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