src/tex2lyx/preamble.cpp

   1 /**
   2  * \file preamble.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author André Pönitz
   7  * \author Uwe Stöhr
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 // {[(
  13
  14 #include <config.h>
  15
  16 #include "tex2lyx.h"
  17
  18 #include "Layout.h"
  19 #include "Lexer.h"
  20 #include "TextClass.h"
  21 #include "support/convert.h"
  22 #include "support/filetools.h"
  23 #include "support/lstrings.h"
  24
  25 #include <algorithm>
  26 #include <iostream>
  27 #include <sstream>
  28 #include <string>
  29 #include <vector>
  30 #include <map>
  31
  32
  33 namespace lyx {
  34
  35 using std::istringstream;
  36 using std::ostream;
  37 using std::ostringstream;
  38 using std::string;
  39 using std::vector;
  40 using std::cerr;
  41 using std::endl;
  42 using std::find;
  43
  44 using support::FileName;
  45 using support::libFileSearch;
  46 using support::isStrDbl;
  47
  48 // special columntypes
  49 extern std::map<char, int> special_columns;
  50
  51 std::map<string, vector<string> > used_packages;
  52
  53 // needed to handle encodings with babel
  54 bool one_language = true;
  55
  56 // to avoid that the babel options overwrite the documentclass options
  57 bool documentclass_language;
  58
  59 namespace {
  60
  61 const char * const known_languages[] = { "afrikaans", "american", "arabic",
  62 "austrian", "bahasa", "basque", "belarusian", "brazil", "breton", "british",
  63 "bulgarian", "canadian", "canadien", "catalan", "croatian", "czech", "danish",
  64 "dutch", "english", "esperanto", "estonian", "finnish", "francais", "french",
  65 "frenchb", "frenchle", "frenchpro", "galician", "german", "germanb", "greek",
  66 "hebrew", "icelandic", "irish", "italian", "lsorbian", "magyar", "naustrian",
  67 "ngerman", "ngermanb", "norsk", "nynorsk", "polish", "portuges", "romanian",
  68 "russian", "russianb", "scottish", "serbian", "slovak", "slovene", "spanish",
  69 "swedish", "thai", "turkish", "ukraineb", "ukrainian", "usorbian", "welsh", 0};
  70
  71 //note this when updating to lyxformat 305:
  72 //bahasai, indonesian, and indon = equal to bahasa
  73 //malay, and meyalu = equal to bahasam
  74
  75 const char * const known_french_languages[] = {"french", "frenchb", "francais",
  76                                                 "frenchle", "frenchpro", 0};
  77 const char * const known_german_languages[] = {"german", "germanb", 0};
  78 const char * const known_ngerman_languages[] = {"ngerman", "ngermanb", 0};
  79 const char * const known_russian_languages[] = {"russian", "russianb", 0};
  80 const char * const known_ukrainian_languages[] = {"ukrainian", "ukraineb", 0};
  81
  82 char const * const known_fontsizes[] = { "10pt", "11pt", "12pt", 0 };
  83
  84 const char * const known_roman_fonts[] = { "ae", "bookman", "charter",
  85 "cmr", "fourier", "lmodern", "mathpazo", "mathptmx", "newcent", 0};
  86
  87 const char * const known_sans_fonts[] = { "avant", "berasans", "cmbr", "cmss",
  88 "helvet", "lmss", 0};
  89
  90 const char * const known_typewriter_fonts[] = { "beramono", "cmtl", "cmtt",
  91 "courier", "lmtt", "luximono", "fourier", "lmodern", "mathpazo", "mathptmx",
  92 "newcent", 0};
  93
  94 // some ugly stuff
  95 ostringstream h_preamble;
  96 string h_textclass               = "article";
  97 string h_options                 = string();
  98 string h_language                = "english";
  99 string h_inputencoding           = "auto";
 100 string h_font_roman              = "default";
 101 string h_font_sans               = "default";
 102 string h_font_typewriter         = "default";
 103 string h_font_default_family     = "default";
 104 string h_font_sc                 = "false";
 105 string h_font_osf                = "false";
 106 string h_font_sf_scale           = "100";
 107 string h_font_tt_scale           = "100";
 108 string h_graphics                = "default";
 109 string h_paperfontsize           = "default";
 110 string h_spacing                 = "single";
 111 string h_papersize               = "default";
 112 string h_use_geometry            = "false";
 113 string h_use_amsmath             = "0";
 114 string h_cite_engine             = "basic";
 115 string h_use_bibtopic            = "false";
 116 string h_paperorientation        = "portrait";
 117 string h_secnumdepth             = "3";
 118 string h_tocdepth                = "3";
 119 string h_paragraph_separation    = "indent";
 120 string h_defskip                 = "medskip";
 121 string h_quotes_language         = "english";
 122 string h_papercolumns            = "1";
 123 string h_papersides              = string();
 124 string h_paperpagestyle          = "default";
 125 string h_tracking_changes        = "false";
 126 string h_output_changes          = "false";
 127
 128
 129 void handle_opt(vector<string> & opts, char const * const * what, string & target)
 130 {
 131         if (opts.empty())
 132                 return;
 133
 134         // the last language option is the document language (for babel and LyX)
 135         // the last size option is the document font size
 136         vector<string>::iterator it;
 137         vector<string>::iterator position = opts.begin();
 138         for (; *what; ++what) {
 139                 it = find(opts.begin(), opts.end(), *what);
 140                 if (it != opts.end()) {
 141                         documentclass_language = true;
 142                         if (it >= position) {
 143                                 target = *what;
 144                                 position = it;
 145                         }
 146                 }
 147         }
 148 }
 149
 150
 151 void delete_opt(vector<string> & opts, char const * const * what)
 152 {
 153         if (opts.empty())
 154                 return;
 155
 156         // remove found options from the list
 157         // do this after handle_opt to avoid potential memory leaks and to be able
 158         // to find in every case the last language option
 159         vector<string>::iterator it;
 160         for (; *what; ++what) {
 161                 it = find(opts.begin(), opts.end(), *what);
 162                 if (it != opts.end())
 163                         opts.erase(it);
 164         }
 165 }
 166
 167
 168 /*!
 169  * Split a package options string (keyval format) into a vector.
 170  * Example input:
 171  *   authorformat=smallcaps,
 172  *   commabeforerest,
 173  *   titleformat=colonsep,
 174  *   bibformat={tabular,ibidem,numbered}
 175  */
 176 vector<string> split_options(string const & input)
 177 {
 178         vector<string> options;
 179         string option;
 180         Parser p(input);
 181         while (p.good()) {
 182                 Token const & t = p.get_token();
 183                 if (t.asInput() == ",") {
 184                         options.push_back(trim(option));
 185                         option.erase();
 186                 } else if (t.asInput() == "=") {
 187                         option += '=';
 188                         p.skip_spaces(true);
 189                         if (p.next_token().asInput() == "{")
 190                                 option += '{' + p.getArg('{', '}') + '}';
 191                 } else if (t.cat() != catSpace)
 192                         option += t.asInput();
 193         }
 194
 195         if (!option.empty())
 196                 options.push_back(trim(option));
 197
 198         return options;
 199 }
 200
 201
 202 /*!
 203  * Add package \p name with options \p options to used_packages.
 204  * Remove options from \p options that we don't want to output.
 205  */
 206 void add_package(string const & name, vector<string> & options)
 207 {
 208         // every package inherits the global options
 209         if (used_packages.find(name) == used_packages.end())
 210                 used_packages[name] = split_options(h_options);
 211
 212         vector<string> & v = used_packages[name];
 213         v.insert(v.end(), options.begin(), options.end());
 214         if (name == "jurabib") {
 215                 // Don't output the order argument (see the cite command
 216                 // handling code in text.cpp).
 217                 vector<string>::iterator end =
 218                         remove(options.begin(), options.end(), "natbiborder");
 219                 end = remove(options.begin(), end, "jurabiborder");
 220                 options.erase(end, options.end());
 221         }
 222 }
 223
 224
 225 // Given is a string like "scaled=0.9", return 0.9 * 100
 226 string const scale_as_percentage(string const & scale)
 227 {
 228         string::size_type pos = scale.find('=');
 229         if (pos != string::npos) {
 230                 string value = scale.substr(pos + 1);
 231                 if (isStrDbl(value))
 232                         return convert<string>(100 * convert<double>(value));
 233         }
 234         // If the input string didn't match our expectations.
 235         // return the default value "100"
 236         return "100";
 237 }
 238
 239
 240 void handle_package(string const & name, string const & opts)
 241 {
 242         vector<string> options = split_options(opts);
 243         add_package(name, options);
 244         string scale;
 245
 246         // roman fonts
 247         if (is_known(name, known_roman_fonts))
 248                 h_font_roman = name;
 249         if (name == "fourier") {
 250                 h_font_roman = "utopia";
 251                 // when font uses real small capitals
 252                 if (opts == "expert")
 253                         h_font_sc = "true";
 254         }
 255         if (name == "mathpazo")
 256                 h_font_roman = "palatino";
 257         if (name == "mathptmx")
 258                 h_font_roman = "times";
 259         // sansserif fonts
 260         if (is_known(name, known_sans_fonts)) {
 261                 h_font_sans = name;
 262                 if (!opts.empty()) {
 263                         scale = opts;
 264                         h_font_sf_scale = scale_as_percentage(scale);
 265                 }
 266         }
 267         // typewriter fonts
 268         if (is_known(name, known_typewriter_fonts)) {
 269                 h_font_typewriter = name;
 270                 if (!opts.empty()) {
 271                         scale = opts;
 272                         h_font_tt_scale = scale_as_percentage(scale);
 273                 }
 274         }
 275         // font uses old-style figure
 276         if (name == "eco")
 277                 h_font_osf = "true";
 278
 279         else if (name == "amsmath" || name == "amssymb")
 280                 h_use_amsmath = "1";
 281         else if (name == "babel" && !opts.empty()) {
 282                 // check if more than one option was used - used later for inputenc
 283                 // in case inputenc is parsed before babel, set the encoding to auto
 284                 if (options.begin() != options.end() - 1) {
 285                         one_language = false;
 286                         h_inputencoding = "auto";
 287                 }
 288                 // only set the document language when there was not already one set
 289                 // via the documentclass options
 290                 // babel takes the the last language given in the documentclass options
 291                 // as document language. If there is no such language option, the last
 292                 // option of its \usepackage call is used.
 293                 if (documentclass_language == false) {
 294                         handle_opt(options, known_languages, h_language);
 295                         delete_opt(options, known_languages);
 296                         if (is_known(h_language, known_french_languages))
 297                                 h_language = "french";
 298                         else if (is_known(h_language, known_german_languages))
 299                                 h_language = "german";
 300                         else if (is_known(h_language, known_ngerman_languages))
 301                                 h_language = "ngerman";
 302                         else if (is_known(h_language, known_russian_languages))
 303                                 h_language = "russian";
 304                         else if (is_known(h_language, known_ukrainian_languages))
 305                                 h_language = "ukrainian";
 306                         h_quotes_language = h_language;
 307                 }
 308         }
 309         else if (name == "fontenc")
 310                 ; // ignore this
 311         else if (name == "inputenc") {
 312                 // only set when there is not more than one inputenc option
 313                 // therefore check for the "," character
 314                 // also only set when there is not more then one babel language option
 315                 if (opts.find(",") == string::npos && one_language == true)
 316                         h_inputencoding = opts;
 317                 options.clear();
 318         } else if (name == "makeidx")
 319                 ; // ignore this
 320         else if (name == "verbatim")
 321                 ; // ignore this
 322         else if (name == "graphicx")
 323                 ; // ignore this
 324         else if (is_known(name, known_languages)) {
 325                 if (is_known(name, known_french_languages))
 326                         h_language = "french";
 327                 else if (is_known(name, known_german_languages))
 328                         h_language = "german";
 329                 else if (is_known(name, known_ngerman_languages))
 330                         h_language = "ngerman";
 331                 else if (is_known(name, known_russian_languages))
 332                         h_language = "russian";
 333                 else if (is_known(name, known_ukrainian_languages))
 334                         h_language = "ukrainian";
 335                 else
 336                         h_language = name;
 337                 h_quotes_language = h_language;
 338
 339         } else if (name == "natbib") {
 340                 h_cite_engine = "natbib_authoryear";
 341                 vector<string>::iterator it =
 342                         find(options.begin(), options.end(), "authoryear");
 343                 if (it != options.end())
 344                         options.erase(it);
 345                 else {
 346                         it = find(options.begin(), options.end(), "numbers");
 347                         if (it != options.end()) {
 348                                 h_cite_engine = "natbib_numerical";
 349                                 options.erase(it);
 350                         }
 351                 }
 352         } else if (name == "jurabib") {
 353                 h_cite_engine = "jurabib";
 354         } else if (options.empty())
 355                 h_preamble << "\\usepackage{" << name << "}\n";
 356         else {
 357                 h_preamble << "\\usepackage[" << opts << "]{" << name << "}\n";
 358                 options.clear();
 359         }
 360
 361         // We need to do something with the options...
 362         if (!options.empty())
 363                 cerr << "Ignoring options '" << join(options, ",")
 364                      << "' of package " << name << '.' << endl;
 365 }
 366
 367
 368
 369 void end_preamble(ostream & os, TextClass const & /*textclass*/)
 370 {
 371         os << "#LyX file created by tex2lyx " << PACKAGE_VERSION << "\n"
 372            << "\\lyxformat 247\n"
 373            << "\\begin_document\n"
 374            << "\\begin_header\n"
 375            << "\\textclass " << h_textclass << "\n";
 376         if (!h_preamble.str().empty())
 377                 os << "\\begin_preamble\n" << h_preamble.str() << "\n\\end_preamble\n";
 378         if (!h_options.empty())
 379                 os << "\\options " << h_options << "\n";
 380         os << "\\language " << h_language << "\n"
 381            << "\\inputencoding " << h_inputencoding << "\n"
 382            << "\\font_roman " << h_font_roman << "\n"
 383            << "\\font_sans " << h_font_sans << "\n"
 384            << "\\font_typewriter " << h_font_typewriter << "\n"
 385            << "\\font_default_family " << h_font_default_family << "\n"
 386            << "\\font_sc " << h_font_sc << "\n"
 387            << "\\font_osf " << h_font_osf << "\n"
 388            << "\\font_sf_scale " << h_font_sf_scale << "\n"
 389            << "\\font_tt_scale " << h_font_tt_scale << "\n"
 390            << "\\graphics " << h_graphics << "\n"
 391            << "\\paperfontsize " << h_paperfontsize << "\n"
 392            << "\\spacing " << h_spacing << "\n"
 393            << "\\papersize " << h_papersize << "\n"
 394            << "\\use_geometry " << h_use_geometry << "\n"
 395            << "\\use_amsmath " << h_use_amsmath << "\n"
 396            << "\\cite_engine " << h_cite_engine << "\n"
 397            << "\\use_bibtopic " << h_use_bibtopic << "\n"
 398            << "\\paperorientation " << h_paperorientation << "\n"
 399            << "\\secnumdepth " << h_secnumdepth << "\n"
 400            << "\\tocdepth " << h_tocdepth << "\n"
 401            << "\\paragraph_separation " << h_paragraph_separation << "\n"
 402            << "\\defskip " << h_defskip << "\n"
 403            << "\\quotes_language " << h_quotes_language << "\n"
 404            << "\\papercolumns " << h_papercolumns << "\n"
 405            << "\\papersides " << h_papersides << "\n"
 406            << "\\paperpagestyle " << h_paperpagestyle << "\n"
 407            << "\\tracking_changes " << h_tracking_changes << "\n"
 408            << "\\output_changes " << h_output_changes << "\n"
 409            << "\\end_header\n\n"
 410            << "\\begin_body\n";
 411         // clear preamble for subdocuments
 412         h_preamble.str("");
 413 }
 414
 415 } // anonymous namespace
 416
 417 TextClass const parse_preamble(Parser & p, ostream & os, string const & forceclass)
 418 {
 419         // initialize fixed types
 420         special_columns['D'] = 3;
 421         bool is_full_document = false;
 422
 423         // determine whether this is a full document or a fragment for inclusion
 424         while (p.good()) {
 425                 Token const & t = p.get_token();
 426
 427                 if (t.cat() == catEscape && t.cs() == "documentclass") {
 428                         is_full_document = true;
 429                         break;
 430                 }
 431         }
 432         p.reset();
 433
 434         while (is_full_document && p.good()) {
 435                 Token const & t = p.get_token();
 436
 437 #ifdef FILEDEBUG
 438                 cerr << "t: " << t << "\n";
 439 #endif
 440
 441                 //
 442                 // cat codes
 443                 //
 444                 if (t.cat() == catLetter ||
 445                           t.cat() == catSuper ||
 446                           t.cat() == catSub ||
 447                           t.cat() == catOther ||
 448                           t.cat() == catMath ||
 449                           t.cat() == catActive ||
 450                           t.cat() == catBegin ||
 451                           t.cat() == catEnd ||
 452                           t.cat() == catAlign ||
 453                           t.cat() == catParameter)
 454                 h_preamble << t.character();
 455
 456                 else if (t.cat() == catSpace || t.cat() == catNewline)
 457                         h_preamble << t.asInput();
 458
 459                 else if (t.cat() == catComment)
 460                         h_preamble << t.asInput();
 461
 462                 else if (t.cs() == "pagestyle")
 463                         h_paperpagestyle = p.verbatim_item();
 464
 465                 else if (t.cs() == "makeatletter") {
 466                         p.setCatCode('@', catLetter);
 467                 }
 468
 469                 else if (t.cs() == "makeatother") {
 470                         p.setCatCode('@', catOther);
 471                 }
 472
 473                 else if (t.cs() == "newcommand" || t.cs() == "renewcommand"
 474                             || t.cs() == "providecommand") {
 475                         bool star = false;
 476                         if (p.next_token().character() == '*') {
 477                                 p.get_token();
 478                                 star = true;
 479                         }
 480                         string const name = p.verbatim_item();
 481                         string const opt1 = p.getOpt();
 482                         string const opt2 = p.getFullOpt();
 483                         string const body = p.verbatim_item();
 484                         // font settings
 485                         if (name == "\\rmdefault")
 486                                 if (is_known(body, known_roman_fonts))
 487                                         h_font_roman = body;
 488
 489                         if (name == "\\sfdefault")
 490                                 if (is_known(body, known_sans_fonts))
 491                                         h_font_sans = body;
 492
 493                         if (name == "\\ttdefault")
 494                                 if (is_known(body, known_typewriter_fonts))
 495                                         h_font_typewriter = body;
 496
 497                         if (name == "\\familydefault") {
 498                                 string family = body;
 499                                 // remove leading "\"
 500                                 h_font_default_family = family.erase(0,1);
 501                         }
 502                         // only non-lyxspecific stuff
 503                         if (   name != "\\noun"
 504                             && name != "\\tabularnewline"
 505                             && name != "\\LyX"
 506                             && name != "\\lyxline"
 507                             && name != "\\lyxaddress"
 508                             && name != "\\lyxrightaddress"
 509                             && name != "\\lyxdot"
 510                             && name != "\\boldsymbol"
 511                             && name != "\\lyxarrow"
 512                             && name != "\\rmdefault"
 513                             && name != "\\sfdefault"
 514                             && name != "\\ttdefault"
 515                             && name != "\\familydefault") {
 516                                 ostringstream ss;
 517                                 ss << '\\' << t.cs();
 518                                 if (star)
 519                                         ss << '*';
 520                                 ss << '{' << name << '}' << opt1 << opt2
 521                                    << '{' << body << "}";
 522                                 h_preamble << ss.str();
 523
 524                                 // Add the command to the known commands
 525                                 add_known_command(name, opt1, !opt2.empty());
 526 /*
 527                                 ostream & out = in_preamble ? h_preamble : os;
 528                                 out << "\\" << t.cs() << "{" << name << "}"
 529                                     << opts << "{" << body << "}";
 530 */
 531                         }
 532                 }
 533
 534                 else if (t.cs() == "documentclass") {
 535                         vector<string> opts = split_options(p.getArg('[', ']'));
 536                         handle_opt(opts, known_fontsizes, h_paperfontsize);
 537                         delete_opt(opts, known_fontsizes);
 538                         // delete "pt" at the end
 539                         string::size_type i = h_paperfontsize.find("pt");
 540                         if (i != string::npos)
 541                                 h_paperfontsize.erase(i);
 542                         // to avoid that the babel options overwrite the documentclass options
 543                         documentclass_language = false;
 544                         handle_opt(opts, known_languages, h_language);
 545                         delete_opt(opts, known_languages);
 546                         if (is_known(h_language, known_french_languages))
 547                                 h_language = "french";
 548                         else if (is_known(h_language, known_german_languages))
 549                                 h_language = "german";
 550                         else if (is_known(h_language, known_ngerman_languages))
 551                                 h_language = "ngerman";
 552                         else if (is_known(h_language, known_russian_languages))
 553                                 h_language = "russian";
 554                         else if (is_known(h_language, known_ukrainian_languages))
 555                                 h_language = "ukrainian";
 556                         h_quotes_language = h_language;
 557                         h_options = join(opts, ",");
 558                         h_textclass = p.getArg('{', '}');
 559                 }
 560
 561                 else if (t.cs() == "usepackage") {
 562                         string const options = p.getArg('[', ']');
 563                         string const name = p.getArg('{', '}');
 564                         if (options.empty() && name.find(',')) {
 565                                 vector<string> vecnames;
 566                                 split(name, vecnames, ',');
 567                                 vector<string>::const_iterator it  = vecnames.begin();
 568                                 vector<string>::const_iterator end = vecnames.end();
 569                                 for (; it != end; ++it)
 570                                         handle_package(trim(*it), string());
 571                         } else {
 572                                 handle_package(name, options);
 573                         }
 574                 }
 575
 576                 else if (t.cs() == "newenvironment") {
 577                         string const name = p.getArg('{', '}');
 578                         ostringstream ss;
 579                         ss << "\\newenvironment{" << name << "}";
 580                         ss << p.getOpt();
 581                         ss << p.getOpt();
 582                         ss << '{' << p.verbatim_item() << '}';
 583                         ss << '{' << p.verbatim_item() << '}';
 584                         if (name != "lyxcode" && name != "lyxlist" &&
 585                             name != "lyxrightadress" &&
 586                             name != "lyxaddress" && name != "lyxgreyedout")
 587                                 h_preamble << ss.str();
 588                 }
 589
 590                 else if (t.cs() == "def") {
 591                         string name = p.get_token().cs();
 592                         while (p.next_token().cat() != catBegin)
 593                                 name += p.get_token().asString();
 594                         h_preamble << "\\def\\" << name << '{'
 595                                    << p.verbatim_item() << "}";
 596                 }
 597
 598                 else if (t.cs() == "newcolumntype") {
 599                         string const name = p.getArg('{', '}');
 600                         trim(name);
 601                         int nargs = 0;
 602                         string opts = p.getOpt();
 603                         if (!opts.empty()) {
 604                                 istringstream is(string(opts, 1));
 605                                 is >> nargs;
 606                         }
 607                         special_columns[name[0]] = nargs;
 608                         h_preamble << "\\newcolumntype{" << name << "}";
 609                         if (nargs)
 610                                 h_preamble << "[" << nargs << "]";
 611                         h_preamble << "{" << p.verbatim_item() << "}";
 612                 }
 613
 614                 else if (t.cs() == "setcounter") {
 615                         string const name = p.getArg('{', '}');
 616                         string const content = p.getArg('{', '}');
 617                         if (name == "secnumdepth")
 618                                 h_secnumdepth = content;
 619                         else if (name == "tocdepth")
 620                                 h_tocdepth = content;
 621                         else
 622                                 h_preamble << "\\setcounter{" << name << "}{" << content << "}";
 623                 }
 624
 625                 else if (t.cs() == "setlength") {
 626                         string const name = p.verbatim_item();
 627                         string const content = p.verbatim_item();
 628                         // Is this correct?
 629                         if (name == "parskip")
 630                                 h_paragraph_separation = "skip";
 631                         else if (name == "parindent")
 632                                 h_paragraph_separation = "skip";
 633                         else
 634                                 h_preamble << "\\setlength{" << name << "}{" << content << "}";
 635                 }
 636
 637                 else if (t.cs() == "begin") {
 638                         string const name = p.getArg('{', '}');
 639                         if (name == "document")
 640                                 break;
 641                         h_preamble << "\\begin{" << name << "}";
 642                 }
 643
 644                 else if (t.cs() == "jurabibsetup") {
 645                         vector<string> jurabibsetup =
 646                                 split_options(p.getArg('{', '}'));
 647                         // add jurabibsetup to the jurabib package options
 648                         add_package("jurabib", jurabibsetup);
 649                         if (!jurabibsetup.empty()) {
 650                                 h_preamble << "\\jurabibsetup{"
 651                                            << join(jurabibsetup, ",") << '}';
 652                         }
 653                 }
 654
 655                 else if (!t.cs().empty())
 656                         h_preamble << '\\' << t.cs();
 657         }
 658         p.skip_spaces();
 659
 660         // Force textclass if the user wanted it
 661         if (!forceclass.empty())
 662                 h_textclass = forceclass;
 663         if (noweb_mode && !lyx::support::prefixIs(h_textclass, "literate-"))
 664                 h_textclass.insert(0, "literate-");
 665         FileName layoutfilename = libFileSearch("layouts", h_textclass, "layout");
 666         if (layoutfilename.empty()) {
 667                 cerr << "Error: Could not find layout file for textclass \"" << h_textclass << "\"." << endl;
 668                 exit(1);
 669         }
 670         TextClass textclass;
 671         textclass.read(layoutfilename);
 672         if (h_papersides.empty()) {
 673                 ostringstream ss;
 674                 ss << textclass.sides();
 675                 h_papersides = ss.str();
 676         }
 677         end_preamble(os, textclass);
 678         return textclass;
 679 }
 680
 681 // }])
 682
 683
 684 } // namespace lyx