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 "Buffer.h"
  16 #include "buffer_funcs.h"
  17 #include "BufferParams.h"
  18 #include "ConverterCache.h"
  19 #include "Encoding.h"
  20 #include "ErrorList.h"
  21 #include "Format.h"
  22 #include "Language.h"
  23 #include "LaTeX.h"
  24 #include "Mover.h"
  25
  26 #include "frontends/alert.h"
  27
  28 #include "support/debug.h"
  29 #include "support/FileNameList.h"
  30 #include "support/filetools.h"
  31 #include "support/gettext.h"
  32 #include "support/lstrings.h"
  33 #include "support/os.h"
  34 #include "support/Package.h"
  35 #include "support/Path.h"
  36 #include "support/Systemcall.h"
  37
  38 using namespace std;
  39 using namespace lyx::support;
  40
  41 namespace lyx {
  42
  43 namespace Alert = lyx::frontend::Alert;
  44
  45
  46 namespace {
  47
  48 string const token_from("$$i");
  49 string const token_base("$$b");
  50 string const token_to("$$o");
  51 string const token_path("$$p");
  52 string const token_orig_path("$$r");
  53 string const token_encoding("$$e");
  54
  55
  56 string const add_options(string const & command, string const & options)
  57 {
  58         string head;
  59         string const tail = split(command, head, ' ');
  60         return head + ' ' + options + ' ' + tail;
  61 }
  62
  63
  64 string const dvipdfm_options(BufferParams const & bp)
  65 {
  66         string result;
  67
  68         if (bp.papersize != PAPER_CUSTOM) {
  69                 string const paper_size = bp.paperSizeName(BufferParams::DVIPDFM);
  70                 if (!paper_size.empty())
  71                         result = "-p "+ paper_size;
  72
  73                 if (bp.orientation == ORIENTATION_LANDSCAPE)
  74                         result += " -l";
  75         }
  76
  77         return result;
  78 }
  79
  80
  81 class ConverterEqual {
  82 public:
  83         ConverterEqual(string const & from, string const & to)
  84                 : from_(from), to_(to) {}
  85         bool operator()(Converter const & c) const {
  86                 return c.from == from_ && c.to == to_;
  87         }
  88 private:
  89         string const from_;
  90         string const to_;
  91 };
  92
  93 } // namespace anon
  94
  95
  96 Converter::Converter(string const & f, string const & t,
  97                      string const & c, string const & l)
  98         : from(f), to(t), command(c), flags(l),
  99           From(0), To(0), latex(false), xml(false),
 100           need_aux(false)
 101 {}
 102
 103
 104 void Converter::readFlags()
 105 {
 106         string flag_list(flags);
 107         while (!flag_list.empty()) {
 108                 string flag_name, flag_value;
 109                 flag_list = split(flag_list, flag_value, ',');
 110                 flag_value = split(flag_value, flag_name, '=');
 111                 if (flag_name == "latex")
 112                         latex = true;
 113                 else if (flag_name == "xml")
 114                         xml = true;
 115                 else if (flag_name == "needaux")
 116                         need_aux = true;
 117                 else if (flag_name == "resultdir")
 118                         result_dir = (flag_value.empty())
 119                                 ? token_base : flag_value;
 120                 else if (flag_name == "resultfile")
 121                         result_file = flag_value;
 122                 else if (flag_name == "parselog")
 123                         parselog = flag_value;
 124         }
 125         if (!result_dir.empty() && result_file.empty())
 126                 result_file = "index." + formats.extension(to);
 127         //if (!contains(command, token_from))
 128         //      latex = true;
 129 }
 130
 131
 132 bool operator<(Converter const & a, Converter const & b)
 133 {
 134         // use the compare_ascii_no_case instead of compare_no_case,
 135         // because in turkish, 'i' is not the lowercase version of 'I',
 136         // and thus turkish locale breaks parsing of tags.
 137         int const i = compare_ascii_no_case(a.From->prettyname(),
 138                                             b.From->prettyname());
 139         if (i == 0)
 140                 return compare_ascii_no_case(a.To->prettyname(),
 141                                              b.To->prettyname()) < 0;
 142         else
 143                 return i < 0;
 144 }
 145
 146
 147 Converter const * Converters::getConverter(string const & from,
 148                                             string const & to) const
 149 {
 150         ConverterList::const_iterator const cit =
 151                 find_if(converterlist_.begin(), converterlist_.end(),
 152                         ConverterEqual(from, to));
 153         if (cit != converterlist_.end())
 154                 return &(*cit);
 155         else
 156                 return 0;
 157 }
 158
 159
 160 int Converters::getNumber(string const & from, string const & to) const
 161 {
 162         ConverterList::const_iterator const cit =
 163                 find_if(converterlist_.begin(), converterlist_.end(),
 164                         ConverterEqual(from, to));
 165         if (cit != converterlist_.end())
 166                 return distance(converterlist_.begin(), cit);
 167         else
 168                 return -1;
 169 }
 170
 171
 172 void Converters::add(string const & from, string const & to,
 173                      string const & command, string const & flags)
 174 {
 175         formats.add(from);
 176         formats.add(to);
 177         ConverterList::iterator it = find_if(converterlist_.begin(),
 178                                              converterlist_.end(),
 179                                              ConverterEqual(from , to));
 180
 181         Converter converter(from, to, command, flags);
 182         if (it != converterlist_.end() && !flags.empty() && flags[0] == '*') {
 183                 converter = *it;
 184                 converter.command = command;
 185                 converter.flags = flags;
 186         }
 187         converter.readFlags();
 188
 189         if (converter.latex && (latex_command_.empty() || to == "dvi"))
 190                 latex_command_ = subst(command, token_from, "");
 191         // If we have both latex & pdflatex, we set latex_command to latex.
 192         // The latex_command is used to update the .aux file when running
 193         // a converter that uses it.
 194
 195         if (it == converterlist_.end()) {
 196                 converterlist_.push_back(converter);
 197         } else {
 198                 converter.From = it->From;
 199                 converter.To = it->To;
 200                 *it = converter;
 201         }
 202 }
 203
 204
 205 void Converters::erase(string const & from, string const & to)
 206 {
 207         ConverterList::iterator const it =
 208                 find_if(converterlist_.begin(),
 209                         converterlist_.end(),
 210                         ConverterEqual(from, to));
 211         if (it != converterlist_.end())
 212                 converterlist_.erase(it);
 213 }
 214
 215
 216 // This method updates the pointers From and To in all the converters.
 217 // The code is not very efficient, but it doesn't matter as the number
 218 // of formats and converters is small.
 219 // Furthermore, this method is called only on startup, or after
 220 // adding/deleting a format in FormPreferences (the latter calls can be
 221 // eliminated if the formats in the Formats class are stored using a map or
 222 // a list (instead of a vector), but this will cause other problems).
 223 void Converters::update(Formats const & formats)
 224 {
 225         ConverterList::iterator it = converterlist_.begin();
 226         ConverterList::iterator end = converterlist_.end();
 227         for (; it != end; ++it) {
 228                 it->From = formats.getFormat(it->from);
 229                 it->To = formats.getFormat(it->to);
 230         }
 231 }
 232
 233
 234 // This method updates the pointers From and To in the last converter.
 235 // It is called when adding a new converter in FormPreferences
 236 void Converters::updateLast(Formats const & formats)
 237 {
 238         if (converterlist_.begin() != converterlist_.end()) {
 239                 ConverterList::iterator it = converterlist_.end() - 1;
 240                 it->From = formats.getFormat(it->from);
 241                 it->To = formats.getFormat(it->to);
 242         }
 243 }
 244
 245
 246 void Converters::sort()
 247 {
 248         std::sort(converterlist_.begin(), converterlist_.end());
 249 }
 250
 251
 252 OutputParams::FLAVOR Converters::getFlavor(Graph::EdgePath const & path)
 253 {
 254         for (Graph::EdgePath::const_iterator cit = path.begin();
 255              cit != path.end(); ++cit) {
 256                 Converter const & conv = converterlist_[*cit];
 257                 if (conv.latex)
 258                         if (contains(conv.from, "xetex"))
 259                                 return OutputParams::XETEX;
 260                         if (contains(conv.to, "pdf"))
 261                                 return OutputParams::PDFLATEX;
 262                 if (conv.xml)
 263                         return OutputParams::XML;
 264         }
 265         return OutputParams::LATEX;
 266 }
 267
 268
 269 bool Converters::convert(Buffer const * buffer,
 270                          FileName const & from_file, FileName const & to_file,
 271                          FileName const & orig_from,
 272                          string const & from_format, string const & to_format,
 273                          ErrorList & errorList, int conversionflags)
 274 {
 275         if (from_format == to_format)
 276                 return move(from_format, from_file, to_file, false);
 277
 278         if ((conversionflags & try_cache) &&
 279             ConverterCache::get().inCache(orig_from, to_format))
 280                 return ConverterCache::get().copy(orig_from, to_format, to_file);
 281
 282         Graph::EdgePath edgepath = getPath(from_format, to_format);
 283         if (edgepath.empty()) {
 284                 if (conversionflags & try_default) {
 285                         // if no special converter defined, then we take the
 286                         // default one from ImageMagic.
 287                         string const from_ext = from_format.empty() ?
 288                                 getExtension(from_file.absFileName()) :
 289                                 formats.extension(from_format);
 290                         string const to_ext = formats.extension(to_format);
 291                         string const command =
 292                                 os::python() + ' ' +
 293                                 quoteName(libFileSearch("scripts", "convertDefault.py").toFilesystemEncoding()) +
 294                                 ' ' +
 295                                 quoteName(from_ext + ':' + from_file.toFilesystemEncoding()) +
 296                                 ' ' +
 297                                 quoteName(to_ext + ':' + to_file.toFilesystemEncoding());
 298                         LYXERR(Debug::FILES, "No converter defined! "
 299                                    "I use convertDefault.py:\n\t" << command);
 300                         Systemcall one;
 301                         one.startscript(Systemcall::Wait, command);
 302                         if (to_file.isReadableFile()) {
 303                                 if (conversionflags & try_cache)
 304                                         ConverterCache::get().add(orig_from,
 305                                                         to_format, to_file);
 306                                 return true;
 307                         }
 308                 }
 309
 310                 // only warn once per session and per file type
 311                 static std::map<string, string> warned;
 312                 if (warned.find(from_format) != warned.end() && warned.find(from_format)->second == to_format) {
 313                         return false;
 314                 }
 315                 warned.insert(make_pair(from_format, to_format));
 316
 317                 Alert::error(_("Cannot convert file"),
 318                              bformat(_("No information for converting %1$s "
 319                                                     "format files to %2$s.\n"
 320                                                     "Define a converter in the preferences."),
 321                                                         from_ascii(from_format), from_ascii(to_format)));
 322                 return false;
 323         }
 324
 325         // buffer is only invalid for importing, and then runparams is not
 326         // used anyway.
 327         OutputParams runparams(buffer ? &buffer->params().encoding() : 0);
 328         runparams.flavor = getFlavor(edgepath);
 329
 330         if (buffer) {
 331                 runparams.use_japanese = buffer->bufferFormat() == "platex";
 332                 runparams.use_indices = buffer->params().use_indices;
 333                 runparams.bibtex_command = (buffer->params().bibtex_command == "default") ?
 334                         string() : buffer->params().bibtex_command;
 335                 runparams.index_command = (buffer->params().index_command == "default") ?
 336                         string() : buffer->params().index_command;
 337         }
 338
 339         // Some converters (e.g. lilypond) can only output files to the
 340         // current directory, so we need to change the current directory.
 341         // This has the added benefit that all other files that may be
 342         // generated by the converter are deleted when LyX closes and do not
 343         // clutter the real working directory.
 344         string const path(onlyPath(from_file.absFileName()));
 345         // Prevent the compiler from optimizing away p
 346         FileName pp(path);
 347         PathChanger p(pp);
 348
 349         // empty the error list before any new conversion takes place.
 350         errorList.clear();
 351
 352         bool run_latex = false;
 353         string from_base = changeExtension(from_file.absFileName(), "");
 354         string to_base = changeExtension(to_file.absFileName(), "");
 355         FileName infile;
 356         FileName outfile = from_file;
 357         for (Graph::EdgePath::const_iterator cit = edgepath.begin();
 358              cit != edgepath.end(); ++cit) {
 359                 Converter const & conv = converterlist_[*cit];
 360                 bool dummy = conv.To->dummy() && conv.to != "program";
 361                 if (!dummy) {
 362                         LYXERR(Debug::FILES, "Converting from  "
 363                                << conv.from << " to " << conv.to);
 364                 }
 365                 infile = outfile;
 366                 outfile = FileName(conv.result_dir.empty()
 367                         ? changeExtension(from_file.absFileName(), conv.To->extension())
 368                         : addName(subst(conv.result_dir,
 369                                         token_base, from_base),
 370                                   subst(conv.result_file,
 371                                         token_base, onlyFileName(from_base))));
 372
 373                 // if input and output files are equal, we use a
 374                 // temporary file as intermediary (JMarc)
 375                 FileName real_outfile;
 376                 if (outfile == infile) {
 377                         real_outfile = infile;
 378                         // when importing, a buffer does not necessarily exist
 379                         if (buffer)
 380                                 outfile = FileName(addName(buffer->temppath(), "tmpfile.out"));
 381                         else
 382                                 outfile = FileName(addName(package().temp_dir().absFileName(),
 383                                                    "tmpfile.out"));
 384                 }
 385
 386                 if (conv.latex) {
 387                         run_latex = true;
 388                         string const command = subst(conv.command, token_from, "");
 389                         LYXERR(Debug::FILES, "Running " << command);
 390                         if (!runLaTeX(*buffer, command, runparams, errorList))
 391                                 return false;
 392                 } else {
 393                         if (conv.need_aux && !run_latex
 394                             && !latex_command_.empty()) {
 395                                 LYXERR(Debug::FILES, "Running " << latex_command_
 396                                         << " to update aux file");
 397                                 runLaTeX(*buffer, latex_command_, runparams, errorList);
 398                         }
 399
 400                         // FIXME UNICODE
 401                         string const infile2 =
 402                                 to_utf8(makeRelPath(from_utf8(infile.absFileName()), from_utf8(path)));
 403                         string const outfile2 =
 404                                 to_utf8(makeRelPath(from_utf8(outfile.absFileName()), from_utf8(path)));
 405
 406                         string command = conv.command;
 407                         command = subst(command, token_from, quoteName(infile2));
 408                         command = subst(command, token_base, quoteName(from_base));
 409                         command = subst(command, token_to, quoteName(outfile2));
 410                         command = subst(command, token_path, quoteName(infile.onlyPath().absFileName()));
 411                         command = subst(command, token_orig_path, quoteName(orig_from.onlyPath().absFileName()));
 412                         command = subst(command, token_encoding, buffer ? buffer->params().encoding().iconvName() : string());
 413                         command = libScriptSearch(command);
 414
 415                         if (!conv.parselog.empty())
 416                                 command += " 2> " + quoteName(infile2 + ".out");
 417
 418                         if (conv.from == "dvi" && conv.to == "ps")
 419                                 command = add_options(command,
 420                                                       buffer->params().dvips_options());
 421                         else if (conv.from == "dvi" && prefixIs(conv.to, "pdf"))
 422                                 command = add_options(command,
 423                                                       dvipdfm_options(buffer->params()));
 424
 425                         LYXERR(Debug::FILES, "Calling " << command);
 426                         if (buffer)
 427                                 buffer->message(_("Executing command: ")
 428                                 + from_utf8(command));
 429
 430                         Systemcall one;
 431                         int res;
 432                         if (dummy) {
 433                                 res = one.startscript(Systemcall::DontWait,
 434                                         to_filesystem8bit(from_utf8(command)));
 435                                 // We're not waiting for the result, so we can't do anything
 436                                 // else here.
 437                         } else {
 438                                 res = one.startscript(Systemcall::Wait,
 439                                                 to_filesystem8bit(from_utf8(command)));
 440                                 if (!real_outfile.empty()) {
 441                                         Mover const & mover = getMover(conv.to);
 442                                         if (!mover.rename(outfile, real_outfile))
 443                                                 res = -1;
 444                                         else
 445                                                 LYXERR(Debug::FILES, "renaming file " << outfile
 446                                                         << " to " << real_outfile);
 447                                         // Finally, don't forget to tell any future
 448                                         // converters to use the renamed file...
 449                                         outfile = real_outfile;
 450                                 }
 451
 452                                 if (!conv.parselog.empty()) {
 453                                         string const logfile =  infile2 + ".log";
 454                                         string const script = libScriptSearch(conv.parselog);
 455                                         string const command2 = script +
 456                                                 " < " + quoteName(infile2 + ".out") +
 457                                                 " > " + quoteName(logfile);
 458                                         one.startscript(Systemcall::Wait,
 459                                                 to_filesystem8bit(from_utf8(command2)));
 460                                         if (!scanLog(*buffer, command, makeAbsPath(logfile, path), errorList))
 461                                                 return false;
 462                                 }
 463                         }
 464
 465                         if (res) {
 466                                 if (conv.to == "program") {
 467                                         Alert::error(_("Build errors"),
 468                                                 _("There were errors during the build process."));
 469                                 } else {
 470 // FIXME: this should go out of here. For example, here we cannot say if
 471 // it is a document (.lyx) or something else. Same goes for elsewhere.
 472                                         Alert::error(_("Cannot convert file"),
 473                                                 bformat(_("An error occurred whilst running %1$s"),
 474                                                 from_utf8(command.substr(0, 50))));
 475                                 }
 476                                 return false;
 477                         }
 478                 }
 479         }
 480
 481         Converter const & conv = converterlist_[edgepath.back()];
 482         if (conv.To->dummy())
 483                 return true;
 484
 485         if (!conv.result_dir.empty()) {
 486                 // The converter has put the file(s) in a directory.
 487                 // In this case we ignore the given to_file.
 488                 if (from_base != to_base) {
 489                         string const from = subst(conv.result_dir,
 490                                             token_base, from_base);
 491                         string const to = subst(conv.result_dir,
 492                                           token_base, to_base);
 493                         Mover const & mover = getMover(conv.from);
 494                         if (!mover.rename(FileName(from), FileName(to))) {
 495                                 Alert::error(_("Cannot convert file"),
 496                                         bformat(_("Could not move a temporary directory from %1$s to %2$s."),
 497                                                 from_utf8(from), from_utf8(to)));
 498                                 return false;
 499                         }
 500                 }
 501                 return true;
 502         } else {
 503                 if (conversionflags & try_cache)
 504                         ConverterCache::get().add(orig_from, to_format, outfile);
 505                 return move(conv.to, outfile, to_file, conv.latex);
 506         }
 507 }
 508
 509
 510 bool Converters::move(string const & fmt,
 511                       FileName const & from, FileName const & to, bool copy)
 512 {
 513         if (from == to)
 514                 return true;
 515
 516         bool no_errors = true;
 517         string const path = onlyPath(from.absFileName());
 518         string const base = onlyFileName(removeExtension(from.absFileName()));
 519         string const to_base = removeExtension(to.absFileName());
 520         string const to_extension = getExtension(to.absFileName());
 521
 522         support::FileNameList const files = FileName(path).dirList(getExtension(from.absFileName()));
 523         for (support::FileNameList::const_iterator it = files.begin();
 524              it != files.end(); ++it) {
 525                 string const from2 = it->absFileName();
 526                 string const file2 = onlyFileName(from2);
 527                 if (prefixIs(file2, base)) {
 528                         string const to2 = changeExtension(
 529                                 to_base + file2.substr(base.length()),
 530                                 to_extension);
 531                         LYXERR(Debug::FILES, "moving " << from2 << " to " << to2);
 532
 533                         Mover const & mover = getMover(fmt);
 534                         bool const moved = copy
 535                                 ? mover.copy(*it, FileName(to2))
 536                                 : mover.rename(*it, FileName(to2));
 537                         if (!moved && no_errors) {
 538                                 Alert::error(_("Cannot convert file"),
 539                                         bformat(copy ?
 540                                                 _("Could not copy a temporary file from %1$s to %2$s.") :
 541                                                 _("Could not move a temporary file from %1$s to %2$s."),
 542                                                 from_utf8(from2), from_utf8(to2)));
 543                                 no_errors = false;
 544                         }
 545                 }
 546         }
 547         return no_errors;
 548 }
 549
 550
 551 bool Converters::formatIsUsed(string const & format)
 552 {
 553         ConverterList::const_iterator cit = converterlist_.begin();
 554         ConverterList::const_iterator end = converterlist_.end();
 555         for (; cit != end; ++cit) {
 556                 if (cit->from == format || cit->to == format)
 557                         return true;
 558         }
 559         return false;
 560 }
 561
 562
 563 bool Converters::scanLog(Buffer const & buffer, string const & /*command*/,
 564                          FileName const & filename, ErrorList & errorList)
 565 {
 566         OutputParams runparams(0);
 567         runparams.flavor = OutputParams::LATEX;
 568         LaTeX latex("", runparams, filename);
 569         TeXErrors terr;
 570         int const result = latex.scanLogFile(terr);
 571
 572         if (result & LaTeX::ERRORS)
 573                 buffer.bufferErrors(terr, errorList);
 574
 575         return true;
 576 }
 577
 578
 579 namespace {
 580
 581 class ShowMessage
 582         : public boost::signals::trackable {
 583 public:
 584         ShowMessage(Buffer const & b) : buffer_(b) {}
 585         void operator()(docstring const & msg) const { buffer_.message(msg); }
 586 private:
 587         Buffer const & buffer_;
 588 };
 589
 590 }
 591
 592
 593 bool Converters::runLaTeX(Buffer const & buffer, string const & command,
 594                           OutputParams const & runparams, ErrorList & errorList)
 595 {
 596         buffer.setBusy(true);
 597         buffer.message(_("Running LaTeX..."));
 598
 599         runparams.document_language = buffer.params().language->babel();
 600
 601         // do the LaTeX run(s)
 602         string const name = buffer.latexName();
 603         LaTeX latex(command, runparams, FileName(makeAbsPath(name)));
 604         TeXErrors terr;
 605         ShowMessage show(buffer);
 606         latex.message.connect(show);
 607         int const result = latex.run(terr);
 608
 609         if (result & LaTeX::ERRORS)
 610                 buffer.bufferErrors(terr, errorList);
 611
 612         // check return value from latex.run().
 613         if ((result & LaTeX::NO_LOGFILE) && !buffer.isClone()) {
 614                 docstring const str =
 615                         bformat(_("LaTeX did not run successfully. "
 616                                                "Additionally, LyX could not locate "
 617                                                "the LaTeX log %1$s."), from_utf8(name));
 618                 Alert::error(_("LaTeX failed"), str);
 619         } else if ((result & LaTeX::NO_OUTPUT) && !buffer.isClone()) {
 620                 Alert::warning(_("Output is empty"),
 621                                _("An empty output file was generated."));
 622         }
 623
 624
 625         buffer.setBusy(false);
 626
 627         int const ERROR_MASK =
 628                         LaTeX::NO_LOGFILE |
 629                         LaTeX::ERRORS |
 630                         LaTeX::NO_OUTPUT;
 631
 632         return (result & ERROR_MASK) == 0;
 633
 634 }
 635
 636
 637
 638 void Converters::buildGraph()
 639 {
 640         // clear graph's data structures
 641         G_.init(formats.size());
 642         // each of the converters knows how to convert one format to another
 643         // so, for each of them, we create an arrow on the graph, going from
 644         // the one to the other
 645         ConverterList::iterator it = converterlist_.begin();
 646         ConverterList::iterator const end = converterlist_.end();
 647         for (; it != end ; ++it) {
 648                 int const from = formats.getNumber(it->from);
 649                 int const to   = formats.getNumber(it->to);
 650                 G_.addEdge(from, to);
 651         }
 652 }
 653
 654
 655 vector<Format const *> const
 656 Converters::intToFormat(vector<int> const & input)
 657 {
 658         vector<Format const *> result(input.size());
 659
 660         vector<int>::const_iterator it = input.begin();
 661         vector<int>::const_iterator const end = input.end();
 662         vector<Format const *>::iterator rit = result.begin();
 663         for ( ; it != end; ++it, ++rit) {
 664                 *rit = &formats.get(*it);
 665         }
 666         return result;
 667 }
 668
 669
 670 vector<Format const *> const
 671 Converters::getReachableTo(string const & target, bool const clear_visited)
 672 {
 673         vector<int> const & reachablesto =
 674                 G_.getReachableTo(formats.getNumber(target), clear_visited);
 675
 676         return intToFormat(reachablesto);
 677 }
 678
 679
 680 vector<Format const *> const
 681 Converters::getReachable(string const & from, bool const only_viewable,
 682                          bool const clear_visited)
 683 {
 684         vector<int> const & reachables =
 685                 G_.getReachable(formats.getNumber(from),
 686                                 only_viewable,
 687                                 clear_visited);
 688
 689         return intToFormat(reachables);
 690 }
 691
 692
 693 bool Converters::isReachable(string const & from, string const & to)
 694 {
 695         return G_.isReachable(formats.getNumber(from),
 696                               formats.getNumber(to));
 697 }
 698
 699
 700 Graph::EdgePath Converters::getPath(string const & from, string const & to)
 701 {
 702         return G_.getPath(formats.getNumber(from),
 703                           formats.getNumber(to));
 704 }
 705
 706
 707 vector<Format const *> Converters::importableFormats()
 708 {
 709         vector<string> l = loaders();
 710         vector<Format const *> result = getReachableTo(l[0], true);
 711         for (vector<string>::const_iterator it = l.begin() + 1;
 712              it != l.end(); ++it) {
 713                 vector<Format const *> r = getReachableTo(*it, false);
 714                 result.insert(result.end(), r.begin(), r.end());
 715         }
 716         return result;
 717 }
 718
 719
 720 vector<Format const *> Converters::exportableFormats(bool only_viewable)
 721 {
 722         vector<string> s = savers();
 723         vector<Format const *> result = getReachable(s[0], only_viewable, true);
 724         for (vector<string>::const_iterator it = s.begin() + 1;
 725              it != s.end(); ++it) {
 726                 vector<Format const *> r =
 727                         getReachable(*it, only_viewable, false);
 728                 result.insert(result.end(), r.begin(), r.end());
 729         }
 730         return result;
 731 }
 732
 733
 734 vector<string> Converters::loaders() const
 735 {
 736         vector<string> v;
 737         v.push_back("lyx");
 738         v.push_back("text");
 739         v.push_back("textparagraph");
 740         return v;
 741 }
 742
 743
 744 vector<string> Converters::savers() const
 745 {
 746         vector<string> v;
 747         v.push_back("docbook");
 748         v.push_back("latex");
 749         v.push_back("literate");
 750         v.push_back("lyx");
 751         v.push_back("xhtml");
 752         v.push_back("pdflatex");
 753         v.push_back("platex");
 754         v.push_back("text");
 755         v.push_back("xetex");
 756         return v;
 757 }
 758
 759
 760 } // namespace lyx