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