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 "support/filetools.h"
  23 #include "support/os.h"
  24 #include "support/FileInfo.h"
  25 #include "debug.h"
  26 #include "support/lyxlib.h"
  27 #include "support/syscall.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                 output_file = ChangeExtension(file,".pdf");
  81         } else {
  82                 output_file = ChangeExtension(file,".dvi");
  83         }
  84 }
  85
  86
  87 void LaTeX::deleteFilesOnError() const
  88 {
  89         // currently just a dummy function.
  90
  91         // What files do we have to delete?
  92
  93         // This will at least make latex do all the runs
  94         lyx::unlink(depfile);
  95
  96         // but the reason for the error might be in a generated file...
  97
  98         string ofname = OnlyFilename(file);
  99
 100         // bibtex file
 101         string bbl = ChangeExtension(ofname, ".bbl");
 102         lyx::unlink(bbl);
 103
 104         // makeindex file
 105         string ind = ChangeExtension(ofname, ".ind");
 106         lyx::unlink(ind);
 107
 108         // Also remove the aux file
 109         string aux = ChangeExtension(ofname, ".aux");
 110         lyx::unlink(aux);
 111 }
 112
 113
 114 int LaTeX::run(TeXErrors & terr, LyXFunc * lfun)
 115         // We know that this function will only be run if the lyx buffer
 116         // has been changed. We also know that a newly written .tex file
 117         // is always different from the previous one because of the date
 118         // in it. However it seems safe to run latex (at least) on time each
 119         // time the .tex file changes.
 120 {
 121         int scanres = NO_ERRORS;
 122         unsigned int count = 0; // number of times run
 123         num_errors = 0; // just to make sure.
 124         const unsigned int MAX_RUN = 6;
 125         DepTable head; // empty head
 126         bool rerun = false; // rerun requested
 127
 128         // The class LaTeX does not know the temp path.
 129         bufferlist.updateIncludedTeXfiles(lyx::getcwd()); //GetCWD());
 130
 131         // Never write the depfile if an error was encountered.
 132
 133         // 0
 134         // first check if the file dependencies exist:
 135         //     ->If it does exist
 136         //             check if any of the files mentioned in it have
 137         //             changed (done using a checksum).
 138         //                 -> if changed:
 139         //                        run latex once and
 140         //                        remake the dependency file
 141         //                 -> if not changed:
 142         //                        just return there is nothing to do for us.
 143         //     ->if it doesn't exist
 144         //             make it and
 145         //             run latex once (we need to run latex once anyway) and
 146         //             remake the dependency file.
 147         //
 148
 149         FileInfo fi(depfile);
 150         bool had_depfile = fi.exist();
 151         bool run_bibtex = false;
 152         string aux_file = OnlyFilename(ChangeExtension(file, "aux"));
 153
 154         if (had_depfile) {
 155                 lyxerr[Debug::DEPEND] << "Dependency file exists" << endl;
 156                 // Read the dep file:
 157                 head.read(depfile);
 158                 // Update the checksums
 159                 head.update();
 160                 // Can't just check if anything has changed because it might have aborted
 161                 // on error last time... in which cas we need to re-run latex
 162                 // and collect the error messages (even if they are the same).
 163                 if (!FileInfo(output_file).exist()) {
 164                         lyxerr[Debug::DEPEND]
 165                                 << "re-running LaTeX because output file doesn't exist." << endl;
 166                 } else if (!head.sumchange()) {
 167                         lyxerr[Debug::DEPEND] << "return no_change" << endl;
 168                         return NO_CHANGE;
 169                 } else {
 170                         lyxerr[Debug::DEPEND]
 171                                 << "Dependency file has changed" << endl;
 172                 }
 173
 174                 if (head.extchanged(".bib") || head.extchanged(".bst"))
 175                         run_bibtex = true;
 176         } else
 177                 lyxerr[Debug::DEPEND]
 178                         << "Dependency file does not exist" << endl;
 179
 180         /// We scan the aux file even when had_depfile = false,
 181         /// because we can run pdflatex on the file after running latex on it,
 182         /// in which case we will not need to run bibtex again.
 183         vector<Aux_Info> bibtex_info_old;
 184         if (!run_bibtex)
 185                 bibtex_info_old = scanAuxFiles(aux_file);
 186
 187         ++count;
 188         lyxerr[Debug::LATEX] << "Run #" << count << endl;
 189         if (lfun) {
 190                 ostringstream str;
 191                 str << _("LaTeX run number") << ' ' << count;
 192                 lfun->dispatch(LFUN_MESSAGE, str.str().c_str());
 193         }
 194
 195         this->operator()();
 196         scanres = scanLogFile(terr);
 197         if (scanres & ERROR_RERUN) {
 198                 lyxerr[Debug::LATEX] << "Rerunning LaTeX" << endl;
 199                 this->operator()();
 200                 scanres = scanLogFile(terr);
 201         }
 202
 203         if (scanres & ERRORS) {
 204                 deleteFilesOnError();
 205                 return scanres; // return on error
 206         }
 207
 208         vector<Aux_Info> const bibtex_info = scanAuxFiles(aux_file);
 209         if (!run_bibtex && bibtex_info_old != bibtex_info)
 210                 run_bibtex = true;
 211
 212         // update the dependencies.
 213         deplog(head); // reads the latex log
 214         head.update();
 215
 216         // 0.5
 217         // At this point we must run external programs if needed.
 218         // makeindex will be run if a .idx file changed or was generated.
 219         // And if there were undefined citations or changes in references
 220         // the .aux file is checked for signs of bibtex. Bibtex is then run
 221         // if needed.
 222
 223         // run makeindex
 224         if (head.haschanged(OnlyFilename(ChangeExtension(file, ".idx")))) {
 225                 // no checks for now
 226                 lyxerr[Debug::LATEX] << "Running MakeIndex." << endl;
 227                 if (lfun) {
 228                         lfun->dispatch(LFUN_MESSAGE, _("Running MakeIndex."));
 229                 }
 230
 231                 rerun = runMakeIndex(OnlyFilename(ChangeExtension(file, ".idx")));
 232         }
 233
 234         // run bibtex
 235         // if (scanres & UNDEF_CIT || scanres & RERUN || run_bibtex)
 236         if (scanres & UNDEF_CIT || run_bibtex) {
 237                 // Here we must scan the .aux file and look for
 238                 // "\bibdata" and/or "\bibstyle". If one of those
 239                 // tags is found -> run bibtex and set rerun = true;
 240                 // no checks for now
 241                 lyxerr[Debug::LATEX] << "Running BibTeX." << endl;
 242                 if (lfun) {
 243                         lfun->dispatch(LFUN_MESSAGE, _("Running BibTeX."));
 244                 }
 245
 246                 updateBibtexDependencies(head, bibtex_info);
 247                 rerun |= runBibTeX(bibtex_info);
 248         } else if (!had_depfile) {
 249                 /// If we run pdflatex on the file after running latex on it,
 250                 /// then we do not need to run bibtex, but we do need to
 251                 /// insert the .bib and .bst files into the .dep-pdf file.
 252                 updateBibtexDependencies(head, bibtex_info);
 253         }
 254
 255         // 1
 256         // we know on this point that latex has been run once (or we just
 257         // returned) and the question now is to decide if we need to run
 258         // it any more. This is done by asking if any of the files in the
 259         // dependency file has changed. (remember that the checksum for
 260         // a given file is reported to have changed if it just was created)
 261         //     -> if changed or rerun == true:
 262         //             run latex once more and
 263         //             update the dependency structure
 264         //     -> if not changed:
 265         //             we does nothing at this point
 266         //
 267         if (rerun || head.sumchange()) {
 268                 rerun = false;
 269                 ++count;
 270                 lyxerr[Debug::DEPEND]
 271                         << "Dep. file has changed or rerun requested" << endl;
 272                 lyxerr[Debug::LATEX]
 273                         << "Run #" << count << endl;
 274                 if (lfun) {
 275                         ostringstream str;
 276                         str << _("LaTeX run number") << ' ' << count;
 277                         lfun->dispatch(LFUN_MESSAGE, str.str().c_str());
 278                 }
 279
 280                 this->operator()();
 281                 scanres = scanLogFile(terr);
 282                 if (scanres & ERRORS) {
 283                         deleteFilesOnError();
 284                         return scanres; // return on error
 285                 }
 286
 287                 // update the depedencies
 288                 deplog(head); // reads the latex log
 289                 head.update();
 290         } else {
 291                 lyxerr[Debug::DEPEND] << "Dep. file has NOT changed" << endl;
 292         }
 293
 294         // 1.5
 295         // The inclusion of files generated by external programs like
 296         // makeindex or bibtex might have done changes to pagenumbereing,
 297         // etc. And because of this we must run the external programs
 298         // again to make sure everything is redone correctly.
 299         // Also there should be no need to run the external programs any
 300         // more after this.
 301
 302         // run makeindex if the <file>.idx has changed or was generated.
 303         if (head.haschanged(OnlyFilename(ChangeExtension(file, ".idx")))) {
 304                 // no checks for now
 305                 lyxerr[Debug::LATEX] << "Running MakeIndex." << endl;
 306                 if (lfun) {
 307                         lfun->dispatch(LFUN_MESSAGE, _("Running MakeIndex."));
 308                 }
 309
 310                 rerun = runMakeIndex(OnlyFilename(ChangeExtension(file, ".idx")));
 311         }
 312
 313         // 2
 314         // we will only run latex more if the log file asks for it.
 315         // or if the sumchange() is true.
 316         //     -> rerun asked for:
 317         //             run latex and
 318         //             remake the dependency file
 319         //             goto 2 or return if max runs are reached.
 320         //     -> rerun not asked for:
 321         //             just return (fall out of bottom of func)
 322         //
 323         while ((head.sumchange() || rerun || (scanres & RERUN))
 324                && count < MAX_RUN) {
 325                 // Yes rerun until message goes away, or until
 326                 // MAX_RUNS are reached.
 327                 rerun = false;
 328                 ++count;
 329                 lyxerr[Debug::LATEX] << "Run #" << count << endl;
 330                 if (lfun) {
 331                         ostringstream str;
 332                         str << _("LaTeX run number") << ' ' << count;
 333                         lfun->dispatch(LFUN_MESSAGE, str.str().c_str());
 334                 }
 335
 336                 this->operator()();
 337                 scanres = scanLogFile(terr);
 338                 if (scanres & ERRORS) {
 339                         deleteFilesOnError();
 340                         return scanres; // return on error
 341                 }
 342
 343                 // keep this updated
 344                 head.update();
 345         }
 346
 347         // Write the dependencies to file.
 348         head.write(depfile);
 349         lyxerr[Debug::LATEX] << "Done." << endl;
 350         return scanres;
 351 }
 352
 353
 354 int LaTeX::operator()()
 355 {
 356 #ifndef __EMX__
 357         string tmp = cmd + ' ' + QuoteName(file) + " > /dev/null";
 358 #else // cmd.exe (OS/2) causes SYS0003 error at "/dev/null"
 359         string tmp = cmd + ' ' + file + " > nul";
 360 #endif
 361         Systemcalls one;
 362         return one.startscript(Systemcalls::Wait, tmp);
 363 }
 364
 365
 366 bool LaTeX::runMakeIndex(string const & f)
 367 {
 368         lyxerr[Debug::LATEX] << "idx file has been made,"
 369                 " running makeindex on file "
 370                              <<  f << endl;
 371
 372         // It should be possible to set the switches for makeindex
 373         // sorting style and such. It would also be very convenient
 374         // to be able to make style files from within LyX. This has
 375         // to come for a later time. (0.13 perhaps?)
 376         string tmp = "makeindex -c -q ";
 377         tmp += f;
 378         Systemcalls one;
 379         one.startscript(Systemcalls::Wait, tmp);
 380         return true;
 381 }
 382
 383
 384 vector<Aux_Info> const
 385 LaTeX::scanAuxFiles(string const & file)
 386 {
 387         vector<Aux_Info> result;
 388
 389         result.push_back(scanAuxFile(file));
 390
 391         for (int i = 1; i < 1000; ++i) {
 392                 string file2 = ChangeExtension(file, "") + "." + tostr(i)
 393                         + ".aux";
 394                 FileInfo fi(file2);
 395                 if (!fi.exist())
 396                         break;
 397                 result.push_back(scanAuxFile(file2));
 398         }
 399         return result;
 400 }
 401
 402
 403 Aux_Info const LaTeX::scanAuxFile(string const & file)
 404 {
 405         Aux_Info result;
 406         result.aux_file = file;
 407         scanAuxFile(file, result);
 408         return result;
 409 }
 410
 411
 412 void LaTeX::scanAuxFile(string const & file, Aux_Info & aux_info)
 413 {
 414         lyxerr[Debug::LATEX] << "Scanning aux file: " << file << endl;
 415
 416         ifstream ifs(file.c_str());
 417         string token;
 418         LRegex reg1("\\\\citation\\{([^}]+)\\}");
 419         LRegex reg2("\\\\bibdata\\{([^}]+)\\}");
 420         LRegex reg3("\\\\bibstyle\\{([^}]+)\\}");
 421         LRegex reg4("\\\\@input\\{([^}]+)\\}");
 422
 423         while (getline(ifs, token)) {
 424                 token = strip(token, '\r');
 425                 if (reg1.exact_match(token)) {
 426                         LRegex::SubMatches const & sub = reg1.exec(token);
 427                         string data = LSubstring(token, sub[1].first,
 428                                                  sub[1].second);
 429                         while (!data.empty()) {
 430                                 string citation;
 431                                 data = split(data, citation, ',');
 432                                 lyxerr[Debug::LATEX] << "Citation: "
 433                                                      << citation << endl;
 434                                 aux_info.citations.insert(citation);
 435                         }
 436                 } else if (reg2.exact_match(token)) {
 437                         LRegex::SubMatches const & sub = reg2.exec(token);
 438                         string data = LSubstring(token, sub[1].first,
 439                                                  sub[1].second);
 440                         // data is now all the bib files separated by ','
 441                         // get them one by one and pass them to the helper
 442                         while (!data.empty()) {
 443                                 string database;
 444                                 data = split(data, database, ',');
 445                                 database = ChangeExtension(database, "bib");
 446                                 lyxerr[Debug::LATEX] << "Bibtex database: `"
 447                                                      << database << "'" << endl;
 448                                 aux_info.databases.insert(database);
 449                         }
 450                 } else if (reg3.exact_match(token)) {
 451                         LRegex::SubMatches const & sub = reg3.exec(token);
 452                         string style = LSubstring(token, sub[1].first,
 453                                                   sub[1].second);
 454                         // token is now the style file
 455                         // pass it to the helper
 456                         style = ChangeExtension(style, "bst");
 457                         lyxerr[Debug::LATEX] << "Bibtex style: `"
 458                                              << style << "'" << endl;
 459                         aux_info.styles.insert(style);
 460                 } else if (reg4.exact_match(token)) {
 461                         LRegex::SubMatches const & sub = reg4.exec(token);
 462                         string file2 = LSubstring(token, sub[1].first,
 463                                                   sub[1].second);
 464                         scanAuxFile(file2, aux_info);
 465                 }
 466         }
 467 }
 468
 469
 470 void LaTeX::updateBibtexDependencies(DepTable & dep,
 471                                      vector<Aux_Info> const & bibtex_info)
 472 {
 473         // Since a run of Bibtex mandates more latex runs it is ok to
 474         // remove all ".bib" and ".bst" files.
 475         dep.remove_files_with_extension(".bib");
 476         dep.remove_files_with_extension(".bst");
 477         //string aux = OnlyFilename(ChangeExtension(file, ".aux"));
 478
 479         for (vector<Aux_Info>::const_iterator it = bibtex_info.begin();
 480              it != bibtex_info.end(); ++it) {
 481                 for (set<string>::const_iterator it2 = it->databases.begin();
 482                      it2 != it->databases.end(); ++it2) {
 483                         string file = findtexfile(*it2, "bib");
 484                         if (!file.empty())
 485                                 dep.insert(file, true);
 486                 }
 487
 488                 for (set<string>::const_iterator it2 = it->styles.begin();
 489                      it2 != it->styles.end(); ++it2) {
 490                         string file = findtexfile(*it2, "bst");
 491                         if (!file.empty())
 492                                 dep.insert(file, true);
 493                 }
 494         }
 495 }
 496
 497
 498 bool LaTeX::runBibTeX(vector<Aux_Info> const & bibtex_info)
 499 {
 500         bool result = false;
 501         for (vector<Aux_Info>::const_iterator it = bibtex_info.begin();
 502              it != bibtex_info.end(); ++it) {
 503                 if (it->databases.empty())
 504                         continue;
 505                 result = true;
 506
 507                 string tmp = "bibtex ";
 508                 tmp += OnlyFilename(ChangeExtension(it->aux_file, string()));
 509                 Systemcalls one;
 510                 one.startscript(Systemcalls::Wait, tmp);
 511         }
 512         // Return whether bibtex was run
 513         return result;
 514 }
 515
 516
 517 int LaTeX::scanLogFile(TeXErrors & terr)
 518 {
 519         int last_line = -1;
 520         int line_count = 1;
 521         int retval = NO_ERRORS;
 522         string tmp = OnlyFilename(ChangeExtension(file, ".log"));
 523         lyxerr[Debug::LATEX] << "Log file: " << tmp << endl;
 524         ifstream ifs(tmp.c_str());
 525
 526         string token;
 527         while (getline(ifs, token)) {
 528                 lyxerr[Debug::LATEX] << "Log line: " << token << endl;
 529
 530                 if (token.empty())
 531                         continue;
 532
 533                 if (prefixIs(token, "LaTeX Warning:")) {
 534                         // Here shall we handle different
 535                         // types of warnings
 536                         retval |= LATEX_WARNING;
 537                         lyxerr[Debug::LATEX] << "LaTeX Warning." << endl;
 538                         if (contains(token, "Rerun to get cross-references")) {
 539                                 retval |= RERUN;
 540                                 lyxerr[Debug::LATEX]
 541                                         << "We should rerun." << endl;
 542                         } else if (contains(token, "Citation")
 543                                    && contains(token, "on page")
 544                                    && contains(token, "undefined")) {
 545                                 retval |= UNDEF_CIT;
 546                         }
 547                 } else if (prefixIs(token, "Package")) {
 548                         // Package warnings
 549                         retval |= PACKAGE_WARNING;
 550                         if (contains(token, "natbib Warning:")) {
 551                                 // Natbib warnings
 552                                 if (contains(token, "Citation")
 553                                     && contains(token, "on page")
 554                                     && contains(token, "undefined")) {
 555                                         retval |= UNDEF_CIT;
 556                                 }
 557                         } else if (contains(token, "run BibTeX")) {
 558                                 retval |= UNDEF_CIT;
 559                         } else if (contains(token, "Rerun LaTeX") ||
 560                                    contains(token, "Rerun to get")) {
 561                                 // at least longtable.sty and bibtopic.sty
 562                                 // might use this.
 563                                 lyxerr[Debug::LATEX]
 564                                         << "We should rerun." << endl;
 565                                 retval |= RERUN;
 566                         }
 567                 } else if (prefixIs(token, "(")) {
 568                         if (contains(token, "Rerun LaTeX") ||
 569                             contains(token, "Rerun to get")) {
 570                                 // Used by natbib
 571                                 lyxerr[Debug::LATEX]
 572                                         << "We should rerun." << endl;
 573                                 retval |= RERUN;
 574                         }
 575                 } else if (prefixIs(token, "! ")) {
 576                         // Ok, we have something that looks like a TeX Error
 577                         // but what do we really have.
 578
 579                         // Just get the error description:
 580                         string desc(token, 2);
 581                         if (contains(token, "LaTeX Error:"))
 582                                 retval |= LATEX_ERROR;
 583                         // get the next line
 584                         string tmp;
 585                         int count = 0;
 586                         do {
 587                                 if (!getline(ifs, tmp))
 588                                         break;
 589                                 if (++count > 10)
 590                                         break;
 591                         } while (!prefixIs(tmp, "l."));
 592                         if (prefixIs(tmp, "l.")) {
 593                                 // we have a latex error
 594                                 retval |=  TEX_ERROR;
 595                                 if (contains(desc, "Package babel Error: You haven't defined the language"))
 596                                         retval |= ERROR_RERUN;
 597                                 // get the line number:
 598                                 int line = 0;
 599                                 sscanf(tmp.c_str(), "l.%d", &line);
 600                                 // get the rest of the message:
 601                                 string errstr(tmp, tmp.find(' '));
 602                                 errstr += '\n';
 603                                 getline(ifs, tmp);
 604                                 while (!contains(errstr, "l.")
 605                                        && !tmp.empty()
 606                                        && !prefixIs(tmp, "! ")
 607                                        && !contains(tmp, "(job aborted")) {
 608                                         errstr += tmp;
 609                                         errstr += "\n";
 610                                         getline(ifs, tmp);
 611                                 }
 612                                 lyxerr[Debug::LATEX]
 613                                         << "line: " << line << '\n'
 614                                         << "Desc: " << desc << '\n'
 615                                         << "Text: " << errstr << endl;
 616                                 if (line == last_line)
 617                                         ++line_count;
 618                                 else {
 619                                         line_count = 1;
 620                                         last_line = line;
 621                                 }
 622                                 if (line_count <= 5) {
 623                                         terr.insertError(line, desc, errstr);
 624                                         ++num_errors;
 625                                 }
 626                         }
 627                 } else {
 628                         // information messages, TeX warnings and other
 629                         // warnings we have not caught earlier.
 630                         if (prefixIs(token, "Overfull ")) {
 631                                 retval |= TEX_WARNING;
 632                         } else if (prefixIs(token, "Underfull ")) {
 633                                 retval |= TEX_WARNING;
 634                         } else if (contains(token, "Rerun to get citations")) {
 635                                 // Natbib seems to use this.
 636                                 retval |= UNDEF_CIT;
 637                         } else if (contains(token, "No pages of output")) {
 638                                 // A dvi file was not created
 639                                 retval |= NO_OUTPUT;
 640                         } else if (contains(token, "That makes 100 errors")) {
 641                                 // More than 100 errors were reprted
 642                                 retval |= TOO_MANY_ERRORS;
 643                         }
 644                 }
 645         }
 646         lyxerr[Debug::LATEX] << "Log line: " << token << endl;
 647         return retval;
 648 }
 649
 650
 651 void LaTeX::deplog(DepTable & head)
 652 {
 653         // This function reads the LaTeX log file end extracts all the external
 654         // files used by the LaTeX run. The files are then entered into the
 655         // dependency file.
 656
 657         string const logfile = OnlyFilename(ChangeExtension(file, ".log"));
 658
 659         LRegex reg1("\\)* *\\(([^ )]+).*");
 660         LRegex reg2("File: ([^ ]+).*");
 661         LRegex reg3("No file ([^ ]+)\\..*");
 662         LRegex reg4("\\\\openout[0-9]+.*=.*`([^ ]+)'\\..*");
 663         // If an index should be created, MikTex does not write a line like
 664         //    \openout# = 'sample,idx'.
 665         // but intstead only a line like this into the log:
 666         //   Writing index file sample.idx
 667         LRegex reg5("Writing index file ([^ ]+).*");
 668         LRegex unwanted("^.*\\.(aux|log|dvi|bbl|ind|glo)$");
 669
 670         ifstream ifs(logfile.c_str());
 671         while (ifs) {
 672                 // Ok, the scanning of files here is not sufficient.
 673                 // Sometimes files are named by "File: xxx" only
 674                 // So I think we should use some regexps to find files instead.
 675                 // "(\([^ ]+\)"   should match the "(file " variant
 676                 // "File: \([^ ]+\)" should match the "File: file" variant
 677                 string foundfile;
 678                 string token;
 679                 getline(ifs, token);
 680                 token = strip(token, '\r');
 681                 if (token.empty()) continue;
 682
 683                 if (reg1.exact_match(token)) {
 684                         LRegex::SubMatches const & sub = reg1.exec(token);
 685                         foundfile = LSubstring(token, sub[1].first,
 686                                                sub[1].second);
 687                 } else if (reg2.exact_match(token)) {
 688                         LRegex::SubMatches const & sub = reg2.exec(token);
 689                         foundfile = LSubstring(token, sub[1].first,
 690                                                sub[1].second);
 691                 } else if (reg3.exact_match(token)) {
 692                         LRegex::SubMatches const & sub = reg3.exec(token);
 693                         foundfile = LSubstring(token, sub[1].first,
 694                                                sub[1].second);
 695                 } else if (reg4.exact_match(token)) {
 696                         LRegex::SubMatches const & sub = reg4.exec(token);
 697                         foundfile = LSubstring(token, sub[1].first,
 698                                                sub[1].second);
 699                 } else if (reg5.exact_match(token)) {
 700                         LRegex::SubMatches const & sub = reg5.exec(token);
 701                         foundfile = LSubstring(token, sub[1].first,
 702                                                sub[1].second);
 703                 } else {
 704                         continue;
 705                 }
 706
 707                 // convert from native os path to unix path
 708                 foundfile = os::internal_path(foundfile);
 709
 710                 lyxerr[Debug::DEPEND] << "Found file: "
 711                                       << foundfile << endl;
 712
 713                 // Ok now we found a file.
 714                 // Now we should make sure that this is a file that we can
 715                 // access through the normal paths.
 716                 // We will not try any fancy search methods to
 717                 // find the file.
 718
 719                 // (1) foundfile is an
 720                 //     absolute path and should
 721                 //     be inserted.
 722                 if (AbsolutePath(foundfile)) {
 723                         lyxerr[Debug::DEPEND] << "AbsolutePath file: "
 724                                               << foundfile << endl;
 725                         // On initial insert we want to do the update at once
 726                         // since this file can not be a file generated by
 727                         // the latex run.
 728                         if (FileInfo(foundfile).exist())
 729                                 head.insert(foundfile, true);
 730                 }
 731
 732                 // (2) foundfile is in the tmpdir
 733                 //     insert it into head
 734                 else if (FileInfo(OnlyFilename(foundfile)).exist()) {
 735                         if (unwanted.exact_match(foundfile)) {
 736                                 lyxerr[Debug::DEPEND]
 737                                         << "We don't want "
 738                                         << OnlyFilename(foundfile)
 739                                         << " in the dep file"
 740                                         << endl;
 741                         } else if (suffixIs(foundfile, ".tex")) {
 742                                 // This is a tex file generated by LyX
 743                                 // and latex is not likely to change this
 744                                 // during its runs.
 745                                 lyxerr[Debug::DEPEND]
 746                                         << "Tmpdir TeX file: "
 747                                         << OnlyFilename(foundfile)
 748                                         << endl;
 749                                 head.insert(foundfile, true);
 750                         } else {
 751                                 lyxerr[Debug::DEPEND]
 752                                         << "In tmpdir file:"
 753                                         << OnlyFilename(foundfile)
 754                                         << endl;
 755                                 head.insert(OnlyFilename(foundfile));
 756                         }
 757                 } else
 758                         lyxerr[Debug::DEPEND]
 759                                 << "Not a file or we are unable to find it."
 760                                 << endl;
 761         }
 762
 763         // Make sure that the main .tex file is in the dependancy file.
 764         head.insert(OnlyFilename(file), true);
 765 }