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 bool operator<(Converter const & a, Converter const & b)
 135 {
 136         // use the compare_ascii_no_case instead of compare_no_case,
 137         // because in turkish, 'i' is not the lowercase version of 'I',
 138         // and thus turkish locale breaks parsing of tags.
 139         int const i = compare_ascii_no_case(a.From->prettyname(),
 140                                             b.From->prettyname());
 141         if (i == 0)
 142                 return compare_ascii_no_case(a.To->prettyname(),
 143                                              b.To->prettyname()) < 0;
 144         else
 145                 return i < 0;
 146 }
 147
 148
 149 Converter const * Converters::getConverter(string const & from,
 150                                             string const & to) const
 151 {
 152         ConverterList::const_iterator const cit =
 153                 find_if(converterlist_.begin(), converterlist_.end(),
 154                         ConverterEqual(from, to));
 155         if (cit != converterlist_.end())
 156                 return &(*cit);
 157         else
 158                 return 0;
 159 }
 160
 161
 162 int Converters::getNumber(string const & from, string const & to) const
 163 {
 164         ConverterList::const_iterator const cit =
 165                 find_if(converterlist_.begin(), converterlist_.end(),
 166                         ConverterEqual(from, to));
 167         if (cit != converterlist_.end())
 168                 return distance(converterlist_.begin(), cit);
 169         else
 170                 return -1;
 171 }
 172
 173
 174 void Converters::add(string const & from, string const & to,
 175                      string const & command, string const & flags)
 176 {
 177         formats.add(from);
 178         formats.add(to);
 179         ConverterList::iterator it = find_if(converterlist_.begin(),
 180                                              converterlist_.end(),
 181                                              ConverterEqual(from , to));
 182
 183         Converter converter(from, to, command, flags);
 184         if (it != converterlist_.end() && !flags.empty() && flags[0] == '*') {
 185                 converter = *it;
 186                 converter.command = command;
 187                 converter.flags = flags;
 188         }
 189         converter.readFlags();
 190
 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         if (converter.latex
 195             && (latex_command_.empty() || converter.latex_flavor == "latex"))
 196                 latex_command_ = subst(command, token_from, "");
 197         // Similarly, set xelatex_command to xelatex.
 198         if (converter.latex
 199             && (xelatex_command_.empty() || converter.latex_flavor == "xelatex"))
 200                 xelatex_command_ = subst(command, token_from, "");
 201
 202         if (it == converterlist_.end()) {
 203                 converterlist_.push_back(converter);
 204         } else {
 205                 converter.From = it->From;
 206                 converter.To = it->To;
 207                 *it = converter;
 208         }
 209 }
 210
 211
 212 void Converters::erase(string const & from, string const & to)
 213 {
 214         ConverterList::iterator const it =
 215                 find_if(converterlist_.begin(),
 216                         converterlist_.end(),
 217                         ConverterEqual(from, to));
 218         if (it != converterlist_.end())
 219                 converterlist_.erase(it);
 220 }
 221
 222
 223 // This method updates the pointers From and To in all the converters.
 224 // The code is not very efficient, but it doesn't matter as the number
 225 // of formats and converters is small.
 226 // Furthermore, this method is called only on startup, or after
 227 // adding/deleting a format in FormPreferences (the latter calls can be
 228 // eliminated if the formats in the Formats class are stored using a map or
 229 // a list (instead of a vector), but this will cause other problems).
 230 void Converters::update(Formats const & formats)
 231 {
 232         ConverterList::iterator it = converterlist_.begin();
 233         ConverterList::iterator end = converterlist_.end();
 234         for (; it != end; ++it) {
 235                 it->From = formats.getFormat(it->from);
 236                 it->To = formats.getFormat(it->to);
 237         }
 238 }
 239
 240
 241 // This method updates the pointers From and To in the last converter.
 242 // It is called when adding a new converter in FormPreferences
 243 void Converters::updateLast(Formats const & formats)
 244 {
 245         if (converterlist_.begin() != converterlist_.end()) {
 246                 ConverterList::iterator it = converterlist_.end() - 1;
 247                 it->From = formats.getFormat(it->from);
 248                 it->To = formats.getFormat(it->to);
 249         }
 250 }
 251
 252
 253 void Converters::sort()
 254 {
 255         std::sort(converterlist_.begin(), converterlist_.end());
 256 }
 257
 258
 259 OutputParams::FLAVOR Converters::getFlavor(Graph::EdgePath const & path)
 260 {
 261         for (Graph::EdgePath::const_iterator cit = path.begin();
 262              cit != path.end(); ++cit) {
 263                 Converter const & conv = converterlist_[*cit];
 264                 if (conv.latex)
 265                         if (conv.latex_flavor == "xelatex")
 266                                 return OutputParams::XETEX;
 267                         if (conv.latex_flavor == "lualatex")
 268                                 return OutputParams::LUATEX;
 269                         if (conv.latex_flavor == "dvilualatex")
 270                                 return OutputParams::DVILUATEX;
 271                         if (conv.latex_flavor == "pdflatex")
 272                                 return OutputParams::PDFLATEX;
 273                 if (conv.xml)
 274                         return OutputParams::XML;
 275         }
 276         return OutputParams::LATEX;
 277 }
 278
 279
 280 bool Converters::convert(Buffer const * buffer,
 281                          FileName const & from_file, FileName const & to_file,
 282                          FileName const & orig_from,
 283                          string const & from_format, string const & to_format,
 284                          ErrorList & errorList, int conversionflags)
 285 {
 286         if (from_format == to_format)
 287                 return move(from_format, from_file, to_file, false);
 288
 289         if ((conversionflags & try_cache) &&
 290             ConverterCache::get().inCache(orig_from, to_format))
 291                 return ConverterCache::get().copy(orig_from, to_format, to_file);
 292
 293         Graph::EdgePath edgepath = getPath(from_format, to_format);
 294         if (edgepath.empty()) {
 295                 if (conversionflags & try_default) {
 296                         // if no special converter defined, then we take the
 297                         // default one from ImageMagic.
 298                         string const from_ext = from_format.empty() ?
 299                                 getExtension(from_file.absFileName()) :
 300                                 formats.extension(from_format);
 301                         string const to_ext = formats.extension(to_format);
 302                         string const command =
 303                                 os::python() + ' ' +
 304                                 quoteName(libFileSearch("scripts", "convertDefault.py").toFilesystemEncoding()) +
 305                                 ' ' +
 306                                 quoteName(from_ext + ':' + from_file.toFilesystemEncoding()) +
 307                                 ' ' +
 308                                 quoteName(to_ext + ':' + to_file.toFilesystemEncoding());
 309                         LYXERR(Debug::FILES, "No converter defined! "
 310                                    "I use convertDefault.py:\n\t" << command);
 311                         Systemcall one;
 312                         one.startscript(Systemcall::Wait, command, buffer ?
 313                                         buffer->filePath() : string());
 314                         if (to_file.isReadableFile()) {
 315                                 if (conversionflags & try_cache)
 316                                         ConverterCache::get().add(orig_from,
 317                                                         to_format, to_file);
 318                                 return true;
 319                         }
 320                 }
 321
 322                 // only warn once per session and per file type
 323                 static std::map<string, string> warned;
 324                 if (warned.find(from_format) != warned.end() && warned.find(from_format)->second == to_format) {
 325                         return false;
 326                 }
 327                 warned.insert(make_pair(from_format, to_format));
 328
 329                 Alert::error(_("Cannot convert file"),
 330                              bformat(_("No information for converting %1$s "
 331                                                     "format files to %2$s.\n"
 332                                                     "Define a converter in the preferences."),
 333                                                         from_ascii(from_format), from_ascii(to_format)));
 334                 return false;
 335         }
 336
 337         // buffer is only invalid for importing, and then runparams is not
 338         // used anyway.
 339         OutputParams runparams(buffer ? &buffer->params().encoding() : 0);
 340         runparams.flavor = getFlavor(edgepath);
 341
 342         if (buffer) {
 343                 runparams.use_japanese = buffer->params().bufferFormat() == "platex";
 344                 runparams.use_indices = buffer->params().use_indices;
 345                 runparams.bibtex_command = (buffer->params().bibtex_command == "default") ?
 346                         string() : buffer->params().bibtex_command;
 347                 runparams.index_command = (buffer->params().index_command == "default") ?
 348                         string() : buffer->params().index_command;
 349         }
 350
 351         // Some converters (e.g. lilypond) can only output files to the
 352         // current directory, so we need to change the current directory.
 353         // This has the added benefit that all other files that may be
 354         // generated by the converter are deleted when LyX closes and do not
 355         // clutter the real working directory.
 356         string const path(onlyPath(from_file.absFileName()));
 357         // Prevent the compiler from optimizing away p
 358         FileName pp(path);
 359         PathChanger p(pp);
 360
 361         // empty the error list before any new conversion takes place.
 362         errorList.clear();
 363
 364         bool run_latex = false;
 365         string from_base = changeExtension(from_file.absFileName(), "");
 366         string to_base = changeExtension(to_file.absFileName(), "");
 367         FileName infile;
 368         FileName outfile = from_file;
 369         for (Graph::EdgePath::const_iterator cit = edgepath.begin();
 370              cit != edgepath.end(); ++cit) {
 371                 Converter const & conv = converterlist_[*cit];
 372                 bool dummy = conv.To->dummy() && conv.to != "program";
 373                 if (!dummy) {
 374                         LYXERR(Debug::FILES, "Converting from  "
 375                                << conv.from << " to " << conv.to);
 376                 }
 377                 infile = outfile;
 378                 outfile = FileName(conv.result_dir.empty()
 379                         ? changeExtension(from_file.absFileName(), conv.To->extension())
 380                         : addName(subst(conv.result_dir,
 381                                         token_base, from_base),
 382                                   subst(conv.result_file,
 383                                         token_base, onlyFileName(from_base))));
 384
 385                 // if input and output files are equal, we use a
 386                 // temporary file as intermediary (JMarc)
 387                 FileName real_outfile;
 388                 if (outfile == infile) {
 389                         real_outfile = infile;
 390                         // when importing, a buffer does not necessarily exist
 391                         if (buffer)
 392                                 outfile = FileName(addName(buffer->temppath(), "tmpfile.out"));
 393                         else
 394                                 outfile = FileName(addName(package().temp_dir().absFileName(),
 395                                                    "tmpfile.out"));
 396                 }
 397
 398                 if (conv.latex) {
 399                         run_latex = true;
 400                         string const command = subst(conv.command, token_from, "");
 401                         LYXERR(Debug::FILES, "Running " << command);
 402                         if (!runLaTeX(*buffer, command, runparams, errorList))
 403                                 return false;
 404                 } else {
 405                         if (conv.need_aux && !run_latex
 406                             && !latex_command_.empty()) {
 407                                 string const command = (buffer && buffer->params().useNonTeXFonts) ?
 408                                         xelatex_command_ : latex_command_;
 409                                 LYXERR(Debug::FILES, "Running " << command
 410                                         << " to update aux file");
 411                                 if (!runLaTeX(*buffer, command, runparams, errorList))
 412                                         return false;
 413                         }
 414
 415                         // FIXME UNICODE
 416                         string const infile2 =
 417                                 to_utf8(makeRelPath(from_utf8(infile.absFileName()), from_utf8(path)));
 418                         string const outfile2 =
 419                                 to_utf8(makeRelPath(from_utf8(outfile.absFileName()), from_utf8(path)));
 420
 421                         string command = conv.command;
 422                         command = subst(command, token_from, quoteName(infile2));
 423                         command = subst(command, token_base, quoteName(from_base));
 424                         command = subst(command, token_to, quoteName(outfile2));
 425                         command = subst(command, token_path, quoteName(onlyPath(infile.absFileName())));
 426                         command = subst(command, token_orig_path, quoteName(onlyPath(orig_from.absFileName())));
 427                         command = subst(command, token_encoding, buffer ? buffer->params().encoding().iconvName() : string());
 428                         command = libScriptSearch(command);
 429
 430                         if (!conv.parselog.empty())
 431                                 command += " 2> " + quoteName(infile2 + ".out");
 432
 433                         if (conv.from == "dvi" && conv.to == "ps")
 434                                 command = add_options(command,
 435                                                       buffer->params().dvips_options());
 436                         else if (conv.from == "dvi" && prefixIs(conv.to, "pdf"))
 437                                 command = add_options(command,
 438                                                       dvipdfm_options(buffer->params()));
 439
 440                         LYXERR(Debug::FILES, "Calling " << command);
 441                         if (buffer)
 442                                 buffer->message(_("Executing command: ")
 443                                 + from_utf8(command));
 444
 445                         Systemcall one;
 446                         int res;
 447                         if (dummy) {
 448                                 res = one.startscript(Systemcall::DontWait,
 449                                         to_filesystem8bit(from_utf8(command)),
 450                                         buffer ? buffer->filePath() : string());
 451                                 // We're not waiting for the result, so we can't do anything
 452                                 // else here.
 453                         } else {
 454                                 res = one.startscript(Systemcall::Wait,
 455                                                 to_filesystem8bit(from_utf8(command)),
 456                                                 buffer ? buffer->filePath()
 457                                                        : string());
 458                                 if (!real_outfile.empty()) {
 459                                         Mover const & mover = getMover(conv.to);
 460                                         if (!mover.rename(outfile, real_outfile))
 461                                                 res = -1;
 462                                         else
 463                                                 LYXERR(Debug::FILES, "renaming file " << outfile
 464                                                         << " to " << real_outfile);
 465                                         // Finally, don't forget to tell any future
 466                                         // converters to use the renamed file...
 467                                         outfile = real_outfile;
 468                                 }
 469
 470                                 if (!conv.parselog.empty()) {
 471                                         string const logfile =  infile2 + ".log";
 472                                         string const script = libScriptSearch(conv.parselog);
 473                                         string const command2 = script +
 474                                                 " < " + quoteName(infile2 + ".out") +
 475                                                 " > " + quoteName(logfile);
 476                                         one.startscript(Systemcall::Wait,
 477                                                 to_filesystem8bit(from_utf8(command2)),
 478                                                 buffer->filePath());
 479                                         if (!scanLog(*buffer, command, makeAbsPath(logfile, path), errorList))
 480                                                 return false;
 481                                 }
 482                         }
 483
 484                         if (res) {
 485                                 if (conv.to == "program") {
 486                                         Alert::error(_("Build errors"),
 487                                                 _("There were errors during the build process."));
 488                                 } else {
 489 // FIXME: this should go out of here. For example, here we cannot say if
 490 // it is a document (.lyx) or something else. Same goes for elsewhere.
 491                                         Alert::error(_("Cannot convert file"),
 492                                                 bformat(_("An error occurred while running:\n%1$s"),
 493                                                 wrapParas(from_utf8(command))));
 494                                 }
 495                                 return false;
 496                         }
 497                 }
 498         }
 499
 500         Converter const & conv = converterlist_[edgepath.back()];
 501         if (conv.To->dummy())
 502                 return true;
 503
 504         if (!conv.result_dir.empty()) {
 505                 // The converter has put the file(s) in a directory.
 506                 // In this case we ignore the given to_file.
 507                 if (from_base != to_base) {
 508                         string const from = subst(conv.result_dir,
 509                                             token_base, from_base);
 510                         string const to = subst(conv.result_dir,
 511                                           token_base, to_base);
 512                         Mover const & mover = getMover(conv.from);
 513                         if (!mover.rename(FileName(from), FileName(to))) {
 514                                 Alert::error(_("Cannot convert file"),
 515                                         bformat(_("Could not move a temporary directory from %1$s to %2$s."),
 516                                                 from_utf8(from), from_utf8(to)));
 517                                 return false;
 518                         }
 519                 }
 520                 return true;
 521         } else {
 522                 if (conversionflags & try_cache)
 523                         ConverterCache::get().add(orig_from, to_format, outfile);
 524                 return move(conv.to, outfile, to_file, conv.latex);
 525         }
 526 }
 527
 528
 529 bool Converters::move(string const & fmt,
 530                       FileName const & from, FileName const & to, bool copy)
 531 {
 532         if (from == to)
 533                 return true;
 534
 535         bool no_errors = true;
 536         string const path = onlyPath(from.absFileName());
 537         string const base = onlyFileName(removeExtension(from.absFileName()));
 538         string const to_base = removeExtension(to.absFileName());
 539         string const to_extension = getExtension(to.absFileName());
 540
 541         support::FileNameList const files = FileName(path).dirList(getExtension(from.absFileName()));
 542         for (support::FileNameList::const_iterator it = files.begin();
 543              it != files.end(); ++it) {
 544                 string const from2 = it->absFileName();
 545                 string const file2 = onlyFileName(from2);
 546                 if (prefixIs(file2, base)) {
 547                         string const to2 = changeExtension(
 548                                 to_base + file2.substr(base.length()),
 549                                 to_extension);
 550                         LYXERR(Debug::FILES, "moving " << from2 << " to " << to2);
 551
 552                         Mover const & mover = getMover(fmt);
 553                         bool const moved = copy
 554                                 ? mover.copy(*it, FileName(to2))
 555                                 : mover.rename(*it, FileName(to2));
 556                         if (!moved && no_errors) {
 557                                 Alert::error(_("Cannot convert file"),
 558                                         bformat(copy ?
 559                                                 _("Could not copy a temporary file from %1$s to %2$s.") :
 560                                                 _("Could not move a temporary file from %1$s to %2$s."),
 561                                                 from_utf8(from2), from_utf8(to2)));
 562                                 no_errors = false;
 563                         }
 564                 }
 565         }
 566         return no_errors;
 567 }
 568
 569
 570 bool Converters::formatIsUsed(string const & format)
 571 {
 572         ConverterList::const_iterator cit = converterlist_.begin();
 573         ConverterList::const_iterator end = converterlist_.end();
 574         for (; cit != end; ++cit) {
 575                 if (cit->from == format || cit->to == format)
 576                         return true;
 577         }
 578         return false;
 579 }
 580
 581
 582 bool Converters::scanLog(Buffer const & buffer, string const & /*command*/,
 583                          FileName const & filename, ErrorList & errorList)
 584 {
 585         OutputParams runparams(0);
 586         runparams.flavor = OutputParams::LATEX;
 587         LaTeX latex("", runparams, filename);
 588         TeXErrors terr;
 589         int const result = latex.scanLogFile(terr);
 590
 591         if (result & LaTeX::ERRORS)
 592                 buffer.bufferErrors(terr, errorList);
 593
 594         return true;
 595 }
 596
 597
 598 namespace {
 599
 600 class ShowMessage
 601         : public boost::signals::trackable {
 602 public:
 603         ShowMessage(Buffer const & b) : buffer_(b) {}
 604         void operator()(docstring const & msg) const { buffer_.message(msg); }
 605 private:
 606         Buffer const & buffer_;
 607 };
 608
 609 }
 610
 611
 612 bool Converters::runLaTeX(Buffer const & buffer, string const & command,
 613                           OutputParams const & runparams, ErrorList & errorList)
 614 {
 615         buffer.setBusy(true);
 616         buffer.message(_("Running LaTeX..."));
 617
 618         runparams.document_language = buffer.params().language->babel();
 619
 620         // do the LaTeX run(s)
 621         string const name = buffer.latexName();
 622         LaTeX latex(command, runparams, FileName(makeAbsPath(name)),
 623                     buffer.filePath());
 624         TeXErrors terr;
 625         ShowMessage show(buffer);
 626         latex.message.connect(show);
 627         int const result = latex.run(terr);
 628
 629         if (result & LaTeX::ERRORS)
 630                 buffer.bufferErrors(terr, errorList);
 631
 632         // check return value from latex.run().
 633         if ((result & LaTeX::NO_LOGFILE) && !buffer.isClone()) {
 634                 docstring const str =
 635                         bformat(_("LaTeX did not run successfully. "
 636                                                "Additionally, LyX could not locate "
 637                                                "the LaTeX log %1$s."), from_utf8(name));
 638                 Alert::error(_("LaTeX failed"), str);
 639         } else if ((result & LaTeX::NO_OUTPUT) && !buffer.isClone()) {
 640                 Alert::warning(_("Output is empty"),
 641                                _("An empty output file was generated."));
 642         }
 643
 644
 645         buffer.setBusy(false);
 646
 647         int const ERROR_MASK =
 648                         LaTeX::NO_LOGFILE |
 649                         LaTeX::ERRORS |
 650                         LaTeX::NO_OUTPUT;
 651
 652         return (result & ERROR_MASK) == 0;
 653
 654 }
 655
 656
 657
 658 void Converters::buildGraph()
 659 {
 660         // clear graph's data structures
 661         G_.init(formats.size());
 662         // each of the converters knows how to convert one format to another
 663         // so, for each of them, we create an arrow on the graph, going from
 664         // the one to the other
 665         ConverterList::iterator it = converterlist_.begin();
 666         ConverterList::iterator const end = converterlist_.end();
 667         for (; it != end ; ++it) {
 668                 int const from = formats.getNumber(it->from);
 669                 int const to   = formats.getNumber(it->to);
 670                 G_.addEdge(from, to);
 671         }
 672 }
 673
 674
 675 vector<Format const *> const
 676 Converters::intToFormat(vector<int> const & input)
 677 {
 678         vector<Format const *> result(input.size());
 679
 680         vector<int>::const_iterator it = input.begin();
 681         vector<int>::const_iterator const end = input.end();
 682         vector<Format const *>::iterator rit = result.begin();
 683         for ( ; it != end; ++it, ++rit) {
 684                 *rit = &formats.get(*it);
 685         }
 686         return result;
 687 }
 688
 689
 690 vector<Format const *> const
 691 Converters::getReachableTo(string const & target, bool const clear_visited)
 692 {
 693         vector<int> const & reachablesto =
 694                 G_.getReachableTo(formats.getNumber(target), clear_visited);
 695
 696         return intToFormat(reachablesto);
 697 }
 698
 699
 700 vector<Format const *> const
 701 Converters::getReachable(string const & from, bool const only_viewable,
 702                          bool const clear_visited, set<string> const & excludes)
 703 {
 704         set<int> excluded_numbers;;
 705
 706         set<string>::const_iterator sit = excludes.begin();
 707         set<string>::const_iterator const end = excludes.end();
 708         for (; sit != end; ++sit)
 709                 excluded_numbers.insert(formats.getNumber(*sit));
 710
 711         vector<int> const & reachables =
 712                 G_.getReachable(formats.getNumber(from),
 713                                 only_viewable,
 714                                 clear_visited,
 715                                 excluded_numbers);
 716
 717         return intToFormat(reachables);
 718 }
 719
 720
 721 bool Converters::isReachable(string const & from, string const & to)
 722 {
 723         return G_.isReachable(formats.getNumber(from),
 724                               formats.getNumber(to));
 725 }
 726
 727
 728 Graph::EdgePath Converters::getPath(string const & from, string const & to)
 729 {
 730         return G_.getPath(formats.getNumber(from),
 731                           formats.getNumber(to));
 732 }
 733
 734
 735 vector<Format const *> Converters::importableFormats()
 736 {
 737         vector<string> l = loaders();
 738         vector<Format const *> result = getReachableTo(l[0], true);
 739         vector<string>::const_iterator it = l.begin() + 1;
 740         vector<string>::const_iterator en = l.end();
 741         for (; it != en; ++it) {
 742                 vector<Format const *> r = getReachableTo(*it, false);
 743                 result.insert(result.end(), r.begin(), r.end());
 744         }
 745         return result;
 746 }
 747
 748
 749 vector<Format const *> Converters::exportableFormats(bool only_viewable)
 750 {
 751         vector<string> s = savers();
 752         vector<Format const *> result = getReachable(s[0], only_viewable, true);
 753         vector<string>::const_iterator it = s.begin() + 1;
 754         vector<string>::const_iterator en = s.end();
 755         for (; it != en; ++it) {
 756                 vector<Format const *> r =
 757                         getReachable(*it, only_viewable, false);
 758                 result.insert(result.end(), r.begin(), r.end());
 759         }
 760         return result;
 761 }
 762
 763
 764 vector<string> Converters::loaders() const
 765 {
 766         vector<string> v;
 767         v.push_back("lyx");
 768         v.push_back("text");
 769         v.push_back("textparagraph");
 770         return v;
 771 }
 772
 773
 774 vector<string> Converters::savers() const
 775 {
 776         vector<string> v;
 777         v.push_back("docbook");
 778         v.push_back("latex");
 779         v.push_back("literate");
 780         v.push_back("luatex");
 781         v.push_back("dviluatex");
 782         v.push_back("lyx");
 783         v.push_back("xhtml");
 784         v.push_back("pdflatex");
 785         v.push_back("platex");
 786         v.push_back("text");
 787         v.push_back("xetex");
 788         return v;
 789 }
 790
 791
 792 } // namespace lyx