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