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
  40 // TODO: in no particular order
  41 // - get rid of the extern BufferList and the call to
  42 //   BufferList::updateIncludedTeXfiles, this should either
  43 //   be done before calling LaTeX::funcs or in a completely
  44 //   different way.
  45 // - the bibtex command options should be supported.
  46 // - the makeindex style files should be taken care of with
  47 //   the dependency mechanism.
  48 // - makeindex commandline options should be supported
  49 // - somewhere support viewing of bibtex and makeindex log files.
  50 // - we should perhaps also scan the bibtex log file
  51 // - we should perhaps also scan the bibtex log file
  52
  53 extern BufferList bufferlist;
  54
  55 /*
  56  * CLASS TEXERRORS
  57  */
  58
  59 void TeXErrors::insertError(int line, string const & error_desc,
  60                             string const & error_text)
  61 {
  62         Error newerr(line, error_desc, error_text);
  63         errors.push_back(newerr);
  64 }
  65
  66 /*
  67  * CLASS LaTeX
  68  */
  69
  70 LaTeX::LaTeX(string const & latex, string const & f, string const & p)
  71                 : cmd(latex), file(f), path(p)
  72 {
  73         num_errors = 0;
  74         depfile = file + ".dep";
  75         if (prefixIs(cmd, "pdf")) // Do we use pdflatex ?
  76                 depfile += "-pdf";
  77 }
  78
  79
  80 void LaTeX::deleteFilesOnError() const
  81 {
  82         // currently just a dummy function.
  83
  84         // What files do we have to delete?
  85
  86         // This will at least make latex do all the runs
  87         lyx::unlink(depfile);
  88
  89         // but the reason for the error might be in a generated file...
  90
  91         string ofname = OnlyFilename(file);
  92
  93         // bibtex file
  94         string bbl = ChangeExtension(ofname, ".bbl");
  95         lyx::unlink(bbl);
  96
  97         // makeindex file
  98         string ind = ChangeExtension(ofname, ".ind");
  99         lyx::unlink(ind);
 100
 101         // Also remove the aux file
 102         string aux = ChangeExtension(ofname, ".aux");
 103         lyx::unlink(aux);
 104 }
 105
 106
 107 int LaTeX::run(TeXErrors & terr, MiniBuffer * minib)
 108         // We know that this function will only be run if the lyx buffer
 109         // has been changed. We also know that a newly written .tex file
 110         // is always different from the previous one because of the date
 111         // in it. However it seems safe to run latex (at least) on time each
 112         // time the .tex file changes.
 113 {
 114         int scanres = LaTeX::NO_ERRORS;
 115         unsigned int count = 0; // number of times run
 116         num_errors = 0; // just to make sure.
 117         const unsigned int MAX_RUN = 6;
 118         DepTable head; // empty head
 119         bool rerun = false; // rerun requested
 120
 121         // The class LaTeX does not know the temp path.
 122         bufferlist.updateIncludedTeXfiles(lyx::getcwd()); //GetCWD());
 123
 124         // Never write the depfile if an error was encountered.
 125
 126         // 0
 127         // first check if the file dependencies exist:
 128         //     ->If it does exist
 129         //             check if any of the files mentioned in it have
 130         //             changed (done using a checksum).
 131         //                 -> if changed:
 132         //                        run latex once and
 133         //                        remake the dependency file
 134         //                 -> if not changed:
 135         //                        just return there is nothing to do for us.
 136         //     ->if it doesn't exist
 137         //             make it and
 138         //             run latex once (we need to run latex once anyway) and
 139         //             remake the dependency file.
 140         //
 141         FileInfo fi(depfile);
 142         bool run_bibtex = false;
 143         if (fi.exist()) {
 144                 // Read the dep file:
 145                 head.read(depfile);
 146                 // Update the checksums
 147                 head.update();
 148
 149                 lyxerr[Debug::DEPEND] << "Dependency file exists" << endl;
 150                 if (head.sumchange()) {
 151                         ++count;
 152                         lyxerr[Debug::DEPEND]
 153                                 << "Dependency file has changed" << endl;
 154                         lyxerr[Debug::LATEX]
 155                                 << "Run #" << count << endl;
 156                         WriteStatus(minib,
 157                                     string(_("LaTeX run number ")) + tostr(count));
 158                         this->operator()();
 159                         scanres = scanLogFile(terr);
 160                         if (scanres & LaTeX::ERRORS) {
 161                                 deleteFilesOnError();
 162                                 return scanres; // return on error
 163                         }
 164                         run_bibtex = scanAux(head);
 165                         if (run_bibtex)
 166                                 lyxerr[Debug::DEPEND]
 167                                         << "Bibtex demands rerun" << endl;
 168                 } else {
 169                         lyxerr[Debug::DEPEND] << "return no_change" << endl;
 170                         return LaTeX::NO_CHANGE;
 171                 }
 172         } else {
 173                 ++count;
 174                 lyxerr[Debug::DEPEND]
 175                         << "Dependency file does not exist" << endl;
 176
 177                 lyxerr[Debug::LATEX]
 178                         << "Run #" << count << endl;
 179                 head.insert(file, true);
 180                 WriteStatus(minib,
 181                             string(_("LaTeX run number ")) + tostr(count));
 182                 this->operator()();
 183                 scanres = scanLogFile(terr);
 184                 if (scanres & LaTeX::ERRORS) {
 185                         deleteFilesOnError();
 186                         return scanres; // return on error
 187                 }
 188
 189         }
 190
 191         // update the dependencies.
 192         deplog(head); // reads the latex log
 193         head.update();
 194
 195         // 0.5
 196         // At this point we must run external programs if needed.
 197         // makeindex will be run if a .idx file changed or was generated.
 198         // And if there were undefined citations or changes in references
 199         // the .aux file is checked for signs of bibtex. Bibtex is then run
 200         // if needed.
 201
 202         // run makeindex
 203         if (head.haschanged(OnlyFilename(ChangeExtension(file, ".idx")))) {
 204                 // no checks for now
 205                 lyxerr[Debug::LATEX] << "Running MakeIndex." << endl;
 206                 WriteStatus(minib, _("Running MakeIndex."));
 207                 rerun = runMakeIndex(OnlyFilename(ChangeExtension(file, ".idx")));
 208         }
 209
 210         // run bibtex
 211         if (scanres & LaTeX::UNDEF_CIT
 212             || scanres & LaTeX::RERUN
 213             || run_bibtex) {
 214                 // Here we must scan the .aux file and look for
 215                 // "\bibdata" and/or "\bibstyle". If one of those
 216                 // tags is found -> run bibtex and set rerun = true;
 217                 // no checks for now
 218                 lyxerr[Debug::LATEX] << "Running BibTeX." << endl;
 219                 WriteStatus(minib, _("Running BibTeX."));
 220                 rerun = runBibTeX(head);
 221         }
 222
 223         // 1
 224         // we know on this point that latex has been run once (or we just
 225         // returned) and the question now is to decide if we need to run
 226         // it any more. This is done by asking if any of the files in the
 227         // dependency file has changed. (remember that the checksum for
 228         // a given file is reported to have changed if it just was created)
 229         //     -> if changed or rerun == true:
 230         //             run latex once more and
 231         //             update the dependency structure
 232         //     -> if not changed:
 233         //             we does nothing at this point
 234         //
 235         if (rerun || head.sumchange()) {
 236                 rerun = false;
 237                 ++count;
 238                 lyxerr[Debug::DEPEND]
 239                         << "Dep. file has changed or rerun requested" << endl;
 240                 lyxerr[Debug::LATEX]
 241                         << "Run #" << count << endl;
 242                 WriteStatus(minib,
 243                             string(_("LaTeX run number ")) + tostr(count));
 244                 this->operator()();
 245                 scanres = scanLogFile(terr);
 246                 if (scanres & LaTeX::ERRORS) {
 247                         deleteFilesOnError();
 248                         return scanres; // return on error
 249                 }
 250
 251                 // update the depedencies
 252                 deplog(head); // reads the latex log
 253                 head.update();
 254         } else {
 255                 lyxerr[Debug::DEPEND] << "Dep. file has NOT changed" << endl;
 256         }
 257
 258         // 1.5
 259         // The inclusion of files generated by external programs like
 260         // makeindex or bibtex might have done changes to pagenumbereing,
 261         // etc. And because of this we must run the external programs
 262         // again to make sure everything is redone correctly.
 263         // Also there should be no need to run the external programs any
 264         // more after this.
 265
 266         // run makeindex if the <file>.idx has changed or was generated.
 267         if (head.haschanged(OnlyFilename(ChangeExtension(file, ".idx")))) {
 268                 // no checks for now
 269                 lyxerr[Debug::LATEX] << "Running MakeIndex." << endl;
 270                 WriteStatus(minib, _("Running MakeIndex."));
 271                 rerun = runMakeIndex(OnlyFilename(ChangeExtension(file, ".idx")));
 272         }
 273
 274         // 2
 275         // we will only run latex more if the log file asks for it.
 276         // or if the sumchange() is true.
 277         //     -> rerun asked for:
 278         //             run latex and
 279         //             remake the dependency file
 280         //             goto 2 or return if max runs are reached.
 281         //     -> rerun not asked for:
 282         //             just return (fall out of bottom of func)
 283         //
 284         while ((head.sumchange() || rerun || (scanres & LaTeX::RERUN))
 285                && count < MAX_RUN) {
 286                 // Yes rerun until message goes away, or until
 287                 // MAX_RUNS are reached.
 288                 rerun = false;
 289                 ++count;
 290                 lyxerr[Debug::LATEX] << "Run #" << count << endl;
 291                 WriteStatus(minib, string(_("LaTeX run number ")) + tostr(count));
 292                 this->operator()();
 293                 scanres = scanLogFile(terr);
 294                 if (scanres & LaTeX::ERRORS) {
 295                         deleteFilesOnError();
 296                         return scanres; // return on error
 297                 }
 298
 299                 // keep this updated
 300                 head.update();
 301         }
 302
 303         // Write the dependencies to file.
 304         head.write(depfile);
 305         lyxerr[Debug::LATEX] << "Done." << endl;
 306         return scanres;
 307 }
 308
 309
 310 int LaTeX::operator()()
 311 {
 312 #ifndef __EMX__
 313         string tmp = cmd + ' ' + QuoteName(file) + " > /dev/null";
 314 #else // cmd.exe (OS/2) causes SYS0003 error at "/dev/null"
 315         string tmp = cmd + ' ' + file + " > nul";
 316 #endif
 317         Systemcalls one;
 318         return one.startscript(Systemcalls::System, tmp);
 319 }
 320
 321
 322 bool LaTeX::runMakeIndex(string const & f)
 323 {
 324         lyxerr[Debug::LATEX] << "idx file has been made,"
 325                 " running makeindex on file "
 326                              <<  f << endl;
 327
 328         // It should be possible to set the switches for makeindex
 329         // sorting style and such. It would also be very convenient
 330         // to be able to make style files from within LyX. This has
 331         // to come for a later time. (0.13 perhaps?)
 332         string tmp = "makeindex -c -q ";
 333         tmp += f;
 334         Systemcalls one;
 335         one.startscript(Systemcalls::System, tmp);
 336         return true;
 337 }
 338
 339 // scanAux may return a wrong result if there are more than two bibliographies,
 340 // and after LaTeX-ing the file, the user changes the order of the bibliography
 341 // and run LaTeX again. However, in this case, bibtopic prints a warning message which
 342 // is caught by scanLogFile.
 343 bool LaTeX::scanAux(DepTable & dep)
 344 {
 345         // if any of the bib file has changed we don't have to
 346         // check the .aux file.
 347         if (dep.extchanged(".bib")
 348             || dep.extchanged(".bst")) return true;
 349
 350         string aux = OnlyFilename(ChangeExtension(file, ".aux"));
 351         return !scanAuxFiles(aux, dep, false).empty();
 352 }
 353
 354 vector<string> const
 355 LaTeX::scanAuxFiles(string const & file, DepTable & dep, bool insert)
 356 {
 357         vector<string> result;
 358         if (scanAuxFile(file, dep, insert)) {
 359                 result.push_back(file);
 360                 if (!insert)
 361                         return result;
 362         }
 363
 364         for (int i = 1; i < 1000; ++i) {
 365                 string file2 = ChangeExtension(file, "") + "." + tostr(i)
 366                         + ".aux";
 367                 FileInfo fi(file2);
 368                 if (!fi.exist())
 369                         return result;
 370                 if (scanAuxFile(file2, dep, insert)) {
 371                         result.push_back(file2);
 372                         if (!insert)
 373                                 return result;
 374                 }
 375         }
 376         return result;
 377 }
 378
 379
 380 // If insert = true, then scanAuxFile returns true iff the aux file contains
 381 // a bibtex database (i.e. a \bibdata command), or it inputs another auxfile which
 382 // contains a bibtex database.
 383 // Also the dep is updated for all bibtex databases and bibtex styles in the aux
 384 // file.
 385 // Ideally, scanAuxFile should return true iff one of the bibtex database/styles has
 386 // changes from previous run, or a new bibtex database/styles was added to the aux file.
 387 // However, it is probably not worth the effort.
 388 //
 389 // If insert = false, then scanAuxFile returns true iff the aux file contains a
 390 // bibtex database or a bibtex style that do not appear in dep.
 391 //
 392 bool LaTeX::scanAuxFile(string const & file, DepTable & dep, bool insert)
 393 {
 394         lyxerr[Debug::LATEX] << "Scanning aux file: " << file << endl;
 395
 396         ifstream ifs(file.c_str());
 397         string token;
 398         LRegex reg1("\\\\bibdata\\{([^}]+)\\}");
 399         LRegex reg2("\\\\bibstyle\\{([^}]+)\\}");
 400         LRegex reg3("\\\\@input\\{([^}]+)\\}");
 401         bool result = false;
 402         while (getline(ifs, token)) {
 403                 if (reg1.exact_match(token)) {
 404                         if (insert)
 405                                 result = true;
 406                         LRegex::SubMatches const & sub = reg1.exec(token);
 407                         string data = LSubstring(token, sub[1].first,
 408                                                  sub[1].second);
 409                         // data is now all the bib files separated by ','
 410                         // get them one by one and pass them to the helper
 411                         while (!data.empty()) {
 412                                 string l;
 413                                 data = split(data, l, ',');
 414                                 string full_l =
 415                                         findtexfile(ChangeExtension(l, "bib"),
 416                                                     "bib");
 417                                 lyxerr[Debug::LATEX] << "Bibtex database: `"
 418                                                      << full_l << "'" << endl;
 419                                 if (!full_l.empty()) {
 420                                         if (insert)
 421                                                 // add full_l to the dep file.
 422                                                 dep.insert(full_l, true);
 423                                         else
 424                                                 if (!dep.exist(full_l))
 425                                                         return true;
 426                                 }
 427                         }
 428                 } else if (reg2.exact_match(token)) {
 429                         LRegex::SubMatches const & sub = reg2.exec(token);
 430                         string style = LSubstring(token, sub[1].first,
 431                                                   sub[1].second);
 432                         // token is now the style file
 433                         // pass it to the helper
 434                         string full_l =
 435                                 findtexfile(ChangeExtension(style, "bst"),
 436                                             "bst");
 437                         lyxerr[Debug::LATEX] << "Bibtex style: `"
 438                                              << full_l << "'" << endl;
 439                         if (!full_l.empty()) {
 440                                 if (insert)
 441                                         // add full_l to the dep file.
 442                                         dep.insert(full_l, true);
 443                                 else
 444                                         if (!dep.exist(full_l))
 445                                                 return true;
 446                         }
 447                 } else if (reg3.exact_match(token)) {
 448                         LRegex::SubMatches const & sub = reg3.exec(token);
 449                         string file2 = LSubstring(token, sub[1].first,
 450                                                   sub[1].second);
 451                         result |=  scanAuxFile(file2, dep, insert);
 452                         if (result && !insert)
 453                                 return true;
 454                 }
 455         }
 456         return result;
 457 }
 458
 459
 460 bool LaTeX::runBibTeX(DepTable & dep)
 461 {
 462         // Since a run of Bibtex mandates more latex runs it is ok to
 463         // remove all ".bib" and ".bst" files, it is also required to
 464         // discover style and database changes.
 465         dep.remove_files_with_extension(".bib");
 466         dep.remove_files_with_extension(".bst");
 467         string aux = OnlyFilename(ChangeExtension(file, ".aux"));
 468         vector<string> const aux_files = scanAuxFiles(aux, dep, true);
 469         // Run bibtex on each of the aux files in
 470         for (vector<string>::const_iterator it = aux_files.begin();
 471              it != aux_files.end(); ++it) {
 472                 string tmp = "bibtex ";
 473                 tmp += OnlyFilename(ChangeExtension(*it, string()));
 474                 Systemcalls one;
 475                 one.startscript(Systemcalls::System, tmp);
 476         }
 477         // Return whether bibtex was run
 478         return !aux_files.empty();
 479 }
 480
 481
 482 int LaTeX::scanLogFile(TeXErrors & terr)
 483 {
 484         int last_line = -1;
 485         int line_count = 1;
 486         int retval = NO_ERRORS;
 487         string tmp = OnlyFilename(ChangeExtension(file, ".log"));
 488         lyxerr[Debug::LATEX] << "Log file: " << tmp << endl;
 489         ifstream ifs(tmp.c_str());
 490
 491         string token;
 492         while (getline(ifs, token)) {
 493                 lyxerr[Debug::LATEX] << "Log line: " << token << endl;
 494
 495                 if (token.empty())
 496                         continue;
 497
 498                 if (prefixIs(token, "LaTeX Warning:")) {
 499                         // Here shall we handle different
 500                         // types of warnings
 501                         retval |= LATEX_WARNING;
 502                         lyxerr[Debug::LATEX] << "LaTeX Warning." << endl;
 503                         if (contains(token, "Rerun to get cross-references")) {
 504                                 retval |= RERUN;
 505                                 lyxerr[Debug::LATEX]
 506                                         << "We should rerun." << endl;
 507                         } else if (contains(token, "Citation")
 508                                    && contains(token, "on page")
 509                                    && contains(token, "undefined")) {
 510                                 retval |= UNDEF_CIT;
 511                         }
 512                 } else if (prefixIs(token, "Package")) {
 513                         // Package warnings
 514                         retval |= PACKAGE_WARNING;
 515                         if (contains(token, "natbib Warning:")) {
 516                                 // Natbib warnings
 517                                 if (contains(token, "Citation")
 518                                     && contains(token, "on page")
 519                                     && contains(token, "undefined")) {
 520                                         retval |= UNDEF_CIT;
 521                                 }
 522                         } else if (contains(token, "run BibTeX")) {
 523                                 retval |= UNDEF_CIT;
 524                         } else if (contains(token, "Rerun LaTeX.")) {
 525                                 // at least longtable.sty might use this.
 526                                 retval |= RERUN;
 527                         }
 528                 } else if (prefixIs(token, "! ")) {
 529                         // Ok, we have something that looks like a TeX Error
 530                         // but what do we really have.
 531
 532                         // Just get the error description:
 533                         string desc(token, 2);
 534                         if (contains(token, "LaTeX Error:"))
 535                                 retval |= LATEX_ERROR;
 536                         // get the next line
 537                         string tmp;
 538                         int count = 0;
 539                         do {
 540                                 if (!getline(ifs, tmp))
 541                                         break;
 542                                 if (++count > 10)
 543                                         break;
 544                         } while (!prefixIs(tmp, "l."));
 545                         if (prefixIs(tmp, "l.")) {
 546                                 // we have a latex error
 547                                 retval |=  TEX_ERROR;
 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 |= RERUN;
 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 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                         continue;
 668                 }
 669
 670                 // (2) foundfile is in the tmpdir
 671                 //     insert it into head
 672                 if (FileInfo(OnlyFilename(foundfile)).exist()) {
 673                         if (unwanted.exact_match(foundfile)) {
 674                                 lyxerr[Debug::DEPEND]
 675                                         << "We don't want "
 676                                         << OnlyFilename(foundfile)
 677                                         << " in the dep file"
 678                                         << endl;
 679                         } else if (suffixIs(foundfile, ".tex")) {
 680                                 // This is a tex file generated by LyX
 681                                 // and latex is not likely to change this
 682                                 // during its runs.
 683                                 lyxerr[Debug::DEPEND]
 684                                         << "Tmpdir TeX file: "
 685                                         << OnlyFilename(foundfile)
 686                                         << endl;
 687                                 head.insert(foundfile, true);
 688                         } else {
 689                                 lyxerr[Debug::DEPEND]
 690                                         << "In tmpdir file:"
 691                                         << OnlyFilename(foundfile)
 692                                         << endl;
 693                                 head.insert(OnlyFilename(foundfile));
 694                         }
 695                         continue;
 696                 }
 697                 lyxerr[Debug::DEPEND]
 698                         << "Not a file or we are unable to find it."
 699                         << endl;
 700         }
 701 }