src/LaTeX.C

   1 /**
   2  * \file LaTeX.C
   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  *
  12  * Full author contact details are available in file CREDITS.
  13  */
  14
  15 #include <config.h>
  16
  17 #include "LaTeX.h"
  18 #include "bufferlist.h"
  19 #include "gettext.h"
  20 #include "debug.h"
  21 #include "DepTable.h"
  22 #include "support/filetools.h"
  23 #include "support/FileInfo.h"
  24 #include "support/tostr.h"
  25 #include "support/lstrings.h"
  26 #include "support/lyxlib.h"
  27 #include "support/systemcall.h"
  28 #include "support/os.h"
  29
  30 #include <boost/regex.hpp>
  31
  32 #include <fstream>
  33
  34 using lyx::support::AbsolutePath;
  35 using lyx::support::bformat;
  36 using lyx::support::ChangeExtension;
  37 using lyx::support::contains;
  38 using lyx::support::FileInfo;
  39 using lyx::support::findtexfile;
  40 using lyx::support::getcwd;
  41 using lyx::support::OnlyFilename;
  42 using lyx::support::os;
  43 using lyx::support::prefixIs;
  44 using lyx::support::QuoteName;
  45 using lyx::support::rtrim;
  46 using lyx::support::split;
  47 using lyx::support::suffixIs;
  48 using lyx::support::Systemcall;
  49 using lyx::support::unlink;
  50
  51 #ifndef CXX_GLOBAL_CSTD
  52 using std::sscanf;
  53 #endif
  54
  55 using std::endl;
  56 using std::getline;
  57
  58 using std::ifstream;
  59 using std::set;
  60 using std::vector;
  61
  62 using boost::regex;
  63
  64 #ifndef USE_INCLUDED_STRING
  65 using boost::smatch;
  66 #else
  67 using boost::cmatch;
  68 #endif
  69
  70
  71 // TODO: in no particular order
  72 // - get rid of the extern BufferList and the call to
  73 //   BufferList::updateIncludedTeXfiles, this should either
  74 //   be done before calling LaTeX::funcs or in a completely
  75 //   different way.
  76 // - the bibtex command options should be supported.
  77 // - the makeindex style files should be taken care of with
  78 //   the dependency mechanism.
  79 // - makeindex commandline options should be supported
  80 // - somewhere support viewing of bibtex and makeindex log files.
  81 // - we should perhaps also scan the bibtex log file
  82 // - we should perhaps also scan the bibtex log file
  83
  84 extern BufferList bufferlist;
  85
  86 namespace {
  87
  88 string runMessage(unsigned int count)
  89 {
  90         return bformat(_("Waiting for LaTeX run number %1$s"), tostr(count));
  91 }
  92
  93 };
  94
  95 /*
  96  * CLASS TEXERRORS
  97  */
  98
  99 void TeXErrors::insertError(int line, string const & error_desc,
 100                             string const & error_text)
 101 {
 102         Error newerr(line, error_desc, error_text);
 103         errors.push_back(newerr);
 104 }
 105
 106
 107 bool operator==(Aux_Info const & a, Aux_Info const & o)
 108 {
 109         return a.aux_file == o.aux_file &&
 110                 a.citations == o.citations &&
 111                 a.databases == o.databases &&
 112                 a.styles == o.styles;
 113 }
 114
 115
 116 bool operator!=(Aux_Info const & a, Aux_Info const & o)
 117 {
 118         return !(a == o);
 119 }
 120
 121
 122 /*
 123  * CLASS LaTeX
 124  */
 125
 126 LaTeX::LaTeX(string const & latex, LatexRunParams const & rp,
 127              string const & f, string const & p)
 128         : cmd(latex), file(f), path(p), runparams(rp)
 129 {
 130         num_errors = 0;
 131         depfile = file + ".dep";
 132         if (prefixIs(cmd, "pdf")) { // Do we use pdflatex ?
 133                 depfile += "-pdf";
 134                 output_file = ChangeExtension(file,".pdf");
 135         } else {
 136                 output_file = ChangeExtension(file,".dvi");
 137         }
 138 }
 139
 140
 141 void LaTeX::deleteFilesOnError() const
 142 {
 143         // currently just a dummy function.
 144
 145         // What files do we have to delete?
 146
 147         // This will at least make latex do all the runs
 148         unlink(depfile);
 149
 150         // but the reason for the error might be in a generated file...
 151
 152         string const ofname = OnlyFilename(file);
 153
 154         // bibtex file
 155         string const bbl = ChangeExtension(ofname, ".bbl");
 156         unlink(bbl);
 157
 158         // makeindex file
 159         string const ind = ChangeExtension(ofname, ".ind");
 160         unlink(ind);
 161
 162         // Also remove the aux file
 163         string const aux = ChangeExtension(ofname, ".aux");
 164         unlink(aux);
 165 }
 166
 167
 168 int LaTeX::run(TeXErrors & terr)
 169         // We know that this function will only be run if the lyx buffer
 170         // has been changed. We also know that a newly written .tex file
 171         // is always different from the previous one because of the date
 172         // in it. However it seems safe to run latex (at least) on time each
 173         // time the .tex file changes.
 174 {
 175         int scanres = NO_ERRORS;
 176         unsigned int count = 0; // number of times run
 177         num_errors = 0; // just to make sure.
 178         unsigned int const MAX_RUN = 6;
 179         DepTable head; // empty head
 180         bool rerun = false; // rerun requested
 181
 182         // The class LaTeX does not know the temp path.
 183         bufferlist.updateIncludedTeXfiles(getcwd(), runparams);
 184
 185         // Never write the depfile if an error was encountered.
 186
 187         // 0
 188         // first check if the file dependencies exist:
 189         //     ->If it does exist
 190         //             check if any of the files mentioned in it have
 191         //             changed (done using a checksum).
 192         //                 -> if changed:
 193         //                        run latex once and
 194         //                        remake the dependency file
 195         //                 -> if not changed:
 196         //                        just return there is nothing to do for us.
 197         //     ->if it doesn't exist
 198         //             make it and
 199         //             run latex once (we need to run latex once anyway) and
 200         //             remake the dependency file.
 201         //
 202
 203         FileInfo fi(depfile);
 204         bool had_depfile = fi.exist();
 205         bool run_bibtex = false;
 206         string aux_file = OnlyFilename(ChangeExtension(file, "aux"));
 207
 208         if (had_depfile) {
 209                 lyxerr[Debug::DEPEND] << "Dependency file exists" << endl;
 210                 // Read the dep file:
 211                 had_depfile = head.read(depfile);
 212         }
 213
 214         if (had_depfile) {
 215                 // Update the checksums
 216                 head.update();
 217                 // Can't just check if anything has changed because it might have aborted
 218                 // on error last time... in which cas we need to re-run latex
 219                 // and collect the error messages (even if they are the same).
 220                 if (!FileInfo(output_file).exist()) {
 221                         lyxerr[Debug::DEPEND]
 222                                 << "re-running LaTeX because output file doesn't exist." << endl;
 223                 } else if (!head.sumchange()) {
 224                         lyxerr[Debug::DEPEND] << "return no_change" << endl;
 225                         return NO_CHANGE;
 226                 } else {
 227                         lyxerr[Debug::DEPEND]
 228                                 << "Dependency file has changed" << endl;
 229                 }
 230
 231                 if (head.extchanged(".bib") || head.extchanged(".bst"))
 232                         run_bibtex = true;
 233         } else
 234                 lyxerr[Debug::DEPEND]
 235                         << "Dependency file does not exist, or has wrong format" << endl;
 236
 237         /// We scan the aux file even when had_depfile = false,
 238         /// because we can run pdflatex on the file after running latex on it,
 239         /// in which case we will not need to run bibtex again.
 240         vector<Aux_Info> bibtex_info_old;
 241         if (!run_bibtex)
 242                 bibtex_info_old = scanAuxFiles(aux_file);
 243
 244         ++count;
 245         lyxerr[Debug::LATEX] << "Run #" << count << endl;
 246         message(runMessage(count));
 247
 248         startscript();
 249         scanres = scanLogFile(terr);
 250         if (scanres & ERROR_RERUN) {
 251                 lyxerr[Debug::LATEX] << "Rerunning LaTeX" << endl;
 252                 startscript();
 253                 scanres = scanLogFile(terr);
 254         }
 255
 256         if (scanres & ERRORS) {
 257                 deleteFilesOnError();
 258                 return scanres; // return on error
 259         }
 260
 261         vector<Aux_Info> const bibtex_info = scanAuxFiles(aux_file);
 262         if (!run_bibtex && bibtex_info_old != bibtex_info)
 263                 run_bibtex = true;
 264
 265         // update the dependencies.
 266         deplog(head); // reads the latex log
 267         head.update();
 268
 269         // 0.5
 270         // At this point we must run external programs if needed.
 271         // makeindex will be run if a .idx file changed or was generated.
 272         // And if there were undefined citations or changes in references
 273         // the .aux file is checked for signs of bibtex. Bibtex is then run
 274         // if needed.
 275
 276         // run makeindex
 277         if (head.haschanged(OnlyFilename(ChangeExtension(file, ".idx")))) {
 278                 // no checks for now
 279                 lyxerr[Debug::LATEX] << "Running MakeIndex." << endl;
 280                 message(_("Running MakeIndex."));
 281                 rerun = runMakeIndex(OnlyFilename(ChangeExtension(file, ".idx")));
 282         }
 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." << endl;
 292                 message(_("Running BibTeX."));
 293                 updateBibtexDependencies(head, bibtex_info);
 294                 rerun |= runBibTeX(bibtex_info);
 295         } else if (!had_depfile) {
 296                 /// If we run pdflatex on the file after running latex on it,
 297                 /// then we do not need to run bibtex, but we do need to
 298                 /// insert the .bib and .bst files into the .dep-pdf file.
 299                 updateBibtexDependencies(head, bibtex_info);
 300         }
 301
 302         // 1
 303         // we know on this point that latex has been run once (or we just
 304         // returned) and the question now is to decide if we need to run
 305         // it any more. This is done by asking if any of the files in the
 306         // dependency file has changed. (remember that the checksum for
 307         // a given file is reported to have changed if it just was created)
 308         //     -> if changed or rerun == true:
 309         //             run latex once more and
 310         //             update the dependency structure
 311         //     -> if not changed:
 312         //             we does nothing at this point
 313         //
 314         if (rerun || head.sumchange()) {
 315                 rerun = false;
 316                 ++count;
 317                 lyxerr[Debug::DEPEND]
 318                         << "Dep. file has changed or rerun requested" << endl;
 319                 lyxerr[Debug::LATEX]
 320                         << "Run #" << count << endl;
 321                 message(runMessage(count));
 322                 startscript();
 323                 scanres = scanLogFile(terr);
 324                 if (scanres & ERRORS) {
 325                         deleteFilesOnError();
 326                         return scanres; // return on error
 327                 }
 328
 329                 // update the depedencies
 330                 deplog(head); // reads the latex log
 331                 head.update();
 332         } else {
 333                 lyxerr[Debug::DEPEND] << "Dep. file has NOT changed" << endl;
 334         }
 335
 336         // 1.5
 337         // The inclusion of files generated by external programs like
 338         // makeindex or bibtex might have done changes to pagenumbereing,
 339         // etc. And because of this we must run the external programs
 340         // again to make sure everything is redone correctly.
 341         // Also there should be no need to run the external programs any
 342         // more after this.
 343
 344         // run makeindex if the <file>.idx has changed or was generated.
 345         if (head.haschanged(OnlyFilename(ChangeExtension(file, ".idx")))) {
 346                 // no checks for now
 347                 lyxerr[Debug::LATEX] << "Running MakeIndex." << endl;
 348                 message(_("Running MakeIndex."));
 349                 rerun = runMakeIndex(OnlyFilename(ChangeExtension(file, ".idx")));
 350         }
 351
 352         // 2
 353         // we will only run latex more if the log file asks for it.
 354         // or if the sumchange() is true.
 355         //     -> rerun asked for:
 356         //             run latex and
 357         //             remake the dependency file
 358         //             goto 2 or return if max runs are reached.
 359         //     -> rerun not asked for:
 360         //             just return (fall out of bottom of func)
 361         //
 362         while ((head.sumchange() || rerun || (scanres & RERUN))
 363                && count < MAX_RUN) {
 364                 // Yes rerun until message goes away, or until
 365                 // MAX_RUNS are reached.
 366                 rerun = false;
 367                 ++count;
 368                 lyxerr[Debug::LATEX] << "Run #" << count << endl;
 369                 message(runMessage(count));
 370                 startscript();
 371                 scanres = scanLogFile(terr);
 372                 if (scanres & ERRORS) {
 373                         deleteFilesOnError();
 374                         return scanres; // return on error
 375                 }
 376
 377                 // keep this updated
 378                 head.update();
 379         }
 380
 381         // Write the dependencies to file.
 382         head.write(depfile);
 383         lyxerr[Debug::LATEX] << "Done." << endl;
 384         return scanres;
 385 }
 386
 387
 388 int LaTeX::startscript()
 389 {
 390 #ifndef __EMX__
 391         string tmp = cmd + ' ' + QuoteName(file) + " > /dev/null";
 392 #else // cmd.exe (OS/2) causes SYS0003 error at "/dev/null"
 393         string tmp = cmd + ' ' + file + " > nul";
 394 #endif
 395         Systemcall one;
 396         return one.startscript(Systemcall::Wait, tmp);
 397 }
 398
 399
 400 bool LaTeX::runMakeIndex(string const & f)
 401 {
 402         lyxerr[Debug::LATEX] << "idx file has been made,"
 403                 " running makeindex on file "
 404                              <<  f << endl;
 405
 406         // It should be possible to set the switches for makeindex
 407         // sorting style and such. It would also be very convenient
 408         // to be able to make style files from within LyX. This has
 409         // to come for a later time.
 410         string tmp = "makeindex -c -q ";
 411         tmp += f;
 412         Systemcall one;
 413         one.startscript(Systemcall::Wait, tmp);
 414         return true;
 415 }
 416
 417
 418 vector<Aux_Info> const
 419 LaTeX::scanAuxFiles(string const & file)
 420 {
 421         vector<Aux_Info> result;
 422
 423         result.push_back(scanAuxFile(file));
 424
 425         for (int i = 1; i < 1000; ++i) {
 426                 string file2 = ChangeExtension(file, "") + '.' + tostr(i)
 427                         + ".aux";
 428                 FileInfo fi(file2);
 429                 if (!fi.exist())
 430                         break;
 431                 result.push_back(scanAuxFile(file2));
 432         }
 433         return result;
 434 }
 435
 436
 437 Aux_Info const LaTeX::scanAuxFile(string const & file)
 438 {
 439         Aux_Info result;
 440         result.aux_file = file;
 441         scanAuxFile(file, result);
 442         return result;
 443 }
 444
 445
 446 void LaTeX::scanAuxFile(string const & file, Aux_Info & aux_info)
 447 {
 448         lyxerr[Debug::LATEX] << "Scanning aux file: " << file << endl;
 449
 450         ifstream ifs(file.c_str());
 451         string token;
 452         regex reg1("\\\\citation\\{([^}]+)\\}");
 453         regex reg2("\\\\bibdata\\{([^}]+)\\}");
 454         regex reg3("\\\\bibstyle\\{([^}]+)\\}");
 455         regex reg4("\\\\@input\\{([^}]+)\\}");
 456
 457         while (getline(ifs, token)) {
 458                 token = rtrim(token, "\r");
 459 #ifndef USE_INCLUDED_STRING
 460                 smatch sub;
 461 #else
 462                 cmatch sub;
 463 #endif
 464                 if (regex_match(STRCONV(token), sub, reg1)) {
 465                         string data = STRCONV(sub.str(1));
 466                         while (!data.empty()) {
 467                                 string citation;
 468                                 data = split(data, citation, ',');
 469                                 lyxerr[Debug::LATEX] << "Citation: "
 470                                                      << citation << endl;
 471                                 aux_info.citations.insert(citation);
 472                         }
 473                 } else if (regex_match(STRCONV(token), sub, reg2)) {
 474                         string data = sub.STRCONV(str(1));
 475                         // data is now all the bib files separated by ','
 476                         // get them one by one and pass them to the helper
 477                         while (!data.empty()) {
 478                                 string database;
 479                                 data = split(data, database, ',');
 480                                 database = ChangeExtension(database, "bib");
 481                                 lyxerr[Debug::LATEX] << "BibTeX database: `"
 482                                                      << database << '\'' << endl;
 483                                 aux_info.databases.insert(database);
 484                         }
 485                 } else if (regex_match(STRCONV(token), sub, reg3)) {
 486                         string style = STRCONV(sub.str(1));
 487                         // token is now the style file
 488                         // pass it to the helper
 489                         style = ChangeExtension(style, "bst");
 490                         lyxerr[Debug::LATEX] << "BibTeX style: `"
 491                                              << style << '\'' << endl;
 492                         aux_info.styles.insert(style);
 493                 } else if (regex_match(STRCONV(token), sub, reg4)) {
 494                         string const file2 = STRCONV(sub.str(1));
 495                         scanAuxFile(file2, aux_info);
 496                 }
 497         }
 498 }
 499
 500
 501 void LaTeX::updateBibtexDependencies(DepTable & dep,
 502                                      vector<Aux_Info> const & bibtex_info)
 503 {
 504         // Since a run of Bibtex mandates more latex runs it is ok to
 505         // remove all ".bib" and ".bst" files.
 506         dep.remove_files_with_extension(".bib");
 507         dep.remove_files_with_extension(".bst");
 508         //string aux = OnlyFilename(ChangeExtension(file, ".aux"));
 509
 510         for (vector<Aux_Info>::const_iterator it = bibtex_info.begin();
 511              it != bibtex_info.end(); ++it) {
 512                 for (set<string>::const_iterator it2 = it->databases.begin();
 513                      it2 != it->databases.end(); ++it2) {
 514                         string file = findtexfile(*it2, "bib");
 515                         if (!file.empty())
 516                                 dep.insert(file, true);
 517                 }
 518
 519                 for (set<string>::const_iterator it2 = it->styles.begin();
 520                      it2 != it->styles.end(); ++it2) {
 521                         string file = findtexfile(*it2, "bst");
 522                         if (!file.empty())
 523                                 dep.insert(file, true);
 524                 }
 525         }
 526 }
 527
 528
 529 bool LaTeX::runBibTeX(vector<Aux_Info> const & bibtex_info)
 530 {
 531         bool result = false;
 532         for (vector<Aux_Info>::const_iterator it = bibtex_info.begin();
 533              it != bibtex_info.end(); ++it) {
 534                 if (it->databases.empty())
 535                         continue;
 536                 result = true;
 537
 538                 string tmp = "bibtex ";
 539                 tmp += OnlyFilename(ChangeExtension(it->aux_file, string()));
 540                 Systemcall one;
 541                 one.startscript(Systemcall::Wait, tmp);
 542         }
 543         // Return whether bibtex was run
 544         return result;
 545 }
 546
 547
 548 int LaTeX::scanLogFile(TeXErrors & terr)
 549 {
 550         int last_line = -1;
 551         int line_count = 1;
 552         int retval = NO_ERRORS;
 553         string tmp = OnlyFilename(ChangeExtension(file, ".log"));
 554         lyxerr[Debug::LATEX] << "Log file: " << tmp << endl;
 555         ifstream ifs(tmp.c_str());
 556
 557         string token;
 558         while (getline(ifs, token)) {
 559                 lyxerr[Debug::LATEX] << "Log line: " << token << endl;
 560
 561                 if (token.empty())
 562                         continue;
 563
 564                 if (prefixIs(token, "LaTeX Warning:")) {
 565                         // Here shall we handle different
 566                         // types of warnings
 567                         retval |= LATEX_WARNING;
 568                         lyxerr[Debug::LATEX] << "LaTeX Warning." << endl;
 569                         if (contains(token, "Rerun to get cross-references")) {
 570                                 retval |= RERUN;
 571                                 lyxerr[Debug::LATEX]
 572                                         << "We should rerun." << endl;
 573                         } else if (contains(token, "Citation")
 574                                    && contains(token, "on page")
 575                                    && contains(token, "undefined")) {
 576                                 retval |= UNDEF_CIT;
 577                         }
 578                 } else if (prefixIs(token, "Package")) {
 579                         // Package warnings
 580                         retval |= PACKAGE_WARNING;
 581                         if (contains(token, "natbib Warning:")) {
 582                                 // Natbib warnings
 583                                 if (contains(token, "Citation")
 584                                     && contains(token, "on page")
 585                                     && contains(token, "undefined")) {
 586                                         retval |= UNDEF_CIT;
 587                                 }
 588                         } else if (contains(token, "run BibTeX")) {
 589                                 retval |= UNDEF_CIT;
 590                         } else if (contains(token, "Rerun LaTeX") ||
 591                                    contains(token, "Rerun to get")) {
 592                                 // at least longtable.sty and bibtopic.sty
 593                                 // might use this.
 594                                 lyxerr[Debug::LATEX]
 595                                         << "We should rerun." << endl;
 596                                 retval |= RERUN;
 597                         }
 598                 } else if (token[0] == '(') {
 599                         if (contains(token, "Rerun LaTeX") ||
 600                             contains(token, "Rerun to get")) {
 601                                 // Used by natbib
 602                                 lyxerr[Debug::LATEX]
 603                                         << "We should rerun." << endl;
 604                                 retval |= RERUN;
 605                         }
 606                 } else if (prefixIs(token, "! ")) {
 607                         // Ok, we have something that looks like a TeX Error
 608                         // but what do we really have.
 609
 610                         // Just get the error description:
 611                         string desc(token, 2);
 612                         if (contains(token, "LaTeX Error:"))
 613                                 retval |= LATEX_ERROR;
 614                         // get the next line
 615                         string tmp;
 616                         int count = 0;
 617                         do {
 618                                 if (!getline(ifs, tmp))
 619                                         break;
 620                                 if (++count > 10)
 621                                         break;
 622                         } while (!prefixIs(tmp, "l."));
 623                         if (prefixIs(tmp, "l.")) {
 624                                 // we have a latex error
 625                                 retval |=  TEX_ERROR;
 626                                 if (contains(desc, "Package babel Error: You haven't defined the language"))
 627                                         retval |= ERROR_RERUN;
 628                                 // get the line number:
 629                                 int line = 0;
 630                                 sscanf(tmp.c_str(), "l.%d", &line);
 631                                 // get the rest of the message:
 632                                 string errstr(tmp, tmp.find(' '));
 633                                 errstr += '\n';
 634                                 getline(ifs, tmp);
 635                                 while (!contains(errstr, "l.")
 636                                        && !tmp.empty()
 637                                        && !prefixIs(tmp, "! ")
 638                                        && !contains(tmp, "(job aborted")) {
 639                                         errstr += tmp;
 640                                         errstr += "\n";
 641                                         getline(ifs, tmp);
 642                                 }
 643                                 lyxerr[Debug::LATEX]
 644                                         << "line: " << line << '\n'
 645                                         << "Desc: " << desc << '\n'
 646                                         << "Text: " << errstr << endl;
 647                                 if (line == last_line)
 648                                         ++line_count;
 649                                 else {
 650                                         line_count = 1;
 651                                         last_line = line;
 652                                 }
 653                                 if (line_count <= 5) {
 654                                         terr.insertError(line, desc, errstr);
 655                                         ++num_errors;
 656                                 }
 657                         }
 658                 } else {
 659                         // information messages, TeX warnings and other
 660                         // warnings we have not caught earlier.
 661                         if (prefixIs(token, "Overfull ")) {
 662                                 retval |= TEX_WARNING;
 663                         } else if (prefixIs(token, "Underfull ")) {
 664                                 retval |= TEX_WARNING;
 665                         } else if (contains(token, "Rerun to get citations")) {
 666                                 // Natbib seems to use this.
 667                                 retval |= UNDEF_CIT;
 668                         } else if (contains(token, "No pages of output")) {
 669                                 // A dvi file was not created
 670                                 retval |= NO_OUTPUT;
 671                         } else if (contains(token, "That makes 100 errors")) {
 672                                 // More than 100 errors were reprted
 673                                 retval |= TOO_MANY_ERRORS;
 674                         }
 675                 }
 676         }
 677         lyxerr[Debug::LATEX] << "Log line: " << token << endl;
 678         return retval;
 679 }
 680
 681
 682 void LaTeX::deplog(DepTable & head)
 683 {
 684         // This function reads the LaTeX log file end extracts all the external
 685         // files used by the LaTeX run. The files are then entered into the
 686         // dependency file.
 687
 688         string const logfile = OnlyFilename(ChangeExtension(file, ".log"));
 689
 690         regex reg1("\\)* *\\(([^ )]+).*");
 691         regex reg2("File: ([^ ]+).*");
 692         regex reg3("No file ([^ ]+)\\..*");
 693         regex reg4("\\\\openout[0-9]+.*=.*`([^ ]+)'\\..*");
 694         // If an index should be created, MikTex does not write a line like
 695         //    \openout# = 'sample,idx'.
 696         // but intstead only a line like this into the log:
 697         //   Writing index file sample.idx
 698         regex reg5("Writing index file ([^ ]+).*");
 699         regex unwanted("^.*\\.(aux|log|dvi|bbl|ind|glo)$");
 700
 701         ifstream ifs(logfile.c_str());
 702         while (ifs) {
 703                 // Ok, the scanning of files here is not sufficient.
 704                 // Sometimes files are named by "File: xxx" only
 705                 // So I think we should use some regexps to find files instead.
 706                 // "(\([^ ]+\)"   should match the "(file " variant
 707                 // "File: \([^ ]+\)" should match the "File: file" variant
 708                 string foundfile;
 709                 string token;
 710                 getline(ifs, token);
 711                 token = rtrim(token, "\r");
 712                 if (token.empty()) continue;
 713
 714 #ifndef USE_INCLUDED_STRING
 715                 smatch sub;
 716 #else
 717                 cmatch sub;
 718 #endif
 719                 if (regex_match(STRCONV(token), sub, reg1)) {
 720                         foundfile = STRCONV(sub.str(1));
 721                 } else if (regex_match(STRCONV(token), sub, reg2)) {
 722                         foundfile = STRCONV(sub.str(1));
 723                 } else if (regex_match(STRCONV(token), sub, reg3)) {
 724                         foundfile = STRCONV(sub.str(1));
 725                 } else if (regex_match(STRCONV(token), sub, reg4)) {
 726                         foundfile = STRCONV(sub.str(1));
 727                 } else if (regex_match(STRCONV(token), sub, reg5)) {
 728                         foundfile = STRCONV(sub.str(1));
 729                 } else {
 730                         continue;
 731                 }
 732
 733                 // convert from native os path to unix path
 734                 foundfile = os::internal_path(foundfile);
 735
 736                 lyxerr[Debug::DEPEND] << "Found file: "
 737                                       << foundfile << endl;
 738
 739                 // Ok now we found a file.
 740                 // Now we should make sure that this is a file that we can
 741                 // access through the normal paths.
 742                 // We will not try any fancy search methods to
 743                 // find the file.
 744
 745                 // (1) foundfile is an
 746                 //     absolute path and should
 747                 //     be inserted.
 748                 if (AbsolutePath(foundfile)) {
 749                         lyxerr[Debug::DEPEND] << "AbsolutePath file: "
 750                                               << foundfile << endl;
 751                         // On initial insert we want to do the update at once
 752                         // since this file can not be a file generated by
 753                         // the latex run.
 754                         if (FileInfo(foundfile).exist())
 755                                 head.insert(foundfile, true);
 756                 }
 757
 758                 // (2) foundfile is in the tmpdir
 759                 //     insert it into head
 760                 else if (FileInfo(OnlyFilename(foundfile)).exist()) {
 761                         if (regex_match(STRCONV(foundfile), unwanted)) {
 762                                 lyxerr[Debug::DEPEND]
 763                                         << "We don't want "
 764                                         << OnlyFilename(foundfile)
 765                                         << " in the dep file"
 766                                         << endl;
 767                         } else if (suffixIs(foundfile, ".tex")) {
 768                                 // This is a tex file generated by LyX
 769                                 // and latex is not likely to change this
 770                                 // during its runs.
 771                                 lyxerr[Debug::DEPEND]
 772                                         << "Tmpdir TeX file: "
 773                                         << OnlyFilename(foundfile)
 774                                         << endl;
 775                                 head.insert(foundfile, true);
 776                         } else {
 777                                 lyxerr[Debug::DEPEND]
 778                                         << "In tmpdir file:"
 779                                         << OnlyFilename(foundfile)
 780                                         << endl;
 781                                 head.insert(OnlyFilename(foundfile));
 782                         }
 783                 } else
 784                         lyxerr[Debug::DEPEND]
 785                                 << "Not a file or we are unable to find it."
 786                                 << endl;
 787         }
 788
 789         // Make sure that the main .tex file is in the dependancy file.
 790         head.insert(OnlyFilename(file), true);
 791 }