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 "DocIterator.h"
  28 #include "EmbeddedFiles.h"
  29 #include "Encoding.h"
  30 #include "ErrorList.h"
  31 #include "Exporter.h"
  32 #include "Format.h"
  33 #include "FuncRequest.h"
  34 #include "InsetIterator.h"
  35 #include "InsetList.h"
  36 #include "Language.h"
  37 #include "LaTeXFeatures.h"
  38 #include "LaTeX.h"
  39 #include "Layout.h"
  40 #include "Lexer.h"
  41 #include "LyXAction.h"
  42 #include "LyX.h"
  43 #include "LyXRC.h"
  44 #include "LyXVC.h"
  45 #include "output_docbook.h"
  46 #include "output.h"
  47 #include "output_latex.h"
  48 #include "output_plaintext.h"
  49 #include "paragraph_funcs.h"
  50 #include "Paragraph.h"
  51 #include "ParagraphParameters.h"
  52 #include "ParIterator.h"
  53 #include "PDFOptions.h"
  54 #include "Session.h"
  55 #include "sgml.h"
  56 #include "TexRow.h"
  57 #include "TexStream.h"
  58 #include "Text.h"
  59 #include "TextClass.h"
  60 #include "TocBackend.h"
  61 #include "Undo.h"
  62 #include "VCBackend.h"
  63 #include "version.h"
  64 #include "WordList.h"
  65
  66 #include "insets/InsetBibitem.h"
  67 #include "insets/InsetBibtex.h"
  68 #include "insets/InsetInclude.h"
  69 #include "insets/InsetText.h"
  70
  71 #include "mathed/MacroTable.h"
  72 #include "mathed/MathMacroTemplate.h"
  73 #include "mathed/MathSupport.h"
  74
  75 #include "frontends/alert.h"
  76 #include "frontends/Delegates.h"
  77 #include "frontends/WorkAreaManager.h"
  78
  79 #include "graphics/Previews.h"
  80
  81 #include "support/convert.h"
  82 #include "support/debug.h"
  83 #include "support/ExceptionMessage.h"
  84 #include "support/FileName.h"
  85 #include "support/FileNameList.h"
  86 #include "support/filetools.h"
  87 #include "support/ForkedCalls.h"
  88 #include "support/gettext.h"
  89 #include "support/gzstream.h"
  90 #include "support/lstrings.h"
  91 #include "support/lyxalgo.h"
  92 #include "support/os.h"
  93 #include "support/Package.h"
  94 #include "support/Path.h"
  95 #include "support/textutils.h"
  96 #include "support/types.h"
  97 #include "support/FileZipListDir.h"
  98
  99 #include <boost/bind.hpp>
 100 #include <boost/shared_ptr.hpp>
 101
 102 #include <algorithm>
 103 #include <fstream>
 104 #include <iomanip>
 105 #include <map>
 106 #include <sstream>
 107 #include <stack>
 108 #include <vector>
 109
 110 using namespace std;
 111 using namespace lyx::support;
 112
 113 namespace lyx {
 114
 115 namespace Alert = frontend::Alert;
 116 namespace os = support::os;
 117
 118 namespace {
 119
 120 int const LYX_FORMAT = 317; // Uwe Stöhr: float placement support for wrap floats
 121
 122 typedef map<string, bool> DepClean;
 123 typedef map<docstring, pair<InsetLabel const *, Buffer::References> > RefCache;
 124
 125 } // namespace anon
 126
 127 class Buffer::Impl
 128 {
 129 public:
 130         Impl(Buffer & parent, FileName const & file, bool readonly);
 131
 132         ~Impl()
 133         {
 134                 if (wa_) {
 135                         wa_->closeAll();
 136                         delete wa_;
 137                 }
 138         }
 139
 140         BufferParams params;
 141         LyXVC lyxvc;
 142         FileName temppath;
 143         mutable TexRow texrow;
 144         Buffer const * parent_buffer;
 145
 146         /// need to regenerate .tex?
 147         DepClean dep_clean;
 148
 149         /// is save needed?
 150         mutable bool lyx_clean;
 151
 152         /// is autosave needed?
 153         mutable bool bak_clean;
 154
 155         /// is this a unnamed file (New...)?
 156         bool unnamed;
 157
 158         /// buffer is r/o
 159         bool read_only;
 160
 161         /// name of the file the buffer is associated with.
 162         FileName filename;
 163
 164         /** Set to true only when the file is fully loaded.
 165          *  Used to prevent the premature generation of previews
 166          *  and by the citation inset.
 167          */
 168         bool file_fully_loaded;
 169
 170         ///
 171         mutable TocBackend toc_backend;
 172
 173         /// macro tables
 174         typedef pair<DocIterator, MacroData> ScopeMacro;
 175         typedef map<DocIterator, ScopeMacro> PositionScopeMacroMap;
 176         typedef map<docstring, PositionScopeMacroMap> NamePositionScopeMacroMap;
 177         NamePositionScopeMacroMap macros;
 178         bool macro_lock;
 179
 180         /// positions of child buffers in the buffer
 181         typedef map<Buffer const * const, DocIterator> BufferPositionMap;
 182         typedef pair<DocIterator, Buffer const *> ScopeBuffer;
 183         typedef map<DocIterator, ScopeBuffer> PositionScopeBufferMap;
 184         BufferPositionMap children_positions;
 185         PositionScopeBufferMap position_to_children;
 186
 187         /// Container for all sort of Buffer dependant errors.
 188         map<string, ErrorList> errorLists;
 189
 190         /// all embedded files of this buffer
 191         EmbeddedFileList embedded_files;
 192
 193         /// timestamp and checksum used to test if the file has been externally
 194         /// modified. (Used to properly enable 'File->Revert to saved', bug 4114).
 195         time_t timestamp_;
 196         unsigned long checksum_;
 197
 198         ///
 199         frontend::WorkAreaManager * wa_;
 200
 201         ///
 202         Undo undo_;
 203
 204         /// A cache for the bibfiles (including bibfiles of loaded child
 205         /// documents), needed for appropriate update of natbib labels.
 206         mutable EmbeddedFileList bibfilesCache_;
 207
 208         mutable RefCache ref_cache_;
 209
 210         /// our Text that should be wrapped in an InsetText
 211         InsetText inset;
 212 };
 213
 214 /// Creates the per buffer temporary directory
 215 static FileName createBufferTmpDir()
 216 {
 217         static int count;
 218         // We are in our own directory.  Why bother to mangle name?
 219         // In fact I wrote this code to circumvent a problematic behaviour
 220         // (bug?) of EMX mkstemp().
 221         FileName tmpfl(package().temp_dir().absFilename() + "/lyx_tmpbuf" +
 222                 convert<string>(count++));
 223
 224         if (!tmpfl.createDirectory(0777)) {
 225                 throw ExceptionMessage(WarningException, _("Disk Error: "), bformat(
 226                         _("LyX could not create the temporary directory '%1$s' (Disk is full maybe?)"),
 227                         from_utf8(tmpfl.absFilename())));
 228         }
 229         return tmpfl;
 230 }
 231
 232
 233 Buffer::Impl::Impl(Buffer & parent, FileName const & file, bool readonly_)
 234         : parent_buffer(0), lyx_clean(true), bak_clean(true), unnamed(false),
 235           read_only(readonly_), filename(file), file_fully_loaded(false),
 236           toc_backend(&parent), macro_lock(false),
 237           embedded_files(), timestamp_(0), checksum_(0), wa_(0),
 238           undo_(parent)
 239 {
 240         temppath = createBufferTmpDir();
 241         lyxvc.setBuffer(&parent);
 242         if (use_gui)
 243                 wa_ = new frontend::WorkAreaManager;
 244 }
 245
 246
 247 Buffer::Buffer(string const & file, bool readonly)
 248         : d(new Impl(*this, FileName(file), readonly)), gui_(0)
 249 {
 250         LYXERR(Debug::INFO, "Buffer::Buffer()");
 251
 252         d->inset.setBuffer(*this);
 253         d->inset.initParagraphs(*this);
 254         d->inset.setAutoBreakRows(true);
 255         d->inset.getText(0)->setMacrocontextPosition(par_iterator_begin());
 256 }
 257
 258
 259 Buffer::~Buffer()
 260 {
 261         LYXERR(Debug::INFO, "Buffer::~Buffer()");
 262         // here the buffer should take care that it is
 263         // saved properly, before it goes into the void.
 264
 265         // GuiView already destroyed
 266         gui_ = 0;
 267
 268         // clear references to children in macro tables
 269         d->children_positions.clear();
 270         d->position_to_children.clear();
 271
 272         if (!d->temppath.destroyDirectory()) {
 273                 Alert::warning(_("Could not remove temporary directory"),
 274                         bformat(_("Could not remove the temporary directory %1$s"),
 275                         from_utf8(d->temppath.absFilename())));
 276         }
 277
 278         // Remove any previewed LaTeX snippets associated with this buffer.
 279         graphics::Previews::get().removeLoader(*this);
 280
 281         delete d;
 282 }
 283
 284
 285 void Buffer::changed() const
 286 {
 287         if (d->wa_)
 288                 d->wa_->redrawAll();
 289 }
 290
 291
 292 frontend::WorkAreaManager & Buffer::workAreaManager() const
 293 {
 294         BOOST_ASSERT(d->wa_);
 295         return *d->wa_;
 296 }
 297
 298
 299 Text & Buffer::text() const
 300 {
 301         return const_cast<Text &>(d->inset.text_);
 302 }
 303
 304
 305 Inset & Buffer::inset() const
 306 {
 307         return const_cast<InsetText &>(d->inset);
 308 }
 309
 310
 311 BufferParams & Buffer::params()
 312 {
 313         return d->params;
 314 }
 315
 316
 317 BufferParams const & Buffer::params() const
 318 {
 319         return d->params;
 320 }
 321
 322
 323 ParagraphList & Buffer::paragraphs()
 324 {
 325         return text().paragraphs();
 326 }
 327
 328
 329 ParagraphList const & Buffer::paragraphs() const
 330 {
 331         return text().paragraphs();
 332 }
 333
 334
 335 LyXVC & Buffer::lyxvc()
 336 {
 337         return d->lyxvc;
 338 }
 339
 340
 341 LyXVC const & Buffer::lyxvc() const
 342 {
 343         return d->lyxvc;
 344 }
 345
 346
 347 string const Buffer::temppath() const
 348 {
 349         return d->temppath.absFilename();
 350 }
 351
 352
 353 TexRow const & Buffer::texrow() const
 354 {
 355         return d->texrow;
 356 }
 357
 358
 359 TocBackend & Buffer::tocBackend() const
 360 {
 361         return d->toc_backend;
 362 }
 363
 364
 365 EmbeddedFileList & Buffer::embeddedFiles()
 366 {
 367         return d->embedded_files;
 368 }
 369
 370
 371 EmbeddedFileList const & Buffer::embeddedFiles() const
 372 {
 373         return d->embedded_files;
 374 }
 375
 376
 377 bool Buffer::embedded() const
 378 {
 379         return params().embedded;
 380 }
 381
 382
 383 Undo & Buffer::undo()
 384 {
 385         return d->undo_;
 386 }
 387
 388
 389 string Buffer::latexName(bool const no_path) const
 390 {
 391         FileName latex_name = makeLatexName(d->filename);
 392         return no_path ? latex_name.onlyFileName()
 393                 : latex_name.absFilename();
 394 }
 395
 396
 397 string Buffer::logName(LogType * type) const
 398 {
 399         string const filename = latexName(false);
 400
 401         if (filename.empty()) {
 402                 if (type)
 403                         *type = latexlog;
 404                 return string();
 405         }
 406
 407         string const path = temppath();
 408
 409         FileName const fname(addName(temppath(),
 410                                      onlyFilename(changeExtension(filename,
 411                                                                   ".log"))));
 412         FileName const bname(
 413                 addName(path, onlyFilename(
 414                         changeExtension(filename,
 415                                         formats.extension("literate") + ".out"))));
 416
 417         // If no Latex log or Build log is newer, show Build log
 418
 419         if (bname.exists() &&
 420             (!fname.exists() || fname.lastModified() < bname.lastModified())) {
 421                 LYXERR(Debug::FILES, "Log name calculated as: " << bname);
 422                 if (type)
 423                         *type = buildlog;
 424                 return bname.absFilename();
 425         }
 426         LYXERR(Debug::FILES, "Log name calculated as: " << fname);
 427         if (type)
 428                         *type = latexlog;
 429         return fname.absFilename();
 430 }
 431
 432
 433 void Buffer::setReadonly(bool const flag)
 434 {
 435         if (d->read_only != flag) {
 436                 d->read_only = flag;
 437                 setReadOnly(flag);
 438         }
 439 }
 440
 441
 442 void Buffer::setFileName(string const & newfile)
 443 {
 444         d->filename = makeAbsPath(newfile);
 445         setReadonly(d->filename.isReadOnly());
 446         updateTitles();
 447 }
 448
 449
 450 int Buffer::readHeader(Lexer & lex)
 451 {
 452         int unknown_tokens = 0;
 453         int line = -1;
 454         int begin_header_line = -1;
 455
 456         // Initialize parameters that may be/go lacking in header:
 457         params().branchlist().clear();
 458         params().preamble.erase();
 459         params().options.erase();
 460         params().float_placement.erase();
 461         params().paperwidth.erase();
 462         params().paperheight.erase();
 463         params().leftmargin.erase();
 464         params().rightmargin.erase();
 465         params().topmargin.erase();
 466         params().bottommargin.erase();
 467         params().headheight.erase();
 468         params().headsep.erase();
 469         params().footskip.erase();
 470         params().columnsep.erase();
 471         params().listings_params.clear();
 472         params().clearLayoutModules();
 473         params().pdfoptions().clear();
 474
 475         for (int i = 0; i < 4; ++i) {
 476                 params().user_defined_bullet(i) = ITEMIZE_DEFAULTS[i];
 477                 params().temp_bullet(i) = ITEMIZE_DEFAULTS[i];
 478         }
 479
 480         ErrorList & errorList = d->errorLists["Parse"];
 481
 482         while (lex.isOK()) {
 483                 lex.next();
 484                 string const token = lex.getString();
 485
 486                 if (token.empty())
 487                         continue;
 488
 489                 if (token == "\\end_header")
 490                         break;
 491
 492                 ++line;
 493                 if (token == "\\begin_header") {
 494                         begin_header_line = line;
 495                         continue;
 496                 }
 497
 498                 LYXERR(Debug::PARSER, "Handling document header token: `"
 499                                       << token << '\'');
 500
 501                 string unknown = params().readToken(lex, token, d->filename.onlyPath());
 502                 if (!unknown.empty()) {
 503                         if (unknown[0] != '\\' && token == "\\textclass") {
 504                                 Alert::warning(_("Unknown document class"),
 505                        bformat(_("Using the default document class, because the "
 506                                               "class %1$s is unknown."), from_utf8(unknown)));
 507                         } else {
 508                                 ++unknown_tokens;
 509                                 docstring const s = bformat(_("Unknown token: "
 510                                                                         "%1$s %2$s\n"),
 511                                                          from_utf8(token),
 512                                                          lex.getDocString());
 513                                 errorList.push_back(ErrorItem(_("Document header error"),
 514                                         s, -1, 0, 0));
 515                         }
 516                 }
 517         }
 518         if (begin_header_line) {
 519                 docstring const s = _("\\begin_header is missing");
 520                 errorList.push_back(ErrorItem(_("Document header error"),
 521                         s, -1, 0, 0));
 522         }
 523
 524         params().makeDocumentClass();
 525
 526         return unknown_tokens;
 527 }
 528
 529
 530 // Uwe C. Schroeder
 531 // changed to be public and have one parameter
 532 // Returns false if "\end_document" is not read (Asger)
 533 bool Buffer::readDocument(Lexer & lex)
 534 {
 535         ErrorList & errorList = d->errorLists["Parse"];
 536         errorList.clear();
 537
 538         lex.next();
 539         string const token = lex.getString();
 540         if (token != "\\begin_document") {
 541                 docstring const s = _("\\begin_document is missing");
 542                 errorList.push_back(ErrorItem(_("Document header error"),
 543                         s, -1, 0, 0));
 544         }
 545
 546         // we are reading in a brand new document
 547         BOOST_ASSERT(paragraphs().empty());
 548
 549         readHeader(lex);
 550
 551         if (params().outputChanges) {
 552                 bool dvipost    = LaTeXFeatures::isAvailable("dvipost");
 553                 bool xcolorsoul = LaTeXFeatures::isAvailable("soul") &&
 554                                   LaTeXFeatures::isAvailable("xcolor");
 555
 556                 if (!dvipost && !xcolorsoul) {
 557                         Alert::warning(_("Changes not shown in LaTeX output"),
 558                                        _("Changes will not be highlighted in LaTeX output, "
 559                                          "because neither dvipost nor xcolor/soul are installed.\n"
 560                                          "Please install these packages or redefine "
 561                                          "\\lyxadded and \\lyxdeleted in the LaTeX preamble."));
 562                 } else if (!xcolorsoul) {
 563                         Alert::warning(_("Changes not shown in LaTeX output"),
 564                                        _("Changes will not be highlighted in LaTeX output "
 565                                          "when using pdflatex, because xcolor and soul are not installed.\n"
 566                                          "Please install both packages or redefine "
 567                                          "\\lyxadded and \\lyxdeleted in the LaTeX preamble."));
 568                 }
 569         }
 570
 571         // read main text
 572         bool const res = text().read(*this, lex, errorList, &(d->inset));
 573
 574         updateMacros();
 575         updateMacroInstances();
 576         return res;
 577 }
 578
 579
 580 // needed to insert the selection
 581 void Buffer::insertStringAsLines(ParagraphList & pars,
 582         pit_type & pit, pos_type & pos,
 583         Font const & fn, docstring const & str, bool autobreakrows)
 584 {
 585         Font font = fn;
 586
 587         // insert the string, don't insert doublespace
 588         bool space_inserted = true;
 589         for (docstring::const_iterator cit = str.begin();
 590             cit != str.end(); ++cit) {
 591                 Paragraph & par = pars[pit];
 592                 if (*cit == '\n') {
 593                         if (autobreakrows && (!par.empty() || par.allowEmpty())) {
 594                                 breakParagraph(params(), pars, pit, pos,
 595                                                par.layout().isEnvironment());
 596                                 ++pit;
 597                                 pos = 0;
 598                                 space_inserted = true;
 599                         } else {
 600                                 continue;
 601                         }
 602                         // do not insert consecutive spaces if !free_spacing
 603                 } else if ((*cit == ' ' || *cit == '\t') &&
 604                            space_inserted && !par.isFreeSpacing()) {
 605                         continue;
 606                 } else if (*cit == '\t') {
 607                         if (!par.isFreeSpacing()) {
 608                                 // tabs are like spaces here
 609                                 par.insertChar(pos, ' ', font, params().trackChanges);
 610                                 ++pos;
 611                                 space_inserted = true;
 612                         } else {
 613                                 const pos_type n = 8 - pos % 8;
 614                                 for (pos_type i = 0; i < n; ++i) {
 615                                         par.insertChar(pos, ' ', font, params().trackChanges);
 616                                         ++pos;
 617                                 }
 618                                 space_inserted = true;
 619                         }
 620                 } else if (!isPrintable(*cit)) {
 621                         // Ignore unprintables
 622                         continue;
 623                 } else {
 624                         // just insert the character
 625                         par.insertChar(pos, *cit, font, params().trackChanges);
 626                         ++pos;
 627                         space_inserted = (*cit == ' ');
 628                 }
 629
 630         }
 631 }
 632
 633
 634 bool Buffer::readString(string const & s)
 635 {
 636         params().compressed = false;
 637
 638         // remove dummy empty par
 639         paragraphs().clear();
 640         Lexer lex(0, 0);
 641         istringstream is(s);
 642         lex.setStream(is);
 643         FileName const name = FileName::tempName();
 644         switch (readFile(lex, name, true)) {
 645         case failure:
 646                 return false;
 647         case wrongversion: {
 648                 // We need to call lyx2lyx, so write the input to a file
 649                 ofstream os(name.toFilesystemEncoding().c_str());
 650                 os << s;
 651                 os.close();
 652                 return readFile(name);
 653         }
 654         case success:
 655                 break;
 656         }
 657
 658         return true;
 659 }
 660
 661
 662 bool Buffer::readFile(FileName const & filename)
 663 {
 664         FileName fname(filename);
 665         // Check if the file is compressed.
 666         string format = filename.guessFormatFromContents();
 667         if (format == "zip") {
 668                 // decompress to a temp directory
 669                 LYXERR(Debug::FILES, filename << " is in zip format. Unzip to " << temppath());
 670                 ::unzipToDir(filename.toFilesystemEncoding(), temppath());
 671                 //
 672                 FileName lyxfile(addName(temppath(), "content.lyx"));
 673                 // if both manifest.txt and file.lyx exist, this is am embedded file
 674                 if (lyxfile.exists()) {
 675                         // if in bundled format, save checksum of the compressed file, not content.lyx
 676                         saveCheckSum(filename);
 677                         params().embedded = true;
 678                         fname = lyxfile;
 679                 }
 680         }
 681         // The embedded lyx file can also be compressed, for backward compatibility
 682         format = fname.guessFormatFromContents();
 683         if (format == "gzip" || format == "zip" || format == "compress")
 684                 params().compressed = true;
 685
 686         // remove dummy empty par
 687         paragraphs().clear();
 688         Lexer lex(0, 0);
 689         lex.setFile(fname);
 690         if (readFile(lex, fname) != success)
 691                 return false;
 692
 693         return true;
 694 }
 695
 696
 697 bool Buffer::isFullyLoaded() const
 698 {
 699         return d->file_fully_loaded;
 700 }
 701
 702
 703 void Buffer::setFullyLoaded(bool value)
 704 {
 705         d->file_fully_loaded = value;
 706 }
 707
 708
 709 Buffer::ReadStatus Buffer::readFile(Lexer & lex, FileName const & filename,
 710                 bool fromstring)
 711 {
 712         BOOST_ASSERT(!filename.empty());
 713
 714         if (!lex.isOK()) {
 715                 Alert::error(_("Document could not be read"),
 716                              bformat(_("%1$s could not be read."), from_utf8(filename.absFilename())));
 717                 return failure;
 718         }
 719
 720         lex.next();
 721         string const token = lex.getString();
 722
 723         if (!lex) {
 724                 Alert::error(_("Document could not be read"),
 725                              bformat(_("%1$s could not be read."), from_utf8(filename.absFilename())));
 726                 return failure;
 727         }
 728
 729         // the first token _must_ be...
 730         if (token != "\\lyxformat") {
 731                 lyxerr << "Token: " << token << endl;
 732
 733                 Alert::error(_("Document format failure"),
 734                              bformat(_("%1$s is not a LyX document."),
 735                                        from_utf8(filename.absFilename())));
 736                 return failure;
 737         }
 738
 739         lex.next();
 740         string tmp_format = lex.getString();
 741         //lyxerr << "LyX Format: `" << tmp_format << '\'' << endl;
 742         // if present remove ".," from string.
 743         string::size_type dot = tmp_format.find_first_of(".,");
 744         //lyxerr << "           dot found at " << dot << endl;
 745         if (dot != string::npos)
 746                         tmp_format.erase(dot, 1);
 747         int const file_format = convert<int>(tmp_format);
 748         //lyxerr << "format: " << file_format << endl;
 749
 750         // save timestamp and checksum of the original disk file, making sure
 751         // to not overwrite them with those of the file created in the tempdir
 752         // when it has to be converted to the current format.
 753         if (!d->checksum_) {
 754                 // Save the timestamp and checksum of disk file. If filename is an
 755                 // emergency file, save the timestamp and checksum of the original lyx file
 756                 // because isExternallyModified will check for this file. (BUG4193)
 757                 string diskfile = filename.absFilename();
 758                 if (suffixIs(diskfile, ".emergency"))
 759                         diskfile = diskfile.substr(0, diskfile.size() - 10);
 760                 saveCheckSum(FileName(diskfile));
 761         }
 762
 763         if (file_format != LYX_FORMAT) {
 764
 765                 if (fromstring)
 766                         // lyx2lyx would fail
 767                         return wrongversion;
 768
 769                 FileName const tmpfile = FileName::tempName();
 770                 if (tmpfile.empty()) {
 771                         Alert::error(_("Conversion failed"),
 772                                      bformat(_("%1$s is from a different"
 773                                               " version of LyX, but a temporary"
 774                                               " file for converting it could"
 775                                                             " not be created."),
 776                                               from_utf8(filename.absFilename())));
 777                         return failure;
 778                 }
 779                 FileName const lyx2lyx = libFileSearch("lyx2lyx", "lyx2lyx");
 780                 if (lyx2lyx.empty()) {
 781                         Alert::error(_("Conversion script not found"),
 782                                      bformat(_("%1$s is from a different"
 783                                                " version of LyX, but the"
 784                                                " conversion script lyx2lyx"
 785                                                             " could not be found."),
 786                                                from_utf8(filename.absFilename())));
 787                         return failure;
 788                 }
 789                 ostringstream command;
 790                 command << os::python()
 791                         << ' ' << quoteName(lyx2lyx.toFilesystemEncoding())
 792                         << " -t " << convert<string>(LYX_FORMAT)
 793                         << " -o " << quoteName(tmpfile.toFilesystemEncoding())
 794                         << ' ' << quoteName(filename.toFilesystemEncoding());
 795                 string const command_str = command.str();
 796
 797                 LYXERR(Debug::INFO, "Running '" << command_str << '\'');
 798
 799                 cmd_ret const ret = runCommand(command_str);
 800                 if (ret.first != 0) {
 801                         Alert::error(_("Conversion script failed"),
 802                                      bformat(_("%1$s is from a different version"
 803                                               " of LyX, but the lyx2lyx script"
 804                                                             " failed to convert it."),
 805                                               from_utf8(filename.absFilename())));
 806                         return failure;
 807                 } else {
 808                         bool const ret = readFile(tmpfile);
 809                         // Do stuff with tmpfile name and buffer name here.
 810                         return ret ? success : failure;
 811                 }
 812
 813         }
 814
 815         if (readDocument(lex)) {
 816                 Alert::error(_("Document format failure"),
 817                              bformat(_("%1$s ended unexpectedly, which means"
 818                                                     " that it is probably corrupted."),
 819                                        from_utf8(filename.absFilename())));
 820         }
 821
 822         d->file_fully_loaded = true;
 823         return success;
 824 }
 825
 826
 827 // Should probably be moved to somewhere else: BufferView? LyXView?
 828 bool Buffer::save() const
 829 {
 830         // We don't need autosaves in the immediate future. (Asger)
 831         resetAutosaveTimers();
 832
 833         string const encodedFilename = d->filename.toFilesystemEncoding();
 834
 835         FileName backupName;
 836         bool madeBackup = false;
 837
 838         // make a backup if the file already exists
 839         if (lyxrc.make_backup && fileName().exists()) {
 840                 backupName = FileName(absFileName() + '~');
 841                 if (!lyxrc.backupdir_path.empty()) {
 842                         string const mangledName =
 843                                 subst(subst(backupName.absFilename(), '/', '!'), ':', '!');
 844                         backupName = FileName(addName(lyxrc.backupdir_path,
 845                                                       mangledName));
 846                 }
 847                 if (fileName().copyTo(backupName)) {
 848                         madeBackup = true;
 849                 } else {
 850                         Alert::error(_("Backup failure"),
 851                                      bformat(_("Cannot create backup file %1$s.\n"
 852                                                "Please check whether the directory exists and is writeable."),
 853                                              from_utf8(backupName.absFilename())));
 854                         //LYXERR(Debug::DEBUG, "Fs error: " << fe.what());
 855                 }
 856         }
 857
 858         // ask if the disk file has been externally modified (use checksum method)
 859         if (fileName().exists() && isExternallyModified(checksum_method)) {
 860                 docstring const file = makeDisplayPath(absFileName(), 20);
 861                 docstring text = bformat(_("Document %1$s has been externally modified. Are you sure "
 862                                                              "you want to overwrite this file?"), file);
 863                 int const ret = Alert::prompt(_("Overwrite modified file?"),
 864                         text, 1, 1, _("&Overwrite"), _("&Cancel"));
 865                 if (ret == 1)
 866                         return false;
 867         }
 868
 869         if (writeFile(d->filename)) {
 870                 markClean();
 871                 return true;
 872         } else {
 873                 // Saving failed, so backup is not backup
 874                 if (madeBackup)
 875                         backupName.moveTo(d->filename);
 876                 return false;
 877         }
 878 }
 879
 880
 881 bool Buffer::writeFile(FileName const & fname) const
 882 {
 883         if (d->read_only && fname == d->filename)
 884                 return false;
 885
 886         bool retval = false;
 887
 888         FileName content;
 889         if (params().embedded)
 890                 // first write the .lyx file to the temporary directory
 891                 content = FileName(addName(temppath(), "content.lyx"));
 892         else
 893                 content = fname;
 894
 895         docstring const str = bformat(_("Saving document %1$s..."),
 896                 makeDisplayPath(content.absFilename()));
 897         message(str);
 898
 899         if (params().compressed) {
 900                 gz::ogzstream ofs(content.toFilesystemEncoding().c_str(), ios::out|ios::trunc);
 901                 retval = ofs && write(ofs);
 902         } else {
 903                 ofstream ofs(content.toFilesystemEncoding().c_str(), ios::out|ios::trunc);
 904                 retval = ofs && write(ofs);
 905         }
 906
 907         if (!retval) {
 908                 message(str + _(" could not write file!."));
 909                 return false;
 910         }
 911
 912         removeAutosaveFile(d->filename.absFilename());
 913
 914         if (params().embedded) {
 915                 message(str + _(" writing embedded files!."));
 916                 // if embedding is enabled, write file.lyx and all the embedded files
 917                 // to the zip file fname.
 918                 if (!d->embedded_files.writeFile(fname, *this)) {
 919                         message(str + _(" could not write embedded files!."));
 920                         return false;
 921                 }
 922         }
 923         saveCheckSum(d->filename);
 924         message(str + _(" done."));
 925
 926         return true;
 927 }
 928
 929
 930 bool Buffer::write(ostream & ofs) const
 931 {
 932 #ifdef HAVE_LOCALE
 933         // Use the standard "C" locale for file output.
 934         ofs.imbue(locale::classic());
 935 #endif
 936
 937         // The top of the file should not be written by params().
 938
 939         // write out a comment in the top of the file
 940         ofs << "#LyX " << lyx_version
 941             << " created this file. For more info see http://www.lyx.org/\n"
 942             << "\\lyxformat " << LYX_FORMAT << "\n"
 943             << "\\begin_document\n";
 944
 945         /// For each author, set 'used' to true if there is a change
 946         /// by this author in the document; otherwise set it to 'false'.
 947         AuthorList::Authors::const_iterator a_it = params().authors().begin();
 948         AuthorList::Authors::const_iterator a_end = params().authors().end();
 949         for (; a_it != a_end; ++a_it)
 950                 a_it->second.setUsed(false);
 951
 952         ParIterator const end = const_cast<Buffer *>(this)->par_iterator_end();
 953         ParIterator it = const_cast<Buffer *>(this)->par_iterator_begin();
 954         for ( ; it != end; ++it)
 955                 it->checkAuthors(params().authors());
 956
 957         // now write out the buffer parameters.
 958         ofs << "\\begin_header\n";
 959         params().writeFile(ofs);
 960         ofs << "\\end_header\n";
 961
 962         // write the text
 963         ofs << "\n\\begin_body\n";
 964         text().write(*this, ofs);
 965         ofs << "\n\\end_body\n";
 966
 967         // Write marker that shows file is complete
 968         ofs << "\\end_document" << endl;
 969
 970         // Shouldn't really be needed....
 971         //ofs.close();
 972
 973         // how to check if close went ok?
 974         // Following is an attempt... (BE 20001011)
 975
 976         // good() returns false if any error occured, including some
 977         //        formatting error.
 978         // bad()  returns true if something bad happened in the buffer,
 979         //        which should include file system full errors.
 980
 981         bool status = true;
 982         if (!ofs) {
 983                 status = false;
 984                 lyxerr << "File was not closed properly." << endl;
 985         }
 986
 987         return status;
 988 }
 989
 990
 991 bool Buffer::makeLaTeXFile(FileName const & fname,
 992                            string const & original_path,
 993                            OutputParams const & runparams,
 994                            bool output_preamble, bool output_body) const
 995 {
 996         string const encoding = runparams.encoding->iconvName();
 997         LYXERR(Debug::LATEX, "makeLaTeXFile encoding: " << encoding << "...");
 998
 999         odocfstream ofs;
1000         try { ofs.reset(encoding); }
1001         catch (iconv_codecvt_facet_exception & e) {
1002                 lyxerr << "Caught iconv exception: " << e.what() << endl;
1003                 Alert::error(_("Iconv software exception Detected"), bformat(_("Please "
1004                         "verify that the support software for your encoding (%1$s) is "
1005                         "properly installed"), from_ascii(encoding)));
1006                 return false;
1007         }
1008         if (!openFileWrite(ofs, fname))
1009                 return false;
1010
1011         //TexStream ts(ofs.rdbuf(), &texrow());
1012         ErrorList & errorList = d->errorLists["Export"];
1013         errorList.clear();
1014         bool failed_export = false;
1015         try {
1016                 d->texrow.reset();
1017                 writeLaTeXSource(ofs, original_path,
1018                       runparams, output_preamble, output_body);
1019         }
1020         catch (EncodingException & e) {
1021                 odocstringstream ods;
1022                 ods.put(e.failed_char);
1023                 ostringstream oss;
1024                 oss << "0x" << hex << e.failed_char << dec;
1025                 docstring msg = bformat(_("Could not find LaTeX command for character '%1$s'"
1026                                           " (code point %2$s)"),
1027                                           ods.str(), from_utf8(oss.str()));
1028                 errorList.push_back(ErrorItem(msg, _("Some characters of your document are probably not "
1029                                 "representable in the chosen encoding.\n"
1030                                 "Changing the document encoding to utf8 could help."),
1031                                 e.par_id, e.pos, e.pos + 1));
1032                 failed_export = true;
1033         }
1034         catch (iconv_codecvt_facet_exception & e) {
1035                 errorList.push_back(ErrorItem(_("iconv conversion failed"),
1036                         _(e.what()), -1, 0, 0));
1037                 failed_export = true;
1038         }
1039         catch (exception const & e) {
1040                 errorList.push_back(ErrorItem(_("conversion failed"),
1041                         _(e.what()), -1, 0, 0));
1042                 failed_export = true;
1043         }
1044         catch (...) {
1045                 lyxerr << "Caught some really weird exception..." << endl;
1046                 LyX::cref().exit(1);
1047         }
1048
1049         ofs.close();
1050         if (ofs.fail()) {
1051                 failed_export = true;
1052                 lyxerr << "File '" << fname << "' was not closed properly." << endl;
1053         }
1054
1055         errors("Export");
1056         return !failed_export;
1057 }
1058
1059
1060 void Buffer::writeLaTeXSource(odocstream & os,
1061                            string const & original_path,
1062                            OutputParams const & runparams_in,
1063                            bool const output_preamble, bool const output_body) const
1064 {
1065         // The child documents, if any, shall be already loaded at this point.
1066
1067         OutputParams runparams = runparams_in;
1068
1069         // validate the buffer.
1070         LYXERR(Debug::LATEX, "  Validating buffer...");
1071         LaTeXFeatures features(*this, params(), runparams);
1072         validate(features);
1073         LYXERR(Debug::LATEX, "  Buffer validation done.");
1074
1075         // The starting paragraph of the coming rows is the
1076         // first paragraph of the document. (Asger)
1077         if (output_preamble && runparams.nice) {
1078                 os << "%% LyX " << lyx_version << " created this file.  "
1079                         "For more info, see http://www.lyx.org/.\n"
1080                         "%% Do not edit unless you really know what "
1081                         "you are doing.\n";
1082                 d->texrow.newline();
1083                 d->texrow.newline();
1084         }
1085         LYXERR(Debug::INFO, "lyx document header finished");
1086         // There are a few differences between nice LaTeX and usual files:
1087         // usual is \batchmode and has a
1088         // special input@path to allow the including of figures
1089         // with either \input or \includegraphics (what figinsets do).
1090         // input@path is set when the actual parameter
1091         // original_path is set. This is done for usual tex-file, but not
1092         // for nice-latex-file. (Matthias 250696)
1093         // Note that input@path is only needed for something the user does
1094         // in the preamble, included .tex files or ERT, files included by
1095         // LyX work without it.
1096         if (output_preamble) {
1097                 if (!runparams.nice) {
1098                         // code for usual, NOT nice-latex-file
1099                         os << "\\batchmode\n"; // changed
1100                         // from \nonstopmode
1101                         d->texrow.newline();
1102                 }
1103                 if (!original_path.empty()) {
1104                         // FIXME UNICODE
1105                         // We don't know the encoding of inputpath
1106                         docstring const inputpath = from_utf8(latex_path(original_path));
1107                         os << "\\makeatletter\n"
1108                            << "\\def\\input@path{{"
1109                            << inputpath << "/}}\n"
1110                            << "\\makeatother\n";
1111                         d->texrow.newline();
1112                         d->texrow.newline();
1113                         d->texrow.newline();
1114                 }
1115
1116                 // Write the preamble
1117                 runparams.use_babel = params().writeLaTeX(os, features, d->texrow);
1118
1119                 if (!output_body)
1120                         return;
1121
1122                 // make the body.
1123                 os << "\\begin{document}\n";
1124                 d->texrow.newline();
1125         } // output_preamble
1126
1127         d->texrow.start(paragraphs().begin()->id(), 0);
1128
1129         LYXERR(Debug::INFO, "preamble finished, now the body.");
1130
1131         // Don't move this behind the parent_buffer=0 code below,
1132         // because then the macros will not get the right "redefinition"
1133         // flag as they don't see the parent macros which are output before.
1134         updateMacros();
1135
1136         // fold macros if possible, still with parent buffer as the
1137         // macros will be put in the prefix anyway.
1138         updateMacroInstances();
1139
1140         // if we are doing a real file with body, even if this is the
1141         // child of some other buffer, let's cut the link here.
1142         // This happens for example if only a child document is printed.
1143         Buffer const * save_parent = 0;
1144         if (output_preamble) {
1145                 // output the macros visible for this buffer
1146                 writeParentMacros(os);
1147
1148                 save_parent = d->parent_buffer;
1149                 d->parent_buffer = 0;
1150         }
1151
1152         // the real stuff
1153         latexParagraphs(*this, text(), os, d->texrow, runparams);
1154
1155         // Restore the parenthood if needed
1156         if (output_preamble) {
1157                 d->parent_buffer = save_parent;
1158
1159                 // restore macros with correct parent buffer (especially
1160                 // important for the redefinition flag which depends on the
1161                 // parent)
1162                 updateMacros();
1163         }
1164
1165         // add this just in case after all the paragraphs
1166         os << endl;
1167         d->texrow.newline();
1168
1169         if (output_preamble) {
1170                 os << "\\end{document}\n";
1171                 d->texrow.newline();
1172                 LYXERR(Debug::LATEX, "makeLaTeXFile...done");
1173         } else {
1174                 LYXERR(Debug::LATEX, "LaTeXFile for inclusion made.");
1175         }
1176         runparams_in.encoding = runparams.encoding;
1177
1178         // Just to be sure. (Asger)
1179         d->texrow.newline();
1180
1181         LYXERR(Debug::INFO, "Finished making LaTeX file.");
1182         LYXERR(Debug::INFO, "Row count was " << d->texrow.rows() - 1 << '.');
1183 }
1184
1185
1186 bool Buffer::isLatex() const
1187 {
1188         return params().documentClass().outputType() == LATEX;
1189 }
1190
1191
1192 bool Buffer::isLiterate() const
1193 {
1194         return params().documentClass().outputType() == LITERATE;
1195 }
1196
1197
1198 bool Buffer::isDocBook() const
1199 {
1200         return params().documentClass().outputType() == DOCBOOK;
1201 }
1202
1203
1204 void Buffer::makeDocBookFile(FileName const & fname,
1205                               OutputParams const & runparams,
1206                               bool const body_only) const
1207 {
1208         LYXERR(Debug::LATEX, "makeDocBookFile...");
1209
1210         odocfstream ofs;
1211         if (!openFileWrite(ofs, fname))
1212                 return;
1213
1214         writeDocBookSource(ofs, fname.absFilename(), runparams, body_only);
1215
1216         ofs.close();
1217         if (ofs.fail())
1218                 lyxerr << "File '" << fname << "' was not closed properly." << endl;
1219 }
1220
1221
1222 void Buffer::writeDocBookSource(odocstream & os, string const & fname,
1223                              OutputParams const & runparams,
1224                              bool const only_body) const
1225 {
1226         LaTeXFeatures features(*this, params(), runparams);
1227         validate(features);
1228
1229         d->texrow.reset();
1230
1231         DocumentClass const & tclass = params().documentClass();
1232         string const top_element = tclass.latexname();
1233
1234         if (!only_body) {
1235                 if (runparams.flavor == OutputParams::XML)
1236                         os << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
1237
1238                 // FIXME UNICODE
1239                 os << "<!DOCTYPE " << from_ascii(top_element) << ' ';
1240
1241                 // FIXME UNICODE
1242                 if (! tclass.class_header().empty())
1243                         os << from_ascii(tclass.class_header());
1244                 else if (runparams.flavor == OutputParams::XML)
1245                         os << "PUBLIC \"-//OASIS//DTD DocBook XML//EN\" "
1246                             << "\"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd\"";
1247                 else
1248                         os << " PUBLIC \"-//OASIS//DTD DocBook V4.2//EN\"";
1249
1250                 docstring preamble = from_utf8(params().preamble);
1251                 if (runparams.flavor != OutputParams::XML ) {
1252                         preamble += "<!ENTITY % output.print.png \"IGNORE\">\n";
1253                         preamble += "<!ENTITY % output.print.pdf \"IGNORE\">\n";
1254                         preamble += "<!ENTITY % output.print.eps \"IGNORE\">\n";
1255                         preamble += "<!ENTITY % output.print.bmp \"IGNORE\">\n";
1256                 }
1257
1258                 string const name = runparams.nice
1259                         ? changeExtension(absFileName(), ".sgml") : fname;
1260                 preamble += features.getIncludedFiles(name);
1261                 preamble += features.getLyXSGMLEntities();
1262
1263                 if (!preamble.empty()) {
1264                         os << "\n [ " << preamble << " ]";
1265                 }
1266                 os << ">\n\n";
1267         }
1268
1269         string top = top_element;
1270         top += " lang=\"";
1271         if (runparams.flavor == OutputParams::XML)
1272                 top += params().language->code();
1273         else
1274                 top += params().language->code().substr(0,2);
1275         top += '"';
1276
1277         if (!params().options.empty()) {
1278                 top += ' ';
1279                 top += params().options;
1280         }
1281
1282         os << "<!-- " << ((runparams.flavor == OutputParams::XML)? "XML" : "SGML")
1283             << " file was created by LyX " << lyx_version
1284             << "\n  See http://www.lyx.org/ for more information -->\n";
1285
1286         params().documentClass().counters().reset();
1287
1288         updateMacros();
1289
1290         sgml::openTag(os, top);
1291         os << '\n';
1292         docbookParagraphs(paragraphs(), *this, os, runparams);
1293         sgml::closeTag(os, top_element);
1294 }
1295
1296
1297 // chktex should be run with these flags disabled: 3, 22, 25, 30, 38(?)
1298 // Other flags: -wall -v0 -x
1299 int Buffer::runChktex()
1300 {
1301         setBusy(true);
1302
1303         // get LaTeX-Filename
1304         FileName const path(temppath());
1305         string const name = addName(path.absFilename(), latexName());
1306         string const org_path = filePath();
1307
1308         PathChanger p(path); // path to LaTeX file
1309         message(_("Running chktex..."));
1310
1311         // Generate the LaTeX file if neccessary
1312         OutputParams runparams(&params().encoding());
1313         runparams.flavor = OutputParams::LATEX;
1314         runparams.nice = false;
1315         makeLaTeXFile(FileName(name), org_path, runparams);
1316
1317         TeXErrors terr;
1318         Chktex chktex(lyxrc.chktex_command, onlyFilename(name), filePath());
1319         int const res = chktex.run(terr); // run chktex
1320
1321         if (res == -1) {
1322                 Alert::error(_("chktex failure"),
1323                              _("Could not run chktex successfully."));
1324         } else if (res > 0) {
1325                 ErrorList & errlist = d->errorLists["ChkTeX"];
1326                 errlist.clear();
1327                 bufferErrors(terr, errlist);
1328         }
1329
1330         setBusy(false);
1331
1332         errors("ChkTeX");
1333
1334         return res;
1335 }
1336
1337
1338 void Buffer::validate(LaTeXFeatures & features) const
1339 {
1340         params().validate(features);
1341
1342         updateMacros();
1343
1344         for_each(paragraphs().begin(), paragraphs().end(),
1345                  boost::bind(&Paragraph::validate, _1, boost::ref(features)));
1346
1347         if (lyxerr.debugging(Debug::LATEX)) {
1348                 features.showStruct();
1349         }
1350 }
1351
1352
1353 void Buffer::getLabelList(vector<docstring> & list) const
1354 {
1355         // If this is a child document, use the parent's list instead.
1356         if (d->parent_buffer) {
1357                 d->parent_buffer->getLabelList(list);
1358                 return;
1359         }
1360
1361         list.clear();
1362         Toc & toc = d->toc_backend.toc("label");
1363         TocIterator toc_it = toc.begin();
1364         TocIterator end = toc.end();
1365         for (; toc_it != end; ++toc_it) {
1366                 if (toc_it->depth() == 0)
1367                         list.push_back(toc_it->str());
1368         }
1369 }
1370
1371
1372 void Buffer::updateBibfilesCache() const
1373 {
1374         // If this is a child document, use the parent's cache instead.
1375         if (d->parent_buffer) {
1376                 d->parent_buffer->updateBibfilesCache();
1377                 return;
1378         }
1379
1380         d->bibfilesCache_.clear();
1381         for (InsetIterator it = inset_iterator_begin(inset()); it; ++it) {
1382                 if (it->lyxCode() == BIBTEX_CODE) {
1383                         InsetBibtex const & inset =
1384                                 static_cast<InsetBibtex const &>(*it);
1385                         EmbeddedFileList const bibfiles = inset.embeddedFiles();
1386                         d->bibfilesCache_.insert(d->bibfilesCache_.end(),
1387                                 bibfiles.begin(),
1388                                 bibfiles.end());
1389                 } else if (it->lyxCode() == INCLUDE_CODE) {
1390                         InsetInclude & inset =
1391                                 static_cast<InsetInclude &>(*it);
1392                         inset.updateBibfilesCache();
1393                         EmbeddedFileList const & bibfiles =
1394                                         inset.getBibfilesCache(*this);
1395                         d->bibfilesCache_.insert(d->bibfilesCache_.end(),
1396                                 bibfiles.begin(),
1397                                 bibfiles.end());
1398                 }
1399         }
1400 }
1401
1402
1403 EmbeddedFileList const & Buffer::getBibfilesCache() const
1404 {
1405         // If this is a child document, use the parent's cache instead.
1406         if (d->parent_buffer)
1407                 return d->parent_buffer->getBibfilesCache();
1408
1409         // We update the cache when first used instead of at loading time.
1410         if (d->bibfilesCache_.empty())
1411                 const_cast<Buffer *>(this)->updateBibfilesCache();
1412
1413         return d->bibfilesCache_;
1414 }
1415
1416
1417 bool Buffer::isDepClean(string const & name) const
1418 {
1419         DepClean::const_iterator const it = d->dep_clean.find(name);
1420         if (it == d->dep_clean.end())
1421                 return true;
1422         return it->second;
1423 }
1424
1425
1426 void Buffer::markDepClean(string const & name)
1427 {
1428         d->dep_clean[name] = true;
1429 }
1430
1431
1432 bool Buffer::dispatch(string const & command, bool * result)
1433 {
1434         return dispatch(lyxaction.lookupFunc(command), result);
1435 }
1436
1437
1438 bool Buffer::dispatch(FuncRequest const & func, bool * result)
1439 {
1440         bool dispatched = true;
1441
1442         switch (func.action) {
1443                 case LFUN_BUFFER_EXPORT: {
1444                         bool const tmp = doExport(to_utf8(func.argument()), false);
1445                         if (result)
1446                                 *result = tmp;
1447                         break;
1448                 }
1449
1450                 default:
1451                         dispatched = false;
1452         }
1453         return dispatched;
1454 }
1455
1456
1457 void Buffer::changeLanguage(Language const * from, Language const * to)
1458 {
1459         BOOST_ASSERT(from);
1460         BOOST_ASSERT(to);
1461
1462         for_each(par_iterator_begin(),
1463                  par_iterator_end(),
1464                  bind(&Paragraph::changeLanguage, _1, params(), from, to));
1465 }
1466
1467
1468 bool Buffer::isMultiLingual() const
1469 {
1470         ParConstIterator end = par_iterator_end();
1471         for (ParConstIterator it = par_iterator_begin(); it != end; ++it)
1472                 if (it->isMultiLingual(params()))
1473                         return true;
1474
1475         return false;
1476 }
1477
1478
1479 DocIterator Buffer::getParFromID(int const id) const
1480 {
1481         if (id < 0) {
1482                 // John says this is called with id == -1 from undo
1483                 lyxerr << "getParFromID(), id: " << id << endl;
1484                 return doc_iterator_end(inset());
1485         }
1486
1487         for (DocIterator it = doc_iterator_begin(inset()); !it.atEnd(); it.forwardPar())
1488                 if (it.paragraph().id() == id)
1489                         return it;
1490
1491         return doc_iterator_end(inset());
1492 }
1493
1494
1495 bool Buffer::hasParWithID(int const id) const
1496 {
1497         return !getParFromID(id).atEnd();
1498 }
1499
1500
1501 ParIterator Buffer::par_iterator_begin()
1502 {
1503         return ParIterator(doc_iterator_begin(inset()));
1504 }
1505
1506
1507 ParIterator Buffer::par_iterator_end()
1508 {
1509         return ParIterator(doc_iterator_end(inset()));
1510 }
1511
1512
1513 ParConstIterator Buffer::par_iterator_begin() const
1514 {
1515         return lyx::par_const_iterator_begin(inset());
1516 }
1517
1518
1519 ParConstIterator Buffer::par_iterator_end() const
1520 {
1521         return lyx::par_const_iterator_end(inset());
1522 }
1523
1524
1525 Language const * Buffer::language() const
1526 {
1527         return params().language;
1528 }
1529
1530
1531 docstring const Buffer::B_(string const & l10n) const
1532 {
1533         return params().B_(l10n);
1534 }
1535
1536
1537 bool Buffer::isClean() const
1538 {
1539         return d->lyx_clean;
1540 }
1541
1542
1543 bool Buffer::isBakClean() const
1544 {
1545         return d->bak_clean;
1546 }
1547
1548
1549 bool Buffer::isExternallyModified(CheckMethod method) const
1550 {
1551         BOOST_ASSERT(d->filename.exists());
1552         // if method == timestamp, check timestamp before checksum
1553         return (method == checksum_method
1554                 || d->timestamp_ != d->filename.lastModified())
1555                 && d->checksum_ != d->filename.checksum();
1556 }
1557
1558
1559 void Buffer::saveCheckSum(FileName const & file) const
1560 {
1561         if (file.exists()) {
1562                 d->timestamp_ = file.lastModified();
1563                 d->checksum_ = file.checksum();
1564         } else {
1565                 // in the case of save to a new file.
1566                 d->timestamp_ = 0;
1567                 d->checksum_ = 0;
1568         }
1569 }
1570
1571
1572 void Buffer::markClean() const
1573 {
1574         if (!d->lyx_clean) {
1575                 d->lyx_clean = true;
1576                 updateTitles();
1577         }
1578         // if the .lyx file has been saved, we don't need an
1579         // autosave
1580         d->bak_clean = true;
1581 }
1582
1583
1584 void Buffer::markBakClean() const
1585 {
1586         d->bak_clean = true;
1587 }
1588
1589
1590 void Buffer::setUnnamed(bool flag)
1591 {
1592         d->unnamed = flag;
1593 }
1594
1595
1596 bool Buffer::isUnnamed() const
1597 {
1598         return d->unnamed;
1599 }
1600
1601
1602 // FIXME: this function should be moved to buffer_pimpl.C
1603 void Buffer::markDirty()
1604 {
1605         if (d->lyx_clean) {
1606                 d->lyx_clean = false;
1607                 updateTitles();
1608         }
1609         d->bak_clean = false;
1610
1611         DepClean::iterator it = d->dep_clean.begin();
1612         DepClean::const_iterator const end = d->dep_clean.end();
1613
1614         for (; it != end; ++it)
1615                 it->second = false;
1616 }
1617
1618
1619 FileName Buffer::fileName() const
1620 {
1621         return d->filename;
1622 }
1623
1624
1625 string Buffer::absFileName() const
1626 {
1627         return d->filename.absFilename();
1628 }
1629
1630
1631 string Buffer::filePath() const
1632 {
1633         return d->filename.onlyPath().absFilename() + "/";
1634 }
1635
1636
1637 bool Buffer::isReadonly() const
1638 {
1639         return d->read_only;
1640 }
1641
1642
1643 void Buffer::setParent(Buffer const * buffer)
1644 {
1645         // Avoids recursive include.
1646         d->parent_buffer = buffer == this ? 0 : buffer;
1647         updateMacros();
1648 }
1649
1650
1651 Buffer const * Buffer::parent()
1652 {
1653         return d->parent_buffer;
1654 }
1655
1656
1657 Buffer const * Buffer::masterBuffer() const
1658 {
1659         if (!d->parent_buffer)
1660                 return this;
1661
1662         return d->parent_buffer->masterBuffer();
1663 }
1664
1665
1666 template<typename M>
1667 typename M::iterator greatest_below(M & m, typename M::key_type const & x)
1668 {
1669         if (m.empty())
1670                 return m.end();
1671
1672         typename M::iterator it = m.lower_bound(x);
1673         if (it == m.begin())
1674                 return m.end();
1675
1676         it--;
1677         return it;
1678 }
1679
1680
1681 MacroData const * Buffer::getBufferMacro(docstring const & name,
1682                                          DocIterator const & pos) const
1683 {
1684         LYXERR(Debug::MACROS, "Searching for " << to_ascii(name) << " at " << pos);
1685
1686         // if paragraphs have no macro context set, pos will be empty
1687         if (pos.empty())
1688                 return 0;
1689
1690         // we haven't found anything yet
1691         DocIterator bestPos = par_iterator_begin();
1692         MacroData const * bestData = 0;
1693
1694         // find macro definitions for name
1695         Impl::NamePositionScopeMacroMap::iterator nameIt
1696         = d->macros.find(name);
1697         if (nameIt != d->macros.end()) {
1698                 // find last definition in front of pos or at pos itself
1699                 Impl::PositionScopeMacroMap::const_iterator it
1700                 = greatest_below(nameIt->second, pos);
1701                 if (it != nameIt->second.end()) {
1702                         while (true) {
1703                                 // scope ends behind pos?
1704                                 if (pos < it->second.first) {
1705                                         // Looks good, remember this. If there
1706                                         // is no external macro behind this,
1707                                         // we found the right one already.
1708                                         bestPos = it->first;
1709                                         bestData = &it->second.second;
1710                                         break;
1711                                 }
1712
1713                                 // try previous macro if there is one
1714                                 if (it == nameIt->second.begin())
1715                                         break;
1716                                 it--;
1717                         }
1718                 }
1719         }
1720
1721         // find macros in included files
1722         Impl::PositionScopeBufferMap::const_iterator it
1723         = greatest_below(d->position_to_children, pos);
1724         if (it == d->position_to_children.end())
1725                 // no children before
1726                 return bestData;
1727
1728         while (true) {
1729                 // do we know something better (i.e. later) already?
1730                 if (it->first < bestPos )
1731                         break;
1732
1733                 // scope ends behind pos?
1734                 if (pos < it->second.first) {
1735                         // look for macro in external file
1736                         d->macro_lock = true;
1737                         MacroData const * data
1738                         = it->second.second->getMacro(name, false);
1739                         d->macro_lock = false;
1740                         if (data) {
1741                                 bestPos = it->first;
1742                                 bestData = data;
1743                                 break;
1744                         }
1745                 }
1746
1747                 // try previous file if there is one
1748                 if (it == d->position_to_children.begin())
1749                         break;
1750                 --it;
1751         }
1752
1753         // return the best macro we have found
1754         return bestData;
1755 }
1756
1757
1758 MacroData const * Buffer::getMacro(docstring const & name,
1759         DocIterator const & pos, bool global) const
1760 {
1761         if (d->macro_lock)
1762                 return 0;
1763
1764         // query buffer macros
1765         MacroData const * data = getBufferMacro(name, pos);
1766         if (data != 0)
1767                 return data;
1768
1769         // If there is a master buffer, query that
1770         if (d->parent_buffer) {
1771                 d->macro_lock = true;
1772                 MacroData const * macro = d->parent_buffer->getMacro(
1773                         name, *this, false);
1774                 d->macro_lock = false;
1775                 if (macro)
1776                         return macro;
1777         }
1778
1779         if (global) {
1780                 data = MacroTable::globalMacros().get(name);
1781                 if (data != 0)
1782                         return data;
1783         }
1784
1785         return 0;
1786 }
1787
1788
1789 MacroData const * Buffer::getMacro(docstring const & name, bool global) const
1790 {
1791         // set scope end behind the last paragraph
1792         DocIterator scope = par_iterator_begin();
1793         scope.pit() = scope.lastpit() + 1;
1794
1795         return getMacro(name, scope, global);
1796 }
1797
1798
1799 MacroData const * Buffer::getMacro(docstring const & name,
1800         Buffer const & child, bool global) const
1801 {
1802         // look where the child buffer is included first
1803         Impl::BufferPositionMap::iterator it = d->children_positions.find(&child);
1804         if (it == d->children_positions.end())
1805                 return 0;
1806
1807         // check for macros at the inclusion position
1808         return getMacro(name, it->second, global);
1809 }
1810
1811
1812 void Buffer::updateEnvironmentMacros(DocIterator & it, pit_type lastpit,
1813         DocIterator & scope) const
1814 {
1815         Paragraph & par = it.paragraph();
1816         depth_type depth = par.params().depth();
1817         Length const & leftIndent = par.params().leftIndent();
1818
1819         // look for macros in each paragraph
1820         while (it.pit() <= lastpit) {
1821                 Paragraph & par = it.paragraph();
1822
1823                 // increased depth?
1824                 if ((par.params().depth() > depth
1825                         || par.params().leftIndent() != leftIndent)
1826                     && par.layout().isEnvironment()) {
1827                         updateBlockMacros(it, scope);
1828                         continue;
1829                 }
1830
1831                 // iterate over the insets of the current paragraph
1832                 InsetList const & insets = par.insetList();
1833                 InsetList::const_iterator iit = insets.begin();
1834                 InsetList::const_iterator end = insets.end();
1835                 for (; iit != end; ++iit) {
1836                         it.pos() = iit->pos;
1837
1838                         // is it a nested text inset?
1839                         if (iit->inset->asInsetText()) {
1840                                 // Inset needs its own scope?
1841                                 InsetText const * itext
1842                                 = iit->inset->asInsetText();
1843                                 bool newScope = itext->isMacroScope();
1844
1845                                 // scope which ends just behind the inset
1846                                 DocIterator insetScope = it;
1847                                 ++insetScope.pos();
1848
1849                                 // collect macros in inset
1850                                 it.push_back(CursorSlice(*iit->inset));
1851                                 updateInsetMacros(it, newScope ? insetScope : scope);
1852                                 it.pop_back();
1853                                 continue;
1854                         }
1855
1856                         // is it an external file?
1857                         if (iit->inset->lyxCode() == INCLUDE_CODE) {
1858                                 // get buffer of external file
1859                                 InsetCommand const & inset
1860                                         = static_cast<InsetCommand const &>(*iit->inset);
1861                                 InsetCommandParams const & ip = inset.params();
1862                                 d->macro_lock = true;
1863                                 Buffer * child = loadIfNeeded(*this, ip);
1864                                 d->macro_lock = false;
1865                                 if (!child)
1866                                         continue;
1867
1868                                 // register its position, but only when it is
1869                                 // included first in the buffer
1870                                 if (d->children_positions.find(child)
1871                                         == d->children_positions.end())
1872                                         d->children_positions[child] = it;
1873
1874                                 // register child with its scope
1875                                 d->position_to_children[it] = Impl::ScopeBuffer(scope, child);
1876                                 continue;
1877                         }
1878
1879                         if (iit->inset->lyxCode() != MATHMACRO_CODE)
1880                                 continue;
1881
1882                         // get macro data
1883                         MathMacroTemplate & macroTemplate
1884                         = static_cast<MathMacroTemplate &>(*iit->inset);
1885                         MacroContext mc(*this, it);
1886                         macroTemplate.updateToContext(mc);
1887
1888                         // valid?
1889                         bool valid = macroTemplate.validMacro();
1890                         // FIXME: Should be fixNameAndCheckIfValid() in fact,
1891                         // then the BufferView's cursor will be invalid in
1892                         // some cases which leads to crashes.
1893                         if (!valid)
1894                                 continue;
1895
1896                         // register macro
1897                         d->macros[macroTemplate.name()][it] =
1898                                 Impl::ScopeMacro(scope, MacroData(*this, it));
1899                 }
1900
1901                 // next paragraph
1902                 it.pit()++;
1903                 it.pos() = 0;
1904         }
1905 }
1906
1907
1908 void Buffer::updateBlockMacros(DocIterator & it, DocIterator & scope) const
1909 {
1910         Paragraph & par = it.paragraph();
1911
1912         // set scope for macros in this paragraph:
1913         // * either the "old" outer scope
1914         // * or the scope ending after the environment
1915         if (par.layout().isEnvironment()) {
1916                 // find end of environment block,
1917                 DocIterator envEnd = it;
1918                 pit_type n = it.lastpit() + 1;
1919                 depth_type depth = par.params().depth();
1920                 Length const & length = par.params().leftIndent();
1921                 // looping through the paragraph, basically until
1922                 // the layout changes or the depth gets smaller.
1923                 // (the logic of output_latex.cpp's TeXEnvironment)
1924                 do {
1925                         envEnd.pit()++;
1926                         if (envEnd.pit() == n)
1927                                 break;
1928                 } while (par.layout() == envEnd.paragraph().layout()
1929                          || depth < envEnd.paragraph().params().depth()
1930                          || length != envEnd.paragraph().params().leftIndent());
1931
1932                 // collect macros from environment block
1933                 updateEnvironmentMacros(it, envEnd.pit() - 1, envEnd);
1934         } else {
1935                 // collect macros from paragraph
1936                 updateEnvironmentMacros(it, it.pit(), scope);
1937         }
1938 }
1939
1940
1941 void Buffer::updateInsetMacros(DocIterator & it, DocIterator & scope) const
1942 {
1943         // look for macros in each paragraph
1944         pit_type n = it.lastpit() + 1;
1945         while (it.pit() < n)
1946                 updateBlockMacros(it, scope);
1947 }
1948
1949
1950 void Buffer::updateMacros() const
1951 {
1952         if (d->macro_lock)
1953                 return;
1954
1955         LYXERR(Debug::MACROS, "updateMacro of " << d->filename.onlyFileName());
1956
1957         // start with empty table
1958         d->macros.clear();
1959         d->children_positions.clear();
1960         d->position_to_children.clear();
1961
1962         // Iterate over buffer, starting with first paragraph
1963         // The scope must be bigger than any lookup DocIterator
1964         // later. For the global lookup, lastpit+1 is used, hence
1965         // we use lastpit+2 here.
1966         DocIterator it = par_iterator_begin();
1967         DocIterator outerScope = it;
1968         outerScope.pit() = outerScope.lastpit() + 2;
1969         updateInsetMacros(it, outerScope);
1970 }
1971
1972
1973 void Buffer::updateMacroInstances() const
1974 {
1975         LYXERR(Debug::MACROS, "updateMacroInstances for "
1976                 << d->filename.onlyFileName());
1977         DocIterator it = doc_iterator_begin(inset());
1978         DocIterator end = doc_iterator_end(inset());
1979         for (; it != end; it.forwardPos()) {
1980                 // look for MathData cells in InsetMathNest insets
1981                 Inset * inset = it.nextInset();
1982                 if (!inset)
1983                         continue;
1984
1985                 InsetMath * minset = inset->asInsetMath();
1986                 if (!minset)
1987                         continue;
1988
1989                 // update macro in all cells of the InsetMathNest
1990                 DocIterator::idx_type n = minset->nargs();
1991                 MacroContext mc = MacroContext(*this, it);
1992                 for (DocIterator::idx_type i = 0; i < n; ++i) {
1993                         MathData & data = minset->cell(i);
1994                         data.updateMacros(0, mc);
1995                 }
1996         }
1997 }
1998
1999
2000 void Buffer::listMacroNames(MacroNameSet & macros) const
2001 {
2002         if (d->macro_lock)
2003                 return;
2004
2005         d->macro_lock = true;
2006
2007         // loop over macro names
2008         Impl::NamePositionScopeMacroMap::iterator nameIt = d->macros.begin();
2009         Impl::NamePositionScopeMacroMap::iterator nameEnd = d->macros.end();
2010         for (; nameIt != nameEnd; ++nameIt)
2011                 macros.insert(nameIt->first);
2012
2013         // loop over children
2014         Impl::BufferPositionMap::iterator it = d->children_positions.begin();
2015         Impl::BufferPositionMap::iterator end = d->children_positions.end();
2016         for (; it != end; ++it)
2017                 it->first->listMacroNames(macros);
2018
2019         // call parent
2020         if (d->parent_buffer)
2021                 d->parent_buffer->listMacroNames(macros);
2022
2023         d->macro_lock = false;
2024 }
2025
2026
2027 void Buffer::writeParentMacros(odocstream & os) const
2028 {
2029         if (!d->parent_buffer)
2030                 return;
2031
2032         // collect macro names
2033         MacroNameSet names;
2034         d->parent_buffer->listMacroNames(names);
2035
2036         // resolve and output them
2037         MacroNameSet::iterator it = names.begin();
2038         MacroNameSet::iterator end = names.end();
2039         for (; it != end; ++it) {
2040                 // defined?
2041                 MacroData const * data =
2042                 d->parent_buffer->getMacro(*it, *this, false);
2043                 if (data)
2044                         data->write(os, true);
2045         }
2046 }
2047
2048
2049 Buffer::References & Buffer::references(docstring const & label)
2050 {
2051         if (d->parent_buffer)
2052                 return const_cast<Buffer *>(masterBuffer())->references(label);
2053
2054         RefCache::iterator it = d->ref_cache_.find(label);
2055         if (it != d->ref_cache_.end())
2056                 return it->second.second;
2057
2058         static InsetLabel const * dummy_il = 0;
2059         static References const dummy_refs;
2060         it = d->ref_cache_.insert(
2061                 make_pair(label, make_pair(dummy_il, dummy_refs))).first;
2062         return it->second.second;
2063 }
2064
2065
2066 Buffer::References const & Buffer::references(docstring const & label) const
2067 {
2068         return const_cast<Buffer *>(this)->references(label);
2069 }
2070
2071
2072 void Buffer::setInsetLabel(docstring const & label, InsetLabel const * il)
2073 {
2074         masterBuffer()->d->ref_cache_[label].first = il;
2075 }
2076
2077
2078 InsetLabel const * Buffer::insetLabel(docstring const & label) const
2079 {
2080         return masterBuffer()->d->ref_cache_[label].first;
2081 }
2082
2083
2084 void Buffer::clearReferenceCache() const
2085 {
2086         if (!d->parent_buffer)
2087                 d->ref_cache_.clear();
2088 }
2089
2090
2091 void Buffer::changeRefsIfUnique(docstring const & from, docstring const & to,
2092         InsetCode code)
2093 {
2094         //FIXME: This does not work for child documents yet.
2095         BOOST_ASSERT(code == CITE_CODE);
2096         // Check if the label 'from' appears more than once
2097         vector<docstring> labels;
2098         string paramName;
2099         BiblioInfo keys;
2100         keys.fillWithBibKeys(this);
2101         BiblioInfo::const_iterator bit  = keys.begin();
2102         BiblioInfo::const_iterator bend = keys.end();
2103
2104         for (; bit != bend; ++bit)
2105                 // FIXME UNICODE
2106                 labels.push_back(bit->first);
2107         paramName = "key";
2108
2109         if (count(labels.begin(), labels.end(), from) > 1)
2110                 return;
2111
2112         for (InsetIterator it = inset_iterator_begin(inset()); it; ++it) {
2113                 if (it->lyxCode() == code) {
2114                         InsetCommand & inset = static_cast<InsetCommand &>(*it);
2115                         docstring const oldValue = inset.getParam(paramName);
2116                         if (oldValue == from)
2117                                 inset.setParam(paramName, to);
2118                 }
2119         }
2120 }
2121
2122
2123 void Buffer::getSourceCode(odocstream & os, pit_type par_begin,
2124         pit_type par_end, bool full_source)
2125 {
2126         OutputParams runparams(&params().encoding());
2127         runparams.nice = true;
2128         runparams.flavor = OutputParams::LATEX;
2129         runparams.linelen = lyxrc.plaintext_linelen;
2130         // No side effect of file copying and image conversion
2131         runparams.dryrun = true;
2132
2133         d->texrow.reset();
2134         if (full_source) {
2135                 os << "% " << _("Preview source code") << "\n\n";
2136                 d->texrow.newline();
2137                 d->texrow.newline();
2138                 if (isLatex())
2139                         writeLaTeXSource(os, filePath(), runparams, true, true);
2140                 else
2141                         writeDocBookSource(os, absFileName(), runparams, false);
2142         } else {
2143                 runparams.par_begin = par_begin;
2144                 runparams.par_end = par_end;
2145                 if (par_begin + 1 == par_end) {
2146                         os << "% "
2147                            << bformat(_("Preview source code for paragraph %1$d"), par_begin)
2148                            << "\n\n";
2149                 } else {
2150                         os << "% "
2151                            << bformat(_("Preview source code from paragraph %1$s to %2$s"),
2152                                         convert<docstring>(par_begin),
2153                                         convert<docstring>(par_end - 1))
2154                            << "\n\n";
2155                 }
2156                 d->texrow.newline();
2157                 d->texrow.newline();
2158                 // output paragraphs
2159                 if (isLatex())
2160                         latexParagraphs(*this, text(), os, d->texrow, runparams);
2161                 else
2162                         // DocBook
2163                         docbookParagraphs(paragraphs(), *this, os, runparams);
2164         }
2165 }
2166
2167
2168 ErrorList & Buffer::errorList(string const & type) const
2169 {
2170         static ErrorList emptyErrorList;
2171         map<string, ErrorList>::iterator I = d->errorLists.find(type);
2172         if (I == d->errorLists.end())
2173                 return emptyErrorList;
2174
2175         return I->second;
2176 }
2177
2178
2179 void Buffer::structureChanged() const
2180 {
2181         if (gui_)
2182                 gui_->structureChanged();
2183 }
2184
2185
2186 void Buffer::errors(string const & err) const
2187 {
2188         if (gui_)
2189                 gui_->errors(err);
2190 }
2191
2192
2193 void Buffer::message(docstring const & msg) const
2194 {
2195         if (gui_)
2196                 gui_->message(msg);
2197 }
2198
2199
2200 void Buffer::setBusy(bool on) const
2201 {
2202         if (gui_)
2203                 gui_->setBusy(on);
2204 }
2205
2206
2207 void Buffer::setReadOnly(bool on) const
2208 {
2209         if (d->wa_)
2210                 d->wa_->setReadOnly(on);
2211 }
2212
2213
2214 void Buffer::updateTitles() const
2215 {
2216         if (d->wa_)
2217                 d->wa_->updateTitles();
2218 }
2219
2220
2221 void Buffer::resetAutosaveTimers() const
2222 {
2223         if (gui_)
2224                 gui_->resetAutosaveTimers();
2225 }
2226
2227
2228 void Buffer::setGuiDelegate(frontend::GuiBufferDelegate * gui)
2229 {
2230         gui_ = gui;
2231 }
2232
2233
2234
2235 namespace {
2236
2237 class AutoSaveBuffer : public ForkedProcess {
2238 public:
2239         ///
2240         AutoSaveBuffer(Buffer const & buffer, FileName const & fname)
2241                 : buffer_(buffer), fname_(fname) {}
2242         ///
2243         virtual boost::shared_ptr<ForkedProcess> clone() const
2244         {
2245                 return boost::shared_ptr<ForkedProcess>(new AutoSaveBuffer(*this));
2246         }
2247         ///
2248         int start()
2249         {
2250                 command_ = to_utf8(bformat(_("Auto-saving %1$s"),
2251                                                  from_utf8(fname_.absFilename())));
2252                 return run(DontWait);
2253         }
2254 private:
2255         ///
2256         virtual int generateChild();
2257         ///
2258         Buffer const & buffer_;
2259         FileName fname_;
2260 };
2261
2262
2263 int AutoSaveBuffer::generateChild()
2264 {
2265         // tmp_ret will be located (usually) in /tmp
2266         // will that be a problem?
2267         // Note that this calls ForkedCalls::fork(), so it's
2268         // ok cross-platform.
2269         pid_t const pid = fork();
2270         // If you want to debug the autosave
2271         // you should set pid to -1, and comment out the fork.
2272         if (pid != 0 && pid != -1)
2273                 return pid;
2274
2275         // pid = -1 signifies that lyx was unable
2276         // to fork. But we will do the save
2277         // anyway.
2278         bool failed = false;
2279         FileName const tmp_ret = FileName::tempName("lyxauto");
2280         if (!tmp_ret.empty()) {
2281                 buffer_.writeFile(tmp_ret);
2282                 // assume successful write of tmp_ret
2283                 if (!tmp_ret.moveTo(fname_))
2284                         failed = true;
2285         } else
2286                 failed = true;
2287
2288         if (failed) {
2289                 // failed to write/rename tmp_ret so try writing direct
2290                 if (!buffer_.writeFile(fname_)) {
2291                         // It is dangerous to do this in the child,
2292                         // but safe in the parent, so...
2293                         if (pid == -1) // emit message signal.
2294                                 buffer_.message(_("Autosave failed!"));
2295                 }
2296         }
2297
2298         if (pid == 0) // we are the child so...
2299                 _exit(0);
2300
2301         return pid;
2302 }
2303
2304 } // namespace anon
2305
2306
2307 // Perfect target for a thread...
2308 void Buffer::autoSave() const
2309 {
2310         if (isBakClean() || isReadonly()) {
2311                 // We don't save now, but we'll try again later
2312                 resetAutosaveTimers();
2313                 return;
2314         }
2315
2316         // emit message signal.
2317         message(_("Autosaving current document..."));
2318
2319         // create autosave filename
2320         string fname = filePath();
2321         fname += '#';
2322         fname += d->filename.onlyFileName();
2323         fname += '#';
2324
2325         AutoSaveBuffer autosave(*this, FileName(fname));
2326         autosave.start();
2327
2328         markBakClean();
2329         resetAutosaveTimers();
2330 }
2331
2332
2333 string Buffer::bufferFormat() const
2334 {
2335         if (isDocBook())
2336                 return "docbook";
2337         if (isLiterate())
2338                 return "literate";
2339         return "latex";
2340 }
2341
2342
2343 bool Buffer::doExport(string const & format, bool put_in_tempdir,
2344         string & result_file) const
2345 {
2346         string backend_format;
2347         OutputParams runparams(&params().encoding());
2348         runparams.flavor = OutputParams::LATEX;
2349         runparams.linelen = lyxrc.plaintext_linelen;
2350         vector<string> backs = backends();
2351         if (find(backs.begin(), backs.end(), format) == backs.end()) {
2352                 // Get shortest path to format
2353                 Graph::EdgePath path;
2354                 for (vector<string>::const_iterator it = backs.begin();
2355                      it != backs.end(); ++it) {
2356                         Graph::EdgePath p = theConverters().getPath(*it, format);
2357                         if (!p.empty() && (path.empty() || p.size() < path.size())) {
2358                                 backend_format = *it;
2359                                 path = p;
2360                         }
2361                 }
2362                 if (!path.empty())
2363                         runparams.flavor = theConverters().getFlavor(path);
2364                 else {
2365                         Alert::error(_("Couldn't export file"),
2366                                 bformat(_("No information for exporting the format %1$s."),
2367                                    formats.prettyName(format)));
2368                         return false;
2369                 }
2370         } else {
2371                 backend_format = format;
2372                 // FIXME: Don't hardcode format names here, but use a flag
2373                 if (backend_format == "pdflatex")
2374                         runparams.flavor = OutputParams::PDFLATEX;
2375         }
2376
2377         string filename = latexName(false);
2378         filename = addName(temppath(), filename);
2379         filename = changeExtension(filename,
2380                                    formats.extension(backend_format));
2381
2382         // fix macros
2383         updateMacroInstances();
2384
2385         // Plain text backend
2386         if (backend_format == "text")
2387                 writePlaintextFile(*this, FileName(filename), runparams);
2388         // no backend
2389         else if (backend_format == "lyx")
2390                 writeFile(FileName(filename));
2391         // Docbook backend
2392         else if (isDocBook()) {
2393                 runparams.nice = !put_in_tempdir;
2394                 makeDocBookFile(FileName(filename), runparams);
2395         }
2396         // LaTeX backend
2397         else if (backend_format == format) {
2398                 runparams.nice = true;
2399                 if (!makeLaTeXFile(FileName(filename), string(), runparams))
2400                         return false;
2401         } else if (!lyxrc.tex_allows_spaces
2402                    && contains(filePath(), ' ')) {
2403                 Alert::error(_("File name error"),
2404                            _("The directory path to the document cannot contain spaces."));
2405                 return false;
2406         } else {
2407                 runparams.nice = false;
2408                 if (!makeLaTeXFile(FileName(filename), filePath(), runparams))
2409                         return false;
2410         }
2411
2412         string const error_type = (format == "program")
2413                 ? "Build" : bufferFormat();
2414         string const ext = formats.extension(format);
2415         FileName const tmp_result_file(changeExtension(filename, ext));
2416         bool const success = theConverters().convert(this, FileName(filename),
2417                 tmp_result_file, FileName(absFileName()), backend_format, format,
2418                 errorList(error_type));
2419         // Emit the signal to show the error list.
2420         if (format != backend_format)
2421                 errors(error_type);
2422         if (!success)
2423                 return false;
2424
2425         if (put_in_tempdir) {
2426                 result_file = tmp_result_file.absFilename();
2427                 return true;
2428         }
2429
2430         result_file = changeExtension(absFileName(), ext);
2431         // We need to copy referenced files (e. g. included graphics
2432         // if format == "dvi") to the result dir.
2433         vector<ExportedFile> const files =
2434                 runparams.exportdata->externalFiles(format);
2435         string const dest = onlyPath(result_file);
2436         CopyStatus status = SUCCESS;
2437         for (vector<ExportedFile>::const_iterator it = files.begin();
2438                 it != files.end() && status != CANCEL; ++it) {
2439                 string const fmt = formats.getFormatFromFile(it->sourceName);
2440                 status = copyFile(fmt, it->sourceName,
2441                         makeAbsPath(it->exportName, dest),
2442                         it->exportName, status == FORCE);
2443         }
2444         if (status == CANCEL) {
2445                 message(_("Document export cancelled."));
2446         } else if (tmp_result_file.exists()) {
2447                 // Finally copy the main file
2448                 status = copyFile(format, tmp_result_file,
2449                         FileName(result_file), result_file,
2450                         status == FORCE);
2451                 message(bformat(_("Document exported as %1$s "
2452                         "to file `%2$s'"),
2453                         formats.prettyName(format),
2454                         makeDisplayPath(result_file)));
2455         } else {
2456                 // This must be a dummy converter like fax (bug 1888)
2457                 message(bformat(_("Document exported as %1$s"),
2458                         formats.prettyName(format)));
2459         }
2460
2461         return true;
2462 }
2463
2464
2465 bool Buffer::doExport(string const & format, bool put_in_tempdir) const
2466 {
2467         string result_file;
2468         return doExport(format, put_in_tempdir, result_file);
2469 }
2470
2471
2472 bool Buffer::preview(string const & format) const
2473 {
2474         string result_file;
2475         if (!doExport(format, true, result_file))
2476                 return false;
2477         return formats.view(*this, FileName(result_file), format);
2478 }
2479
2480
2481 bool Buffer::isExportable(string const & format) const
2482 {
2483         vector<string> backs = backends();
2484         for (vector<string>::const_iterator it = backs.begin();
2485              it != backs.end(); ++it)
2486                 if (theConverters().isReachable(*it, format))
2487                         return true;
2488         return false;
2489 }
2490
2491
2492 vector<Format const *> Buffer::exportableFormats(bool only_viewable) const
2493 {
2494         vector<string> backs = backends();
2495         vector<Format const *> result =
2496                 theConverters().getReachable(backs[0], only_viewable, true);
2497         for (vector<string>::const_iterator it = backs.begin() + 1;
2498              it != backs.end(); ++it) {
2499                 vector<Format const *>  r =
2500                         theConverters().getReachable(*it, only_viewable, false);
2501                 result.insert(result.end(), r.begin(), r.end());
2502         }
2503         return result;
2504 }
2505
2506
2507 vector<string> Buffer::backends() const
2508 {
2509         vector<string> v;
2510         if (params().baseClass()->isTeXClassAvailable()) {
2511                 v.push_back(bufferFormat());
2512                 // FIXME: Don't hardcode format names here, but use a flag
2513                 if (v.back() == "latex")
2514                         v.push_back("pdflatex");
2515         }
2516         v.push_back("text");
2517         v.push_back("lyx");
2518         return v;
2519 }
2520
2521
2522 bool Buffer::readFileHelper(FileName const & s)
2523 {
2524         // File information about normal file
2525         if (!s.exists()) {
2526                 docstring const file = makeDisplayPath(s.absFilename(), 50);
2527                 docstring text = bformat(_("The specified document\n%1$s"
2528                                                      "\ncould not be read."), file);
2529                 Alert::error(_("Could not read document"), text);
2530                 return false;
2531         }
2532
2533         // Check if emergency save file exists and is newer.
2534         FileName const e(s.absFilename() + ".emergency");
2535
2536         if (e.exists() && s.exists() && e.lastModified() > s.lastModified()) {
2537                 docstring const file = makeDisplayPath(s.absFilename(), 20);
2538                 docstring const text =
2539                         bformat(_("An emergency save of the document "
2540                                   "%1$s exists.\n\n"
2541                                                "Recover emergency save?"), file);
2542                 switch (Alert::prompt(_("Load emergency save?"), text, 0, 2,
2543                                       _("&Recover"),  _("&Load Original"),
2544                                       _("&Cancel")))
2545                 {
2546                 case 0:
2547                         // the file is not saved if we load the emergency file.
2548                         markDirty();
2549                         return readFile(e);
2550                 case 1:
2551                         break;
2552                 default:
2553                         return false;
2554                 }
2555         }
2556
2557         // Now check if autosave file is newer.
2558         FileName const a(onlyPath(s.absFilename()) + '#' + onlyFilename(s.absFilename()) + '#');
2559
2560         if (a.exists() && s.exists() && a.lastModified() > s.lastModified()) {
2561                 docstring const file = makeDisplayPath(s.absFilename(), 20);
2562                 docstring const text =
2563                         bformat(_("The backup of the document "
2564                                   "%1$s is newer.\n\nLoad the "
2565                                                "backup instead?"), file);
2566                 switch (Alert::prompt(_("Load backup?"), text, 0, 2,
2567                                       _("&Load backup"), _("Load &original"),
2568                                       _("&Cancel") ))
2569                 {
2570                 case 0:
2571                         // the file is not saved if we load the autosave file.
2572                         markDirty();
2573                         return readFile(a);
2574                 case 1:
2575                         // Here we delete the autosave
2576                         a.removeFile();
2577                         break;
2578                 default:
2579                         return false;
2580                 }
2581         }
2582         return readFile(s);
2583 }
2584
2585
2586 bool Buffer::loadLyXFile(FileName const & s)
2587 {
2588         if (s.isReadableFile()) {
2589                 if (readFileHelper(s)) {
2590                         lyxvc().file_found_hook(s);
2591                         if (!s.isWritable())
2592                                 setReadonly(true);
2593                         return true;
2594                 }
2595         } else {
2596                 docstring const file = makeDisplayPath(s.absFilename(), 20);
2597                 // Here we probably should run
2598                 if (LyXVC::file_not_found_hook(s)) {
2599                         docstring const text =
2600                                 bformat(_("Do you want to retrieve the document"
2601                                                        " %1$s from version control?"), file);
2602                         int const ret = Alert::prompt(_("Retrieve from version control?"),
2603                                 text, 0, 1, _("&Retrieve"), _("&Cancel"));
2604
2605                         if (ret == 0) {
2606                                 // How can we know _how_ to do the checkout?
2607                                 // With the current VC support it has to be,
2608                                 // a RCS file since CVS do not have special ,v files.
2609                                 RCS::retrieve(s);
2610                                 return loadLyXFile(s);
2611                         }
2612                 }
2613         }
2614         return false;
2615 }
2616
2617
2618 void Buffer::bufferErrors(TeXErrors const & terr, ErrorList & errorList) const
2619 {
2620         TeXErrors::Errors::const_iterator cit = terr.begin();
2621         TeXErrors::Errors::const_iterator end = terr.end();
2622
2623         for (; cit != end; ++cit) {
2624                 int id_start = -1;
2625                 int pos_start = -1;
2626                 int errorRow = cit->error_in_line;
2627                 bool found = d->texrow.getIdFromRow(errorRow, id_start,
2628                                                        pos_start);
2629                 int id_end = -1;
2630                 int pos_end = -1;
2631                 do {
2632                         ++errorRow;
2633                         found = d->texrow.getIdFromRow(errorRow, id_end, pos_end);
2634                 } while (found && id_start == id_end && pos_start == pos_end);
2635
2636                 errorList.push_back(ErrorItem(cit->error_desc,
2637                         cit->error_text, id_start, pos_start, pos_end));
2638         }
2639 }
2640
2641 } // namespace lyx