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
  20 #include "LaTeX.h"
  21 #include "bufferlist.h"
  22 #include "gettext.h"
  23 #include "lyxfunc.h"
  24 #include "debug.h"
  25 #include "support/filetools.h"
  26 #include "support/FileInfo.h"
  27 #include "support/lstrings.h"
  28 #include "support/lyxlib.h"
  29 #include "support/systemcall.h"
  30 #include "support/os.h"
  31 #include "support/path.h"
  32
  33 #include <boost/regex.hpp>
  34
  35 #include <fstream>
  36 #include <cstdio>  // sscanf
  37
  38 #ifndef CXX_GLOBAL_CSTD
  39 using std::sscanf;
  40 #endif
  41
  42 using std::ifstream;
  43 using std::getline;
  44 using std::endl;
  45 using std::vector;
  46 using std::set;
  47 using boost::regex;
  48 using boost::regex_match;
  49 using boost::smatch;
  50
  51 // TODO: in no particular order
  52 // - get rid of the extern BufferList and the call to
  53 //   BufferList::updateIncludedTeXfiles, this should either
  54 //   be done before calling LaTeX::funcs or in a completely
  55 //   different way.
  56 // - the bibtex command options should be supported.
  57 // - the makeindex style files should be taken care of with
  58 //   the dependency mechanism.
  59 // - makeindex commandline options should be supported
  60 // - somewhere support viewing of bibtex and makeindex log files.
  61 // - we should perhaps also scan the bibtex log file
  62 // - we should perhaps also scan the bibtex log file
  63
  64 extern BufferList bufferlist;
  65
  66 /*
  67  * CLASS TEXERRORS
  68  */
  69
  70 void TeXErrors::insertError(int line, string const & error_desc,
  71                             string const & error_text)
  72 {
  73         Error newerr(line, error_desc, error_text);
  74         errors.push_back(newerr);
  75 }
  76
  77 /*
  78  * CLASS LaTeX
  79  */
  80
  81 LaTeX::LaTeX(string const & latex, string const & f, string const & p)
  82                 : cmd(latex), file(f), path(p)
  83 {
  84         num_errors = 0;
  85         depfile = file + ".dep";
  86         if (prefixIs(cmd, "pdf")) { // Do we use pdflatex ?
  87                 depfile += "-pdf";
  88                 output_file = ChangeExtension(file,".pdf");
  89         } else {
  90                 output_file = ChangeExtension(file,".dvi");
  91         }
  92 }
  93
  94
  95 void LaTeX::deleteFilesOnError() const
  96 {
  97         // currently just a dummy function.
  98
  99         // What files do we have to delete?
 100
 101         // This will at least make latex do all the runs
 102         lyx::unlink(depfile);
 103
 104         // but the reason for the error might be in a generated file...
 105
 106         string ofname = OnlyFilename(file);
 107
 108         // bibtex file
 109         string bbl = ChangeExtension(ofname, ".bbl");
 110         lyx::unlink(bbl);
 111
 112         // makeindex file
 113         string ind = ChangeExtension(ofname, ".ind");
 114         lyx::unlink(ind);
 115
 116         // Also remove the aux file
 117         string aux = ChangeExtension(ofname, ".aux");
 118         lyx::unlink(aux);
 119 }
 120
 121
 122 int LaTeX::run(TeXErrors & terr, LyXFunc * lfun)
 123         // We know that this function will only be run if the lyx buffer
 124         // has been changed. We also know that a newly written .tex file
 125         // is always different from the previous one because of the date
 126         // in it. However it seems safe to run latex (at least) on time each
 127         // time the .tex file changes.
 128 {
 129         int scanres = NO_ERRORS;
 130         unsigned int count = 0; // number of times run
 131         num_errors = 0; // just to make sure.
 132         const unsigned int MAX_RUN = 6;
 133         DepTable head; // empty head
 134         bool rerun = false; // rerun requested
 135
 136         // The class LaTeX does not know the temp path.
 137         bufferlist.updateIncludedTeXfiles(lyx::getcwd()); //GetCWD());
 138
 139         // Never write the depfile if an error was encountered.
 140
 141         // 0
 142         // first check if the file dependencies exist:
 143         //     ->If it does exist
 144         //             check if any of the files mentioned in it have
 145         //             changed (done using a checksum).
 146         //                 -> if changed:
 147         //                        run latex once and
 148         //                        remake the dependency file
 149         //                 -> if not changed:
 150         //                        just return there is nothing to do for us.
 151         //     ->if it doesn't exist
 152         //             make it and
 153         //             run latex once (we need to run latex once anyway) and
 154         //             remake the dependency file.
 155         //
 156
 157         FileInfo fi(depfile);
 158         bool had_depfile = fi.exist();
 159         bool run_bibtex = false;
 160         string aux_file = OnlyFilename(ChangeExtension(file, "aux"));
 161
 162         if (had_depfile) {
 163                 lyxerr[Debug::DEPEND] << "Dependency file exists" << endl;
 164                 // Read the dep file:
 165                 head.read(depfile);
 166                 // Update the checksums
 167                 head.update();
 168                 // Can't just check if anything has changed because it might have aborted
 169                 // on error last time... in which cas we need to re-run latex
 170                 // and collect the error messages (even if they are the same).
 171                 if (!FileInfo(output_file).exist()) {
 172                         lyxerr[Debug::DEPEND]
 173                                 << "re-running LaTeX because output file doesn't exist." << endl;
 174                 } else if (!head.sumchange()) {
 175                         lyxerr[Debug::DEPEND] << "return no_change" << endl;
 176                         return NO_CHANGE;
 177                 } else {
 178                         lyxerr[Debug::DEPEND]
 179                                 << "Dependency file has changed" << endl;
 180                 }
 181
 182                 if (head.extchanged(".bib") || head.extchanged(".bst"))
 183                         run_bibtex = true;
 184         } else
 185                 lyxerr[Debug::DEPEND]
 186                         << "Dependency file does not exist" << endl;
 187
 188         /// We scan the aux file even when had_depfile = false,
 189         /// because we can run pdflatex on the file after running latex on it,
 190         /// in which case we will not need to run bibtex again.
 191         vector<Aux_Info> bibtex_info_old;
 192         if (!run_bibtex)
 193                 bibtex_info_old = scanAuxFiles(aux_file);
 194
 195         ++count;
 196         lyxerr[Debug::LATEX] << "Run #" << count << endl;
 197         if (lfun) {
 198                 ostringstream str;
 199                 str << _("LaTeX run number") << ' ' << count;
 200                 lfun->dispatch(LFUN_MESSAGE, str.str().c_str(), false);
 201         }
 202
 203         this->operator()();
 204         scanres = scanLogFile(terr);
 205         if (scanres & ERROR_RERUN) {
 206                 lyxerr[Debug::LATEX] << "Rerunning LaTeX" << endl;
 207                 this->operator()();
 208                 scanres = scanLogFile(terr);
 209         }
 210
 211         if (scanres & ERRORS) {
 212                 deleteFilesOnError();
 213                 return scanres; // return on error
 214         }
 215
 216         vector<Aux_Info> const bibtex_info = scanAuxFiles(aux_file);
 217         if (!run_bibtex && bibtex_info_old != bibtex_info)
 218                 run_bibtex = true;
 219
 220         // update the dependencies.
 221         deplog(head); // reads the latex log
 222         head.update();
 223
 224         // 0.5
 225         // At this point we must run external programs if needed.
 226         // makeindex will be run if a .idx file changed or was generated.
 227         // And if there were undefined citations or changes in references
 228         // the .aux file is checked for signs of bibtex. Bibtex is then run
 229         // if needed.
 230
 231         // run makeindex
 232         if (head.haschanged(OnlyFilename(ChangeExtension(file, ".idx")))) {
 233                 // no checks for now
 234                 lyxerr[Debug::LATEX] << "Running MakeIndex." << endl;
 235                 if (lfun) {
 236                         lfun->dispatch(LFUN_MESSAGE, _("Running MakeIndex."), false);
 237                 }
 238
 239                 rerun = runMakeIndex(OnlyFilename(ChangeExtension(file, ".idx")));
 240         }
 241
 242         // run bibtex
 243         // if (scanres & UNDEF_CIT || scanres & RERUN || run_bibtex)
 244         if (scanres & UNDEF_CIT || run_bibtex) {
 245                 // Here we must scan the .aux file and look for
 246                 // "\bibdata" and/or "\bibstyle". If one of those
 247                 // tags is found -> run bibtex and set rerun = true;
 248                 // no checks for now
 249                 lyxerr[Debug::LATEX] << "Running BibTeX." << endl;
 250                 if (lfun) {
 251                         lfun->dispatch(LFUN_MESSAGE, _("Running BibTeX."), false);
 252                 }
 253
 254                 updateBibtexDependencies(head, bibtex_info);
 255                 rerun |= runBibTeX(bibtex_info);
 256         } else if (!had_depfile) {
 257                 /// If we run pdflatex on the file after running latex on it,
 258                 /// then we do not need to run bibtex, but we do need to
 259                 /// insert the .bib and .bst files into the .dep-pdf file.
 260                 updateBibtexDependencies(head, bibtex_info);
 261         }
 262
 263         // 1
 264         // we know on this point that latex has been run once (or we just
 265         // returned) and the question now is to decide if we need to run
 266         // it any more. This is done by asking if any of the files in the
 267         // dependency file has changed. (remember that the checksum for
 268         // a given file is reported to have changed if it just was created)
 269         //     -> if changed or rerun == true:
 270         //             run latex once more and
 271         //             update the dependency structure
 272         //     -> if not changed:
 273         //             we does nothing at this point
 274         //
 275         if (rerun || head.sumchange()) {
 276                 rerun = false;
 277                 ++count;
 278                 lyxerr[Debug::DEPEND]
 279                         << "Dep. file has changed or rerun requested" << endl;
 280                 lyxerr[Debug::LATEX]
 281                         << "Run #" << count << endl;
 282                 if (lfun) {
 283                         ostringstream str;
 284                         str << _("LaTeX run number") << ' ' << count;
 285                         // check lyxstring string stream and gcc 3.1 before fixing
 286                         lfun->dispatch(LFUN_MESSAGE, str.str().c_str(), false);
 287                 }
 288
 289                 this->operator()();
 290                 scanres = scanLogFile(terr);
 291                 if (scanres & ERRORS) {
 292                         deleteFilesOnError();
 293                         return scanres; // return on error
 294                 }
 295
 296                 // update the depedencies
 297                 deplog(head); // reads the latex log
 298                 head.update();
 299         } else {
 300                 lyxerr[Debug::DEPEND] << "Dep. file has NOT changed" << endl;
 301         }
 302
 303         // 1.5
 304         // The inclusion of files generated by external programs like
 305         // makeindex or bibtex might have done changes to pagenumbereing,
 306         // etc. And because of this we must run the external programs
 307         // again to make sure everything is redone correctly.
 308         // Also there should be no need to run the external programs any
 309         // more after this.
 310
 311         // run makeindex if the <file>.idx has changed or was generated.
 312         if (head.haschanged(OnlyFilename(ChangeExtension(file, ".idx")))) {
 313                 // no checks for now
 314                 lyxerr[Debug::LATEX] << "Running MakeIndex." << endl;
 315                 if (lfun) {
 316                         lfun->dispatch(LFUN_MESSAGE, _("Running MakeIndex."), false);
 317                 }
 318
 319                 rerun = runMakeIndex(OnlyFilename(ChangeExtension(file, ".idx")));
 320         }
 321
 322         // 2
 323         // we will only run latex more if the log file asks for it.
 324         // or if the sumchange() is true.
 325         //     -> rerun asked for:
 326         //             run latex and
 327         //             remake the dependency file
 328         //             goto 2 or return if max runs are reached.
 329         //     -> rerun not asked for:
 330         //             just return (fall out of bottom of func)
 331         //
 332         while ((head.sumchange() || rerun || (scanres & RERUN))
 333                && count < MAX_RUN) {
 334                 // Yes rerun until message goes away, or until
 335                 // MAX_RUNS are reached.
 336                 rerun = false;
 337                 ++count;
 338                 lyxerr[Debug::LATEX] << "Run #" << count << endl;
 339                 if (lfun) {
 340                         ostringstream str;
 341                         str << _("LaTeX run number") << ' ' << count;
 342                         lfun->dispatch(LFUN_MESSAGE, str.str().c_str(), false);
 343                 }
 344
 345                 this->operator()();
 346                 scanres = scanLogFile(terr);
 347                 if (scanres & ERRORS) {
 348                         deleteFilesOnError();
 349                         return scanres; // return on error
 350                 }
 351
 352                 // keep this updated
 353                 head.update();
 354         }
 355
 356         // Write the dependencies to file.
 357         head.write(depfile);
 358         lyxerr[Debug::LATEX] << "Done." << endl;
 359         return scanres;
 360 }
 361
 362
 363 int LaTeX::operator()()
 364 {
 365 #ifndef __EMX__
 366         string tmp = cmd + ' ' + QuoteName(file) + " > /dev/null";
 367 #else // cmd.exe (OS/2) causes SYS0003 error at "/dev/null"
 368         string tmp = cmd + ' ' + file + " > nul";
 369 #endif
 370         Systemcall one;
 371         return one.startscript(Systemcall::Wait, tmp);
 372 }
 373
 374
 375 bool LaTeX::runMakeIndex(string const & f)
 376 {
 377         lyxerr[Debug::LATEX] << "idx file has been made,"
 378                 " running makeindex on file "
 379                              <<  f << endl;
 380
 381         // It should be possible to set the switches for makeindex
 382         // sorting style and such. It would also be very convenient
 383         // to be able to make style files from within LyX. This has
 384         // to come for a later time.
 385         string tmp = "makeindex -c -q ";
 386         tmp += f;
 387         Systemcall one;
 388         one.startscript(Systemcall::Wait, tmp);
 389         return true;
 390 }
 391
 392
 393 vector<Aux_Info> const
 394 LaTeX::scanAuxFiles(string const & file)
 395 {
 396         vector<Aux_Info> result;
 397
 398         result.push_back(scanAuxFile(file));
 399
 400         for (int i = 1; i < 1000; ++i) {
 401                 string file2 = ChangeExtension(file, "") + "." + tostr(i)
 402                         + ".aux";
 403                 FileInfo fi(file2);
 404                 if (!fi.exist())
 405                         break;
 406                 result.push_back(scanAuxFile(file2));
 407         }
 408         return result;
 409 }
 410
 411
 412 Aux_Info const LaTeX::scanAuxFile(string const & file)
 413 {
 414         Aux_Info result;
 415         result.aux_file = file;
 416         scanAuxFile(file, result);
 417         return result;
 418 }
 419
 420
 421 void LaTeX::scanAuxFile(string const & file, Aux_Info & aux_info)
 422 {
 423         lyxerr[Debug::LATEX] << "Scanning aux file: " << file << endl;
 424
 425         ifstream ifs(file.c_str());
 426         string token;
 427         regex reg1("\\\\citation\\{([^}]+)\\}");
 428         regex reg2("\\\\bibdata\\{([^}]+)\\}");
 429         regex reg3("\\\\bibstyle\\{([^}]+)\\}");
 430         regex reg4("\\\\@input\\{([^}]+)\\}");
 431
 432         while (getline(ifs, token)) {
 433                 token = strip(token, "\r");
 434                 smatch sub;
 435                 if (regex_match(token, sub, reg1)) {
 436                         string data = sub[1];
 437                         while (!data.empty()) {
 438                                 string citation;
 439                                 data = split(data, citation, ',');
 440                                 lyxerr[Debug::LATEX] << "Citation: "
 441                                                      << citation << endl;
 442                                 aux_info.citations.insert(citation);
 443                         }
 444                 } else if (regex_match(token, sub, reg2)) {
 445                         string data = sub[1];
 446                         // data is now all the bib files separated by ','
 447                         // get them one by one and pass them to the helper
 448                         while (!data.empty()) {
 449                                 string database;
 450                                 data = split(data, database, ',');
 451                                 database = ChangeExtension(database, "bib");
 452                                 lyxerr[Debug::LATEX] << "Bibtex database: `"
 453                                                      << database << "'" << endl;
 454                                 aux_info.databases.insert(database);
 455                         }
 456                 } else if (regex_match(token, sub, reg3)) {
 457                         string style = sub[1];
 458                         // token is now the style file
 459                         // pass it to the helper
 460                         style = ChangeExtension(style, "bst");
 461                         lyxerr[Debug::LATEX] << "Bibtex style: `"
 462                                              << style << "'" << endl;
 463                         aux_info.styles.insert(style);
 464                 } else if (regex_match(token, sub, reg4)) {
 465                         string file2 = sub[1];
 466                         scanAuxFile(file2, aux_info);
 467                 }
 468         }
 469 }
 470
 471
 472 void LaTeX::updateBibtexDependencies(DepTable & dep,
 473                                      vector<Aux_Info> const & bibtex_info)
 474 {
 475         // Since a run of Bibtex mandates more latex runs it is ok to
 476         // remove all ".bib" and ".bst" files.
 477         dep.remove_files_with_extension(".bib");
 478         dep.remove_files_with_extension(".bst");
 479         //string aux = OnlyFilename(ChangeExtension(file, ".aux"));
 480
 481         for (vector<Aux_Info>::const_iterator it = bibtex_info.begin();
 482              it != bibtex_info.end(); ++it) {
 483                 for (set<string>::const_iterator it2 = it->databases.begin();
 484                      it2 != it->databases.end(); ++it2) {
 485                         string file = findtexfile(*it2, "bib");
 486                         if (!file.empty())
 487                                 dep.insert(file, true);
 488                 }
 489
 490                 for (set<string>::const_iterator it2 = it->styles.begin();
 491                      it2 != it->styles.end(); ++it2) {
 492                         string file = findtexfile(*it2, "bst");
 493                         if (!file.empty())
 494                                 dep.insert(file, true);
 495                 }
 496         }
 497 }
 498
 499
 500 bool LaTeX::runBibTeX(vector<Aux_Info> const & bibtex_info)
 501 {
 502         bool result = false;
 503         for (vector<Aux_Info>::const_iterator it = bibtex_info.begin();
 504              it != bibtex_info.end(); ++it) {
 505                 if (it->databases.empty())
 506                         continue;
 507                 result = true;
 508
 509                 string tmp = "bibtex ";
 510                 tmp += OnlyFilename(ChangeExtension(it->aux_file, string()));
 511                 Systemcall one;
 512                 one.startscript(Systemcall::Wait, tmp);
 513         }
 514         // Return whether bibtex was run
 515         return result;
 516 }
 517
 518
 519 int LaTeX::scanLogFile(TeXErrors & terr)
 520 {
 521         int last_line = -1;
 522         int line_count = 1;
 523         int retval = NO_ERRORS;
 524         string tmp = OnlyFilename(ChangeExtension(file, ".log"));
 525         lyxerr[Debug::LATEX] << "Log file: " << tmp << endl;
 526         ifstream ifs(tmp.c_str());
 527
 528         string token;
 529         while (getline(ifs, token)) {
 530                 lyxerr[Debug::LATEX] << "Log line: " << token << endl;
 531
 532                 if (token.empty())
 533                         continue;
 534
 535                 if (prefixIs(token, "LaTeX Warning:")) {
 536                         // Here shall we handle different
 537                         // types of warnings
 538                         retval |= LATEX_WARNING;
 539                         lyxerr[Debug::LATEX] << "LaTeX Warning." << endl;
 540                         if (contains(token, "Rerun to get cross-references")) {
 541                                 retval |= RERUN;
 542                                 lyxerr[Debug::LATEX]
 543                                         << "We should rerun." << endl;
 544                         } else if (contains(token, "Citation")
 545                                    && contains(token, "on page")
 546                                    && contains(token, "undefined")) {
 547                                 retval |= UNDEF_CIT;
 548                         }
 549                 } else if (prefixIs(token, "Package")) {
 550                         // Package warnings
 551                         retval |= PACKAGE_WARNING;
 552                         if (contains(token, "natbib Warning:")) {
 553                                 // Natbib warnings
 554                                 if (contains(token, "Citation")
 555                                     && contains(token, "on page")
 556                                     && contains(token, "undefined")) {
 557                                         retval |= UNDEF_CIT;
 558                                 }
 559                         } else if (contains(token, "run BibTeX")) {
 560                                 retval |= UNDEF_CIT;
 561                         } else if (contains(token, "Rerun LaTeX") ||
 562                                    contains(token, "Rerun to get")) {
 563                                 // at least longtable.sty and bibtopic.sty
 564                                 // might use this.
 565                                 lyxerr[Debug::LATEX]
 566                                         << "We should rerun." << endl;
 567                                 retval |= RERUN;
 568                         }
 569                 } else if (prefixIs(token, "(")) {
 570                         if (contains(token, "Rerun LaTeX") ||
 571                             contains(token, "Rerun to get")) {
 572                                 // Used by natbib
 573                                 lyxerr[Debug::LATEX]
 574                                         << "We should rerun." << endl;
 575                                 retval |= RERUN;
 576                         }
 577                 } else if (prefixIs(token, "! ")) {
 578                         // Ok, we have something that looks like a TeX Error
 579                         // but what do we really have.
 580
 581                         // Just get the error description:
 582                         string desc(token, 2);
 583                         if (contains(token, "LaTeX Error:"))
 584                                 retval |= LATEX_ERROR;
 585                         // get the next line
 586                         string tmp;
 587                         int count = 0;
 588                         do {
 589                                 if (!getline(ifs, tmp))
 590                                         break;
 591                                 if (++count > 10)
 592                                         break;
 593                         } while (!prefixIs(tmp, "l."));
 594                         if (prefixIs(tmp, "l.")) {
 595                                 // we have a latex error
 596                                 retval |=  TEX_ERROR;
 597                                 if (contains(desc, "Package babel Error: You haven't defined the language"))
 598                                         retval |= ERROR_RERUN;
 599                                 // get the line number:
 600                                 int line = 0;
 601                                 sscanf(tmp.c_str(), "l.%d", &line);
 602                                 // get the rest of the message:
 603                                 string errstr(tmp, tmp.find(' '));
 604                                 errstr += '\n';
 605                                 getline(ifs, tmp);
 606                                 while (!contains(errstr, "l.")
 607                                        && !tmp.empty()
 608                                        && !prefixIs(tmp, "! ")
 609                                        && !contains(tmp, "(job aborted")) {
 610                                         errstr += tmp;
 611                                         errstr += "\n";
 612                                         getline(ifs, tmp);
 613                                 }
 614                                 lyxerr[Debug::LATEX]
 615                                         << "line: " << line << '\n'
 616                                         << "Desc: " << desc << '\n'
 617                                         << "Text: " << errstr << endl;
 618                                 if (line == last_line)
 619                                         ++line_count;
 620                                 else {
 621                                         line_count = 1;
 622                                         last_line = line;
 623                                 }
 624                                 if (line_count <= 5) {
 625                                         terr.insertError(line, desc, errstr);
 626                                         ++num_errors;
 627                                 }
 628                         }
 629                 } else {
 630                         // information messages, TeX warnings and other
 631                         // warnings we have not caught earlier.
 632                         if (prefixIs(token, "Overfull ")) {
 633                                 retval |= TEX_WARNING;
 634                         } else if (prefixIs(token, "Underfull ")) {
 635                                 retval |= TEX_WARNING;
 636                         } else if (contains(token, "Rerun to get citations")) {
 637                                 // Natbib seems to use this.
 638                                 retval |= UNDEF_CIT;
 639                         } else if (contains(token, "No pages of output")) {
 640                                 // A dvi file was not created
 641                                 retval |= NO_OUTPUT;
 642                         } else if (contains(token, "That makes 100 errors")) {
 643                                 // More than 100 errors were reprted
 644                                 retval |= TOO_MANY_ERRORS;
 645                         }
 646                 }
 647         }
 648         lyxerr[Debug::LATEX] << "Log line: " << token << endl;
 649         return retval;
 650 }
 651
 652
 653 void LaTeX::deplog(DepTable & head)
 654 {
 655         // This function reads the LaTeX log file end extracts all the external
 656         // files used by the LaTeX run. The files are then entered into the
 657         // dependency file.
 658
 659         string const logfile = OnlyFilename(ChangeExtension(file, ".log"));
 660
 661         regex reg1("\\)* *\\(([^ )]+).*");
 662         regex reg2("File: ([^ ]+).*");
 663         regex reg3("No file ([^ ]+)\\..*");
 664         regex reg4("\\\\openout[0-9]+.*=.*`([^ ]+)'\\..*");
 665         // If an index should be created, MikTex does not write a line like
 666         //    \openout# = 'sample,idx'.
 667         // but intstead only a line like this into the log:
 668         //   Writing index file sample.idx
 669         regex reg5("Writing index file ([^ ]+).*");
 670         regex unwanted("^.*\\.(aux|log|dvi|bbl|ind|glo)$");
 671
 672         ifstream ifs(logfile.c_str());
 673         while (ifs) {
 674                 // Ok, the scanning of files here is not sufficient.
 675                 // Sometimes files are named by "File: xxx" only
 676                 // So I think we should use some regexps to find files instead.
 677                 // "(\([^ ]+\)"   should match the "(file " variant
 678                 // "File: \([^ ]+\)" should match the "File: file" variant
 679                 string foundfile;
 680                 string token;
 681                 getline(ifs, token);
 682                 token = strip(token, "\r");
 683                 if (token.empty()) continue;
 684
 685                 smatch sub;
 686                 if (regex_match(token, sub, reg1)) {
 687                         foundfile = sub[1];
 688                 } else if (regex_match(token, sub, reg2)) {
 689                         foundfile = sub[1];
 690                 } else if (regex_match(token, sub, reg3)) {
 691                         foundfile = sub[1];
 692                 } else if (regex_match(token, sub, reg4)) {
 693                         foundfile = sub[1];
 694                 } else if (regex_match(token, sub, reg5)) {
 695                         foundfile = sub[1];
 696                 } else {
 697                         continue;
 698                 }
 699
 700                 // convert from native os path to unix path
 701                 foundfile = os::internal_path(foundfile);
 702
 703                 lyxerr[Debug::DEPEND] << "Found file: "
 704                                       << foundfile << endl;
 705
 706                 // Ok now we found a file.
 707                 // Now we should make sure that this is a file that we can
 708                 // access through the normal paths.
 709                 // We will not try any fancy search methods to
 710                 // find the file.
 711
 712                 // (1) foundfile is an
 713                 //     absolute path and should
 714                 //     be inserted.
 715                 if (AbsolutePath(foundfile)) {
 716                         lyxerr[Debug::DEPEND] << "AbsolutePath file: "
 717                                               << foundfile << endl;
 718                         // On initial insert we want to do the update at once
 719                         // since this file can not be a file generated by
 720                         // the latex run.
 721                         if (FileInfo(foundfile).exist())
 722                                 head.insert(foundfile, true);
 723                 }
 724
 725                 // (2) foundfile is in the tmpdir
 726                 //     insert it into head
 727                 else if (FileInfo(OnlyFilename(foundfile)).exist()) {
 728                         if (regex_match(foundfile, unwanted)) {
 729                                 lyxerr[Debug::DEPEND]
 730                                         << "We don't want "
 731                                         << OnlyFilename(foundfile)
 732                                         << " in the dep file"
 733                                         << endl;
 734                         } else if (suffixIs(foundfile, ".tex")) {
 735                                 // This is a tex file generated by LyX
 736                                 // and latex is not likely to change this
 737                                 // during its runs.
 738                                 lyxerr[Debug::DEPEND]
 739                                         << "Tmpdir TeX file: "
 740                                         << OnlyFilename(foundfile)
 741                                         << endl;
 742                                 head.insert(foundfile, true);
 743                         } else {
 744                                 lyxerr[Debug::DEPEND]
 745                                         << "In tmpdir file:"
 746                                         << OnlyFilename(foundfile)
 747                                         << endl;
 748                                 head.insert(OnlyFilename(foundfile));
 749                         }
 750                 } else
 751                         lyxerr[Debug::DEPEND]
 752                                 << "Not a file or we are unable to find it."
 753                                 << endl;
 754         }
 755
 756         // Make sure that the main .tex file is in the dependancy file.
 757         head.insert(OnlyFilename(file), true);
 758 }