src/tex2lyx/text.C

   1 /** The .tex to .lyx converter
   2     \author André Pönitz (2003)
   3  */
   4
   5 // {[(
   6
   7 #include <config.h>
   8
   9 #include "tex2lyx.h"
  10 #include "context.h"
  11 #include "FloatList.h"
  12 #include "support/lstrings.h"
  13 #include "support/tostr.h"
  14
  15 #include <iostream>
  16 #include <map>
  17 #include <sstream>
  18 #include <vector>
  19
  20 using std::cerr;
  21 using std::endl;
  22 using std::map;
  23 using std::ostream;
  24 using std::ostringstream;
  25 using std::string;
  26 using std::vector;
  27
  28 using lyx::support::rtrim;
  29 using lyx::support::suffixIs;
  30
  31
  32 // thin wrapper around parse_text using a string
  33 string parse_text(Parser & p, unsigned flags, const bool outer,
  34                   Context & context)
  35 {
  36         ostringstream os;
  37         parse_text(p, os, flags, outer, context);
  38         return os.str();
  39 }
  40
  41 // parses a subdocument, usually useful in insets (whence the name)
  42 void parse_text_in_inset(Parser & p, ostream & os, unsigned flags, bool outer,
  43                 Context & context)
  44 {
  45         Context newcontext(true, context.textclass);
  46         parse_text(p, os, flags, outer, newcontext);
  47         newcontext.check_end_layout(os);
  48 }
  49
  50
  51 // parses a paragraph snippet, useful for example for \emph{...}
  52 void parse_text_snippet(Parser & p, ostream & os, unsigned flags, bool outer,
  53                 Context & context)
  54 {
  55         Context newcontext(false, context.textclass);
  56         parse_text(p, os, flags, outer, newcontext);
  57         // should not be needed
  58         newcontext.check_end_layout(os);
  59 }
  60
  61
  62 namespace {
  63
  64 char const * known_latex_commands[] = { "ref", "cite", "label", "index",
  65 "printindex", "pageref", "url", 0 };
  66
  67 // LaTeX names for quotes
  68 char const * known_quotes[] = { "glqq", "grqq", "quotedblbase",
  69 "textquotedblleft", "quotesinglbase", "guilsinglleft", "guilsinglright", 0};
  70
  71 // the same as known_quotes with .lyx names
  72 char const * known_coded_quotes[] = { "gld", "grd", "gld",
  73 "grd", "gls", "fls", "frd", 0};
  74
  75 char const * known_sizes[] = { "tiny", "scriptsize", "footnotesize",
  76 "small", "normalsize", "large", "Large", "LARGE", "huge", "Huge", 0};
  77
  78 char const * known_coded_sizes[] = { "tiny", "scriptsize", "footnotesize",
  79 "small", "normal", "large", "larger", "largest",  "huge", "giant", 0};
  80
  81 // splits "x=z, y=b" into a map
  82 map<string, string> split_map(string const & s)
  83 {
  84         map<string, string> res;
  85         vector<string> v;
  86         split(s, v);
  87         for (size_t i = 0; i < v.size(); ++i) {
  88                 size_t const pos   = v[i].find('=');
  89                 string const index = v[i].substr(0, pos);
  90                 string const value = v[i].substr(pos + 1, string::npos);
  91                 res[trim(index)] = trim(value);
  92         }
  93         return res;
  94 }
  95
  96
  97 void begin_inset(ostream & os, string const & name)
  98 {
  99         os << "\n\\begin_inset " << name;
 100 }
 101
 102
 103 void end_inset(ostream & os)
 104 {
 105         os << "\n\\end_inset \n\n";
 106 }
 107
 108
 109 void skip_braces(Parser & p)
 110 {
 111         if (p.next_token().cat() != catBegin)
 112                 return;
 113         p.get_token();
 114         if (p.next_token().cat() == catEnd) {
 115                 p.get_token();
 116                 return;
 117         }
 118         p.putback();
 119 }
 120
 121
 122 void handle_ert(ostream & os, string const & s, Context const & context)
 123 {
 124         Context newcontext(true, context.textclass);
 125         begin_inset(os, "ERT");
 126         os << "\nstatus Collapsed\n";
 127         newcontext.check_layout(os);
 128         for (string::const_iterator it = s.begin(), et = s.end(); it != et; ++it) {
 129                 if (*it == '\\')
 130                         os << "\n\\backslash \n";
 131                 else
 132                         os << *it;
 133         }
 134         newcontext.check_end_layout(os);
 135         end_inset(os);
 136 }
 137
 138
 139 struct isLayout {
 140         isLayout(string const name) : name_(name) {}
 141         bool operator()(LyXLayout_ptr const & ptr) {
 142                 return ptr.get() && ptr->latexname() == name_;
 143         }
 144 private:
 145         string const name_;
 146 };
 147
 148
 149 LyXLayout_ptr findLayout(LyXTextClass const & textclass,
 150                          string const & name)
 151 {
 152         LyXTextClass::const_iterator it  = textclass.begin();
 153         LyXTextClass::const_iterator end = textclass.end();
 154         it = std::find_if(it, end, isLayout(name));
 155         return (it == end) ? LyXLayout_ptr() : *it;
 156 }
 157
 158
 159 void output_command_layout(ostream & os, Parser & p, bool outer,
 160                            Context & parent_context,
 161                            LyXLayout_ptr newlayout)
 162 {
 163 //      parent_context.dump(os, "#parent_context before output_command_layout");
 164         parent_context.check_end_layout(os);
 165         Context context(true, parent_context.textclass, newlayout,
 166                         parent_context.layout);
 167         context.check_layout(os);
 168         if (context.layout->optionalargs > 0) {
 169                 string s;
 170                 if (p.next_token().character() == '[') {
 171                         p.get_token(); // eat '['
 172                         begin_inset(os, "OptArg\n");
 173                         os << "collapsed true\n";
 174                         parse_text_in_inset(p, os, FLAG_BRACK_LAST, outer, context);
 175                         end_inset(os);
 176                 }
 177         }
 178         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
 179         context.check_end_layout(os);
 180 //      context.dump(os, "#context after output_command_layout");
 181 //      parent_context.dump(os, "#parent_context after output_command_layout");
 182 }
 183
 184
 185 void parse_environment(Parser & p, ostream & os, bool outer,
 186                        Context & parent_context)
 187 {
 188 //      parent_context.dump(os, "#parent_context before parse_environment");
 189         LyXLayout_ptr newlayout;
 190         string const name = p.getArg('{', '}');
 191         const bool is_starred = suffixIs(name, '*');
 192         string const unstarred_name = rtrim(name, "*");
 193         active_environments.push_back(name);
 194         if (is_math_env(name)) {
 195                 parent_context.check_layout(os);
 196                 begin_inset(os, "Formula ");
 197                 os << "\\begin{" << name << "}";
 198                 parse_math(p, os, FLAG_END, MATH_MODE);
 199                 os << "\\end{" << name << "}";
 200                 end_inset(os);
 201         } else if (name == "tabular") {
 202                 parent_context.check_layout(os);
 203                 begin_inset(os, "Tabular ");
 204                 handle_tabular(p, os, parent_context);
 205                 end_inset(os);
 206         } else if (parent_context.textclass.floats().typeExist(unstarred_name)) {
 207                 parent_context.check_layout(os);
 208                 begin_inset(os, "Float " + unstarred_name + "\n");
 209                 if (p.next_token().asInput() == "[") {
 210                         os << "placement " << p.getArg('[', ']') << '\n';
 211                 }
 212                 os << "wide " << tostr(is_starred)
 213                    << "\ncollapsed false\n";
 214                 parse_text_in_inset(p, os, FLAG_END, outer, parent_context);
 215                         end_inset(os);
 216         } else if (name == "center") {
 217                 parse_text(p, os, FLAG_END, outer, parent_context);
 218                 // The single '=' is meant here.
 219         } else if ((newlayout = findLayout(parent_context.textclass, name)).get() &&
 220                    newlayout->isEnvironment()) {
 221                 Context context(true, parent_context.textclass, newlayout,
 222                                 parent_context.layout);
 223                 parent_context.check_end_layout(os);
 224 //              context.dump(os, "#context in parse_environment");
 225                 switch (context.layout->latextype) {
 226                 case  LATEX_LIST_ENVIRONMENT:
 227                         context.extra_stuff = "\\labelwidthstring "
 228                                 + p.verbatim_item() + '\n';
 229                         break;
 230                 case  LATEX_BIB_ENVIRONMENT:
 231                         p.verbatim_item(); // swallow next arg
 232                         break;
 233                 default:
 234                         break;
 235                 }
 236                 //context.check_layout(os);
 237                 parse_text(p, os, FLAG_END, outer, context);
 238 //              context.dump(os, "#context after parse_environment");
 239                 context.check_end_layout(os);
 240         } else {
 241                 parent_context.check_layout(os);
 242                 handle_ert(os, "\\begin{" + name + "}", parent_context);
 243                 parse_text_snippet(p, os, FLAG_END, outer, parent_context);
 244                 handle_ert(os, "\\end{" + name + "}", parent_context);
 245         }
 246 }
 247
 248 } // anonymous namespace
 249
 250
 251
 252
 253 void parse_text(Parser & p, ostream & os, unsigned flags, bool outer,
 254                 Context & context)
 255 {
 256         LyXLayout_ptr newlayout;
 257         while (p.good()) {
 258                 Token const & t = p.get_token();
 259
 260 #ifdef FILEDEBUG
 261                 cerr << "t: " << t << " flags: " << flags << "\n";
 262 #endif
 263
 264                 if (flags & FLAG_ITEM) {
 265                         if (t.cat() == catSpace)
 266                                 continue;
 267
 268                         flags &= ~FLAG_ITEM;
 269                         if (t.cat() == catBegin) {
 270                                 // skip the brace and collect everything to the next matching
 271                                 // closing brace
 272                                 flags |= FLAG_BRACE_LAST;
 273                                 continue;
 274                         }
 275
 276                         // handle only this single token, leave the loop if done
 277                         flags |= FLAG_LEAVE;
 278                 }
 279
 280                 if (t.character() == ']' && (flags & FLAG_BRACK_LAST))
 281                         return;
 282
 283                 //
 284                 // cat codes
 285                 //
 286                 if (t.cat() == catMath) {
 287                         // we are inside some text mode thingy, so opening new math is allowed
 288                         context.check_layout(os);
 289                         begin_inset(os, "Formula ");
 290                         Token const & n = p.get_token();
 291                         if (n.cat() == catMath && outer) {
 292                                 // TeX's $$...$$ syntax for displayed math
 293                                 os << "\\[";
 294                                 parse_math(p, os, FLAG_SIMPLE, MATH_MODE);
 295                                 os << "\\]";
 296                                 p.get_token(); // skip the second '$' token
 297                         } else {
 298                                 // simple $...$  stuff
 299                                 p.putback();
 300                                 os << '$';
 301                                 parse_math(p, os, FLAG_SIMPLE, MATH_MODE);
 302                                 os << '$';
 303                         }
 304                         end_inset(os);
 305                 }
 306
 307                 else if (t.cat() == catSuper || t.cat() == catSub)
 308                         cerr << "catcode " << t << " illegal in text mode\n";
 309
 310                 // Basic support for english quotes. This should be
 311                 // extended to other quotes, but is not so easy (a
 312                 // left english quote is the same as a right german
 313                 // quote...)
 314                 else if (t.asInput() == "`"
 315                          && p.next_token().asInput() == "`") {
 316                         context.check_layout(os);
 317                         begin_inset(os, "Quotes ");
 318                         os << "eld";
 319                         end_inset(os);
 320                         p.get_token();
 321                         skip_braces(p);
 322                 }
 323                 else if (t.asInput() == "'"
 324                          && p.next_token().asInput() == "'") {
 325                         context.check_layout(os);
 326                         begin_inset(os, "Quotes ");
 327                         os << "erd";
 328                         end_inset(os);
 329                         p.get_token();
 330                         skip_braces(p);
 331                 }
 332
 333
 334                 else if (t.cat() == catLetter ||
 335                                t.cat() == catSpace ||
 336                                t.cat() == catOther ||
 337                                t.cat() == catAlign ||
 338                                t.cat() == catParameter) {
 339                         context.check_layout(os);
 340                         os << t.character();
 341                 }
 342
 343                 else if (t.cat() == catNewline) {
 344                         if (p.next_token().cat() == catNewline) {
 345                                 p.get_token();
 346                                 context.need_layout = true;
 347                                 // this should be done by the parser already
 348                                 cerr << "what are we doing here?" << endl;
 349                         } else {
 350                                 os << " "; // note the space
 351                         }
 352                 }
 353
 354                 else if (t.cat() == catActive) {
 355                         context.check_layout(os);
 356                         if (t.character() == '~') {
 357                                 if (context.layout->free_spacing)
 358                                         os << ' ';
 359                                 else
 360                                         os << "\\InsetSpace ~\n";
 361                         } else
 362                                 os << t.character();
 363                 }
 364
 365                 else if (t.cat() == catBegin) {
 366 // FIXME???
 367                         // special handling of size changes
 368                         context.check_layout(os);
 369                         bool const is_size = is_known(p.next_token().cs(), known_sizes);
 370                         Context newcontext(false, context.textclass);
 371 //                      need_end_layout = false;
 372                         string const s = parse_text(p, FLAG_BRACE_LAST, outer, newcontext);
 373 //                      need_end_layout = true;
 374                         if (s.empty() && p.next_token().character() == '`')
 375                                 ; // ignore it in  {}``
 376                         else if (is_size || s == "[" || s == "]" || s == "*")
 377                                 os << s;
 378                         else {
 379                                 handle_ert(os, "{", context);
 380                                 os << s;
 381                                 handle_ert(os, "}", context);
 382                         }
 383                 }
 384
 385                 else if (t.cat() == catEnd) {
 386                         if (flags & FLAG_BRACE_LAST) {
 387                                 context.check_end_layout(os);
 388                                 return;
 389                         }
 390                         cerr << "stray '}' in text\n";
 391                         handle_ert(os, "}", context);
 392                 }
 393
 394                 else if (t.cat() == catComment)
 395                         handle_comment(p);
 396
 397                 //
 398                 // control sequences
 399                 //
 400
 401                 else if (t.cs() == "(") {
 402                         context.check_layout(os);
 403                         begin_inset(os, "Formula");
 404                         os << " \\(";
 405                         parse_math(p, os, FLAG_SIMPLE2, MATH_MODE);
 406                         os << "\\)";
 407                         end_inset(os);
 408                 }
 409
 410                 else if (t.cs() == "[") {
 411                         context.check_layout(os);
 412                         begin_inset(os, "Formula");
 413                         os << " \\[";
 414                         parse_math(p, os, FLAG_EQUATION, MATH_MODE);
 415                         os << "\\]";
 416                         end_inset(os);
 417                 }
 418
 419                 else if (t.cs() == "begin")
 420                         parse_environment(p, os, outer, context);
 421
 422                 else if (t.cs() == "end") {
 423                         if (flags & FLAG_END) {
 424                                 // eat environment name
 425                                 string const name = p.getArg('{', '}');
 426                                 if (name != active_environment())
 427                                         cerr << "\\end{" + name + "} does not match \\begin{"
 428                                                 + active_environment() + "}\n";
 429                                 active_environments.pop_back();
 430                                 context.check_end_layout(os);
 431                                 return;
 432                         }
 433                         p.error("found 'end' unexpectedly");
 434                 }
 435
 436                 else if (t.cs() == "item") {
 437                         // should be done automatically by Parser::tokenize
 438                         //p.skip_spaces();
 439                         string s;
 440                         if (p.next_token().character() == '[') {
 441                                 p.get_token(); // eat '['
 442                                 Context newcontext(false, context.textclass);
 443                                 s = parse_text(p, FLAG_BRACK_LAST, outer, newcontext);
 444                         }
 445                         context.need_layout = true;
 446                         context.check_layout(os);
 447                         if (s.size())
 448                                 os << s << ' ';
 449                 }
 450
 451                 else if (t.cs() == "def") {
 452                         string name = p.get_token().cs();
 453                         while (p.next_token().cat() != catBegin)
 454                                 name += p.get_token().asString();
 455                         handle_ert(os, "\\def\\" + name + '{' + p.verbatim_item() + '}', context);
 456                 }
 457
 458                 else if (t.cs() == "par") {
 459                         p.skip_spaces();
 460                         context.check_end_layout(os);
 461                         context.need_layout = true;
 462 //                      if (p.next_token().cs() != "\\begin")
 463 //                              handle_par(os);
 464                         //cerr << "next token: '" << p.next_token().cs() << "'\n";
 465                 }
 466
 467                 // Must attempt to parse "Section*" before "Section".
 468                 else if ((p.next_token().asInput() == "*") &&
 469                          // The single '=' is meant here.
 470                          (newlayout = findLayout(context.textclass,
 471                                                  t.cs() + '*')).get() &&
 472                          newlayout->isCommand()) {
 473                         p.get_token();
 474                         output_command_layout(os, p, outer, context, newlayout);
 475                 }
 476
 477                 // The single '=' is meant here.
 478                 else if ((newlayout = findLayout(context.textclass, t.cs())).get() &&
 479                          newlayout->isCommand()) {
 480                         output_command_layout(os, p, outer, context, newlayout);
 481                 }
 482
 483                 else if (t.cs() == "includegraphics") {
 484                         map<string, string> opts = split_map(p.getArg('[', ']'));
 485                         string name = p.verbatim_item();
 486
 487                         context.check_layout(os);
 488                         begin_inset(os, "Graphics ");
 489                         os << "\n\tfilename " << name << '\n';
 490                         if (opts.find("width") != opts.end())
 491                                 os << "\twidth " << opts["width"] << '\n';
 492                         if (opts.find("height") != opts.end())
 493                                 os << "\theight " << opts["height"] << '\n';
 494                         end_inset(os);
 495                 }
 496
 497                 else if (t.cs() == "footnote") {
 498                         context.check_layout(os);
 499                         begin_inset(os, "Foot\n");
 500                         os << "collapsed true\n";
 501                         parse_text_in_inset(p, os, FLAG_ITEM, false, context);
 502                         end_inset(os);
 503                 }
 504
 505                 else if (t.cs() == "marginpar") {
 506                         context.check_layout(os);
 507                         begin_inset(os, "Marginal\n");
 508                         os << "collapsed true\n";
 509                         parse_text_in_inset(p, os, FLAG_ITEM, false, context);
 510                         end_inset(os);
 511                 }
 512
 513                 else if (t.cs() == "ensuremath") {
 514                         context.check_layout(os);
 515                         Context newcontext(false, context.textclass);
 516                         string s = parse_text(p, FLAG_ITEM, false, newcontext);
 517                         if (s == "±" || s == "³" || s == "²" || s == "µ")
 518                                 os << s;
 519                         else
 520                                 handle_ert(os, "\\ensuremath{" + s + "}",
 521                                            context);
 522                 }
 523
 524                 else if (t.cs() == "hfill") {
 525                         context.check_layout(os);
 526                         os << "\n\\hfill\n";
 527                         skip_braces(p);
 528                 }
 529
 530                 else if (t.cs() == "makeindex" || t.cs() == "maketitle")
 531                         skip_braces(p); // swallow this
 532
 533                 else if (t.cs() == "tableofcontents") {
 534                         context.check_layout(os);
 535                         begin_inset(os, "LatexCommand ");
 536                         os << '\\' << t.cs() << "{}\n";
 537                         end_inset(os);
 538                         skip_braces(p); // swallow this
 539                 }
 540
 541
 542                 else if (t.cs() == "textrm") {
 543                         context.check_layout(os);
 544                         os << "\n\\family roman \n";
 545                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
 546                         os << "\n\\family default \n";
 547                 }
 548
 549                 else if (t.cs() == "textsf") {
 550                         context.check_layout(os);
 551                         os << "\n\\family sans \n";
 552                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
 553                         os << "\n\\family default \n";
 554                 }
 555
 556                 else if (t.cs() == "texttt") {
 557                         context.check_layout(os);
 558                         os << "\n\\family typewriter \n";
 559                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
 560                         os << "\n\\family default \n";
 561                 }
 562
 563                 else if (t.cs() == "textit") {
 564                         context.check_layout(os);
 565                         os << "\n\\shape italic \n";
 566                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
 567                         os << "\n\\shape default \n";
 568                 }
 569
 570                 else if (t.cs() == "textsc") {
 571                         context.check_layout(os);
 572                         os << "\n\\noun on \n";
 573                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
 574                         os << "\n\\noun default \n";
 575                 }
 576
 577                 else if (t.cs() == "textbf") {
 578                         context.check_layout(os);
 579                         os << "\n\\series bold \n";
 580                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
 581                         os << "\n\\series default \n";
 582                 }
 583
 584                 else if (t.cs() == "underbar") {
 585                         context.check_layout(os);
 586                         os << "\n\\bar under \n";
 587                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
 588                         os << "\n\\bar default \n";
 589                 }
 590
 591                 else if (t.cs() == "emph" || t.cs() == "noun") {
 592                         context.check_layout(os);
 593                         os << "\n\\" << t.cs() << " on \n";
 594                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
 595                         os << "\n\\" << t.cs() << " default \n";
 596                 }
 597
 598                 else if (t.cs() == "bibitem") {
 599                         context.check_layout(os);
 600                         os << "\\bibitem ";
 601                         os << p.getOpt();
 602                         os << '{' << p.verbatim_item() << '}' << "\n";
 603                 }
 604
 605                 else if (is_known(t.cs(), known_latex_commands)) {
 606                         context.check_layout(os);
 607                         begin_inset(os, "LatexCommand ");
 608                         os << '\\' << t.cs();
 609                         os << p.getOpt();
 610                         os << p.getOpt();
 611                         os << '{' << p.verbatim_item() << "}\n";
 612                         end_inset(os);
 613                 }
 614
 615                 else if (is_known(t.cs(), known_quotes)) {
 616                   char const ** where = is_known(t.cs(), known_quotes);
 617                         begin_inset(os, "Quotes ");
 618                         os << known_coded_quotes[where - known_quotes];
 619                         end_inset(os);
 620                         skip_braces(p);
 621                 }
 622
 623                 else if (is_known(t.cs(), known_sizes)) {
 624                         char const ** where = is_known(t.cs(), known_sizes);
 625                         context.check_layout(os);
 626                         os << "\n\\size " << known_coded_sizes[where - known_sizes] << "\n";
 627                 }
 628
 629                 else if (t.cs() == "LyX" || t.cs() == "TeX"
 630                          || t.cs() == "LaTeX") {
 631                         context.check_layout(os);
 632                         os << t.cs();
 633                         skip_braces(p); // eat {}
 634                 }
 635
 636                 else if (t.cs() == "LaTeXe") {
 637                         context.check_layout(os);
 638                         os << "LaTeX2e";
 639                         skip_braces(p); // eat {}
 640                 }
 641
 642                 else if (t.cs() == "ldots") {
 643                         context.check_layout(os);
 644                         skip_braces(p);
 645                         os << "\\SpecialChar \\ldots{}\n";
 646                 }
 647
 648                 else if (t.cs() == "lyxarrow") {
 649                         context.check_layout(os);
 650                         os << "\\SpecialChar \\menuseparator\n";
 651                         skip_braces(p);
 652                 }
 653
 654                 else if (t.cs() == "ldots") {
 655                         context.check_layout(os);
 656                         os << "\\SpecialChar \\ldots{}\n";
 657                         skip_braces(p);
 658                 }
 659
 660                 else if (t.cs() == "@" && p.next_token().asInput() == ".") {
 661                         context.check_layout(os);
 662                         os << "\\SpecialChar \\@.\n";
 663                         p.get_token();
 664                 }
 665
 666                 else if (t.cs() == "-") {
 667                         context.check_layout(os);
 668                         os << "\\SpecialChar \\-\n";
 669                 }
 670
 671                 else if (t.cs() == "textasciitilde") {
 672                         context.check_layout(os);
 673                         os << '~';
 674                         skip_braces(p);
 675                 }
 676
 677                 else if (t.cs() == "textasciicircum") {
 678                         context.check_layout(os);
 679                         os << '^';
 680                         skip_braces(p);
 681                 }
 682
 683                 else if (t.cs() == "textbackslash") {
 684                         context.check_layout(os);
 685                         os << "\n\\backslash \n";
 686                         skip_braces(p);
 687                 }
 688
 689                 else if (t.cs() == "_" || t.cs() == "&" || t.cs() == "#"
 690                             || t.cs() == "$" || t.cs() == "{" || t.cs() == "}"
 691                             || t.cs() == "%") {
 692                         context.check_layout(os);
 693                         os << t.cs();
 694                 }
 695
 696                 else if (t.cs() == "char") {
 697                         context.check_layout(os);
 698                         if (p.next_token().character() == '`') {
 699                                 p.get_token();
 700                                 if (p.next_token().cs() == "\"") {
 701                                         p.get_token();
 702                                         os << '"';
 703                                         skip_braces(p);
 704                                 } else {
 705                                         handle_ert(os, "\\char`", context);
 706                                 }
 707                         } else {
 708                                 handle_ert(os, "\\char", context);
 709                         }
 710                 }
 711
 712                 else if (t.cs() == "\"") {
 713                         context.check_layout(os);
 714                         string const name = p.verbatim_item();
 715                              if (name == "a") os << 'ä';
 716                         else if (name == "o") os << 'ö';
 717                         else if (name == "u") os << 'ü';
 718                         else if (name == "A") os << 'Ä';
 719                         else if (name == "O") os << 'Ö';
 720                         else if (name == "U") os << 'Ü';
 721                         else handle_ert(os, "\"{" + name + "}", context);
 722                 }
 723
 724                 else if (t.cs() == "=" || t.cs() == "H" || t.cs() == "c"
 725                       || t.cs() == "^" || t.cs() == "'" || t.cs() == "~") {
 726                         // we need the trim as the LyX parser chokes on such spaces
 727                         context.check_layout(os);
 728                         os << "\n\\i \\" << t.cs() << "{"
 729                            << trim(parse_text(p, FLAG_ITEM, outer, context), " ") << "}\n";
 730                 }
 731
 732                 else if (t.cs() == "ss") {
 733                         context.check_layout(os);
 734                         os << "ß";
 735                 }
 736
 737                 else if (t.cs() == "i" || t.cs() == "j") {
 738                         context.check_layout(os);
 739                         os << "\\" << t.cs() << ' ';
 740                 }
 741
 742                 else if (t.cs() == "\\") {
 743                         context.check_layout(os);
 744                         os << "\n\\newline \n";
 745                 }
 746
 747                 else if (t.cs() == "input") {
 748                         context.check_layout(os);
 749                         handle_ert(os, "\\input{" + p.verbatim_item() + "}\n",
 750                                    context);
 751                 }
 752                 else if (t.cs() == "fancyhead") {
 753                         context.check_layout(os);
 754                         ostringstream ss;
 755                         ss << "\\fancyhead";
 756                         ss << p.getOpt();
 757                         ss << '{' << p.verbatim_item() << "}\n";
 758                         handle_ert(os, ss.str(), context);
 759                 }
 760
 761                 else {
 762                         //cerr << "#: " << t << " mode: " << mode << endl;
 763                         // heuristic: read up to next non-nested space
 764                         /*
 765                         string s = t.asInput();
 766                         string z = p.verbatim_item();
 767                         while (p.good() && z != " " && z.size()) {
 768                                 //cerr << "read: " << z << endl;
 769                                 s += z;
 770                                 z = p.verbatim_item();
 771                         }
 772                         cerr << "found ERT: " << s << endl;
 773                         handle_ert(os, s + ' ', context);
 774                         */
 775                         context.check_layout(os);
 776                         handle_ert(os, t.asInput() + ' ', context);
 777                 }
 778
 779                 if (flags & FLAG_LEAVE) {
 780                         flags &= ~FLAG_LEAVE;
 781                         break;
 782                 }
 783         }
 784 }
 785
 786
 787 // }])