src/insets/InsetBibtex.cpp

   1 /**
   2  * \file InsetBibtex.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Alejandro Aguilar Sierra
   7  * \author Richard Heck (BibTeX parser improvements)
   8  * \author Jürgen Spitzmüller
   9  *
  10  * Full author contact details are available in file CREDITS.
  11  */
  12
  13 #include <config.h>
  14
  15 #include "InsetBibtex.h"
  16
  17 #include "BiblioInfo.h"
  18 #include "Buffer.h"
  19 #include "BufferParams.h"
  20 #include "CiteEnginesList.h"
  21 #include "Cursor.h"
  22 #include "DispatchResult.h"
  23 #include "Encoding.h"
  24 #include "Exporter.h"
  25 #include "Format.h"
  26 #include "FuncRequest.h"
  27 #include "FuncStatus.h"
  28 #include "LaTeXFeatures.h"
  29 #include "output_xhtml.h"
  30 #include "OutputParams.h"
  31 #include "PDFOptions.h"
  32 #include "texstream.h"
  33 #include "TextClass.h"
  34
  35 #include "frontends/alert.h"
  36
  37 #include "support/convert.h"
  38 #include "support/debug.h"
  39 #include "support/docstream.h"
  40 #include "support/ExceptionMessage.h"
  41 #include "support/FileNameList.h"
  42 #include "support/filetools.h"
  43 #include "support/gettext.h"
  44 #include "support/lstrings.h"
  45 #include "support/os.h"
  46 #include "support/PathChanger.h"
  47 #include "support/textutils.h"
  48
  49 #include <limits>
  50
  51 using namespace std;
  52 using namespace lyx::support;
  53
  54 namespace lyx {
  55
  56 namespace Alert = frontend::Alert;
  57 namespace os = support::os;
  58
  59
  60 InsetBibtex::InsetBibtex(Buffer * buf, InsetCommandParams const & p)
  61         : InsetCommand(buf, p)
  62 {
  63         buffer().invalidateBibfileCache();
  64         buffer().removeBiblioTempFiles();
  65 }
  66
  67
  68 InsetBibtex::~InsetBibtex()
  69 {
  70         if (isBufferLoaded()) {
  71                 /* We do not use buffer() because Coverity believes that this
  72                  * may throw an exception. Actually this code path is not
  73                  * taken when buffer_ == 0 */
  74                 buffer_-> invalidateBibfileCache();
  75                 buffer_->removeBiblioTempFiles();
  76         }
  77 }
  78
  79
  80 ParamInfo const & InsetBibtex::findInfo(string const & /* cmdName */)
  81 {
  82         static ParamInfo param_info_;
  83         if (param_info_.empty()) {
  84                 param_info_.add("btprint", ParamInfo::LATEX_OPTIONAL);
  85                 param_info_.add("bibfiles", ParamInfo::LATEX_REQUIRED);
  86                 param_info_.add("options", ParamInfo::LYX_INTERNAL);
  87                 param_info_.add("biblatexopts", ParamInfo::LATEX_OPTIONAL);
  88         }
  89         return param_info_;
  90 }
  91
  92
  93 void InsetBibtex::doDispatch(Cursor & cur, FuncRequest & cmd)
  94 {
  95         switch (cmd.action()) {
  96
  97         case LFUN_INSET_EDIT:
  98                 editDatabases();
  99                 break;
 100
 101         case LFUN_INSET_MODIFY: {
 102                 InsetCommandParams p(BIBTEX_CODE);
 103                 try {
 104                         if (!InsetCommand::string2params(to_utf8(cmd.argument()), p)) {
 105                                 cur.noScreenUpdate();
 106                                 break;
 107                         }
 108                 } catch (ExceptionMessage const & message) {
 109                         if (message.type_ == WarningException) {
 110                                 Alert::warning(message.title_, message.details_);
 111                                 cur.noScreenUpdate();
 112                         } else
 113                                 throw;
 114                         break;
 115                 }
 116
 117                 cur.recordUndo();
 118                 setParams(p);
 119                 buffer().invalidateBibfileCache();
 120                 buffer().removeBiblioTempFiles();
 121                 cur.forceBufferUpdate();
 122                 break;
 123         }
 124
 125         default:
 126                 InsetCommand::doDispatch(cur, cmd);
 127                 break;
 128         }
 129 }
 130
 131
 132 bool InsetBibtex::getStatus(Cursor & cur, FuncRequest const & cmd,
 133                 FuncStatus & flag) const
 134 {
 135         switch (cmd.action()) {
 136         case LFUN_INSET_EDIT:
 137                 flag.setEnabled(true);
 138                 return true;
 139
 140         default:
 141                 return InsetCommand::getStatus(cur, cmd, flag);
 142         }
 143 }
 144
 145
 146 void InsetBibtex::editDatabases() const
 147 {
 148         vector<docstring> bibfilelist = getVectorFromString(getParam("bibfiles"));
 149
 150         if (bibfilelist.empty())
 151                 return;
 152
 153         int nr_databases = bibfilelist.size();
 154         if (nr_databases > 1) {
 155                         docstring const engine = usingBiblatex() ? _("Biblatex") : _("BibTeX");
 156                         docstring message = bformat(_("The %1$s[[BibTeX/Biblatex]] inset includes %2$s databases.\n"
 157                                                        "If you proceed, all of them will be opened."),
 158                                                         engine, convert<docstring>(nr_databases));
 159                         int const ret = Alert::prompt(_("Open Databases?"),
 160                                 message, 0, 1, _("&Cancel"), _("&Proceed"));
 161
 162                         if (ret == 0)
 163                                 return;
 164         }
 165
 166         vector<docstring>::const_iterator it = bibfilelist.begin();
 167         vector<docstring>::const_iterator en = bibfilelist.end();
 168         for (; it != en; ++it) {
 169                 FileName const bibfile = getBibTeXPath(*it, buffer());
 170                 theFormats().edit(buffer(), bibfile,
 171                      theFormats().getFormatFromFile(bibfile));
 172         }
 173 }
 174
 175
 176 bool InsetBibtex::usingBiblatex() const
 177 {
 178         return buffer().masterParams().useBiblatex();
 179 }
 180
 181
 182 docstring InsetBibtex::screenLabel() const
 183 {
 184         return usingBiblatex() ? _("Biblatex Generated Bibliography")
 185                                : _("BibTeX Generated Bibliography");
 186 }
 187
 188
 189 docstring InsetBibtex::toolTip(BufferView const & /*bv*/, int /*x*/, int /*y*/) const
 190 {
 191         docstring tip = _("Databases:");
 192         vector<docstring> bibfilelist = getVectorFromString(getParam("bibfiles"));
 193
 194         tip += "<ul>";
 195         if (bibfilelist.empty())
 196                 tip += "<li>" + _("none") + "</li>";
 197         else
 198                 for (docstring const & bibfile : bibfilelist)
 199                         tip += "<li>" + bibfile + "</li>";
 200         tip += "</ul>";
 201
 202         // Style-Options
 203         bool toc = false;
 204         docstring style = getParam("options"); // maybe empty! and with bibtotoc
 205         docstring bibtotoc = from_ascii("bibtotoc");
 206         if (prefixIs(style, bibtotoc)) {
 207                 toc = true;
 208                 if (contains(style, char_type(',')))
 209                         style = split(style, bibtotoc, char_type(','));
 210         }
 211
 212         docstring const btprint = getParam("btprint");
 213         if (!usingBiblatex()) {
 214                 tip += _("Style File:");
 215                 tip += "<ul><li>" + (style.empty() ? _("none") : style) + "</li></ul>";
 216
 217                 tip += _("Lists:") + " ";
 218                 if (btprint == "btPrintAll")
 219                         tip += _("all references");
 220                 else if (btprint == "btPrintNotCited")
 221                         tip += _("all uncited references");
 222                 else
 223                         tip += _("all cited references");
 224                 if (toc) {
 225                         tip += ", ";
 226                         tip += _("included in TOC");
 227                 }
 228                 if (!buffer().parent()
 229                     && buffer().params().multibib == "child") {
 230                         tip += "<br />";
 231                         tip += _("Note: This bibliography is not output, since bibliographies in the master file "
 232                                  "are not allowed with the setting 'Multiple bibliographies per child document'");
 233                 }
 234         } else {
 235                 tip += _("Lists:") + " ";
 236                 if (btprint == "bibbysection")
 237                         tip += _("all reference units");
 238                 else if (btprint == "btPrintAll")
 239                         tip += _("all references");
 240                 else
 241                         tip += _("all cited references");
 242                 if (toc) {
 243                         tip += ", ";
 244                         tip += _("included in TOC");
 245                 }
 246                 if (!getParam("biblatexopts").empty()) {
 247                         if (toc)
 248                                 tip += "<br />";
 249                         tip += _("Options: ") + getParam("biblatexopts");
 250                 }
 251         }
 252
 253         return tip;
 254 }
 255
 256
 257 void InsetBibtex::latex(otexstream & os, OutputParams const & runparams) const
 258 {
 259         // The sequence of the commands:
 260         // With normal BibTeX:
 261         // 1. \bibliographystyle{style}
 262         // 2. \addcontentsline{...} - if option bibtotoc set
 263         // 3. \bibliography{database}
 264         // With bibtopic:
 265         // 1. \bibliographystyle{style}
 266         // 2. \begin{btSect}{database}
 267         // 3. \btPrint{Cited|NotCited|All}
 268         // 4. \end{btSect}
 269         // With Biblatex:
 270         // \printbibliography[biblatexopts]
 271         // or
 272         // \bibbysection[biblatexopts] - if btprint is "bibbysection"
 273
 274         // chapterbib does not allow bibliographies in the master
 275         if (!usingBiblatex() && !runparams.is_child
 276             && buffer().params().multibib == "child")
 277                 return;
 278
 279         string style = to_utf8(getParam("options")); // maybe empty! and with bibtotoc
 280         string bibtotoc;
 281         if (prefixIs(style, "bibtotoc")) {
 282                 bibtotoc = "bibtotoc";
 283                 if (contains(style, ','))
 284                         style = split(style, bibtotoc, ',');
 285         }
 286
 287         if (usingBiblatex()) {
 288                 // Options
 289                 string opts = to_utf8(getParam("biblatexopts"));
 290                 // bibtotoc-Option
 291                 if (!bibtotoc.empty())
 292                         opts = opts.empty() ? "heading=bibintoc" : "heading=bibintoc," + opts;
 293                 // The bibliography command
 294                 docstring btprint = getParam("btprint");
 295                 if (btprint == "btPrintAll")
 296                         os << "\\nocite{*}\n";
 297                 if (btprint == "bibbysection" && !buffer().masterParams().multibib.empty())
 298                         os << "\\bibbysection";
 299                 else
 300                         os << "\\printbibliography";
 301                 if (!opts.empty())
 302                         os << "[" << opts << "]";
 303                 os << "\n";
 304         } else {// using BibTeX
 305                 // Database(s)
 306                 vector<docstring> const db_out =
 307                         buffer().prepareBibFilePaths(runparams, getBibFiles(), false);
 308                 // Style options
 309                 if (style == "default")
 310                         style = buffer().masterParams().defaultBiblioStyle();
 311                 if (!style.empty() && !buffer().masterParams().useBibtopic()) {
 312                         string base = buffer().masterBuffer()->prepareFileNameForLaTeX(style, ".bst", runparams.nice);
 313                         FileName const try_in_file =
 314                                 makeAbsPath(base + ".bst", buffer().filePath());
 315                         bool const not_from_texmf = try_in_file.isReadableFile();
 316                         // If this style does not come from texmf and we are not
 317                         // exporting to .tex copy it to the tmp directory.
 318                         // This prevents problems with spaces and 8bit characters
 319                         // in the file name.
 320                         if (!runparams.inComment && !runparams.dryrun && !runparams.nice &&
 321                             not_from_texmf) {
 322                                 // use new style name
 323                                 DocFileName const in_file = DocFileName(try_in_file);
 324                                 base = removeExtension(in_file.mangledFileName());
 325                                 FileName const out_file = makeAbsPath(base + ".bst",
 326                                                 buffer().masterBuffer()->temppath());
 327                                 bool const success = in_file.copyTo(out_file);
 328                                 if (!success) {
 329                                         LYXERR0("Failed to copy '" << in_file
 330                                                << "' to '" << out_file << "'");
 331                                 }
 332                         }
 333                         // FIXME UNICODE
 334                         os << "\\bibliographystyle{"
 335                            << from_utf8(latex_path(buffer().prepareFileNameForLaTeX(base, ".bst", runparams.nice)))
 336                            << "}\n";
 337                 }
 338                 // Warn about spaces in bst path. Warn only once.
 339                 static bool warned_about_bst_spaces = false;
 340                 if (!warned_about_bst_spaces && runparams.nice && contains(style, ' ')) {
 341                         warned_about_bst_spaces = true;
 342                         Alert::warning(_("Export Warning!"),
 343                                        _("There are spaces in the path to your BibTeX style file.\n"
 344                                                       "BibTeX will be unable to find it."));
 345                 }
 346                 // Handle the bibtopic case
 347                 if (!db_out.empty() && buffer().masterParams().useBibtopic()) {
 348                         os << "\\begin{btSect}";
 349                         if (!style.empty())
 350                                 os << "[" << style << "]";
 351                         os << "{" << getStringFromVector(db_out) << "}\n";
 352                         docstring btprint = getParam("btprint");
 353                         if (btprint.empty())
 354                                 // default
 355                                 btprint = from_ascii("btPrintCited");
 356                         os << "\\" << btprint << "\n"
 357                            << "\\end{btSect}\n";
 358                 }
 359                 // bibtotoc option
 360                 if (!bibtotoc.empty() && !buffer().masterParams().useBibtopic()) {
 361                         // set label for hyperref, see http://www.lyx.org/trac/ticket/6470
 362                         if (buffer().masterParams().pdfoptions().use_hyperref)
 363                                         os << "\\phantomsection";
 364                         if (buffer().masterParams().documentClass().hasLaTeXLayout("chapter"))
 365                                 os << "\\addcontentsline{toc}{chapter}{\\bibname}";
 366                         else if (buffer().masterParams().documentClass().hasLaTeXLayout("section"))
 367                                 os << "\\addcontentsline{toc}{section}{\\refname}";
 368                 }
 369                 // The bibliography command
 370                 if (!db_out.empty() && !buffer().masterParams().useBibtopic()) {
 371                         docstring btprint = getParam("btprint");
 372                         if (btprint == "btPrintAll") {
 373                                 os << "\\nocite{*}\n";
 374                         }
 375                         os << "\\bibliography{" << getStringFromVector(db_out) << "}\n";
 376                 }
 377         }
 378 }
 379
 380
 381 support::FileNamePairList InsetBibtex::getBibFiles() const
 382 {
 383         FileName path(buffer().filePath());
 384         support::PathChanger p(path);
 385
 386         // We need to store both the real FileName and the way it is entered
 387         // (with full path, rel path or as a single file name).
 388         // The latter is needed for biblatex's central bibfile macro.
 389         support::FileNamePairList vec;
 390
 391         vector<docstring> bibfilelist = getVectorFromString(getParam("bibfiles"));
 392         vector<docstring>::const_iterator it = bibfilelist.begin();
 393         vector<docstring>::const_iterator en = bibfilelist.end();
 394         for (; it != en; ++it) {
 395                 FileName const file = getBibTeXPath(*it, buffer());
 396
 397                 if (!file.empty())
 398                         vec.push_back(make_pair(*it, file));
 399                 else
 400                         LYXERR0("Couldn't find " + to_utf8(*it) + " in InsetBibtex::getBibFiles()!");
 401         }
 402
 403         return vec;
 404
 405 }
 406
 407 namespace {
 408
 409         // methods for parsing bibtex files
 410
 411         typedef map<docstring, docstring> VarMap;
 412
 413         /// remove whitespace characters, optionally a single comma,
 414         /// and further whitespace characters from the stream.
 415         /// @return true if a comma was found, false otherwise
 416         ///
 417         bool removeWSAndComma(ifdocstream & ifs) {
 418                 char_type ch;
 419
 420                 if (!ifs)
 421                         return false;
 422
 423                 // skip whitespace
 424                 do {
 425                         ifs.get(ch);
 426                 } while (ifs && isSpace(ch));
 427
 428                 if (!ifs)
 429                         return false;
 430
 431                 if (ch != ',') {
 432                         ifs.putback(ch);
 433                         return false;
 434                 }
 435
 436                 // skip whitespace
 437                 do {
 438                         ifs.get(ch);
 439                 } while (ifs && isSpace(ch));
 440
 441                 if (ifs) {
 442                         ifs.putback(ch);
 443                 }
 444
 445                 return true;
 446         }
 447
 448
 449         enum charCase {
 450                 makeLowerCase,
 451                 keepCase
 452         };
 453
 454         /// remove whitespace characters, read characer sequence
 455         /// not containing whitespace characters or characters in
 456         /// delimChars, and remove further whitespace characters.
 457         ///
 458         /// @return true if a string of length > 0 could be read.
 459         ///
 460         bool readTypeOrKey(docstring & val, ifdocstream & ifs,
 461                 docstring const & delimChars, docstring const & illegalChars,
 462                 charCase chCase) {
 463
 464                 char_type ch;
 465
 466                 val.clear();
 467
 468                 if (!ifs)
 469                         return false;
 470
 471                 // skip whitespace
 472                 do {
 473                         ifs.get(ch);
 474                 } while (ifs && isSpace(ch));
 475
 476                 if (!ifs)
 477                         return false;
 478
 479                 // read value
 480                 bool legalChar = true;
 481                 while (ifs && !isSpace(ch) &&
 482                                                  delimChars.find(ch) == docstring::npos &&
 483                                                  (legalChar = (illegalChars.find(ch) == docstring::npos))
 484                                         )
 485                 {
 486                         if (chCase == makeLowerCase)
 487                                 val += lowercase(ch);
 488                         else
 489                                 val += ch;
 490                         ifs.get(ch);
 491                 }
 492
 493                 if (!legalChar) {
 494                         ifs.putback(ch);
 495                         return false;
 496                 }
 497
 498                 // skip whitespace
 499                 while (ifs && isSpace(ch)) {
 500                         ifs.get(ch);
 501                 }
 502
 503                 if (ifs) {
 504                         ifs.putback(ch);
 505                 }
 506
 507                 return val.length() > 0;
 508         }
 509
 510         /// read subsequent bibtex values that are delimited with a #-character.
 511         /// Concatenate all parts and replace names with the associated string in
 512         /// the variable strings.
 513         /// @return true if reading was successfull (all single parts were delimited
 514         /// correctly)
 515         bool readValue(docstring & val, ifdocstream & ifs, const VarMap & strings) {
 516
 517                 char_type ch;
 518
 519                 val.clear();
 520
 521                 if (!ifs)
 522                         return false;
 523
 524                 do {
 525                         // skip whitespace
 526                         do {
 527                                 ifs.get(ch);
 528                         } while (ifs && isSpace(ch));
 529
 530                         if (!ifs)
 531                                 return false;
 532
 533                         // check for field type
 534                         if (isDigitASCII(ch)) {
 535
 536                                 // read integer value
 537                                 do {
 538                                         val += ch;
 539                                         ifs.get(ch);
 540                                 } while (ifs && isDigitASCII(ch));
 541
 542                                 if (!ifs)
 543                                         return false;
 544
 545                         } else if (ch == '"' || ch == '{') {
 546                                 // set end delimiter
 547                                 char_type delim = ch == '"' ? '"': '}';
 548
 549                                 // Skip whitespace
 550                                 do {
 551                                         ifs.get(ch);
 552                                 } while (ifs && isSpace(ch));
 553
 554                                 if (!ifs)
 555                                         return false;
 556
 557                                 // We now have the first non-whitespace character
 558                                 // We'll collapse adjacent whitespace.
 559                                 bool lastWasWhiteSpace = false;
 560
 561                                 // inside this delimited text braces must match.
 562                                 // Thus we can have a closing delimiter only
 563                                 // when nestLevel == 0
 564                                 int nestLevel = 0;
 565
 566                                 while (ifs && (nestLevel > 0 || ch != delim)) {
 567                                         if (isSpace(ch)) {
 568                                                 lastWasWhiteSpace = true;
 569                                                 ifs.get(ch);
 570                                                 continue;
 571                                         }
 572                                         // We output the space only after we stop getting
 573                                         // whitespace so as not to output any whitespace
 574                                         // at the end of the value.
 575                                         if (lastWasWhiteSpace) {
 576                                                 lastWasWhiteSpace = false;
 577                                                 val += ' ';
 578                                         }
 579
 580                                         val += ch;
 581
 582                                         // update nesting level
 583                                         switch (ch) {
 584                                                 case '{':
 585                                                         ++nestLevel;
 586                                                         break;
 587                                                 case '}':
 588                                                         --nestLevel;
 589                                                         if (nestLevel < 0)
 590                                                                 return false;
 591                                                         break;
 592                                         }
 593
 594                                         if (ifs)
 595                                                 ifs.get(ch);
 596                                 }
 597
 598                                 if (!ifs)
 599                                         return false;
 600
 601                                 // FIXME Why is this here?
 602                                 ifs.get(ch);
 603
 604                                 if (!ifs)
 605                                         return false;
 606
 607                         } else {
 608
 609                                 // reading a string name
 610                                 docstring strName;
 611
 612                                 while (ifs && !isSpace(ch) && ch != '#' && ch != ',' && ch != '}' && ch != ')') {
 613                                         strName += lowercase(ch);
 614                                         ifs.get(ch);
 615                                 }
 616
 617                                 if (!ifs)
 618                                         return false;
 619
 620                                 // replace the string with its assigned value or
 621                                 // discard it if it's not assigned
 622                                 if (strName.length()) {
 623                                         VarMap::const_iterator pos = strings.find(strName);
 624                                         if (pos != strings.end()) {
 625                                                 val += pos->second;
 626                                         }
 627                                 }
 628                         }
 629
 630                         // skip WS
 631                         while (ifs && isSpace(ch)) {
 632                                 ifs.get(ch);
 633                         }
 634
 635                         if (!ifs)
 636                                 return false;
 637
 638                         // continue reading next value on concatenate with '#'
 639                 } while (ch == '#');
 640
 641                 ifs.putback(ch);
 642
 643                 return true;
 644         }
 645 } // namespace
 646
 647
 648 void InsetBibtex::collectBibKeys(InsetIterator const & /*di*/, FileNameList & checkedFiles) const
 649 {
 650         parseBibTeXFiles(checkedFiles);
 651 }
 652
 653
 654 void InsetBibtex::parseBibTeXFiles(FileNameList & checkedFiles) const
 655 {
 656         // This bibtex parser is a first step to parse bibtex files
 657         // more precisely.
 658         //
 659         // - it reads the whole bibtex entry and does a syntax check
 660         //   (matching delimiters, missing commas,...
 661         // - it recovers from errors starting with the next @-character
 662         // - it reads @string definitions and replaces them in the
 663         //   field values.
 664         // - it accepts more characters in keys or value names than
 665         //   bibtex does.
 666         //
 667         // Officially bibtex does only support ASCII, but in practice
 668         // you can use the encoding of the main document as long as
 669         // some elements like keys and names are pure ASCII. Therefore
 670         // we convert the file from the buffer encoding.
 671         // We don't restrict keys to ASCII in LyX, since our own
 672         // InsetBibitem can generate non-ASCII keys, and nonstandard
 673         // 8bit clean bibtex forks exist.
 674
 675         BiblioInfo keylist;
 676
 677         support::FileNamePairList const files = getBibFiles();
 678         support::FileNamePairList::const_iterator it = files.begin();
 679         support::FileNamePairList::const_iterator en = files.end();
 680         for (; it != en; ++ it) {
 681                 FileName const bibfile = it->second;
 682                 if (find(checkedFiles.begin(), checkedFiles.end(), bibfile) != checkedFiles.end())
 683                         // already checked this one. Skip.
 684                         continue;
 685                 else
 686                         // record that we check this.
 687                         checkedFiles.push_back(bibfile);
 688                 ifdocstream ifs(bibfile.toFilesystemEncoding().c_str(),
 689                         ios_base::in, buffer().masterParams().encoding().iconvName());
 690
 691                 char_type ch;
 692                 VarMap strings;
 693
 694                 while (ifs) {
 695
 696                         ifs.get(ch);
 697                         if (!ifs)
 698                                 break;
 699
 700                         if (ch != '@')
 701                                 continue;
 702
 703                         docstring entryType;
 704
 705                         if (!readTypeOrKey(entryType, ifs, from_ascii("{("), docstring(), makeLowerCase)) {
 706                                 lyxerr << "BibTeX Parser: Error reading entry type." << std::endl;
 707                                 continue;
 708                         }
 709
 710                         if (!ifs) {
 711                                 lyxerr << "BibTeX Parser: Unexpected end of file." << std::endl;
 712                                 continue;
 713                         }
 714
 715                         if (entryType == from_ascii("comment")) {
 716                                 ifs.ignore(numeric_limits<int>::max(), '\n');
 717                                 continue;
 718                         }
 719
 720                         ifs.get(ch);
 721                         if (!ifs) {
 722                                 lyxerr << "BibTeX Parser: Unexpected end of file." << std::endl;
 723                                 break;
 724                         }
 725
 726                         if ((ch != '(') && (ch != '{')) {
 727                                 lyxerr << "BibTeX Parser: Invalid entry delimiter." << std::endl;
 728                                 ifs.putback(ch);
 729                                 continue;
 730                         }
 731
 732                         // process the entry
 733                         if (entryType == from_ascii("string")) {
 734
 735                                 // read string and add it to the strings map
 736                                 // (or replace it's old value)
 737                                 docstring name;
 738                                 docstring value;
 739
 740                                 if (!readTypeOrKey(name, ifs, from_ascii("="), from_ascii("#{}(),"), makeLowerCase)) {
 741                                         lyxerr << "BibTeX Parser: Error reading string name." << std::endl;
 742                                         continue;
 743                                 }
 744
 745                                 if (!ifs) {
 746                                         lyxerr << "BibTeX Parser: Unexpected end of file." << std::endl;
 747                                         continue;
 748                                 }
 749
 750                                 // next char must be an equal sign
 751                                 ifs.get(ch);
 752                                 if (!ifs || ch != '=') {
 753                                         lyxerr << "BibTeX Parser: No `=' after string name: " <<
 754                                                         name << "." << std::endl;
 755                                         continue;
 756                                 }
 757
 758                                 if (!readValue(value, ifs, strings)) {
 759                                         lyxerr << "BibTeX Parser: Unable to read value for string: " <<
 760                                                         name << "." << std::endl;
 761                                         continue;
 762                                 }
 763
 764                                 strings[name] = value;
 765
 766                         } else if (entryType == from_ascii("preamble")) {
 767
 768                                 // preamble definitions are discarded.
 769                                 // can they be of any use in lyx?
 770                                 docstring value;
 771
 772                                 if (!readValue(value, ifs, strings)) {
 773                                         lyxerr << "BibTeX Parser: Unable to read preamble value." << std::endl;
 774                                         continue;
 775                                 }
 776
 777                         } else {
 778
 779                                 // Citation entry. Try to read the key.
 780                                 docstring key;
 781
 782                                 if (!readTypeOrKey(key, ifs, from_ascii(","), from_ascii("}"), keepCase)) {
 783                                         lyxerr << "BibTeX Parser: Unable to read key for entry type:" <<
 784                                                         entryType << "." << std::endl;
 785                                         continue;
 786                                 }
 787
 788                                 if (!ifs) {
 789                                         lyxerr << "BibTeX Parser: Unexpected end of file." << std::endl;
 790                                         continue;
 791                                 }
 792
 793                                 /////////////////////////////////////////////
 794                                 // now we have a key, so we will add an entry
 795                                 // (even if it's empty, as bibtex does)
 796                                 //
 797                                 // we now read the field = value pairs.
 798                                 // all items must be separated by a comma. If
 799                                 // it is missing the scanning of this entry is
 800                                 // stopped and the next is searched.
 801                                 docstring name;
 802                                 docstring value;
 803                                 docstring data;
 804                                 BibTeXInfo keyvalmap(key, entryType);
 805
 806                                 bool readNext = removeWSAndComma(ifs);
 807
 808                                 while (ifs && readNext) {
 809
 810                                         // read field name
 811                                         if (!readTypeOrKey(name, ifs, from_ascii("="),
 812                                                            from_ascii("{}(),"), makeLowerCase) || !ifs)
 813                                                 break;
 814
 815                                         // next char must be an equal sign
 816                                         // FIXME Whitespace??
 817                                         ifs.get(ch);
 818                                         if (!ifs) {
 819                                                 lyxerr << "BibTeX Parser: Unexpected end of file." << std::endl;
 820                                                 break;
 821                                         }
 822                                         if (ch != '=') {
 823                                                 lyxerr << "BibTeX Parser: Missing `=' after field name: " <<
 824                                                                 name << ", for key: " << key << "." << std::endl;
 825                                                 ifs.putback(ch);
 826                                                 break;
 827                                         }
 828
 829                                         // read field value
 830                                         if (!readValue(value, ifs, strings)) {
 831                                                 lyxerr << "BibTeX Parser: Unable to read value for field: " <<
 832                                                                 name << ", for key: " << key << "." << std::endl;
 833                                                 break;
 834                                         }
 835
 836                                         keyvalmap[name] = value;
 837                                         data += "\n\n" + value;
 838                                         keylist.addFieldName(name);
 839                                         readNext = removeWSAndComma(ifs);
 840                                 }
 841
 842                                 // add the new entry
 843                                 keylist.addEntryType(entryType);
 844                                 keyvalmap.setAllData(data);
 845                                 keylist[key] = keyvalmap;
 846                         } //< else (citation entry)
 847                 } //< searching '@'
 848         } //< for loop over files
 849
 850         buffer().addBiblioInfo(keylist);
 851 }
 852
 853
 854 FileName InsetBibtex::getBibTeXPath(docstring const & filename, Buffer const & buf)
 855 {
 856         string texfile = changeExtension(to_utf8(filename), "bib");
 857         // note that, if the filename can be found directly from the path,
 858         // findtexfile will just return a FileName object for that path.
 859         FileName file(findtexfile(texfile, "bib"));
 860         if (file.empty())
 861                 file = FileName(makeAbsPath(texfile, buf.filePath()));
 862         return file;
 863 }
 864
 865
 866 bool InsetBibtex::addDatabase(docstring const & db)
 867 {
 868         docstring bibfiles = getParam("bibfiles");
 869         if (tokenPos(bibfiles, ',', db) != -1)
 870                 return false;
 871         if (!bibfiles.empty())
 872                 bibfiles += ',';
 873         setParam("bibfiles", bibfiles + db);
 874         return true;
 875 }
 876
 877
 878 bool InsetBibtex::delDatabase(docstring const & db)
 879 {
 880         docstring bibfiles = getParam("bibfiles");
 881         if (contains(bibfiles, db)) {
 882                 int const n = tokenPos(bibfiles, ',', db);
 883                 docstring bd = db;
 884                 if (n > 0) {
 885                         // this is not the first database
 886                         docstring tmp = ',' + bd;
 887                         setParam("bibfiles", subst(bibfiles, tmp, docstring()));
 888                 } else if (n == 0)
 889                         // this is the first (or only) database
 890                         setParam("bibfiles", split(bibfiles, bd, ','));
 891                 else
 892                         return false;
 893         }
 894         return true;
 895 }
 896
 897
 898 void InsetBibtex::validate(LaTeXFeatures & features) const
 899 {
 900         BufferParams const & mparams = features.buffer().masterParams();
 901         if (mparams.useBibtopic())
 902                 features.require("bibtopic");
 903         else if (!mparams.useBiblatex() && mparams.multibib == "child")
 904                 features.require("chapterbib");
 905         // FIXME XHTML
 906         // It'd be better to be able to get this from an InsetLayout, but at present
 907         // InsetLayouts do not seem really to work for things that aren't InsetTexts.
 908         if (features.runparams().flavor == OutputParams::HTML)
 909                 features.addCSSSnippet("div.bibtexentry { margin-left: 2em; text-indent: -2em; }\n"
 910                         "span.bibtexlabel:before{ content: \"[\"; }\n"
 911                         "span.bibtexlabel:after{ content: \"] \"; }");
 912 }
 913
 914
 915 int InsetBibtex::plaintext(odocstringstream & os,
 916        OutputParams const & op, size_t max_length) const
 917 {
 918         docstring const reflabel = buffer().B_("References");
 919
 920         // We could output more information here, e.g., what databases are included
 921         // and information about options. But I don't necessarily see any reason to
 922         // do this right now.
 923         if (op.for_tooltip || op.for_toc || op.for_search) {
 924                 os << '[' << reflabel << ']' << '\n';
 925                 return PLAINTEXT_NEWLINE;
 926         }
 927
 928         BiblioInfo bibinfo = buffer().masterBibInfo();
 929         bibinfo.makeCitationLabels(buffer());
 930         vector<docstring> const & cites = bibinfo.citedEntries();
 931
 932         size_t start_size = os.str().size();
 933         docstring refoutput;
 934         refoutput += reflabel + "\n\n";
 935
 936         // Tell BiblioInfo our purpose
 937         CiteItem ci;
 938         ci.context = CiteItem::Export;
 939
 940         // Now we loop over the entries
 941         vector<docstring>::const_iterator vit = cites.begin();
 942         vector<docstring>::const_iterator const ven = cites.end();
 943         for (; vit != ven; ++vit) {
 944                 if (start_size + refoutput.size() >= max_length)
 945                         break;
 946                 BiblioInfo::const_iterator const biit = bibinfo.find(*vit);
 947                 if (biit == bibinfo.end())
 948                         continue;
 949                 BibTeXInfo const & entry = biit->second;
 950                 refoutput += "[" + entry.label() + "] ";
 951                 // FIXME Right now, we are calling BibInfo::getInfo on the key,
 952                 // which will give us all the cross-referenced info. But for every
 953                 // entry, so there's a lot of repitition. This should be fixed.
 954                 refoutput += bibinfo.getInfo(entry.key(), buffer(), ci) + "\n\n";
 955         }
 956         os << refoutput;
 957         return refoutput.size();
 958 }
 959
 960
 961 // FIXME
 962 // docstring InsetBibtex::entriesAsXHTML(vector<docstring> const & entries)
 963 // And then here just: entriesAsXHTML(buffer().masterBibInfo().citedEntries())
 964 docstring InsetBibtex::xhtml(XHTMLStream & xs, OutputParams const &) const
 965 {
 966         BiblioInfo const & bibinfo = buffer().masterBibInfo();
 967         bool const all_entries = getParam("btprint") == "btPrintAll";
 968         vector<docstring> const & cites =
 969             all_entries ? bibinfo.getKeys() : bibinfo.citedEntries();
 970
 971         docstring const reflabel = buffer().B_("References");
 972
 973         // tell BiblioInfo our purpose
 974         CiteItem ci;
 975         ci.context = CiteItem::Export;
 976         ci.richtext = true;
 977         ci.max_key_size = UINT_MAX;
 978
 979         xs << html::StartTag("h2", "class='bibtex'")
 980                 << reflabel
 981                 << html::EndTag("h2")
 982                 << html::StartTag("div", "class='bibtex'");
 983
 984         // Now we loop over the entries
 985         vector<docstring>::const_iterator vit = cites.begin();
 986         vector<docstring>::const_iterator const ven = cites.end();
 987         for (; vit != ven; ++vit) {
 988                 BiblioInfo::const_iterator const biit = bibinfo.find(*vit);
 989                 if (biit == bibinfo.end())
 990                         continue;
 991
 992                 BibTeXInfo const & entry = biit->second;
 993                 string const attr = "class='bibtexentry' id='LyXCite-"
 994                     + to_utf8(html::cleanAttr(entry.key())) + "'";
 995                 xs << html::StartTag("div", attr);
 996
 997                 // don't print labels if we're outputting all entries
 998                 if (!all_entries) {
 999                         xs << html::StartTag("span", "class='bibtexlabel'")
1000                                 << entry.label()
1001                                 << html::EndTag("span");
1002                 }
1003
1004                 // FIXME Right now, we are calling BibInfo::getInfo on the key,
1005                 // which will give us all the cross-referenced info. But for every
1006                 // entry, so there's a lot of repitition. This should be fixed.
1007                 xs << html::StartTag("span", "class='bibtexinfo'")
1008                    << XHTMLStream::ESCAPE_AND
1009                    << bibinfo.getInfo(entry.key(), buffer(), ci)
1010                    << html::EndTag("span")
1011                    << html::EndTag("div")
1012                    << html::CR();
1013         }
1014         xs << html::EndTag("div");
1015         return docstring();
1016 }
1017
1018
1019 void InsetBibtex::write(ostream & os) const
1020 {
1021         params().Write(os, &buffer());
1022 }
1023
1024
1025 string InsetBibtex::contextMenuName() const
1026 {
1027         return "context-bibtex";
1028 }
1029
1030
1031 } // namespace lyx