src/LaTeX.C

   1 /* This file is part of
   2  * ======================================================
   3  *
   4  *           LyX, The Document Processor
   5  *           Copyright 1995 Matthias Ettrich
   6  *           Copyright 1995-2001 The LyX Team.
   7  *
   8  *           This file is Copyright 1996-2001
   9  *           Lars Gullik Bjønnes
  10  *
  11  * ======================================================
  12  */
  13
  14 #include <config.h>
  15
  16 #ifdef __GNUG__
  17 #pragma implementation
  18 #endif
  19
  20 #include "LaTeX.h"
  21 #include "bufferlist.h"
  22 #include "gettext.h"
  23 #include "lyxfunc.h"
  24 #include "debug.h"
  25 #include "funcrequest.h"
  26 #include "support/filetools.h"
  27 #include "support/FileInfo.h"
  28 #include "support/lstrings.h"
  29 #include "support/lyxlib.h"
  30 #include "support/systemcall.h"
  31 #include "support/os.h"
  32 #include "support/path.h"
  33
  34 #include <boost/regex.hpp>
  35 #include "BoostFormat.h"
  36
  37 #include <fstream>
  38 #include <cstdio>  // sscanf
  39
  40 #ifndef CXX_GLOBAL_CSTD
  41 using std::sscanf;
  42 #endif
  43
  44 using std::ifstream;
  45 using std::getline;
  46 using std::endl;
  47 using std::vector;
  48 using std::set;
  49 using boost::regex;
  50 using boost::regex_match;
  51
  52 #ifndef USE_INCLUDED_STRING
  53 using boost::smatch;
  54 #else
  55 using boost::cmatch;
  56 #endif
  57
  58 // TODO: in no particular order
  59 // - get rid of the extern BufferList and the call to
  60 //   BufferList::updateIncludedTeXfiles, this should either
  61 //   be done before calling LaTeX::funcs or in a completely
  62 //   different way.
  63 // - the bibtex command options should be supported.
  64 // - the makeindex style files should be taken care of with
  65 //   the dependency mechanism.
  66 // - makeindex commandline options should be supported
  67 // - somewhere support viewing of bibtex and makeindex log files.
  68 // - we should perhaps also scan the bibtex log file
  69 // - we should perhaps also scan the bibtex log file
  70
  71 extern BufferList bufferlist;
  72
  73 /*
  74  * CLASS TEXERRORS
  75  */
  76
  77 void TeXErrors::insertError(int line, string const & error_desc,
  78                             string const & error_text)
  79 {
  80         Error newerr(line, error_desc, error_text);
  81         errors.push_back(newerr);
  82 }
  83
  84 /*
  85  * CLASS LaTeX
  86  */
  87
  88 LaTeX::LaTeX(string const & latex, string const & f, string const & p)
  89                 : cmd(latex), file(f), path(p)
  90 {
  91         num_errors = 0;
  92         depfile = file + ".dep";
  93         if (prefixIs(cmd, "pdf")) { // Do we use pdflatex ?
  94                 depfile += "-pdf";
  95                 output_file = ChangeExtension(file,".pdf");
  96         } else {
  97                 output_file = ChangeExtension(file,".dvi");
  98         }
  99 }
 100
 101
 102 void LaTeX::deleteFilesOnError() const
 103 {
 104         // currently just a dummy function.
 105
 106         // What files do we have to delete?
 107
 108         // This will at least make latex do all the runs
 109         lyx::unlink(depfile);
 110
 111         // but the reason for the error might be in a generated file...
 112
 113         string const ofname = OnlyFilename(file);
 114
 115         // bibtex file
 116         string const bbl = ChangeExtension(ofname, ".bbl");
 117         lyx::unlink(bbl);
 118
 119         // makeindex file
 120         string const ind = ChangeExtension(ofname, ".ind");
 121         lyx::unlink(ind);
 122
 123         // Also remove the aux file
 124         string const aux = ChangeExtension(ofname, ".aux");
 125         lyx::unlink(aux);
 126 }
 127
 128
 129 int LaTeX::run(TeXErrors & terr, LyXFunc * lfun)
 130         // We know that this function will only be run if the lyx buffer
 131         // has been changed. We also know that a newly written .tex file
 132         // is always different from the previous one because of the date
 133         // in it. However it seems safe to run latex (at least) on time each
 134         // time the .tex file changes.
 135 {
 136         int scanres = NO_ERRORS;
 137         unsigned int count = 0; // number of times run
 138         num_errors = 0; // just to make sure.
 139         unsigned int const MAX_RUN = 6;
 140         DepTable head; // empty head
 141         bool rerun = false; // rerun requested
 142
 143         // The class LaTeX does not know the temp path.
 144         bufferlist.updateIncludedTeXfiles(lyx::getcwd()); //GetCWD());
 145
 146         // Never write the depfile if an error was encountered.
 147
 148         // 0
 149         // first check if the file dependencies exist:
 150         //     ->If it does exist
 151         //             check if any of the files mentioned in it have
 152         //             changed (done using a checksum).
 153         //                 -> if changed:
 154         //                        run latex once and
 155         //                        remake the dependency file
 156         //                 -> if not changed:
 157         //                        just return there is nothing to do for us.
 158         //     ->if it doesn't exist
 159         //             make it and
 160         //             run latex once (we need to run latex once anyway) and
 161         //             remake the dependency file.
 162         //
 163
 164         FileInfo fi(depfile);
 165         bool had_depfile = fi.exist();
 166         bool run_bibtex = false;
 167         string aux_file = OnlyFilename(ChangeExtension(file, "aux"));
 168
 169         if (had_depfile) {
 170                 lyxerr[Debug::DEPEND] << "Dependency file exists" << endl;
 171                 // Read the dep file:
 172                 head.read(depfile);
 173                 // Update the checksums
 174                 head.update();
 175                 // Can't just check if anything has changed because it might have aborted
 176                 // on error last time... in which cas we need to re-run latex
 177                 // and collect the error messages (even if they are the same).
 178                 if (!FileInfo(output_file).exist()) {
 179                         lyxerr[Debug::DEPEND]
 180                                 << "re-running LaTeX because output file doesn't exist." << endl;
 181                 } else if (!head.sumchange()) {
 182                         lyxerr[Debug::DEPEND] << "return no_change" << endl;
 183                         return NO_CHANGE;
 184                 } else {
 185                         lyxerr[Debug::DEPEND]
 186                                 << "Dependency file has changed" << endl;
 187                 }
 188
 189                 if (head.extchanged(".bib") || head.extchanged(".bst"))
 190                         run_bibtex = true;
 191         } else
 192                 lyxerr[Debug::DEPEND]
 193                         << "Dependency file does not exist" << endl;
 194
 195         /// We scan the aux file even when had_depfile = false,
 196         /// because we can run pdflatex on the file after running latex on it,
 197         /// in which case we will not need to run bibtex again.
 198         vector<Aux_Info> bibtex_info_old;
 199         if (!run_bibtex)
 200                 bibtex_info_old = scanAuxFiles(aux_file);
 201
 202         ++count;
 203         lyxerr[Debug::LATEX] << "Run #" << count << endl;
 204         if (lfun) {
 205                 ostringstream str;
 206 #if USE_BOOST_FORMAT
 207                 str << boost::format(_("LaTeX run number %1$d")) % count;
 208 #else
 209                 str << _("LaTeX run number ") << count;
 210 #endif
 211                 lfun->dispatch(FuncRequest(LFUN_MESSAGE, STRCONV(str.str())));
 212         }
 213
 214         this->operator()();
 215         scanres = scanLogFile(terr);
 216         if (scanres & ERROR_RERUN) {
 217                 lyxerr[Debug::LATEX] << "Rerunning LaTeX" << endl;
 218                 this->operator()();
 219                 scanres = scanLogFile(terr);
 220         }
 221
 222         if (scanres & ERRORS) {
 223                 deleteFilesOnError();
 224                 return scanres; // return on error
 225         }
 226
 227         vector<Aux_Info> const bibtex_info = scanAuxFiles(aux_file);
 228         if (!run_bibtex && bibtex_info_old != bibtex_info)
 229                 run_bibtex = true;
 230
 231         // update the dependencies.
 232         deplog(head); // reads the latex log
 233         head.update();
 234
 235         // 0.5
 236         // At this point we must run external programs if needed.
 237         // makeindex will be run if a .idx file changed or was generated.
 238         // And if there were undefined citations or changes in references
 239         // the .aux file is checked for signs of bibtex. Bibtex is then run
 240         // if needed.
 241
 242         // run makeindex
 243         if (head.haschanged(OnlyFilename(ChangeExtension(file, ".idx")))) {
 244                 // no checks for now
 245                 lyxerr[Debug::LATEX] << "Running MakeIndex." << endl;
 246                 if (lfun) {
 247                         lfun->dispatch(FuncRequest(LFUN_MESSAGE, _("Running MakeIndex.")));
 248                 }
 249
 250                 rerun = runMakeIndex(OnlyFilename(ChangeExtension(file, ".idx")));
 251         }
 252
 253         // run bibtex
 254         // if (scanres & UNDEF_CIT || scanres & RERUN || run_bibtex)
 255         if (scanres & UNDEF_CIT || run_bibtex) {
 256                 // Here we must scan the .aux file and look for
 257                 // "\bibdata" and/or "\bibstyle". If one of those
 258                 // tags is found -> run bibtex and set rerun = true;
 259                 // no checks for now
 260                 lyxerr[Debug::LATEX] << "Running BibTeX." << endl;
 261                 if (lfun) {
 262                         lfun->dispatch(FuncRequest(LFUN_MESSAGE, _("Running BibTeX.")));
 263                 }
 264
 265                 updateBibtexDependencies(head, bibtex_info);
 266                 rerun |= runBibTeX(bibtex_info);
 267         } else if (!had_depfile) {
 268                 /// If we run pdflatex on the file after running latex on it,
 269                 /// then we do not need to run bibtex, but we do need to
 270                 /// insert the .bib and .bst files into the .dep-pdf file.
 271                 updateBibtexDependencies(head, bibtex_info);
 272         }
 273
 274         // 1
 275         // we know on this point that latex has been run once (or we just
 276         // returned) and the question now is to decide if we need to run
 277         // it any more. This is done by asking if any of the files in the
 278         // dependency file has changed. (remember that the checksum for
 279         // a given file is reported to have changed if it just was created)
 280         //     -> if changed or rerun == true:
 281         //             run latex once more and
 282         //             update the dependency structure
 283         //     -> if not changed:
 284         //             we does nothing at this point
 285         //
 286         if (rerun || head.sumchange()) {
 287                 rerun = false;
 288                 ++count;
 289                 lyxerr[Debug::DEPEND]
 290                         << "Dep. file has changed or rerun requested" << endl;
 291                 lyxerr[Debug::LATEX]
 292                         << "Run #" << count << endl;
 293                 if (lfun) {
 294                         ostringstream str;
 295 #if USE_BOOST_FORMAT
 296                         str << boost::format(_("LaTeX run number %1$d")) % count;
 297 #else
 298                         str << _("LaTeX run number ") << count;
 299 #endif
 300                         // check lyxstring string stream and gcc 3.1 before fixing
 301                         lfun->dispatch(FuncRequest(LFUN_MESSAGE, STRCONV(str.str())));
 302                 }
 303
 304                 this->operator()();
 305                 scanres = scanLogFile(terr);
 306                 if (scanres & ERRORS) {
 307                         deleteFilesOnError();
 308                         return scanres; // return on error
 309                 }
 310
 311                 // update the depedencies
 312                 deplog(head); // reads the latex log
 313                 head.update();
 314         } else {
 315                 lyxerr[Debug::DEPEND] << "Dep. file has NOT changed" << endl;
 316         }
 317
 318         // 1.5
 319         // The inclusion of files generated by external programs like
 320         // makeindex or bibtex might have done changes to pagenumbereing,
 321         // etc. And because of this we must run the external programs
 322         // again to make sure everything is redone correctly.
 323         // Also there should be no need to run the external programs any
 324         // more after this.
 325
 326         // run makeindex if the <file>.idx has changed or was generated.
 327         if (head.haschanged(OnlyFilename(ChangeExtension(file, ".idx")))) {
 328                 // no checks for now
 329                 lyxerr[Debug::LATEX] << "Running MakeIndex." << endl;
 330                 if (lfun) {
 331                         lfun->dispatch(FuncRequest(LFUN_MESSAGE, _("Running MakeIndex.")));
 332                 }
 333
 334                 rerun = runMakeIndex(OnlyFilename(ChangeExtension(file, ".idx")));
 335         }
 336
 337         // 2
 338         // we will only run latex more if the log file asks for it.
 339         // or if the sumchange() is true.
 340         //     -> rerun asked for:
 341         //             run latex and
 342         //             remake the dependency file
 343         //             goto 2 or return if max runs are reached.
 344         //     -> rerun not asked for:
 345         //             just return (fall out of bottom of func)
 346         //
 347         while ((head.sumchange() || rerun || (scanres & RERUN))
 348                && count < MAX_RUN) {
 349                 // Yes rerun until message goes away, or until
 350                 // MAX_RUNS are reached.
 351                 rerun = false;
 352                 ++count;
 353                 lyxerr[Debug::LATEX] << "Run #" << count << endl;
 354                 if (lfun) {
 355                         ostringstream str;
 356 #if USE_BOOST_FORMAT
 357                         str << boost::format(_("LaTeX run number %1$d")) % count;
 358 #else
 359                         str << _("LaTeX run number ") << count;
 360 #endif
 361                         lfun->dispatch(FuncRequest(LFUN_MESSAGE, STRCONV(str.str())));
 362                 }
 363
 364                 this->operator()();
 365                 scanres = scanLogFile(terr);
 366                 if (scanres & ERRORS) {
 367                         deleteFilesOnError();
 368                         return scanres; // return on error
 369                 }
 370
 371                 // keep this updated
 372                 head.update();
 373         }
 374
 375         // Write the dependencies to file.
 376         head.write(depfile);
 377         lyxerr[Debug::LATEX] << "Done." << endl;
 378         return scanres;
 379 }
 380
 381
 382 int LaTeX::operator()()
 383 {
 384 #ifndef __EMX__
 385         string tmp = cmd + ' ' + QuoteName(file) + " > /dev/null";
 386 #else // cmd.exe (OS/2) causes SYS0003 error at "/dev/null"
 387         string tmp = cmd + ' ' + file + " > nul";
 388 #endif
 389         Systemcall one;
 390         return one.startscript(Systemcall::Wait, tmp);
 391 }
 392
 393
 394 bool LaTeX::runMakeIndex(string const & f)
 395 {
 396         lyxerr[Debug::LATEX] << "idx file has been made,"
 397                 " running makeindex on file "
 398                              <<  f << endl;
 399
 400         // It should be possible to set the switches for makeindex
 401         // sorting style and such. It would also be very convenient
 402         // to be able to make style files from within LyX. This has
 403         // to come for a later time.
 404         string tmp = "makeindex -c -q ";
 405         tmp += f;
 406         Systemcall one;
 407         one.startscript(Systemcall::Wait, tmp);
 408         return true;
 409 }
 410
 411
 412 vector<Aux_Info> const
 413 LaTeX::scanAuxFiles(string const & file)
 414 {
 415         vector<Aux_Info> result;
 416
 417         result.push_back(scanAuxFile(file));
 418
 419         for (int i = 1; i < 1000; ++i) {
 420                 string file2 = ChangeExtension(file, "") + '.' + tostr(i)
 421                         + ".aux";
 422                 FileInfo fi(file2);
 423                 if (!fi.exist())
 424                         break;
 425                 result.push_back(scanAuxFile(file2));
 426         }
 427         return result;
 428 }
 429
 430
 431 Aux_Info const LaTeX::scanAuxFile(string const & file)
 432 {
 433         Aux_Info result;
 434         result.aux_file = file;
 435         scanAuxFile(file, result);
 436         return result;
 437 }
 438
 439
 440 void LaTeX::scanAuxFile(string const & file, Aux_Info & aux_info)
 441 {
 442         lyxerr[Debug::LATEX] << "Scanning aux file: " << file << endl;
 443
 444         ifstream ifs(file.c_str());
 445         string token;
 446         regex reg1("\\\\citation\\{([^}]+)\\}");
 447         regex reg2("\\\\bibdata\\{([^}]+)\\}");
 448         regex reg3("\\\\bibstyle\\{([^}]+)\\}");
 449         regex reg4("\\\\@input\\{([^}]+)\\}");
 450
 451         while (getline(ifs, token)) {
 452                 token = rtrim(token, "\r");
 453 #ifndef USE_INCLUDED_STRING
 454                 smatch sub;
 455 #else
 456                 cmatch sub;
 457 #endif
 458                 if (regex_match(STRCONV(token), sub, reg1)) {
 459                         string data = STRCONV(sub.str(1));
 460                         while (!data.empty()) {
 461                                 string citation;
 462                                 data = split(data, citation, ',');
 463                                 lyxerr[Debug::LATEX] << "Citation: "
 464                                                      << citation << endl;
 465                                 aux_info.citations.insert(citation);
 466                         }
 467                 } else if (regex_match(STRCONV(token), sub, reg2)) {
 468                         string data = sub.STRCONV(str(1));
 469                         // data is now all the bib files separated by ','
 470                         // get them one by one and pass them to the helper
 471                         while (!data.empty()) {
 472                                 string database;
 473                                 data = split(data, database, ',');
 474                                 database = ChangeExtension(database, "bib");
 475                                 lyxerr[Debug::LATEX] << "Bibtex database: `"
 476                                                      << database << '\'' << endl;
 477                                 aux_info.databases.insert(database);
 478                         }
 479                 } else if (regex_match(STRCONV(token), sub, reg3)) {
 480                         string style = STRCONV(sub.str(1));
 481                         // token is now the style file
 482                         // pass it to the helper
 483                         style = ChangeExtension(style, "bst");
 484                         lyxerr[Debug::LATEX] << "Bibtex style: `"
 485                                              << style << '\'' << endl;
 486                         aux_info.styles.insert(style);
 487                 } else if (regex_match(STRCONV(token), sub, reg4)) {
 488                         string const file2 = STRCONV(sub.str(1));
 489                         scanAuxFile(file2, aux_info);
 490                 }
 491         }
 492 }
 493
 494
 495 void LaTeX::updateBibtexDependencies(DepTable & dep,
 496                                      vector<Aux_Info> const & bibtex_info)
 497 {
 498         // Since a run of Bibtex mandates more latex runs it is ok to
 499         // remove all ".bib" and ".bst" files.
 500         dep.remove_files_with_extension(".bib");
 501         dep.remove_files_with_extension(".bst");
 502         //string aux = OnlyFilename(ChangeExtension(file, ".aux"));
 503
 504         for (vector<Aux_Info>::const_iterator it = bibtex_info.begin();
 505              it != bibtex_info.end(); ++it) {
 506                 for (set<string>::const_iterator it2 = it->databases.begin();
 507                      it2 != it->databases.end(); ++it2) {
 508                         string file = findtexfile(*it2, "bib");
 509                         if (!file.empty())
 510                                 dep.insert(file, true);
 511                 }
 512
 513                 for (set<string>::const_iterator it2 = it->styles.begin();
 514                      it2 != it->styles.end(); ++it2) {
 515                         string file = findtexfile(*it2, "bst");
 516                         if (!file.empty())
 517                                 dep.insert(file, true);
 518                 }
 519         }
 520 }
 521
 522
 523 bool LaTeX::runBibTeX(vector<Aux_Info> const & bibtex_info)
 524 {
 525         bool result = false;
 526         for (vector<Aux_Info>::const_iterator it = bibtex_info.begin();
 527              it != bibtex_info.end(); ++it) {
 528                 if (it->databases.empty())
 529                         continue;
 530                 result = true;
 531
 532                 string tmp = "bibtex ";
 533                 tmp += OnlyFilename(ChangeExtension(it->aux_file, string()));
 534                 Systemcall one;
 535                 one.startscript(Systemcall::Wait, tmp);
 536         }
 537         // Return whether bibtex was run
 538         return result;
 539 }
 540
 541
 542 int LaTeX::scanLogFile(TeXErrors & terr)
 543 {
 544         int last_line = -1;
 545         int line_count = 1;
 546         int retval = NO_ERRORS;
 547         string tmp = OnlyFilename(ChangeExtension(file, ".log"));
 548         lyxerr[Debug::LATEX] << "Log file: " << tmp << endl;
 549         ifstream ifs(tmp.c_str());
 550
 551         string token;
 552         while (getline(ifs, token)) {
 553                 lyxerr[Debug::LATEX] << "Log line: " << token << endl;
 554
 555                 if (token.empty())
 556                         continue;
 557
 558                 if (prefixIs(token, "LaTeX Warning:")) {
 559                         // Here shall we handle different
 560                         // types of warnings
 561                         retval |= LATEX_WARNING;
 562                         lyxerr[Debug::LATEX] << "LaTeX Warning." << endl;
 563                         if (contains(token, "Rerun to get cross-references")) {
 564                                 retval |= RERUN;
 565                                 lyxerr[Debug::LATEX]
 566                                         << "We should rerun." << endl;
 567                         } else if (contains(token, "Citation")
 568                                    && contains(token, "on page")
 569                                    && contains(token, "undefined")) {
 570                                 retval |= UNDEF_CIT;
 571                         }
 572                 } else if (prefixIs(token, "Package")) {
 573                         // Package warnings
 574                         retval |= PACKAGE_WARNING;
 575                         if (contains(token, "natbib Warning:")) {
 576                                 // Natbib warnings
 577                                 if (contains(token, "Citation")
 578                                     && contains(token, "on page")
 579                                     && contains(token, "undefined")) {
 580                                         retval |= UNDEF_CIT;
 581                                 }
 582                         } else if (contains(token, "run BibTeX")) {
 583                                 retval |= UNDEF_CIT;
 584                         } else if (contains(token, "Rerun LaTeX") ||
 585                                    contains(token, "Rerun to get")) {
 586                                 // at least longtable.sty and bibtopic.sty
 587                                 // might use this.
 588                                 lyxerr[Debug::LATEX]
 589                                         << "We should rerun." << endl;
 590                                 retval |= RERUN;
 591                         }
 592                 } else if (token[0] == '(') {
 593                         if (contains(token, "Rerun LaTeX") ||
 594                             contains(token, "Rerun to get")) {
 595                                 // Used by natbib
 596                                 lyxerr[Debug::LATEX]
 597                                         << "We should rerun." << endl;
 598                                 retval |= RERUN;
 599                         }
 600                 } else if (prefixIs(token, "! ")) {
 601                         // Ok, we have something that looks like a TeX Error
 602                         // but what do we really have.
 603
 604                         // Just get the error description:
 605                         string desc(token, 2);
 606                         if (contains(token, "LaTeX Error:"))
 607                                 retval |= LATEX_ERROR;
 608                         // get the next line
 609                         string tmp;
 610                         int count = 0;
 611                         do {
 612                                 if (!getline(ifs, tmp))
 613                                         break;
 614                                 if (++count > 10)
 615                                         break;
 616                         } while (!prefixIs(tmp, "l."));
 617                         if (prefixIs(tmp, "l.")) {
 618                                 // we have a latex error
 619                                 retval |=  TEX_ERROR;
 620                                 if (contains(desc, "Package babel Error: You haven't defined the language"))
 621                                         retval |= ERROR_RERUN;
 622                                 // get the line number:
 623                                 int line = 0;
 624                                 sscanf(tmp.c_str(), "l.%d", &line);
 625                                 // get the rest of the message:
 626                                 string errstr(tmp, tmp.find(' '));
 627                                 errstr += '\n';
 628                                 getline(ifs, tmp);
 629                                 while (!contains(errstr, "l.")
 630                                        && !tmp.empty()
 631                                        && !prefixIs(tmp, "! ")
 632                                        && !contains(tmp, "(job aborted")) {
 633                                         errstr += tmp;
 634                                         errstr += "\n";
 635                                         getline(ifs, tmp);
 636                                 }
 637                                 lyxerr[Debug::LATEX]
 638                                         << "line: " << line << '\n'
 639                                         << "Desc: " << desc << '\n'
 640                                         << "Text: " << errstr << endl;
 641                                 if (line == last_line)
 642                                         ++line_count;
 643                                 else {
 644                                         line_count = 1;
 645                                         last_line = line;
 646                                 }
 647                                 if (line_count <= 5) {
 648                                         terr.insertError(line, desc, errstr);
 649                                         ++num_errors;
 650                                 }
 651                         }
 652                 } else {
 653                         // information messages, TeX warnings and other
 654                         // warnings we have not caught earlier.
 655                         if (prefixIs(token, "Overfull ")) {
 656                                 retval |= TEX_WARNING;
 657                         } else if (prefixIs(token, "Underfull ")) {
 658                                 retval |= TEX_WARNING;
 659                         } else if (contains(token, "Rerun to get citations")) {
 660                                 // Natbib seems to use this.
 661                                 retval |= UNDEF_CIT;
 662                         } else if (contains(token, "No pages of output")) {
 663                                 // A dvi file was not created
 664                                 retval |= NO_OUTPUT;
 665                         } else if (contains(token, "That makes 100 errors")) {
 666                                 // More than 100 errors were reprted
 667                                 retval |= TOO_MANY_ERRORS;
 668                         }
 669                 }
 670         }
 671         lyxerr[Debug::LATEX] << "Log line: " << token << endl;
 672         return retval;
 673 }
 674
 675
 676 void LaTeX::deplog(DepTable & head)
 677 {
 678         // This function reads the LaTeX log file end extracts all the external
 679         // files used by the LaTeX run. The files are then entered into the
 680         // dependency file.
 681
 682         string const logfile = OnlyFilename(ChangeExtension(file, ".log"));
 683
 684         regex reg1("\\)* *\\(([^ )]+).*");
 685         regex reg2("File: ([^ ]+).*");
 686         regex reg3("No file ([^ ]+)\\..*");
 687         regex reg4("\\\\openout[0-9]+.*=.*`([^ ]+)'\\..*");
 688         // If an index should be created, MikTex does not write a line like
 689         //    \openout# = 'sample,idx'.
 690         // but intstead only a line like this into the log:
 691         //   Writing index file sample.idx
 692         regex reg5("Writing index file ([^ ]+).*");
 693         regex unwanted("^.*\\.(aux|log|dvi|bbl|ind|glo)$");
 694
 695         ifstream ifs(logfile.c_str());
 696         while (ifs) {
 697                 // Ok, the scanning of files here is not sufficient.
 698                 // Sometimes files are named by "File: xxx" only
 699                 // So I think we should use some regexps to find files instead.
 700                 // "(\([^ ]+\)"   should match the "(file " variant
 701                 // "File: \([^ ]+\)" should match the "File: file" variant
 702                 string foundfile;
 703                 string token;
 704                 getline(ifs, token);
 705                 token = rtrim(token, "\r");
 706                 if (token.empty()) continue;
 707
 708 #ifndef USE_INCLUDED_STRING
 709                 smatch sub;
 710 #else
 711                 cmatch sub;
 712 #endif
 713                 if (regex_match(STRCONV(token), sub, reg1)) {
 714                         foundfile = STRCONV(sub.str(1));
 715                 } else if (regex_match(STRCONV(token), sub, reg2)) {
 716                         foundfile = STRCONV(sub.str(1));
 717                 } else if (regex_match(STRCONV(token), sub, reg3)) {
 718                         foundfile = STRCONV(sub.str(1));
 719                 } else if (regex_match(STRCONV(token), sub, reg4)) {
 720                         foundfile = STRCONV(sub.str(1));
 721                 } else if (regex_match(STRCONV(token), sub, reg5)) {
 722                         foundfile = STRCONV(sub.str(1));
 723                 } else {
 724                         continue;
 725                 }
 726
 727                 // convert from native os path to unix path
 728                 foundfile = os::internal_path(foundfile);
 729
 730                 lyxerr[Debug::DEPEND] << "Found file: "
 731                                       << foundfile << endl;
 732
 733                 // Ok now we found a file.
 734                 // Now we should make sure that this is a file that we can
 735                 // access through the normal paths.
 736                 // We will not try any fancy search methods to
 737                 // find the file.
 738
 739                 // (1) foundfile is an
 740                 //     absolute path and should
 741                 //     be inserted.
 742                 if (AbsolutePath(foundfile)) {
 743                         lyxerr[Debug::DEPEND] << "AbsolutePath file: "
 744                                               << foundfile << endl;
 745                         // On initial insert we want to do the update at once
 746                         // since this file can not be a file generated by
 747                         // the latex run.
 748                         if (FileInfo(foundfile).exist())
 749                                 head.insert(foundfile, true);
 750                 }
 751
 752                 // (2) foundfile is in the tmpdir
 753                 //     insert it into head
 754                 else if (FileInfo(OnlyFilename(foundfile)).exist()) {
 755                         if (regex_match(STRCONV(foundfile), unwanted)) {
 756                                 lyxerr[Debug::DEPEND]
 757                                         << "We don't want "
 758                                         << OnlyFilename(foundfile)
 759                                         << " in the dep file"
 760                                         << endl;
 761                         } else if (suffixIs(foundfile, ".tex")) {
 762                                 // This is a tex file generated by LyX
 763                                 // and latex is not likely to change this
 764                                 // during its runs.
 765                                 lyxerr[Debug::DEPEND]
 766                                         << "Tmpdir TeX file: "
 767                                         << OnlyFilename(foundfile)
 768                                         << endl;
 769                                 head.insert(foundfile, true);
 770                         } else {
 771                                 lyxerr[Debug::DEPEND]
 772                                         << "In tmpdir file:"
 773                                         << OnlyFilename(foundfile)
 774                                         << endl;
 775                                 head.insert(OnlyFilename(foundfile));
 776                         }
 777                 } else
 778                         lyxerr[Debug::DEPEND]
 779                                 << "Not a file or we are unable to find it."
 780                                 << endl;
 781         }
 782
 783         // Make sure that the main .tex file is in the dependancy file.
 784         head.insert(OnlyFilename(file), true);
 785 }