src/tex2lyx/tex2lyx.C

   1 /** The .tex to .lyx converter
   2     \author André Pönitz (2003)
   3  */
   4
   5 // {[(
   6
   7 #include <config.h>
   8
   9 #include <algorithm>
  10 #include <cctype>
  11 #include <fstream>
  12 #include <iostream>
  13 #include <sstream>
  14 #include <stack>
  15 #include <string>
  16 #include <vector>
  17
  18 #include "texparser.h"
  19
  20 using std::count_if;
  21 using std::cout;
  22 using std::cerr;
  23 using std::endl;
  24 using std::fill;
  25 using std::getline;
  26 using std::ios;
  27 using std::ifstream;
  28 using std::istream;
  29 using std::istringstream;
  30 using std::ostream;
  31 using std::ostringstream;
  32 using std::stack;
  33 using std::string;
  34 using std::vector;
  35
  36
  37 namespace {
  38
  39 char const OPEN = '<';
  40 char const CLOSE = '>';
  41 char const TAB = '\001';
  42 char const LINE = '\002';
  43
  44 const char * known_languages[] = { "austrian", "babel", "bahasa", "basque",
  45 "breton", "british", "bulgarian", "catalan", "croatian", "czech",
  46 "danish", "dutch", "english", "esperanto", "estonian", "finnish",
  47 "francais", "frenchb", "galician", "germanb", "greek", "hebcal", "hebfont",
  48 "hebrew", "hebrew_newcode", "hebrew_oldcode", "hebrew_p", "hyphen",
  49 "icelandic", "irish", "italian", "latin", "lgrcmr", "lgrcmro", "lgrcmss",
  50 "lgrcmtt", "lgrenc", "lgrlcmss", "lgrlcmtt", "lheclas", "lhecmr",
  51 "lhecmss", "lhecmtt", "lhecrml", "lheenc", "lhefr", "lheredis", "lheshold",
  52 "lheshscr", "lheshstk", "lsorbian", "magyar", "naustrian", "ngermanb",
  53 "ngerman", "norsk", "polish", "portuges", "rlbabel", "romanian",
  54 "russianb", "samin", "scottish", "serbian", "slovak", "slovene", "spanish",
  55 "swedish", "turkish", "ukraineb", "usorbian", "welsh", 0};
  56
  57 const char * known_fontsizes[] = { "10pt", "11pt", "12pt", 0 };
  58
  59
  60 const char * known_math_envs[] = {"equation", "eqnarray", "eqnarray*",
  61 "align", "align*", 0};
  62
  63
  64 // some ugly stuff
  65 ostringstream h_preamble;
  66 string h_textclass               = "article";
  67 string h_options                 = "";
  68 string h_language                = "english";
  69 string h_inputencoding           = "latin1";
  70 string h_fontscheme              = "default";
  71 string h_graphics                = "default";
  72 string h_paperfontsize           = "default";
  73 string h_spacing                 = "single";
  74 string h_papersize               = "default";
  75 string h_paperpackage            = "default";
  76 string h_use_geometry            = "0";
  77 string h_use_amsmath             = "0";
  78 string h_use_natbib              = "0";
  79 string h_use_numerical_citations = "0";
  80 string h_paperorientation        = "portrait";
  81 string h_secnumdepth             = "3";
  82 string h_tocdepth                = "3";
  83 string h_paragraph_separation    = "indent";
  84 string h_defskip                 = "medskip";
  85 string h_quotes_language         = "english";
  86 string h_quotes_times            = "1";
  87 string h_papercolumns            = "1";
  88 string h_papersides              = "1";
  89 string h_paperpagestyle          = "default";
  90 string h_tracking_changes        = "0";
  91
  92 // indicates whether we are in the preamble
  93 bool in_preamble = true;
  94
  95 // current stack of nested environments
  96 stack<string> active_environments;
  97
  98
  99 string cap(string s)
 100 {
 101         if (s.size())
 102                 s[0] = toupper(s[0]);
 103         return s;
 104 }
 105
 106
 107 string const trim(string const & a, char const * p = " ")
 108 {
 109         // lyx::Assert(p);
 110
 111         if (a.empty() || !*p)
 112                 return a;
 113
 114         string::size_type r = a.find_last_not_of(p);
 115         string::size_type l = a.find_first_not_of(p);
 116
 117         // Is this the minimal test? (lgb)
 118         if (r == string::npos && l == string::npos)
 119                 return string();
 120
 121         return a.substr(l, r - l + 1);
 122 }
 123
 124
 125 void split(string const & s, vector<string> & result, char delim)
 126 {
 127         istringstream is(s);
 128         string t;
 129         while (getline(is, t, delim))
 130                 result.push_back(t);
 131 }
 132
 133
 134 string join(vector<string> const & input, char delim)
 135 {
 136         ostringstream os;
 137         for (size_t i = 0; i != input.size(); ++i) {
 138                 if (i)
 139                         os << delim;
 140                 os << input[i];
 141         }
 142         return os.str();
 143 }
 144
 145
 146 void handle_opt(vector<string> & opts, char const ** what, string & target)
 147 {
 148         if (opts.empty())
 149                 return;
 150
 151         for ( ; *what; ++what) {
 152                 vector<string>::iterator it = find(opts.begin(), opts.end(), *what);
 153                 if (it != opts.end()) {
 154                         //cerr << "### found option '" << *what << "'\n";
 155                         target = *what;
 156                         opts.erase(it);
 157                         return;
 158                 }
 159         }
 160 }
 161
 162
 163 bool is_math_env(string const & name)
 164 {
 165         for (char const ** what = known_math_envs; *what; ++what)
 166                 if (*what == name)
 167                         return true;
 168         return false;
 169 }
 170
 171
 172 bool is_heading(string const & name)
 173 {
 174         return
 175                 name == "caption" ||
 176                 name == "title" ||
 177                 name == "author" ||
 178                 name == "paragraph" ||
 179                 name == "chapter" ||
 180                 name == "section" ||
 181                 name == "subsection" ||
 182                 name == "subsubsection";
 183 }
 184
 185
 186 bool is_latex_command(string const & name)
 187 {
 188         return
 189                 name == "ref" ||
 190                 name == "cite" ||
 191                 name == "label" ||
 192                 name == "index" ||
 193                 name == "printindex";
 194 }
 195
 196
 197 void begin_inset(ostream & os, string const & name)
 198 {
 199         os << "\n\\begin_inset " << name;
 200 }
 201
 202
 203 void end_inset(ostream & os)
 204 {
 205         os << "\n\\end_inset\n";
 206 }
 207
 208
 209 string curr_env()
 210 {
 211         return active_environments.empty() ? string() : active_environments.top();
 212 }
 213
 214
 215 void handle_ert(ostream & os, string const & s)
 216 {
 217         begin_inset(os, "ERT");
 218         os << "\nstatus Collapsed\n\n\\layout Standard\n\n";
 219         for (string::const_iterator it = s.begin(), et = s.end(); it != et; ++it) {
 220                 if (*it == '\\')
 221                         os << "\n\\backslash\n";
 222                 else
 223                         os << *it;
 224         }
 225         end_inset(os);
 226 }
 227
 228
 229 void handle_par(ostream & os)
 230 {
 231         if (active_environments.empty())
 232                 return;
 233         os << "\n\\layout ";
 234         string s = curr_env();
 235         if (s == "document" || s == "table") {
 236                 os << "Standard\n\n";
 237                 return;
 238         }
 239         if (s == "lyxcode") {
 240                 os << "LyX-Code\n\n";
 241                 return;
 242         }
 243         os << cap(s) << "\n\n";
 244 }
 245
 246
 247 void handle_package(string const & name, string const & options)
 248 {
 249         if (name == "a4wide") {
 250                 h_papersize = "a4paper";
 251                 h_paperpackage = "widemarginsa4";
 252         } else if (name == "ae")
 253                 h_fontscheme = "ae";
 254         else if (name == "aecompl")
 255                 h_fontscheme = "ae";
 256         else if (name == "amsmath")
 257                 h_use_amsmath = "1";
 258         else if (name == "amssymb")
 259                 h_use_amsmath = "1";
 260         else if (name == "babel")
 261                 ; // ignore this
 262         else if (name == "fontenc")
 263                 ; // ignore this
 264         else if (name == "inputenc")
 265                 h_inputencoding = options;
 266         else if (name == "makeidx")
 267                 ; // ignore this
 268         else if (name == "verbatim")
 269                 ; // ignore this
 270         else {
 271                 if (options.size())
 272                         h_preamble << "\\usepackage[" << options << "]{" << name << "}\n";
 273                 else
 274                         h_preamble << "\\usepackage{" << name << "}\n";
 275         }
 276 }
 277
 278
 279 void handle_table(Parser &, ostream &)
 280 {
 281         // \begin{table} has been read
 282         //parse(end
 283 }
 284
 285
 286 string wrap(string const & cmd, string const & str)
 287 {
 288         return OPEN + cmd + ' ' + str + CLOSE;
 289 }
 290
 291
 292 vector<string> extract_col_align(string const & s)
 293 {
 294         vector<string> res;
 295         for (size_t i = 0; i < s.size(); ++i) {
 296                 switch (s[i]) {
 297                         case 'c':
 298                                 res.push_back("center");
 299                                 break;
 300                         case 'l':
 301                                 res.push_back("left");
 302                                 break;
 303                         case 'r':
 304                                 res.push_back("right");
 305                                 break;
 306                         default:
 307                                 res.push_back("right");
 308                                 break;
 309                 }
 310         }
 311         return res;
 312 }
 313
 314
 315 void end_preamble(ostream & os)
 316 {
 317         in_preamble = false;
 318         os << "# tex2lyx 0.0.2 created this file\n"
 319            << "\\lyxformat 222\n"
 320            << "\\textclass " << h_textclass << "\n"
 321            << "\\begin_preamble\n" << h_preamble.str() << "\n\\end_preamble\n"
 322            << "\\options " << h_options << "\n"
 323            << "\\language " << h_language << "\n"
 324            << "\\inputencoding " << h_inputencoding << "\n"
 325            << "\\fontscheme " << h_fontscheme << "\n"
 326            << "\\graphics " << h_graphics << "\n"
 327            << "\\paperfontsize " << h_paperfontsize << "\n"
 328            << "\\spacing " << h_spacing << "\n"
 329            << "\\papersize " << h_papersize << "\n"
 330            << "\\paperpackage " << h_paperpackage << "\n"
 331            << "\\use_geometry " << h_use_geometry << "\n"
 332            << "\\use_amsmath " << h_use_amsmath << "\n"
 333            << "\\use_natbib " << h_use_natbib << "\n"
 334            << "\\use_numerical_citations " << h_use_numerical_citations << "\n"
 335            << "\\paperorientation " << h_paperorientation << "\n"
 336            << "\\secnumdepth " << h_secnumdepth << "\n"
 337            << "\\tocdepth " << h_tocdepth << "\n"
 338            << "\\paragraph_separation " << h_paragraph_separation << "\n"
 339            << "\\defskip " << h_defskip << "\n"
 340            << "\\quotes_language " << h_quotes_language << "\n"
 341            << "\\quotes_times " << h_quotes_times << "\n"
 342            << "\\papercolumns " << h_papercolumns << "\n"
 343            << "\\papersides " << h_papersides << "\n"
 344            << "\\paperpagestyle " << h_paperpagestyle << "\n"
 345            << "\\tracking_changes " << h_tracking_changes << "\n";
 346 }
 347
 348
 349 void parse(Parser & p, ostream & os, unsigned flags, mode_type mode)
 350 {
 351         while (p.good()) {
 352                 Token const & t = p.getToken();
 353
 354 #ifdef FILEDEBUG
 355                 cerr << "t: " << t << " flags: " << flags << "\n";
 356                 //cell->dump();
 357 #endif
 358
 359                 if (flags & FLAG_ITEM) {
 360                         if (t.cat() == catSpace)
 361                                 continue;
 362
 363                         flags &= ~FLAG_ITEM;
 364                         if (t.cat() == catBegin) {
 365                                 // skip the brace and collect everything to the next matching
 366                                 // closing brace
 367                                 flags |= FLAG_BRACE_LAST;
 368                                 continue;
 369                         }
 370
 371                         // handle only this single token, leave the loop if done
 372                         flags |= FLAG_LEAVE;
 373                 }
 374
 375
 376                 if (flags & FLAG_BRACED) {
 377                         if (t.cat() == catSpace)
 378                                 continue;
 379
 380                         if (t.cat() != catBegin) {
 381                                 p.error("opening brace expected");
 382                                 return;
 383                         }
 384
 385                         // skip the brace and collect everything to the next matching
 386                         // closing brace
 387                         flags = FLAG_BRACE_LAST;
 388                 }
 389
 390
 391                 if (flags & FLAG_OPTION) {
 392                         if (t.cat() == catOther && t.character() == '[') {
 393                                 parse(p, os, FLAG_BRACK_LAST, mode);
 394                         } else {
 395                                 // no option found, put back token and we are done
 396                                 p.putback();
 397                         }
 398                         return;
 399                 }
 400
 401                 //
 402                 // cat codes
 403                 //
 404                 if (t.cat() == catMath) {
 405                         if (mode == TEXT_MODE || mode == MATHTEXT_MODE) {
 406                                 // we are inside some text mode thingy, so opening new math is allowed
 407                                 if (mode == TEXT_MODE)
 408                                         begin_inset(os, "Formula ");
 409                                 Token const & n = p.getToken();
 410                                 if (n.cat() == catMath) {
 411                                         // TeX's $$...$$ syntax for displayed math
 412                                         os << "\\[";
 413                                         parse(p, os, FLAG_SIMPLE, MATH_MODE);
 414                                         os << "\\]";
 415                                         p.getToken(); // skip the second '$' token
 416                                 } else {
 417                                         // simple $...$  stuff
 418                                         p.putback();
 419                                         os << '$';
 420                                         parse(p, os, FLAG_SIMPLE, MATH_MODE);
 421                                         os << '$';
 422                                 }
 423                                 if (mode == TEXT_MODE)
 424                                         end_inset(os);
 425                         }
 426
 427                         else if (flags & FLAG_SIMPLE) {
 428                                 // this is the end of the formula
 429                                 return;
 430                         }
 431
 432                         else {
 433                                 cerr << "mode: " << mode << endl;
 434                                 p.error("something strange in the parser\n");
 435                                 break;
 436                         }
 437                 }
 438
 439                 else if (t.cat() == catLetter)
 440                         os << t.character();
 441
 442                 else if (t.cat() == catSpace)
 443                         os << t.character();
 444
 445                 else if (t.cat() == catNewline)
 446                         os << ' ';
 447
 448                 else if (t.cat() == catSuper)
 449                         os << t.character();
 450
 451                 else if (t.cat() == catSub)
 452                         os << t.character();
 453
 454                 else if (t.cat() == catParameter) {
 455                         Token const & n = p.getToken();
 456                         os << wrap("macroarg", string(1, n.character()));
 457                 }
 458
 459                 else if (t.cat() == catActive) {
 460                         if (t.character() == '~')
 461                                 os << (curr_env() == "lyxcode" ? ' ' : '~');
 462                         else
 463                                 os << t.asInput();
 464                 }
 465
 466                 else if (t.cat() == catBegin) {
 467                         if (mode == MATH_MODE)
 468                                 os << '{';
 469                         else
 470                                 handle_ert(os, "{");
 471                 }
 472
 473                 else if (t.cat() == catEnd) {
 474                         if (flags & FLAG_BRACE_LAST)
 475                                 return;
 476                         if (mode == MATH_MODE)
 477                                 os << '}';
 478                         else
 479                                 handle_ert(os, "}");
 480                 }
 481
 482                 else if (t.cat() == catAlign) {
 483                         if (mode == MATH_MODE)
 484                                 os << t.character();
 485                         else
 486                                 os << TAB;
 487                 }
 488
 489                 else if (t.cs() == "tabularnewline") {
 490                         if (mode == MATH_MODE)
 491                                 os << t.asInput();
 492                         else
 493                                 os << LINE;
 494                 }
 495
 496                 else if (t.character() == ']' && (flags & FLAG_BRACK_LAST)) {
 497                         //cerr << "finished reading option\n";
 498                         return;
 499                 }
 500
 501                 else if (t.cat() == catOther)
 502                         os << string(1, t.character());
 503
 504                 else if (t.cat() == catComment) {
 505                         string s;
 506                         while (p.good()) {
 507                                 Token const & t = p.getToken();
 508                                 if (t.cat() == catNewline)
 509                                         break;
 510                                 s += t.asString();
 511                         }
 512                         //os << wrap("comment", s);
 513                         p.skipSpaces();
 514                 }
 515
 516                 //
 517                 // control sequences
 518                 //
 519
 520                 else if (t.cs() == "lyxlock")
 521                         ; // ignored
 522
 523                 else if (t.cs() == "newcommand" || t.cs() == "providecommand") {
 524                         string const name = p.verbatimItem();
 525                         string const opts = p.getArg('[', ']');
 526                         string const body = p.verbatimItem();
 527                         // only non-lyxspecific stuff
 528                         if (name != "\\noun " && name != "\\tabularnewline ") {
 529                                 ostream & out = in_preamble ? h_preamble : os;
 530                                 if (!in_preamble)
 531                                         begin_inset(os, "FormulaMacro\n");
 532                                 out << "\\" << t.cs() << "{" << name << "}";
 533                                 if (opts.size())
 534                                         out << "[" << opts << "]";
 535                                 out << "{" << body << "}";
 536                                 if (!in_preamble)
 537                                         end_inset(os);
 538                         }
 539                 }
 540
 541                 else if (t.cs() == "(") {
 542                         begin_inset(os, "Formula");
 543                         os << " \\(";
 544                         parse(p, os, FLAG_SIMPLE2, MATH_MODE);
 545                         os << "\\)";
 546                         end_inset(os);
 547                 }
 548
 549                 else if (t.cs() == "[") {
 550                         begin_inset(os, "Formula");
 551                         os << " \\[";
 552                         parse(p, os, FLAG_EQUATION, MATH_MODE);
 553                         os << "\\]";
 554                         end_inset(os);
 555                 }
 556
 557                 else if (t.cs() == "protect")
 558                         // ignore \\protect, will hopefully be re-added during output
 559                         ;
 560
 561                 else if (t.cs() == "begin") {
 562                         string const name = p.getArg('{', '}');
 563                         active_environments.push(name);
 564                         if (name == "document") {
 565                                 end_preamble(os);
 566                                 parse(p, os, FLAG_END, mode);
 567                         } else if (name == "abstract") {
 568                                 handle_par(os);
 569                                 parse(p, os, FLAG_END, mode);
 570                         } else if (is_math_env(name)) {
 571                                 begin_inset(os, "Formula ");
 572                                 os << "\\begin{" << name << "}";
 573                                 parse(p, os, FLAG_END, MATH_MODE);
 574                                 os << "\\end{" << name << "}";
 575                                 end_inset(os);
 576                         } else if (name == "tabular") {
 577                                 begin_inset(os, "Tabular \n");
 578                                 string colopts = p.verbatimItem();
 579                                 vector<string> colalign = extract_col_align(colopts);
 580                                 ostringstream ss;
 581                                 parse(p, ss, FLAG_END, mode);
 582                                 vector<string> lines;
 583                                 split(ss.str(), lines, LINE);
 584                                 const size_t cols = colalign.size();
 585                                 const size_t rows = lines.size();
 586                                 os << "<lyxtabular version=\"3\" rows=\"" << rows
 587                                    << "\" columns=\"" << cols << "\">\n"
 588                                    << "<features>\n";
 589                                 for (size_t c = 0; c < cols; ++c)
 590                                         os << "<column alignment=\"" << colalign[c] << "\""
 591                                            << " valignment=\"top\""
 592                                            << " width=\"0pt\""
 593                                            << ">\n";
 594                                 for (size_t r = 0; r < rows; ++r) {
 595                                         vector<string> cells;
 596                                         split(lines[r], cells, TAB);
 597                                         while (cells.size() < cols)
 598                                                 cells.push_back(string());
 599                                         //os << "<row bottomline=\"true\">\n";
 600                                         os << "<row>\n";
 601                                         for (size_t c = 0; c < cols; ++c) {
 602                                                 os << "<cell alignment=\"center\""
 603                                                    << " valignment=\"top\""
 604                                                    << " topline=\"true\""
 605                                                    << " leftline=\"true\""
 606                                                    << " usebox=\"none\""
 607                                                    << ">";
 608                                                 begin_inset(os, "Text");
 609                                                 os << "\n\n\\layout Standard\n\n";
 610                                                 os << cells[c];
 611                                                 end_inset(os);
 612                                                 os << "</cell>\n";
 613                                         }
 614                                         os << "</row>\n";
 615                                 }
 616                                 os << "</lyxtabular>\n";
 617                                 end_inset(os);
 618                         } else if (name == "table") {
 619                                 begin_inset(os, "Float table\n");
 620                                 os << "wide false\n"
 621                                    << "collapsed false\n"
 622                                    << "\n"
 623                                    << "\\layout Standard\n";
 624                                 parse(p, os, FLAG_END, mode);
 625                                 end_inset(os);
 626                         } else if (name == "thebibliography") {
 627                                 p.verbatimItem(); // swallow next arg
 628                                 parse(p, os, FLAG_END, mode);
 629                                 os << "\n\\layout Standard\n\n";
 630                         } else if (mode == MATH_MODE) {
 631                                 os << "\\begin{" << name << "}";
 632                                 parse(p, os, FLAG_END, mode);
 633                                 os << "\\end{" << name << "}";
 634                         } else {
 635                                 parse(p, os, FLAG_END, mode);
 636                         }
 637                 }
 638
 639                 else if (t.cs() == "end") {
 640                         if (flags & FLAG_END) {
 641                                 // eat environment name
 642                                 string const name = p.getArg('{', '}');
 643                                 if (name != curr_env())
 644                                         p.error("\\end{" + name + "} does not match \\begin{"
 645                                                 + curr_env() + "}");
 646                                 active_environments.pop();
 647                                 return;
 648                         }
 649                         p.error("found 'end' unexpectedly");
 650                 }
 651
 652                 else if (t.cs() == "item")
 653                         handle_par(os);
 654
 655                 else if (t.cs() == ")") {
 656                         if (flags & FLAG_SIMPLE2)
 657                                 return;
 658                         p.error("found '\\)' unexpectedly");
 659                 }
 660
 661                 else if (t.cs() == "]") {
 662                         if (flags & FLAG_EQUATION)
 663                                 return;
 664                         p.error("found '\\]' unexpectedly");
 665                 }
 666
 667                 else if (t.cs() == "documentclass") {
 668                         vector<string> opts;
 669                         split(p.getArg('[', ']'), opts, ',');
 670                         handle_opt(opts, known_languages, h_language);
 671                         handle_opt(opts, known_fontsizes, h_paperfontsize);
 672                         h_quotes_language = h_language;
 673                         h_options = join(opts, ',');
 674                         h_textclass = p.getArg('{', '}');
 675                 }
 676
 677                 else if (t.cs() == "usepackage") {
 678                         string const options = p.getArg('[', ']');
 679                         string const name = p.getArg('{', '}');
 680                         if (options.empty() && name.find(',')) {
 681                                 vector<string> vecnames;
 682                                 split(name, vecnames, ',');
 683                                 vector<string>::const_iterator it  = vecnames.begin();
 684                                 vector<string>::const_iterator end = vecnames.end();
 685                                 for (; it != end; ++it)
 686                                         handle_package(trim(*it), string());
 687                         } else {
 688                                 handle_package(name, options);
 689                         }
 690                 }
 691
 692                 else if (t.cs() == "newenvironment") {
 693                         string const name = p.getArg('{', '}');
 694                         p.skipSpaces();
 695                         string const begin = p.verbatimItem();
 696                         p.skipSpaces();
 697                         string const end = p.verbatimItem();
 698                         // ignore out mess
 699                         if (name != "lyxcode")
 700                                 os << wrap("newenvironment", begin + end);
 701                 }
 702
 703                 else if (t.cs() == "def") {
 704                         string name = p.getToken().cs();
 705                         while (p.nextToken().cat() != catBegin)
 706                                 name += p.getToken().asString();
 707                         handle_ert(os, "\\def\\" + name + '{' + p.verbatimItem() + '}');
 708                 }
 709
 710                 else if (t.cs() == "setcounter") {
 711                         string const name = p.getArg('{', '}');
 712                         string const content = p.getArg('{', '}');
 713                         if (name == "secnumdepth")
 714                                 h_secnumdepth = content;
 715                         else if (name == "tocdepth")
 716                                 h_tocdepth = content;
 717                         else
 718                                 h_preamble << "\\setcounter{" << name << "}{" << content << "}\n";
 719                 }
 720
 721                 else if (t.cs() == "setlength") {
 722                         string const name = p.getToken().cs();
 723                         string const content = p.getArg('{', '}');
 724                         if (name == "parskip")
 725                                 h_paragraph_separation = "skip";
 726                         else if (name == "parindent")
 727                                 h_paragraph_separation = "skip";
 728                         else
 729                                 h_preamble << "\\setlength{" << name << "}{" << content << "}\n";
 730                 }
 731
 732                 else if (t.cs() == "par")
 733                         handle_par(os);
 734
 735                 else if (is_heading(t.cs())) {
 736                         string name = t.cs();
 737                         if (p.nextToken().asInput() == "*") {
 738                                 p.getToken();
 739                                 name += "*";
 740                         }
 741                         os << "\\layout " << cap(name) << "\n\n";
 742                         parse(p, os, FLAG_ITEM, mode);
 743                 }
 744
 745                 else if (t.cs() == "makeindex" || t.cs() == "maketitle")
 746                         ; // swallow this
 747
 748                 else if (t.cs() == "tableofcontents")
 749                         p.verbatimItem(); // swallow this
 750
 751                 else if (t.cs() == "textrm") {
 752                         os << '\\' << t.cs() << '{';
 753                         parse(p, os, FLAG_ITEM, MATHTEXT_MODE);
 754                         os << '}';
 755                 }
 756
 757                 else if ((t.cs() == "emph" || t.cs() == "noun") && mode == TEXT_MODE) {
 758                         os << "\n\\" << t.cs() << " on\n";
 759                         parse(p, os, FLAG_ITEM, mode);
 760                         os << "\n\\" << t.cs() << " default\n";
 761                 }
 762
 763                 else if (is_latex_command(t.cs()) && mode == TEXT_MODE) {
 764                         begin_inset(os, "LatexCommand ");
 765                         os << '\\' << t.cs() << '{';
 766                         parse(p, os, FLAG_ITEM, TEXT_MODE);
 767                         os << '}';
 768                         end_inset(os);
 769                 }
 770
 771                 else if (t.cs() == "bibitem") {
 772                         os << "\n\\layout Bibliography\n\\bibitem ";
 773                         string opt = p.getArg('[',']');
 774                         if (opt.size())
 775                                 os << '[' << opt << ']';
 776                         os << '{' << p.getArg('{','}') << '}' << "\n\n";
 777                 }
 778
 779                 else if (t.cs() == "textasciitilde")
 780                         os << '~';
 781
 782                 else if (t.cs() == "_" && mode == TEXT_MODE)
 783                         os << '_';
 784
 785                 else if (t.cs() == "&" && mode == TEXT_MODE)
 786                         os << '&';
 787
 788                 else if (t.cs() == "pagestyle" && in_preamble)
 789                         h_paperpagestyle == p.getArg('{','}');
 790
 791                 else {
 792                         if (mode == MATH_MODE)
 793                                 os << t.asInput();
 794                         else if (in_preamble)
 795                                 h_preamble << t.asInput();
 796                         else {
 797                                 // heuristic: read up to next non-nested space
 798                                 /*
 799                                 string s = t.asInput();
 800                                 string z = p.verbatimItem();
 801                                 while (p.good() && z != " " && z.size()) {
 802                                         //cerr << "read: " << z << endl;
 803                                         s += z;
 804                                         z = p.verbatimItem();
 805                                 }
 806                                 cerr << "found ERT: " << s << endl;
 807                                 handle_ert(os, s + ' ');
 808                                 */
 809                                 handle_ert(os, t.asInput() + ' ');
 810                         }
 811                 }
 812
 813                 if (flags & FLAG_LEAVE) {
 814                         flags &= ~FLAG_LEAVE;
 815                         break;
 816                 }
 817         }
 818 }
 819
 820
 821
 822 } // anonymous namespace
 823
 824
 825 int main(int argc, char * argv[])
 826 {
 827         if (argc <= 1) {
 828                 cerr << "Usage: " << argv[0] << " <infile.tex>" << endl;
 829                 return 2;
 830         }
 831
 832         ifstream is(argv[1]);
 833         Parser p(is);
 834         parse(p, cout, 0, TEXT_MODE);
 835         cout << "\n\\the_end";
 836
 837         return 0;
 838 }
 839
 840 // }])