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.from, "luatex"))
 261                                 return OutputParams::LUATEX;
 262                         if (contains(conv.to, "pdf"))
 263                                 return OutputParams::PDFLATEX;
 264                 if (conv.xml)
 265                         return OutputParams::XML;
 266         }
 267         return OutputParams::LATEX;
 268 }
 269
 270
 271 bool Converters::convert(Buffer const * buffer,
 272                          FileName const & from_file, FileName const & to_file,
 273                          FileName const & orig_from,
 274                          string const & from_format, string const & to_format,
 275                          ErrorList & errorList, int conversionflags)
 276 {
 277         if (from_format == to_format)
 278                 return move(from_format, from_file, to_file, false);
 279
 280         if ((conversionflags & try_cache) &&
 281             ConverterCache::get().inCache(orig_from, to_format))
 282                 return ConverterCache::get().copy(orig_from, to_format, to_file);
 283
 284         Graph::EdgePath edgepath = getPath(from_format, to_format);
 285         if (edgepath.empty()) {
 286                 if (conversionflags & try_default) {
 287                         // if no special converter defined, then we take the
 288                         // default one from ImageMagic.
 289                         string const from_ext = from_format.empty() ?
 290                                 getExtension(from_file.absFileName()) :
 291                                 formats.extension(from_format);
 292                         string const to_ext = formats.extension(to_format);
 293                         string const command =
 294                                 os::python() + ' ' +
 295                                 quoteName(libFileSearch("scripts", "convertDefault.py").toFilesystemEncoding()) +
 296                                 ' ' +
 297                                 quoteName(from_ext + ':' + from_file.toFilesystemEncoding()) +
 298                                 ' ' +
 299                                 quoteName(to_ext + ':' + to_file.toFilesystemEncoding());
 300                         LYXERR(Debug::FILES, "No converter defined! "
 301                                    "I use convertDefault.py:\n\t" << command);
 302                         Systemcall one;
 303                         one.startscript(Systemcall::Wait, command);
 304                         if (to_file.isReadableFile()) {
 305                                 if (conversionflags & try_cache)
 306                                         ConverterCache::get().add(orig_from,
 307                                                         to_format, to_file);
 308                                 return true;
 309                         }
 310                 }
 311
 312                 // only warn once per session and per file type
 313                 static std::map<string, string> warned;
 314                 if (warned.find(from_format) != warned.end() && warned.find(from_format)->second == to_format) {
 315                         return false;
 316                 }
 317                 warned.insert(make_pair(from_format, to_format));
 318
 319                 Alert::error(_("Cannot convert file"),
 320                              bformat(_("No information for converting %1$s "
 321                                                     "format files to %2$s.\n"
 322                                                     "Define a converter in the preferences."),
 323                                                         from_ascii(from_format), from_ascii(to_format)));
 324                 return false;
 325         }
 326
 327         // buffer is only invalid for importing, and then runparams is not
 328         // used anyway.
 329         OutputParams runparams(buffer ? &buffer->params().encoding() : 0);
 330         runparams.flavor = getFlavor(edgepath);
 331
 332         if (buffer) {
 333                 runparams.use_japanese = buffer->bufferFormat() == "platex";
 334                 runparams.use_indices = buffer->params().use_indices;
 335                 runparams.bibtex_command = (buffer->params().bibtex_command == "default") ?
 336                         string() : buffer->params().bibtex_command;
 337                 runparams.index_command = (buffer->params().index_command == "default") ?
 338                         string() : buffer->params().index_command;
 339         }
 340
 341         // Some converters (e.g. lilypond) can only output files to the
 342         // current directory, so we need to change the current directory.
 343         // This has the added benefit that all other files that may be
 344         // generated by the converter are deleted when LyX closes and do not
 345         // clutter the real working directory.
 346         string const path(onlyPath(from_file.absFileName()));
 347         // Prevent the compiler from optimizing away p
 348         FileName pp(path);
 349         PathChanger p(pp);
 350
 351         // empty the error list before any new conversion takes place.
 352         errorList.clear();
 353
 354         bool run_latex = false;
 355         string from_base = changeExtension(from_file.absFileName(), "");
 356         string to_base = changeExtension(to_file.absFileName(), "");
 357         FileName infile;
 358         FileName outfile = from_file;
 359         for (Graph::EdgePath::const_iterator cit = edgepath.begin();
 360              cit != edgepath.end(); ++cit) {
 361                 Converter const & conv = converterlist_[*cit];
 362                 bool dummy = conv.To->dummy() && conv.to != "program";
 363                 if (!dummy) {
 364                         LYXERR(Debug::FILES, "Converting from  "
 365                                << conv.from << " to " << conv.to);
 366                 }
 367                 infile = outfile;
 368                 outfile = FileName(conv.result_dir.empty()
 369                         ? changeExtension(from_file.absFileName(), conv.To->extension())
 370                         : addName(subst(conv.result_dir,
 371                                         token_base, from_base),
 372                                   subst(conv.result_file,
 373                                         token_base, onlyFileName(from_base))));
 374
 375                 // if input and output files are equal, we use a
 376                 // temporary file as intermediary (JMarc)
 377                 FileName real_outfile;
 378                 if (outfile == infile) {
 379                         real_outfile = infile;
 380                         // when importing, a buffer does not necessarily exist
 381                         if (buffer)
 382                                 outfile = FileName(addName(buffer->temppath(), "tmpfile.out"));
 383                         else
 384                                 outfile = FileName(addName(package().temp_dir().absFileName(),
 385                                                    "tmpfile.out"));
 386                 }
 387
 388                 if (conv.latex) {
 389                         run_latex = true;
 390                         string const command = subst(conv.command, token_from, "");
 391                         LYXERR(Debug::FILES, "Running " << command);
 392                         if (!runLaTeX(*buffer, command, runparams, errorList))
 393                                 return false;
 394                 } else {
 395                         if (conv.need_aux && !run_latex
 396                             && !latex_command_.empty()) {
 397                                 LYXERR(Debug::FILES, "Running " << latex_command_
 398                                         << " to update aux file");
 399                                 runLaTeX(*buffer, latex_command_, runparams, errorList);
 400                         }
 401
 402                         // FIXME UNICODE
 403                         string const infile2 =
 404                                 to_utf8(makeRelPath(from_utf8(infile.absFileName()), from_utf8(path)));
 405                         string const outfile2 =
 406                                 to_utf8(makeRelPath(from_utf8(outfile.absFileName()), from_utf8(path)));
 407
 408                         string command = conv.command;
 409                         command = subst(command, token_from, quoteName(infile2));
 410                         command = subst(command, token_base, quoteName(from_base));
 411                         command = subst(command, token_to, quoteName(outfile2));
 412                         command = subst(command, token_path, quoteName(infile.onlyPath().absFileName()));
 413                         command = subst(command, token_orig_path, quoteName(orig_from.onlyPath().absFileName()));
 414                         command = subst(command, token_encoding, buffer ? buffer->params().encoding().iconvName() : string());
 415                         command = libScriptSearch(command);
 416
 417                         if (!conv.parselog.empty())
 418                                 command += " 2> " + quoteName(infile2 + ".out");
 419
 420                         if (conv.from == "dvi" && conv.to == "ps")
 421                                 command = add_options(command,
 422                                                       buffer->params().dvips_options());
 423                         else if (conv.from == "dvi" && prefixIs(conv.to, "pdf"))
 424                                 command = add_options(command,
 425                                                       dvipdfm_options(buffer->params()));
 426
 427                         LYXERR(Debug::FILES, "Calling " << command);
 428                         if (buffer)
 429                                 buffer->message(_("Executing command: ")
 430                                 + from_utf8(command));
 431
 432                         Systemcall one;
 433                         int res;
 434                         if (dummy) {
 435                                 res = one.startscript(Systemcall::DontWait,
 436                                         to_filesystem8bit(from_utf8(command)));
 437                                 // We're not waiting for the result, so we can't do anything
 438                                 // else here.
 439                         } else {
 440                                 res = one.startscript(Systemcall::Wait,
 441                                                 to_filesystem8bit(from_utf8(command)));
 442                                 if (!real_outfile.empty()) {
 443                                         Mover const & mover = getMover(conv.to);
 444                                         if (!mover.rename(outfile, real_outfile))
 445                                                 res = -1;
 446                                         else
 447                                                 LYXERR(Debug::FILES, "renaming file " << outfile
 448                                                         << " to " << real_outfile);
 449                                         // Finally, don't forget to tell any future
 450                                         // converters to use the renamed file...
 451                                         outfile = real_outfile;
 452                                 }
 453
 454                                 if (!conv.parselog.empty()) {
 455                                         string const logfile =  infile2 + ".log";
 456                                         string const script = libScriptSearch(conv.parselog);
 457                                         string const command2 = script +
 458                                                 " < " + quoteName(infile2 + ".out") +
 459                                                 " > " + quoteName(logfile);
 460                                         one.startscript(Systemcall::Wait,
 461                                                 to_filesystem8bit(from_utf8(command2)));
 462                                         if (!scanLog(*buffer, command, makeAbsPath(logfile, path), errorList))
 463                                                 return false;
 464                                 }
 465                         }
 466
 467                         if (res) {
 468                                 if (conv.to == "program") {
 469                                         Alert::error(_("Build errors"),
 470                                                 _("There were errors during the build process."));
 471                                 } else {
 472 // FIXME: this should go out of here. For example, here we cannot say if
 473 // it is a document (.lyx) or something else. Same goes for elsewhere.
 474                                         Alert::error(_("Cannot convert file"),
 475                                                 bformat(_("An error occurred whilst running %1$s"),
 476                                                 from_utf8(command.substr(0, 50))));
 477                                 }
 478                                 return false;
 479                         }
 480                 }
 481         }
 482
 483         Converter const & conv = converterlist_[edgepath.back()];
 484         if (conv.To->dummy())
 485                 return true;
 486
 487         if (!conv.result_dir.empty()) {
 488                 // The converter has put the file(s) in a directory.
 489                 // In this case we ignore the given to_file.
 490                 if (from_base != to_base) {
 491                         string const from = subst(conv.result_dir,
 492                                             token_base, from_base);
 493                         string const to = subst(conv.result_dir,
 494                                           token_base, to_base);
 495                         Mover const & mover = getMover(conv.from);
 496                         if (!mover.rename(FileName(from), FileName(to))) {
 497                                 Alert::error(_("Cannot convert file"),
 498                                         bformat(_("Could not move a temporary directory from %1$s to %2$s."),
 499                                                 from_utf8(from), from_utf8(to)));
 500                                 return false;
 501                         }
 502                 }
 503                 return true;
 504         } else {
 505                 if (conversionflags & try_cache)
 506                         ConverterCache::get().add(orig_from, to_format, outfile);
 507                 return move(conv.to, outfile, to_file, conv.latex);
 508         }
 509 }
 510
 511
 512 bool Converters::move(string const & fmt,
 513                       FileName const & from, FileName const & to, bool copy)
 514 {
 515         if (from == to)
 516                 return true;
 517
 518         bool no_errors = true;
 519         string const path = onlyPath(from.absFileName());
 520         string const base = onlyFileName(removeExtension(from.absFileName()));
 521         string const to_base = removeExtension(to.absFileName());
 522         string const to_extension = getExtension(to.absFileName());
 523
 524         support::FileNameList const files = FileName(path).dirList(getExtension(from.absFileName()));
 525         for (support::FileNameList::const_iterator it = files.begin();
 526              it != files.end(); ++it) {
 527                 string const from2 = it->absFileName();
 528                 string const file2 = onlyFileName(from2);
 529                 if (prefixIs(file2, base)) {
 530                         string const to2 = changeExtension(
 531                                 to_base + file2.substr(base.length()),
 532                                 to_extension);
 533                         LYXERR(Debug::FILES, "moving " << from2 << " to " << to2);
 534
 535                         Mover const & mover = getMover(fmt);
 536                         bool const moved = copy
 537                                 ? mover.copy(*it, FileName(to2))
 538                                 : mover.rename(*it, FileName(to2));
 539                         if (!moved && no_errors) {
 540                                 Alert::error(_("Cannot convert file"),
 541                                         bformat(copy ?
 542                                                 _("Could not copy a temporary file from %1$s to %2$s.") :
 543                                                 _("Could not move a temporary file from %1$s to %2$s."),
 544                                                 from_utf8(from2), from_utf8(to2)));
 545                                 no_errors = false;
 546                         }
 547                 }
 548         }
 549         return no_errors;
 550 }
 551
 552
 553 bool Converters::formatIsUsed(string const & format)
 554 {
 555         ConverterList::const_iterator cit = converterlist_.begin();
 556         ConverterList::const_iterator end = converterlist_.end();
 557         for (; cit != end; ++cit) {
 558                 if (cit->from == format || cit->to == format)
 559                         return true;
 560         }
 561         return false;
 562 }
 563
 564
 565 bool Converters::scanLog(Buffer const & buffer, string const & /*command*/,
 566                          FileName const & filename, ErrorList & errorList)
 567 {
 568         OutputParams runparams(0);
 569         runparams.flavor = OutputParams::LATEX;
 570         LaTeX latex("", runparams, filename);
 571         TeXErrors terr;
 572         int const result = latex.scanLogFile(terr);
 573
 574         if (result & LaTeX::ERRORS)
 575                 buffer.bufferErrors(terr, errorList);
 576
 577         return true;
 578 }
 579
 580
 581 namespace {
 582
 583 class ShowMessage
 584         : public boost::signals::trackable {
 585 public:
 586         ShowMessage(Buffer const & b) : buffer_(b) {}
 587         void operator()(docstring const & msg) const { buffer_.message(msg); }
 588 private:
 589         Buffer const & buffer_;
 590 };
 591
 592 }
 593
 594
 595 bool Converters::runLaTeX(Buffer const & buffer, string const & command,
 596                           OutputParams const & runparams, ErrorList & errorList)
 597 {
 598         buffer.setBusy(true);
 599         buffer.message(_("Running LaTeX..."));
 600
 601         runparams.document_language = buffer.params().language->babel();
 602
 603         // do the LaTeX run(s)
 604         string const name = buffer.latexName();
 605         LaTeX latex(command, runparams, FileName(makeAbsPath(name)));
 606         TeXErrors terr;
 607         ShowMessage show(buffer);
 608         latex.message.connect(show);
 609         int const result = latex.run(terr);
 610
 611         if (result & LaTeX::ERRORS)
 612                 buffer.bufferErrors(terr, errorList);
 613
 614         // check return value from latex.run().
 615         if ((result & LaTeX::NO_LOGFILE) && !buffer.isClone()) {
 616                 docstring const str =
 617                         bformat(_("LaTeX did not run successfully. "
 618                                                "Additionally, LyX could not locate "
 619                                                "the LaTeX log %1$s."), from_utf8(name));
 620                 Alert::error(_("LaTeX failed"), str);
 621         } else if ((result & LaTeX::NO_OUTPUT) && !buffer.isClone()) {
 622                 Alert::warning(_("Output is empty"),
 623                                _("An empty output file was generated."));
 624         }
 625
 626
 627         buffer.setBusy(false);
 628
 629         int const ERROR_MASK =
 630                         LaTeX::NO_LOGFILE |
 631                         LaTeX::ERRORS |
 632                         LaTeX::NO_OUTPUT;
 633
 634         return (result & ERROR_MASK) == 0;
 635
 636 }
 637
 638
 639
 640 void Converters::buildGraph()
 641 {
 642         // clear graph's data structures
 643         G_.init(formats.size());
 644         // each of the converters knows how to convert one format to another
 645         // so, for each of them, we create an arrow on the graph, going from
 646         // the one to the other
 647         ConverterList::iterator it = converterlist_.begin();
 648         ConverterList::iterator const end = converterlist_.end();
 649         for (; it != end ; ++it) {
 650                 int const from = formats.getNumber(it->from);
 651                 int const to   = formats.getNumber(it->to);
 652                 G_.addEdge(from, to);
 653         }
 654 }
 655
 656
 657 vector<Format const *> const
 658 Converters::intToFormat(vector<int> const & input)
 659 {
 660         vector<Format const *> result(input.size());
 661
 662         vector<int>::const_iterator it = input.begin();
 663         vector<int>::const_iterator const end = input.end();
 664         vector<Format const *>::iterator rit = result.begin();
 665         for ( ; it != end; ++it, ++rit) {
 666                 *rit = &formats.get(*it);
 667         }
 668         return result;
 669 }
 670
 671
 672 vector<Format const *> const
 673 Converters::getReachableTo(string const & target, bool const clear_visited)
 674 {
 675         vector<int> const & reachablesto =
 676                 G_.getReachableTo(formats.getNumber(target), clear_visited);
 677
 678         return intToFormat(reachablesto);
 679 }
 680
 681
 682 vector<Format const *> const
 683 Converters::getReachable(string const & from, bool const only_viewable,
 684                          bool const clear_visited)
 685 {
 686         vector<int> const & reachables =
 687                 G_.getReachable(formats.getNumber(from),
 688                                 only_viewable,
 689                                 clear_visited);
 690
 691         return intToFormat(reachables);
 692 }
 693
 694
 695 bool Converters::isReachable(string const & from, string const & to)
 696 {
 697         return G_.isReachable(formats.getNumber(from),
 698                               formats.getNumber(to));
 699 }
 700
 701
 702 Graph::EdgePath Converters::getPath(string const & from, string const & to)
 703 {
 704         return G_.getPath(formats.getNumber(from),
 705                           formats.getNumber(to));
 706 }
 707
 708
 709 vector<Format const *> Converters::importableFormats()
 710 {
 711         vector<string> l = loaders();
 712         vector<Format const *> result = getReachableTo(l[0], true);
 713         for (vector<string>::const_iterator it = l.begin() + 1;
 714              it != l.end(); ++it) {
 715                 vector<Format const *> r = getReachableTo(*it, false);
 716                 result.insert(result.end(), r.begin(), r.end());
 717         }
 718         return result;
 719 }
 720
 721
 722 vector<Format const *> Converters::exportableFormats(bool only_viewable)
 723 {
 724         vector<string> s = savers();
 725         vector<Format const *> result = getReachable(s[0], only_viewable, true);
 726         for (vector<string>::const_iterator it = s.begin() + 1;
 727              it != s.end(); ++it) {
 728                 vector<Format const *> r =
 729                         getReachable(*it, only_viewable, false);
 730                 result.insert(result.end(), r.begin(), r.end());
 731         }
 732         return result;
 733 }
 734
 735
 736 vector<string> Converters::loaders() const
 737 {
 738         vector<string> v;
 739         v.push_back("lyx");
 740         v.push_back("text");
 741         v.push_back("textparagraph");
 742         return v;
 743 }
 744
 745
 746 vector<string> Converters::savers() const
 747 {
 748         vector<string> v;
 749         v.push_back("docbook");
 750         v.push_back("latex");
 751         v.push_back("literate");
 752         v.push_back("luatex");
 753         v.push_back("lyx");
 754         v.push_back("xhtml");
 755         v.push_back("pdflatex");
 756         v.push_back("platex");
 757         v.push_back("text");
 758         v.push_back("xetex");
 759         return v;
 760 }
 761
 762
 763 } // namespace lyx