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/syscontr.h"
  29 #include "support/path.h"
  30 #include "support/LRegex.h"
  31 #include "support/LSubstring.h"
  32 #include "support/lstrings.h"
  33 #include "bufferlist.h"
  34 #include "gettext.h"
  35 #include "lyx_gui_misc.h"
  36 #include "lyxfunc.h"
  37
  38 using std::ifstream;
  39 using std::getline;
  40 using std::endl;
  41 using std::vector;
  42 using std::set;
  43
  44 // TODO: in no particular order
  45 // - get rid of the extern BufferList and the call to
  46 //   BufferList::updateIncludedTeXfiles, this should either
  47 //   be done before calling LaTeX::funcs or in a completely
  48 //   different way.
  49 // - the bibtex command options should be supported.
  50 // - the makeindex style files should be taken care of with
  51 //   the dependency mechanism.
  52 // - makeindex commandline options should be supported
  53 // - somewhere support viewing of bibtex and makeindex log files.
  54 // - we should perhaps also scan the bibtex log file
  55 // - we should perhaps also scan the bibtex log file
  56
  57 extern BufferList bufferlist;
  58
  59 /*
  60  * CLASS TEXERRORS
  61  */
  62
  63 void TeXErrors::insertError(int line, string const & error_desc,
  64                             string const & error_text)
  65 {
  66         Error newerr(line, error_desc, error_text);
  67         errors.push_back(newerr);
  68 }
  69
  70 /*
  71  * CLASS LaTeX
  72  */
  73
  74 LaTeX::LaTeX(string const & latex, string const & f, string const & p)
  75                 : cmd(latex), file(f), path(p)
  76 {
  77         num_errors = 0;
  78         depfile = file + ".dep";
  79         if (prefixIs(cmd, "pdf")) // Do we use pdflatex ?
  80                 depfile += "-pdf";
  81 }
  82
  83
  84 void LaTeX::deleteFilesOnError() const
  85 {
  86         // currently just a dummy function.
  87
  88         // What files do we have to delete?
  89
  90         // This will at least make latex do all the runs
  91         lyx::unlink(depfile);
  92
  93         // but the reason for the error might be in a generated file...
  94
  95         string ofname = OnlyFilename(file);
  96
  97         // bibtex file
  98         string bbl = ChangeExtension(ofname, ".bbl");
  99         lyx::unlink(bbl);
 100
 101         // makeindex file
 102         string ind = ChangeExtension(ofname, ".ind");
 103         lyx::unlink(ind);
 104
 105         // Also remove the aux file
 106         string aux = ChangeExtension(ofname, ".aux");
 107         lyx::unlink(aux);
 108 }
 109
 110
 111 int LaTeX::run(TeXErrors & terr, LyXFunc * lfun)
 112         // We know that this function will only be run if the lyx buffer
 113         // has been changed. We also know that a newly written .tex file
 114         // is always different from the previous one because of the date
 115         // in it. However it seems safe to run latex (at least) on time each
 116         // time the .tex file changes.
 117 {
 118         int scanres = NO_ERRORS;
 119         unsigned int count = 0; // number of times run
 120         num_errors = 0; // just to make sure.
 121         const unsigned int MAX_RUN = 6;
 122         DepTable head; // empty head
 123         bool rerun = false; // rerun requested
 124
 125         // The class LaTeX does not know the temp path.
 126         bufferlist.updateIncludedTeXfiles(lyx::getcwd()); //GetCWD());
 127
 128         // Never write the depfile if an error was encountered.
 129
 130         // 0
 131         // first check if the file dependencies exist:
 132         //     ->If it does exist
 133         //             check if any of the files mentioned in it have
 134         //             changed (done using a checksum).
 135         //                 -> if changed:
 136         //                        run latex once and
 137         //                        remake the dependency file
 138         //                 -> if not changed:
 139         //                        just return there is nothing to do for us.
 140         //     ->if it doesn't exist
 141         //             make it and
 142         //             run latex once (we need to run latex once anyway) and
 143         //             remake the dependency file.
 144         //
 145
 146         FileInfo fi(depfile);
 147         bool had_depfile = fi.exist();
 148         bool run_bibtex = false;
 149         string aux_file = OnlyFilename(ChangeExtension(file, "aux"));
 150
 151         if (had_depfile) {
 152                 lyxerr[Debug::DEPEND] << "Dependency file exists" << endl;
 153                 // Read the dep file:
 154                 head.read(depfile);
 155                 // Update the checksums
 156                 head.update();
 157                 if (!head.sumchange()) {
 158                         lyxerr[Debug::DEPEND] << "return no_change" << endl;
 159                         return NO_CHANGE;
 160                 }
 161                 lyxerr[Debug::DEPEND]
 162                         << "Dependency file has changed" << endl;
 163
 164                 if (head.extchanged(".bib") || head.extchanged(".bst"))
 165                         run_bibtex = true;
 166         } else
 167                 lyxerr[Debug::DEPEND]
 168                         << "Dependency file does not exist" << endl;
 169
 170         /// We scan the aux file even when had_depfile = false,
 171         /// because we can run pdflatex on the file after running latex on it,
 172         /// in which case we will not need to run bibtex again.
 173         vector<Aux_Info> bibtex_info_old;
 174         if (!run_bibtex)
 175                 bibtex_info_old = scanAuxFiles(aux_file);
 176
 177         ++count;
 178         lyxerr[Debug::LATEX] << "Run #" << count << endl;
 179         if (lfun) {
 180                 ostringstream str;
 181                 str << _("LaTeX run number") << ' ' << count;
 182                 lfun->dispatch(LFUN_MESSAGE, str.str().c_str());
 183         }
 184
 185         this->operator()();
 186         scanres = scanLogFile(terr);
 187         if (scanres & ERROR_RERUN) {
 188                 lyxerr[Debug::LATEX] << "Rerunning LaTeX" << endl;
 189                 this->operator()();
 190                 scanres = scanLogFile(terr);
 191         }
 192
 193         if (scanres & ERRORS) {
 194                 deleteFilesOnError();
 195                 return scanres; // return on error
 196         }
 197
 198         vector<Aux_Info> const bibtex_info = scanAuxFiles(aux_file);
 199         if (!run_bibtex && bibtex_info_old != bibtex_info)
 200                 run_bibtex = true;
 201
 202         // update the dependencies.
 203         deplog(head); // reads the latex log
 204         head.update();
 205
 206         // 0.5
 207         // At this point we must run external programs if needed.
 208         // makeindex will be run if a .idx file changed or was generated.
 209         // And if there were undefined citations or changes in references
 210         // the .aux file is checked for signs of bibtex. Bibtex is then run
 211         // if needed.
 212
 213         // run makeindex
 214         if (head.haschanged(OnlyFilename(ChangeExtension(file, ".idx")))) {
 215                 // no checks for now
 216                 lyxerr[Debug::LATEX] << "Running MakeIndex." << endl;
 217                 if (lfun) {
 218                         lfun->dispatch(LFUN_MESSAGE, _("Running MakeIndex."));
 219                 }
 220
 221                 rerun = runMakeIndex(OnlyFilename(ChangeExtension(file, ".idx")));
 222         }
 223
 224         // run bibtex
 225         // if (scanres & UNDEF_CIT || scanres & RERUN || run_bibtex)
 226         if (scanres & UNDEF_CIT || run_bibtex) {
 227                 // Here we must scan the .aux file and look for
 228                 // "\bibdata" and/or "\bibstyle". If one of those
 229                 // tags is found -> run bibtex and set rerun = true;
 230                 // no checks for now
 231                 lyxerr[Debug::LATEX] << "Running BibTeX." << endl;
 232                 if (lfun) {
 233                         lfun->dispatch(LFUN_MESSAGE, _("Running BibTeX."));
 234                 }
 235
 236                 updateBibtexDependencies(head, bibtex_info);
 237                 rerun |= runBibTeX(bibtex_info);
 238         } else if (!had_depfile) {
 239                 /// If we run pdflatex on the file after running latex on it,
 240                 /// then we do not need to run bibtex, but we do need to
 241                 /// insert the .bib and .bst files into the .dep-pdf file.
 242                 updateBibtexDependencies(head, bibtex_info);
 243         }
 244
 245         // 1
 246         // we know on this point that latex has been run once (or we just
 247         // returned) and the question now is to decide if we need to run
 248         // it any more. This is done by asking if any of the files in the
 249         // dependency file has changed. (remember that the checksum for
 250         // a given file is reported to have changed if it just was created)
 251         //     -> if changed or rerun == true:
 252         //             run latex once more and
 253         //             update the dependency structure
 254         //     -> if not changed:
 255         //             we does nothing at this point
 256         //
 257         if (rerun || head.sumchange()) {
 258                 rerun = false;
 259                 ++count;
 260                 lyxerr[Debug::DEPEND]
 261                         << "Dep. file has changed or rerun requested" << endl;
 262                 lyxerr[Debug::LATEX]
 263                         << "Run #" << count << endl;
 264                 if (lfun) {
 265                         ostringstream str;
 266                         str << _("LaTeX run number") << ' ' << count;
 267                         lfun->dispatch(LFUN_MESSAGE, str.str().c_str());
 268                 }
 269
 270                 this->operator()();
 271                 scanres = scanLogFile(terr);
 272                 if (scanres & ERRORS) {
 273                         deleteFilesOnError();
 274                         return scanres; // return on error
 275                 }
 276
 277                 // update the depedencies
 278                 deplog(head); // reads the latex log
 279                 head.update();
 280         } else {
 281                 lyxerr[Debug::DEPEND] << "Dep. file has NOT changed" << endl;
 282         }
 283
 284         // 1.5
 285         // The inclusion of files generated by external programs like
 286         // makeindex or bibtex might have done changes to pagenumbereing,
 287         // etc. And because of this we must run the external programs
 288         // again to make sure everything is redone correctly.
 289         // Also there should be no need to run the external programs any
 290         // more after this.
 291
 292         // run makeindex if the <file>.idx has changed or was generated.
 293         if (head.haschanged(OnlyFilename(ChangeExtension(file, ".idx")))) {
 294                 // no checks for now
 295                 lyxerr[Debug::LATEX] << "Running MakeIndex." << endl;
 296                 if (lfun) {
 297                         lfun->dispatch(LFUN_MESSAGE, _("Running MakeIndex."));
 298                 }
 299
 300                 rerun = runMakeIndex(OnlyFilename(ChangeExtension(file, ".idx")));
 301         }
 302
 303         // 2
 304         // we will only run latex more if the log file asks for it.
 305         // or if the sumchange() is true.
 306         //     -> rerun asked for:
 307         //             run latex and
 308         //             remake the dependency file
 309         //             goto 2 or return if max runs are reached.
 310         //     -> rerun not asked for:
 311         //             just return (fall out of bottom of func)
 312         //
 313         while ((head.sumchange() || rerun || (scanres & RERUN))
 314                && count < MAX_RUN) {
 315                 // Yes rerun until message goes away, or until
 316                 // MAX_RUNS are reached.
 317                 rerun = false;
 318                 ++count;
 319                 lyxerr[Debug::LATEX] << "Run #" << count << endl;
 320                 if (lfun) {
 321                         ostringstream str;
 322                         str << _("LaTeX run number") << ' ' << count;
 323                         lfun->dispatch(LFUN_MESSAGE, str.str().c_str());
 324                 }
 325
 326                 this->operator()();
 327                 scanres = scanLogFile(terr);
 328                 if (scanres & ERRORS) {
 329                         deleteFilesOnError();
 330                         return scanres; // return on error
 331                 }
 332
 333                 // keep this updated
 334                 head.update();
 335         }
 336
 337         // Write the dependencies to file.
 338         head.write(depfile);
 339         lyxerr[Debug::LATEX] << "Done." << endl;
 340         return scanres;
 341 }
 342
 343
 344 int LaTeX::operator()()
 345 {
 346 #ifndef __EMX__
 347         string tmp = cmd + ' ' + QuoteName(file) + " > /dev/null";
 348 #else // cmd.exe (OS/2) causes SYS0003 error at "/dev/null"
 349         string tmp = cmd + ' ' + file + " > nul";
 350 #endif
 351         Systemcalls one;
 352         return one.startscript(Systemcalls::System, tmp);
 353 }
 354
 355
 356 bool LaTeX::runMakeIndex(string const & f)
 357 {
 358         lyxerr[Debug::LATEX] << "idx file has been made,"
 359                 " running makeindex on file "
 360                              <<  f << endl;
 361
 362         // It should be possible to set the switches for makeindex
 363         // sorting style and such. It would also be very convenient
 364         // to be able to make style files from within LyX. This has
 365         // to come for a later time. (0.13 perhaps?)
 366         string tmp = "makeindex -c -q ";
 367         tmp += f;
 368         Systemcalls one;
 369         one.startscript(Systemcalls::System, tmp);
 370         return true;
 371 }
 372
 373
 374 vector<Aux_Info> const
 375 LaTeX::scanAuxFiles(string const & file)
 376 {
 377         vector<Aux_Info> result;
 378
 379         result.push_back(scanAuxFile(file));
 380
 381         for (int i = 1; i < 1000; ++i) {
 382                 string file2 = ChangeExtension(file, "") + "." + tostr(i)
 383                         + ".aux";
 384                 FileInfo fi(file2);
 385                 if (!fi.exist())
 386                         break;
 387                 result.push_back(scanAuxFile(file2));
 388         }
 389         return result;
 390 }
 391
 392
 393 Aux_Info const LaTeX::scanAuxFile(string const & file)
 394 {
 395         Aux_Info result;
 396         result.aux_file = file;
 397         scanAuxFile(file, result);
 398         return result;
 399 }
 400
 401
 402 void LaTeX::scanAuxFile(string const & file, Aux_Info & aux_info)
 403 {
 404         lyxerr[Debug::LATEX] << "Scanning aux file: " << file << endl;
 405
 406         ifstream ifs(file.c_str());
 407         string token;
 408         LRegex reg1("\\\\citation\\{([^}]+)\\}");
 409         LRegex reg2("\\\\bibdata\\{([^}]+)\\}");
 410         LRegex reg3("\\\\bibstyle\\{([^}]+)\\}");
 411         LRegex reg4("\\\\@input\\{([^}]+)\\}");
 412
 413         while (getline(ifs, token)) {
 414                 token = strip(token, '\r');
 415                 if (reg1.exact_match(token)) {
 416                         LRegex::SubMatches const & sub = reg1.exec(token);
 417                         string data = LSubstring(token, sub[1].first,
 418                                                  sub[1].second);
 419                         while (!data.empty()) {
 420                                 string citation;
 421                                 data = split(data, citation, ',');
 422                                 lyxerr[Debug::LATEX] << "Citation: "
 423                                                      << citation << endl;
 424                                 aux_info.citations.insert(citation);
 425                         }
 426                 } else if (reg2.exact_match(token)) {
 427                         LRegex::SubMatches const & sub = reg2.exec(token);
 428                         string data = LSubstring(token, sub[1].first,
 429                                                  sub[1].second);
 430                         // data is now all the bib files separated by ','
 431                         // get them one by one and pass them to the helper
 432                         while (!data.empty()) {
 433                                 string database;
 434                                 data = split(data, database, ',');
 435                                 database = ChangeExtension(database, "bib");
 436                                 lyxerr[Debug::LATEX] << "Bibtex database: `"
 437                                                      << database << "'" << endl;
 438                                 aux_info.databases.insert(database);
 439                         }
 440                 } else if (reg3.exact_match(token)) {
 441                         LRegex::SubMatches const & sub = reg3.exec(token);
 442                         string style = LSubstring(token, sub[1].first,
 443                                                   sub[1].second);
 444                         // token is now the style file
 445                         // pass it to the helper
 446                         style = ChangeExtension(style, "bst");
 447                         lyxerr[Debug::LATEX] << "Bibtex style: `"
 448                                              << style << "'" << endl;
 449                         aux_info.styles.insert(style);
 450                 } else if (reg4.exact_match(token)) {
 451                         LRegex::SubMatches const & sub = reg4.exec(token);
 452                         string file2 = LSubstring(token, sub[1].first,
 453                                                   sub[1].second);
 454                         scanAuxFile(file2, aux_info);
 455                 }
 456         }
 457 }
 458
 459
 460 void LaTeX::updateBibtexDependencies(DepTable & dep,
 461                                      vector<Aux_Info> const & bibtex_info)
 462 {
 463         // Since a run of Bibtex mandates more latex runs it is ok to
 464         // remove all ".bib" and ".bst" files.
 465         dep.remove_files_with_extension(".bib");
 466         dep.remove_files_with_extension(".bst");
 467         //string aux = OnlyFilename(ChangeExtension(file, ".aux"));
 468
 469         for (vector<Aux_Info>::const_iterator it = bibtex_info.begin();
 470              it != bibtex_info.end(); ++it) {
 471                 for (set<string>::const_iterator it2 = it->databases.begin();
 472                      it2 != it->databases.end(); ++it2) {
 473                         string file = findtexfile(*it2, "bib");
 474                         if (!file.empty())
 475                                 dep.insert(file, true);
 476                 }
 477
 478                 for (set<string>::const_iterator it2 = it->styles.begin();
 479                      it2 != it->styles.end(); ++it2) {
 480                         string file = findtexfile(*it2, "bst");
 481                         if (!file.empty())
 482                                 dep.insert(file, true);
 483                 }
 484         }
 485 }
 486
 487
 488 bool LaTeX::runBibTeX(vector<Aux_Info> const & bibtex_info)
 489 {
 490         bool result = false;
 491         for (vector<Aux_Info>::const_iterator it = bibtex_info.begin();
 492              it != bibtex_info.end(); ++it) {
 493                 if (it->databases.empty())
 494                         continue;
 495                 result = true;
 496
 497                 string tmp = "bibtex ";
 498                 tmp += OnlyFilename(ChangeExtension(it->aux_file, string()));
 499                 Systemcalls one;
 500                 one.startscript(Systemcalls::System, tmp);
 501         }
 502         // Return whether bibtex was run
 503         return result;
 504 }
 505
 506
 507 int LaTeX::scanLogFile(TeXErrors & terr)
 508 {
 509         int last_line = -1;
 510         int line_count = 1;
 511         int retval = NO_ERRORS;
 512         string tmp = OnlyFilename(ChangeExtension(file, ".log"));
 513         lyxerr[Debug::LATEX] << "Log file: " << tmp << endl;
 514         ifstream ifs(tmp.c_str());
 515
 516         string token;
 517         while (getline(ifs, token)) {
 518                 lyxerr[Debug::LATEX] << "Log line: " << token << endl;
 519
 520                 if (token.empty())
 521                         continue;
 522
 523                 if (prefixIs(token, "LaTeX Warning:")) {
 524                         // Here shall we handle different
 525                         // types of warnings
 526                         retval |= LATEX_WARNING;
 527                         lyxerr[Debug::LATEX] << "LaTeX Warning." << endl;
 528                         if (contains(token, "Rerun to get cross-references")) {
 529                                 retval |= RERUN;
 530                                 lyxerr[Debug::LATEX]
 531                                         << "We should rerun." << endl;
 532                         } else if (contains(token, "Citation")
 533                                    && contains(token, "on page")
 534                                    && contains(token, "undefined")) {
 535                                 retval |= UNDEF_CIT;
 536                         }
 537                 } else if (prefixIs(token, "Package")) {
 538                         // Package warnings
 539                         retval |= PACKAGE_WARNING;
 540                         if (contains(token, "natbib Warning:")) {
 541                                 // Natbib warnings
 542                                 if (contains(token, "Citation")
 543                                     && contains(token, "on page")
 544                                     && contains(token, "undefined")) {
 545                                         retval |= UNDEF_CIT;
 546                                 }
 547                         } else if (contains(token, "run BibTeX")) {
 548                                 retval |= UNDEF_CIT;
 549                         } else if (contains(token, "Rerun LaTeX") ||
 550                                    contains(token, "Rerun to get")) {
 551                                 // at least longtable.sty and bibtopic.sty
 552                                 // might use this.
 553                                 lyxerr[Debug::LATEX]
 554                                         << "We should rerun." << endl;
 555                                 retval |= RERUN;
 556                         }
 557                 } else if (prefixIs(token, "(")) {
 558                         if (contains(token, "Rerun LaTeX") ||
 559                             contains(token, "Rerun to get")) {
 560                                 // Used by natbib
 561                                 lyxerr[Debug::LATEX]
 562                                         << "We should rerun." << endl;
 563                                 retval |= RERUN;
 564                         }
 565                 } else if (prefixIs(token, "! ")) {
 566                         // Ok, we have something that looks like a TeX Error
 567                         // but what do we really have.
 568
 569                         // Just get the error description:
 570                         string desc(token, 2);
 571                         if (contains(token, "LaTeX Error:"))
 572                                 retval |= LATEX_ERROR;
 573                         // get the next line
 574                         string tmp;
 575                         int count = 0;
 576                         do {
 577                                 if (!getline(ifs, tmp))
 578                                         break;
 579                                 if (++count > 10)
 580                                         break;
 581                         } while (!prefixIs(tmp, "l."));
 582                         if (prefixIs(tmp, "l.")) {
 583                                 // we have a latex error
 584                                 retval |=  TEX_ERROR;
 585                                 if (contains(desc, "Package babel Error: You haven't defined the language"))
 586                                         retval |= ERROR_RERUN;
 587                                 // get the line number:
 588                                 int line = 0;
 589                                 sscanf(tmp.c_str(), "l.%d", &line);
 590                                 // get the rest of the message:
 591                                 string errstr(tmp, tmp.find(' '));
 592                                 errstr += '\n';
 593                                 getline(ifs, tmp);
 594                                 while (!contains(errstr, "l.")
 595                                        && !tmp.empty()
 596                                        && !prefixIs(tmp, "! ")
 597                                        && !contains(tmp, "(job aborted")) {
 598                                         errstr += tmp;
 599                                         errstr += "\n";
 600                                         getline(ifs, tmp);
 601                                 }
 602                                 lyxerr[Debug::LATEX]
 603                                         << "line: " << line << '\n'
 604                                         << "Desc: " << desc << '\n'
 605                                         << "Text: " << errstr << endl;
 606                                 if (line == last_line)
 607                                         ++line_count;
 608                                 else {
 609                                         line_count = 1;
 610                                         last_line = line;
 611                                 }
 612                                 if (line_count <= 5) {
 613                                         terr.insertError(line, desc, errstr);
 614                                         ++num_errors;
 615                                 }
 616                         }
 617                 } else {
 618                         // information messages, TeX warnings and other
 619                         // warnings we have not caught earlier.
 620                         if (prefixIs(token, "Overfull ")) {
 621                                 retval |= TEX_WARNING;
 622                         } else if (prefixIs(token, "Underfull ")) {
 623                                 retval |= TEX_WARNING;
 624                         } else if (contains(token, "Rerun to get citations")) {
 625                                 // Natbib seems to use this.
 626                                 retval |= UNDEF_CIT;
 627                         } else if (contains(token, "No pages of output")) {
 628                                 // A dvi file was not created
 629                                 retval |= NO_OUTPUT;
 630                         } else if (contains(token, "That makes 100 errors")) {
 631                                 // More than 100 errors were reprted
 632                                 retval |= TOO_MANY_ERRORS;
 633                         }
 634                 }
 635         }
 636         lyxerr[Debug::LATEX] << "Log line: " << token << endl;
 637         return retval;
 638 }
 639
 640
 641 void LaTeX::deplog(DepTable & head)
 642 {
 643         // This function reads the LaTeX log file end extracts all the external
 644         // files used by the LaTeX run. The files are then entered into the
 645         // dependency file.
 646
 647         string const logfile = OnlyFilename(ChangeExtension(file, ".log"));
 648
 649         LRegex reg1("\\)* *\\(([^ )]+).*");
 650         LRegex reg2("File: ([^ ]+).*");
 651         LRegex reg3("No file ([^ ]+)\\..*");
 652         LRegex reg4("\\\\openout[0-9]+.*=.*`([^ ]+)'\\..*");
 653         // If an index should be created, MikTex does not write a line like
 654         //    \openout# = 'sample,idx'.
 655         // but intstead only a line like this into the log:
 656         //   Writing index file sample.idx
 657         LRegex reg5("Writing index file ([^ ]+).*");
 658         LRegex unwanted("^.*\\.(aux|log|dvi|bbl|ind|glo)$");
 659
 660         ifstream ifs(logfile.c_str());
 661         while (ifs) {
 662                 // Ok, the scanning of files here is not sufficient.
 663                 // Sometimes files are named by "File: xxx" only
 664                 // So I think we should use some regexps to find files instead.
 665                 // "(\([^ ]+\)"   should match the "(file " variant
 666                 // "File: \([^ ]+\)" should match the "File: file" variant
 667                 string foundfile;
 668                 string token;
 669                 getline(ifs, token);
 670                 token = strip(token, '\r');
 671                 if (token.empty()) continue;
 672
 673                 if (reg1.exact_match(token)) {
 674                         LRegex::SubMatches const & sub = reg1.exec(token);
 675                         foundfile = LSubstring(token, sub[1].first,
 676                                                sub[1].second);
 677                 } else if (reg2.exact_match(token)) {
 678                         LRegex::SubMatches const & sub = reg2.exec(token);
 679                         foundfile = LSubstring(token, sub[1].first,
 680                                                sub[1].second);
 681                 } else if (reg3.exact_match(token)) {
 682                         LRegex::SubMatches const & sub = reg3.exec(token);
 683                         foundfile = LSubstring(token, sub[1].first,
 684                                                sub[1].second);
 685                 } else if (reg4.exact_match(token)) {
 686                         LRegex::SubMatches const & sub = reg4.exec(token);
 687                         foundfile = LSubstring(token, sub[1].first,
 688                                                sub[1].second);
 689                 } else if (reg5.exact_match(token)) {
 690                         LRegex::SubMatches const & sub = reg5.exec(token);
 691                         foundfile = LSubstring(token, sub[1].first,
 692                                                sub[1].second);
 693                 } else {
 694                         continue;
 695                 }
 696
 697                 // convert from native os path to unix path
 698                 foundfile = os::internal_path(foundfile);
 699
 700                 lyxerr[Debug::DEPEND] << "Found file: "
 701                                       << foundfile << endl;
 702
 703                 // Ok now we found a file.
 704                 // Now we should make sure that this is a file that we can
 705                 // access through the normal paths.
 706                 // We will not try any fancy search methods to
 707                 // find the file.
 708
 709                 // (1) foundfile is an
 710                 //     absolute path and should
 711                 //     be inserted.
 712                 if (AbsolutePath(foundfile)) {
 713                         lyxerr[Debug::DEPEND] << "AbsolutePath file: "
 714                                               << foundfile << endl;
 715                         // On initial insert we want to do the update at once
 716                         // since this file can not be a file generated by
 717                         // the latex run.
 718                         if (FileInfo(foundfile).exist())
 719                                 head.insert(foundfile, true);
 720                 }
 721
 722                 // (2) foundfile is in the tmpdir
 723                 //     insert it into head
 724                 else if (FileInfo(OnlyFilename(foundfile)).exist()) {
 725                         if (unwanted.exact_match(foundfile)) {
 726                                 lyxerr[Debug::DEPEND]
 727                                         << "We don't want "
 728                                         << OnlyFilename(foundfile)
 729                                         << " in the dep file"
 730                                         << endl;
 731                         } else if (suffixIs(foundfile, ".tex")) {
 732                                 // This is a tex file generated by LyX
 733                                 // and latex is not likely to change this
 734                                 // during its runs.
 735                                 lyxerr[Debug::DEPEND]
 736                                         << "Tmpdir TeX file: "
 737                                         << OnlyFilename(foundfile)
 738                                         << endl;
 739                                 head.insert(foundfile, true);
 740                         } else {
 741                                 lyxerr[Debug::DEPEND]
 742                                         << "In tmpdir file:"
 743                                         << OnlyFilename(foundfile)
 744                                         << endl;
 745                                 head.insert(OnlyFilename(foundfile));
 746                         }
 747                 } else
 748                         lyxerr[Debug::DEPEND]
 749                                 << "Not a file or we are unable to find it."
 750                                 << endl;
 751         }
 752
 753         // Make sure that the main .tex file is in the dependancy file.
 754         head.insert(OnlyFilename(file), true);
 755 }