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