src/LaTeX.C

   1 /* This file is part of
   2  * ======================================================
   3  *
   4  *           LyX, The Document Processor
   5  *           Copyright 1995 Matthias Ettrich
   6  *           Copyright 1995-2000 The LyX Team.
   7  *
   8  *           This file is Copyright 1996-2000
   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 "bufferlist.h"
  32 #include "minibuffer.h"
  33 #include "gettext.h"
  34 #include "lyx_gui_misc.h"
  35
  36 using std::ifstream;
  37 using std::getline;
  38 using std::endl;
  39 using std::vector;
  40 using std::set;
  41
  42 // TODO: in no particular order
  43 // - get rid of the extern BufferList and the call to
  44 //   BufferList::updateIncludedTeXfiles, this should either
  45 //   be done before calling LaTeX::funcs or in a completely
  46 //   different way.
  47 // - the bibtex command options should be supported.
  48 // - the makeindex style files should be taken care of with
  49 //   the dependency mechanism.
  50 // - makeindex commandline options should be supported
  51 // - somewhere support viewing of bibtex and makeindex log files.
  52 // - we should perhaps also scan the bibtex log file
  53 // - we should perhaps also scan the bibtex log file
  54
  55 extern BufferList bufferlist;
  56
  57 /*
  58  * CLASS TEXERRORS
  59  */
  60
  61 void TeXErrors::insertError(int line, string const & error_desc,
  62                             string const & error_text)
  63 {
  64         Error newerr(line, error_desc, error_text);
  65         errors.push_back(newerr);
  66 }
  67
  68 /*
  69  * CLASS LaTeX
  70  */
  71
  72 LaTeX::LaTeX(string const & latex, string const & f, string const & p)
  73                 : cmd(latex), file(f), path(p)
  74 {
  75         num_errors = 0;
  76         depfile = file + ".dep";
  77         if (prefixIs(cmd, "pdf")) // Do we use pdflatex ?
  78                 depfile += "-pdf";
  79 }
  80
  81
  82 void LaTeX::deleteFilesOnError() const
  83 {
  84         // currently just a dummy function.
  85
  86         // What files do we have to delete?
  87
  88         // This will at least make latex do all the runs
  89         lyx::unlink(depfile);
  90
  91         // but the reason for the error might be in a generated file...
  92
  93         string ofname = OnlyFilename(file);
  94
  95         // bibtex file
  96         string bbl = ChangeExtension(ofname, ".bbl");
  97         lyx::unlink(bbl);
  98
  99         // makeindex file
 100         string ind = ChangeExtension(ofname, ".ind");
 101         lyx::unlink(ind);
 102
 103         // Also remove the aux file
 104         string aux = ChangeExtension(ofname, ".aux");
 105         lyx::unlink(aux);
 106 }
 107
 108
 109 int LaTeX::run(TeXErrors & terr, MiniBuffer * minib)
 110         // We know that this function will only be run if the lyx buffer
 111         // has been changed. We also know that a newly written .tex file
 112         // is always different from the previous one because of the date
 113         // in it. However it seems safe to run latex (at least) on time each
 114         // time the .tex file changes.
 115 {
 116         int scanres = NO_ERRORS;
 117         unsigned int count = 0; // number of times run
 118         num_errors = 0; // just to make sure.
 119         const unsigned int MAX_RUN = 6;
 120         DepTable head; // empty head
 121         bool rerun = false; // rerun requested
 122
 123         // The class LaTeX does not know the temp path.
 124         bufferlist.updateIncludedTeXfiles(lyx::getcwd()); //GetCWD());
 125
 126         // Never write the depfile if an error was encountered.
 127
 128         // 0
 129         // first check if the file dependencies exist:
 130         //     ->If it does exist
 131         //             check if any of the files mentioned in it have
 132         //             changed (done using a checksum).
 133         //                 -> if changed:
 134         //                        run latex once and
 135         //                        remake the dependency file
 136         //                 -> if not changed:
 137         //                        just return there is nothing to do for us.
 138         //     ->if it doesn't exist
 139         //             make it and
 140         //             run latex once (we need to run latex once anyway) and
 141         //             remake the dependency file.
 142         //
 143
 144         FileInfo fi(depfile);
 145         bool had_depfile = fi.exist();
 146         bool run_bibtex = false;
 147         string aux_file = OnlyFilename(ChangeExtension(file, "aux"));
 148
 149         if (had_depfile) {
 150                 lyxerr[Debug::DEPEND] << "Dependency file exists" << endl;
 151                 // Read the dep file:
 152                 head.read(depfile);
 153                 // Update the checksums
 154                 head.update();
 155                 if (!head.sumchange()) {
 156                         lyxerr[Debug::DEPEND] << "return no_change" << endl;
 157                         return NO_CHANGE;
 158                 }
 159                 lyxerr[Debug::DEPEND]
 160                         << "Dependency file has changed" << endl;
 161
 162                 if (head.extchanged(".bib") || head.extchanged(".bst"))
 163                         run_bibtex = true;
 164         } else
 165                 lyxerr[Debug::DEPEND]
 166                         << "Dependency file does not exist" << endl;
 167
 168         /// We scan the aux file even when had_depfile = false,
 169         /// because we can run pdflatex on the file after running latex on it,
 170         /// in which case we will not need to run bibtex again.
 171         vector<Aux_Info> bibtex_info_old;
 172         if (!run_bibtex)
 173                 bibtex_info_old = scanAuxFiles(aux_file);
 174
 175         ++count;
 176         lyxerr[Debug::LATEX] << "Run #" << count << endl;
 177         WriteStatus(minib, string(_("LaTeX run number ")) + tostr(count));
 178         this->operator()();
 179         scanres = scanLogFile(terr);
 180         if (scanres & ERROR_RERUN) {
 181                 lyxerr[Debug::LATEX] << "Rerunning LaTeX" << endl;
 182                 this->operator()();
 183                 scanres = scanLogFile(terr);
 184         }
 185
 186         if (scanres & ERRORS) {
 187                 deleteFilesOnError();
 188                 return scanres; // return on error
 189         }
 190
 191         vector<Aux_Info> const bibtex_info = scanAuxFiles(aux_file);
 192         if (!run_bibtex && bibtex_info_old != bibtex_info)
 193                 run_bibtex = true;
 194
 195         // update the dependencies.
 196         deplog(head); // reads the latex log
 197         head.update();
 198
 199         // 0.5
 200         // At this point we must run external programs if needed.
 201         // makeindex will be run if a .idx file changed or was generated.
 202         // And if there were undefined citations or changes in references
 203         // the .aux file is checked for signs of bibtex. Bibtex is then run
 204         // if needed.
 205
 206         // run makeindex
 207         if (head.haschanged(OnlyFilename(ChangeExtension(file, ".idx")))) {
 208                 // no checks for now
 209                 lyxerr[Debug::LATEX] << "Running MakeIndex." << endl;
 210                 WriteStatus(minib, _("Running MakeIndex."));
 211                 rerun = runMakeIndex(OnlyFilename(ChangeExtension(file, ".idx")));
 212         }
 213
 214         // run bibtex
 215         // if (scanres & UNDEF_CIT || scanres & RERUN || run_bibtex)
 216         if (scanres & UNDEF_CIT || run_bibtex) {
 217                 // Here we must scan the .aux file and look for
 218                 // "\bibdata" and/or "\bibstyle". If one of those
 219                 // tags is found -> run bibtex and set rerun = true;
 220                 // no checks for now
 221                 lyxerr[Debug::LATEX] << "Running BibTeX." << endl;
 222                 WriteStatus(minib, _("Running BibTeX."));
 223                 updateBibtexDependencies(head, bibtex_info);
 224                 rerun |= runBibTeX(bibtex_info);
 225         } else if (!had_depfile)
 226                 /// If we run pdflatex on the file after running latex on it,
 227                 /// then we do not need to run bibtex, but we do need to
 228                 /// insert the .bib and .bst files into the .dep-pdf file.
 229                 updateBibtexDependencies(head, bibtex_info);
 230
 231         // 1
 232         // we know on this point that latex has been run once (or we just
 233         // returned) and the question now is to decide if we need to run
 234         // it any more. This is done by asking if any of the files in the
 235         // dependency file has changed. (remember that the checksum for
 236         // a given file is reported to have changed if it just was created)
 237         //     -> if changed or rerun == true:
 238         //             run latex once more and
 239         //             update the dependency structure
 240         //     -> if not changed:
 241         //             we does nothing at this point
 242         //
 243         if (rerun || head.sumchange()) {
 244                 rerun = false;
 245                 ++count;
 246                 lyxerr[Debug::DEPEND]
 247                         << "Dep. file has changed or rerun requested" << endl;
 248                 lyxerr[Debug::LATEX]
 249                         << "Run #" << count << endl;
 250                 WriteStatus(minib,
 251                             string(_("LaTeX run number ")) + tostr(count));
 252                 this->operator()();
 253                 scanres = scanLogFile(terr);
 254                 if (scanres & ERRORS) {
 255                         deleteFilesOnError();
 256                         return scanres; // return on error
 257                 }
 258
 259                 // update the depedencies
 260                 deplog(head); // reads the latex log
 261                 head.update();
 262         } else {
 263                 lyxerr[Debug::DEPEND] << "Dep. file has NOT changed" << endl;
 264         }
 265
 266         // 1.5
 267         // The inclusion of files generated by external programs like
 268         // makeindex or bibtex might have done changes to pagenumbereing,
 269         // etc. And because of this we must run the external programs
 270         // again to make sure everything is redone correctly.
 271         // Also there should be no need to run the external programs any
 272         // more after this.
 273
 274         // run makeindex if the <file>.idx has changed or was generated.
 275         if (head.haschanged(OnlyFilename(ChangeExtension(file, ".idx")))) {
 276                 // no checks for now
 277                 lyxerr[Debug::LATEX] << "Running MakeIndex." << endl;
 278                 WriteStatus(minib, _("Running MakeIndex."));
 279                 rerun = runMakeIndex(OnlyFilename(ChangeExtension(file, ".idx")));
 280         }
 281
 282         // 2
 283         // we will only run latex more if the log file asks for it.
 284         // or if the sumchange() is true.
 285         //     -> rerun asked for:
 286         //             run latex and
 287         //             remake the dependency file
 288         //             goto 2 or return if max runs are reached.
 289         //     -> rerun not asked for:
 290         //             just return (fall out of bottom of func)
 291         //
 292         while ((head.sumchange() || rerun || (scanres & RERUN))
 293                && count < MAX_RUN) {
 294                 // Yes rerun until message goes away, or until
 295                 // MAX_RUNS are reached.
 296                 rerun = false;
 297                 ++count;
 298                 lyxerr[Debug::LATEX] << "Run #" << count << endl;
 299                 WriteStatus(minib, string(_("LaTeX run number ")) + tostr(count));
 300                 this->operator()();
 301                 scanres = scanLogFile(terr);
 302                 if (scanres & ERRORS) {
 303                         deleteFilesOnError();
 304                         return scanres; // return on error
 305                 }
 306
 307                 // keep this updated
 308                 head.update();
 309         }
 310
 311         // Write the dependencies to file.
 312         head.write(depfile);
 313         lyxerr[Debug::LATEX] << "Done." << endl;
 314         return scanres;
 315 }
 316
 317
 318 int LaTeX::operator()()
 319 {
 320 #ifndef __EMX__
 321         string tmp = cmd + ' ' + QuoteName(file) + " > /dev/null";
 322 #else // cmd.exe (OS/2) causes SYS0003 error at "/dev/null"
 323         string tmp = cmd + ' ' + file + " > nul";
 324 #endif
 325         Systemcalls one;
 326         return one.startscript(Systemcalls::System, tmp);
 327 }
 328
 329
 330 bool LaTeX::runMakeIndex(string const & f)
 331 {
 332         lyxerr[Debug::LATEX] << "idx file has been made,"
 333                 " running makeindex on file "
 334                              <<  f << endl;
 335
 336         // It should be possible to set the switches for makeindex
 337         // sorting style and such. It would also be very convenient
 338         // to be able to make style files from within LyX. This has
 339         // to come for a later time. (0.13 perhaps?)
 340         string tmp = "makeindex -c -q ";
 341         tmp += f;
 342         Systemcalls one;
 343         one.startscript(Systemcalls::System, tmp);
 344         return true;
 345 }
 346
 347
 348 vector<Aux_Info> const
 349 LaTeX::scanAuxFiles(string const & file)
 350 {
 351         vector<Aux_Info> result;
 352
 353         result.push_back(scanAuxFile(file));
 354
 355         for (int i = 1; i < 1000; ++i) {
 356                 string file2 = ChangeExtension(file, "") + "." + tostr(i)
 357                         + ".aux";
 358                 FileInfo fi(file2);
 359                 if (!fi.exist())
 360                         break;
 361                 result.push_back(scanAuxFile(file2));
 362         }
 363         return result;
 364 }
 365
 366
 367 Aux_Info const LaTeX::scanAuxFile(string const & file)
 368 {
 369         Aux_Info result;
 370         result.aux_file = file;
 371         scanAuxFile(file, result);
 372         return result;
 373 }
 374
 375
 376 void LaTeX::scanAuxFile(string const & file, Aux_Info & aux_info)
 377 {
 378         lyxerr[Debug::LATEX] << "Scanning aux file: " << file << endl;
 379
 380         ifstream ifs(file.c_str());
 381         string token;
 382         LRegex reg1("\\\\citation\\{([^}]+)\\}");
 383         LRegex reg2("\\\\bibdata\\{([^}]+)\\}");
 384         LRegex reg3("\\\\bibstyle\\{([^}]+)\\}");
 385         LRegex reg4("\\\\@input\\{([^}]+)\\}");
 386
 387         while (getline(ifs, token)) {
 388                 if (reg1.exact_match(token)) {
 389                         LRegex::SubMatches const & sub = reg1.exec(token);
 390                         string data = LSubstring(token, sub[1].first,
 391                                                  sub[1].second);
 392                         while (!data.empty()) {
 393                                 string citation;
 394                                 data = split(data, citation, ',');
 395                                 lyxerr[Debug::LATEX] << "Citation: "
 396                                                      << citation << endl;
 397                                 aux_info.citations.insert(citation);
 398                         }
 399                 } else if (reg2.exact_match(token)) {
 400                         LRegex::SubMatches const & sub = reg2.exec(token);
 401                         string data = LSubstring(token, sub[1].first,
 402                                                  sub[1].second);
 403                         // data is now all the bib files separated by ','
 404                         // get them one by one and pass them to the helper
 405                         while (!data.empty()) {
 406                                 string database;
 407                                 data = split(data, database, ',');
 408                                 database = ChangeExtension(database, "bib");
 409                                 lyxerr[Debug::LATEX] << "Bibtex database: `"
 410                                                      << database << "'" << endl;
 411                                 aux_info.databases.insert(database);
 412                         }
 413                 } else if (reg3.exact_match(token)) {
 414                         LRegex::SubMatches const & sub = reg3.exec(token);
 415                         string style = LSubstring(token, sub[1].first,
 416                                                   sub[1].second);
 417                         // token is now the style file
 418                         // pass it to the helper
 419                         style = ChangeExtension(style, "bst");
 420                         lyxerr[Debug::LATEX] << "Bibtex style: `"
 421                                              << style << "'" << endl;
 422                         aux_info.styles.insert(style);
 423                 } else if (reg4.exact_match(token)) {
 424                         LRegex::SubMatches const & sub = reg4.exec(token);
 425                         string file2 = LSubstring(token, sub[1].first,
 426                                                   sub[1].second);
 427                         scanAuxFile(file2, aux_info);
 428                 }
 429         }
 430 }
 431
 432
 433 void LaTeX::updateBibtexDependencies(DepTable & dep,
 434                                      vector<Aux_Info> const & bibtex_info)
 435 {
 436         // Since a run of Bibtex mandates more latex runs it is ok to
 437         // remove all ".bib" and ".bst" files.
 438         dep.remove_files_with_extension(".bib");
 439         dep.remove_files_with_extension(".bst");
 440         string aux = OnlyFilename(ChangeExtension(file, ".aux"));
 441
 442         for (vector<Aux_Info>::const_iterator it = bibtex_info.begin();
 443              it != bibtex_info.end(); ++it) {
 444                 for (set<string>::const_iterator it2 = it->databases.begin();
 445                      it2 != it->databases.end(); ++it2) {
 446                         string file = findtexfile(*it2, "bib");
 447                         if (!file.empty())
 448                                 dep.insert(file, true);
 449                 }
 450
 451                 for (set<string>::const_iterator it2 = it->styles.begin();
 452                      it2 != it->styles.end(); ++it2) {
 453                         string file = findtexfile(*it2, "bst");
 454                         if (!file.empty())
 455                                 dep.insert(file, true);
 456                 }
 457         }
 458 }
 459
 460
 461 bool LaTeX::runBibTeX(vector<Aux_Info> const & bibtex_info)
 462 {
 463         bool result = false;
 464         for (vector<Aux_Info>::const_iterator it = bibtex_info.begin();
 465              it != bibtex_info.end(); ++it) {
 466                 if (it->databases.empty())
 467                         continue;
 468                 result = true;
 469
 470                 string tmp = "bibtex ";
 471                 tmp += OnlyFilename(ChangeExtension(it->aux_file, string()));
 472                 Systemcalls one;
 473                 one.startscript(Systemcalls::System, tmp);
 474         }
 475         // Return whether bibtex was run
 476         return result;
 477 }
 478
 479
 480 int LaTeX::scanLogFile(TeXErrors & terr)
 481 {
 482         int last_line = -1;
 483         int line_count = 1;
 484         int retval = NO_ERRORS;
 485         string tmp = OnlyFilename(ChangeExtension(file, ".log"));
 486         lyxerr[Debug::LATEX] << "Log file: " << tmp << endl;
 487         ifstream ifs(tmp.c_str());
 488
 489         string token;
 490         while (getline(ifs, token)) {
 491                 lyxerr[Debug::LATEX] << "Log line: " << token << endl;
 492
 493                 if (token.empty())
 494                         continue;
 495
 496                 if (prefixIs(token, "LaTeX Warning:")) {
 497                         // Here shall we handle different
 498                         // types of warnings
 499                         retval |= LATEX_WARNING;
 500                         lyxerr[Debug::LATEX] << "LaTeX Warning." << endl;
 501                         if (contains(token, "Rerun to get cross-references")) {
 502                                 retval |= RERUN;
 503                                 lyxerr[Debug::LATEX]
 504                                         << "We should rerun." << endl;
 505                         } else if (contains(token, "Citation")
 506                                    && contains(token, "on page")
 507                                    && contains(token, "undefined")) {
 508                                 retval |= UNDEF_CIT;
 509                         }
 510                 } else if (prefixIs(token, "Package")) {
 511                         // Package warnings
 512                         retval |= PACKAGE_WARNING;
 513                         if (contains(token, "natbib Warning:")) {
 514                                 // Natbib warnings
 515                                 if (contains(token, "Citation")
 516                                     && contains(token, "on page")
 517                                     && contains(token, "undefined")) {
 518                                         retval |= UNDEF_CIT;
 519                                 }
 520                         } else if (contains(token, "run BibTeX")) {
 521                                 retval |= UNDEF_CIT;
 522                         } else if (contains(token, "Rerun LaTeX.")) {
 523                                 // at least longtable.sty might use this.
 524                                 retval |= RERUN;
 525                         }
 526                 } else if (prefixIs(token, "! ")) {
 527                         // Ok, we have something that looks like a TeX Error
 528                         // but what do we really have.
 529
 530                         // Just get the error description:
 531                         string desc(token, 2);
 532                         if (contains(token, "LaTeX Error:"))
 533                                 retval |= LATEX_ERROR;
 534                         // get the next line
 535                         string tmp;
 536                         int count = 0;
 537                         do {
 538                                 if (!getline(ifs, tmp))
 539                                         break;
 540                                 if (++count > 10)
 541                                         break;
 542                         } while (!prefixIs(tmp, "l."));
 543                         if (prefixIs(tmp, "l.")) {
 544                                 // we have a latex error
 545                                 retval |=  TEX_ERROR;
 546                                 if (contains(desc, "Package babel Error: You haven't defined the language"))
 547                                         retval |= ERROR_RERUN;
 548                                 // get the line number:
 549                                 int line = 0;
 550                                 sscanf(tmp.c_str(), "l.%d", &line);
 551                                 // get the rest of the message:
 552                                 string errstr(tmp, tmp.find(' '));
 553                                 errstr += '\n';
 554                                 getline(ifs, tmp);
 555                                 while (!contains(errstr, "l.")
 556                                        && !tmp.empty()
 557                                        && !prefixIs(tmp, "! ")
 558                                        && !contains(tmp, "(job aborted")) {
 559                                         errstr += tmp;
 560                                         errstr += "\n";
 561                                         getline(ifs, tmp);
 562                                 }
 563                                 lyxerr[Debug::LATEX]
 564                                         << "line: " << line << '\n'
 565                                         << "Desc: " << desc << '\n'
 566                                         << "Text: " << errstr << endl;
 567                                 if (line == last_line)
 568                                         ++line_count;
 569                                 else {
 570                                         line_count = 1;
 571                                         last_line = line;
 572                                 }
 573                                 if (line_count <= 5) {
 574                                         terr.insertError(line, desc, errstr);
 575                                         ++num_errors;
 576                                 }
 577                         }
 578                 } else {
 579                         // information messages, TeX warnings and other
 580                         // warnings we have not caught earlier.
 581                         if (prefixIs(token, "Overfull ")) {
 582                                 retval |= TEX_WARNING;
 583                         } else if (prefixIs(token, "Underfull ")) {
 584                                 retval |= TEX_WARNING;
 585                         } else if (contains(token, "Rerun to get citations")) {
 586                                 // Natbib seems to use this.
 587                                 retval |= UNDEF_CIT;
 588                         } else if (contains(token, "No pages of output")) {
 589                                 // A dvi file was not created
 590                                 retval |= NO_OUTPUT;
 591                         } else if (contains(token, "That makes 100 errors")) {
 592                                 // More than 100 errors were reprted
 593                                 retval |= TOO_MANY_ERRORS;
 594                         }
 595                 }
 596         }
 597         lyxerr[Debug::LATEX] << "Log line: " << token << endl;
 598         return retval;
 599 }
 600
 601
 602 void LaTeX::deplog(DepTable & head)
 603 {
 604         // This function reads the LaTeX log file end extracts all the external
 605         // files used by the LaTeX run. The files are then entered into the
 606         // dependency file.
 607
 608         string const logfile = OnlyFilename(ChangeExtension(file, ".log"));
 609
 610         LRegex reg1(")* *\\(([^ \\)]+).*");
 611         LRegex reg2("File: ([^ ]+).*");
 612         LRegex reg3("No file ([^ ]+)\\..*");
 613         LRegex reg4("\\\\openout[0-9]+.*=.*`([^ ]+)'\\..*");
 614         LRegex unwanted("^.*\\.(aux|log|dvi|bbl|ind|glo)$");
 615
 616         ifstream ifs(logfile.c_str());
 617         while (ifs) {
 618                 // Ok, the scanning of files here is not sufficient.
 619                 // Sometimes files are named by "File: xxx" only
 620                 // So I think we should use some regexps to find files instead.
 621                 // "(\([^ ]+\)"   should match the "(file " variant
 622                 // "File: \([^ ]+\)" should match the "File: file" variant
 623                 string foundfile;
 624                 string token;
 625                 getline(ifs, token);
 626                 if (token.empty()) continue;
 627
 628                 if (reg1.exact_match(token)) {
 629                         LRegex::SubMatches const & sub = reg1.exec(token);
 630                         foundfile = LSubstring(token, sub[1].first,
 631                                                sub[1].second);
 632                 } else if (reg2.exact_match(token)) {
 633                         LRegex::SubMatches const & sub = reg2.exec(token);
 634                         foundfile = LSubstring(token, sub[1].first,
 635                                                sub[1].second);
 636                 } else if (reg3.exact_match(token)) {
 637                         LRegex::SubMatches const & sub = reg3.exec(token);
 638                         foundfile = LSubstring(token, sub[1].first,
 639                                                sub[1].second);
 640                 } else if (reg4.exact_match(token)) {
 641                         LRegex::SubMatches const & sub = reg4.exec(token);
 642                         foundfile = LSubstring(token, sub[1].first,
 643                                                sub[1].second);
 644                 } else {
 645                         continue;
 646                 }
 647
 648                 lyxerr[Debug::DEPEND] << "Found file: "
 649                                       << foundfile << endl;
 650
 651                 // Ok now we found a file.
 652                 // Now we should make sure that this is a file that we can
 653                 // access through the normal paths.
 654                 // We will not try any fancy search methods to
 655                 // find the file.
 656
 657                 // (1) foundfile is an
 658                 //     absolute path and should
 659                 //     be inserted.
 660                 if (AbsolutePath(foundfile)) {
 661                         lyxerr[Debug::DEPEND] << "AbsolutePath file: "
 662                                               << foundfile << endl;
 663                         // On initial insert we want to do the update at once
 664                         // since this file can not be a file generated by
 665                         // the latex run.
 666                         head.insert(foundfile, true);
 667                 }
 668
 669                 // (2) foundfile is in the tmpdir
 670                 //     insert it into head
 671                 else if (FileInfo(OnlyFilename(foundfile)).exist()) {
 672                         if (unwanted.exact_match(foundfile)) {
 673                                 lyxerr[Debug::DEPEND]
 674                                         << "We don't want "
 675                                         << OnlyFilename(foundfile)
 676                                         << " in the dep file"
 677                                         << endl;
 678                         } else if (suffixIs(foundfile, ".tex")) {
 679                                 // This is a tex file generated by LyX
 680                                 // and latex is not likely to change this
 681                                 // during its runs.
 682                                 lyxerr[Debug::DEPEND]
 683                                         << "Tmpdir TeX file: "
 684                                         << OnlyFilename(foundfile)
 685                                         << endl;
 686                                 head.insert(foundfile, true);
 687                         } else {
 688                                 lyxerr[Debug::DEPEND]
 689                                         << "In tmpdir file:"
 690                                         << OnlyFilename(foundfile)
 691                                         << endl;
 692                                 head.insert(OnlyFilename(foundfile));
 693                         }
 694                 } else
 695                         lyxerr[Debug::DEPEND]
 696                                 << "Not a file or we are unable to find it."
 697                                 << endl;
 698         }
 699 }