src/LaTeX.C

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