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("$$r");
  53 string const token_orig_from("$$f");
  54 string const token_encoding("$$e");
  55 string const token_latex_encoding("$$E");
  56
  57
  58 string const add_options(string const & command, string const & options)
  59 {
  60         string head;
  61         string const tail = split(command, head, ' ');
  62         return head + ' ' + options + ' ' + tail;
  63 }
  64
  65
  66 string const dvipdfm_options(BufferParams const & bp)
  67 {
  68         string result;
  69
  70         if (bp.papersize != PAPER_CUSTOM) {
  71                 string const paper_size = bp.paperSizeName(BufferParams::DVIPDFM);
  72                 if (!paper_size.empty())
  73                         result = "-p "+ paper_size;
  74
  75                 if (bp.orientation == ORIENTATION_LANDSCAPE)
  76                         result += " -l";
  77         }
  78
  79         return result;
  80 }
  81
  82
  83 class ConverterEqual {
  84 public:
  85         ConverterEqual(string const & from, string const & to)
  86                 : from_(from), to_(to) {}
  87         bool operator()(Converter const & c) const {
  88                 return c.from == from_ && c.to == to_;
  89         }
  90 private:
  91         string const from_;
  92         string const to_;
  93 };
  94
  95 } // namespace anon
  96
  97
  98 Converter::Converter(string const & f, string const & t,
  99                      string const & c, string const & l)
 100         : from(f), to(t), command(c), flags(l),
 101           From(0), To(0), latex(false), xml(false),
 102           need_aux(false)
 103 {}
 104
 105
 106 void Converter::readFlags()
 107 {
 108         string flag_list(flags);
 109         while (!flag_list.empty()) {
 110                 string flag_name, flag_value;
 111                 flag_list = split(flag_list, flag_value, ',');
 112                 flag_value = split(flag_value, flag_name, '=');
 113                 if (flag_name == "latex") {
 114                         latex = true;
 115                         latex_flavor = flag_value.empty() ?
 116                                 "latex" : flag_value;
 117                 } else if (flag_name == "xml")
 118                         xml = true;
 119                 else if (flag_name == "needaux")
 120                         need_aux = true;
 121                 else if (flag_name == "resultdir")
 122                         result_dir = (flag_value.empty())
 123                                 ? token_base : flag_value;
 124                 else if (flag_name == "resultfile")
 125                         result_file = flag_value;
 126                 else if (flag_name == "parselog")
 127                         parselog = flag_value;
 128         }
 129         if (!result_dir.empty() && result_file.empty())
 130                 result_file = "index." + formats.extension(to);
 131         //if (!contains(command, token_from))
 132         //      latex = true;
 133 }
 134
 135
 136 Converter const * Converters::getConverter(string const & from,
 137                                             string const & to) const
 138 {
 139         ConverterList::const_iterator const cit =
 140                 find_if(converterlist_.begin(), converterlist_.end(),
 141                         ConverterEqual(from, to));
 142         if (cit != converterlist_.end())
 143                 return &(*cit);
 144         else
 145                 return 0;
 146 }
 147
 148
 149 int Converters::getNumber(string const & from, string const & to) const
 150 {
 151         ConverterList::const_iterator const cit =
 152                 find_if(converterlist_.begin(), converterlist_.end(),
 153                         ConverterEqual(from, to));
 154         if (cit != converterlist_.end())
 155                 return distance(converterlist_.begin(), cit);
 156         else
 157                 return -1;
 158 }
 159
 160
 161 void Converters::add(string const & from, string const & to,
 162                      string const & command, string const & flags)
 163 {
 164         formats.add(from);
 165         formats.add(to);
 166         ConverterList::iterator it = find_if(converterlist_.begin(),
 167                                              converterlist_.end(),
 168                                              ConverterEqual(from , to));
 169
 170         Converter converter(from, to, command, flags);
 171         if (it != converterlist_.end() && !flags.empty() && flags[0] == '*') {
 172                 converter = *it;
 173                 converter.command = command;
 174                 converter.flags = flags;
 175         }
 176         converter.readFlags();
 177
 178         // If we have both latex & pdflatex, we set latex_command to latex.
 179         // The latex_command is used to update the .aux file when running
 180         // a converter that uses it.
 181         if (converter.latex
 182             && (latex_command_.empty() || converter.latex_flavor == "latex"))
 183                 latex_command_ = subst(command, token_from, "");
 184         // Similarly, set xelatex_command to xelatex.
 185         if (converter.latex
 186             && (xelatex_command_.empty() || converter.latex_flavor == "xelatex"))
 187                 xelatex_command_ = subst(command, token_from, "");
 188
 189         if (it == converterlist_.end()) {
 190                 converterlist_.push_back(converter);
 191         } else {
 192                 converter.From = it->From;
 193                 converter.To = it->To;
 194                 *it = converter;
 195         }
 196 }
 197
 198
 199 void Converters::erase(string const & from, string const & to)
 200 {
 201         ConverterList::iterator const it =
 202                 find_if(converterlist_.begin(),
 203                         converterlist_.end(),
 204                         ConverterEqual(from, to));
 205         if (it != converterlist_.end())
 206                 converterlist_.erase(it);
 207 }
 208
 209
 210 // This method updates the pointers From and To in all the converters.
 211 // The code is not very efficient, but it doesn't matter as the number
 212 // of formats and converters is small.
 213 // Furthermore, this method is called only on startup, or after
 214 // adding/deleting a format in FormPreferences (the latter calls can be
 215 // eliminated if the formats in the Formats class are stored using a map or
 216 // a list (instead of a vector), but this will cause other problems).
 217 void Converters::update(Formats const & formats)
 218 {
 219         ConverterList::iterator it = converterlist_.begin();
 220         ConverterList::iterator end = converterlist_.end();
 221         for (; it != end; ++it) {
 222                 it->From = formats.getFormat(it->from);
 223                 it->To = formats.getFormat(it->to);
 224         }
 225 }
 226
 227
 228 // This method updates the pointers From and To in the last converter.
 229 // It is called when adding a new converter in FormPreferences
 230 void Converters::updateLast(Formats const & formats)
 231 {
 232         if (converterlist_.begin() != converterlist_.end()) {
 233                 ConverterList::iterator it = converterlist_.end() - 1;
 234                 it->From = formats.getFormat(it->from);
 235                 it->To = formats.getFormat(it->to);
 236         }
 237 }
 238
 239
 240 OutputParams::FLAVOR Converters::getFlavor(Graph::EdgePath const & path)
 241 {
 242         for (Graph::EdgePath::const_iterator cit = path.begin();
 243              cit != path.end(); ++cit) {
 244                 Converter const & conv = converterlist_[*cit];
 245                 if (conv.latex)
 246                         if (conv.latex_flavor == "xelatex")
 247                                 return OutputParams::XETEX;
 248                         if (conv.latex_flavor == "lualatex")
 249                                 return OutputParams::LUATEX;
 250                         if (conv.latex_flavor == "dvilualatex")
 251                                 return OutputParams::DVILUATEX;
 252                         if (conv.latex_flavor == "pdflatex")
 253                                 return OutputParams::PDFLATEX;
 254                 if (conv.xml)
 255                         return OutputParams::XML;
 256         }
 257         return OutputParams::LATEX;
 258 }
 259
 260
 261 bool Converters::convert(Buffer const * buffer,
 262                          FileName const & from_file, FileName const & to_file,
 263                          FileName const & orig_from,
 264                          string const & from_format, string const & to_format,
 265                          ErrorList & errorList, int conversionflags)
 266 {
 267         if (from_format == to_format)
 268                 return move(from_format, from_file, to_file, false);
 269
 270         if ((conversionflags & try_cache) &&
 271             ConverterCache::get().inCache(orig_from, to_format))
 272                 return ConverterCache::get().copy(orig_from, to_format, to_file);
 273
 274         Graph::EdgePath edgepath = getPath(from_format, to_format);
 275         if (edgepath.empty()) {
 276                 if (conversionflags & try_default) {
 277                         // if no special converter defined, then we take the
 278                         // default one from ImageMagic.
 279                         string const from_ext = from_format.empty() ?
 280                                 getExtension(from_file.absFileName()) :
 281                                 formats.extension(from_format);
 282                         string const to_ext = formats.extension(to_format);
 283                         string const command =
 284                                 os::python() + ' ' +
 285                                 quoteName(libFileSearch("scripts", "convertDefault.py").toFilesystemEncoding()) +
 286                                 ' ' +
 287                                 quoteName(from_ext + ':' + from_file.toFilesystemEncoding()) +
 288                                 ' ' +
 289                                 quoteName(to_ext + ':' + to_file.toFilesystemEncoding());
 290                         LYXERR(Debug::FILES, "No converter defined! "
 291                                    "I use convertDefault.py:\n\t" << command);
 292                         Systemcall one;
 293                         one.startscript(Systemcall::Wait, command, buffer ?
 294                                         buffer->filePath() : string());
 295                         if (to_file.isReadableFile()) {
 296                                 if (conversionflags & try_cache)
 297                                         ConverterCache::get().add(orig_from,
 298                                                         to_format, to_file);
 299                                 return true;
 300                         }
 301                 }
 302
 303                 // only warn once per session and per file type
 304                 static std::map<string, string> warned;
 305                 if (warned.find(from_format) != warned.end() && warned.find(from_format)->second == to_format) {
 306                         return false;
 307                 }
 308                 warned.insert(make_pair(from_format, to_format));
 309
 310                 Alert::error(_("Cannot convert file"),
 311                              bformat(_("No information for converting %1$s "
 312                                                     "format files to %2$s.\n"
 313                                                     "Define a converter in the preferences."),
 314                                                         from_ascii(from_format), from_ascii(to_format)));
 315                 return false;
 316         }
 317
 318         // buffer is only invalid for importing, and then runparams is not
 319         // used anyway.
 320         OutputParams runparams(buffer ? &buffer->params().encoding() : 0);
 321         runparams.flavor = getFlavor(edgepath);
 322
 323         if (buffer) {
 324                 runparams.use_japanese = buffer->params().bufferFormat() == "platex";
 325                 runparams.use_indices = buffer->params().use_indices;
 326                 runparams.bibtex_command = (buffer->params().bibtex_command == "default") ?
 327                         string() : buffer->params().bibtex_command;
 328                 runparams.index_command = (buffer->params().index_command == "default") ?
 329                         string() : buffer->params().index_command;
 330         }
 331
 332         // Some converters (e.g. lilypond) can only output files to the
 333         // current directory, so we need to change the current directory.
 334         // This has the added benefit that all other files that may be
 335         // generated by the converter are deleted when LyX closes and do not
 336         // clutter the real working directory.
 337         // FIXME: This does not work if path is an UNC path on windows
 338         //        (bug 6127).
 339         string const path(onlyPath(from_file.absFileName()));
 340         // Prevent the compiler from optimizing away p
 341         FileName pp(path);
 342         PathChanger p(pp);
 343
 344         // empty the error list before any new conversion takes place.
 345         errorList.clear();
 346
 347         bool run_latex = false;
 348         string from_base = changeExtension(from_file.absFileName(), "");
 349         string to_base = changeExtension(to_file.absFileName(), "");
 350         FileName infile;
 351         FileName outfile = from_file;
 352         for (Graph::EdgePath::const_iterator cit = edgepath.begin();
 353              cit != edgepath.end(); ++cit) {
 354                 Converter const & conv = converterlist_[*cit];
 355                 bool dummy = conv.To->dummy() && conv.to != "program";
 356                 if (!dummy) {
 357                         LYXERR(Debug::FILES, "Converting from  "
 358                                << conv.from << " to " << conv.to);
 359                 }
 360                 infile = outfile;
 361                 outfile = FileName(conv.result_file.empty()
 362                         ? changeExtension(from_file.absFileName(), conv.To->extension())
 363                         : addName(subst(conv.result_dir,
 364                                         token_base, from_base),
 365                                   subst(conv.result_file,
 366                                         token_base, onlyFileName(from_base))));
 367
 368                 // if input and output files are equal, we use a
 369                 // temporary file as intermediary (JMarc)
 370                 FileName real_outfile;
 371                 if (!conv.result_file.empty())
 372                         real_outfile = FileName(changeExtension(from_file.absFileName(),
 373                                 conv.To->extension()));
 374                 if (outfile == infile) {
 375                         real_outfile = infile;
 376                         // when importing, a buffer does not necessarily exist
 377                         if (buffer)
 378                                 outfile = FileName(addName(buffer->temppath(), "tmpfile.out"));
 379                         else
 380                                 outfile = FileName(addName(package().temp_dir().absFileName(),
 381                                                    "tmpfile.out"));
 382                 }
 383
 384                 if (conv.latex) {
 385                         run_latex = true;
 386                         string command = conv.command;
 387                         command = subst(command, token_from, "");
 388                         command = subst(command, token_latex_encoding, buffer ?
 389                                 buffer->params().encoding().latexName() : string());
 390                         LYXERR(Debug::FILES, "Running " << command);
 391                         if (!runLaTeX(*buffer, command, runparams, errorList))
 392                                 return false;
 393                 } else {
 394                         if (conv.need_aux && !run_latex
 395                             && !latex_command_.empty()) {
 396                                 string const command = (buffer && buffer->params().useNonTeXFonts) ?
 397                                         xelatex_command_ : latex_command_;
 398                                 LYXERR(Debug::FILES, "Running " << command
 399                                         << " to update aux file");
 400                                 if (!runLaTeX(*buffer, command, runparams, errorList))
 401                                         return false;
 402                         }
 403
 404                         // FIXME UNICODE
 405                         string const infile2 =
 406                                 to_utf8(makeRelPath(from_utf8(infile.absFileName()), from_utf8(path)));
 407                         string const outfile2 =
 408                                 to_utf8(makeRelPath(from_utf8(outfile.absFileName()), from_utf8(path)));
 409
 410                         string command = conv.command;
 411                         command = subst(command, token_from, quoteName(infile2));
 412                         command = subst(command, token_base, quoteName(from_base));
 413                         command = subst(command, token_to, quoteName(outfile2));
 414                         command = subst(command, token_path, quoteName(onlyPath(infile.absFileName())));
 415                         command = subst(command, token_orig_path, quoteName(onlyPath(orig_from.absFileName())));
 416                         command = subst(command, token_orig_from, quoteName(onlyFileName(orig_from.absFileName())));
 417                         command = subst(command, token_encoding, buffer ? buffer->params().encoding().iconvName() : string());
 418                         command = libScriptSearch(command);
 419
 420                         if (!conv.parselog.empty())
 421                                 command += " 2> " + quoteName(infile2 + ".out");
 422
 423                         if (conv.from == "dvi" && conv.to == "ps")
 424                                 command = add_options(command,
 425                                                       buffer->params().dvips_options());
 426                         else if (conv.from == "dvi" && prefixIs(conv.to, "pdf"))
 427                                 command = add_options(command,
 428                                                       dvipdfm_options(buffer->params()));
 429
 430                         LYXERR(Debug::FILES, "Calling " << command);
 431                         if (buffer)
 432                                 buffer->message(_("Executing command: ")
 433                                 + from_utf8(command));
 434
 435                         Systemcall one;
 436                         int res;
 437                         if (dummy) {
 438                                 res = one.startscript(Systemcall::DontWait,
 439                                         to_filesystem8bit(from_utf8(command)),
 440                                         buffer ? buffer->filePath() : string());
 441                                 // We're not waiting for the result, so we can't do anything
 442                                 // else here.
 443                         } else {
 444                                 res = one.startscript(Systemcall::Wait,
 445                                                 to_filesystem8bit(from_utf8(command)),
 446                                                 buffer ? buffer->filePath()
 447                                                        : string());
 448                                 if (!real_outfile.empty()) {
 449                                         Mover const & mover = getMover(conv.to);
 450                                         if (!mover.rename(outfile, real_outfile))
 451                                                 res = -1;
 452                                         else
 453                                                 LYXERR(Debug::FILES, "renaming file " << outfile
 454                                                         << " to " << real_outfile);
 455                                         // Finally, don't forget to tell any future
 456                                         // converters to use the renamed file...
 457                                         outfile = real_outfile;
 458                                 }
 459
 460                                 if (!conv.parselog.empty()) {
 461                                         string const logfile =  infile2 + ".log";
 462                                         string const script = libScriptSearch(conv.parselog);
 463                                         string const command2 = script +
 464                                                 " < " + quoteName(infile2 + ".out") +
 465                                                 " > " + quoteName(logfile);
 466                                         one.startscript(Systemcall::Wait,
 467                                                 to_filesystem8bit(from_utf8(command2)),
 468                                                 buffer->filePath());
 469                                         if (!scanLog(*buffer, command, makeAbsPath(logfile, path), errorList))
 470                                                 return false;
 471                                 }
 472                         }
 473
 474                         if (res) {
 475                                 if (conv.to == "program") {
 476                                         Alert::error(_("Build errors"),
 477                                                 _("There were errors during the build process."));
 478                                 } else {
 479 // FIXME: this should go out of here. For example, here we cannot say if
 480 // it is a document (.lyx) or something else. Same goes for elsewhere.
 481                                         Alert::error(_("Cannot convert file"),
 482                                                 bformat(_("An error occurred while running:\n%1$s"),
 483                                                 wrapParas(from_utf8(command))));
 484                                 }
 485                                 return false;
 486                         }
 487                 }
 488         }
 489
 490         Converter const & conv = converterlist_[edgepath.back()];
 491         if (conv.To->dummy())
 492                 return true;
 493
 494         if (!conv.result_dir.empty()) {
 495                 // The converter has put the file(s) in a directory.
 496                 // In this case we ignore the given to_file.
 497                 if (from_base != to_base) {
 498                         string const from = subst(conv.result_dir,
 499                                             token_base, from_base);
 500                         string const to = subst(conv.result_dir,
 501                                           token_base, to_base);
 502                         Mover const & mover = getMover(conv.from);
 503                         if (!mover.rename(FileName(from), FileName(to))) {
 504                                 Alert::error(_("Cannot convert file"),
 505                                         bformat(_("Could not move a temporary directory from %1$s to %2$s."),
 506                                                 from_utf8(from), from_utf8(to)));
 507                                 return false;
 508                         }
 509                 }
 510                 return true;
 511         } else {
 512                 if (conversionflags & try_cache)
 513                         ConverterCache::get().add(orig_from, to_format, outfile);
 514                 return move(conv.to, outfile, to_file, conv.latex);
 515         }
 516 }
 517
 518
 519 bool Converters::move(string const & fmt,
 520                       FileName const & from, FileName const & to, bool copy)
 521 {
 522         if (from == to)
 523                 return true;
 524
 525         bool no_errors = true;
 526         string const path = onlyPath(from.absFileName());
 527         string const base = onlyFileName(removeExtension(from.absFileName()));
 528         string const to_base = removeExtension(to.absFileName());
 529         string const to_extension = getExtension(to.absFileName());
 530
 531         support::FileNameList const files = FileName(path).dirList(getExtension(from.absFileName()));
 532         for (support::FileNameList::const_iterator it = files.begin();
 533              it != files.end(); ++it) {
 534                 string const from2 = it->absFileName();
 535                 string const file2 = onlyFileName(from2);
 536                 if (prefixIs(file2, base)) {
 537                         string const to2 = changeExtension(
 538                                 to_base + file2.substr(base.length()),
 539                                 to_extension);
 540                         LYXERR(Debug::FILES, "moving " << from2 << " to " << to2);
 541
 542                         Mover const & mover = getMover(fmt);
 543                         bool const moved = copy
 544                                 ? mover.copy(*it, FileName(to2))
 545                                 : mover.rename(*it, FileName(to2));
 546                         if (!moved && no_errors) {
 547                                 Alert::error(_("Cannot convert file"),
 548                                         bformat(copy ?
 549                                                 _("Could not copy a temporary file from %1$s to %2$s.") :
 550                                                 _("Could not move a temporary file from %1$s to %2$s."),
 551                                                 from_utf8(from2), from_utf8(to2)));
 552                                 no_errors = false;
 553                         }
 554                 }
 555         }
 556         return no_errors;
 557 }
 558
 559
 560 bool Converters::formatIsUsed(string const & format)
 561 {
 562         ConverterList::const_iterator cit = converterlist_.begin();
 563         ConverterList::const_iterator end = converterlist_.end();
 564         for (; cit != end; ++cit) {
 565                 if (cit->from == format || cit->to == format)
 566                         return true;
 567         }
 568         return false;
 569 }
 570
 571
 572 bool Converters::scanLog(Buffer const & buffer, string const & /*command*/,
 573                          FileName const & filename, ErrorList & errorList)
 574 {
 575         OutputParams runparams(0);
 576         runparams.flavor = OutputParams::LATEX;
 577         LaTeX latex("", runparams, filename);
 578         TeXErrors terr;
 579         int const result = latex.scanLogFile(terr);
 580
 581         if (result & LaTeX::ERRORS)
 582                 buffer.bufferErrors(terr, errorList);
 583
 584         return true;
 585 }
 586
 587
 588 namespace {
 589
 590 class ShowMessage
 591         : public boost::signals::trackable {
 592 public:
 593         ShowMessage(Buffer const & b) : buffer_(b) {}
 594         void operator()(docstring const & msg) const { buffer_.message(msg); }
 595 private:
 596         Buffer const & buffer_;
 597 };
 598
 599 }
 600
 601
 602 bool Converters::runLaTeX(Buffer const & buffer, string const & command,
 603                           OutputParams const & runparams, ErrorList & errorList)
 604 {
 605         buffer.setBusy(true);
 606         buffer.message(_("Running LaTeX..."));
 607
 608         runparams.document_language = buffer.params().language->babel();
 609
 610         // do the LaTeX run(s)
 611         string const name = buffer.latexName();
 612         LaTeX latex(command, runparams, FileName(makeAbsPath(name)),
 613                     buffer.filePath());
 614         TeXErrors terr;
 615         ShowMessage show(buffer);
 616         latex.message.connect(show);
 617         int const result = latex.run(terr);
 618
 619         if (result & LaTeX::ERRORS)
 620                 buffer.bufferErrors(terr, errorList);
 621
 622         // check return value from latex.run().
 623         if ((result & LaTeX::NO_LOGFILE) && !buffer.isClone()) {
 624                 docstring const str =
 625                         bformat(_("LaTeX did not run successfully. "
 626                                                "Additionally, LyX could not locate "
 627                                                "the LaTeX log %1$s."), from_utf8(name));
 628                 Alert::error(_("LaTeX failed"), str);
 629         } else if ((result & LaTeX::NO_OUTPUT) && !buffer.isClone()) {
 630                 Alert::warning(_("Output is empty"),
 631                                _("An empty output file was generated."));
 632         }
 633
 634
 635         buffer.setBusy(false);
 636
 637         int const ERROR_MASK =
 638                         LaTeX::NO_LOGFILE |
 639                         LaTeX::ERRORS |
 640                         LaTeX::NO_OUTPUT;
 641
 642         return (result & ERROR_MASK) == 0;
 643
 644 }
 645
 646
 647
 648 void Converters::buildGraph()
 649 {
 650         // clear graph's data structures
 651         G_.init(formats.size());
 652         // each of the converters knows how to convert one format to another
 653         // so, for each of them, we create an arrow on the graph, going from
 654         // the one to the other
 655         ConverterList::iterator it = converterlist_.begin();
 656         ConverterList::iterator const end = converterlist_.end();
 657         for (; it != end ; ++it) {
 658                 int const from = formats.getNumber(it->from);
 659                 int const to   = formats.getNumber(it->to);
 660                 G_.addEdge(from, to);
 661         }
 662 }
 663
 664
 665 vector<Format const *> const
 666 Converters::intToFormat(vector<int> const & input)
 667 {
 668         vector<Format const *> result(input.size());
 669
 670         vector<int>::const_iterator it = input.begin();
 671         vector<int>::const_iterator const end = input.end();
 672         vector<Format const *>::iterator rit = result.begin();
 673         for ( ; it != end; ++it, ++rit) {
 674                 *rit = &formats.get(*it);
 675         }
 676         return result;
 677 }
 678
 679
 680 vector<Format const *> const
 681 Converters::getReachableTo(string const & target, bool const clear_visited)
 682 {
 683         vector<int> const & reachablesto =
 684                 G_.getReachableTo(formats.getNumber(target), clear_visited);
 685
 686         return intToFormat(reachablesto);
 687 }
 688
 689
 690 vector<Format const *> const
 691 Converters::getReachable(string const & from, bool const only_viewable,
 692                          bool const clear_visited, set<string> const & excludes)
 693 {
 694         set<int> excluded_numbers;;
 695
 696         set<string>::const_iterator sit = excludes.begin();
 697         set<string>::const_iterator const end = excludes.end();
 698         for (; sit != end; ++sit)
 699                 excluded_numbers.insert(formats.getNumber(*sit));
 700
 701         vector<int> const & reachables =
 702                 G_.getReachable(formats.getNumber(from),
 703                                 only_viewable,
 704                                 clear_visited,
 705                                 excluded_numbers);
 706
 707         return intToFormat(reachables);
 708 }
 709
 710
 711 bool Converters::isReachable(string const & from, string const & to)
 712 {
 713         return G_.isReachable(formats.getNumber(from),
 714                               formats.getNumber(to));
 715 }
 716
 717
 718 Graph::EdgePath Converters::getPath(string const & from, string const & to)
 719 {
 720         return G_.getPath(formats.getNumber(from),
 721                           formats.getNumber(to));
 722 }
 723
 724
 725 vector<Format const *> Converters::importableFormats()
 726 {
 727         vector<string> l = loaders();
 728         vector<Format const *> result = getReachableTo(l[0], true);
 729         vector<string>::const_iterator it = l.begin() + 1;
 730         vector<string>::const_iterator en = l.end();
 731         for (; it != en; ++it) {
 732                 vector<Format const *> r = getReachableTo(*it, false);
 733                 result.insert(result.end(), r.begin(), r.end());
 734         }
 735         return result;
 736 }
 737
 738
 739 vector<Format const *> Converters::exportableFormats(bool only_viewable)
 740 {
 741         vector<string> s = savers();
 742         vector<Format const *> result = getReachable(s[0], only_viewable, true);
 743         vector<string>::const_iterator it = s.begin() + 1;
 744         vector<string>::const_iterator en = s.end();
 745         for (; it != en; ++it) {
 746                 vector<Format const *> r =
 747                         getReachable(*it, only_viewable, false);
 748                 result.insert(result.end(), r.begin(), r.end());
 749         }
 750         return result;
 751 }
 752
 753
 754 vector<string> Converters::loaders() const
 755 {
 756         vector<string> v;
 757         v.push_back("lyx");
 758         v.push_back("text");
 759         v.push_back("textparagraph");
 760         return v;
 761 }
 762
 763
 764 vector<string> Converters::savers() const
 765 {
 766         vector<string> v;
 767         v.push_back("docbook");
 768         v.push_back("latex");
 769         v.push_back("literate");
 770         v.push_back("luatex");
 771         v.push_back("dviluatex");
 772         v.push_back("lyx");
 773         v.push_back("xhtml");
 774         v.push_back("pdflatex");
 775         v.push_back("platex");
 776         v.push_back("text");
 777         v.push_back("xetex");
 778         return v;
 779 }
 780
 781
 782 } // namespace lyx