout().labeltype;
4880
4881         if (labeltype != LABEL_ENUMERATE && labeltype != LABEL_ITEMIZE)
4882                 return 0;
4883
4884         // this will hold the lowest depth encountered up to now.
4885         depth_type min_depth = getDepth(it);
4886         ParIterator prev_it = it;
4887         while (true) {
4888                 if (prev_it.pit())
4889                         --prev_it.top().pit();
4890                 else {
4891                         // start of nested inset: go to outer par
4892                         prev_it.pop_back();
4893                         if (prev_it.empty()) {
4894                                 // start of document: nothing to do
4895                                 return 0;
4896                         }
4897                 }
4898
4899                 // We search for the first paragraph with same label
4900                 // that is not more deeply nested.
4901                 Paragraph & prev_par = *prev_it;
4902                 depth_type const prev_depth = getDepth(prev_it);
4903                 if (labeltype == prev_par.layout().labeltype) {
4904                         if (prev_depth < min_depth)
4905                                 return prev_par.itemdepth + 1;
4906                         if (prev_depth == min_depth)
4907                                 return prev_par.itemdepth;
4908                 }
4909                 min_depth = min(min_depth, prev_depth);
4910                 // small optimization: if we are at depth 0, we won't
4911                 // find anything else
4912                 if (prev_depth == 0)
4913                         return 0;
4914         }
4915 }
4916
4917
4918 static bool needEnumCounterReset(ParIterator const & it)
4919 {
4920         Paragraph const & par = *it;
4921         LASSERT(par.layout().labeltype == LABEL_ENUMERATE, return false);
4922         depth_type const cur_depth = par.getDepth();
4923         ParIterator prev_it = it;
4924         while (prev_it.pit()) {
4925                 --prev_it.top().pit();
4926                 Paragraph const & prev_par = *prev_it;
4927                 if (prev_par.getDepth() <= cur_depth)
4928                         return prev_par.layout().name() != par.layout().name();
4929         }
4930         // start of nested inset: reset
4931         return true;
4932 }
4933
4934
4935 // set the label of a paragraph. This includes the counters.
4936 void Buffer::Impl::setLabel(ParIterator & it, UpdateType utype) const
4937 {
4938         BufferParams const & bp = owner_->masterBuffer()->params();
4939         DocumentClass const & textclass = bp.documentClass();
4940         Paragraph & par = it.paragraph();
4941         Layout const & layout = par.layout();
4942         Counters & counters = textclass.counters();
4943
4944         if (par.params().startOfAppendix()) {
4945                 // We want to reset the counter corresponding to toplevel sectioning
4946                 Layout const & lay = textclass.getTOCLayout();
4947                 docstring const cnt = lay.counter;
4948                 if (!cnt.empty())
4949                         counters.reset(cnt);
4950                 counters.appendix(true);
4951         }
4952         par.params().appendix(counters.appendix());
4953
4954         // Compute the item depth of the paragraph
4955         par.itemdepth = getItemDepth(it);
4956
4957         if (layout.margintype == MARGIN_MANUAL) {
4958                 if (par.params().labelWidthString().empty())
4959                         par.params().labelWidthString(par.expandLabel(layout, bp));
4960         } else if (layout.latextype == LATEX_BIB_ENVIRONMENT) {
4961                 // we do not need to do anything here, since the empty case is
4962                 // handled during export.
4963         } else {
4964                 par.params().labelWidthString(docstring());
4965         }
4966
4967         switch(layout.labeltype) {
4968         case LABEL_ITEMIZE: {
4969                 // At some point of time we should do something more
4970                 // clever here, like:
4971                 //   par.params().labelString(
4972                 //    bp.user_defined_bullet(par.itemdepth).getText());
4973                 // for now, use a simple hardcoded label
4974                 docstring itemlabel;
4975                 switch (par.itemdepth) {
4976                 case 0:
4977                         itemlabel = char_type(0x2022);
4978                         break;
4979                 case 1:
4980                         itemlabel = char_type(0x2013);
4981                         break;
4982                 case 2:
4983                         itemlabel = char_type(0x2217);
4984                         break;
4985                 case 3:
4986                         itemlabel = char_type(0x2219); // or 0x00b7
4987                         break;
4988                 }
4989                 par.params().labelString(itemlabel);
4990                 break;
4991         }
4992
4993         case LABEL_ENUMERATE: {
4994                 docstring enumcounter = layout.counter.empty() ? from_ascii("enum") : layout.counter;
4995
4996                 switch (par.itemdepth) {
4997                 case 2:
4998                         enumcounter += 'i';
4999                         // fall through
5000                 case 1:
5001                         enumcounter += 'i';
5002                         // fall through
5003                 case 0:
5004                         enumcounter += 'i';
5005                         break;
5006                 case 3:
5007                         enumcounter += "iv";
5008                         break;
5009                 default:
5010                         // not a valid enumdepth...
5011                         break;
5012                 }
5013
5014                 if (needEnumCounterReset(it)) {
5015                         // Increase the master counter?
5016                         if (layout.stepmastercounter)
5017                                 counters.stepMaster(enumcounter, utype);
5018                         // Maybe we have to reset the enumeration counter.
5019                         if (!layout.resumecounter)
5020                                 counters.reset(enumcounter);
5021                 }
5022                 counters.step(enumcounter, utype);
5023
5024                 string const & lang = par.getParLanguage(bp)->code();
5025                 par.params().labelString(counters.theCounter(enumcounter, lang));
5026
5027                 break;
5028         }
5029
5030         case LABEL_SENSITIVE: {
5031                 string const & type = counters.current_float();
5032                 docstring full_label;
5033                 if (type.empty())
5034                         full_label = owner_->B_("Senseless!!! ");
5035                 else {
5036                         docstring name = owner_->B_(textclass.floats().getType(type).name());
5037                         if (counters.hasCounter(from_utf8(type))) {
5038                                 string const & lang = par.getParLanguage(bp)->code();
5039                                 counters.step(from_utf8(type), utype);
5040                                 full_label = bformat(from_ascii("%1$s %2$s:"),
5041                                                      name,
5042                                                      counters.theCounter(from_utf8(type), lang));
5043                         } else
5044                                 full_label = bformat(from_ascii("%1$s #:"), name);
5045                 }
5046                 par.params().labelString(full_label);
5047                 break;
5048         }
5049
5050         case LABEL_NO_LABEL:
5051                 par.params().labelString(docstring());
5052                 break;
5053
5054         case LABEL_ABOVE:
5055         case LABEL_CENTERED:
5056         case LABEL_STATIC: {
5057                 docstring const & lcounter = layout.counter;
5058                 if (!lcounter.empty()) {
5059                         if (layout.toclevel <= bp.secnumdepth
5060                                                 && (layout.latextype != LATEX_ENVIRONMENT
5061                                         || it.text()->isFirstInSequence(it.pit()))) {
5062                                 if (counters.hasCounter(lcounter))
5063                                         counters.step(lcounter, utype);
5064                                 par.params().labelString(par.expandLabel(layout, bp));
5065                         } else
5066                                 par.params().labelString(docstring());
5067                 } else
5068                         par.params().labelString(par.expandLabel(layout, bp));
5069                 break;
5070         }
5071
5072         case LABEL_MANUAL:
5073         case LABEL_BIBLIO:
5074                 par.params().labelString(par.expandLabel(layout, bp));
5075         }
5076 }
5077
5078
5079 void Buffer::updateBuffer(ParIterator & parit, UpdateType utype) const
5080 {
5081         // LASSERT: Is it safe to continue here, or should we just return?
5082         LASSERT(parit.pit() == 0, /**/);
5083
5084         // Set the position of the text in the buffer to be able
5085         // to resolve macros in it.
5086         parit.text()->setMacrocontextPosition(parit);
5087
5088         depth_type maxdepth = 0;
5089         pit_type const lastpit = parit.lastpit();
5090         for ( ; parit.pit() <= lastpit ; ++parit.pit()) {
5091                 // reduce depth if necessary
5092                 if (parit->params().depth() > maxdepth) {
5093                         /** FIXME: this function is const, but
5094                          * nevertheless it modifies the buffer. To be
5095                          * cleaner, one should modify the buffer in
5096                          * another function, which is actually
5097                          * non-const. This would however be costly in
5098                          * terms of code duplication.
5099                          */
5100                         CursorData(parit).recordUndo();
5101                         parit->params().depth(maxdepth);
5102                 }
5103                 maxdepth = parit->getMaxDepthAfter();
5104
5105                 if (utype == OutputUpdate) {
5106                         // track the active counters
5107                         // we have to do this for the master buffer, since the local
5108                         // buffer isn't tracking anything.
5109                         masterBuffer()->params().documentClass().counters().
5110                                         setActiveLayout(parit->layout());
5111                 }
5112
5113                 // set the counter for this paragraph
5114                 d->setLabel(parit, utype);
5115
5116                 // update change-tracking flag
5117                 parit->addChangesToBuffer(*this);
5118
5119                 // now the insets
5120                 for (auto const & insit : parit->insetList()) {
5121                         parit.pos() = insit.pos;
5122                         insit.inset->updateBuffer(parit, utype);
5123                 }
5124         }
5125 }
5126
5127
5128 int Buffer::spellCheck(DocIterator & from, DocIterator & to,
5129         WordLangTuple & word_lang, docstring_list & suggestions) const
5130 {
5131         int progress = 0;
5132         WordLangTuple wl;
5133         suggestions.clear();
5134         word_lang = WordLangTuple();
5135         bool const to_end = to.empty();
5136         DocIterator const end = to_end ? doc_iterator_end(this) : to;
5137         // OK, we start from here.
5138         for (; from != end; from.forwardPos()) {
5139                 // This skips all insets with spell check disabled.
5140                 while (!from.allowSpellCheck()) {
5141                         from.pop_back();
5142                         from.pos()++;
5143                 }
5144                 // If from is at the end of the document (which is possible
5145                 // when "from" was changed above) LyX will crash later otherwise.
5146                 if (from.atEnd() || (!to_end && from >= end))
5147                         break;
5148                 to = from;
5149                 from.paragraph().spellCheck();
5150                 SpellChecker::Result res = from.paragraph().spellCheck(from.pos(), to.pos(), wl, suggestions);
5151                 if (SpellChecker::misspelled(res)) {
5152                         word_lang = wl;
5153                         break;
5154                 }
5155                 // Do not increase progress when from == to, otherwise the word
5156                 // count will be wrong.
5157                 if (from != to) {
5158                         from = to;
5159                         ++progress;
5160                 }
5161         }
5162         return progress;
5163 }
5164
5165
5166 void Buffer::Impl::updateStatistics(DocIterator & from, DocIterator & to, bool skipNoOutput)
5167 {
5168         bool inword = false;
5169         word_count_ = 0;
5170         char_count_ = 0;
5171         blank_count_ = 0;
5172
5173         for (DocIterator dit = from ; dit != to && !dit.atEnd(); ) {
5174                 if (!dit.inTexted()) {
5175                         dit.forwardPos();
5176                         continue;
5177                 }
5178
5179                 Paragraph const & par = dit.paragraph();
5180                 pos_type const pos = dit.pos();
5181
5182                 // Copied and adapted from isWordSeparator() in Paragraph
5183                 if (pos == dit.lastpos()) {
5184                         inword = false;
5185                 } else {
5186                         Inset const * ins = par.getInset(pos);
5187                         if (ins && skipNoOutput && !ins->producesOutput()) {
5188                                 // skip this inset
5189                                 ++dit.top().pos();
5190                                 // stop if end of range was skipped
5191                                 if (!to.atEnd() && dit >= to)
5192                                         break;
5193                                 continue;
5194                         } else if (!par.isDeleted(pos)) {
5195                                 if (par.isWordSeparator(pos))
5196                                         inword = false;
5197                                 else if (!inword) {
5198                                         ++word_count_;
5199                                         inword = true;
5200                                 }
5201                                 if (ins && ins->isLetter())
5202                                         ++char_count_;
5203                                 else if (ins && ins->isSpace())
5204                                         ++blank_count_;
5205                                 else {
5206                                         char_type const c = par.getChar(pos);
5207                                         if (isPrintableNonspace(c))
5208                                                 ++char_count_;
5209                                         else if (isSpace(c))
5210                                                 ++blank_count_;
5211                                 }
5212                         }
5213                 }
5214                 dit.forwardPos();
5215         }
5216 }
5217
5218
5219 void Buffer::updateStatistics(DocIterator & from, DocIterator & to, bool skipNoOutput) const
5220 {
5221         d->updateStatistics(from, to, skipNoOutput);
5222 }
5223
5224
5225 int Buffer::wordCount() const
5226 {
5227         return d->wordCount();
5228 }
5229
5230
5231 int Buffer::charCount(bool with_blanks) const
5232 {
5233         return d->charCount(with_blanks);
5234 }
5235
5236
5237 Buffer::ReadStatus Buffer::reload()
5238 {
5239         setBusy(true);
5240         // c.f. bug https://www.lyx.org/trac/ticket/6587
5241         removeAutosaveFile();
5242         // e.g., read-only status could have changed due to version control
5243         d->filename.refresh();
5244         docstring const disp_fn = makeDisplayPath(d->filename.absFileName());
5245
5246         // clear parent. this will get reset if need be.
5247         d->setParent(0);
5248         ReadStatus const status = loadLyXFile();
5249         if (status == ReadSuccess) {
5250                 updateBuffer();
5251                 changed(true);
5252                 updateTitles();
5253                 markClean();
5254                 message(bformat(_("Document %1$s reloaded."), disp_fn));
5255                 d->undo_.clear();
5256         } else {
5257                 message(bformat(_("Could not reload document %1$s."), disp_fn));
5258         }
5259         setBusy(false);
5260         removePreviews();
5261         updatePreviews();
5262         errors("Parse");
5263         return status;
5264 }
5265
5266
5267 bool Buffer::saveAs(FileName const & fn)
5268 {
5269         FileName const old_name = fileName();
5270         FileName const old_auto = getAutosaveFileName();
5271         bool const old_unnamed = isUnnamed();
5272         bool success = true;
5273         d->old_position = filePath();
5274
5275         setFileName(fn);
5276         markDirty();
5277         setUnnamed(false);
5278
5279         if (save()) {
5280                 // bring the autosave file with us, just in case.
5281                 moveAutosaveFile(old_auto);
5282                 // validate version control data and
5283                 // correct buffer title
5284                 lyxvc().file_found_hook(fileName());
5285                 updateTitles();
5286                 // the file has now been saved to the new location.
5287                 // we need to check that the locations of child buffers
5288                 // are still valid.
5289                 checkChildBuffers();
5290                 checkMasterBuffer();
5291         } else {
5292                 // save failed
5293                 // reset the old filename and unnamed state
5294                 setFileName(old_name);
5295                 setUnnamed(old_unnamed);
5296                 success = false;
5297         }
5298
5299         d->old_position.clear();
5300         return success;
5301 }
5302
5303
5304 void Buffer::checkChildBuffers()
5305 {
5306         for (auto const & bit : d->children_positions) {
5307                 DocIterator dit = bit.second;
5308                 Buffer * cbuf = const_cast<Buffer *>(bit.first);
5309                 if (!cbuf || !theBufferList().isLoaded(cbuf))
5310                         continue;
5311                 Inset * inset = dit.nextInset();
5312                 LASSERT(inset && inset->lyxCode() == INCLUDE_CODE, continue);
5313                 InsetInclude * inset_inc = static_cast<InsetInclude *>(inset);
5314                 docstring const & incfile = inset_inc->getParam("filename");
5315                 string oldloc = cbuf->absFileName();
5316                 string newloc = makeAbsPath(to_utf8(incfile),
5317                                 onlyPath(absFileName())).absFileName();
5318                 if (oldloc == newloc)
5319                         continue;
5320                 // the location of the child file is incorrect.
5321                 cbuf->setParent(0);
5322                 inset_inc->setChildBuffer(0);
5323         }
5324         // invalidate cache of children
5325         d->children_positions.clear();
5326         d->position_to_children.clear();
5327 }
5328
5329
5330 // If a child has been saved under a different name/path, it might have been
5331 // orphaned. Therefore the master needs to be reset (bug 8161).
5332 void Buffer::checkMasterBuffer()
5333 {
5334         Buffer const * const master = masterBuffer();
5335         if (master == this)
5336                 return;
5337
5338         // necessary to re-register the child (bug 5873)
5339         // FIXME: clean up updateMacros (here, only
5340         // child registering is needed).
5341         master->updateMacros();
5342         // (re)set master as master buffer, but only
5343         // if we are a real child
5344         if (master->isChild(this))
5345                 setParent(master);
5346         else
5347                 setParent(0);
5348 }
5349
5350
5351 string Buffer::includedFilePath(string const & name, string const & ext) const
5352 {
5353         if (d->old_position.empty() ||
5354             equivalent(FileName(d->old_position), FileName(filePath())))
5355                 return name;
5356
5357         bool isabsolute = FileName::isAbsolute(name);
5358         // both old_position and filePath() end with a path separator
5359         string absname = isabsolute ? name : d->old_position + name;
5360
5361         // if old_position is set to origin, we need to do the equivalent of
5362         // getReferencedFileName() (see readDocument())
5363         if (!isabsolute && d->old_position == params().origin) {
5364                 FileName const test(addExtension(filePath() + name, ext));
5365                 if (test.exists())
5366                         absname = filePath() + name;
5367         }
5368
5369         if (!FileName(addExtension(absname, ext)).exists())
5370                 return name;
5371
5372         if (isabsolute)
5373                 return to_utf8(makeRelPath(from_utf8(name), from_utf8(filePath())));
5374
5375         return to_utf8(makeRelPath(from_utf8(FileName(absname).realPath()),
5376                                    from_utf8(filePath())));
5377 }
5378
5379
5380 void Buffer::setChangesPresent(bool b) const
5381 {
5382         d->tracked_changes_present_ = b;
5383 }
5384
5385
5386 bool Buffer::areChangesPresent() const
5387 {
5388         return d->tracked_changes_present_;
5389 }
5390
5391
5392 void Buffer::updateChangesPresent() const
5393 {
5394         LYXERR(Debug::CHANGES, "Buffer::updateChangesPresent");
5395         setChangesPresent(false);
5396         ParConstIterator it = par_iterator_begin();
5397         ParConstIterator const end = par_iterator_end();
5398         for (; !areChangesPresent() && it != end; ++it)
5399                 it->addChangesToBuffer(*this);
5400 }
5401
5402
5403 void Buffer::Impl::refreshFileMonitor()
5404 {
5405         if (file_monitor_ && file_monitor_->filename() == filename.absFileName()) {
5406                 file_monitor_->refresh();
5407                 return;
5408         }
5409
5410         // The previous file monitor is invalid
5411         // This also destroys the previous file monitor and all its connections
5412         file_monitor_ = FileSystemWatcher::monitor(filename);
5413         // file_monitor_ will be destroyed with *this, so it is not going to call a
5414         // destroyed object method.
5415         file_monitor_->connect([this](bool exists) {
5416                         fileExternallyModified(exists);
5417                 });
5418 }
5419
5420
5421 void Buffer::Impl::fileExternallyModified(bool const exists)
5422 {
5423         // ignore notifications after our own saving operations
5424         if (checksum_ == filename.checksum()) {
5425                 LYXERR(Debug::FILES, "External modification but "
5426                        "checksum unchanged: " << filename);
5427                 return;
5428         }
5429         // If the file has been deleted, only mark the file as dirty since it is
5430         // pointless to prompt for reloading. If later a file is moved into this
5431         // location, then the externally modified warning will appear then.
5432         if (exists)
5433                         externally_modified_ = true;
5434         // Update external modification notification.
5435         // Dirty buffers must be visible at all times.
5436         if (wa_ && wa_->unhide(owner_))
5437                 wa_->updateTitles();
5438         else
5439                 // Unable to unhide the buffer (e.g. no GUI or not current View)
5440                 lyx_clean = true;
5441 }
5442
5443
5444 bool Buffer::notifiesExternalModification() const
5445 {
5446         return d->externally_modified_;
5447 }
5448
5449
5450 void Buffer::clearExternalModification() const
5451 {
5452         d->externally_modified_ = false;
5453         if (d->wa_)
5454                 d->wa_->updateTitles();
5455 }
5456
5457
5458 } // namespace lyx