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 namespace {
  53
  54 const char * const known_languages[] = { "afrikaans", "american", "arabic",
  55 "austrian", "bahasa", "basque", "belarusian", "brazil", "brazilian", "breton",
  56 "british", "bulgarian", "canadian", "canadien", "catalan", "croatian", "czech",
  57 "danish", "dutch", "english", "esperanto", "estonian", "finnish", "francais",
  58 "french", "frenchb", "frenchle", "frenchpro", "galician", "german", "germanb",
  59 "greek", "hebrew", "icelandic", "irish", "italian", "lsorbian", "magyar",
  60 "naustrian", "ngerman", "ngermanb", "norsk", "nynorsk", "polish", "portuges",
  61 "portuguese", "romanian", "russian", "russianb", "scottish", "serbian", "slovak",
  62 "slovene", "spanish", "swedish", "thai", "turkish", "ukraineb", "ukrainian",
  63 "usorbian", "welsh", 0};
  64
  65 //note this when updating to lyxformat 305:
  66 //bahasai, indonesian, and indon = equal to bahasa
  67 //malay and meyalu = equal to bahasam
  68
  69 const char * const known_brazilian_languages[] = {"brazil", "brazilian", 0};
  70 const char * const known_french_languages[] = {"french", "frenchb", "francais",
  71                                                 "frenchle", "frenchpro", 0};
  72 const char * const known_german_languages[] = {"german", "germanb", 0};
  73 const char * const known_ngerman_languages[] = {"ngerman", "ngermanb", 0};
  74 const char * const known_portuguese_languages[] = {"portuges", "portuguese", 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             = "1";
 124 string h_use_esint               = "1";
 125 string h_cite_engine             = "basic";
 126 string h_use_bibtopic            = "false";
 127 string h_paperorientation        = "portrait";
 128 string h_secnumdepth             = "3";
 129 string h_tocdepth                = "3";
 130 string h_paragraph_separation    = "indent";
 131 string h_defskip                 = "medskip";
 132 string h_quotes_language         = "english";
 133 string h_papercolumns            = "1";
 134 string h_papersides              = string();
 135 string h_paperpagestyle          = "default";
 136 string h_tracking_changes        = "false";
 137 string h_output_changes          = "false";
 138 string h_margins                 = "";
 139
 140 // returns true if at least one of the options in what has been found
 141 bool handle_opt(vector<string> & opts, char const * const * what, string & target)
 142 {
 143         if (opts.empty())
 144                 return false;
 145
 146         bool found = false;
 147         // the last language option is the document language (for babel and LyX)
 148         // the last size option is the document font size
 149         vector<string>::iterator it;
 150         vector<string>::iterator position = opts.begin();
 151         for (; *what; ++what) {
 152                 it = find(opts.begin(), opts.end(), *what);
 153                 if (it != opts.end()) {
 154                         if (it >= position) {
 155                                 found = true;
 156                                 target = *what;
 157                                 position = it;
 158                         }
 159                 }
 160         }
 161         return found;
 162 }
 163
 164
 165 void delete_opt(vector<string> & opts, char const * const * what)
 166 {
 167         if (opts.empty())
 168                 return;
 169
 170         // remove found options from the list
 171         // do this after handle_opt to avoid potential memory leaks
 172         vector<string>::iterator it;
 173         for (; *what; ++what) {
 174                 it = find(opts.begin(), opts.end(), *what);
 175                 if (it != opts.end())
 176                         opts.erase(it);
 177         }
 178 }
 179
 180
 181 /*!
 182  * Split a package options string (keyval format) into a vector.
 183  * Example input:
 184  *   authorformat=smallcaps,
 185  *   commabeforerest,
 186  *   titleformat=colonsep,
 187  *   bibformat={tabular,ibidem,numbered}
 188  */
 189 vector<string> split_options(string const & input)
 190 {
 191         vector<string> options;
 192         string option;
 193         Parser p(input);
 194         while (p.good()) {
 195                 Token const & t = p.get_token();
 196                 if (t.asInput() == ",") {
 197                         options.push_back(trim(option));
 198                         option.erase();
 199                 } else if (t.asInput() == "=") {
 200                         option += '=';
 201                         p.skip_spaces(true);
 202                         if (p.next_token().asInput() == "{")
 203                                 option += '{' + p.getArg('{', '}') + '}';
 204                 } else if (t.cat() != catSpace)
 205                         option += t.asInput();
 206         }
 207
 208         if (!option.empty())
 209                 options.push_back(trim(option));
 210
 211         return options;
 212 }
 213
 214
 215 /*!
 216  * Add package \p name with options \p options to used_packages.
 217  * Remove options from \p options that we don't want to output.
 218  */
 219 void add_package(string const & name, vector<string> & options)
 220 {
 221         // every package inherits the global options
 222         if (used_packages.find(name) == used_packages.end())
 223                 used_packages[name] = split_options(h_options);
 224
 225         vector<string> & v = used_packages[name];
 226         v.insert(v.end(), options.begin(), options.end());
 227         if (name == "jurabib") {
 228                 // Don't output the order argument (see the cite command
 229                 // handling code in text.cpp).
 230                 vector<string>::iterator end =
 231                         remove(options.begin(), options.end(), "natbiborder");
 232                 end = remove(options.begin(), end, "jurabiborder");
 233                 options.erase(end, options.end());
 234         }
 235 }
 236
 237
 238 // Given is a string like "scaled=0.9", return 0.9 * 100
 239 string const scale_as_percentage(string const & scale)
 240 {
 241         string::size_type pos = scale.find('=');
 242         if (pos != string::npos) {
 243                 string value = scale.substr(pos + 1);
 244                 if (isStrDbl(value))
 245                         return convert<string>(100 * convert<double>(value));
 246         }
 247         // If the input string didn't match our expectations.
 248         // return the default value "100"
 249         return "100";
 250 }
 251
 252
 253 void handle_package(Parser &p, string const & name, string const & opts,
 254                     bool in_lyx_preamble)
 255 {
 256         vector<string> options = split_options(opts);
 257         add_package(name, options);
 258         string scale;
 259
 260         // roman fonts
 261         if (is_known(name, known_roman_fonts)) {
 262                 h_font_roman = name;
 263                 p.skip_spaces();
 264         }
 265
 266         if (name == "fourier") {
 267                 h_font_roman = "utopia";
 268                 // when font uses real small capitals
 269                 if (opts == "expert")
 270                         h_font_sc = "true";
 271         }
 272
 273         if (name == "mathpazo")
 274                 h_font_roman = "palatino";
 275
 276         if (name == "mathptmx")
 277                 h_font_roman = "times";
 278
 279         // sansserif fonts
 280         if (is_known(name, known_sans_fonts)) {
 281                 h_font_sans = name;
 282                 if (!opts.empty()) {
 283                         scale = opts;
 284                         h_font_sf_scale = scale_as_percentage(scale);
 285                 }
 286         }
 287
 288         // typewriter fonts
 289         if (is_known(name, known_typewriter_fonts)) {
 290                 h_font_typewriter = name;
 291                 if (!opts.empty()) {
 292                         scale = opts;
 293                         h_font_tt_scale = scale_as_percentage(scale);
 294                 }
 295         }
 296
 297         // font uses old-style figure
 298         if (name == "eco")
 299                 h_font_osf = "true";
 300
 301         else if (name == "amsmath" || name == "amssymb")
 302                 h_use_amsmath = "2";
 303
 304         else if (name == "esint")
 305                 h_use_esint = "2";
 306
 307         else if (name == "babel" && !opts.empty()) {
 308                 // check if more than one option was used - used later for inputenc
 309                 // in case inputenc is parsed before babel, set the encoding to auto
 310                 if (options.begin() != options.end() - 1) {
 311                         one_language = false;
 312                         h_inputencoding = "auto";
 313                 }
 314                 // babel takes the last language of the option of its \usepackage
 315                 // call as document language. If there is no such language option, the
 316                 // last language in the documentclass options is used.
 317                 handle_opt(options, known_languages, h_language);
 318                 delete_opt(options, known_languages);
 319         }
 320
 321         else if (name == "fontenc")
 322                  ;// ignore this
 323
 324         else if (name == "inputenc") {
 325                 // h_inputencoding is only set when there is not more than one
 326                 // inputenc option because otherwise h_inputencoding must be
 327                 // set to "auto" (the default encoding of the document language)
 328                 // Therefore check for the "," character.
 329                 // It is also only set when there is not more then one babel
 330                 // language option but this is handled in the routine for babel.
 331                 if (opts.find(",") == string::npos && one_language == true)
 332                         h_inputencoding = opts;
 333                 if (!options.empty())
 334                         p.setEncoding(options.back());
 335                 options.clear();
 336         }
 337
 338         else if (name == "makeidx")
 339                 ; // ignore this
 340
 341         else if (name == "prettyref")
 342                 ; // ignore this
 343
 344         else if (name == "varioref")
 345                 ; // ignore this
 346
 347         else if (name == "verbatim")
 348                 ; // ignore this
 349
 350         else if (name == "nomencl")
 351                 ; // ignore this
 352
 353         else if (name == "textcomp")
 354                 ; // ignore this
 355
 356         else if (name == "url")
 357                 ; // ignore this
 358
 359         else if (name == "color") {
 360                 // with the following command this package is only loaded when needed for
 361                 // undefined colors, since we only support the predefined colors
 362                 h_preamble << "\\@ifundefined{definecolor}\n {\\usepackage{color}}{}\n";
 363         }
 364
 365         else if (name == "graphicx")
 366                 ; // ignore this
 367
 368         else if (name == "setspace")
 369                 ; // ignore this
 370
 371         else if (name == "geometry")
 372                 ; // Ignore this, the geometry settings are made by the \geometry
 373                   // command. This command is handled below.
 374
 375         else if (is_known(name, known_languages))
 376                 h_language = name;
 377
 378         else if (name == "natbib") {
 379                 h_cite_engine = "natbib_authoryear";
 380                 vector<string>::iterator it =
 381                         find(options.begin(), options.end(), "authoryear");
 382                 if (it != options.end())
 383                         options.erase(it);
 384                 else {
 385                         it = find(options.begin(), options.end(), "numbers");
 386                         if (it != options.end()) {
 387                                 h_cite_engine = "natbib_numerical";
 388                                 options.erase(it);
 389                         }
 390                 }
 391         }
 392
 393         else if (name == "jurabib")
 394                 h_cite_engine = "jurabib";
 395
 396         else if (!in_lyx_preamble) {
 397                 if (options.empty())
 398                         h_preamble << "\\usepackage{" << name << "}";
 399                 else {
 400                         h_preamble << "\\usepackage[" << opts << "]{"
 401                                    << name << "}";
 402                         options.clear();
 403                 }
 404         }
 405
 406         // We need to do something with the options...
 407         if (!options.empty())
 408                 cerr << "Ignoring options '" << join(options, ",")
 409                      << "' of package " << name << '.' << endl;
 410
 411         // remove the whitespace
 412         p.skip_spaces();
 413 }
 414
 415
 416
 417 void end_preamble(ostream & os, TextClass const & /*textclass*/)
 418 {
 419         // merge synonym languages
 420         if (is_known(h_language, known_brazilian_languages))
 421                 h_language = "brazilian";
 422         else if (is_known(h_language, known_french_languages))
 423                 h_language = "french";
 424         else if (is_known(h_language, known_german_languages))
 425                 h_language = "german";
 426         else if (is_known(h_language, known_ngerman_languages))
 427                 h_language = "ngerman";
 428         else if (is_known(h_language, known_portuguese_languages))
 429                 h_language = "portuguese";
 430         else if (is_known(h_language, known_russian_languages))
 431                 h_language = "russian";
 432         else if (is_known(h_language, known_ukrainian_languages))
 433                 h_language = "ukrainian";
 434
 435         // set the quote language
 436         // LyX only knows the following quotes languages:
 437         // english, swedish, german, polish, french and danish
 438         // english is already set as default
 439         // FIXME: for a real solution we need a list what language use
 440         // what quote style
 441         if (h_language == "swedish" || h_language == "german"
 442                 || h_language == "polish" || h_language == "french"
 443                 || h_language == "danish")
 444                 h_quotes_language = h_language;
 445         // there is only the quotes language "german"
 446         if (h_language == "ngerman")
 447                 h_quotes_language = "german";
 448
 449         // output the LyX file settings
 450         os << "#LyX file created by tex2lyx " << PACKAGE_VERSION << "\n"
 451            << "\\lyxformat 264\n"
 452            << "\\begin_document\n"
 453            << "\\begin_header\n"
 454            << "\\textclass " << h_textclass << "\n";
 455         if (!h_preamble.str().empty())
 456                 os << "\\begin_preamble\n" << h_preamble.str() << "\n\\end_preamble\n";
 457         if (!h_options.empty())
 458                 os << "\\options " << h_options << "\n";
 459         os << "\\language " << h_language << "\n"
 460            << "\\inputencoding " << h_inputencoding << "\n"
 461            << "\\font_roman " << h_font_roman << "\n"
 462            << "\\font_sans " << h_font_sans << "\n"
 463            << "\\font_typewriter " << h_font_typewriter << "\n"
 464            << "\\font_default_family " << h_font_default_family << "\n"
 465            << "\\font_sc " << h_font_sc << "\n"
 466            << "\\font_osf " << h_font_osf << "\n"
 467            << "\\font_sf_scale " << h_font_sf_scale << "\n"
 468            << "\\font_tt_scale " << h_font_tt_scale << "\n"
 469            << "\\graphics " << h_graphics << "\n"
 470            << "\\paperfontsize " << h_paperfontsize << "\n"
 471            << "\\spacing " << h_spacing << "\n"
 472            << "\\papersize " << h_papersize << "\n"
 473            << "\\use_geometry " << h_use_geometry << "\n"
 474            << "\\use_amsmath " << h_use_amsmath << "\n"
 475            << "\\use_esint " << h_use_esint << "\n"
 476            << "\\cite_engine " << h_cite_engine << "\n"
 477            << "\\use_bibtopic " << h_use_bibtopic << "\n"
 478            << "\\paperorientation " << h_paperorientation << "\n"
 479            << h_margins
 480            << "\\secnumdepth " << h_secnumdepth << "\n"
 481            << "\\tocdepth " << h_tocdepth << "\n"
 482            << "\\paragraph_separation " << h_paragraph_separation << "\n"
 483            << "\\defskip " << h_defskip << "\n"
 484            << "\\quotes_language " << h_quotes_language << "\n"
 485            << "\\papercolumns " << h_papercolumns << "\n"
 486            << "\\papersides " << h_papersides << "\n"
 487            << "\\paperpagestyle " << h_paperpagestyle << "\n"
 488            << "\\tracking_changes " << h_tracking_changes << "\n"
 489            << "\\output_changes " << h_output_changes << "\n"
 490            << "\\end_header\n\n"
 491            << "\\begin_body\n";
 492         // clear preamble for subdocuments
 493         h_preamble.str("");
 494 }
 495
 496 } // anonymous namespace
 497
 498 void parse_preamble(Parser & p, ostream & os,
 499         string const & forceclass, TeX2LyXDocClass & tc)
 500 {
 501         // initialize fixed types
 502         special_columns['D'] = 3;
 503         bool is_full_document = false;
 504         bool is_lyx_file = false;
 505         bool in_lyx_preamble = false;
 506
 507         // determine whether this is a full document or a fragment for inclusion
 508         while (p.good()) {
 509                 Token const & t = p.get_token();
 510
 511                 if (t.cat() == catEscape && t.cs() == "documentclass") {
 512                         is_full_document = true;
 513                         break;
 514                 }
 515         }
 516         p.reset();
 517
 518         while (is_full_document && p.good()) {
 519                 Token const & t = p.get_token();
 520
 521 #ifdef FILEDEBUG
 522                 cerr << "t: " << t << "\n";
 523 #endif
 524
 525                 //
 526                 // cat codes
 527                 //
 528                 if (!in_lyx_preamble &&
 529                     (t.cat() == catLetter ||
 530                      t.cat() == catSuper ||
 531                      t.cat() == catSub ||
 532                      t.cat() == catOther ||
 533                      t.cat() == catMath ||
 534                      t.cat() == catActive ||
 535                      t.cat() == catBegin ||
 536                      t.cat() == catEnd ||
 537                      t.cat() == catAlign ||
 538                      t.cat() == catParameter))
 539                         h_preamble << t.cs();
 540
 541                 else if (!in_lyx_preamble &&
 542                          (t.cat() == catSpace || t.cat() == catNewline))
 543                         h_preamble << t.asInput();
 544
 545                 else if (t.cat() == catComment) {
 546                         // regex to parse comments (currently not used)
 547                         static regex const islyxfile("%% LyX .* created this file");
 548                         static regex const usercommands("User specified LaTeX commands");
 549
 550                         string const comment = t.asInput();
 551
 552                         // magically switch encoding default if it looks like XeLaTeX
 553                         static string const magicXeLaTeX =
 554                                 "% This document must be compiled with XeLaTeX ";
 555                         if (comment.size() > magicXeLaTeX.size()
 556                                   && comment.substr(0, magicXeLaTeX.size()) == magicXeLaTeX
 557                                   && h_inputencoding == "auto") {
 558                                 cerr << "XeLaTeX comment found, switching to UTF8\n";
 559                                 h_inputencoding = "utf8";
 560                         }
 561                         smatch sub;
 562                         if (regex_search(comment, sub, islyxfile)) {
 563                                 is_lyx_file = true;
 564                                 in_lyx_preamble = true;
 565                         } else if (is_lyx_file
 566                                    && regex_search(comment, sub, usercommands))
 567                                 in_lyx_preamble = false;
 568                         else if (!in_lyx_preamble)
 569                                 h_preamble << t.asInput();
 570                 }
 571
 572                 else if (t.cs() == "pagestyle")
 573                         h_paperpagestyle = p.verbatim_item();
 574
 575                 else if (t.cs() == "makeatletter") {
 576                         // LyX takes care of this
 577                         p.setCatCode('@', catLetter);
 578                 }
 579
 580                 else if (t.cs() == "makeatother") {
 581                         // LyX takes care of this
 582                         p.setCatCode('@', catOther);
 583                 }
 584
 585                 else if (t.cs() == "newcommand" || t.cs() == "renewcommand"
 586                             || t.cs() == "providecommand"
 587                                 || t.cs() == "DeclareRobustCommand"
 588                                 || t.cs() == "ProvideTextCommandDefault"
 589                                 || t.cs() == "DeclareMathAccent") {
 590                         bool star = false;
 591                         if (p.next_token().character() == '*') {
 592                                 p.get_token();
 593                                 star = true;
 594                         }
 595                         string const name = p.verbatim_item();
 596                         string const opt1 = p.getOpt();
 597                         string const opt2 = p.getFullOpt();
 598                         string const body = p.verbatim_item();
 599                         // font settings
 600                         if (name == "\\rmdefault")
 601                                 if (is_known(body, known_roman_fonts))
 602                                         h_font_roman = body;
 603                         if (name == "\\sfdefault")
 604                                 if (is_known(body, known_sans_fonts))
 605                                         h_font_sans = body;
 606                         if (name == "\\ttdefault")
 607                                 if (is_known(body, known_typewriter_fonts))
 608                                         h_font_typewriter = body;
 609                         if (name == "\\familydefault") {
 610                                 string family = body;
 611                                 // remove leading "\"
 612                                 h_font_default_family = family.erase(0,1);
 613                         }
 614                         // only non-lyxspecific stuff
 615                         if (!in_lyx_preamble) {
 616                                 ostringstream ss;
 617                                 ss << '\\' << t.cs();
 618                                 if (star)
 619                                         ss << '*';
 620                                 ss << '{' << name << '}' << opt1 << opt2
 621                                    << '{' << body << "}";
 622                                 h_preamble << ss.str();
 623
 624                                 // Add the command to the known commands
 625                                 add_known_command(name, opt1, !opt2.empty());
 626 /*
 627                                 ostream & out = in_preamble ? h_preamble : os;
 628                                 out << "\\" << t.cs() << "{" << name << "}"
 629                                     << opts << "{" << body << "}";
 630 */
 631                         }
 632                 }
 633
 634                 else if (t.cs() == "documentclass") {
 635                         vector<string>::iterator it;
 636                         vector<string> opts = split_options(p.getArg('[', ']'));
 637                         handle_opt(opts, known_fontsizes, h_paperfontsize);
 638                         delete_opt(opts, known_fontsizes);
 639                         // delete "pt" at the end
 640                         string::size_type i = h_paperfontsize.find("pt");
 641                         if (i != string::npos)
 642                                 h_paperfontsize.erase(i);
 643                         // The documentclass options are always parsed before the options
 644                         // of the babel call so that a language cannot overwrite the babel
 645                         // options.
 646                         handle_opt(opts, known_languages, h_language);
 647                         delete_opt(opts, known_languages);
 648
 649                         // paper orientation
 650                         if ((it = find(opts.begin(), opts.end(), "landscape")) != opts.end()) {
 651                                 h_paperorientation = "landscape";
 652                                 opts.erase(it);
 653                         }
 654                         // paper sides
 655                         if ((it = find(opts.begin(), opts.end(), "oneside"))
 656                                  != opts.end()) {
 657                                 h_papersides = "1";
 658                                 opts.erase(it);
 659                         }
 660                         if ((it = find(opts.begin(), opts.end(), "twoside"))
 661                                  != opts.end()) {
 662                                 h_papersides = "2";
 663                                 opts.erase(it);
 664                         }
 665                         // paper columns
 666                         if ((it = find(opts.begin(), opts.end(), "onecolumn"))
 667                                  != opts.end()) {
 668                                 h_papercolumns = "1";
 669                                 opts.erase(it);
 670                         }
 671                         if ((it = find(opts.begin(), opts.end(), "twocolumn"))
 672                                  != opts.end()) {
 673                                 h_papercolumns = "2";
 674                                 opts.erase(it);
 675                         }
 676                         // paper sizes
 677                         // some size options are know to any document classes, other sizes
 678                         // are handled by the \geometry command of the geometry package
 679                         handle_opt(opts, known_class_paper_sizes, h_papersize);
 680                         delete_opt(opts, known_class_paper_sizes);
 681                         // the remaining options
 682                         h_options = join(opts, ",");
 683                         h_textclass = p.getArg('{', '}');
 684                 }
 685
 686                 else if (t.cs() == "usepackage") {
 687                         string const options = p.getArg('[', ']');
 688                         string const name = p.getArg('{', '}');
 689                         vector<string> vecnames;
 690                         split(name, vecnames, ',');
 691                         vector<string>::const_iterator it  = vecnames.begin();
 692                         vector<string>::const_iterator end = vecnames.end();
 693                         for (; it != end; ++it)
 694                                 handle_package(p, trim(*it), options,
 695                                                in_lyx_preamble);
 696                 }
 697
 698                 else if (t.cs() == "inputencoding") {
 699                         string const encoding = p.getArg('{','}');
 700                         h_inputencoding = encoding;
 701                         p.setEncoding(encoding);
 702                 }
 703
 704                 else if (t.cs() == "newenvironment") {
 705                         string const name = p.getArg('{', '}');
 706                         ostringstream ss;
 707                         ss << "\\newenvironment{" << name << "}";
 708                         ss << p.getOpt();
 709                         ss << p.getOpt();
 710                         ss << '{' << p.verbatim_item() << '}';
 711                         ss << '{' << p.verbatim_item() << '}';
 712                         if (!in_lyx_preamble)
 713                                 h_preamble << ss.str();
 714                 }
 715
 716                 else if (t.cs() == "def") {
 717                         string name = p.get_token().cs();
 718                         while (p.next_token().cat() != catBegin)
 719                                 name += p.get_token().cs();
 720                         if (!in_lyx_preamble)
 721                                 h_preamble << "\\def\\" << name << '{'
 722                                            << p.verbatim_item() << "}";
 723                 }
 724
 725                 else if (t.cs() == "newcolumntype") {
 726                         string const name = p.getArg('{', '}');
 727                         trim(name);
 728                         int nargs = 0;
 729                         string opts = p.getOpt();
 730                         if (!opts.empty()) {
 731                                 istringstream is(string(opts, 1));
 732                                 is >> nargs;
 733                         }
 734                         special_columns[name[0]] = nargs;
 735                         h_preamble << "\\newcolumntype{" << name << "}";
 736                         if (nargs)
 737                                 h_preamble << "[" << nargs << "]";
 738                         h_preamble << "{" << p.verbatim_item() << "}";
 739                 }
 740
 741                 else if (t.cs() == "setcounter") {
 742                         string const name = p.getArg('{', '}');
 743                         string const content = p.getArg('{', '}');
 744                         if (name == "secnumdepth")
 745                                 h_secnumdepth = content;
 746                         else if (name == "tocdepth")
 747                                 h_tocdepth = content;
 748                         else
 749                                 h_preamble << "\\setcounter{" << name << "}{" << content << "}";
 750                 }
 751
 752                 else if (t.cs() == "setlength") {
 753                         string const name = p.verbatim_item();
 754                         string const content = p.verbatim_item();
 755                         // the paragraphs are only not indented when \parindent is set to zero
 756                         if (name == "\\parindent" && content != "") {
 757                                 if (content[0] == '0')
 758                                         h_paragraph_separation = "skip";
 759                         } else if (name == "\\parskip") {
 760                                 if (content == "\\smallskipamount")
 761                                         h_defskip = "smallskip";
 762                                 else if (content == "\\medskipamount")
 763                                         h_defskip = "medskip";
 764                                 else if (content == "\\bigskipamount")
 765                                         h_defskip = "bigskip";
 766                                 else
 767                                         h_defskip = content;
 768                         } else
 769                                 h_preamble << "\\setlength{" << name << "}{" << content << "}";
 770                 }
 771
 772                 else if (t.cs() == "onehalfspacing")
 773                         h_spacing = "onehalf";
 774
 775                 else if (t.cs() == "doublespacing")
 776                         h_spacing = "double";
 777
 778                 else if (t.cs() == "setstretch")
 779                         h_spacing = "other " + p.verbatim_item();
 780
 781                 else if (t.cs() == "begin") {
 782                         string const name = p.getArg('{', '}');
 783                         if (name == "document")
 784                                 break;
 785                         h_preamble << "\\begin{" << name << "}";
 786                 }
 787
 788                 else if (t.cs() == "geometry") {
 789                         h_use_geometry = "true";
 790                         vector<string> opts = split_options(p.getArg('{', '}'));
 791                         vector<string>::iterator it;
 792                         // paper orientation
 793                         if ((it = find(opts.begin(), opts.end(), "landscape")) != opts.end()) {
 794                                 h_paperorientation = "landscape";
 795                                 opts.erase(it);
 796                         }
 797                         // paper size
 798                         handle_opt(opts, known_paper_sizes, h_papersize);
 799                         delete_opt(opts, known_paper_sizes);
 800                         // page margins
 801                         char const * const * margin = known_paper_margins;
 802                         int k = -1;
 803                         for (; *margin; ++margin) {
 804                                 k += 1;
 805                                 // search for the "=" in e.g. "lmargin=2cm" to get the value
 806                                 for(size_t i = 0; i != opts.size(); i++) {
 807                                         if (opts.at(i).find(*margin) != string::npos) {
 808                                                 string::size_type pos = opts.at(i).find("=");
 809                                                 string value = opts.at(i).substr(pos + 1);
 810                                                 string name = known_coded_paper_margins[k];
 811                                                 h_margins += "\\" + name + " " + value + "\n";
 812                                         }
 813                                 }
 814                         }
 815                 }
 816
 817                 else if (t.cs() == "jurabibsetup") {
 818                         vector<string> jurabibsetup =
 819                                 split_options(p.getArg('{', '}'));
 820                         // add jurabibsetup to the jurabib package options
 821                         add_package("jurabib", jurabibsetup);
 822                         if (!jurabibsetup.empty()) {
 823                                 h_preamble << "\\jurabibsetup{"
 824                                            << join(jurabibsetup, ",") << '}';
 825                         }
 826                 }
 827
 828                 else if (!t.cs().empty() && !in_lyx_preamble)
 829                         h_preamble << '\\' << t.cs();
 830
 831                 // remove the whitespace
 832                 p.skip_spaces();
 833         }
 834
 835         // remove the whitespace
 836         p.skip_spaces();
 837
 838         // Force textclass if the user wanted it
 839         if (!forceclass.empty())
 840                 h_textclass = forceclass;
 841         if (noweb_mode && !prefixIs(h_textclass, "literate-"))
 842                 h_textclass.insert(0, "literate-");
 843         FileName layoutfilename = libFileSearch("layouts", h_textclass, "layout");
 844         if (layoutfilename.empty()) {
 845                 cerr << "Error: Could not find layout file for textclass \"" << h_textclass << "\"." << endl;
 846                 exit(1);
 847         }
 848         tc.read(layoutfilename);
 849         if (h_papersides.empty()) {
 850                 ostringstream ss;
 851                 ss << tc.sides();
 852                 h_papersides = ss.str();
 853         }
 854         end_preamble(os, tc);
 855 }
 856
 857 // }])
 858
 859
 860 } // namespace lyx