src/LaTeX.C

   1 /* This file is part of
   2  * ======================================================
   3  *
   4  *           LyX, The Document Processor
   5  *           Copyright 1995 Matthias Ettrich
   6  *           Copyright 1995-2001 The LyX Team.
   7  *
   8  *           This file is Copyright 1996-2001
   9  *           Lars Gullik Bjønnes
  10  *
  11  * ======================================================
  12  */
  13
  14 #include <config.h>
  15
  16 #ifdef __GNUG__
  17 #pragma implementation
  18 #endif
  19 #include <fstream>
  20
  21 #include "LaTeX.h"
  22 #include "bufferlist.h"
  23 #include "gettext.h"
  24 #include "lyxfunc.h"
  25 #include "debug.h"
  26 #include "support/filetools.h"
  27 #include "support/FileInfo.h"
  28 #include "support/LRegex.h"
  29 #include "support/LSubstring.h"
  30 #include "support/lstrings.h"
  31 #include "support/lyxlib.h"
  32 #include "support/systemcall.h"
  33 #include "support/os.h"
  34 #include "support/path.h"
  35
  36 using std::ifstream;
  37 using std::getline;
  38 using std::endl;
  39 using std::vector;
  40 using std::set;
  41
  42 // TODO: in no particular order
  43 // - get rid of the extern BufferList and the call to
  44 //   BufferList::updateIncludedTeXfiles, this should either
  45 //   be done before calling LaTeX::funcs or in a completely
  46 //   different way.
  47 // - the bibtex command options should be supported.
  48 // - the makeindex style files should be taken care of with
  49 //   the dependency mechanism.
  50 // - makeindex commandline options should be supported
  51 // - somewhere support viewing of bibtex and makeindex log files.
  52 // - we should perhaps also scan the bibtex log file
  53 // - we should perhaps also scan the bibtex log file
  54
  55 extern BufferList bufferlist;
  56
  57 /*
  58  * CLASS TEXERRORS
  59  */
  60
  61 void TeXErrors::insertError(int line, string const & error_desc,
  62                             string const & error_text)
  63 {
  64         Error newerr(line, error_desc, error_text);
  65         errors.push_back(newerr);
  66 }
  67
  68 /*
  69  * CLASS LaTeX
  70  */
  71
  72 LaTeX::LaTeX(string const & latex, string const & f, string const & p)
  73                 : cmd(latex), file(f), path(p)
  74 {
  75         num_errors = 0;
  76         depfile = file + ".dep";
  77         if (prefixIs(cmd, "pdf")) { // Do we use pdflatex ?
  78                 depfile += "-pdf";
  79                 output_file = ChangeExtension(file,".pdf");
  80         } else {
  81                 output_file = ChangeExtension(file,".dvi");
  82         }
  83 }
  84
  85
  86 void LaTeX::deleteFilesOnError() const
  87 {
  88         // currently just a dummy function.
  89
  90         // What files do we have to delete?
  91
  92         // This will at least make latex do all the runs
  93         lyx::unlink(depfile);
  94
  95         // but the reason for the error might be in a generated file...
  96
  97         string ofname = OnlyFilename(file);
  98
  99         // bibtex file
 100         string bbl = ChangeExtension(ofname, ".bbl");
 101         lyx::unlink(bbl);
 102
 103         // makeindex file
 104         string ind = ChangeExtension(ofname, ".ind");
 105         lyx::unlink(ind);
 106
 107         // Also remove the aux file
 108         string aux = ChangeExtension(ofname, ".aux");
 109         lyx::unlink(aux);
 110 }
 111
 112
 113 int LaTeX::run(TeXErrors & terr, LyXFunc * lfun)
 114         // We know that this function will only be run if the lyx buffer
 115         // has been changed. We also know that a newly written .tex file
 116         // is always different from the previous one because of the date
 117         // in it. However it seems safe to run latex (at least) on time each
 118         // time the .tex file changes.
 119 {
 120         int scanres = NO_ERRORS;
 121         unsigned int count = 0; // number of times run
 122         num_errors = 0; // just to make sure.
 123         const unsigned int MAX_RUN = 6;
 124         DepTable head; // empty head
 125         bool rerun = false; // rerun requested
 126
 127         // The class LaTeX does not know the temp path.
 128         bufferlist.updateIncludedTeXfiles(lyx::getcwd()); //GetCWD());
 129
 130         // Never write the depfile if an error was encountered.
 131
 132         // 0
 133         // first check if the file dependencies exist:
 134         //     ->If it does exist
 135         //             check if any of the files mentioned in it have
 136         //             changed (done using a checksum).
 137         //                 -> if changed:
 138         //                        run latex once and
 139         //                        remake the dependency file
 140         //                 -> if not changed:
 141         //                        just return there is nothing to do for us.
 142         //     ->if it doesn't exist
 143         //             make it and
 144         //             run latex once (we need to run latex once anyway) and
 145         //             remake the dependency file.
 146         //
 147
 148         FileInfo fi(depfile);
 149         bool had_depfile = fi.exist();
 150         bool run_bibtex = false;
 151         string aux_file = OnlyFilename(ChangeExtension(file, "aux"));
 152
 153         if (had_depfile) {
 154                 lyxerr[Debug::DEPEND] << "Dependency file exists" << endl;
 155                 // Read the dep file:
 156                 head.read(depfile);
 157                 // Update the checksums
 158                 head.update();
 159                 // Can't just check if anything has changed because it might have aborted
 160                 // on error last time... in which cas we need to re-run latex
 161                 // and collect the error messages (even if they are the same).
 162                 if (!FileInfo(output_file).exist()) {
 163                         lyxerr[Debug::DEPEND]
 164                                 << "re-running LaTeX because output file doesn't exist." << endl;
 165                 } else if (!head.sumchange()) {
 166                         lyxerr[Debug::DEPEND] << "return no_change" << endl;
 167                         return NO_CHANGE;
 168                 } else {
 169                         lyxerr[Debug::DEPEND]
 170                                 << "Dependency file has changed" << endl;
 171                 }
 172
 173                 if (head.extchanged(".bib") || head.extchanged(".bst"))
 174                         run_bibtex = true;
 175         } else
 176                 lyxerr[Debug::DEPEND]
 177                         << "Dependency file does not exist" << endl;
 178
 179         /// We scan the aux file even when had_depfile = false,
 180         /// because we can run pdflatex on the file after running latex on it,
 181         /// in which case we will not need to run bibtex again.
 182         vector<Aux_Info> bibtex_info_old;
 183         if (!run_bibtex)
 184                 bibtex_info_old = scanAuxFiles(aux_file);
 185
 186         ++count;
 187         lyxerr[Debug::LATEX] << "Run #" << count << endl;
 188         if (lfun) {
 189                 ostringstream str;
 190                 str << _("LaTeX run number") << ' ' << count;
 191                 lfun->dispatch(LFUN_MESSAGE, str.str().c_str());
 192         }
 193
 194         this->operator()();
 195         scanres = scanLogFile(terr);
 196         if (scanres & ERROR_RERUN) {
 197                 lyxerr[Debug::LATEX] << "Rerunning LaTeX" << endl;
 198                 this->operator()();
 199                 scanres = scanLogFile(terr);
 200         }
 201
 202         if (scanres & ERRORS) {
 203                 deleteFilesOnError();
 204                 return scanres; // return on error
 205         }
 206
 207         vector<Aux_Info> const bibtex_info = scanAuxFiles(aux_file);
 208         if (!run_bibtex && bibtex_info_old != bibtex_info)
 209                 run_bibtex = true;
 210
 211         // update the dependencies.
 212         deplog(head); // reads the latex log
 213         head.update();
 214
 215         // 0.5
 216         // At this point we must run external programs if needed.
 217         // makeindex will be run if a .idx file changed or was generated.
 218         // And if there were undefined citations or changes in references
 219         // the .aux file is checked for signs of bibtex. Bibtex is then run
 220         // if needed.
 221
 222         // run makeindex
 223         if (head.haschanged(OnlyFilename(ChangeExtension(file, ".idx")))) {
 224                 // no checks for now
 225                 lyxerr[Debug::LATEX] << "Running MakeIndex." << endl;
 226                 if (lfun) {
 227                         lfun->dispatch(LFUN_MESSAGE, _("Running MakeIndex."));
 228                 }
 229
 230                 rerun = runMakeIndex(OnlyFilename(ChangeExtension(file, ".idx")));
 231         }
 232
 233         // run bibtex
 234         // if (scanres & UNDEF_CIT || scanres & RERUN || run_bibtex)
 235         if (scanres & UNDEF_CIT || run_bibtex) {
 236                 // Here we must scan the .aux file and look for
 237                 // "\bibdata" and/or "\bibstyle". If one of those
 238                 // tags is found -> run bibtex and set rerun = true;
 239                 // no checks for now
 240                 lyxerr[Debug::LATEX] << "Running BibTeX." << endl;
 241                 if (lfun) {
 242                         lfun->dispatch(LFUN_MESSAGE, _("Running BibTeX."));
 243                 }
 244
 245                 updateBibtexDependencies(head, bibtex_info);
 246                 rerun |= runBibTeX(bibtex_info);
 247         } else if (!had_depfile) {
 248                 /// If we run pdflatex on the file after running latex on it,
 249                 /// then we do not need to run bibtex, but we do need to
 250                 /// insert the .bib and .bst files into the .dep-pdf file.
 251                 updateBibtexDependencies(head, bibtex_info);
 252         }
 253
 254         // 1
 255         // we know on this point that latex has been run once (or we just
 256         // returned) and the question now is to decide if we need to run
 257         // it any more. This is done by asking if any of the files in the
 258         // dependency file has changed. (remember that the checksum for
 259         // a given file is reported to have changed if it just was created)
 260         //     -> if changed or rerun == true:
 261         //             run latex once more and
 262         //             update the dependency structure
 263         //     -> if not changed:
 264         //             we does nothing at this point
 265         //
 266         if (rerun || head.sumchange()) {
 267                 rerun = false;
 268                 ++count;
 269                 lyxerr[Debug::DEPEND]
 270                         << "Dep. file has changed or rerun requested" << endl;
 271                 lyxerr[Debug::LATEX]
 272                         << "Run #" << count << endl;
 273                 if (lfun) {
 274                         ostringstream str;
 275                         str << _("LaTeX run number") << ' ' << count;
 276                         lfun->dispatch(LFUN_MESSAGE, str.str().c_str());
 277                 }
 278
 279                 this->operator()();
 280                 scanres = scanLogFile(terr);
 281                 if (scanres & ERRORS) {
 282                         deleteFilesOnError();
 283                         return scanres; // return on error
 284                 }
 285
 286                 // update the depedencies
 287                 deplog(head); // reads the latex log
 288                 head.update();
 289         } else {
 290                 lyxerr[Debug::DEPEND] << "Dep. file has NOT changed" << endl;
 291         }
 292
 293         // 1.5
 294         // The inclusion of files generated by external programs like
 295         // makeindex or bibtex might have done changes to pagenumbereing,
 296         // etc. And because of this we must run the external programs
 297         // again to make sure everything is redone correctly.
 298         // Also there should be no need to run the external programs any
 299         // more after this.
 300
 301         // run makeindex if the <file>.idx has changed or was generated.
 302         if (head.haschanged(OnlyFilename(ChangeExtension(file, ".idx")))) {
 303                 // no checks for now
 304                 lyxerr[Debug::LATEX] << "Running MakeIndex." << endl;
 305                 if (lfun) {
 306                         lfun->dispatch(LFUN_MESSAGE, _("Running MakeIndex."));
 307                 }
 308
 309                 rerun = runMakeIndex(OnlyFilename(ChangeExtension(file, ".idx")));
 310         }
 311
 312         // 2
 313         // we will only run latex more if the log file asks for it.
 314         // or if the sumchange() is true.
 315         //     -> rerun asked for:
 316         //             run latex and
 317         //             remake the dependency file
 318         //             goto 2 or return if max runs are reached.
 319         //     -> rerun not asked for:
 320         //             just return (fall out of bottom of func)
 321         //
 322         while ((head.sumchange() || rerun || (scanres & RERUN))
 323                && count < MAX_RUN) {
 324                 // Yes rerun until message goes away, or until
 325                 // MAX_RUNS are reached.
 326                 rerun = false;
 327                 ++count;
 328                 lyxerr[Debug::LATEX] << "Run #" << count << endl;
 329                 if (lfun) {
 330                         ostringstream str;
 331                         str << _("LaTeX run number") << ' ' << count;
 332                         lfun->dispatch(LFUN_MESSAGE, str.str().c_str());
 333                 }
 334
 335                 this->operator()();
 336                 scanres = scanLogFile(terr);
 337                 if (scanres & ERRORS) {
 338                         deleteFilesOnError();
 339                         return scanres; // return on error
 340                 }
 341
 342                 // keep this updated
 343                 head.update();
 344         }
 345
 346         // Write the dependencies to file.
 347         head.write(depfile);
 348         lyxerr[Debug::LATEX] << "Done." << endl;
 349         return scanres;
 350 }
 351
 352
 353 int LaTeX::operator()()
 354 {
 355 #ifndef __EMX__
 356         string tmp = cmd + ' ' + QuoteName(file) + " > /dev/null";
 357 #else // cmd.exe (OS/2) causes SYS0003 error at "/dev/null"
 358         string tmp = cmd + ' ' + file + " > nul";
 359 #endif
 360         Systemcall one;
 361         return one.startscript(Systemcall::Wait, tmp);
 362 }
 363
 364
 365 bool LaTeX::runMakeIndex(string const & f)
 366 {
 367         lyxerr[Debug::LATEX] << "idx file has been made,"
 368                 " running makeindex on file "
 369                              <<  f << endl;
 370
 371         // It should be possible to set the switches for makeindex
 372         // sorting style and such. It would also be very convenient
 373         // to be able to make style files from within LyX. This has
 374         // to come for a later time. (0.13 perhaps?)
 375         string tmp = "makeindex -c -q ";
 376         tmp += f;
 377         Systemcall one;
 378         one.startscript(Systemcall::Wait, tmp);
 379         return true;
 380 }
 381
 382
 383 vector<Aux_Info> const
 384 LaTeX::scanAuxFiles(string const & file)
 385 {
 386         vector<Aux_Info> result;
 387
 388         result.push_back(scanAuxFile(file));
 389
 390         for (int i = 1; i < 1000; ++i) {
 391                 string file2 = ChangeExtension(file, "") + "." + tostr(i)
 392                         + ".aux";
 393                 FileInfo fi(file2);
 394                 if (!fi.exist())
 395                         break;
 396                 result.push_back(scanAuxFile(file2));
 397         }
 398         return result;
 399 }
 400
 401
 402 Aux_Info const LaTeX::scanAuxFile(string const & file)
 403 {
 404         Aux_Info result;
 405         result.aux_file = file;
 406         scanAuxFile(file, result);
 407         return result;
 408 }
 409
 410
 411 void LaTeX::scanAuxFile(string const & file, Aux_Info & aux_info)
 412 {
 413         lyxerr[Debug::LATEX] << "Scanning aux file: " << file << endl;
 414
 415         ifstream ifs(file.c_str());
 416         string token;
 417         LRegex reg1("\\\\citation\\{([^}]+)\\}");
 418         LRegex reg2("\\\\bibdata\\{([^}]+)\\}");
 419         LRegex reg3("\\\\bibstyle\\{([^}]+)\\}");
 420         LRegex reg4("\\\\@input\\{([^}]+)\\}");
 421
 422         while (getline(ifs, token)) {
 423                 token = strip(token, '\r');
 424                 if (reg1.exact_match(token)) {
 425                         LRegex::SubMatches const & sub = reg1.exec(token);
 426                         string data = LSubstring(token, sub[1].first,
 427                                                  sub[1].second);
 428                         while (!data.empty()) {
 429                                 string citation;
 430                                 data = split(data, citation, ',');
 431                                 lyxerr[Debug::LATEX] << "Citation: "
 432                                                      << citation << endl;
 433                                 aux_info.citations.insert(citation);
 434                         }
 435                 } else if (reg2.exact_match(token)) {
 436                         LRegex::SubMatches const & sub = reg2.exec(token);
 437                         string data = LSubstring(token, sub[1].first,
 438                                                  sub[1].second);
 439                         // data is now all the bib files separated by ','
 440                         // get them one by one and pass them to the helper
 441                         while (!data.empty()) {
 442                                 string database;
 443                                 data = split(data, database, ',');
 444                                 database = ChangeExtension(database, "bib");
 445                                 lyxerr[Debug::LATEX] << "Bibtex database: `"
 446                                                      << database << "'" << endl;
 447                                 aux_info.databases.insert(database);
 448                         }
 449                 } else if (reg3.exact_match(token)) {
 450                         LRegex::SubMatches const & sub = reg3.exec(token);
 451                         string style = LSubstring(token, sub[1].first,
 452                                                   sub[1].second);
 453                         // token is now the style file
 454                         // pass it to the helper
 455                         style = ChangeExtension(style, "bst");
 456                         lyxerr[Debug::LATEX] << "Bibtex style: `"
 457                                              << style << "'" << endl;
 458                         aux_info.styles.insert(style);
 459                 } else if (reg4.exact_match(token)) {
 460                         LRegex::SubMatches const & sub = reg4.exec(token);
 461                         string file2 = LSubstring(token, sub[1].first,
 462                                                   sub[1].second);
 463                         scanAuxFile(file2, aux_info);
 464                 }
 465         }
 466 }
 467
 468
 469 void LaTeX::updateBibtexDependencies(DepTable & dep,
 470                                      vector<Aux_Info> const & bibtex_info)
 471 {
 472         // Since a run of Bibtex mandates more latex runs it is ok to
 473         // remove all ".bib" and ".bst" files.
 474         dep.remove_files_with_extension(".bib");
 475         dep.remove_files_with_extension(".bst");
 476         //string aux = OnlyFilename(ChangeExtension(file, ".aux"));
 477
 478         for (vector<Aux_Info>::const_iterator it = bibtex_info.begin();
 479              it != bibtex_info.end(); ++it) {
 480                 for (set<string>::const_iterator it2 = it->databases.begin();
 481                      it2 != it->databases.end(); ++it2) {
 482                         string file = findtexfile(*it2, "bib");
 483                         if (!file.empty())
 484                                 dep.insert(file, true);
 485                 }
 486
 487                 for (set<string>::const_iterator it2 = it->styles.begin();
 488                      it2 != it->styles.end(); ++it2) {
 489                         string file = findtexfile(*it2, "bst");
 490                         if (!file.empty())
 491                                 dep.insert(file, true);
 492                 }
 493         }
 494 }
 495
 496
 497 bool LaTeX::runBibTeX(vector<Aux_Info> const & bibtex_info)
 498 {
 499         bool result = false;
 500         for (vector<Aux_Info>::const_iterator it = bibtex_info.begin();
 501              it != bibtex_info.end(); ++it) {
 502                 if (it->databases.empty())
 503                         continue;
 504                 result = true;
 505
 506                 string tmp = "bibtex ";
 507                 tmp += OnlyFilename(ChangeExtension(it->aux_file, string()));
 508                 Systemcall one;
 509                 one.startscript(Systemcall::Wait, tmp);
 510         }
 511         // Return whether bibtex was run
 512         return result;
 513 }
 514
 515
 516 int LaTeX::scanLogFile(TeXErrors & terr)
 517 {
 518         int last_line = -1;
 519         int line_count = 1;
 520         int retval = NO_ERRORS;
 521         string tmp = OnlyFilename(ChangeExtension(file, ".log"));
 522         lyxerr[Debug::LATEX] << "Log file: " << tmp << endl;
 523         ifstream ifs(tmp.c_str());
 524
 525         string token;
 526         while (getline(ifs, token)) {
 527                 lyxerr[Debug::LATEX] << "Log line: " << token << endl;
 528
 529                 if (token.empty())
 530                         continue;
 531
 532                 if (prefixIs(token, "LaTeX Warning:")) {
 533                         // Here shall we handle different
 534                         // types of warnings
 535                         retval |= LATEX_WARNING;
 536                         lyxerr[Debug::LATEX] << "LaTeX Warning." << endl;
 537                         if (contains(token, "Rerun to get cross-references")) {
 538                                 retval |= RERUN;
 539                                 lyxerr[Debug::LATEX]
 540                                         << "We should rerun." << endl;
 541                         } else if (contains(token, "Citation")
 542                                    && contains(token, "on page")
 543                                    && contains(token, "undefined")) {
 544                                 retval |= UNDEF_CIT;
 545                         }
 546                 } else if (prefixIs(token, "Package")) {
 547                         // Package warnings
 548                         retval |= PACKAGE_WARNING;
 549                         if (contains(token, "natbib Warning:")) {
 550                                 // Natbib warnings
 551                                 if (contains(token, "Citation")
 552                                     && contains(token, "on page")
 553                                     && contains(token, "undefined")) {
 554                                         retval |= UNDEF_CIT;
 555                                 }
 556                         } else if (contains(token, "run BibTeX")) {
 557                                 retval |= UNDEF_CIT;
 558                         } else if (contains(token, "Rerun LaTeX") ||
 559                                    contains(token, "Rerun to get")) {
 560                                 // at least longtable.sty and bibtopic.sty
 561                                 // might use this.
 562                                 lyxerr[Debug::LATEX]
 563                                         << "We should rerun." << endl;
 564                                 retval |= RERUN;
 565                         }
 566                 } else if (prefixIs(token, "(")) {
 567                         if (contains(token, "Rerun LaTeX") ||
 568                             contains(token, "Rerun to get")) {
 569                                 // Used by natbib
 570                                 lyxerr[Debug::LATEX]
 571                                         << "We should rerun." << endl;
 572                                 retval |= RERUN;
 573                         }
 574                 } else if (prefixIs(token, "! ")) {
 575                         // Ok, we have something that looks like a TeX Error
 576                         // but what do we really have.
 577
 578                         // Just get the error description:
 579                         string desc(token, 2);
 580                         if (contains(token, "LaTeX Error:"))
 581                                 retval |= LATEX_ERROR;
 582                         // get the next line
 583                         string tmp;
 584                         int count = 0;
 585                         do {
 586                                 if (!getline(ifs, tmp))
 587                                         break;
 588                                 if (++count > 10)
 589                                         break;
 590                         } while (!prefixIs(tmp, "l."));
 591                         if (prefixIs(tmp, "l.")) {
 592                                 // we have a latex error
 593                                 retval |=  TEX_ERROR;
 594                                 if (contains(desc, "Package babel Error: You haven't defined the language"))
 595                                         retval |= ERROR_RERUN;
 596                                 // get the line number:
 597                                 int line = 0;
 598                                 sscanf(tmp.c_str(), "l.%d", &line);
 599                                 // get the rest of the message:
 600                                 string errstr(tmp, tmp.find(' '));
 601                                 errstr += '\n';
 602                                 getline(ifs, tmp);
 603                                 while (!contains(errstr, "l.")
 604                                        && !tmp.empty()
 605                                        && !prefixIs(tmp, "! ")
 606                                        && !contains(tmp, "(job aborted")) {
 607                                         errstr += tmp;
 608                                         errstr += "\n";
 609                                         getline(ifs, tmp);
 610                                 }
 611                                 lyxerr[Debug::LATEX]
 612                                         << "line: " << line << '\n'
 613                                         << "Desc: " << desc << '\n'
 614                                         << "Text: " << errstr << endl;
 615                                 if (line == last_line)
 616                                         ++line_count;
 617                                 else {
 618                                         line_count = 1;
 619                                         last_line = line;
 620                                 }
 621                                 if (line_count <= 5) {
 622                                         terr.insertError(line, desc, errstr);
 623                                         ++num_errors;
 624                                 }
 625                         }
 626                 } else {
 627                         // information messages, TeX warnings and other
 628                         // warnings we have not caught earlier.
 629                         if (prefixIs(token, "Overfull ")) {
 630                                 retval |= TEX_WARNING;
 631                         } else if (prefixIs(token, "Underfull ")) {
 632                                 retval |= TEX_WARNING;
 633                         } else if (contains(token, "Rerun to get citations")) {
 634                                 // Natbib seems to use this.
 635                                 retval |= UNDEF_CIT;
 636                         } else if (contains(token, "No pages of output")) {
 637                                 // A dvi file was not created
 638                                 retval |= NO_OUTPUT;
 639                         } else if (contains(token, "That makes 100 errors")) {
 640                                 // More than 100 errors were reprted
 641                                 retval |= TOO_MANY_ERRORS;
 642                         }
 643                 }
 644         }
 645         lyxerr[Debug::LATEX] << "Log line: " << token << endl;
 646         return retval;
 647 }
 648
 649
 650 void LaTeX::deplog(DepTable & head)
 651 {
 652         // This function reads the LaTeX log file end extracts all the external
 653         // files used by the LaTeX run. The files are then entered into the
 654         // dependency file.
 655
 656         string const logfile = OnlyFilename(ChangeExtension(file, ".log"));
 657
 658         LRegex reg1("\\)* *\\(([^ )]+).*");
 659         LRegex reg2("File: ([^ ]+).*");
 660         LRegex reg3("No file ([^ ]+)\\..*");
 661         LRegex reg4("\\\\openout[0-9]+.*=.*`([^ ]+)'\\..*");
 662         // If an index should be created, MikTex does not write a line like
 663         //    \openout# = 'sample,idx'.
 664         // but intstead only a line like this into the log:
 665         //   Writing index file sample.idx
 666         LRegex reg5("Writing index file ([^ ]+).*");
 667         LRegex unwanted("^.*\\.(aux|log|dvi|bbl|ind|glo)$");
 668
 669         ifstream ifs(logfile.c_str());
 670         while (ifs) {
 671                 // Ok, the scanning of files here is not sufficient.
 672                 // Sometimes files are named by "File: xxx" only
 673                 // So I think we should use some regexps to find files instead.
 674                 // "(\([^ ]+\)"   should match the "(file " variant
 675                 // "File: \([^ ]+\)" should match the "File: file" variant
 676                 string foundfile;
 677                 string token;
 678                 getline(ifs, token);
 679                 token = strip(token, '\r');
 680                 if (token.empty()) continue;
 681
 682                 if (reg1.exact_match(token)) {
 683                         LRegex::SubMatches const & sub = reg1.exec(token);
 684                         foundfile = LSubstring(token, sub[1].first,
 685                                                sub[1].second);
 686                 } else if (reg2.exact_match(token)) {
 687                         LRegex::SubMatches const & sub = reg2.exec(token);
 688                         foundfile = LSubstring(token, sub[1].first,
 689                                                sub[1].second);
 690                 } else if (reg3.exact_match(token)) {
 691                         LRegex::SubMatches const & sub = reg3.exec(token);
 692                         foundfile = LSubstring(token, sub[1].first,
 693                                                sub[1].second);
 694                 } else if (reg4.exact_match(token)) {
 695                         LRegex::SubMatches const & sub = reg4.exec(token);
 696                         foundfile = LSubstring(token, sub[1].first,
 697                                                sub[1].second);
 698                 } else if (reg5.exact_match(token)) {
 699                         LRegex::SubMatches const & sub = reg5.exec(token);
 700                         foundfile = LSubstring(token, sub[1].first,
 701                                                sub[1].second);
 702                 } else {
 703                         continue;
 704                 }
 705
 706                 // convert from native os path to unix path
 707                 foundfile = os::internal_path(foundfile);
 708
 709                 lyxerr[Debug::DEPEND] << "Found file: "
 710                                       << foundfile << endl;
 711
 712                 // Ok now we found a file.
 713                 // Now we should make sure that this is a file that we can
 714                 // access through the normal paths.
 715                 // We will not try any fancy search methods to
 716                 // find the file.
 717
 718                 // (1) foundfile is an
 719                 //     absolute path and should
 720                 //     be inserted.
 721                 if (AbsolutePath(foundfile)) {
 722                         lyxerr[Debug::DEPEND] << "AbsolutePath file: "
 723                                               << foundfile << endl;
 724                         // On initial insert we want to do the update at once
 725                         // since this file can not be a file generated by
 726                         // the latex run.
 727                         if (FileInfo(foundfile).exist())
 728                                 head.insert(foundfile, true);
 729                 }
 730
 731                 // (2) foundfile is in the tmpdir
 732                 //     insert it into head
 733                 else if (FileInfo(OnlyFilename(foundfile)).exist()) {
 734                         if (unwanted.exact_match(foundfile)) {
 735                                 lyxerr[Debug::DEPEND]
 736                                         << "We don't want "
 737                                         << OnlyFilename(foundfile)
 738                                         << " in the dep file"
 739                                         << endl;
 740                         } else if (suffixIs(foundfile, ".tex")) {
 741                                 // This is a tex file generated by LyX
 742                                 // and latex is not likely to change this
 743                                 // during its runs.
 744                                 lyxerr[Debug::DEPEND]
 745                                         << "Tmpdir TeX file: "
 746                                         << OnlyFilename(foundfile)
 747                                         << endl;
 748                                 head.insert(foundfile, true);
 749                         } else {
 750                                 lyxerr[Debug::DEPEND]
 751                                         << "In tmpdir file:"
 752                                         << OnlyFilename(foundfile)
 753                                         << endl;
 754                                 head.insert(OnlyFilename(foundfile));
 755                         }
 756                 } else
 757                         lyxerr[Debug::DEPEND]
 758                                 << "Not a file or we are unable to find it."
 759                                 << endl;
 760         }
 761
 762         // Make sure that the main .tex file is in the dependancy file.
 763         head.insert(OnlyFilename(file), true);
 764 }