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