src/Converter.cpp

   1 /**
   2  * \file Converter.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Dekel Tsur
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "Converter.h"
  14
  15 #include "ConverterCache.h"
  16 #include "Buffer.h"
  17 #include "buffer_funcs.h"
  18 #include "BufferParams.h"
  19 #include "ErrorList.h"
  20 #include "Format.h"
  21 #include "Language.h"
  22 #include "LaTeX.h"
  23 #include "Mover.h"
  24
  25 #include "frontends/alert.h"
  26
  27 #include "support/debug.h"
  28 #include "support/FileNameList.h"
  29 #include "support/filetools.h"
  30 #include "support/FileZipListDir.h"
  31 #include "support/gettext.h"
  32 #include "support/lstrings.h"
  33 #include "support/lyxlib.h"
  34 #include "support/os.h"
  35 #include "support/Package.h"
  36 #include "support/Path.h"
  37 #include "support/Systemcall.h"
  38
  39 using std::find_if;
  40 using std::string;
  41 using std::vector;
  42 using std::distance;
  43
  44
  45 namespace lyx {
  46
  47 using support::addName;
  48 using support::bformat;
  49 using support::changeExtension;
  50 using support::compare_ascii_no_case;
  51 using support::contains;
  52 using support::FileName;
  53 using support::FileNameList;
  54 using support::getExtension;
  55 using support::libFileSearch;
  56 using support::libScriptSearch;
  57 using support::makeAbsPath;
  58 using support::makeRelPath;
  59 using support::onlyFilename;
  60 using support::onlyPath;
  61 using support::package;
  62 using support::prefixIs;
  63 using support::quoteName;
  64 using support::removeExtension;
  65 using support::split;
  66 using support::subst;
  67 using support::Systemcall;
  68
  69 namespace Alert = lyx::frontend::Alert;
  70
  71
  72 namespace {
  73
  74 string const token_from("$$i");
  75 string const token_base("$$b");
  76 string const token_to("$$o");
  77 string const token_path("$$p");
  78
  79
  80
  81 string const add_options(string const & command, string const & options)
  82 {
  83         string head;
  84         string const tail = split(command, head, ' ');
  85         return head + ' ' + options + ' ' + tail;
  86 }
  87
  88
  89 string const dvipdfm_options(BufferParams const & bp)
  90 {
  91         string result;
  92
  93         if (bp.papersize != PAPER_CUSTOM) {
  94                 string const paper_size = bp.paperSizeName();
  95                 if (paper_size != "b5" && paper_size != "foolscap")
  96                         result = "-p "+ paper_size;
  97
  98                 if (bp.orientation == ORIENTATION_LANDSCAPE)
  99                         result += " -l";
 100         }
 101
 102         return result;
 103 }
 104
 105
 106 class ConverterEqual {
 107 public:
 108         ConverterEqual(string const & from, string const & to)
 109                 : from_(from), to_(to) {}
 110         bool operator()(Converter const & c) const {
 111                 return c.from == from_ && c.to == to_;
 112         }
 113 private:
 114         string const from_;
 115         string const to_;
 116 };
 117
 118 } // namespace anon
 119
 120
 121 Converter::Converter(string const & f, string const & t,
 122                      string const & c, string const & l)
 123         : from(f), to(t), command(c), flags(l),
 124           From(0), To(0), latex(false), xml(false),
 125           need_aux(false)
 126 {}
 127
 128
 129 void Converter::readFlags()
 130 {
 131         string flag_list(flags);
 132         while (!flag_list.empty()) {
 133                 string flag_name, flag_value;
 134                 flag_list = split(flag_list, flag_value, ',');
 135                 flag_value = split(flag_value, flag_name, '=');
 136                 if (flag_name == "latex")
 137                         latex = true;
 138                 else if (flag_name == "xml")
 139                         xml = true;
 140                 else if (flag_name == "needaux")
 141                         need_aux = true;
 142                 else if (flag_name == "resultdir")
 143                         result_dir = (flag_value.empty())
 144                                 ? token_base : flag_value;
 145                 else if (flag_name == "resultfile")
 146                         result_file = flag_value;
 147                 else if (flag_name == "parselog")
 148                         parselog = flag_value;
 149         }
 150         if (!result_dir.empty() && result_file.empty())
 151                 result_file = "index." + formats.extension(to);
 152         //if (!contains(command, token_from))
 153         //      latex = true;
 154 }
 155
 156
 157 bool operator<(Converter const & a, Converter const & b)
 158 {
 159         // use the compare_ascii_no_case instead of compare_no_case,
 160         // because in turkish, 'i' is not the lowercase version of 'I',
 161         // and thus turkish locale breaks parsing of tags.
 162         int const i = compare_ascii_no_case(a.From->prettyname(),
 163                                             b.From->prettyname());
 164         if (i == 0)
 165                 return compare_ascii_no_case(a.To->prettyname(),
 166                                              b.To->prettyname()) < 0;
 167         else
 168                 return i < 0;
 169 }
 170
 171
 172 Converter const * Converters::getConverter(string const & from,
 173                                             string const & to) const
 174 {
 175         ConverterList::const_iterator const cit =
 176                 find_if(converterlist_.begin(), converterlist_.end(),
 177                         ConverterEqual(from, to));
 178         if (cit != converterlist_.end())
 179                 return &(*cit);
 180         else
 181                 return 0;
 182 }
 183
 184
 185 int Converters::getNumber(string const & from, string const & to) const
 186 {
 187         ConverterList::const_iterator const cit =
 188                 find_if(converterlist_.begin(), converterlist_.end(),
 189                         ConverterEqual(from, to));
 190         if (cit != converterlist_.end())
 191                 return distance(converterlist_.begin(), cit);
 192         else
 193                 return -1;
 194 }
 195
 196
 197 void Converters::add(string const & from, string const & to,
 198                      string const & command, string const & flags)
 199 {
 200         formats.add(from);
 201         formats.add(to);
 202         ConverterList::iterator it = find_if(converterlist_.begin(),
 203                                              converterlist_.end(),
 204                                              ConverterEqual(from , to));
 205
 206         Converter converter(from, to, command, flags);
 207         if (it != converterlist_.end() && !flags.empty() && flags[0] == '*') {
 208                 converter = *it;
 209                 converter.command = command;
 210                 converter.flags = flags;
 211         }
 212         converter.readFlags();
 213
 214         if (converter.latex && (latex_command_.empty() || to == "dvi"))
 215                 latex_command_ = subst(command, token_from, "");
 216         // If we have both latex & pdflatex, we set latex_command to latex.
 217         // The latex_command is used to update the .aux file when running
 218         // a converter that uses it.
 219
 220         if (it == converterlist_.end()) {
 221                 converterlist_.push_back(converter);
 222         } else {
 223                 converter.From = it->From;
 224                 converter.To = it->To;
 225                 *it = converter;
 226         }
 227 }
 228
 229
 230 void Converters::erase(string const & from, string const & to)
 231 {
 232         ConverterList::iterator const it =
 233                 find_if(converterlist_.begin(),
 234                         converterlist_.end(),
 235                         ConverterEqual(from, to));
 236         if (it != converterlist_.end())
 237                 converterlist_.erase(it);
 238 }
 239
 240
 241 // This method updates the pointers From and To in all the converters.
 242 // The code is not very efficient, but it doesn't matter as the number
 243 // of formats and converters is small.
 244 // Furthermore, this method is called only on startup, or after
 245 // adding/deleting a format in FormPreferences (the latter calls can be
 246 // eliminated if the formats in the Formats class are stored using a map or
 247 // a list (instead of a vector), but this will cause other problems).
 248 void Converters::update(Formats const & formats)
 249 {
 250         ConverterList::iterator it = converterlist_.begin();
 251         ConverterList::iterator end = converterlist_.end();
 252         for (; it != end; ++it) {
 253                 it->From = formats.getFormat(it->from);
 254                 it->To = formats.getFormat(it->to);
 255         }
 256 }
 257
 258
 259 // This method updates the pointers From and To in the last converter.
 260 // It is called when adding a new converter in FormPreferences
 261 void Converters::updateLast(Formats const & formats)
 262 {
 263         if (converterlist_.begin() != converterlist_.end()) {
 264                 ConverterList::iterator it = converterlist_.end() - 1;
 265                 it->From = formats.getFormat(it->from);
 266                 it->To = formats.getFormat(it->to);
 267         }
 268 }
 269
 270
 271 void Converters::sort()
 272 {
 273         std::sort(converterlist_.begin(), converterlist_.end());
 274 }
 275
 276
 277 OutputParams::FLAVOR Converters::getFlavor(Graph::EdgePath const & path)
 278 {
 279         for (Graph::EdgePath::const_iterator cit = path.begin();
 280              cit != path.end(); ++cit) {
 281                 Converter const & conv = converterlist_[*cit];
 282                 if (conv.latex)
 283                         if (contains(conv.to, "pdf"))
 284                                 return OutputParams::PDFLATEX;
 285                 if (conv.xml)
 286                         return OutputParams::XML;
 287         }
 288         return OutputParams::LATEX;
 289 }
 290
 291
 292 bool Converters::convert(Buffer const * buffer,
 293                          FileName const & from_file, FileName const & to_file,
 294                          FileName const & orig_from,
 295                          string const & from_format, string const & to_format,
 296                          ErrorList & errorList, int conversionflags)
 297 {
 298         if (from_format == to_format)
 299                 return move(from_format, from_file, to_file, false);
 300
 301         if ((conversionflags & try_cache) &&
 302             ConverterCache::get().inCache(orig_from, to_format))
 303                 return ConverterCache::get().copy(orig_from, to_format, to_file);
 304
 305         Graph::EdgePath edgepath = getPath(from_format, to_format);
 306         if (edgepath.empty()) {
 307                 if (conversionflags & try_default) {
 308                         // if no special converter defined, then we take the
 309                         // default one from ImageMagic.
 310                         string const from_ext = from_format.empty() ?
 311                                 getExtension(from_file.absFilename()) :
 312                                 formats.extension(from_format);
 313                         string const to_ext = formats.extension(to_format);
 314                         string const command =
 315                                 support::os::python() + ' ' +
 316                                 quoteName(libFileSearch("scripts", "convertDefault.py").toFilesystemEncoding()) +
 317                                 ' ' +
 318                                 quoteName(from_ext + ':' + from_file.toFilesystemEncoding()) +
 319                                 ' ' +
 320                                 quoteName(to_ext + ':' + to_file.toFilesystemEncoding());
 321                         LYXERR(Debug::FILES, "No converter defined! "
 322                                    "I use convertDefault.py:\n\t" << command);
 323                         Systemcall one;
 324                         one.startscript(Systemcall::Wait, command);
 325                         if (to_file.isReadableFile()) {
 326                                 if (conversionflags & try_cache)
 327                                         ConverterCache::get().add(orig_from,
 328                                                         to_format, to_file);
 329                                 return true;
 330                         }
 331                 }
 332                 Alert::error(_("Cannot convert file"),
 333                              bformat(_("No information for converting %1$s "
 334                                                     "format files to %2$s.\n"
 335                                                     "Define a converter in the preferences."),
 336                                                         from_ascii(from_format), from_ascii(to_format)));
 337                 return false;
 338         }
 339
 340         // buffer is only invalid for importing, and then runparams is not
 341         // used anyway.
 342         OutputParams runparams(buffer ? &buffer->params().encoding() : 0);
 343         runparams.flavor = getFlavor(edgepath);
 344
 345         // Some converters (e.g. lilypond) can only output files to the
 346         // current directory, so we need to change the current directory.
 347         // This has the added benefit that all other files that may be
 348         // generated by the converter are deleted when LyX closes and do not
 349         // clutter the real working directory.
 350         string const path(onlyPath(from_file.absFilename()));
 351         // Prevent the compiler from optimizing away p
 352         FileName pp(path);
 353         support::PathChanger p(pp);
 354
 355         // empty the error list before any new conversion takes place.
 356         errorList.clear();
 357
 358         bool run_latex = false;
 359         string from_base = changeExtension(from_file.absFilename(), "");
 360         string to_base = changeExtension(to_file.absFilename(), "");
 361         FileName infile;
 362         FileName outfile = from_file;
 363         for (Graph::EdgePath::const_iterator cit = edgepath.begin();
 364              cit != edgepath.end(); ++cit) {
 365                 Converter const & conv = converterlist_[*cit];
 366                 bool dummy = conv.To->dummy() && conv.to != "program";
 367                 if (!dummy) {
 368                         LYXERR(Debug::FILES, "Converting from  "
 369                                << conv.from << " to " << conv.to);
 370                 }
 371                 infile = outfile;
 372                 outfile = FileName(conv.result_dir.empty()
 373                         ? changeExtension(from_file.absFilename(), conv.To->extension())
 374                         : addName(subst(conv.result_dir,
 375                                         token_base, from_base),
 376                                   subst(conv.result_file,
 377                                         token_base, onlyFilename(from_base))));
 378
 379                 // if input and output files are equal, we use a
 380                 // temporary file as intermediary (JMarc)
 381                 FileName real_outfile;
 382                 if (outfile == infile) {
 383                         real_outfile = infile;
 384                         // when importing, a buffer does not necessarily exist
 385                         if (buffer)
 386                                 outfile = FileName(addName(buffer->temppath(), "tmpfile.out"));
 387                         else
 388                                 outfile = FileName(addName(package().temp_dir().absFilename(),
 389                                                    "tmpfile.out"));
 390                 }
 391
 392                 if (conv.latex) {
 393                         run_latex = true;
 394                         string const command = subst(conv.command, token_from, "");
 395                         LYXERR(Debug::FILES, "Running " << command);
 396                         if (!runLaTeX(*buffer, command, runparams, errorList))
 397                                 return false;
 398                 } else {
 399                         if (conv.need_aux && !run_latex
 400                             && !latex_command_.empty()) {
 401                                 LYXERR(Debug::FILES, "Running " << latex_command_
 402                                         << " to update aux file");
 403                                 runLaTeX(*buffer, latex_command_, runparams, errorList);
 404                         }
 405
 406                         // FIXME UNICODE
 407                         string const infile2 =
 408                                 to_utf8(makeRelPath(from_utf8(infile.absFilename()), from_utf8(path)));
 409                         string const outfile2 =
 410                                 to_utf8(makeRelPath(from_utf8(outfile.absFilename()), from_utf8(path)));
 411
 412                         string command = conv.command;
 413                         command = subst(command, token_from, quoteName(infile2));
 414                         command = subst(command, token_base, quoteName(from_base));
 415                         command = subst(command, token_to, quoteName(outfile2));
 416                         command = libScriptSearch(command);
 417
 418                         if (!conv.parselog.empty())
 419                                 command += " 2> " + quoteName(infile2 + ".out");
 420
 421                         if (conv.from == "dvi" && conv.to == "ps")
 422                                 command = add_options(command,
 423                                                       buffer->params().dvips_options());
 424                         else if (conv.from == "dvi" && prefixIs(conv.to, "pdf"))
 425                                 command = add_options(command,
 426                                                       dvipdfm_options(buffer->params()));
 427
 428                         LYXERR(Debug::FILES, "Calling " << command);
 429                         if (buffer)
 430                                 buffer->message(_("Executing command: ")
 431                                 + from_utf8(command));
 432
 433                         Systemcall one;
 434                         int res;
 435                         if (dummy) {
 436                                 res = one.startscript(Systemcall::DontWait,
 437                                         to_filesystem8bit(from_utf8(command)));
 438                                 // We're not waiting for the result, so we can't do anything
 439                                 // else here.
 440                         } else {
 441                                 res = one.startscript(Systemcall::Wait,
 442                                                 to_filesystem8bit(from_utf8(command)));
 443                                 if (!real_outfile.empty()) {
 444                                         Mover const & mover = getMover(conv.to);
 445                                         if (!mover.rename(outfile, real_outfile))
 446                                                 res = -1;
 447                                         else
 448                                                 LYXERR(Debug::FILES, "renaming file " << outfile
 449                                                         << " to " << real_outfile);
 450                                         // Finally, don't forget to tell any future
 451                                         // converters to use the renamed file...
 452                                         outfile = real_outfile;
 453                                 }
 454
 455                                 if (!conv.parselog.empty()) {
 456                                         string const logfile =  infile2 + ".log";
 457                                         string const script = libScriptSearch(conv.parselog);
 458                                         string const command2 = script +
 459                                                 " < " + quoteName(infile2 + ".out") +
 460                                                 " > " + quoteName(logfile);
 461                                         one.startscript(Systemcall::Wait,
 462                                                 to_filesystem8bit(from_utf8(command2)));
 463                                         if (!scanLog(*buffer, command, makeAbsPath(logfile, path), errorList))
 464                                                 return false;
 465                                 }
 466                         }
 467
 468                         if (res) {
 469                                 if (conv.to == "program") {
 470                                         Alert::error(_("Build errors"),
 471                                                 _("There were errors during the build process."));
 472                                 } else {
 473 // FIXME: this should go out of here. For example, here we cannot say if
 474 // it is a document (.lyx) or something else. Same goes for elsewhere.
 475                                         Alert::error(_("Cannot convert file"),
 476                                                 bformat(_("An error occurred whilst running %1$s"),
 477                                                 from_utf8(command.substr(0, 50))));
 478                                 }
 479                                 return false;
 480                         }
 481                 }
 482         }
 483
 484         Converter const & conv = converterlist_[edgepath.back()];
 485         if (conv.To->dummy())
 486                 return true;
 487
 488         if (!conv.result_dir.empty()) {
 489                 // The converter has put the file(s) in a directory.
 490                 // In this case we ignore the given to_file.
 491                 if (from_base != to_base) {
 492                         string const from = subst(conv.result_dir,
 493                                             token_base, from_base);
 494                         string const to = subst(conv.result_dir,
 495                                           token_base, to_base);
 496                         Mover const & mover = getMover(conv.from);
 497                         if (!mover.rename(FileName(from), FileName(to))) {
 498                                 Alert::error(_("Cannot convert file"),
 499                                         bformat(_("Could not move a temporary directory from %1$s to %2$s."),
 500                                                 from_utf8(from), from_utf8(to)));
 501                                 return false;
 502                         }
 503                 }
 504                 return true;
 505         } else {
 506                 if (conversionflags & try_cache)
 507                         ConverterCache::get().add(orig_from, to_format, outfile);
 508                 return move(conv.to, outfile, to_file, conv.latex);
 509         }
 510 }
 511
 512
 513 bool Converters::move(string const & fmt,
 514                       FileName const & from, FileName const & to, bool copy)
 515 {
 516         if (from == to)
 517                 return true;
 518
 519         bool no_errors = true;
 520         string const path = onlyPath(from.absFilename());
 521         string const base = onlyFilename(removeExtension(from.absFilename()));
 522         string const to_base = removeExtension(to.absFilename());
 523         string const to_extension = getExtension(to.absFilename());
 524
 525         FileNameList const files = FileName(path).dirList(getExtension(from.absFilename()));
 526         for (FileNameList::const_iterator it = files.begin();
 527              it != files.end(); ++it) {
 528                 string const from2 = it->absFilename();
 529                 string const file2 = onlyFilename(from2);
 530                 if (prefixIs(file2, base)) {
 531                         string const to2 = changeExtension(
 532                                 to_base + file2.substr(base.length()),
 533                                 to_extension);
 534                         LYXERR(Debug::FILES, "moving " << from2 << " to " << to2);
 535
 536                         Mover const & mover = getMover(fmt);
 537                         bool const moved = copy
 538                                 ? mover.copy(*it, FileName(to2))
 539                                 : mover.rename(*it, FileName(to2));
 540                         if (!moved && no_errors) {
 541                                 Alert::error(_("Cannot convert file"),
 542                                         bformat(copy ?
 543                                                 _("Could not copy a temporary file from %1$s to %2$s.") :
 544                                                 _("Could not move a temporary file from %1$s to %2$s."),
 545                                                 from_utf8(from2), from_utf8(to2)));
 546                                 no_errors = false;
 547                         }
 548                 }
 549         }
 550         return no_errors;
 551 }
 552
 553
 554 bool Converters::formatIsUsed(string const & format)
 555 {
 556         ConverterList::const_iterator cit = converterlist_.begin();
 557         ConverterList::const_iterator end = converterlist_.end();
 558         for (; cit != end; ++cit) {
 559                 if (cit->from == format || cit->to == format)
 560                         return true;
 561         }
 562         return false;
 563 }
 564
 565
 566 bool Converters::scanLog(Buffer const & buffer, string const & /*command*/,
 567                          FileName const & filename, ErrorList & errorList)
 568 {
 569         OutputParams runparams(0);
 570         runparams.flavor = OutputParams::LATEX;
 571         LaTeX latex("", runparams, filename);
 572         TeXErrors terr;
 573         int const result = latex.scanLogFile(terr);
 574
 575         if (result & LaTeX::ERRORS)
 576                 buffer.bufferErrors(terr, errorList);
 577
 578         return true;
 579 }
 580
 581
 582 namespace {
 583
 584 class ShowMessage
 585         : public boost::signals::trackable {
 586 public:
 587         ShowMessage(Buffer const & b) : buffer_(b) {}
 588         void operator()(docstring const & msg) const { buffer_.message(msg); }
 589 private:
 590         Buffer const & buffer_;
 591 };
 592
 593 }
 594
 595
 596 bool Converters::runLaTeX(Buffer const & buffer, string const & command,
 597                           OutputParams const & runparams, ErrorList & errorList)
 598 {
 599         buffer.setBusy(true);
 600         buffer.message(_("Running LaTeX..."));
 601
 602         runparams.document_language = buffer.params().language->babel();
 603
 604         // do the LaTeX run(s)
 605         string const name = buffer.latexName();
 606         LaTeX latex(command, runparams, FileName(makeAbsPath(name)));
 607         TeXErrors terr;
 608         ShowMessage show(buffer);
 609         latex.message.connect(show);
 610         int const result = latex.run(terr);
 611
 612         if (result & LaTeX::ERRORS)
 613                 buffer.bufferErrors(terr, errorList);
 614
 615         // check return value from latex.run().
 616         if ((result & LaTeX::NO_LOGFILE)) {
 617                 docstring const str =
 618                         bformat(_("LaTeX did not run successfully. "
 619                                                "Additionally, LyX could not locate "
 620                                                "the LaTeX log %1$s."), from_utf8(name));
 621                 Alert::error(_("LaTeX failed"), str);
 622         } else if (result & LaTeX::NO_OUTPUT) {
 623                 Alert::warning(_("Output is empty"),
 624                                _("An empty output file was generated."));
 625         }
 626
 627
 628         buffer.setBusy(false);
 629
 630         int const ERROR_MASK =
 631                         LaTeX::NO_LOGFILE |
 632                         LaTeX::ERRORS |
 633                         LaTeX::NO_OUTPUT;
 634
 635         return (result & ERROR_MASK) == 0;
 636
 637 }
 638
 639
 640
 641 void Converters::buildGraph()
 642 {
 643         G_.init(formats.size());
 644         ConverterList::iterator beg = converterlist_.begin();
 645         ConverterList::iterator const end = converterlist_.end();
 646         for (ConverterList::iterator it = beg; it != end ; ++it) {
 647                 int const s = formats.getNumber(it->from);
 648                 int const t = formats.getNumber(it->to);
 649                 G_.addEdge(s,t);
 650         }
 651 }
 652
 653
 654 std::vector<Format const *> const
 655 Converters::intToFormat(std::vector<int> const & input)
 656 {
 657         vector<Format const *> result(input.size());
 658
 659         vector<int>::const_iterator it = input.begin();
 660         vector<int>::const_iterator const end = input.end();
 661         vector<Format const *>::iterator rit = result.begin();
 662         for ( ; it != end; ++it, ++rit) {
 663                 *rit = &formats.get(*it);
 664         }
 665         return result;
 666 }
 667
 668
 669 vector<Format const *> const
 670 Converters::getReachableTo(string const & target, bool const clear_visited)
 671 {
 672         vector<int> const & reachablesto =
 673                 G_.getReachableTo(formats.getNumber(target), clear_visited);
 674
 675         return intToFormat(reachablesto);
 676 }
 677
 678
 679 vector<Format const *> const
 680 Converters::getReachable(string const & from, bool const only_viewable,
 681                          bool const clear_visited)
 682 {
 683         vector<int> const & reachables =
 684                 G_.getReachable(formats.getNumber(from),
 685                                 only_viewable,
 686                                 clear_visited);
 687
 688         return intToFormat(reachables);
 689 }
 690
 691
 692 bool Converters::isReachable(string const & from, string const & to)
 693 {
 694         return G_.isReachable(formats.getNumber(from),
 695                               formats.getNumber(to));
 696 }
 697
 698
 699 Graph::EdgePath Converters::getPath(string const & from, string const & to)
 700 {
 701         return G_.getPath(formats.getNumber(from),
 702                           formats.getNumber(to));
 703 }
 704
 705
 706 vector<Format const *> Converters::importableFormats()
 707 {
 708         vector<string> l = loaders();
 709         vector<Format const *> result = getReachableTo(l[0], true);
 710         for (vector<string>::const_iterator it = l.begin() + 1;
 711              it != l.end(); ++it) {
 712                 vector<Format const *> r = getReachableTo(*it, false);
 713                 result.insert(result.end(), r.begin(), r.end());
 714         }
 715         return result;
 716 }
 717
 718
 719 vector<string> Converters::loaders() const
 720 {
 721         vector<string> v;
 722         v.push_back("lyx");
 723         v.push_back("text");
 724         v.push_back("textparagraph");
 725         return v;
 726 }
 727
 728
 729 } // namespace lyx