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 <boost/regex.hpp>
  29
  30 #include <algorithm>
  31 #include <iostream>
  32 #include <sstream>
  33 #include <string>
  34 #include <vector>
  35 #include <map>
  36
  37 using namespace std;
  38 using namespace lyx::support;
  39 using boost::regex;
  40 using boost::smatch;
  41
  42 namespace lyx {
  43
  44 // special columntypes
  45 extern map<char, int> special_columns;
  46
  47 map<string, vector<string> > used_packages;
  48
  49 // needed to handle encodings with babel
  50 bool one_language = true;
  51
  52 // to avoid that the babel options overwrite the documentclass options
  53 bool documentclass_language;
  54
  55 namespace {
  56
  57 const char * const known_languages[] = { "afrikaans", "american", "arabic",
  58 "austrian", "bahasa", "basque", "belarusian", "brazil", "breton", "british",
  59 "bulgarian", "canadian", "canadien", "catalan", "croatian", "czech", "danish",
  60 "dutch", "english", "esperanto", "estonian", "finnish", "francais", "french",
  61 "frenchb", "frenchle", "frenchpro", "galician", "german", "germanb", "greek",
  62 "hebrew", "icelandic", "irish", "italian", "lsorbian", "magyar", "naustrian",
  63 "ngerman", "ngermanb", "norsk", "nynorsk", "polish", "portuges", "romanian",
  64 "russian", "russianb", "scottish", "serbian", "slovak", "slovene", "spanish",
  65 "swedish", "thai", "turkish", "ukraineb", "ukrainian", "usorbian", "welsh", 0};
  66
  67 //note this when updating to lyxformat 305:
  68 //bahasai, indonesian, and indon = equal to bahasa
  69 //malay, and meyalu = equal to bahasam
  70
  71 const char * const known_french_languages[] = {"french", "frenchb", "francais",
  72                                                 "frenchle", "frenchpro", 0};
  73 const char * const known_german_languages[] = {"german", "germanb", 0};
  74 const char * const known_ngerman_languages[] = {"ngerman", "ngermanb", 0};
  75 const char * const known_russian_languages[] = {"russian", "russianb", 0};
  76 const char * const known_ukrainian_languages[] = {"ukrainian", "ukraineb", 0};
  77
  78 char const * const known_fontsizes[] = { "10pt", "11pt", "12pt", 0 };
  79
  80 const char * const known_roman_fonts[] = { "ae", "bookman", "charter",
  81 "cmr", "fourier", "lmodern", "mathpazo", "mathptmx", "newcent", 0};
  82
  83 const char * const known_sans_fonts[] = { "avant", "berasans", "cmbr", "cmss",
  84 "helvet", "lmss", 0};
  85
  86 const char * const known_typewriter_fonts[] = { "beramono", "cmtl", "cmtt",
  87 "courier", "lmtt", "luximono", "fourier", "lmodern", "mathpazo", "mathptmx",
  88 "newcent", 0};
  89
  90 const char * const known_paper_sizes[] = { "a3paper", "b3paper", "a4paper",
  91 "b4paper", "a5paper", "b5paper", "executivepaper", "legalpaper",
  92 "letterpaper", 0};
  93
  94 const char * const known_class_paper_sizes[] = { "a4paper", "a5paper",
  95 "executivepaper", "legalpaper", "letterpaper", 0};
  96
  97 const char * const known_paper_margins[] = { "lmargin", "tmargin", "rmargin",
  98 "bmargin", "headheight", "headsep", "footskip", "columnsep", 0};
  99
 100 const char * const known_coded_paper_margins[] = { "leftmargin", "topmargin",
 101 "rightmargin", "bottommargin", "headheight", "headsep", "footskip",
 102 "columnsep", 0};
 103
 104 // default settings
 105 ostringstream h_preamble;
 106 string h_textclass               = "article";
 107 string h_options                 = string();
 108 string h_language                = "english";
 109 string h_inputencoding           = "auto";
 110 string h_font_roman              = "default";
 111 string h_font_sans               = "default";
 112 string h_font_typewriter         = "default";
 113 string h_font_default_family     = "default";
 114 string h_font_sc                 = "false";
 115 string h_font_osf                = "false";
 116 string h_font_sf_scale           = "100";
 117 string h_font_tt_scale           = "100";
 118 string h_graphics                = "default";
 119 string h_paperfontsize           = "default";
 120 string h_spacing                 = "single";
 121 string h_papersize               = "default";
 122 string h_use_geometry            = "false";
 123 string h_use_amsmath             = "0";
 124 string h_cite_engine             = "basic";
 125 string h_use_bibtopic            = "false";
 126 string h_paperorientation        = "portrait";
 127 string h_secnumdepth             = "3";
 128 string h_tocdepth                = "3";
 129 string h_paragraph_separation    = "indent";
 130 string h_defskip                 = "medskip";
 131 string h_quotes_language         = "english";
 132 string h_papercolumns            = "1";
 133 string h_papersides              = string();
 134 string h_paperpagestyle          = "default";
 135 string h_tracking_changes        = "false";
 136 string h_output_changes          = "false";
 137 string h_margins                 = "";
 138
 139
 140 void handle_opt(vector<string> & opts, char const * const * what, string & target)
 141 {
 142         if (opts.empty())
 143                 return;
 144
 145         // the last language option is the document language (for babel and LyX)
 146         // the last size option is the document font size
 147         vector<string>::iterator it;
 148         vector<string>::iterator position = opts.begin();
 149         for (; *what; ++what) {
 150                 it = find(opts.begin(), opts.end(), *what);
 151                 if (it != opts.end()) {
 152                         documentclass_language = true;
 153                         if (it >= position) {
 154                                 target = *what;
 155                                 position = it;
 156                         }
 157                 }
 158         }
 159 }
 160
 161
 162 void delete_opt(vector<string> & opts, char const * const * what)
 163 {
 164         if (opts.empty())
 165                 return;
 166
 167         // remove found options from the list
 168         // do this after handle_opt to avoid potential memory leaks and to be able
 169         // to find in every case the last language option
 170         vector<string>::iterator it;
 171         for (; *what; ++what) {
 172                 it = find(opts.begin(), opts.end(), *what);
 173                 if (it != opts.end())
 174                         opts.erase(it);
 175         }
 176 }
 177
 178
 179 /*!
 180  * Split a package options string (keyval format) into a vector.
 181  * Example input:
 182  *   authorformat=smallcaps,
 183  *   commabeforerest,
 184  *   titleformat=colonsep,
 185  *   bibformat={tabular,ibidem,numbered}
 186  */
 187 vector<string> split_options(string const & input)
 188 {
 189         vector<string> options;
 190         string option;
 191         Parser p(input);
 192         while (p.good()) {
 193                 Token const & t = p.get_token();
 194                 if (t.asInput() == ",") {
 195                         options.push_back(trim(option));
 196                         option.erase();
 197                 } else if (t.asInput() == "=") {
 198                         option += '=';
 199                         p.skip_spaces(true);
 200                         if (p.next_token().asInput() == "{")
 201                                 option += '{' + p.getArg('{', '}') + '}';
 202                 } else if (t.cat() != catSpace)
 203                         option += t.asInput();
 204         }
 205
 206         if (!option.empty())
 207                 options.push_back(trim(option));
 208
 209         return options;
 210 }
 211
 212
 213 /*!
 214  * Add package \p name with options \p options to used_packages.
 215  * Remove options from \p options that we don't want to output.
 216  */
 217 void add_package(string const & name, vector<string> & options)
 218 {
 219         // every package inherits the global options
 220         if (used_packages.find(name) == used_packages.end())
 221                 used_packages[name] = split_options(h_options);
 222
 223         vector<string> & v = used_packages[name];
 224         v.insert(v.end(), options.begin(), options.end());
 225         if (name == "jurabib") {
 226                 // Don't output the order argument (see the cite command
 227                 // handling code in text.cpp).
 228                 vector<string>::iterator end =
 229                         remove(options.begin(), options.end(), "natbiborder");
 230                 end = remove(options.begin(), end, "jurabiborder");
 231                 options.erase(end, options.end());
 232         }
 233 }
 234
 235
 236 // Given is a string like "scaled=0.9", return 0.9 * 100
 237 string const scale_as_percentage(string const & scale)
 238 {
 239         string::size_type pos = scale.find('=');
 240         if (pos != string::npos) {
 241                 string value = scale.substr(pos + 1);
 242                 if (isStrDbl(value))
 243                         return convert<string>(100 * convert<double>(value));
 244         }
 245         // If the input string didn't match our expectations.
 246         // return the default value "100"
 247         return "100";
 248 }
 249
 250
 251 void handle_package(Parser &p, string const & name, string const & opts,
 252                     bool in_lyx_preamble)
 253 {
 254         vector<string> options = split_options(opts);
 255         add_package(name, options);
 256         string scale;
 257
 258         // roman fonts
 259         if (is_known(name, known_roman_fonts))
 260                 h_font_roman = name;
 261
 262         if (name == "fourier") {
 263                 h_font_roman = "utopia";
 264                 // when font uses real small capitals
 265                 if (opts == "expert")
 266                         h_font_sc = "true";
 267         }
 268         if (name == "mathpazo")
 269                 h_font_roman = "palatino";
 270
 271         if (name == "mathptmx")
 272                 h_font_roman = "times";
 273
 274         // sansserif fonts
 275         if (is_known(name, known_sans_fonts)) {
 276                 h_font_sans = name;
 277                 if (!opts.empty()) {
 278                         scale = opts;
 279                         h_font_sf_scale = scale_as_percentage(scale);
 280                 }
 281         }
 282         // typewriter fonts
 283         if (is_known(name, known_typewriter_fonts)) {
 284                 h_font_typewriter = name;
 285                 if (!opts.empty()) {
 286                         scale = opts;
 287                         h_font_tt_scale = scale_as_percentage(scale);
 288                 }
 289         }
 290         // font uses old-style figure
 291         if (name == "eco")
 292                 h_font_osf = "true";
 293
 294         else if (name == "amsmath" || name == "amssymb")
 295                 h_use_amsmath = "1";
 296
 297         else if (name == "babel" && !opts.empty()) {
 298                 // check if more than one option was used - used later for inputenc
 299                 // in case inputenc is parsed before babel, set the encoding to auto
 300                 if (options.begin() != options.end() - 1) {
 301                         one_language = false;
 302                         h_inputencoding = "auto";
 303                 }
 304                 // only set the document language when there was not already one set
 305                 // via the documentclass options
 306                 // babel takes the the last language given in the documentclass options
 307                 // as document language. If there is no such language option, the last
 308                 // option of its \usepackage call is used.
 309                 if (documentclass_language == false) {
 310                         handle_opt(options, known_languages, h_language);
 311                         delete_opt(options, known_languages);
 312                         if (is_known(h_language, known_french_languages))
 313                                 h_language = "french";
 314                         else if (is_known(h_language, known_german_languages))
 315                                 h_language = "german";
 316                         else if (is_known(h_language, known_ngerman_languages))
 317                                 h_language = "ngerman";
 318                         else if (is_known(h_language, known_russian_languages))
 319                                 h_language = "russian";
 320                         else if (is_known(h_language, known_ukrainian_languages))
 321                                 h_language = "ukrainian";
 322                         h_quotes_language = h_language;
 323                 }
 324         }
 325         else if (name == "fontenc")
 326                 ; // ignore this
 327
 328         else if (name == "inputenc") {
 329                 // only set when there is not more than one inputenc
 330                 // option therefore check for the "," character also
 331                 // only set when there is not more then one babel
 332                 // language option
 333                 if (opts.find(",") == string::npos && one_language == true) {
 334                         if (opts == "ascii")
 335                                 //change ascii to auto to be in the unicode range, see
 336                                 //http://bugzilla.lyx.org/show_bug.cgi?id=4719
 337                                 h_inputencoding = "auto";
 338                         else if (!opts.empty())
 339                                 h_inputencoding = opts;
 340                 }
 341                 if (!options.empty())
 342                         p.setEncoding(options.back());
 343                 options.clear();
 344         }
 345
 346         else if (name == "makeidx")
 347                 ; // ignore this
 348
 349         else if (name == "verbatim")
 350                 ; // ignore this
 351
 352         else if (name == "color")
 353                 // with the following command this package is only loaded when needed for
 354                 // undefined colors, since we only support the predefined colors
 355                 h_preamble << "\\@ifundefined{definecolor}\n {\\usepackage{color}}{}\n";
 356
 357         else if (name == "graphicx")
 358                 ; // ignore this
 359
 360         else if (name == "setspace")
 361                 ; // ignore this
 362
 363         else if (name == "geometry")
 364                 ; // Ignore this, the geometry settings are made by the \geometry
 365                   // command. This command is handled below.
 366
 367         else if (is_known(name, known_languages)) {
 368                 if (is_known(name, known_french_languages))
 369                         h_language = "french";
 370                 else if (is_known(name, known_german_languages))
 371                         h_language = "german";
 372                 else if (is_known(name, known_ngerman_languages))
 373                         h_language = "ngerman";
 374                 else if (is_known(name, known_russian_languages))
 375                         h_language = "russian";
 376                 else if (is_known(name, known_ukrainian_languages))
 377                         h_language = "ukrainian";
 378                 else
 379                         h_language = name;
 380                 h_quotes_language = h_language;
 381         }
 382         else if (name == "natbib") {
 383                 h_cite_engine = "natbib_authoryear";
 384                 vector<string>::iterator it =
 385                         find(options.begin(), options.end(), "authoryear");
 386                 if (it != options.end())
 387                         options.erase(it);
 388                 else {
 389                         it = find(options.begin(), options.end(), "numbers");
 390                         if (it != options.end()) {
 391                                 h_cite_engine = "natbib_numerical";
 392                                 options.erase(it);
 393                         }
 394                 }
 395         }
 396         else if (name == "jurabib")
 397                 h_cite_engine = "jurabib";
 398         else if (!in_lyx_preamble) {
 399                 if (options.empty())
 400                         h_preamble << "\\usepackage{" << name << "}\n";
 401                 else {
 402                         h_preamble << "\\usepackage[" << opts << "]{"
 403                                    << name << "}\n";
 404                         options.clear();
 405                 }
 406         }
 407
 408         // We need to do something with the options...
 409         if (!options.empty())
 410                 cerr << "Ignoring options '" << join(options, ",")
 411                      << "' of package " << name << '.' << endl;
 412 }
 413
 414
 415
 416 void end_preamble(ostream & os, TextClass const & /*textclass*/)
 417 {
 418         os << "#LyX file created by tex2lyx " << PACKAGE_VERSION << "\n"
 419            << "\\lyxformat 249\n"
 420            << "\\begin_document\n"
 421            << "\\begin_header\n"
 422            << "\\textclass " << h_textclass << "\n";
 423         if (!h_preamble.str().empty())
 424                 os << "\\begin_preamble\n" << h_preamble.str() << "\n\\end_preamble\n";
 425         if (!h_options.empty())
 426                 os << "\\options " << h_options << "\n";
 427         os << "\\language " << h_language << "\n"
 428            << "\\inputencoding " << h_inputencoding << "\n"
 429            << "\\font_roman " << h_font_roman << "\n"
 430            << "\\font_sans " << h_font_sans << "\n"
 431            << "\\font_typewriter " << h_font_typewriter << "\n"
 432            << "\\font_default_family " << h_font_default_family << "\n"
 433            << "\\font_sc " << h_font_sc << "\n"
 434            << "\\font_osf " << h_font_osf << "\n"
 435            << "\\font_sf_scale " << h_font_sf_scale << "\n"
 436            << "\\font_tt_scale " << h_font_tt_scale << "\n"
 437            << "\\graphics " << h_graphics << "\n"
 438            << "\\paperfontsize " << h_paperfontsize << "\n"
 439            << "\\spacing " << h_spacing << "\n"
 440            << "\\papersize " << h_papersize << "\n"
 441            << "\\use_geometry " << h_use_geometry << "\n"
 442            << "\\use_amsmath " << h_use_amsmath << "\n"
 443            << "\\cite_engine " << h_cite_engine << "\n"
 444            << "\\use_bibtopic " << h_use_bibtopic << "\n"
 445            << "\\paperorientation " << h_paperorientation << "\n"
 446            << h_margins
 447            << "\\secnumdepth " << h_secnumdepth << "\n"
 448            << "\\tocdepth " << h_tocdepth << "\n"
 449            << "\\paragraph_separation " << h_paragraph_separation << "\n"
 450            << "\\defskip " << h_defskip << "\n"
 451            << "\\quotes_language " << h_quotes_language << "\n"
 452            << "\\papercolumns " << h_papercolumns << "\n"
 453            << "\\papersides " << h_papersides << "\n"
 454            << "\\paperpagestyle " << h_paperpagestyle << "\n"
 455            << "\\tracking_changes " << h_tracking_changes << "\n"
 456            << "\\output_changes " << h_output_changes << "\n"
 457            << "\\end_header\n\n"
 458            << "\\begin_body\n";
 459         // clear preamble for subdocuments
 460         h_preamble.str("");
 461 }
 462
 463 } // anonymous namespace
 464
 465 void parse_preamble(Parser & p, ostream & os,
 466         string const & forceclass, TeX2LyXDocClass & tc)
 467 {
 468         // initialize fixed types
 469         special_columns['D'] = 3;
 470         bool is_full_document = false;
 471         bool is_lyx_file = false;
 472         bool in_lyx_preamble = true;
 473
 474         // determine whether this is a full document or a fragment for inclusion
 475         while (p.good()) {
 476                 Token const & t = p.get_token();
 477
 478                 if (t.cat() == catEscape && t.cs() == "documentclass") {
 479                         is_full_document = true;
 480                         break;
 481                 }
 482         }
 483         p.reset();
 484
 485         while (is_full_document && p.good()) {
 486                 Token const & t = p.get_token();
 487
 488 #ifdef FILEDEBUG
 489                 cerr << "t: " << t << "\n";
 490 #endif
 491
 492                 //
 493                 // cat codes
 494                 //
 495                 if (!in_lyx_preamble &&
 496                     (t.cat() == catLetter ||
 497                      t.cat() == catSuper ||
 498                      t.cat() == catSub ||
 499                      t.cat() == catOther ||
 500                      t.cat() == catMath ||
 501                      t.cat() == catActive ||
 502                      t.cat() == catBegin ||
 503                      t.cat() == catEnd ||
 504                      t.cat() == catAlign ||
 505                      t.cat() == catParameter))
 506                         h_preamble << t.character();
 507
 508                 else if (!in_lyx_preamble &&
 509                          (t.cat() == catSpace || t.cat() == catNewline))
 510                         h_preamble << t.asInput();
 511
 512                 else if (t.cat() == catComment) {
 513                         // regex to parse comments
 514                         static regex const islyxfile("%% LyX .* created this file");
 515                         static regex const usercommands("User specified LaTeX commands");
 516
 517                         string const comment = t.asInput();
 518
 519                         // magically switch encoding default if it looks like XeLaTeX
 520                         static string const magicXeLaTeX =
 521                                 "% This document must be compiled with XeLaTeX ";
 522                         if (comment.size() > magicXeLaTeX.size()
 523                                   && comment.substr(0, magicXeLaTeX.size()) == magicXeLaTeX
 524                                   && h_inputencoding == "auto") {
 525                                 cerr << "XeLaTeX comment found, switching to UTF8\n";
 526                                 h_inputencoding = "utf8";
 527                         }
 528
 529                         smatch sub;
 530                         if (regex_search(comment, sub, islyxfile))
 531                                 is_lyx_file = true;
 532                         else if (is_lyx_file
 533                                  && regex_search(comment, sub, usercommands))
 534                                 in_lyx_preamble = false;
 535                         else if (!in_lyx_preamble)
 536                                 h_preamble << t.asInput();
 537                 }
 538
 539                 else if (t.cs() == "pagestyle")
 540                         h_paperpagestyle = p.verbatim_item();
 541
 542                 else if (t.cs() == "makeatletter") {
 543                         if (!is_lyx_file || !in_lyx_preamble
 544                             || p.getCatCode('@') != catLetter)
 545                                 h_preamble << "\\makeatletter";
 546                         p.setCatCode('@', catLetter);
 547                 }
 548
 549                 else if (t.cs() == "makeatother") {
 550                         if (!is_lyx_file || !in_lyx_preamble
 551                             || p.getCatCode('@') != catOther)
 552                                 h_preamble << "\\makeatother";
 553                         p.setCatCode('@', catOther);
 554                 }
 555
 556                 else if (t.cs() == "newcommand" || t.cs() == "renewcommand"
 557                             || t.cs() == "providecommand") {
 558                         bool star = false;
 559                         if (p.next_token().character() == '*') {
 560                                 p.get_token();
 561                                 star = true;
 562                         }
 563                         string const name = p.verbatim_item();
 564                         string const opt1 = p.getOpt();
 565                         string const opt2 = p.getFullOpt();
 566                         string const body = p.verbatim_item();
 567                         // font settings
 568                         if (name == "\\rmdefault")
 569                                 if (is_known(body, known_roman_fonts))
 570                                         h_font_roman = body;
 571
 572                         if (name == "\\sfdefault")
 573                                 if (is_known(body, known_sans_fonts))
 574                                         h_font_sans = body;
 575
 576                         if (name == "\\ttdefault")
 577                                 if (is_known(body, known_typewriter_fonts))
 578                                         h_font_typewriter = body;
 579
 580                         if (name == "\\familydefault") {
 581                                 string family = body;
 582                                 // remove leading "\"
 583                                 h_font_default_family = family.erase(0,1);
 584                         }
 585                         // only non-lyxspecific stuff
 586                         if (!in_lyx_preamble) {
 587                                 ostringstream ss;
 588                                 ss << '\\' << t.cs();
 589                                 if (star)
 590                                         ss << '*';
 591                                 ss << '{' << name << '}' << opt1 << opt2
 592                                    << '{' << body << "}";
 593                                 h_preamble << ss.str();
 594
 595                                 // Add the command to the known commands
 596                                 add_known_command(name, opt1, !opt2.empty());
 597 /*
 598                                 ostream & out = in_preamble ? h_preamble : os;
 599                                 out << "\\" << t.cs() << "{" << name << "}"
 600                                     << opts << "{" << body << "}";
 601 */
 602                         }
 603                 }
 604
 605                 else if (t.cs() == "documentclass") {
 606                         vector<string>::iterator it;
 607                         vector<string> opts = split_options(p.getArg('[', ']'));
 608                         handle_opt(opts, known_fontsizes, h_paperfontsize);
 609                         delete_opt(opts, known_fontsizes);
 610                         // delete "pt" at the end
 611                         string::size_type i = h_paperfontsize.find("pt");
 612                         if (i != string::npos)
 613                                 h_paperfontsize.erase(i);
 614                         // to avoid that the babel options overwrite the documentclass options
 615                         documentclass_language = false;
 616                         handle_opt(opts, known_languages, h_language);
 617                         delete_opt(opts, known_languages);
 618                         if (is_known(h_language, known_french_languages))
 619                                 h_language = "french";
 620                         else if (is_known(h_language, known_german_languages))
 621                                 h_language = "german";
 622                         else if (is_known(h_language, known_ngerman_languages))
 623                                 h_language = "ngerman";
 624                         else if (is_known(h_language, known_russian_languages))
 625                                 h_language = "russian";
 626                         else if (is_known(h_language, known_ukrainian_languages))
 627                                 h_language = "ukrainian";
 628                         h_quotes_language = h_language;
 629                         // paper orientation
 630                         if ((it = find(opts.begin(), opts.end(), "landscape")) != opts.end()) {
 631                                 h_paperorientation = "landscape";
 632                                 opts.erase(it);
 633                         }
 634                         // paper sides
 635                         if ((it = find(opts.begin(), opts.end(), "oneside"))
 636                                  != opts.end()) {
 637                                 h_papersides = "1";
 638                                 opts.erase(it);
 639                         }
 640                         if ((it = find(opts.begin(), opts.end(), "twoside"))
 641                                  != opts.end()) {
 642                                 h_papersides = "2";
 643                                 opts.erase(it);
 644                         }
 645                         // paper columns
 646                         if ((it = find(opts.begin(), opts.end(), "onecolumn"))
 647                                  != opts.end()) {
 648                                 h_papercolumns = "1";
 649                                 opts.erase(it);
 650                         }
 651                         if ((it = find(opts.begin(), opts.end(), "twocolumn"))
 652                                  != opts.end()) {
 653                                 h_papercolumns = "2";
 654                                 opts.erase(it);
 655                         }
 656                         // paper sizes
 657                         // some size options are know to any document classes, other sizes
 658                         // are handled by the \geometry command of the geometry package
 659                         handle_opt(opts, known_class_paper_sizes, h_papersize);
 660                         delete_opt(opts, known_class_paper_sizes);
 661                         // the remaining options
 662                         h_options = join(opts, ",");
 663                         h_textclass = p.getArg('{', '}');
 664                 }
 665
 666                 else if (t.cs() == "usepackage") {
 667                         string const options = p.getArg('[', ']');
 668                         string const name = p.getArg('{', '}');
 669                         vector<string> vecnames;
 670                         split(name, vecnames, ',');
 671                         vector<string>::const_iterator it  = vecnames.begin();
 672                         vector<string>::const_iterator end = vecnames.end();
 673                         for (; it != end; ++it)
 674                                 handle_package(p, trim(*it), options,
 675                                                in_lyx_preamble);
 676                 }
 677
 678                 else if (t.cs() == "inputencoding") {
 679                         string const encoding = p.getArg('{','}');
 680                         h_inputencoding = encoding;
 681                         p.setEncoding(encoding);
 682                 }
 683
 684                 else if (t.cs() == "newenvironment") {
 685                         string const name = p.getArg('{', '}');
 686                         ostringstream ss;
 687                         ss << "\\newenvironment{" << name << "}";
 688                         ss << p.getOpt();
 689                         ss << p.getOpt();
 690                         ss << '{' << p.verbatim_item() << '}';
 691                         ss << '{' << p.verbatim_item() << '}';
 692                         if (!in_lyx_preamble)
 693                                 h_preamble << ss.str();
 694                 }
 695
 696                 else if (t.cs() == "def") {
 697                         string name = p.get_token().cs();
 698                         while (p.next_token().cat() != catBegin)
 699                                 name += p.get_token().asString();
 700                         if (!in_lyx_preamble)
 701                                 h_preamble << "\\def\\" << name << '{'
 702                                            << p.verbatim_item() << "}";
 703                 }
 704
 705                 else if (t.cs() == "newcolumntype") {
 706                         string const name = p.getArg('{', '}');
 707                         trim(name);
 708                         int nargs = 0;
 709                         string opts = p.getOpt();
 710                         if (!opts.empty()) {
 711                                 istringstream is(string(opts, 1));
 712                                 is >> nargs;
 713                         }
 714                         special_columns[name[0]] = nargs;
 715                         h_preamble << "\\newcolumntype{" << name << "}";
 716                         if (nargs)
 717                                 h_preamble << "[" << nargs << "]";
 718                         h_preamble << "{" << p.verbatim_item() << "}";
 719                 }
 720
 721                 else if (t.cs() == "setcounter") {
 722                         string const name = p.getArg('{', '}');
 723                         string const content = p.getArg('{', '}');
 724                         if (name == "secnumdepth")
 725                                 h_secnumdepth = content;
 726                         else if (name == "tocdepth")
 727                                 h_tocdepth = content;
 728                         else
 729                                 h_preamble << "\\setcounter{" << name << "}{" << content << "}";
 730                 }
 731
 732                 else if (t.cs() == "setlength") {
 733                         string const name = p.verbatim_item();
 734                         string const content = p.verbatim_item();
 735                         // the paragraphs are only not indented when \parindent is set to zero
 736                         if (name == "\\parindent" && content != "") {
 737                                 if (content[0] == '0')
 738                                         h_paragraph_separation = "skip";
 739                         } else if (name == "\\parskip") {
 740                                 if (content == "\\smallskipamount")
 741                                         h_defskip = "smallskip";
 742                                 else if (content == "\\medskipamount")
 743                                         h_defskip = "medskip";
 744                                 else if (content == "\\bigskipamount")
 745                                         h_defskip = "bigskip";
 746                                 else
 747                                         h_defskip = content;
 748                         } else
 749                                 h_preamble << "\\setlength{" << name << "}{" << content << "}";
 750                 }
 751
 752                 else if (t.cs() == "onehalfspacing")
 753                         h_spacing = "onehalf";
 754
 755                 else if (t.cs() == "doublespacing")
 756                         h_spacing = "double";
 757
 758                 else if (t.cs() == "setstretch")
 759                         h_spacing = "other " + p.verbatim_item();
 760
 761                 else if (t.cs() == "begin") {
 762                         string const name = p.getArg('{', '}');
 763                         if (name == "document")
 764                                 break;
 765                         h_preamble << "\\begin{" << name << "}";
 766                 }
 767
 768                 else if (t.cs() == "geometry") {
 769                         h_use_geometry = "true";
 770                         vector<string> opts = split_options(p.getArg('{', '}'));
 771                         vector<string>::iterator it;
 772                         // paper orientation
 773                         if ((it = find(opts.begin(), opts.end(), "landscape")) != opts.end()) {
 774                                 h_paperorientation = "landscape";
 775                                 opts.erase(it);
 776                         }
 777                         // paper size
 778                         handle_opt(opts, known_paper_sizes, h_papersize);
 779                         delete_opt(opts, known_paper_sizes);
 780                         // page margins
 781                         char const * const * margin = known_paper_margins;
 782                         int k = -1;
 783                         for (; *margin; ++margin) {
 784                                 k += 1;
 785                                 // search for the "=" in e.g. "lmargin=2cm" to get the value
 786                                 for(size_t i = 0; i != opts.size(); i++) {
 787                                         if (opts.at(i).find(*margin) != string::npos) {
 788                                                 string::size_type pos = opts.at(i).find("=");
 789                                                 string value = opts.at(i).substr(pos + 1);
 790                                                 string name = known_coded_paper_margins[k];
 791                                                 h_margins += "\\" + name + " " + value + "\n";
 792                                         }
 793                                 }
 794                         }
 795                 }
 796
 797                 else if (t.cs() == "jurabibsetup") {
 798                         vector<string> jurabibsetup =
 799                                 split_options(p.getArg('{', '}'));
 800                         // add jurabibsetup to the jurabib package options
 801                         add_package("jurabib", jurabibsetup);
 802                         if (!jurabibsetup.empty()) {
 803                                 h_preamble << "\\jurabibsetup{"
 804                                            << join(jurabibsetup, ",") << '}';
 805                         }
 806                 }
 807
 808                 else if (!t.cs().empty() && !in_lyx_preamble)
 809                         h_preamble << '\\' << t.cs();
 810         }
 811         p.skip_spaces();
 812
 813         // Force textclass if the user wanted it
 814         if (!forceclass.empty())
 815                 h_textclass = forceclass;
 816         if (noweb_mode && !prefixIs(h_textclass, "literate-"))
 817                 h_textclass.insert(0, "literate-");
 818         FileName layoutfilename = libFileSearch("layouts", h_textclass, "layout");
 819         if (layoutfilename.empty()) {
 820                 cerr << "Error: Could not find layout file for textclass \"" << h_textclass << "\"." << endl;
 821                 exit(1);
 822         }
 823         tc.read(layoutfilename);
 824         if (h_papersides.empty()) {
 825                 ostringstream ss;
 826                 ss << tc.sides();
 827                 h_papersides = ss.str();
 828         }
 829         end_preamble(os, tc);
 830 }
 831
 832 // }])
 833
 834
 835 } // namespace lyx