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                         latex_flavor = flag_value.empty() ?
 114                                 "latex" : flag_value;
 115                 } else if (flag_name == "xml")
 116                         xml = true;
 117                 else if (flag_name == "needaux")
 118                         need_aux = true;
 119                 else if (flag_name == "resultdir")
 120                         result_dir = (flag_value.empty())
 121                                 ? token_base : flag_value;
 122                 else if (flag_name == "resultfile")
 123                         result_file = flag_value;
 124                 else if (flag_name == "parselog")
 125                         parselog = flag_value;
 126         }
 127         if (!result_dir.empty() && result_file.empty())
 128                 result_file = "index." + formats.extension(to);
 129         //if (!contains(command, token_from))
 130         //      latex = true;
 131 }
 132
 133
 134 Converter const * Converters::getConverter(string const & from,
 135                                             string const & to) const
 136 {
 137         ConverterList::const_iterator const cit =
 138                 find_if(converterlist_.begin(), converterlist_.end(),
 139                         ConverterEqual(from, to));
 140         if (cit != converterlist_.end())
 141                 return &(*cit);
 142         else
 143                 return 0;
 144 }
 145
 146
 147 int Converters::getNumber(string const & from, 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 distance(converterlist_.begin(), cit);
 154         else
 155                 return -1;
 156 }
 157
 158
 159 void Converters::add(string const & from, string const & to,
 160                      string const & command, string const & flags)
 161 {
 162         formats.add(from);
 163         formats.add(to);
 164         ConverterList::iterator it = find_if(converterlist_.begin(),
 165                                              converterlist_.end(),
 166                                              ConverterEqual(from , to));
 167
 168         Converter converter(from, to, command, flags);
 169         if (it != converterlist_.end() && !flags.empty() && flags[0] == '*') {
 170                 converter = *it;
 171                 converter.command = command;
 172                 converter.flags = flags;
 173         }
 174         converter.readFlags();
 175
 176         // If we have both latex & pdflatex, we set latex_command to latex.
 177         // The latex_command is used to update the .aux file when running
 178         // a converter that uses it.
 179         if (converter.latex
 180             && (latex_command_.empty() || converter.latex_flavor == "latex"))
 181                 latex_command_ = subst(command, token_from, "");
 182         // Similarly, set xelatex_command to xelatex.
 183         if (converter.latex
 184             && (xelatex_command_.empty() || converter.latex_flavor == "xelatex"))
 185                 xelatex_command_ = subst(command, token_from, "");
 186
 187         if (it == converterlist_.end()) {
 188                 converterlist_.push_back(converter);
 189         } else {
 190                 converter.From = it->From;
 191                 converter.To = it->To;
 192                 *it = converter;
 193         }
 194 }
 195
 196
 197 void Converters::erase(string const & from, string const & to)
 198 {
 199         ConverterList::iterator const it =
 200                 find_if(converterlist_.begin(),
 201                         converterlist_.end(),
 202                         ConverterEqual(from, to));
 203         if (it != converterlist_.end())
 204                 converterlist_.erase(it);
 205 }
 206
 207
 208 // This method updates the pointers From and To in all the converters.
 209 // The code is not very efficient, but it doesn't matter as the number
 210 // of formats and converters is small.
 211 // Furthermore, this method is called only on startup, or after
 212 // adding/deleting a format in FormPreferences (the latter calls can be
 213 // eliminated if the formats in the Formats class are stored using a map or
 214 // a list (instead of a vector), but this will cause other problems).
 215 void Converters::update(Formats const & formats)
 216 {
 217         ConverterList::iterator it = converterlist_.begin();
 218         ConverterList::iterator end = converterlist_.end();
 219         for (; it != end; ++it) {
 220                 it->From = formats.getFormat(it->from);
 221                 it->To = formats.getFormat(it->to);
 222         }
 223 }
 224
 225
 226 // This method updates the pointers From and To in the last converter.
 227 // It is called when adding a new converter in FormPreferences
 228 void Converters::updateLast(Formats const & formats)
 229 {
 230         if (converterlist_.begin() != converterlist_.end()) {
 231                 ConverterList::iterator it = converterlist_.end() - 1;
 232                 it->From = formats.getFormat(it->from);
 233                 it->To = formats.getFormat(it->to);
 234         }
 235 }
 236
 237
 238 OutputParams::FLAVOR Converters::getFlavor(Graph::EdgePath const & path)
 239 {
 240         for (Graph::EdgePath::const_iterator cit = path.begin();
 241              cit != path.end(); ++cit) {
 242                 Converter const & conv = converterlist_[*cit];
 243                 if (conv.latex)
 244                         if (conv.latex_flavor == "xelatex")
 245                                 return OutputParams::XETEX;
 246                         if (conv.latex_flavor == "lualatex")
 247                                 return OutputParams::LUATEX;
 248                         if (conv.latex_flavor == "dvilualatex")
 249                                 return OutputParams::DVILUATEX;
 250                         if (conv.latex_flavor == "pdflatex")
 251                                 return OutputParams::PDFLATEX;
 252                 if (conv.xml)
 253                         return OutputParams::XML;
 254         }
 255         return OutputParams::LATEX;
 256 }
 257
 258
 259 bool Converters::convert(Buffer const * buffer,
 260                          FileName const & from_file, FileName const & to_file,
 261                          FileName const & orig_from,
 262                          string const & from_format, string const & to_format,
 263                          ErrorList & errorList, int conversionflags)
 264 {
 265         if (from_format == to_format)
 266                 return move(from_format, from_file, to_file, false);
 267
 268         if ((conversionflags & try_cache) &&
 269             ConverterCache::get().inCache(orig_from, to_format))
 270                 return ConverterCache::get().copy(orig_from, to_format, to_file);
 271
 272         Graph::EdgePath edgepath = getPath(from_format, to_format);
 273         if (edgepath.empty()) {
 274                 if (conversionflags & try_default) {
 275                         // if no special converter defined, then we take the
 276                         // default one from ImageMagic.
 277                         string const from_ext = from_format.empty() ?
 278                                 getExtension(from_file.absFileName()) :
 279                                 formats.extension(from_format);
 280                         string const to_ext = formats.extension(to_format);
 281                         string const command =
 282                                 os::python() + ' ' +
 283                                 quoteName(libFileSearch("scripts", "convertDefault.py").toFilesystemEncoding()) +
 284                                 ' ' +
 285                                 quoteName(from_ext + ':' + from_file.toFilesystemEncoding()) +
 286                                 ' ' +
 287                                 quoteName(to_ext + ':' + to_file.toFilesystemEncoding());
 288                         LYXERR(Debug::FILES, "No converter defined! "
 289                                    "I use convertDefault.py:\n\t" << command);
 290                         Systemcall one;
 291                         one.startscript(Systemcall::Wait, command, buffer ?
 292                                         buffer->filePath() : string());
 293                         if (to_file.isReadableFile()) {
 294                                 if (conversionflags & try_cache)
 295                                         ConverterCache::get().add(orig_from,
 296                                                         to_format, to_file);
 297                                 return true;
 298                         }
 299                 }
 300
 301                 // only warn once per session and per file type
 302                 static std::map<string, string> warned;
 303                 if (warned.find(from_format) != warned.end() && warned.find(from_format)->second == to_format) {
 304                         return false;
 305                 }
 306                 warned.insert(make_pair(from_format, to_format));
 307
 308                 Alert::error(_("Cannot convert file"),
 309                              bformat(_("No information for converting %1$s "
 310                                                     "format files to %2$s.\n"
 311                                                     "Define a converter in the preferences."),
 312                                                         from_ascii(from_format), from_ascii(to_format)));
 313                 return false;
 314         }
 315
 316         // buffer is only invalid for importing, and then runparams is not
 317         // used anyway.
 318         OutputParams runparams(buffer ? &buffer->params().encoding() : 0);
 319         runparams.flavor = getFlavor(edgepath);
 320
 321         if (buffer) {
 322                 runparams.use_japanese = buffer->params().bufferFormat() == "platex";
 323                 runparams.use_indices = buffer->params().use_indices;
 324                 runparams.bibtex_command = (buffer->params().bibtex_command == "default") ?
 325                         string() : buffer->params().bibtex_command;
 326                 runparams.index_command = (buffer->params().index_command == "default") ?
 327                         string() : buffer->params().index_command;
 328         }
 329
 330         // Some converters (e.g. lilypond) can only output files to the
 331         // current directory, so we need to change the current directory.
 332         // This has the added benefit that all other files that may be
 333         // generated by the converter are deleted when LyX closes and do not
 334         // clutter the real working directory.
 335         string const path(onlyPath(from_file.absFileName()));
 336         // Prevent the compiler from optimizing away p
 337         FileName pp(path);
 338         PathChanger p(pp);
 339
 340         // empty the error list before any new conversion takes place.
 341         errorList.clear();
 342
 343         bool run_latex = false;
 344         string from_base = changeExtension(from_file.absFileName(), "");
 345         string to_base = changeExtension(to_file.absFileName(), "");
 346         FileName infile;
 347         FileName outfile = from_file;
 348         for (Graph::EdgePath::const_iterator cit = edgepath.begin();
 349              cit != edgepath.end(); ++cit) {
 350                 Converter const & conv = converterlist_[*cit];
 351                 bool dummy = conv.To->dummy() && conv.to != "program";
 352                 if (!dummy) {
 353                         LYXERR(Debug::FILES, "Converting from  "
 354                                << conv.from << " to " << conv.to);
 355                 }
 356                 infile = outfile;
 357                 outfile = FileName(conv.result_dir.empty()
 358                         ? changeExtension(from_file.absFileName(), conv.To->extension())
 359                         : addName(subst(conv.result_dir,
 360                                         token_base, from_base),
 361                                   subst(conv.result_file,
 362                                         token_base, onlyFileName(from_base))));
 363
 364                 // if input and output files are equal, we use a
 365                 // temporary file as intermediary (JMarc)
 366                 FileName real_outfile;
 367                 if (outfile == infile) {
 368                         real_outfile = infile;
 369                         // when importing, a buffer does not necessarily exist
 370                         if (buffer)
 371                                 outfile = FileName(addName(buffer->temppath(), "tmpfile.out"));
 372                         else
 373                                 outfile = FileName(addName(package().temp_dir().absFileName(),
 374                                                    "tmpfile.out"));
 375                 }
 376
 377                 if (conv.latex) {
 378                         run_latex = true;
 379                         string const command = subst(conv.command, token_from, "");
 380                         LYXERR(Debug::FILES, "Running " << command);
 381                         if (!runLaTeX(*buffer, command, runparams, errorList))
 382                                 return false;
 383                 } else {
 384                         if (conv.need_aux && !run_latex
 385                             && !latex_command_.empty()) {
 386                                 string const command = (buffer && buffer->params().useNonTeXFonts) ?
 387                                         xelatex_command_ : latex_command_;
 388                                 LYXERR(Debug::FILES, "Running " << command
 389                                         << " to update aux file");
 390                                 if (!runLaTeX(*buffer, command, runparams, errorList))
 391                                         return false;
 392                         }
 393
 394                         // FIXME UNICODE
 395                         string const infile2 =
 396                                 to_utf8(makeRelPath(from_utf8(infile.absFileName()), from_utf8(path)));
 397                         string const outfile2 =
 398                                 to_utf8(makeRelPath(from_utf8(outfile.absFileName()), from_utf8(path)));
 399
 400                         string command = conv.command;
 401                         command = subst(command, token_from, quoteName(infile2));
 402                         command = subst(command, token_base, quoteName(from_base));
 403                         command = subst(command, token_to, quoteName(outfile2));
 404                         command = subst(command, token_path, quoteName(onlyPath(infile.absFileName())));
 405                         command = subst(command, token_orig_path, quoteName(onlyPath(orig_from.absFileName())));
 406                         command = subst(command, token_encoding, buffer ? buffer->params().encoding().iconvName() : string());
 407                         command = libScriptSearch(command);
 408
 409                         if (!conv.parselog.empty())
 410                                 command += " 2> " + quoteName(infile2 + ".out");
 411
 412                         if (conv.from == "dvi" && conv.to == "ps")
 413                                 command = add_options(command,
 414                                                       buffer->params().dvips_options());
 415                         else if (conv.from == "dvi" && prefixIs(conv.to, "pdf"))
 416                                 command = add_options(command,
 417                                                       dvipdfm_options(buffer->params()));
 418
 419                         LYXERR(Debug::FILES, "Calling " << command);
 420                         if (buffer)
 421                                 buffer->message(_("Executing command: ")
 422                                 + from_utf8(command));
 423
 424                         Systemcall one;
 425                         int res;
 426                         if (dummy) {
 427                                 res = one.startscript(Systemcall::DontWait,
 428                                         to_filesystem8bit(from_utf8(command)),
 429                                         buffer ? buffer->filePath() : string());
 430                                 // We're not waiting for the result, so we can't do anything
 431                                 // else here.
 432                         } else {
 433                                 res = one.startscript(Systemcall::Wait,
 434                                                 to_filesystem8bit(from_utf8(command)),
 435                                                 buffer ? buffer->filePath()
 436                                                        : string());
 437                                 if (!real_outfile.empty()) {
 438                                         Mover const & mover = getMover(conv.to);
 439                                         if (!mover.rename(outfile, real_outfile))
 440                                                 res = -1;
 441                                         else
 442                                                 LYXERR(Debug::FILES, "renaming file " << outfile
 443                                                         << " to " << real_outfile);
 444                                         // Finally, don't forget to tell any future
 445                                         // converters to use the renamed file...
 446                                         outfile = real_outfile;
 447                                 }
 448
 449                                 if (!conv.parselog.empty()) {
 450                                         string const logfile =  infile2 + ".log";
 451                                         string const script = libScriptSearch(conv.parselog);
 452                                         string const command2 = script +
 453                                                 " < " + quoteName(infile2 + ".out") +
 454                                                 " > " + quoteName(logfile);
 455                                         one.startscript(Systemcall::Wait,
 456                                                 to_filesystem8bit(from_utf8(command2)),
 457                                                 buffer->filePath());
 458                                         if (!scanLog(*buffer, command, makeAbsPath(logfile, path), errorList))
 459                                                 return false;
 460                                 }
 461                         }
 462
 463                         if (res) {
 464                                 if (conv.to == "program") {
 465                                         Alert::error(_("Build errors"),
 466                                                 _("There were errors during the build process."));
 467                                 } else {
 468 // FIXME: this should go out of here. For example, here we cannot say if
 469 // it is a document (.lyx) or something else. Same goes for elsewhere.
 470                                         Alert::error(_("Cannot convert file"),
 471                                                 bformat(_("An error occurred while running:\n%1$s"),
 472                                                 wrapParas(from_utf8(command))));
 473                                 }
 474                                 return false;
 475                         }
 476                 }
 477         }
 478
 479         Converter const & conv = converterlist_[edgepath.back()];
 480         if (conv.To->dummy())
 481                 return true;
 482
 483         if (!conv.result_dir.empty()) {
 484                 // The converter has put the file(s) in a directory.
 485                 // In this case we ignore the given to_file.
 486                 if (from_base != to_base) {
 487                         string const from = subst(conv.result_dir,
 488                                             token_base, from_base);
 489                         string const to = subst(conv.result_dir,
 490                                           token_base, to_base);
 491                         Mover const & mover = getMover(conv.from);
 492                         if (!mover.rename(FileName(from), FileName(to))) {
 493                                 Alert::error(_("Cannot convert file"),
 494                                         bformat(_("Could not move a temporary directory from %1$s to %2$s."),
 495                                                 from_utf8(from), from_utf8(to)));
 496                                 return false;
 497                         }
 498                 }
 499                 return true;
 500         } else {
 501                 if (conversionflags & try_cache)
 502                         ConverterCache::get().add(orig_from, to_format, outfile);
 503                 return move(conv.to, outfile, to_file, conv.latex);
 504         }
 505 }
 506
 507
 508 bool Converters::move(string const & fmt,
 509                       FileName const & from, FileName const & to, bool copy)
 510 {
 511         if (from == to)
 512                 return true;
 513
 514         bool no_errors = true;
 515         string const path = onlyPath(from.absFileName());
 516         string const base = onlyFileName(removeExtension(from.absFileName()));
 517         string const to_base = removeExtension(to.absFileName());
 518         string const to_extension = getExtension(to.absFileName());
 519
 520         support::FileNameList const files = FileName(path).dirList(getExtension(from.absFileName()));
 521         for (support::FileNameList::const_iterator it = files.begin();
 522              it != files.end(); ++it) {
 523                 string const from2 = it->absFileName();
 524                 string const file2 = onlyFileName(from2);
 525                 if (prefixIs(file2, base)) {
 526                         string const to2 = changeExtension(
 527                                 to_base + file2.substr(base.length()),
 528                                 to_extension);
 529                         LYXERR(Debug::FILES, "moving " << from2 << " to " << to2);
 530
 531                         Mover const & mover = getMover(fmt);
 532                         bool const moved = copy
 533                                 ? mover.copy(*it, FileName(to2))
 534                                 : mover.rename(*it, FileName(to2));
 535                         if (!moved && no_errors) {
 536                                 Alert::error(_("Cannot convert file"),
 537                                         bformat(copy ?
 538                                                 _("Could not copy a temporary file from %1$s to %2$s.") :
 539                                                 _("Could not move a temporary file from %1$s to %2$s."),
 540                                                 from_utf8(from2), from_utf8(to2)));
 541                                 no_errors = false;
 542                         }
 543                 }
 544         }
 545         return no_errors;
 546 }
 547
 548
 549 bool Converters::formatIsUsed(string const & format)
 550 {
 551         ConverterList::const_iterator cit = converterlist_.begin();
 552         ConverterList::const_iterator end = converterlist_.end();
 553         for (; cit != end; ++cit) {
 554                 if (cit->from == format || cit->to == format)
 555                         return true;
 556         }
 557         return false;
 558 }
 559
 560
 561 bool Converters::scanLog(Buffer const & buffer, string const & /*command*/,
 562                          FileName const & filename, ErrorList & errorList)
 563 {
 564         OutputParams runparams(0);
 565         runparams.flavor = OutputParams::LATEX;
 566         LaTeX latex("", runparams, filename);
 567         TeXErrors terr;
 568         int const result = latex.scanLogFile(terr);
 569
 570         if (result & LaTeX::ERRORS)
 571                 buffer.bufferErrors(terr, errorList);
 572
 573         return true;
 574 }
 575
 576
 577 namespace {
 578
 579 class ShowMessage
 580         : public boost::signals::trackable {
 581 public:
 582         ShowMessage(Buffer const & b) : buffer_(b) {}
 583         void operator()(docstring const & msg) const { buffer_.message(msg); }
 584 private:
 585         Buffer const & buffer_;
 586 };
 587
 588 }
 589
 590
 591 bool Converters::runLaTeX(Buffer const & buffer, string const & command,
 592                           OutputParams const & runparams, ErrorList & errorList)
 593 {
 594         buffer.setBusy(true);
 595         buffer.message(_("Running LaTeX..."));
 596
 597         runparams.document_language = buffer.params().language->babel();
 598
 599         // do the LaTeX run(s)
 600         string const name = buffer.latexName();
 601         LaTeX latex(command, runparams, FileName(makeAbsPath(name)),
 602                     buffer.filePath());
 603         TeXErrors terr;
 604         ShowMessage show(buffer);
 605         latex.message.connect(show);
 606         int const result = latex.run(terr);
 607
 608         if (result & LaTeX::ERRORS)
 609                 buffer.bufferErrors(terr, errorList);
 610
 611         // check return value from latex.run().
 612         if ((result & LaTeX::NO_LOGFILE) && !buffer.isClone()) {
 613                 docstring const str =
 614                         bformat(_("LaTeX did not run successfully. "
 615                                                "Additionally, LyX could not locate "
 616                                                "the LaTeX log %1$s."), from_utf8(name));
 617                 Alert::error(_("LaTeX failed"), str);
 618         } else if ((result & LaTeX::NO_OUTPUT) && !buffer.isClone()) {
 619                 Alert::warning(_("Output is empty"),
 620                                _("An empty output file was generated."));
 621         }
 622
 623
 624         buffer.setBusy(false);
 625
 626         int const ERROR_MASK =
 627                         LaTeX::NO_LOGFILE |
 628                         LaTeX::ERRORS |
 629                         LaTeX::NO_OUTPUT;
 630
 631         return (result & ERROR_MASK) == 0;
 632
 633 }
 634
 635
 636
 637 void Converters::buildGraph()
 638 {
 639         // clear graph's data structures
 640         G_.init(formats.size());
 641         // each of the converters knows how to convert one format to another
 642         // so, for each of them, we create an arrow on the graph, going from
 643         // the one to the other
 644         ConverterList::iterator it = converterlist_.begin();
 645         ConverterList::iterator const end = converterlist_.end();
 646         for (; it != end ; ++it) {
 647                 int const from = formats.getNumber(it->from);
 648                 int const to   = formats.getNumber(it->to);
 649                 G_.addEdge(from, to);
 650         }
 651 }
 652
 653
 654 vector<Format const *> const
 655 Converters::intToFormat(vector<int> const & input)
 656 {
 657         vector<Format const *> result(input.size());
 658
 659         vector<int>::const_iterator it = input.begin();
 660         vector<int>::const_iterator const end = input.end();
 661         vector<Format const *>::iterator rit = result.begin();
 662         for ( ; it != end; ++it, ++rit) {
 663                 *rit = &formats.get(*it);
 664         }
 665         return result;
 666 }
 667
 668
 669 vector<Format const *> const
 670 Converters::getReachableTo(string const & target, bool const clear_visited)
 671 {
 672         vector<int> const & reachablesto =
 673                 G_.getReachableTo(formats.getNumber(target), clear_visited);
 674
 675         return intToFormat(reachablesto);
 676 }
 677
 678
 679 vector<Format const *> const
 680 Converters::getReachable(string const & from, bool const only_viewable,
 681                          bool const clear_visited, set<string> const & excludes)
 682 {
 683         set<int> excluded_numbers;;
 684
 685         set<string>::const_iterator sit = excludes.begin();
 686         set<string>::const_iterator const end = excludes.end();
 687         for (; sit != end; ++sit)
 688                 excluded_numbers.insert(formats.getNumber(*sit));
 689
 690         vector<int> const & reachables =
 691                 G_.getReachable(formats.getNumber(from),
 692                                 only_viewable,
 693                                 clear_visited,
 694                                 excluded_numbers);
 695
 696         return intToFormat(reachables);
 697 }
 698
 699
 700 bool Converters::isReachable(string const & from, string const & to)
 701 {
 702         return G_.isReachable(formats.getNumber(from),
 703                               formats.getNumber(to));
 704 }
 705
 706
 707 Graph::EdgePath Converters::getPath(string const & from, string const & to)
 708 {
 709         return G_.getPath(formats.getNumber(from),
 710                           formats.getNumber(to));
 711 }
 712
 713
 714 vector<Format const *> Converters::importableFormats()
 715 {
 716         vector<string> l = loaders();
 717         vector<Format const *> result = getReachableTo(l[0], true);
 718         vector<string>::const_iterator it = l.begin() + 1;
 719         vector<string>::const_iterator en = l.end();
 720         for (; it != en; ++it) {
 721                 vector<Format const *> r = getReachableTo(*it, false);
 722                 result.insert(result.end(), r.begin(), r.end());
 723         }
 724         return result;
 725 }
 726
 727
 728 vector<Format const *> Converters::exportableFormats(bool only_viewable)
 729 {
 730         vector<string> s = savers();
 731         vector<Format const *> result = getReachable(s[0], only_viewable, true);
 732         vector<string>::const_iterator it = s.begin() + 1;
 733         vector<string>::const_iterator en = s.end();
 734         for (; it != en; ++it) {
 735                 vector<Format const *> r =
 736                         getReachable(*it, only_viewable, false);
 737                 result.insert(result.end(), r.begin(), r.end());
 738         }
 739         return result;
 740 }
 741
 742
 743 vector<string> Converters::loaders() const
 744 {
 745         vector<string> v;
 746         v.push_back("lyx");
 747         v.push_back("text");
 748         v.push_back("textparagraph");
 749         return v;
 750 }
 751
 752
 753 vector<string> Converters::savers() const
 754 {
 755         vector<string> v;
 756         v.push_back("docbook");
 757         v.push_back("latex");
 758         v.push_back("literate");
 759         v.push_back("luatex");
 760         v.push_back("dviluatex");
 761         v.push_back("lyx");
 762         v.push_back("xhtml");
 763         v.push_back("pdflatex");
 764         v.push_back("platex");
 765         v.push_back("text");
 766         v.push_back("xetex");
 767         return v;
 768 }
 769
 770
 771 } // namespace lyx