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/PathChanger.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), nice_(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                 else if (flag_name == "nice")
 129                         nice_ = true;
 130         }
 131         if (!result_dir_.empty() && result_file_.empty())
 132                 result_file_ = "index." + formats.extension(to_);
 133         //if (!contains(command, token_from))
 134         //      latex = true;
 135 }
 136
 137
 138 Converter const * Converters::getConverter(string const & from,
 139                                             string const & to) const
 140 {
 141         ConverterList::const_iterator const cit =
 142                 find_if(converterlist_.begin(), converterlist_.end(),
 143                         ConverterEqual(from, to));
 144         if (cit != converterlist_.end())
 145                 return &(*cit);
 146         else
 147                 return 0;
 148 }
 149
 150
 151 int Converters::getNumber(string const & from, string const & to) const
 152 {
 153         ConverterList::const_iterator const cit =
 154                 find_if(converterlist_.begin(), converterlist_.end(),
 155                         ConverterEqual(from, to));
 156         if (cit != converterlist_.end())
 157                 return distance(converterlist_.begin(), cit);
 158         else
 159                 return -1;
 160 }
 161
 162
 163 void Converters::add(string const & from, string const & to,
 164                      string const & command, string const & flags)
 165 {
 166         formats.add(from);
 167         formats.add(to);
 168         ConverterList::iterator it = find_if(converterlist_.begin(),
 169                                              converterlist_.end(),
 170                                              ConverterEqual(from , to));
 171
 172         Converter converter(from, to, command, flags);
 173         if (it != converterlist_.end() && !flags.empty() && flags[0] == '*') {
 174                 converter = *it;
 175                 converter.setCommand(command);
 176                 converter.setFlags(flags);
 177         }
 178         converter.readFlags();
 179
 180         // The latex_command is used to update the .aux file when running
 181         // a converter that uses it.
 182         if (converter.latex()) {
 183                 if (latex_command_.empty() ||
 184                     converter.latex_flavor() == "latex")
 185                         latex_command_ = subst(command, token_from, "");
 186                 if (dvilualatex_command_.empty() ||
 187                     converter.latex_flavor() == "dvilualatex")
 188                         dvilualatex_command_ = subst(command, token_from, "");
 189                 if (lualatex_command_.empty() ||
 190                     converter.latex_flavor() == "lualatex")
 191                         lualatex_command_ = subst(command, token_from, "");
 192                 if (pdflatex_command_.empty() ||
 193                     converter.latex_flavor() == "pdflatex")
 194                         pdflatex_command_ = subst(command, token_from, "");
 195                 if (xelatex_command_.empty() ||
 196                     converter.latex_flavor() == "xelatex")
 197                         xelatex_command_ = subst(command, token_from, "");
 198         }
 199
 200         if (it == converterlist_.end()) {
 201                 converterlist_.push_back(converter);
 202         } else {
 203                 converter.setFrom(it->From());
 204                 converter.setTo(it->To());
 205                 *it = converter;
 206         }
 207 }
 208
 209
 210 void Converters::erase(string const & from, string const & to)
 211 {
 212         ConverterList::iterator const it =
 213                 find_if(converterlist_.begin(),
 214                         converterlist_.end(),
 215                         ConverterEqual(from, to));
 216         if (it != converterlist_.end())
 217                 converterlist_.erase(it);
 218 }
 219
 220
 221 // This method updates the pointers From and To in all the converters.
 222 // The code is not very efficient, but it doesn't matter as the number
 223 // of formats and converters is small.
 224 // Furthermore, this method is called only on startup, or after
 225 // adding/deleting a format in FormPreferences (the latter calls can be
 226 // eliminated if the formats in the Formats class are stored using a map or
 227 // a list (instead of a vector), but this will cause other problems).
 228 void Converters::update(Formats const & formats)
 229 {
 230         ConverterList::iterator it = converterlist_.begin();
 231         ConverterList::iterator end = converterlist_.end();
 232         for (; it != end; ++it) {
 233                 it->setFrom(formats.getFormat(it->from()));
 234                 it->setTo(formats.getFormat(it->to()));
 235         }
 236 }
 237
 238
 239 // This method updates the pointers From and To in the last converter.
 240 // It is called when adding a new converter in FormPreferences
 241 void Converters::updateLast(Formats const & formats)
 242 {
 243         if (converterlist_.begin() != converterlist_.end()) {
 244                 ConverterList::iterator it = converterlist_.end() - 1;
 245                 it->setFrom(formats.getFormat(it->from()));
 246                 it->setTo(formats.getFormat(it->to()));
 247         }
 248 }
 249
 250
 251 OutputParams::FLAVOR Converters::getFlavor(Graph::EdgePath const & path,
 252                                            Buffer const * buffer)
 253 {
 254         for (Graph::EdgePath::const_iterator cit = path.begin();
 255              cit != path.end(); ++cit) {
 256                 Converter const & conv = converterlist_[*cit];
 257                 if (conv.latex()) {
 258                         if (conv.latex_flavor() == "latex")
 259                                 return OutputParams::LATEX;
 260                         if (conv.latex_flavor() == "xelatex")
 261                                 return OutputParams::XETEX;
 262                         if (conv.latex_flavor() == "lualatex")
 263                                 return OutputParams::LUATEX;
 264                         if (conv.latex_flavor() == "dvilualatex")
 265                                 return OutputParams::DVILUATEX;
 266                         if (conv.latex_flavor() == "pdflatex")
 267                                 return OutputParams::PDFLATEX;
 268                 }
 269                 if (conv.xml())
 270                         return OutputParams::XML;
 271         }
 272         return buffer ? buffer->params().getOutputFlavor()
 273                       : OutputParams::LATEX;
 274 }
 275
 276
 277 bool Converters::convert(Buffer const * buffer,
 278                          FileName const & from_file, FileName const & to_file,
 279                          FileName const & orig_from,
 280                          string const & from_format, string const & to_format,
 281                          ErrorList & errorList, int conversionflags)
 282 {
 283         if (from_format == to_format)
 284                 return move(from_format, from_file, to_file, false);
 285
 286         if ((conversionflags & try_cache) &&
 287             ConverterCache::get().inCache(orig_from, to_format))
 288                 return ConverterCache::get().copy(orig_from, to_format, to_file);
 289
 290         Graph::EdgePath edgepath = getPath(from_format, to_format);
 291         if (edgepath.empty()) {
 292                 if (conversionflags & try_default) {
 293                         // if no special converter defined, then we take the
 294                         // default one from ImageMagic.
 295                         string const from_ext = from_format.empty() ?
 296                                 getExtension(from_file.absFileName()) :
 297                                 formats.extension(from_format);
 298                         string const to_ext = formats.extension(to_format);
 299                         string const command =
 300                                 os::python() + ' ' +
 301                                 quoteName(libFileSearch("scripts", "convertDefault.py").toFilesystemEncoding()) +
 302                                 ' ' + from_ext + ' ' +
 303                                 quoteName(from_file.toFilesystemEncoding()) +
 304                                 ' ' + to_ext + ' ' +
 305                                 quoteName(to_file.toFilesystemEncoding());
 306                         LYXERR(Debug::FILES, "No converter defined! "
 307                                    "I use convertDefault.py:\n\t" << command);
 308                         Systemcall one;
 309                         one.startscript(Systemcall::Wait, command,
 310                                         buffer ? buffer->filePath() : string(),
 311                                         buffer ? buffer->layoutPos() : 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, buffer);
 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                 runparams.document_language = buffer->params().language->babel();
 348         }
 349
 350         // Some converters (e.g. lilypond) can only output files to the
 351         // current directory, so we need to change the current directory.
 352         // This has the added benefit that all other files that may be
 353         // generated by the converter are deleted when LyX closes and do not
 354         // clutter the real working directory.
 355         // FIXME: This does not work if path is an UNC path on windows
 356         //        (bug 6127).
 357         string const path(onlyPath(from_file.absFileName()));
 358         // Prevent the compiler from optimizing away p
 359         FileName pp(path);
 360         PathChanger p(pp);
 361
 362         // empty the error list before any new conversion takes place.
 363         errorList.clear();
 364
 365         bool run_latex = false;
 366         string from_base = changeExtension(from_file.absFileName(), "");
 367         string to_base = changeExtension(to_file.absFileName(), "");
 368         FileName infile;
 369         FileName outfile = from_file;
 370         for (Graph::EdgePath::const_iterator cit = edgepath.begin();
 371              cit != edgepath.end(); ++cit) {
 372                 Converter const & conv = converterlist_[*cit];
 373                 bool dummy = conv.To()->dummy() && conv.to() != "program";
 374                 if (!dummy) {
 375                         LYXERR(Debug::FILES, "Converting from  "
 376                                << conv.from() << " to " << conv.to());
 377                 }
 378                 infile = outfile;
 379                 outfile = FileName(conv.result_file().empty()
 380                         ? changeExtension(from_file.absFileName(), conv.To()->extension())
 381                         : addName(subst(conv.result_dir(),
 382                                         token_base, from_base),
 383                                   subst(conv.result_file(),
 384                                         token_base, onlyFileName(from_base))));
 385
 386                 // if input and output files are equal, we use a
 387                 // temporary file as intermediary (JMarc)
 388                 FileName real_outfile;
 389                 if (!conv.result_file().empty())
 390                         real_outfile = FileName(changeExtension(from_file.absFileName(),
 391                                 conv.To()->extension()));
 392                 if (outfile == infile) {
 393                         real_outfile = infile;
 394                         // when importing, a buffer does not necessarily exist
 395                         if (buffer)
 396                                 outfile = FileName(addName(buffer->temppath(), "tmpfile.out"));
 397                         else
 398                                 outfile = FileName(addName(package().temp_dir().absFileName(),
 399                                                    "tmpfile.out"));
 400                 }
 401
 402                 if (conv.latex()) {
 403                         run_latex = true;
 404                         string command = conv.command();
 405                         command = subst(command, token_from, "");
 406                         command = subst(command, token_latex_encoding, buffer ?
 407                                 buffer->params().encoding().latexName() : string());
 408                         LYXERR(Debug::FILES, "Running " << command);
 409                         if (!runLaTeX(*buffer, command, runparams, errorList))
 410                                 return false;
 411                 } else {
 412                         if (conv.need_aux() && !run_latex) {
 413                                 string command;
 414                                 switch (runparams.flavor) {
 415                                 case OutputParams::DVILUATEX:
 416                                         command = dvilualatex_command_;
 417                                         break;
 418                                 case OutputParams::LUATEX:
 419                                         command = lualatex_command_;
 420                                         break;
 421                                 case OutputParams::PDFLATEX:
 422                                         command = pdflatex_command_;
 423                                         break;
 424                                 case OutputParams::XETEX:
 425                                         command = xelatex_command_;
 426                                         break;
 427                                 default:
 428                                         command = latex_command_;
 429                                         break;
 430                                 }
 431                                 if (!command.empty()) {
 432                                         LYXERR(Debug::FILES, "Running "
 433                                                 << command
 434                                                 << " to update aux file");
 435                                         if (!runLaTeX(*buffer, command,
 436                                                       runparams, errorList))
 437                                                 return false;
 438                                 }
 439                         }
 440
 441                         // FIXME UNICODE
 442                         string const infile2 =
 443                                 to_utf8(makeRelPath(from_utf8(infile.absFileName()), from_utf8(path)));
 444                         string const outfile2 =
 445                                 to_utf8(makeRelPath(from_utf8(outfile.absFileName()), from_utf8(path)));
 446
 447                         string command = conv.command();
 448                         command = subst(command, token_from, quoteName(infile2));
 449                         command = subst(command, token_base, quoteName(from_base));
 450                         command = subst(command, token_to, quoteName(outfile2));
 451                         command = subst(command, token_path, quoteName(onlyPath(infile.absFileName())));
 452                         command = subst(command, token_orig_path, quoteName(onlyPath(orig_from.absFileName())));
 453                         command = subst(command, token_orig_from, quoteName(onlyFileName(orig_from.absFileName())));
 454                         command = subst(command, token_encoding, buffer ? buffer->params().encoding().iconvName() : string());
 455
 456                         if (!conv.parselog().empty())
 457                                 command += " 2> " + quoteName(infile2 + ".out");
 458
 459                         // it is not actually not necessary to test for buffer here,
 460                         // but it pleases coverity.
 461                         if (buffer && conv.from() == "dvi" && conv.to() == "ps")
 462                                 command = add_options(command,
 463                                                       buffer->params().dvips_options());
 464                         else if (buffer && conv.from() == "dvi" && prefixIs(conv.to(), "pdf"))
 465                                 command = add_options(command,
 466                                                       dvipdfm_options(buffer->params()));
 467
 468                         LYXERR(Debug::FILES, "Calling " << command);
 469                         if (buffer)
 470                                 buffer->message(_("Executing command: ")
 471                                 + from_utf8(command));
 472
 473                         Systemcall one;
 474                         int res;
 475                         if (dummy) {
 476                                 res = one.startscript(Systemcall::DontWait,
 477                                         to_filesystem8bit(from_utf8(command)),
 478                                         buffer ? buffer->filePath() : string(),
 479                                         buffer ? buffer->layoutPos() : string());
 480                                 // We're not waiting for the result, so we can't do anything
 481                                 // else here.
 482                         } else {
 483                                 res = one.startscript(Systemcall::Wait,
 484                                                 to_filesystem8bit(from_utf8(command)),
 485                                                 buffer ? buffer->filePath()
 486                                                        : string(),
 487                                                 buffer ? buffer->layoutPos()
 488                                                        : string());
 489                                 if (!real_outfile.empty()) {
 490                                         Mover const & mover = getMover(conv.to());
 491                                         if (!mover.rename(outfile, real_outfile))
 492                                                 res = -1;
 493                                         else
 494                                                 LYXERR(Debug::FILES, "renaming file " << outfile
 495                                                         << " to " << real_outfile);
 496                                         // Finally, don't forget to tell any future
 497                                         // converters to use the renamed file...
 498                                         outfile = real_outfile;
 499                                 }
 500
 501                                 if (!conv.parselog().empty()) {
 502                                         string const logfile =  infile2 + ".log";
 503                                         string const command2 = conv.parselog() +
 504                                                 " < " + quoteName(infile2 + ".out") +
 505                                                 " > " + quoteName(logfile);
 506                                         one.startscript(Systemcall::Wait,
 507                                                 to_filesystem8bit(from_utf8(command2)),
 508                                                 buffer->filePath(),
 509                                                 buffer->layoutPos());
 510                                         if (!scanLog(*buffer, command, makeAbsPath(logfile, path), errorList))
 511                                                 return false;
 512                                 }
 513                         }
 514
 515                         if (res) {
 516                                 if (conv.to() == "program") {
 517                                         Alert::error(_("Build errors"),
 518                                                 _("There were errors during the build process."));
 519                                 } else {
 520 // FIXME: this should go out of here. For example, here we cannot say if
 521 // it is a document (.lyx) or something else. Same goes for elsewhere.
 522                                         Alert::error(_("Cannot convert file"),
 523                                                 bformat(_("An error occurred while running:\n%1$s"),
 524                                                 wrapParas(from_utf8(command))));
 525                                 }
 526                                 return false;
 527                         }
 528                 }
 529         }
 530
 531         Converter const & conv = converterlist_[edgepath.back()];
 532         if (conv.To()->dummy())
 533                 return true;
 534
 535         if (!conv.result_dir().empty()) {
 536                 // The converter has put the file(s) in a directory.
 537                 // In this case we ignore the given to_file.
 538                 if (from_base != to_base) {
 539                         string const from = subst(conv.result_dir(),
 540                                             token_base, from_base);
 541                         string const to = subst(conv.result_dir(),
 542                                           token_base, to_base);
 543                         Mover const & mover = getMover(conv.from());
 544                         if (!mover.rename(FileName(from), FileName(to))) {
 545                                 Alert::error(_("Cannot convert file"),
 546                                         bformat(_("Could not move a temporary directory from %1$s to %2$s."),
 547                                                 from_utf8(from), from_utf8(to)));
 548                                 return false;
 549                         }
 550                 }
 551                 return true;
 552         } else {
 553                 if (conversionflags & try_cache)
 554                         ConverterCache::get().add(orig_from, to_format, outfile);
 555                 return move(conv.to(), outfile, to_file, conv.latex());
 556         }
 557 }
 558
 559
 560 bool Converters::move(string const & fmt,
 561                       FileName const & from, FileName const & to, bool copy)
 562 {
 563         if (from == to)
 564                 return true;
 565
 566         bool no_errors = true;
 567         string const path = onlyPath(from.absFileName());
 568         string const base = onlyFileName(removeExtension(from.absFileName()));
 569         string const to_base = removeExtension(to.absFileName());
 570         string const to_extension = getExtension(to.absFileName());
 571
 572         support::FileNameList const files = FileName(path).dirList(getExtension(from.absFileName()));
 573         for (support::FileNameList::const_iterator it = files.begin();
 574              it != files.end(); ++it) {
 575                 string const from2 = it->absFileName();
 576                 string const file2 = onlyFileName(from2);
 577                 if (prefixIs(file2, base)) {
 578                         string const to2 = changeExtension(
 579                                 to_base + file2.substr(base.length()),
 580                                 to_extension);
 581                         LYXERR(Debug::FILES, "moving " << from2 << " to " << to2);
 582
 583                         Mover const & mover = getMover(fmt);
 584                         bool const moved = copy
 585                                 ? mover.copy(*it, FileName(to2))
 586                                 : mover.rename(*it, FileName(to2));
 587                         if (!moved && no_errors) {
 588                                 Alert::error(_("Cannot convert file"),
 589                                         bformat(copy ?
 590                                                 _("Could not copy a temporary file from %1$s to %2$s.") :
 591                                                 _("Could not move a temporary file from %1$s to %2$s."),
 592                                                 from_utf8(from2), from_utf8(to2)));
 593                                 no_errors = false;
 594                         }
 595                 }
 596         }
 597         return no_errors;
 598 }
 599
 600
 601 bool Converters::formatIsUsed(string const & format)
 602 {
 603         ConverterList::const_iterator cit = converterlist_.begin();
 604         ConverterList::const_iterator end = converterlist_.end();
 605         for (; cit != end; ++cit) {
 606                 if (cit->from() == format || cit->to() == format)
 607                         return true;
 608         }
 609         return false;
 610 }
 611
 612
 613 bool Converters::scanLog(Buffer const & buffer, string const & /*command*/,
 614                          FileName const & filename, ErrorList & errorList)
 615 {
 616         OutputParams runparams(0);
 617         runparams.flavor = OutputParams::LATEX;
 618         LaTeX latex("", runparams, filename);
 619         TeXErrors terr;
 620         int const result = latex.scanLogFile(terr);
 621
 622         if (result & LaTeX::ERRORS)
 623                 buffer.bufferErrors(terr, errorList);
 624
 625         return true;
 626 }
 627
 628
 629 namespace {
 630
 631 class ShowMessage
 632         : public boost::signals::trackable {
 633 public:
 634         ShowMessage(Buffer const & b) : buffer_(b) {}
 635         void operator()(docstring const & msg) const { buffer_.message(msg); }
 636 private:
 637         Buffer const & buffer_;
 638 };
 639
 640 }
 641
 642
 643 bool Converters::runLaTeX(Buffer const & buffer, string const & command,
 644                           OutputParams const & runparams, ErrorList & errorList)
 645 {
 646         buffer.setBusy(true);
 647         buffer.message(_("Running LaTeX..."));
 648
 649         // do the LaTeX run(s)
 650         string const name = buffer.latexName();
 651         LaTeX latex(command, runparams, FileName(makeAbsPath(name)),
 652                     buffer.filePath(), buffer.layoutPos(),
 653                     buffer.lastPreviewError());
 654         TeXErrors terr;
 655         ShowMessage show(buffer);
 656         latex.message.connect(show);
 657         int const result = latex.run(terr);
 658
 659         if (result & LaTeX::ERRORS)
 660                 buffer.bufferErrors(terr, errorList);
 661
 662         if (!errorList.empty()) {
 663           // We will show the LaTeX Errors GUI later which contains
 664           // specific error messages so it would be repetitive to give
 665           // e.g. the "finished with an error" dialog in addition.
 666         }
 667         else if (result & LaTeX::NO_LOGFILE) {
 668                 docstring const str =
 669                         bformat(_("LaTeX did not run successfully. "
 670                                                "Additionally, LyX could not locate "
 671                                                "the LaTeX log %1$s."), from_utf8(name));
 672                 Alert::error(_("LaTeX failed"), str);
 673         } else if (result & LaTeX::NONZERO_ERROR) {
 674                 docstring const str =
 675                         bformat(_( "The external program\n%1$s\n"
 676                               "finished with an error. "
 677                               "It is recommended you fix the cause of the external "
 678                               "program's error (check the logs). "), from_utf8(command));
 679                 Alert::error(_("LaTeX failed"), str);
 680         } else if (result & LaTeX::NO_OUTPUT) {
 681                 Alert::warning(_("Output is empty"),
 682                                _("No output file was generated."));
 683         }
 684
 685
 686         buffer.setBusy(false);
 687
 688         int const ERROR_MASK =
 689                         LaTeX::NO_LOGFILE |
 690                         LaTeX::ERRORS |
 691                         LaTeX::NO_OUTPUT;
 692
 693         return (result & ERROR_MASK) == 0;
 694 }
 695
 696
 697
 698 void Converters::buildGraph()
 699 {
 700         // clear graph's data structures
 701         G_.init(formats.size());
 702         // each of the converters knows how to convert one format to another
 703         // so, for each of them, we create an arrow on the graph, going from
 704         // the one to the other
 705         ConverterList::iterator it = converterlist_.begin();
 706         ConverterList::iterator const end = converterlist_.end();
 707         for (; it != end ; ++it) {
 708                 int const from = formats.getNumber(it->from());
 709                 int const to   = formats.getNumber(it->to());
 710                 G_.addEdge(from, to);
 711         }
 712 }
 713
 714
 715 vector<Format const *> const
 716 Converters::intToFormat(vector<int> const & input)
 717 {
 718         vector<Format const *> result(input.size());
 719
 720         vector<int>::const_iterator it = input.begin();
 721         vector<int>::const_iterator const end = input.end();
 722         vector<Format const *>::iterator rit = result.begin();
 723         for ( ; it != end; ++it, ++rit) {
 724                 *rit = &formats.get(*it);
 725         }
 726         return result;
 727 }
 728
 729
 730 vector<Format const *> const
 731 Converters::getReachableTo(string const & target, bool const clear_visited)
 732 {
 733         vector<int> const & reachablesto =
 734                 G_.getReachableTo(formats.getNumber(target), clear_visited);
 735
 736         return intToFormat(reachablesto);
 737 }
 738
 739
 740 vector<Format const *> const
 741 Converters::getReachable(string const & from, bool const only_viewable,
 742                          bool const clear_visited, set<string> const & excludes)
 743 {
 744         set<int> excluded_numbers;
 745
 746         set<string>::const_iterator sit = excludes.begin();
 747         set<string>::const_iterator const end = excludes.end();
 748         for (; sit != end; ++sit)
 749                 excluded_numbers.insert(formats.getNumber(*sit));
 750
 751         vector<int> const & reachables =
 752                 G_.getReachable(formats.getNumber(from),
 753                                 only_viewable,
 754                                 clear_visited,
 755                                 excluded_numbers);
 756
 757         return intToFormat(reachables);
 758 }
 759
 760
 761 bool Converters::isReachable(string const & from, string const & to)
 762 {
 763         return G_.isReachable(formats.getNumber(from),
 764                               formats.getNumber(to));
 765 }
 766
 767
 768 Graph::EdgePath Converters::getPath(string const & from, string const & to)
 769 {
 770         return G_.getPath(formats.getNumber(from),
 771                           formats.getNumber(to));
 772 }
 773
 774
 775 vector<Format const *> Converters::importableFormats()
 776 {
 777         vector<string> l = loaders();
 778         vector<Format const *> result = getReachableTo(l[0], true);
 779         vector<string>::const_iterator it = l.begin() + 1;
 780         vector<string>::const_iterator en = l.end();
 781         for (; it != en; ++it) {
 782                 vector<Format const *> r = getReachableTo(*it, false);
 783                 result.insert(result.end(), r.begin(), r.end());
 784         }
 785         return result;
 786 }
 787
 788
 789 vector<Format const *> Converters::exportableFormats(bool only_viewable)
 790 {
 791         vector<string> s = savers();
 792         vector<Format const *> result = getReachable(s[0], only_viewable, true);
 793         vector<string>::const_iterator it = s.begin() + 1;
 794         vector<string>::const_iterator en = s.end();
 795         for (; it != en; ++it) {
 796                 vector<Format const *> r =
 797                         getReachable(*it, only_viewable, false);
 798                 result.insert(result.end(), r.begin(), r.end());
 799         }
 800         return result;
 801 }
 802
 803
 804 vector<string> Converters::loaders() const
 805 {
 806         vector<string> v;
 807         v.push_back("lyx");
 808         v.push_back("text");
 809         v.push_back("textparagraph");
 810         return v;
 811 }
 812
 813
 814 vector<string> Converters::savers() const
 815 {
 816         vector<string> v;
 817         v.push_back("docbook");
 818         v.push_back("latex");
 819         v.push_back("literate");
 820         v.push_back("luatex");
 821         v.push_back("dviluatex");
 822         v.push_back("lyx");
 823         v.push_back("xhtml");
 824         v.push_back("pdflatex");
 825         v.push_back("platex");
 826         v.push_back("text");
 827         v.push_back("xetex");
 828         return v;
 829 }
 830
 831
 832 } // namespace lyx