src/LaTeX.cpp

   1 /**
   2  * \file LaTeX.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Alfredo Braunstein
   7  * \author Lars Gullik Bjønnes
   8  * \author Jean-Marc Lasgouttes
   9  * \author Angus Leeming
  10  * \author Dekel Tsur
  11  * \author Jürgen Spitzmüller
  12  *
  13  * Full author contact details are available in file CREDITS.
  14  */
  15
  16 #include <config.h>
  17
  18 #include "BufferList.h"
  19 #include "LaTeX.h"
  20 #include "LyXRC.h"
  21 #include "DepTable.h"
  22
  23 #include "support/debug.h"
  24 #include "support/convert.h"
  25 #include "support/FileName.h"
  26 #include "support/filetools.h"
  27 #include "support/gettext.h"
  28 #include "support/lstrings.h"
  29 #include "support/Systemcall.h"
  30 #include "support/os.h"
  31
  32 #include "support/regex.h"
  33
  34 #include <fstream>
  35 #include <stack>
  36
  37
  38 using namespace std;
  39 using namespace lyx::support;
  40
  41 namespace lyx {
  42
  43 namespace os = support::os;
  44
  45 // TODO: in no particular order
  46 // - get rid of the call to
  47 //   BufferList::updateIncludedTeXfiles, this should either
  48 //   be done before calling LaTeX::funcs or in a completely
  49 //   different way.
  50 // - the makeindex style files should be taken care of with
  51 //   the dependency mechanism.
  52 // - we should perhaps also scan the bibtex log file
  53
  54 namespace {
  55
  56 docstring runMessage(unsigned int count)
  57 {
  58         return bformat(_("Waiting for LaTeX run number %1$d"), count);
  59 }
  60
  61 } // anon namespace
  62
  63 /*
  64  * CLASS TEXERRORS
  65  */
  66
  67 void TeXErrors::insertError(int line, docstring const & error_desc,
  68                             docstring const & error_text,
  69                             string const & child_name)
  70 {
  71         Error newerr(line, error_desc, error_text, child_name);
  72         errors.push_back(newerr);
  73 }
  74
  75
  76 bool operator==(AuxInfo const & a, AuxInfo const & o)
  77 {
  78         return a.aux_file == o.aux_file
  79                 && a.citations == o.citations
  80                 && a.databases == o.databases
  81                 && a.styles == o.styles;
  82 }
  83
  84
  85 bool operator!=(AuxInfo const & a, AuxInfo const & o)
  86 {
  87         return !(a == o);
  88 }
  89
  90
  91 /*
  92  * CLASS LaTeX
  93  */
  94
  95 LaTeX::LaTeX(string const & latex, OutputParams const & rp,
  96              FileName const & f, string const & p)
  97         : cmd(latex), file(f), path(p), runparams(rp)
  98 {
  99         num_errors = 0;
 100         if (prefixIs(cmd, "pdf")) { // Do we use pdflatex ?
 101                 depfile = FileName(file.absFileName() + ".dep-pdf");
 102                 output_file =
 103                         FileName(changeExtension(file.absFileName(), ".pdf"));
 104         } else {
 105                 depfile = FileName(file.absFileName() + ".dep");
 106                 output_file =
 107                         FileName(changeExtension(file.absFileName(), ".dvi"));
 108         }
 109 }
 110
 111
 112 void LaTeX::deleteFilesOnError() const
 113 {
 114         // currently just a dummy function.
 115
 116         // What files do we have to delete?
 117
 118         // This will at least make latex do all the runs
 119         depfile.removeFile();
 120
 121         // but the reason for the error might be in a generated file...
 122
 123         // bibtex file
 124         FileName const bbl(changeExtension(file.absFileName(), ".bbl"));
 125         bbl.removeFile();
 126
 127         // biber file
 128         FileName const bcf(changeExtension(file.absFileName(), ".bcf"));
 129         bcf.removeFile();
 130
 131         // makeindex file
 132         FileName const ind(changeExtension(file.absFileName(), ".ind"));
 133         ind.removeFile();
 134
 135         // nomencl file
 136         FileName const nls(changeExtension(file.absFileName(), ".nls"));
 137         nls.removeFile();
 138
 139         // nomencl file (old version of the package)
 140         FileName const gls(changeExtension(file.absFileName(), ".gls"));
 141         gls.removeFile();
 142
 143         // Also remove the aux file
 144         FileName const aux(changeExtension(file.absFileName(), ".aux"));
 145         aux.removeFile();
 146 }
 147
 148
 149 int LaTeX::run(TeXErrors & terr)
 150         // We know that this function will only be run if the lyx buffer
 151         // has been changed. We also know that a newly written .tex file
 152         // is always different from the previous one because of the date
 153         // in it. However it seems safe to run latex (at least) one time
 154         // each time the .tex file changes.
 155 {
 156         int scanres = NO_ERRORS;
 157         unsigned int count = 0; // number of times run
 158         num_errors = 0; // just to make sure.
 159         unsigned int const MAX_RUN = 6;
 160         DepTable head; // empty head
 161         bool rerun = false; // rerun requested
 162
 163         // The class LaTeX does not know the temp path.
 164         theBufferList().updateIncludedTeXfiles(FileName::getcwd().absFileName(),
 165                 runparams);
 166
 167         // Never write the depfile if an error was encountered.
 168
 169         // 0
 170         // first check if the file dependencies exist:
 171         //     ->If it does exist
 172         //             check if any of the files mentioned in it have
 173         //             changed (done using a checksum).
 174         //                 -> if changed:
 175         //                        run latex once and
 176         //                        remake the dependency file
 177         //                 -> if not changed:
 178         //                        just return there is nothing to do for us.
 179         //     ->if it doesn't exist
 180         //             make it and
 181         //             run latex once (we need to run latex once anyway) and
 182         //             remake the dependency file.
 183         //
 184
 185         bool had_depfile = depfile.exists();
 186         bool run_bibtex = false;
 187         FileName const aux_file(changeExtension(file.absFileName(), "aux"));
 188
 189         if (had_depfile) {
 190                 LYXERR(Debug::DEPEND, "Dependency file exists");
 191                 // Read the dep file:
 192                 had_depfile = head.read(depfile);
 193         }
 194
 195         if (had_depfile) {
 196                 // Update the checksums
 197                 head.update();
 198                 // Can't just check if anything has changed because it might
 199                 // have aborted on error last time... in which cas we need
 200                 // to re-run latex and collect the error messages
 201                 // (even if they are the same).
 202                 if (!output_file.exists()) {
 203                         LYXERR(Debug::DEPEND,
 204                                 "re-running LaTeX because output file doesn't exist.");
 205                 } else if (!head.sumchange()) {
 206                         LYXERR(Debug::DEPEND, "return no_change");
 207                         return NO_CHANGE;
 208                 } else {
 209                         LYXERR(Debug::DEPEND, "Dependency file has changed");
 210                 }
 211
 212                 if (head.extchanged(".bib") || head.extchanged(".bst"))
 213                         run_bibtex = true;
 214         } else
 215                 LYXERR(Debug::DEPEND,
 216                         "Dependency file does not exist, or has wrong format");
 217
 218         /// We scan the aux file even when had_depfile = false,
 219         /// because we can run pdflatex on the file after running latex on it,
 220         /// in which case we will not need to run bibtex again.
 221         vector<AuxInfo> bibtex_info_old;
 222         if (!run_bibtex)
 223                 bibtex_info_old = scanAuxFiles(aux_file);
 224
 225         ++count;
 226         LYXERR(Debug::LATEX, "Run #" << count);
 227         message(runMessage(count));
 228
 229         startscript();
 230         scanres = scanLogFile(terr);
 231         if (scanres & ERROR_RERUN) {
 232                 LYXERR(Debug::LATEX, "Rerunning LaTeX");
 233                 startscript();
 234                 scanres = scanLogFile(terr);
 235         }
 236
 237         if (scanres & ERRORS) {
 238                 deleteFilesOnError();
 239                 return scanres; // return on error
 240         }
 241
 242         vector<AuxInfo> const bibtex_info = scanAuxFiles(aux_file);
 243         if (!run_bibtex && bibtex_info_old != bibtex_info)
 244                 run_bibtex = true;
 245
 246         // update the dependencies.
 247         deplog(head); // reads the latex log
 248         head.update();
 249
 250         // 1
 251         // At this point we must run external programs if needed.
 252         // makeindex will be run if a .idx file changed or was generated.
 253         // And if there were undefined citations or changes in references
 254         // the .aux file is checked for signs of bibtex. Bibtex is then run
 255         // if needed.
 256
 257         // memoir (at least) writes an empty *idx file in the first place.
 258         // A second latex run is needed.
 259         FileName const idxfile(changeExtension(file.absFileName(), ".idx"));
 260         rerun = idxfile.exists() && idxfile.isFileEmpty();
 261
 262         // run makeindex
 263         if (head.haschanged(idxfile)) {
 264                 // no checks for now
 265                 LYXERR(Debug::LATEX, "Running MakeIndex.");
 266                 message(_("Running Index Processor."));
 267                 // onlyFileName() is needed for cygwin
 268                 rerun |= runMakeIndex(onlyFileName(idxfile.absFileName()),
 269                                 runparams);
 270         }
 271         FileName const nlofile(changeExtension(file.absFileName(), ".nlo"));
 272         if (head.haschanged(nlofile))
 273                 rerun |= runMakeIndexNomencl(file, ".nlo", ".nls");
 274         FileName const glofile(changeExtension(file.absFileName(), ".glo"));
 275         if (head.haschanged(glofile))
 276                 rerun |= runMakeIndexNomencl(file, ".glo", ".gls");
 277
 278         // check if we're using biber instead of bibtex
 279         // biber writes no info to the aux file, so we just check
 280         // if a bcf file exists (and if it was updated)
 281         FileName const bcffile(changeExtension(file.absFileName(), ".bcf"));
 282         biber |= head.exist(bcffile);
 283
 284         // run bibtex
 285         // if (scanres & UNDEF_CIT || scanres & RERUN || run_bibtex)
 286         if (scanres & UNDEF_CIT || run_bibtex) {
 287                 // Here we must scan the .aux file and look for
 288                 // "\bibdata" and/or "\bibstyle". If one of those
 289                 // tags is found -> run bibtex and set rerun = true;
 290                 // no checks for now
 291                 LYXERR(Debug::LATEX, "Running BibTeX.");
 292                 message(_("Running BibTeX."));
 293                 updateBibtexDependencies(head, bibtex_info);
 294                 rerun |= runBibTeX(bibtex_info, runparams);
 295                 if (biber) {
 296                         // since biber writes no info to the aux file, we have
 297                         // to parse the blg file (which only exists after biber
 298                         // was first issued)
 299                         FileName const blgfile(changeExtension(file.absFileName(), ".blg"));
 300                         if (blgfile.exists())
 301                                 scanBlgFile(head);
 302                 }
 303         } else if (!had_depfile) {
 304                 /// If we run pdflatex on the file after running latex on it,
 305                 /// then we do not need to run bibtex, but we do need to
 306                 /// insert the .bib and .bst files into the .dep-pdf file.
 307                 updateBibtexDependencies(head, bibtex_info);
 308         }
 309
 310         // 2
 311         // we know on this point that latex has been run once (or we just
 312         // returned) and the question now is to decide if we need to run
 313         // it any more. This is done by asking if any of the files in the
 314         // dependency file has changed. (remember that the checksum for
 315         // a given file is reported to have changed if it just was created)
 316         //     -> if changed or rerun == true:
 317         //             run latex once more and
 318         //             update the dependency structure
 319         //     -> if not changed:
 320         //             we do nothing at this point
 321         //
 322         if (rerun || head.sumchange()) {
 323                 rerun = false;
 324                 ++count;
 325                 LYXERR(Debug::DEPEND, "Dep. file has changed or rerun requested");
 326                 LYXERR(Debug::LATEX, "Run #" << count);
 327                 message(runMessage(count));
 328                 startscript();
 329                 scanres = scanLogFile(terr);
 330                 if (scanres & ERRORS) {
 331                         deleteFilesOnError();
 332                         return scanres; // return on error
 333                 }
 334
 335                 // update the depedencies
 336                 deplog(head); // reads the latex log
 337                 head.update();
 338         } else {
 339                 LYXERR(Debug::DEPEND, "Dep. file has NOT changed");
 340         }
 341
 342         // 3
 343         // rerun bibtex?
 344         // Complex bibliography packages such as Biblatex require
 345         // an additional bibtex cycle sometimes.
 346         if (scanres & UNDEF_CIT) {
 347                 // Here we must scan the .aux file and look for
 348                 // "\bibdata" and/or "\bibstyle". If one of those
 349                 // tags is found -> run bibtex and set rerun = true;
 350                 // no checks for now
 351                 LYXERR(Debug::LATEX, "Running BibTeX.");
 352                 message(_("Running BibTeX."));
 353                 updateBibtexDependencies(head, bibtex_info);
 354                 rerun |= runBibTeX(bibtex_info, runparams);
 355         }
 356
 357         // 4
 358         // The inclusion of files generated by external programs such as
 359         // makeindex or bibtex might have done changes to pagenumbering,
 360         // etc. And because of this we must run the external programs
 361         // again to make sure everything is redone correctly.
 362         // Also there should be no need to run the external programs any
 363         // more after this.
 364
 365         // run makeindex if the <file>.idx has changed or was generated.
 366         if (head.haschanged(idxfile)) {
 367                 // no checks for now
 368                 LYXERR(Debug::LATEX, "Running MakeIndex.");
 369                 message(_("Running Index Processor."));
 370                 // onlyFileName() is needed for cygwin
 371                 rerun = runMakeIndex(onlyFileName(changeExtension(
 372                                 file.absFileName(), ".idx")), runparams);
 373         }
 374
 375         // I am not pretty sure if need this twice.
 376         if (head.haschanged(nlofile))
 377                 rerun |= runMakeIndexNomencl(file, ".nlo", ".nls");
 378         if (head.haschanged(glofile))
 379                 rerun |= runMakeIndexNomencl(file, ".glo", ".gls");
 380
 381         // 5
 382         // we will only run latex more if the log file asks for it.
 383         // or if the sumchange() is true.
 384         //     -> rerun asked for:
 385         //             run latex and
 386         //             remake the dependency file
 387         //             goto 2 or return if max runs are reached.
 388         //     -> rerun not asked for:
 389         //             just return (fall out of bottom of func)
 390         //
 391         while ((head.sumchange() || rerun || (scanres & RERUN))
 392                && count < MAX_RUN) {
 393                 // Yes rerun until message goes away, or until
 394                 // MAX_RUNS are reached.
 395                 rerun = false;
 396                 ++count;
 397                 LYXERR(Debug::LATEX, "Run #" << count);
 398                 message(runMessage(count));
 399                 startscript();
 400                 scanres = scanLogFile(terr);
 401                 if (scanres & ERRORS) {
 402                         deleteFilesOnError();
 403                         return scanres; // return on error
 404                 }
 405
 406                 // keep this updated
 407                 head.update();
 408         }
 409
 410         // Write the dependencies to file.
 411         head.write(depfile);
 412         LYXERR(Debug::LATEX, "Done.");
 413         return scanres;
 414 }
 415
 416
 417 int LaTeX::startscript()
 418 {
 419         // onlyFileName() is needed for cygwin
 420         string tmp = cmd + ' '
 421                      + quoteName(onlyFileName(file.toFilesystemEncoding()))
 422                      + " > " + os::nulldev();
 423         Systemcall one;
 424         return one.startscript(Systemcall::Wait, tmp, path);
 425 }
 426
 427
 428 bool LaTeX::runMakeIndex(string const & f, OutputParams const & runparams,
 429                          string const & params)
 430 {
 431         string tmp = runparams.use_japanese ?
 432                 lyxrc.jindex_command : lyxrc.index_command;
 433
 434         if (!runparams.index_command.empty())
 435                 tmp = runparams.index_command;
 436
 437         LYXERR(Debug::LATEX,
 438                 "idx file has been made, running index processor ("
 439                 << tmp << ") on file " << f);
 440
 441         tmp = subst(tmp, "$$lang", runparams.document_language);
 442         if (runparams.use_indices) {
 443                 tmp = lyxrc.splitindex_command + " -m " + quoteName(tmp);
 444                 LYXERR(Debug::LATEX,
 445                 "Multiple indices. Using splitindex command: " << tmp);
 446         }
 447         tmp += ' ';
 448         tmp += quoteName(f);
 449         tmp += params;
 450         Systemcall one;
 451         one.startscript(Systemcall::Wait, tmp, path);
 452         return true;
 453 }
 454
 455
 456 bool LaTeX::runMakeIndexNomencl(FileName const & file,
 457                 string const & nlo, string const & nls)
 458 {
 459         LYXERR(Debug::LATEX, "Running MakeIndex for nomencl.");
 460         message(_("Running MakeIndex for nomencl."));
 461         string tmp = lyxrc.nomencl_command + ' ';
 462         // onlyFileName() is needed for cygwin
 463         tmp += quoteName(onlyFileName(changeExtension(file.absFileName(), nlo)));
 464         tmp += " -o "
 465                 + onlyFileName(changeExtension(file.toFilesystemEncoding(), nls));
 466         Systemcall one;
 467         one.startscript(Systemcall::Wait, tmp, path);
 468         return true;
 469 }
 470
 471
 472 vector<AuxInfo> const
 473 LaTeX::scanAuxFiles(FileName const & file)
 474 {
 475         vector<AuxInfo> result;
 476
 477         result.push_back(scanAuxFile(file));
 478
 479         string const basename = removeExtension(file.absFileName());
 480         for (int i = 1; i < 1000; ++i) {
 481                 FileName const file2(basename
 482                         + '.' + convert<string>(i)
 483                         + ".aux");
 484                 if (!file2.exists())
 485                         break;
 486                 result.push_back(scanAuxFile(file2));
 487         }
 488         return result;
 489 }
 490
 491
 492 AuxInfo const LaTeX::scanAuxFile(FileName const & file)
 493 {
 494         AuxInfo result;
 495         result.aux_file = file;
 496         scanAuxFile(file, result);
 497         return result;
 498 }
 499
 500
 501 void LaTeX::scanAuxFile(FileName const & file, AuxInfo & aux_info)
 502 {
 503         LYXERR(Debug::LATEX, "Scanning aux file: " << file);
 504
 505         ifstream ifs(file.toFilesystemEncoding().c_str());
 506         string token;
 507         static regex const reg1("\\\\citation\\{([^}]+)\\}");
 508         static regex const reg2("\\\\bibdata\\{([^}]+)\\}");
 509         static regex const reg3("\\\\bibstyle\\{([^}]+)\\}");
 510         static regex const reg4("\\\\@input\\{([^}]+)\\}");
 511
 512         while (getline(ifs, token)) {
 513                 token = rtrim(token, "\r");
 514                 smatch sub;
 515                 // FIXME UNICODE: We assume that citation keys and filenames
 516                 // in the aux file are in the file system encoding.
 517                 token = to_utf8(from_filesystem8bit(token));
 518                 if (regex_match(token, sub, reg1)) {
 519                         string data = sub.str(1);
 520                         while (!data.empty()) {
 521                                 string citation;
 522                                 data = split(data, citation, ',');
 523                                 LYXERR(Debug::LATEX, "Citation: " << citation);
 524                                 aux_info.citations.insert(citation);
 525                         }
 526                 } else if (regex_match(token, sub, reg2)) {
 527                         string data = sub.str(1);
 528                         // data is now all the bib files separated by ','
 529                         // get them one by one and pass them to the helper
 530                         while (!data.empty()) {
 531                                 string database;
 532                                 data = split(data, database, ',');
 533                                 database = changeExtension(database, "bib");
 534                                 LYXERR(Debug::LATEX, "BibTeX database: `" << database << '\'');
 535                                 aux_info.databases.insert(database);
 536                         }
 537                 } else if (regex_match(token, sub, reg3)) {
 538                         string style = sub.str(1);
 539                         // token is now the style file
 540                         // pass it to the helper
 541                         style = changeExtension(style, "bst");
 542                         LYXERR(Debug::LATEX, "BibTeX style: `" << style << '\'');
 543                         aux_info.styles.insert(style);
 544                 } else if (regex_match(token, sub, reg4)) {
 545                         string const file2 = sub.str(1);
 546                         scanAuxFile(makeAbsPath(file2), aux_info);
 547                 }
 548         }
 549 }
 550
 551
 552 void LaTeX::updateBibtexDependencies(DepTable & dep,
 553                                      vector<AuxInfo> const & bibtex_info)
 554 {
 555         // Since a run of Bibtex mandates more latex runs it is ok to
 556         // remove all ".bib" and ".bst" files.
 557         dep.remove_files_with_extension(".bib");
 558         dep.remove_files_with_extension(".bst");
 559         //string aux = OnlyFileName(ChangeExtension(file, ".aux"));
 560
 561         for (vector<AuxInfo>::const_iterator it = bibtex_info.begin();
 562              it != bibtex_info.end(); ++it) {
 563                 for (set<string>::const_iterator it2 = it->databases.begin();
 564                      it2 != it->databases.end(); ++it2) {
 565                         FileName const file = findtexfile(*it2, "bib");
 566                         if (!file.empty())
 567                                 dep.insert(file, true);
 568                 }
 569
 570                 for (set<string>::const_iterator it2 = it->styles.begin();
 571                      it2 != it->styles.end(); ++it2) {
 572                         FileName const file = findtexfile(*it2, "bst");
 573                         if (!file.empty())
 574                                 dep.insert(file, true);
 575                 }
 576         }
 577
 578         // biber writes nothing into the aux file.
 579         // Instead, we have to scan the blg file
 580         if (biber) {
 581                 scanBlgFile(dep);
 582         }
 583 }
 584
 585
 586 bool LaTeX::runBibTeX(vector<AuxInfo> const & bibtex_info,
 587                       OutputParams const & runparams)
 588 {
 589         bool result = false;
 590         for (vector<AuxInfo>::const_iterator it = bibtex_info.begin();
 591              it != bibtex_info.end(); ++it) {
 592                 if (!biber && it->databases.empty())
 593                         continue;
 594                 result = true;
 595
 596                 string tmp = runparams.use_japanese ?
 597                         lyxrc.jbibtex_command : lyxrc.bibtex_command;
 598
 599                 if (!runparams.bibtex_command.empty())
 600                         tmp = runparams.bibtex_command;
 601                 tmp += " ";
 602                 // onlyFileName() is needed for cygwin
 603                 tmp += quoteName(onlyFileName(removeExtension(
 604                                 it->aux_file.absFileName())));
 605                 Systemcall one;
 606                 one.startscript(Systemcall::Wait, tmp, path);
 607         }
 608         // Return whether bibtex was run
 609         return result;
 610 }
 611
 612
 613 int LaTeX::scanLogFile(TeXErrors & terr)
 614 {
 615         int last_line = -1;
 616         int line_count = 1;
 617         int retval = NO_ERRORS;
 618         string tmp =
 619                 onlyFileName(changeExtension(file.absFileName(), ".log"));
 620         LYXERR(Debug::LATEX, "Log file: " << tmp);
 621         FileName const fn = FileName(makeAbsPath(tmp));
 622         ifstream ifs(fn.toFilesystemEncoding().c_str());
 623         bool fle_style = false;
 624         static regex file_line_error(".+\\.\\D+:[0-9]+: (.+)");
 625         static regex child_file(".*([0-9]+[A-Za-z]*_.+\\.tex).*");
 626         // Flag for 'File ended while scanning' message.
 627         // We need to wait for subsequent processing.
 628         string wait_for_error;
 629         string child_name;
 630         int pnest = 0;
 631         stack <pair<string, int> > child;
 632
 633         string token;
 634         while (getline(ifs, token)) {
 635                 // MikTeX sometimes inserts \0 in the log file. They can't be
 636                 // removed directly with the existing string utility
 637                 // functions, so convert them first to \r, and remove all
 638                 // \r's afterwards, since we need to remove them anyway.
 639                 token = subst(token, '\0', '\r');
 640                 token = subst(token, "\r", "");
 641                 smatch sub;
 642
 643                 LYXERR(Debug::LATEX, "Log line: " << token);
 644
 645                 if (token.empty())
 646                         continue;
 647
 648                 // Track child documents
 649                 for (size_t i = 0; i < token.length(); ++i) {
 650                         if (token[i] == '(') {
 651                                 ++pnest;
 652                                 size_t j = token.find('(', i + 1);
 653                                 size_t len = j == string::npos
 654                                                 ? token.substr(i + 1).length()
 655                                                 : j - i - 1;
 656                                 if (regex_match(token.substr(i + 1, len),
 657                                                         sub, child_file)) {
 658                                         string const name = sub.str(1);
 659                                         child.push(make_pair(name, pnest));
 660                                         i += len;
 661                                 }
 662                         } else if (token[i] == ')') {
 663                                 if (!child.empty()
 664                                     && child.top().second == pnest)
 665                                         child.pop();
 666                                 --pnest;
 667                         }
 668                 }
 669                 child_name = child.empty() ? empty_string() : child.top().first;
 670
 671                 if (contains(token, "file:line:error style messages enabled"))
 672                         fle_style = true;
 673
 674                 if (prefixIs(token, "LaTeX Warning:") ||
 675                     prefixIs(token, "! pdfTeX warning")) {
 676                         // Here shall we handle different
 677                         // types of warnings
 678                         retval |= LATEX_WARNING;
 679                         LYXERR(Debug::LATEX, "LaTeX Warning.");
 680                         if (contains(token, "Rerun to get cross-references")) {
 681                                 retval |= RERUN;
 682                                 LYXERR(Debug::LATEX, "We should rerun.");
 683                         // package clefval needs 2 latex runs before bibtex
 684                         } else if (contains(token, "Value of")
 685                                    && contains(token, "on page")
 686                                    && contains(token, "undefined")) {
 687                                 retval |= ERROR_RERUN;
 688                                 LYXERR(Debug::LATEX, "Force rerun.");
 689                         // package etaremune
 690                         } else if (contains(token, "Etaremune labels have changed")) {
 691                                 retval |= ERROR_RERUN;
 692                                 LYXERR(Debug::LATEX, "Force rerun.");
 693                         } else if (contains(token, "Citation")
 694                                    && contains(token, "on page")
 695                                    && contains(token, "undefined")) {
 696                                 retval |= UNDEF_CIT;
 697                         }
 698                 } else if (prefixIs(token, "Package")) {
 699                         // Package warnings
 700                         retval |= PACKAGE_WARNING;
 701                         if (contains(token, "natbib Warning:")) {
 702                                 // Natbib warnings
 703                                 if (contains(token, "Citation")
 704                                     && contains(token, "on page")
 705                                     && contains(token, "undefined")) {
 706                                         retval |= UNDEF_CIT;
 707                                 }
 708                         } else if (contains(token, "run BibTeX")) {
 709                                 retval |= UNDEF_CIT;
 710                         } else if (contains(token, "run Biber")) {
 711                                 retval |= UNDEF_CIT;
 712                                 biber = true;
 713                         } else if (contains(token, "Rerun LaTeX") ||
 714                                    contains(token, "Please rerun LaTeX") ||
 715                                    contains(token, "Rerun to get")) {
 716                                 // at least longtable.sty and bibtopic.sty
 717                                 // might use this.
 718                                 LYXERR(Debug::LATEX, "We should rerun.");
 719                                 retval |= RERUN;
 720                         }
 721                 } else if (prefixIs(token, "LETTRE WARNING:")) {
 722                         if (contains(token, "veuillez recompiler")) {
 723                                 // lettre.cls
 724                                 LYXERR(Debug::LATEX, "We should rerun.");
 725                                 retval |= RERUN;
 726                         }
 727                 } else if (token[0] == '(') {
 728                         if (contains(token, "Rerun LaTeX") ||
 729                             contains(token, "Rerun to get")) {
 730                                 // Used by natbib
 731                                 LYXERR(Debug::LATEX, "We should rerun.");
 732                                 retval |= RERUN;
 733                         }
 734                 } else if (prefixIs(token, "! ")
 735                             || (fle_style
 736                                 && regex_match(token, sub, file_line_error)
 737                                 && !contains(token, "pdfTeX warning"))) {
 738                            // Ok, we have something that looks like a TeX Error
 739                            // but what do we really have.
 740
 741                         // Just get the error description:
 742                         string desc;
 743                         if (prefixIs(token, "! "))
 744                                 desc = string(token, 2);
 745                         else if (fle_style)
 746                                 desc = sub.str();
 747                         if (contains(token, "LaTeX Error:"))
 748                                 retval |= LATEX_ERROR;
 749
 750                         if (prefixIs(token, "! File ended while scanning")){
 751                                 if (prefixIs(token, "! File ended while scanning use of \\Hy@setref@link.")){
 752                                         // bug 7344. We must rerun LaTeX if hyperref has been toggled.
 753                                         retval |= ERROR_RERUN;
 754                                         LYXERR(Debug::LATEX, "Force rerun.");
 755                                 } else {
 756                                         // bug 6445. At this point its not clear we finish with error.
 757                                         wait_for_error = desc;
 758                                         continue;
 759                                 }
 760                         }
 761
 762                         if (prefixIs(token, "! Paragraph ended before \\Hy@setref@link was complete.")){
 763                                         // bug 7344. We must rerun LaTeX if hyperref has been toggled.
 764                                         retval |= ERROR_RERUN;
 765                                         LYXERR(Debug::LATEX, "Force rerun.");
 766                         }
 767
 768                         if (!wait_for_error.empty() && prefixIs(token, "! Emergency stop.")){
 769                                 retval |= LATEX_ERROR;
 770                                 string errstr;
 771                                 int count = 0;
 772                                 errstr = wait_for_error;
 773                                 do {
 774                                         if (!getline(ifs, tmp))
 775                                                 break;
 776                                         tmp = rtrim(tmp, "\r");
 777                                         errstr += "\n" + tmp;
 778                                         if (++count > 5)
 779                                                 break;
 780                                 } while (!contains(tmp, "(job aborted"));
 781
 782                                 terr.insertError(0,
 783                                                  from_local8bit("Emergency stop"),
 784                                                  from_local8bit(errstr),
 785                                                  child_name);
 786                         }
 787
 788                         // get the next line
 789                         string tmp;
 790                         int count = 0;
 791                         do {
 792                                 if (!getline(ifs, tmp))
 793                                         break;
 794                                 tmp = rtrim(tmp, "\r");
 795                                 if (++count > 10)
 796                                         break;
 797                         } while (!prefixIs(tmp, "l."));
 798                         if (prefixIs(tmp, "l.")) {
 799                                 // we have a latex error
 800                                 retval |=  TEX_ERROR;
 801                                 if (contains(desc,
 802                                     "Package babel Error: You haven't defined the language") ||
 803                                     contains(desc,
 804                                     "Package babel Error: You haven't loaded the option"))
 805                                         retval |= ERROR_RERUN;
 806                                 // get the line number:
 807                                 int line = 0;
 808                                 sscanf(tmp.c_str(), "l.%d", &line);
 809                                 // get the rest of the message:
 810                                 string errstr(tmp, tmp.find(' '));
 811                                 errstr += '\n';
 812                                 getline(ifs, tmp);
 813                                 tmp = rtrim(tmp, "\r");
 814                                 while (!contains(errstr, "l.")
 815                                        && !tmp.empty()
 816                                        && !prefixIs(tmp, "! ")
 817                                        && !contains(tmp, "(job aborted")) {
 818                                         errstr += tmp;
 819                                         errstr += "\n";
 820                                         getline(ifs, tmp);
 821                                         tmp = rtrim(tmp, "\r");
 822                                 }
 823                                 LYXERR(Debug::LATEX, "line: " << line << '\n'
 824                                         << "Desc: " << desc << '\n' << "Text: " << errstr);
 825                                 if (line == last_line)
 826                                         ++line_count;
 827                                 else {
 828                                         line_count = 1;
 829                                         last_line = line;
 830                                 }
 831                                 if (line_count <= 5) {
 832                                         // FIXME UNICODE
 833                                         // We have no idea what the encoding of
 834                                         // the log file is.
 835                                         // It seems that the output from the
 836                                         // latex compiler itself is pure ASCII,
 837                                         // but it can include bits from the
 838                                         // document, so whatever encoding we
 839                                         // assume here it can be wrong.
 840                                         terr.insertError(line,
 841                                                          from_local8bit(desc),
 842                                                          from_local8bit(errstr),
 843                                                          child_name);
 844                                         ++num_errors;
 845                                 }
 846                         }
 847                 } else {
 848                         // information messages, TeX warnings and other
 849                         // warnings we have not caught earlier.
 850                         if (prefixIs(token, "Overfull ")) {
 851                                 retval |= TEX_WARNING;
 852                         } else if (prefixIs(token, "Underfull ")) {
 853                                 retval |= TEX_WARNING;
 854                         } else if (contains(token, "Rerun to get citations")) {
 855                                 // Natbib seems to use this.
 856                                 retval |= UNDEF_CIT;
 857                         } else if (contains(token, "No pages of output")) {
 858                                 // A dvi file was not created
 859                                 retval |= NO_OUTPUT;
 860                         } else if (contains(token, "That makes 100 errors")) {
 861                                 // More than 100 errors were reprted
 862                                 retval |= TOO_MANY_ERRORS;
 863                         } else if (prefixIs(token, "!pdfTeX error:")){
 864                                 // otherwise we dont catch e.g.:
 865                                 // !pdfTeX error: pdflatex (file feyn10): Font feyn10 at 600 not found
 866                                 retval |= ERRORS;
 867                                         terr.insertError(0,
 868                                                          from_local8bit("pdfTeX Error"),
 869                                                          from_local8bit(token),
 870                                                          child_name);
 871                         }
 872                 }
 873         }
 874         LYXERR(Debug::LATEX, "Log line: " << token);
 875         return retval;
 876 }
 877
 878
 879 namespace {
 880
 881 bool insertIfExists(FileName const & absname, DepTable & head)
 882 {
 883         if (absname.exists() && !absname.isDirectory()) {
 884                 head.insert(absname, true);
 885                 return true;
 886         }
 887         return false;
 888 }
 889
 890
 891 bool handleFoundFile(string const & ff, DepTable & head)
 892 {
 893         // convert from native os path to unix path
 894         string foundfile = os::internal_path(trim(ff));
 895
 896         LYXERR(Debug::DEPEND, "Found file: " << foundfile);
 897
 898         // Ok now we found a file.
 899         // Now we should make sure that this is a file that we can
 900         // access through the normal paths.
 901         // We will not try any fancy search methods to
 902         // find the file.
 903
 904         // (1) foundfile is an
 905         //     absolute path and should
 906         //     be inserted.
 907         FileName absname;
 908         if (FileName::isAbsolute(foundfile)) {
 909                 LYXERR(Debug::DEPEND, "AbsolutePath file: " << foundfile);
 910                 // On initial insert we want to do the update at once
 911                 // since this file cannot be a file generated by
 912                 // the latex run.
 913                 absname.set(foundfile);
 914                 if (!insertIfExists(absname, head)) {
 915                         // check for spaces
 916                         string strippedfile = foundfile;
 917                         while (contains(strippedfile, " ")) {
 918                                 // files with spaces are often enclosed in quotation
 919                                 // marks; those have to be removed
 920                                 string unquoted = subst(strippedfile, "\"", "");
 921                                 absname.set(unquoted);
 922                                 if (insertIfExists(absname, head))
 923                                         return true;
 924                                 // strip off part after last space and try again
 925                                 string tmp = strippedfile;
 926                                 string const stripoff =
 927                                         rsplit(tmp, strippedfile, ' ');
 928                                 absname.set(strippedfile);
 929                                 if (insertIfExists(absname, head))
 930                                         return true;
 931                         }
 932                 }
 933         }
 934
 935         string onlyfile = onlyFileName(foundfile);
 936         absname = makeAbsPath(onlyfile);
 937
 938         // check for spaces
 939         while (contains(foundfile, ' ')) {
 940                 if (absname.exists())
 941                         // everything o.k.
 942                         break;
 943                 else {
 944                         // files with spaces are often enclosed in quotation
 945                         // marks; those have to be removed
 946                         string unquoted = subst(foundfile, "\"", "");
 947                         absname = makeAbsPath(unquoted);
 948                         if (absname.exists())
 949                                 break;
 950                         // strip off part after last space and try again
 951                         string strippedfile;
 952                         string const stripoff =
 953                                 rsplit(foundfile, strippedfile, ' ');
 954                         foundfile = strippedfile;
 955                         onlyfile = onlyFileName(strippedfile);
 956                         absname = makeAbsPath(onlyfile);
 957                 }
 958         }
 959
 960         // (2) foundfile is in the tmpdir
 961         //     insert it into head
 962         if (absname.exists() && !absname.isDirectory()) {
 963                 // FIXME: This regex contained glo, but glo is used by the old
 964                 // version of nomencl.sty. Do we need to put it back?
 965                 static regex const unwanted("^.*\\.(aux|log|dvi|bbl|ind)$");
 966                 if (regex_match(onlyfile, unwanted)) {
 967                         LYXERR(Debug::DEPEND, "We don't want " << onlyfile
 968                                 << " in the dep file");
 969                 } else if (suffixIs(onlyfile, ".tex")) {
 970                         // This is a tex file generated by LyX
 971                         // and latex is not likely to change this
 972                         // during its runs.
 973                         LYXERR(Debug::DEPEND, "Tmpdir TeX file: " << onlyfile);
 974                         head.insert(absname, true);
 975                 } else {
 976                         LYXERR(Debug::DEPEND, "In tmpdir file:" << onlyfile);
 977                         head.insert(absname);
 978                 }
 979                 return true;
 980         } else {
 981                 LYXERR(Debug::DEPEND, "Not a file or we are unable to find it.");
 982                 return false;
 983         }
 984 }
 985
 986
 987 bool completeFilename(string const & ff, DepTable & head)
 988 {
 989         // If we do not find a dot, we suspect
 990         // a fragmental file name
 991         if (!contains(ff, '.'))
 992                 return false;
 993
 994         // if we have a dot, we let handleFoundFile decide
 995         return handleFoundFile(ff, head);
 996 }
 997
 998 } // anon namespace
 999
1000
1001 void LaTeX::deplog(DepTable & head)
1002 {
1003         // This function reads the LaTeX log file end extracts all the
1004         // external files used by the LaTeX run. The files are then
1005         // entered into the dependency file.
1006
1007         string const logfile =
1008                 onlyFileName(changeExtension(file.absFileName(), ".log"));
1009
1010         static regex const reg1("File: (.+).*");
1011         static regex const reg2("No file (.+)(.).*");
1012         static regex const reg3("\\\\openout[0-9]+.*=.*`(.+)(..).*");
1013         // If an index should be created, MikTex does not write a line like
1014         //    \openout# = 'sample.idx'.
1015         // but instead only a line like this into the log:
1016         //   Writing index file sample.idx
1017         static regex const reg4("Writing index file (.+).*");
1018         // files also can be enclosed in <...>
1019         static regex const reg5("[^<]*<([^>]+)(.).*");
1020         static regex const regoldnomencl("Writing glossary file (.+).*");
1021         static regex const regnomencl("Writing nomenclature file (.+).*");
1022         // If a toc should be created, MikTex does not write a line like
1023         //    \openout# = `sample.toc'.
1024         // but only a line like this into the log:
1025         //    \tf@toc=\write#
1026         // This line is also written by tetex.
1027         // This line is not present if no toc should be created.
1028         static regex const miktexTocReg("\\\\tf@toc=\\\\write.*");
1029         // (...) somewhere on the line
1030         static regex const reg6(".*\\([^)]+.*");
1031
1032         FileName const fn = makeAbsPath(logfile);
1033         ifstream ifs(fn.toFilesystemEncoding().c_str());
1034         string lastline;
1035         while (ifs) {
1036                 // Ok, the scanning of files here is not sufficient.
1037                 // Sometimes files are named by "File: xxx" only
1038                 // Therefore we use some regexps to find files instead.
1039                 // Note: all file names and paths might contains spaces.
1040                 // Also, file names might be broken across lines. Therefore
1041                 // we mark (potential) fragments and merge those lines.
1042                 bool fragment = false;
1043                 string token;
1044                 getline(ifs, token);
1045                 // MikTeX sometimes inserts \0 in the log file. They can't be
1046                 // removed directly with the existing string utility
1047                 // functions, so convert them first to \r, and remove all
1048                 // \r's afterwards, since we need to remove them anyway.
1049                 token = subst(token, '\0', '\r');
1050                 token = subst(token, "\r", "");
1051                 if (token.empty() || token == ")") {
1052                         lastline = string();
1053                         continue;
1054                 }
1055
1056                 // FIXME UNICODE: We assume that the file names in the log
1057                 // file are in the file system encoding.
1058                 token = to_utf8(from_filesystem8bit(token));
1059
1060                 // Sometimes, filenames are broken across lines.
1061                 // We care for that and save suspicious lines.
1062                 // Here we exclude some cases where we are sure
1063                 // that there is no continued filename
1064                 if (!lastline.empty()) {
1065                         static regex const package_info("Package \\w+ Info: .*");
1066                         static regex const package_warning("Package \\w+ Warning: .*");
1067                         if (prefixIs(token, "File:") || prefixIs(token, "(Font)")
1068                             || prefixIs(token, "Package:")
1069                             || prefixIs(token, "Language:")
1070                             || prefixIs(token, "LaTeX Info:")
1071                             || prefixIs(token, "LaTeX Font Info:")
1072                             || prefixIs(token, "\\openout[")
1073                             || prefixIs(token, "))")
1074                             || regex_match(token, package_info)
1075                             || regex_match(token, package_warning))
1076                                 lastline = string();
1077                 }
1078
1079                 if (!lastline.empty())
1080                         // probably a continued filename from last line
1081                         token = lastline + token;
1082                 if (token.length() > 255) {
1083                         // string too long. Cut off.
1084                         token.erase(0, token.length() - 251);
1085                 }
1086
1087                 smatch sub;
1088
1089                 // (1) "File: file.ext"
1090                 if (regex_match(token, sub, reg1)) {
1091                         // is this a fragmental file name?
1092                         fragment = !completeFilename(sub.str(1), head);
1093                         // However, ...
1094                         if (suffixIs(token, ")"))
1095                                 // no fragment for sure
1096                                 fragment = false;
1097                 // (2) "No file file.ext"
1098                 } else if (regex_match(token, sub, reg2)) {
1099                         // file names must contains a dot, line ends with dot
1100                         if (contains(sub.str(1), '.') && sub.str(2) == ".")
1101                                 fragment = !handleFoundFile(sub.str(1), head);
1102                         else
1103                                 // we suspect a line break
1104                                 fragment = true;
1105                 // (3) "\openout<nr> = `file.ext'."
1106                 } else if (regex_match(token, sub, reg3)) {
1107                         // search for closing '. at the end of the line
1108                         if (sub.str(2) == "\'.")
1109                                 fragment = !handleFoundFile(sub.str(1), head);
1110                         else
1111                                 // potential fragment
1112                                 fragment = true;
1113                 // (4) "Writing index file file.ext"
1114                 } else if (regex_match(token, sub, reg4))
1115                         // fragmential file name?
1116                         fragment = !completeFilename(sub.str(1), head);
1117                 // (5) "<file.ext>"
1118                 else if (regex_match(token, sub, reg5)) {
1119                         // search for closing '>' and dot ('*.*>') at the eol
1120                         if (contains(sub.str(1), '.') && sub.str(2) == ">")
1121                                 fragment = !handleFoundFile(sub.str(1), head);
1122                         else
1123                                 // potential fragment
1124                                 fragment = true;
1125                 // (6) "Writing nomenclature file file.ext"
1126                 } else if (regex_match(token, sub, regnomencl) ||
1127                            regex_match(token, sub, regoldnomencl))
1128                         // fragmental file name?
1129                         fragment= !completeFilename(sub.str(1), head);
1130                 // (7) "\tf@toc=\write<nr>" (for MikTeX)
1131                 else if (regex_match(token, sub, miktexTocReg))
1132                         fragment = !handleFoundFile(onlyFileName(changeExtension(
1133                                                 file.absFileName(), ".toc")), head);
1134                 else
1135                         // not found, but we won't check further
1136                         fragment = false;
1137
1138                 // (8) "(file.ext"
1139                 // note that we can have several of these on one line
1140                 // this must be queried separated, because of
1141                 // cases such as "File: file.ext (type eps)"
1142                 // where "File: file.ext" would be skipped
1143                 if (regex_match(token, sub, reg6)) {
1144                         // search for strings in (...)
1145                         static regex reg6_1("\\(([^()]+)(.)");
1146                         smatch what;
1147                         string::const_iterator first = token.begin();
1148                         string::const_iterator end = token.end();
1149
1150                         while (regex_search(first, end, what, reg6_1)) {
1151                                 // if we have a dot, try to handle as file
1152                                 if (contains(what.str(1), '.')) {
1153                                         first = what[0].second;
1154                                         if (what.str(2) == ")") {
1155                                                 handleFoundFile(what.str(1), head);
1156                                                 // since we had a closing bracket,
1157                                                 // do not investigate further
1158                                                 fragment = false;
1159                                         } else
1160                                                 // if we have no closing bracket,
1161                                                 // try to handle as file nevertheless
1162                                                 fragment = !handleFoundFile(
1163                                                         what.str(1) + what.str(2), head);
1164                                 }
1165                                 // if we do not have a dot, check if the line has
1166                                 // a closing bracket (else, we suspect a line break)
1167                                 else if (what.str(2) != ")") {
1168                                         first = what[0].second;
1169                                         fragment = true;
1170                                 } else {
1171                                         // we have a closing bracket, so the content
1172                                         // is not a file name.
1173                                         // no need to investigate further
1174                                         first = what[0].second;
1175                                         fragment = false;
1176                                 }
1177                         }
1178                 }
1179
1180                 if (fragment)
1181                         // probable linebreak within file name:
1182                         // save this line
1183                         lastline = token;
1184                 else
1185                         // no linebreak: reset
1186                         lastline = string();
1187         }
1188
1189         // Make sure that the main .tex file is in the dependency file.
1190         head.insert(file, true);
1191 }
1192
1193
1194 void LaTeX::scanBlgFile(DepTable & dep)
1195 {
1196         FileName const blg_file(changeExtension(file.absFileName(), "blg"));
1197         LYXERR(Debug::LATEX, "Scanning blg file: " << blg_file);
1198
1199         ifstream ifs(blg_file.toFilesystemEncoding().c_str());
1200         string token;
1201         static regex const reg1(".*Found (bibtex|BibTeX) data (file|source) '([^']+).*");
1202
1203         while (getline(ifs, token)) {
1204                 token = rtrim(token, "\r");
1205                 smatch sub;
1206                 // FIXME UNICODE: We assume that citation keys and filenames
1207                 // in the aux file are in the file system encoding.
1208                 token = to_utf8(from_filesystem8bit(token));
1209                 if (regex_match(token, sub, reg1)) {
1210                         string data = sub.str(3);
1211                         if (!data.empty()) {
1212                                 LYXERR(Debug::LATEX, "Found bib file: " << data);
1213                                 handleFoundFile(data, dep);
1214                         }
1215                 }
1216         }
1217 }
1218
1219
1220 } // namespace lyx