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 "LayoutFile.h"
  19 #include "Layout.h"
  20 #include "Lexer.h"
  21 #include "TextClass.h"
  22
  23 #include "support/convert.h"
  24 #include "support/FileName.h"
  25 #include "support/filetools.h"
  26 #include "support/lstrings.h"
  27
  28 #include <algorithm>
  29 #include <iostream>
  30 #include <sstream>
  31 #include <string>
  32 #include <vector>
  33 #include <map>
  34
  35 using namespace std;
  36 using namespace lyx::support;
  37
  38 namespace lyx {
  39
  40 // special columntypes
  41 extern map<char, int> special_columns;
  42
  43 map<string, vector<string> > used_packages;
  44
  45 // needed to handle encodings with babel
  46 bool one_language = true;
  47
  48 // to avoid that the babel options overwrite the documentclass options
  49 bool documentclass_language;
  50
  51 namespace {
  52
  53 const char * const known_languages[] = { "afrikaans", "american", "arabic",
  54 "austrian", "bahasa", "basque", "belarusian", "brazil", "breton", "british",
  55 "bulgarian", "canadian", "canadien", "catalan", "croatian", "czech", "danish",
  56 "dutch", "english", "esperanto", "estonian", "finnish", "francais", "french",
  57 "frenchb", "frenchle", "frenchpro", "galician", "german", "germanb", "greek",
  58 "hebrew", "icelandic", "irish", "italian", "lsorbian", "magyar", "naustrian",
  59 "ngerman", "ngermanb", "norsk", "nynorsk", "polish", "portuges", "romanian",
  60 "russian", "russianb", "scottish", "serbian", "slovak", "slovene", "spanish",
  61 "swedish", "thai", "turkish", "ukraineb", "ukrainian", "usorbian", "welsh", 0};
  62
  63 //note this when updating to lyxformat 305:
  64 //bahasai, indonesian, and indon = equal to bahasa
  65 //malay, and meyalu = equal to bahasam
  66
  67 const char * const known_french_languages[] = {"french", "frenchb", "francais",
  68                                                 "frenchle", "frenchpro", 0};
  69 const char * const known_german_languages[] = {"german", "germanb", 0};
  70 const char * const known_ngerman_languages[] = {"ngerman", "ngermanb", 0};
  71 const char * const known_russian_languages[] = {"russian", "russianb", 0};
  72 const char * const known_ukrainian_languages[] = {"ukrainian", "ukraineb", 0};
  73
  74 char const * const known_fontsizes[] = { "10pt", "11pt", "12pt", 0 };
  75
  76 const char * const known_roman_fonts[] = { "ae", "bookman", "charter",
  77 "cmr", "fourier", "lmodern", "mathpazo", "mathptmx", "newcent", 0};
  78
  79 const char * const known_sans_fonts[] = { "avant", "berasans", "cmbr", "cmss",
  80 "helvet", "lmss", 0};
  81
  82 const char * const known_typewriter_fonts[] = { "beramono", "cmtl", "cmtt",
  83 "courier", "lmtt", "luximono", "fourier", "lmodern", "mathpazo", "mathptmx",
  84 "newcent", 0};
  85
  86 // some ugly stuff
  87 ostringstream h_preamble;
  88 string h_textclass               = "article";
  89 string h_options                 = string();
  90 string h_language                = "english";
  91 string h_inputencoding           = "auto";
  92 string h_font_roman              = "default";
  93 string h_font_sans               = "default";
  94 string h_font_typewriter         = "default";
  95 string h_font_default_family     = "default";
  96 string h_font_sc                 = "false";
  97 string h_font_osf                = "false";
  98 string h_font_sf_scale           = "100";
  99 string h_font_tt_scale           = "100";
 100 string h_graphics                = "default";
 101 string h_paperfontsize           = "default";
 102 string h_spacing                 = "single";
 103 string h_papersize               = "default";
 104 string h_use_geometry            = "false";
 105 string h_use_amsmath             = "0";
 106 string h_cite_engine             = "basic";
 107 string h_use_bibtopic            = "false";
 108 string h_paperorientation        = "portrait";
 109 string h_secnumdepth             = "3";
 110 string h_tocdepth                = "3";
 111 string h_paragraph_separation    = "indent";
 112 string h_defskip                 = "medskip";
 113 string h_quotes_language         = "english";
 114 string h_papercolumns            = "1";
 115 string h_papersides              = string();
 116 string h_paperpagestyle          = "default";
 117 string h_tracking_changes        = "false";
 118 string h_output_changes          = "false";
 119
 120
 121 void handle_opt(vector<string> & opts, char const * const * what, string & target)
 122 {
 123         if (opts.empty())
 124                 return;
 125
 126         // the last language option is the document language (for babel and LyX)
 127         // the last size option is the document font size
 128         vector<string>::iterator it;
 129         vector<string>::iterator position = opts.begin();
 130         for (; *what; ++what) {
 131                 it = find(opts.begin(), opts.end(), *what);
 132                 if (it != opts.end()) {
 133                         documentclass_language = true;
 134                         if (it >= position) {
 135                                 target = *what;
 136                                 position = it;
 137                         }
 138                 }
 139         }
 140 }
 141
 142
 143 void delete_opt(vector<string> & opts, char const * const * what)
 144 {
 145         if (opts.empty())
 146                 return;
 147
 148         // remove found options from the list
 149         // do this after handle_opt to avoid potential memory leaks and to be able
 150         // to find in every case the last language option
 151         vector<string>::iterator it;
 152         for (; *what; ++what) {
 153                 it = find(opts.begin(), opts.end(), *what);
 154                 if (it != opts.end())
 155                         opts.erase(it);
 156         }
 157 }
 158
 159
 160 /*!
 161  * Split a package options string (keyval format) into a vector.
 162  * Example input:
 163  *   authorformat=smallcaps,
 164  *   commabeforerest,
 165  *   titleformat=colonsep,
 166  *   bibformat={tabular,ibidem,numbered}
 167  */
 168 vector<string> split_options(string const & input)
 169 {
 170         vector<string> options;
 171         string option;
 172         Parser p(input);
 173         while (p.good()) {
 174                 Token const & t = p.get_token();
 175                 if (t.asInput() == ",") {
 176                         options.push_back(trim(option));
 177                         option.erase();
 178                 } else if (t.asInput() == "=") {
 179                         option += '=';
 180                         p.skip_spaces(true);
 181                         if (p.next_token().asInput() == "{")
 182                                 option += '{' + p.getArg('{', '}') + '}';
 183                 } else if (t.cat() != catSpace)
 184                         option += t.asInput();
 185         }
 186
 187         if (!option.empty())
 188                 options.push_back(trim(option));
 189
 190         return options;
 191 }
 192
 193
 194 /*!
 195  * Add package \p name with options \p options to used_packages.
 196  * Remove options from \p options that we don't want to output.
 197  */
 198 void add_package(string const & name, vector<string> & options)
 199 {
 200         // every package inherits the global options
 201         if (used_packages.find(name) == used_packages.end())
 202                 used_packages[name] = split_options(h_options);
 203
 204         vector<string> & v = used_packages[name];
 205         v.insert(v.end(), options.begin(), options.end());
 206         if (name == "jurabib") {
 207                 // Don't output the order argument (see the cite command
 208                 // handling code in text.cpp).
 209                 vector<string>::iterator end =
 210                         remove(options.begin(), options.end(), "natbiborder");
 211                 end = remove(options.begin(), end, "jurabiborder");
 212                 options.erase(end, options.end());
 213         }
 214 }
 215
 216
 217 // Given is a string like "scaled=0.9", return 0.9 * 100
 218 string const scale_as_percentage(string const & scale)
 219 {
 220         string::size_type pos = scale.find('=');
 221         if (pos != string::npos) {
 222                 string value = scale.substr(pos + 1);
 223                 if (isStrDbl(value))
 224                         return convert<string>(100 * convert<double>(value));
 225         }
 226         // If the input string didn't match our expectations.
 227         // return the default value "100"
 228         return "100";
 229 }
 230
 231
 232 void handle_package(string const & name, string const & opts)
 233 {
 234         vector<string> options = split_options(opts);
 235         add_package(name, options);
 236         string scale;
 237
 238         // roman fonts
 239         if (is_known(name, known_roman_fonts))
 240                 h_font_roman = name;
 241
 242         if (name == "fourier") {
 243                 h_font_roman = "utopia";
 244                 // when font uses real small capitals
 245                 if (opts == "expert")
 246                         h_font_sc = "true";
 247         }
 248         if (name == "mathpazo")
 249                 h_font_roman = "palatino";
 250
 251         if (name == "mathptmx")
 252                 h_font_roman = "times";
 253
 254         // sansserif fonts
 255         if (is_known(name, known_sans_fonts)) {
 256                 h_font_sans = name;
 257                 if (!opts.empty()) {
 258                         scale = opts;
 259                         h_font_sf_scale = scale_as_percentage(scale);
 260                 }
 261         }
 262         // typewriter fonts
 263         if (is_known(name, known_typewriter_fonts)) {
 264                 h_font_typewriter = name;
 265                 if (!opts.empty()) {
 266                         scale = opts;
 267                         h_font_tt_scale = scale_as_percentage(scale);
 268                 }
 269         }
 270         // font uses old-style figure
 271         if (name == "eco")
 272                 h_font_osf = "true";
 273
 274         else if (name == "amsmath" || name == "amssymb")
 275                 h_use_amsmath = "1";
 276
 277         else if (name == "babel" && !opts.empty()) {
 278                 // check if more than one option was used - used later for inputenc
 279                 // in case inputenc is parsed before babel, set the encoding to auto
 280                 if (options.begin() != options.end() - 1) {
 281                         one_language = false;
 282                         h_inputencoding = "auto";
 283                 }
 284                 // only set the document language when there was not already one set
 285                 // via the documentclass options
 286                 // babel takes the the last language given in the documentclass options
 287                 // as document language. If there is no such language option, the last
 288                 // option of its \usepackage call is used.
 289                 if (documentclass_language == false) {
 290                         handle_opt(options, known_languages, h_language);
 291                         delete_opt(options, known_languages);
 292                         if (is_known(h_language, known_french_languages))
 293                                 h_language = "french";
 294                         else if (is_known(h_language, known_german_languages))
 295                                 h_language = "german";
 296                         else if (is_known(h_language, known_ngerman_languages))
 297                                 h_language = "ngerman";
 298                         else if (is_known(h_language, known_russian_languages))
 299                                 h_language = "russian";
 300                         else if (is_known(h_language, known_ukrainian_languages))
 301                                 h_language = "ukrainian";
 302                         h_quotes_language = h_language;
 303                 }
 304         }
 305         else if (name == "fontenc")
 306                 ; // ignore this
 307
 308         else if (name == "inputenc") {
 309                 // only set when there is not more than one inputenc option
 310                 // therefore check for the "," character
 311                 // also only set when there is not more then one babel language option
 312                 if (opts.find(",") == string::npos && one_language == true)
 313                         if (opts == "ascii")
 314                                 //change ascii to auto to be in the unicode range, see
 315                                 //http://bugzilla.lyx.org/show_bug.cgi?id=4719
 316                                 h_inputencoding = "auto";
 317                         else
 318                                 h_inputencoding = opts;
 319                 options.clear();
 320         }
 321         else if (name == "makeidx")
 322                 ; // ignore this
 323
 324         else if (name == "verbatim")
 325                 ; // ignore this
 326
 327         else if (name == "color")
 328                 // with the following command this package is only loaded when needed for
 329                 // undefined colors, since we only support the predefined colors
 330                 h_preamble << "\\@ifundefined{definecolor}\n {\\usepackage{color}}{}\n";
 331
 332         else if (name == "graphicx")
 333                 ; // ignore this
 334
 335         else if (name == "setspace")
 336                 ; // ignore this
 337
 338         else if (is_known(name, known_languages)) {
 339                 if (is_known(name, known_french_languages))
 340                         h_language = "french";
 341                 else if (is_known(name, known_german_languages))
 342                         h_language = "german";
 343                 else if (is_known(name, known_ngerman_languages))
 344                         h_language = "ngerman";
 345                 else if (is_known(name, known_russian_languages))
 346                         h_language = "russian";
 347                 else if (is_known(name, known_ukrainian_languages))
 348                         h_language = "ukrainian";
 349                 else
 350                         h_language = name;
 351                 h_quotes_language = h_language;
 352         }
 353         else if (name == "natbib") {
 354                 h_cite_engine = "natbib_authoryear";
 355                 vector<string>::iterator it =
 356                         find(options.begin(), options.end(), "authoryear");
 357                 if (it != options.end())
 358                         options.erase(it);
 359                 else {
 360                         it = find(options.begin(), options.end(), "numbers");
 361                         if (it != options.end()) {
 362                                 h_cite_engine = "natbib_numerical";
 363                                 options.erase(it);
 364                         }
 365                 }
 366         }
 367         else if (name == "jurabib")
 368                 h_cite_engine = "jurabib";
 369
 370         else if (options.empty())
 371                 h_preamble << "\\usepackage{" << name << "}\n";
 372         else {
 373                 h_preamble << "\\usepackage[" << opts << "]{" << name << "}\n";
 374                 options.clear();
 375         }
 376         // We need to do something with the options...
 377         if (!options.empty())
 378                 cerr << "Ignoring options '" << join(options, ",")
 379                      << "' of package " << name << '.' << endl;
 380 }
 381
 382
 383
 384 void end_preamble(ostream & os, TextClass const & /*textclass*/)
 385 {
 386         os << "#LyX file created by tex2lyx " << PACKAGE_VERSION << "\n"
 387            << "\\lyxformat 247\n"
 388            << "\\begin_document\n"
 389            << "\\begin_header\n"
 390            << "\\textclass " << h_textclass << "\n";
 391         if (!h_preamble.str().empty())
 392                 os << "\\begin_preamble\n" << h_preamble.str() << "\n\\end_preamble\n";
 393         if (!h_options.empty())
 394                 os << "\\options " << h_options << "\n";
 395         os << "\\language " << h_language << "\n"
 396            << "\\inputencoding " << h_inputencoding << "\n"
 397            << "\\font_roman " << h_font_roman << "\n"
 398            << "\\font_sans " << h_font_sans << "\n"
 399            << "\\font_typewriter " << h_font_typewriter << "\n"
 400            << "\\font_default_family " << h_font_default_family << "\n"
 401            << "\\font_sc " << h_font_sc << "\n"
 402            << "\\font_osf " << h_font_osf << "\n"
 403            << "\\font_sf_scale " << h_font_sf_scale << "\n"
 404            << "\\font_tt_scale " << h_font_tt_scale << "\n"
 405            << "\\graphics " << h_graphics << "\n"
 406            << "\\paperfontsize " << h_paperfontsize << "\n"
 407            << "\\spacing " << h_spacing << "\n"
 408            << "\\papersize " << h_papersize << "\n"
 409            << "\\use_geometry " << h_use_geometry << "\n"
 410            << "\\use_amsmath " << h_use_amsmath << "\n"
 411            << "\\cite_engine " << h_cite_engine << "\n"
 412            << "\\use_bibtopic " << h_use_bibtopic << "\n"
 413            << "\\paperorientation " << h_paperorientation << "\n"
 414            << "\\secnumdepth " << h_secnumdepth << "\n"
 415            << "\\tocdepth " << h_tocdepth << "\n"
 416            << "\\paragraph_separation " << h_paragraph_separation << "\n"
 417            << "\\defskip " << h_defskip << "\n"
 418            << "\\quotes_language " << h_quotes_language << "\n"
 419            << "\\papercolumns " << h_papercolumns << "\n"
 420            << "\\papersides " << h_papersides << "\n"
 421            << "\\paperpagestyle " << h_paperpagestyle << "\n"
 422            << "\\tracking_changes " << h_tracking_changes << "\n"
 423            << "\\output_changes " << h_output_changes << "\n"
 424            << "\\end_header\n\n"
 425            << "\\begin_body\n";
 426         // clear preamble for subdocuments
 427         h_preamble.str("");
 428 }
 429
 430 } // anonymous namespace
 431
 432 void parse_preamble(Parser & p, ostream & os,
 433         string const & forceclass, TeX2LyXDocClass & tc)
 434 {
 435         // initialize fixed types
 436         special_columns['D'] = 3;
 437         bool is_full_document = false;
 438
 439         // determine whether this is a full document or a fragment for inclusion
 440         while (p.good()) {
 441                 Token const & t = p.get_token();
 442
 443                 if (t.cat() == catEscape && t.cs() == "documentclass") {
 444                         is_full_document = true;
 445                         break;
 446                 }
 447         }
 448         p.reset();
 449
 450         while (is_full_document && p.good()) {
 451                 Token const & t = p.get_token();
 452
 453 #ifdef FILEDEBUG
 454                 cerr << "t: " << t << "\n";
 455 #endif
 456
 457                 //
 458                 // cat codes
 459                 //
 460                 if (t.cat() == catLetter ||
 461                           t.cat() == catSuper ||
 462                           t.cat() == catSub ||
 463                           t.cat() == catOther ||
 464                           t.cat() == catMath ||
 465                           t.cat() == catActive ||
 466                           t.cat() == catBegin ||
 467                           t.cat() == catEnd ||
 468                           t.cat() == catAlign ||
 469                           t.cat() == catParameter)
 470                 h_preamble << t.character();
 471
 472                 else if (t.cat() == catSpace || t.cat() == catNewline)
 473                         h_preamble << t.asInput();
 474
 475                 else if (t.cat() == catComment)
 476                         h_preamble << t.asInput();
 477
 478                 else if (t.cs() == "pagestyle")
 479                         h_paperpagestyle = p.verbatim_item();
 480
 481                 else if (t.cs() == "makeatletter") {
 482                         p.setCatCode('@', catLetter);
 483                 }
 484
 485                 else if (t.cs() == "makeatother") {
 486                         p.setCatCode('@', catOther);
 487                 }
 488
 489                 else if (t.cs() == "newcommand"
 490                          || t.cs() == "renewcommand"
 491                          || t.cs() == "providecommand"
 492                          || t.cs() == "newlyxcommand") {
 493                         bool star = false;
 494                         if (p.next_token().character() == '*') {
 495                                 p.get_token();
 496                                 star = true;
 497                         }
 498                         string const name = p.verbatim_item();
 499                         string const opt1 = p.getOpt();
 500                         string const opt2 = p.getFullOpt();
 501                         string const body = p.verbatim_item();
 502                         // font settings
 503                         if (name == "\\rmdefault")
 504                                 if (is_known(body, known_roman_fonts))
 505                                         h_font_roman = body;
 506
 507                         if (name == "\\sfdefault")
 508                                 if (is_known(body, known_sans_fonts))
 509                                         h_font_sans = body;
 510
 511                         if (name == "\\ttdefault")
 512                                 if (is_known(body, known_typewriter_fonts))
 513                                         h_font_typewriter = body;
 514
 515                         if (name == "\\familydefault") {
 516                                 string family = body;
 517                                 // remove leading "\"
 518                                 h_font_default_family = family.erase(0,1);
 519                         }
 520                         // only non-lyxspecific stuff
 521                         if (   name != "\\noun"
 522                             && name != "\\tabularnewline"
 523                             && name != "\\LyX"
 524                             && name != "\\lyxline"
 525                             && name != "\\lyxaddress"
 526                             && name != "\\lyxrightaddress"
 527                             && name != "\\lyxdot"
 528                             && name != "\\boldsymbol"
 529                             && name != "\\lyxarrow"
 530                             && name != "\\rmdefault"
 531                             && name != "\\sfdefault"
 532                             && name != "\\ttdefault"
 533                             && name != "\\familydefault") {
 534                                 ostringstream ss;
 535                                 ss << '\\' << t.cs();
 536                                 if (star)
 537                                         ss << '*';
 538                                 ss << '{' << name << '}' << opt1 << opt2
 539                                    << '{' << body << "}";
 540                                 h_preamble << ss.str();
 541
 542                                 // Add the command to the known commands
 543                                 add_known_command(name, opt1, !opt2.empty());
 544 /*
 545                                 ostream & out = in_preamble ? h_preamble : os;
 546                                 out << "\\" << t.cs() << "{" << name << "}"
 547                                     << opts << "{" << body << "}";
 548 */
 549                         }
 550                 }
 551
 552                 else if (t.cs() == "documentclass") {
 553                         vector<string> opts = split_options(p.getArg('[', ']'));
 554                         handle_opt(opts, known_fontsizes, h_paperfontsize);
 555                         delete_opt(opts, known_fontsizes);
 556                         // delete "pt" at the end
 557                         string::size_type i = h_paperfontsize.find("pt");
 558                         if (i != string::npos)
 559                                 h_paperfontsize.erase(i);
 560                         // to avoid that the babel options overwrite the documentclass options
 561                         documentclass_language = false;
 562                         handle_opt(opts, known_languages, h_language);
 563                         delete_opt(opts, known_languages);
 564                         if (is_known(h_language, known_french_languages))
 565                                 h_language = "french";
 566                         else if (is_known(h_language, known_german_languages))
 567                                 h_language = "german";
 568                         else if (is_known(h_language, known_ngerman_languages))
 569                                 h_language = "ngerman";
 570                         else if (is_known(h_language, known_russian_languages))
 571                                 h_language = "russian";
 572                         else if (is_known(h_language, known_ukrainian_languages))
 573                                 h_language = "ukrainian";
 574                         h_quotes_language = h_language;
 575                         h_options = join(opts, ",");
 576                         h_textclass = p.getArg('{', '}');
 577                 }
 578
 579                 else if (t.cs() == "usepackage") {
 580                         string const options = p.getArg('[', ']');
 581                         string const name = p.getArg('{', '}');
 582                         if (options.empty() && name.find(',')) {
 583                                 vector<string> vecnames;
 584                                 split(name, vecnames, ',');
 585                                 vector<string>::const_iterator it  = vecnames.begin();
 586                                 vector<string>::const_iterator end = vecnames.end();
 587                                 for (; it != end; ++it)
 588                                         handle_package(trim(*it), string());
 589                         } else {
 590                                 handle_package(name, options);
 591                         }
 592                 }
 593
 594                 else if (t.cs() == "newenvironment") {
 595                         string const name = p.getArg('{', '}');
 596                         ostringstream ss;
 597                         ss << "\\newenvironment{" << name << "}";
 598                         ss << p.getOpt();
 599                         ss << p.getOpt();
 600                         ss << '{' << p.verbatim_item() << '}';
 601                         ss << '{' << p.verbatim_item() << '}';
 602                         if (name != "lyxcode" && name != "lyxlist" &&
 603                             name != "lyxrightadress" &&
 604                             name != "lyxaddress" && name != "lyxgreyedout")
 605                                 h_preamble << ss.str();
 606                 }
 607
 608                 else if (t.cs() == "def") {
 609                         string name = p.get_token().cs();
 610                         while (p.next_token().cat() != catBegin)
 611                                 name += p.get_token().asString();
 612                         h_preamble << "\\def\\" << name << '{'
 613                                    << p.verbatim_item() << "}";
 614                 }
 615
 616                 else if (t.cs() == "newcolumntype") {
 617                         string const name = p.getArg('{', '}');
 618                         trim(name);
 619                         int nargs = 0;
 620                         string opts = p.getOpt();
 621                         if (!opts.empty()) {
 622                                 istringstream is(string(opts, 1));
 623                                 is >> nargs;
 624                         }
 625                         special_columns[name[0]] = nargs;
 626                         h_preamble << "\\newcolumntype{" << name << "}";
 627                         if (nargs)
 628                                 h_preamble << "[" << nargs << "]";
 629                         h_preamble << "{" << p.verbatim_item() << "}";
 630                 }
 631
 632                 else if (t.cs() == "setcounter") {
 633                         string const name = p.getArg('{', '}');
 634                         string const content = p.getArg('{', '}');
 635                         if (name == "secnumdepth")
 636                                 h_secnumdepth = content;
 637                         else if (name == "tocdepth")
 638                                 h_tocdepth = content;
 639                         else
 640                                 h_preamble << "\\setcounter{" << name << "}{" << content << "}";
 641                 }
 642
 643                 else if (t.cs() == "setlength") {
 644                         string const name = p.verbatim_item();
 645                         string const content = p.verbatim_item();
 646                         // the paragraphs are only not indented when \parindent is set to zero
 647                         if (name == "\\parindent" && content != "") {
 648                                 if (content[0] == '0')
 649                                         h_paragraph_separation = "skip";
 650                         } else if (name == "\\parskip") {
 651                                 if (content == "\\smallskipamount")
 652                                         h_defskip = "smallskip";
 653                                 else if (content == "\\medskipamount")
 654                                         h_defskip = "medskip";
 655                                 else if (content == "\\bigskipamount")
 656                                         h_defskip = "bigskip";
 657                                 else
 658                                         h_defskip = content;
 659                         } else
 660                                 h_preamble << "\\setlength{" << name << "}{" << content << "}";
 661                 }
 662
 663                 else if (t.cs() =="onehalfspacing")
 664                         h_spacing = "onehalf";
 665
 666                 else if (t.cs() =="doublespacing")
 667                         h_spacing = "double";
 668
 669                 else if (t.cs() =="setstretch")
 670                         h_spacing = "other " + p.verbatim_item();
 671
 672                 else if (t.cs() == "begin") {
 673                         string const name = p.getArg('{', '}');
 674                         if (name == "document")
 675                                 break;
 676                         h_preamble << "\\begin{" << name << "}";
 677                 }
 678
 679                 else if (t.cs() == "jurabibsetup") {
 680                         vector<string> jurabibsetup =
 681                                 split_options(p.getArg('{', '}'));
 682                         // add jurabibsetup to the jurabib package options
 683                         add_package("jurabib", jurabibsetup);
 684                         if (!jurabibsetup.empty()) {
 685                                 h_preamble << "\\jurabibsetup{"
 686                                            << join(jurabibsetup, ",") << '}';
 687                         }
 688                 }
 689
 690                 else if (!t.cs().empty())
 691                         h_preamble << '\\' << t.cs();
 692         }
 693         p.skip_spaces();
 694
 695         // Force textclass if the user wanted it
 696         if (!forceclass.empty())
 697                 h_textclass = forceclass;
 698         if (noweb_mode && !prefixIs(h_textclass, "literate-"))
 699                 h_textclass.insert(0, "literate-");
 700         FileName layoutfilename = libFileSearch("layouts", h_textclass, "layout");
 701         if (layoutfilename.empty()) {
 702                 cerr << "Error: Could not find layout file for textclass \"" << h_textclass << "\"." << endl;
 703                 exit(1);
 704         }
 705         tc.read(layoutfilename);
 706         if (h_papersides.empty()) {
 707                 ostringstream ss;
 708                 ss << tc.sides();
 709                 h_papersides = ss.str();
 710         }
 711         end_preamble(os, tc);
 712 }
 713
 714 // }])
 715
 716
 717 } // namespace lyx