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 string const token_latex_encoding("$$E");
  55
  56
  57 string const add_options(string const & command, string const & options)
  58 {
  59         string head;
  60         string const tail = split(command, head, ' ');
  61         return head + ' ' + options + ' ' + tail;
  62 }
  63
  64
  65 string const dvipdfm_options(BufferParams const & bp)
  66 {
  67         string result;
  68
  69         if (bp.papersize != PAPER_CUSTOM) {
  70                 string const paper_size = bp.paperSizeName(BufferParams::DVIPDFM);
  71                 if (!paper_size.empty())
  72                         result = "-p "+ paper_size;
  73
  74                 if (bp.orientation == ORIENTATION_LANDSCAPE)
  75                         result += " -l";
  76         }
  77
  78         return result;
  79 }
  80
  81
  82 class ConverterEqual {
  83 public:
  84         ConverterEqual(string const & from, string const & to)
  85                 : from_(from), to_(to) {}
  86         bool operator()(Converter const & c) const {
  87                 return c.from == from_ && c.to == to_;
  88         }
  89 private:
  90         string const from_;
  91         string const to_;
  92 };
  93
  94 } // namespace anon
  95
  96
  97 Converter::Converter(string const & f, string const & t,
  98                      string const & c, string const & l)
  99         : from(f), to(t), command(c), flags(l),
 100           From(0), To(0), latex(false), xml(false),
 101           need_aux(false)
 102 {}
 103
 104
 105 void Converter::readFlags()
 106 {
 107         string flag_list(flags);
 108         while (!flag_list.empty()) {
 109                 string flag_name, flag_value;
 110                 flag_list = split(flag_list, flag_value, ',');
 111                 flag_value = split(flag_value, flag_name, '=');
 112                 if (flag_name == "latex") {
 113                         latex = true;
 114                         latex_flavor = flag_value.empty() ?
 115                                 "latex" : flag_value;
 116                 } else if (flag_name == "xml")
 117                         xml = true;
 118                 else if (flag_name == "needaux")
 119                         need_aux = true;
 120                 else if (flag_name == "resultdir")
 121                         result_dir = (flag_value.empty())
 122                                 ? token_base : flag_value;
 123                 else if (flag_name == "resultfile")
 124                         result_file = flag_value;
 125                 else if (flag_name == "parselog")
 126                         parselog = flag_value;
 127         }
 128         if (!result_dir.empty() && result_file.empty())
 129                 result_file = "index." + formats.extension(to);
 130         //if (!contains(command, token_from))
 131         //      latex = true;
 132 }
 133
 134
 135 Converter const * Converters::getConverter(string const & from,
 136                                             string const & to) const
 137 {
 138         ConverterList::const_iterator const cit =
 139                 find_if(converterlist_.begin(), converterlist_.end(),
 140                         ConverterEqual(from, to));
 141         if (cit != converterlist_.end())
 142                 return &(*cit);
 143         else
 144                 return 0;
 145 }
 146
 147
 148 int Converters::getNumber(string const & from, 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 distance(converterlist_.begin(), cit);
 155         else
 156                 return -1;
 157 }
 158
 159
 160 void Converters::add(string const & from, string const & to,
 161                      string const & command, string const & flags)
 162 {
 163         formats.add(from);
 164         formats.add(to);
 165         ConverterList::iterator it = find_if(converterlist_.begin(),
 166                                              converterlist_.end(),
 167                                              ConverterEqual(from , to));
 168
 169         Converter converter(from, to, command, flags);
 170         if (it != converterlist_.end() && !flags.empty() && flags[0] == '*') {
 171                 converter = *it;
 172                 converter.command = command;
 173                 converter.flags = flags;
 174         }
 175         converter.readFlags();
 176
 177         // If we have both latex & pdflatex, we set latex_command to latex.
 178         // The latex_command is used to update the .aux file when running
 179         // a converter that uses it.
 180         if (converter.latex
 181             && (latex_command_.empty() || converter.latex_flavor == "latex"))
 182                 latex_command_ = subst(command, token_from, "");
 183         // Similarly, set xelatex_command to xelatex.
 184         if (converter.latex
 185             && (xelatex_command_.empty() || converter.latex_flavor == "xelatex"))
 186                 xelatex_command_ = subst(command, token_from, "");
 187
 188         if (it == converterlist_.end()) {
 189                 converterlist_.push_back(converter);
 190         } else {
 191                 converter.From = it->From;
 192                 converter.To = it->To;
 193                 *it = converter;
 194         }
 195 }
 196
 197
 198 void Converters::erase(string const & from, string const & to)
 199 {
 200         ConverterList::iterator const it =
 201                 find_if(converterlist_.begin(),
 202                         converterlist_.end(),
 203                         ConverterEqual(from, to));
 204         if (it != converterlist_.end())
 205                 converterlist_.erase(it);
 206 }
 207
 208
 209 // This method updates the pointers From and To in all the converters.
 210 // The code is not very efficient, but it doesn't matter as the number
 211 // of formats and converters is small.
 212 // Furthermore, this method is called only on startup, or after
 213 // adding/deleting a format in FormPreferences (the latter calls can be
 214 // eliminated if the formats in the Formats class are stored using a map or
 215 // a list (instead of a vector), but this will cause other problems).
 216 void Converters::update(Formats const & formats)
 217 {
 218         ConverterList::iterator it = converterlist_.begin();
 219         ConverterList::iterator end = converterlist_.end();
 220         for (; it != end; ++it) {
 221                 it->From = formats.getFormat(it->from);
 222                 it->To = formats.getFormat(it->to);
 223         }
 224 }
 225
 226
 227 // This method updates the pointers From and To in the last converter.
 228 // It is called when adding a new converter in FormPreferences
 229 void Converters::updateLast(Formats const & formats)
 230 {
 231         if (converterlist_.begin() != converterlist_.end()) {
 232                 ConverterList::iterator it = converterlist_.end() - 1;
 233                 it->From = formats.getFormat(it->from);
 234                 it->To = formats.getFormat(it->to);
 235         }
 236 }
 237
 238
 239 OutputParams::FLAVOR Converters::getFlavor(Graph::EdgePath const & path)
 240 {
 241         for (Graph::EdgePath::const_iterator cit = path.begin();
 242              cit != path.end(); ++cit) {
 243                 Converter const & conv = converterlist_[*cit];
 244                 if (conv.latex)
 245                         if (conv.latex_flavor == "xelatex")
 246                                 return OutputParams::XETEX;
 247                         if (conv.latex_flavor == "lualatex")
 248                                 return OutputParams::LUATEX;
 249                         if (conv.latex_flavor == "dvilualatex")
 250                                 return OutputParams::DVILUATEX;
 251                         if (conv.latex_flavor == "pdflatex")
 252                                 return OutputParams::PDFLATEX;
 253                 if (conv.xml)
 254                         return OutputParams::XML;
 255         }
 256         return OutputParams::LATEX;
 257 }
 258
 259
 260 bool Converters::convert(Buffer const * buffer,
 261                          FileName const & from_file, FileName const & to_file,
 262                          FileName const & orig_from,
 263                          string const & from_format, string const & to_format,
 264                          ErrorList & errorList, int conversionflags)
 265 {
 266         if (from_format == to_format)
 267                 return move(from_format, from_file, to_file, false);
 268
 269         if ((conversionflags & try_cache) &&
 270             ConverterCache::get().inCache(orig_from, to_format))
 271                 return ConverterCache::get().copy(orig_from, to_format, to_file);
 272
 273         Graph::EdgePath edgepath = getPath(from_format, to_format);
 274         if (edgepath.empty()) {
 275                 if (conversionflags & try_default) {
 276                         // if no special converter defined, then we take the
 277                         // default one from ImageMagic.
 278                         string const from_ext = from_format.empty() ?
 279                                 getExtension(from_file.absFileName()) :
 280                                 formats.extension(from_format);
 281                         string const to_ext = formats.extension(to_format);
 282                         string const command =
 283                                 os::python() + ' ' +
 284                                 quoteName(libFileSearch("scripts", "convertDefault.py").toFilesystemEncoding()) +
 285                                 ' ' +
 286                                 quoteName(from_ext + ':' + from_file.toFilesystemEncoding()) +
 287                                 ' ' +
 288                                 quoteName(to_ext + ':' + to_file.toFilesystemEncoding());
 289                         LYXERR(Debug::FILES, "No converter defined! "
 290                                    "I use convertDefault.py:\n\t" << command);
 291                         Systemcall one;
 292                         one.startscript(Systemcall::Wait, command, buffer ?
 293                                         buffer->filePath() : string());
 294                         if (to_file.isReadableFile()) {
 295                                 if (conversionflags & try_cache)
 296                                         ConverterCache::get().add(orig_from,
 297                                                         to_format, to_file);
 298                                 return true;
 299                         }
 300                 }
 301
 302                 // only warn once per session and per file type
 303                 static std::map<string, string> warned;
 304                 if (warned.find(from_format) != warned.end() && warned.find(from_format)->second == to_format) {
 305                         return false;
 306                 }
 307                 warned.insert(make_pair(from_format, to_format));
 308
 309                 Alert::error(_("Cannot convert file"),
 310                              bformat(_("No information for converting %1$s "
 311                                                     "format files to %2$s.\n"
 312                                                     "Define a converter in the preferences."),
 313                                                         from_ascii(from_format), from_ascii(to_format)));
 314                 return false;
 315         }
 316
 317         // buffer is only invalid for importing, and then runparams is not
 318         // used anyway.
 319         OutputParams runparams(buffer ? &buffer->params().encoding() : 0);
 320         runparams.flavor = getFlavor(edgepath);
 321
 322         if (buffer) {
 323                 runparams.use_japanese = buffer->params().bufferFormat() == "platex";
 324                 runparams.use_indices = buffer->params().use_indices;
 325                 runparams.bibtex_command = (buffer->params().bibtex_command == "default") ?
 326                         string() : buffer->params().bibtex_command;
 327                 runparams.index_command = (buffer->params().index_command == "default") ?
 328                         string() : buffer->params().index_command;
 329         }
 330
 331         // Some converters (e.g. lilypond) can only output files to the
 332         // current directory, so we need to change the current directory.
 333         // This has the added benefit that all other files that may be
 334         // generated by the converter are deleted when LyX closes and do not
 335         // clutter the real working directory.
 336         // FIXME: This does not work if path is an UNC path on windows
 337         //        (bug 6127).
 338         string const path(onlyPath(from_file.absFileName()));
 339         // Prevent the compiler from optimizing away p
 340         FileName pp(path);
 341         PathChanger p(pp);
 342
 343         // empty the error list before any new conversion takes place.
 344         errorList.clear();
 345
 346         bool run_latex = false;
 347         string from_base = changeExtension(from_file.absFileName(), "");
 348         string to_base = changeExtension(to_file.absFileName(), "");
 349         FileName infile;
 350         FileName outfile = from_file;
 351         for (Graph::EdgePath::const_iterator cit = edgepath.begin();
 352              cit != edgepath.end(); ++cit) {
 353                 Converter const & conv = converterlist_[*cit];
 354                 bool dummy = conv.To->dummy() && conv.to != "program";
 355                 if (!dummy) {
 356                         LYXERR(Debug::FILES, "Converting from  "
 357                                << conv.from << " to " << conv.to);
 358                 }
 359                 infile = outfile;
 360                 outfile = FileName(conv.result_file.empty()
 361                         ? changeExtension(from_file.absFileName(), conv.To->extension())
 362                         : addName(subst(conv.result_dir,
 363                                         token_base, from_base),
 364                                   subst(conv.result_file,
 365                                         token_base, onlyFileName(from_base))));
 366
 367                 // if input and output files are equal, we use a
 368                 // temporary file as intermediary (JMarc)
 369                 FileName real_outfile;
 370                 if (!conv.result_file.empty())
 371                         real_outfile = FileName(changeExtension(from_file.absFileName(),
 372                                 conv.To->extension()));
 373                 if (outfile == infile) {
 374                         real_outfile = infile;
 375                         // when importing, a buffer does not necessarily exist
 376                         if (buffer)
 377                                 outfile = FileName(addName(buffer->temppath(), "tmpfile.out"));
 378                         else
 379                                 outfile = FileName(addName(package().temp_dir().absFileName(),
 380                                                    "tmpfile.out"));
 381                 }
 382
 383                 if (conv.latex) {
 384                         run_latex = true;
 385                         string command = conv.command;
 386                         command = subst(command, token_from, "");
 387                         command = subst(command, token_latex_encoding, buffer ?
 388                                 buffer->params().encoding().latexName() : string());
 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                                 string const command = (buffer && buffer->params().useNonTeXFonts) ?
 396                                         xelatex_command_ : latex_command_;
 397                                 LYXERR(Debug::FILES, "Running " << command
 398                                         << " to update aux file");
 399                                 if (!runLaTeX(*buffer, command, runparams, errorList))
 400                                         return false;
 401                         }
 402
 403                         // FIXME UNICODE
 404                         string const infile2 =
 405                                 to_utf8(makeRelPath(from_utf8(infile.absFileName()), from_utf8(path)));
 406                         string const outfile2 =
 407                                 to_utf8(makeRelPath(from_utf8(outfile.absFileName()), from_utf8(path)));
 408
 409                         string command = conv.command;
 410                         command = subst(command, token_from, quoteName(infile2));
 411                         command = subst(command, token_base, quoteName(from_base));
 412                         command = subst(command, token_to, quoteName(outfile2));
 413                         command = subst(command, token_path, quoteName(onlyPath(infile.absFileName())));
 414                         command = subst(command, token_orig_path, quoteName(onlyPath(orig_from.absFileName())));
 415                         command = subst(command, token_encoding, buffer ? buffer->params().encoding().iconvName() : string());
 416                         command = libScriptSearch(command);
 417
 418                         if (!conv.parselog.empty())
 419                                 command += " 2> " + quoteName(infile2 + ".out");
 420
 421                         if (conv.from == "dvi" && conv.to == "ps")
 422                                 command = add_options(command,
 423                                                       buffer->params().dvips_options());
 424                         else if (conv.from == "dvi" && prefixIs(conv.to, "pdf"))
 425                                 command = add_options(command,
 426                                                       dvipdfm_options(buffer->params()));
 427
 428                         LYXERR(Debug::FILES, "Calling " << command);
 429                         if (buffer)
 430                                 buffer->message(_("Executing command: ")
 431                                 + from_utf8(command));
 432
 433                         Systemcall one;
 434                         int res;
 435                         if (dummy) {
 436                                 res = one.startscript(Systemcall::DontWait,
 437                                         to_filesystem8bit(from_utf8(command)),
 438                                         buffer ? buffer->filePath() : string());
 439                                 // We're not waiting for the result, so we can't do anything
 440                                 // else here.
 441                         } else {
 442                                 res = one.startscript(Systemcall::Wait,
 443                                                 to_filesystem8bit(from_utf8(command)),
 444                                                 buffer ? buffer->filePath()
 445                                                        : string());
 446                                 if (!real_outfile.empty()) {
 447                                         Mover const & mover = getMover(conv.to);
 448                                         if (!mover.rename(outfile, real_outfile))
 449                                                 res = -1;
 450                                         else
 451                                                 LYXERR(Debug::FILES, "renaming file " << outfile
 452                                                         << " to " << real_outfile);
 453                                         // Finally, don't forget to tell any future
 454                                         // converters to use the renamed file...
 455                                         outfile = real_outfile;
 456                                 }
 457
 458                                 if (!conv.parselog.empty()) {
 459                                         string const logfile =  infile2 + ".log";
 460                                         string const script = libScriptSearch(conv.parselog);
 461                                         string const command2 = script +
 462                                                 " < " + quoteName(infile2 + ".out") +
 463                                                 " > " + quoteName(logfile);
 464                                         one.startscript(Systemcall::Wait,
 465                                                 to_filesystem8bit(from_utf8(command2)),
 466                                                 buffer->filePath());
 467                                         if (!scanLog(*buffer, command, makeAbsPath(logfile, path), errorList))
 468                                                 return false;
 469                                 }
 470                         }
 471
 472                         if (res) {
 473                                 if (conv.to == "program") {
 474                                         Alert::error(_("Build errors"),
 475                                                 _("There were errors during the build process."));
 476                                 } else {
 477 // FIXME: this should go out of here. For example, here we cannot say if
 478 // it is a document (.lyx) or something else. Same goes for elsewhere.
 479                                         Alert::error(_("Cannot convert file"),
 480                                                 bformat(_("An error occurred while running:\n%1$s"),
 481                                                 wrapParas(from_utf8(command))));
 482                                 }
 483                                 return false;
 484                         }
 485                 }
 486         }
 487
 488         Converter const & conv = converterlist_[edgepath.back()];
 489         if (conv.To->dummy())
 490                 return true;
 491
 492         if (!conv.result_dir.empty()) {
 493                 // The converter has put the file(s) in a directory.
 494                 // In this case we ignore the given to_file.
 495                 if (from_base != to_base) {
 496                         string const from = subst(conv.result_dir,
 497                                             token_base, from_base);
 498                         string const to = subst(conv.result_dir,
 499                                           token_base, to_base);
 500                         Mover const & mover = getMover(conv.from);
 501                         if (!mover.rename(FileName(from), FileName(to))) {
 502                                 Alert::error(_("Cannot convert file"),
 503                                         bformat(_("Could not move a temporary directory from %1$s to %2$s."),
 504                                                 from_utf8(from), from_utf8(to)));
 505                                 return false;
 506                         }
 507                 }
 508                 return true;
 509         } else {
 510                 if (conversionflags & try_cache)
 511                         ConverterCache::get().add(orig_from, to_format, outfile);
 512                 return move(conv.to, outfile, to_file, conv.latex);
 513         }
 514 }
 515
 516
 517 bool Converters::move(string const & fmt,
 518                       FileName const & from, FileName const & to, bool copy)
 519 {
 520         if (from == to)
 521                 return true;
 522
 523         bool no_errors = true;
 524         string const path = onlyPath(from.absFileName());
 525         string const base = onlyFileName(removeExtension(from.absFileName()));
 526         string const to_base = removeExtension(to.absFileName());
 527         string const to_extension = getExtension(to.absFileName());
 528
 529         support::FileNameList const files = FileName(path).dirList(getExtension(from.absFileName()));
 530         for (support::FileNameList::const_iterator it = files.begin();
 531              it != files.end(); ++it) {
 532                 string const from2 = it->absFileName();
 533                 string const file2 = onlyFileName(from2);
 534                 if (prefixIs(file2, base)) {
 535                         string const to2 = changeExtension(
 536                                 to_base + file2.substr(base.length()),
 537                                 to_extension);
 538                         LYXERR(Debug::FILES, "moving " << from2 << " to " << to2);
 539
 540                         Mover const & mover = getMover(fmt);
 541                         bool const moved = copy
 542                                 ? mover.copy(*it, FileName(to2))
 543                                 : mover.rename(*it, FileName(to2));
 544                         if (!moved && no_errors) {
 545                                 Alert::error(_("Cannot convert file"),
 546                                         bformat(copy ?
 547                                                 _("Could not copy a temporary file from %1$s to %2$s.") :
 548                                                 _("Could not move a temporary file from %1$s to %2$s."),
 549                                                 from_utf8(from2), from_utf8(to2)));
 550                                 no_errors = false;
 551                         }
 552                 }
 553         }
 554         return no_errors;
 555 }
 556
 557
 558 bool Converters::formatIsUsed(string const & format)
 559 {
 560         ConverterList::const_iterator cit = converterlist_.begin();
 561         ConverterList::const_iterator end = converterlist_.end();
 562         for (; cit != end; ++cit) {
 563                 if (cit->from == format || cit->to == format)
 564                         return true;
 565         }
 566         return false;
 567 }
 568
 569
 570 bool Converters::scanLog(Buffer const & buffer, string const & /*command*/,
 571                          FileName const & filename, ErrorList & errorList)
 572 {
 573         OutputParams runparams(0);
 574         runparams.flavor = OutputParams::LATEX;
 575         LaTeX latex("", runparams, filename);
 576         TeXErrors terr;
 577         int const result = latex.scanLogFile(terr);
 578
 579         if (result & LaTeX::ERRORS)
 580                 buffer.bufferErrors(terr, errorList);
 581
 582         return true;
 583 }
 584
 585
 586 namespace {
 587
 588 class ShowMessage
 589         : public boost::signals::trackable {
 590 public:
 591         ShowMessage(Buffer const & b) : buffer_(b) {}
 592         void operator()(docstring const & msg) const { buffer_.message(msg); }
 593 private:
 594         Buffer const & buffer_;
 595 };
 596
 597 }
 598
 599
 600 bool Converters::runLaTeX(Buffer const & buffer, string const & command,
 601                           OutputParams const & runparams, ErrorList & errorList)
 602 {
 603         buffer.setBusy(true);
 604         buffer.message(_("Running LaTeX..."));
 605
 606         runparams.document_language = buffer.params().language->babel();
 607
 608         // do the LaTeX run(s)
 609         string const name = buffer.latexName();
 610         LaTeX latex(command, runparams, FileName(makeAbsPath(name)),
 611                     buffer.filePath());
 612         TeXErrors terr;
 613         ShowMessage show(buffer);
 614         latex.message.connect(show);
 615         int const result = latex.run(terr);
 616
 617         if (result & LaTeX::ERRORS)
 618                 buffer.bufferErrors(terr, errorList);
 619
 620         // check return value from latex.run().
 621         if ((result & LaTeX::NO_LOGFILE) && !buffer.isClone()) {
 622                 docstring const str =
 623                         bformat(_("LaTeX did not run successfully. "
 624                                                "Additionally, LyX could not locate "
 625                                                "the LaTeX log %1$s."), from_utf8(name));
 626                 Alert::error(_("LaTeX failed"), str);
 627         } else if ((result & LaTeX::NO_OUTPUT) && !buffer.isClone()) {
 628                 Alert::warning(_("Output is empty"),
 629                                _("An empty output file was generated."));
 630         }
 631
 632
 633         buffer.setBusy(false);
 634
 635         int const ERROR_MASK =
 636                         LaTeX::NO_LOGFILE |
 637                         LaTeX::ERRORS |
 638                         LaTeX::NO_OUTPUT;
 639
 640         return (result & ERROR_MASK) == 0;
 641
 642 }
 643
 644
 645
 646 void Converters::buildGraph()
 647 {
 648         // clear graph's data structures
 649         G_.init(formats.size());
 650         // each of the converters knows how to convert one format to another
 651         // so, for each of them, we create an arrow on the graph, going from
 652         // the one to the other
 653         ConverterList::iterator it = converterlist_.begin();
 654         ConverterList::iterator const end = converterlist_.end();
 655         for (; it != end ; ++it) {
 656                 int const from = formats.getNumber(it->from);
 657                 int const to   = formats.getNumber(it->to);
 658                 G_.addEdge(from, to);
 659         }
 660 }
 661
 662
 663 vector<Format const *> const
 664 Converters::intToFormat(vector<int> const & input)
 665 {
 666         vector<Format const *> result(input.size());
 667
 668         vector<int>::const_iterator it = input.begin();
 669         vector<int>::const_iterator const end = input.end();
 670         vector<Format const *>::iterator rit = result.begin();
 671         for ( ; it != end; ++it, ++rit) {
 672                 *rit = &formats.get(*it);
 673         }
 674         return result;
 675 }
 676
 677
 678 vector<Format const *> const
 679 Converters::getReachableTo(string const & target, bool const clear_visited)
 680 {
 681         vector<int> const & reachablesto =
 682                 G_.getReachableTo(formats.getNumber(target), clear_visited);
 683
 684         return intToFormat(reachablesto);
 685 }
 686
 687
 688 vector<Format const *> const
 689 Converters::getReachable(string const & from, bool const only_viewable,
 690                          bool const clear_visited, set<string> const & excludes)
 691 {
 692         set<int> excluded_numbers;;
 693
 694         set<string>::const_iterator sit = excludes.begin();
 695         set<string>::const_iterator const end = excludes.end();
 696         for (; sit != end; ++sit)
 697                 excluded_numbers.insert(formats.getNumber(*sit));
 698
 699         vector<int> const & reachables =
 700                 G_.getReachable(formats.getNumber(from),
 701                                 only_viewable,
 702                                 clear_visited,
 703                                 excluded_numbers);
 704
 705         return intToFormat(reachables);
 706 }
 707
 708
 709 bool Converters::isReachable(string const & from, string const & to)
 710 {
 711         return G_.isReachable(formats.getNumber(from),
 712                               formats.getNumber(to));
 713 }
 714
 715
 716 Graph::EdgePath Converters::getPath(string const & from, string const & to)
 717 {
 718         return G_.getPath(formats.getNumber(from),
 719                           formats.getNumber(to));
 720 }
 721
 722
 723 vector<Format const *> Converters::importableFormats()
 724 {
 725         vector<string> l = loaders();
 726         vector<Format const *> result = getReachableTo(l[0], true);
 727         vector<string>::const_iterator it = l.begin() + 1;
 728         vector<string>::const_iterator en = l.end();
 729         for (; it != en; ++it) {
 730                 vector<Format const *> r = getReachableTo(*it, false);
 731                 result.insert(result.end(), r.begin(), r.end());
 732         }
 733         return result;
 734 }
 735
 736
 737 vector<Format const *> Converters::exportableFormats(bool only_viewable)
 738 {
 739         vector<string> s = savers();
 740         vector<Format const *> result = getReachable(s[0], only_viewable, true);
 741         vector<string>::const_iterator it = s.begin() + 1;
 742         vector<string>::const_iterator en = s.end();
 743         for (; it != en; ++it) {
 744                 vector<Format const *> r =
 745                         getReachable(*it, only_viewable, false);
 746                 result.insert(result.end(), r.begin(), r.end());
 747         }
 748         return result;
 749 }
 750
 751
 752 vector<string> Converters::loaders() const
 753 {
 754         vector<string> v;
 755         v.push_back("lyx");
 756         v.push_back("text");
 757         v.push_back("textparagraph");
 758         return v;
 759 }
 760
 761
 762 vector<string> Converters::savers() const
 763 {
 764         vector<string> v;
 765         v.push_back("docbook");
 766         v.push_back("latex");
 767         v.push_back("literate");
 768         v.push_back("luatex");
 769         v.push_back("dviluatex");
 770         v.push_back("lyx");
 771         v.push_back("xhtml");
 772         v.push_back("pdflatex");
 773         v.push_back("platex");
 774         v.push_back("text");
 775         v.push_back("xetex");
 776         return v;
 777 }
 778
 779
 780 } // namespace lyx