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.check_end_layout(os);
 164         Context context(true, parent_context.textclass, newlayout,
 165                         parent_context.layout);
 166         context.check_deeper(os);
 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.check_end_deeper(os);
 181 }
 182
 183
 184 void parse_environment(Parser & p, ostream & os, bool outer,
 185                        Context & parent_context)
 186 {
 187         LyXLayout_ptr newlayout;
 188         string const name = p.getArg('{', '}');
 189         const bool is_starred = suffixIs(name, '*');
 190         string const unstarred_name = rtrim(name, "*");
 191         active_environments.push_back(name);
 192         if (is_math_env(name)) {
 193                 parent_context.check_layout(os);
 194                 begin_inset(os, "Formula ");
 195                 os << "\\begin{" << name << "}";
 196                 parse_math(p, os, FLAG_END, MATH_MODE);
 197                 os << "\\end{" << name << "}";
 198                 end_inset(os);
 199         } else if (name == "tabular") {
 200                 parent_context.check_layout(os);
 201                 begin_inset(os, "Tabular ");
 202                 handle_tabular(p, os, parent_context);
 203                 end_inset(os);
 204         } else if (parent_context.textclass.floats().typeExist(unstarred_name)) {
 205                 parent_context.check_layout(os);
 206                 begin_inset(os, "Float " + unstarred_name + "\n");
 207                 if (p.next_token().asInput() == "[") {
 208                         os << "placement " << p.getArg('[', ']') << '\n';
 209                 }
 210                 os << "wide " << tostr(is_starred)
 211                    << "\ncollapsed false\n";
 212                 parse_text_in_inset(p, os, FLAG_END, outer, parent_context);
 213                         end_inset(os);
 214         } else if (name == "center") {
 215                 parse_text(p, os, FLAG_END, outer, parent_context);
 216                 // The single '=' is meant here.
 217         } else if ((newlayout = findLayout(parent_context.textclass, name)).get() &&
 218                    newlayout->isEnvironment()) {
 219                 Context context(true, parent_context.textclass, newlayout,
 220                                 parent_context.layout);
 221                 parent_context.check_end_layout(os);
 222                 switch (context.layout->latextype) {
 223                 case  LATEX_LIST_ENVIRONMENT:
 224                         context.extra_stuff = "\\labelwidthstring "
 225                                 + p.verbatim_item() + '\n';
 226                         break;
 227                 case  LATEX_BIB_ENVIRONMENT:
 228                         p.verbatim_item(); // swallow next arg
 229                         break;
 230                 default:
 231                         break;
 232                 }
 233                 context.check_deeper(os);
 234                 parse_text(p, os, FLAG_END, outer, context);
 235                 context.check_end_layout(os);
 236                 context.check_end_deeper(os);
 237         } else {
 238                 parent_context.check_layout(os);
 239                 handle_ert(os, "\\begin{" + name + "}", parent_context);
 240                 parse_text_snippet(p, os, FLAG_END, outer, parent_context);
 241                 handle_ert(os, "\\end{" + name + "}", parent_context);
 242         }
 243 }
 244
 245 } // anonymous namespace
 246
 247
 248
 249
 250 void parse_text(Parser & p, ostream & os, unsigned flags, bool outer,
 251                 Context & context)
 252 {
 253         LyXLayout_ptr newlayout;
 254         while (p.good()) {
 255                 Token const & t = p.get_token();
 256
 257 #ifdef FILEDEBUG
 258                 cerr << "t: " << t << " flags: " << flags << "\n";
 259 #endif
 260
 261                 if (flags & FLAG_ITEM) {
 262                         if (t.cat() == catSpace)
 263                                 continue;
 264
 265                         flags &= ~FLAG_ITEM;
 266                         if (t.cat() == catBegin) {
 267                                 // skip the brace and collect everything to the next matching
 268                                 // closing brace
 269                                 flags |= FLAG_BRACE_LAST;
 270                                 continue;
 271                         }
 272
 273                         // handle only this single token, leave the loop if done
 274                         flags |= FLAG_LEAVE;
 275                 }
 276
 277                 if (t.character() == ']' && (flags & FLAG_BRACK_LAST))
 278                         return;
 279
 280                 //
 281                 // cat codes
 282                 //
 283                 if (t.cat() == catMath) {
 284                         // we are inside some text mode thingy, so opening new math is allowed
 285                         context.check_layout(os);
 286                         begin_inset(os, "Formula ");
 287                         Token const & n = p.get_token();
 288                         if (n.cat() == catMath && outer) {
 289                                 // TeX's $$...$$ syntax for displayed math
 290                                 os << "\\[";
 291                                 parse_math(p, os, FLAG_SIMPLE, MATH_MODE);
 292                                 os << "\\]";
 293                                 p.get_token(); // skip the second '$' token
 294                         } else {
 295                                 // simple $...$  stuff
 296                                 p.putback();
 297                                 os << '$';
 298                                 parse_math(p, os, FLAG_SIMPLE, MATH_MODE);
 299                                 os << '$';
 300                         }
 301                         end_inset(os);
 302                 }
 303
 304                 else if (t.cat() == catSuper || t.cat() == catSub)
 305                         cerr << "catcode " << t << " illegal in text mode\n";
 306
 307                 // Basic support for english quotes. This should be
 308                 // extended to other quotes, but is not so easy (a
 309                 // left english quote is the same as a right german
 310                 // quote...)
 311                 else if (t.asInput() == "`"
 312                          && p.next_token().asInput() == "`") {
 313                         context.check_layout(os);
 314                         begin_inset(os, "Quotes ");
 315                         os << "eld";
 316                         end_inset(os);
 317                         p.get_token();
 318                         skip_braces(p);
 319                 }
 320                 else if (t.asInput() == "'"
 321                          && p.next_token().asInput() == "'") {
 322                         context.check_layout(os);
 323                         begin_inset(os, "Quotes ");
 324                         os << "erd";
 325                         end_inset(os);
 326                         p.get_token();
 327                         skip_braces(p);
 328                 }
 329
 330
 331                 else if (t.cat() == catLetter ||
 332                                t.cat() == catSpace ||
 333                                t.cat() == catOther ||
 334                                t.cat() == catAlign ||
 335                                t.cat() == catParameter) {
 336                         context.check_layout(os);
 337                         os << t.character();
 338                 }
 339
 340                 else if (t.cat() == catNewline) {
 341                         if (p.next_token().cat() == catNewline) {
 342                                 // this should have been be done by
 343                                 // the parser already
 344                                 cerr << "what are we doing here?" << endl;
 345                                 p.get_token();
 346                                 context.need_layout = true;
 347                         } else {
 348                                 os << " "; // note the space
 349                         }
 350                 }
 351
 352                 else if (t.cat() == catActive) {
 353                         context.check_layout(os);
 354                         if (t.character() == '~') {
 355                                 if (context.layout->free_spacing)
 356                                         os << ' ';
 357                                 else
 358                                         os << "\\InsetSpace ~\n";
 359                         } else
 360                                 os << t.character();
 361                 }
 362
 363                 else if (t.cat() == catBegin) {
 364 // FIXME???
 365                         // special handling of size changes
 366                         context.check_layout(os);
 367                         bool const is_size = is_known(p.next_token().cs(), known_sizes);
 368                         Context newcontext(false, context.textclass);
 369 //                      need_end_layout = false;
 370                         string const s = parse_text(p, FLAG_BRACE_LAST, outer, newcontext);
 371 //                      need_end_layout = true;
 372                         if (s.empty() && p.next_token().character() == '`')
 373                                 ; // ignore it in  {}``
 374                         else if (is_size || s == "[" || s == "]" || s == "*")
 375                                 os << s;
 376                         else {
 377                                 handle_ert(os, "{", context);
 378                                 os << s;
 379                                 handle_ert(os, "}", context);
 380                         }
 381                 }
 382
 383                 else if (t.cat() == catEnd) {
 384                         if (flags & FLAG_BRACE_LAST) {
 385                                 context.check_end_layout(os);
 386                                 return;
 387                         }
 388                         cerr << "stray '}' in text\n";
 389                         handle_ert(os, "}", context);
 390                 }
 391
 392                 else if (t.cat() == catComment)
 393                         handle_comment(p);
 394
 395                 //
 396                 // control sequences
 397                 //
 398
 399                 else if (t.cs() == "(") {
 400                         context.check_layout(os);
 401                         begin_inset(os, "Formula");
 402                         os << " \\(";
 403                         parse_math(p, os, FLAG_SIMPLE2, MATH_MODE);
 404                         os << "\\)";
 405                         end_inset(os);
 406                 }
 407
 408                 else if (t.cs() == "[") {
 409                         context.check_layout(os);
 410                         begin_inset(os, "Formula");
 411                         os << " \\[";
 412                         parse_math(p, os, FLAG_EQUATION, MATH_MODE);
 413                         os << "\\]";
 414                         end_inset(os);
 415                 }
 416
 417                 else if (t.cs() == "begin")
 418                         parse_environment(p, os, outer, context);
 419
 420                 else if (t.cs() == "end") {
 421                         if (flags & FLAG_END) {
 422                                 // eat environment name
 423                                 string const name = p.getArg('{', '}');
 424                                 if (name != active_environment())
 425                                         cerr << "\\end{" + name + "} does not match \\begin{"
 426                                                 + active_environment() + "}\n";
 427                                 active_environments.pop_back();
 428                                 return;
 429                         }
 430                         p.error("found 'end' unexpectedly");
 431                 }
 432
 433                 else if (t.cs() == "item") {
 434                         // should be done automatically by Parser::tokenize
 435                         //p.skip_spaces();
 436                         string s;
 437                         if (p.next_token().character() == '[') {
 438                                 p.get_token(); // eat '['
 439                                 Context newcontext(false, context.textclass);
 440                                 s = parse_text(p, FLAG_BRACK_LAST, outer, newcontext);
 441                         }
 442                         context.need_layout = true;
 443                         context.has_item = true;
 444                         context.check_layout(os);
 445                         if (s.size())
 446                                 os << s << ' ';
 447                 }
 448
 449                 else if (t.cs() == "bibitem") {
 450                         context.need_layout = true;
 451                         context.has_item = true;
 452                         context.check_layout(os);
 453                         os << "\\bibitem ";
 454                         os << p.getOpt();
 455                         os << '{' << p.verbatim_item() << '}' << "\n";
 456                 }
 457
 458                 else if (t.cs() == "def") {
 459                         string name = p.get_token().cs();
 460                         while (p.next_token().cat() != catBegin)
 461                                 name += p.get_token().asString();
 462                         handle_ert(os, "\\def\\" + name + '{' + p.verbatim_item() + '}', context);
 463                 }
 464
 465                 else if (t.cs() == "par") {
 466                         p.skip_spaces();
 467                         context.check_end_layout(os);
 468                         context.need_layout = true;
 469                 }
 470
 471                 // Must attempt to parse "Section*" before "Section".
 472                 else if ((p.next_token().asInput() == "*") &&
 473                          // The single '=' is meant here.
 474                          (newlayout = findLayout(context.textclass,
 475                                                  t.cs() + '*')).get() &&
 476                          newlayout->isCommand()) {
 477                         p.get_token();
 478                         output_command_layout(os, p, outer, context, newlayout);
 479                 }
 480
 481                 // The single '=' is meant here.
 482                 else if ((newlayout = findLayout(context.textclass, t.cs())).get() &&
 483                          newlayout->isCommand()) {
 484                         output_command_layout(os, p, outer, context, newlayout);
 485                 }
 486
 487                 else if (t.cs() == "includegraphics") {
 488                         map<string, string> opts = split_map(p.getArg('[', ']'));
 489                         string name = p.verbatim_item();
 490
 491                         context.check_layout(os);
 492                         begin_inset(os, "Graphics ");
 493                         os << "\n\tfilename " << name << '\n';
 494                         if (opts.find("width") != opts.end())
 495                                 os << "\twidth " << opts["width"] << '\n';
 496                         if (opts.find("height") != opts.end())
 497                                 os << "\theight " << opts["height"] << '\n';
 498                         end_inset(os);
 499                 }
 500
 501                 else if (t.cs() == "footnote") {
 502                         context.check_layout(os);
 503                         begin_inset(os, "Foot\n");
 504                         os << "collapsed true\n";
 505                         parse_text_in_inset(p, os, FLAG_ITEM, false, context);
 506                         end_inset(os);
 507                 }
 508
 509                 else if (t.cs() == "marginpar") {
 510                         context.check_layout(os);
 511                         begin_inset(os, "Marginal\n");
 512                         os << "collapsed true\n";
 513                         parse_text_in_inset(p, os, FLAG_ITEM, false, context);
 514                         end_inset(os);
 515                 }
 516
 517                 else if (t.cs() == "ensuremath") {
 518                         context.check_layout(os);
 519                         Context newcontext(false, context.textclass);
 520                         string s = parse_text(p, FLAG_ITEM, false, newcontext);
 521                         if (s == "±" || s == "³" || s == "²" || s == "µ")
 522                                 os << s;
 523                         else
 524                                 handle_ert(os, "\\ensuremath{" + s + "}",
 525                                            context);
 526                 }
 527
 528                 else if (t.cs() == "hfill") {
 529                         context.check_layout(os);
 530                         os << "\n\\hfill\n";
 531                         skip_braces(p);
 532                 }
 533
 534                 else if (t.cs() == "makeindex" || t.cs() == "maketitle")
 535                         skip_braces(p); // swallow this
 536
 537                 else if (t.cs() == "tableofcontents") {
 538                         context.check_layout(os);
 539                         begin_inset(os, "LatexCommand ");
 540                         os << '\\' << t.cs() << "{}\n";
 541                         end_inset(os);
 542                         skip_braces(p); // swallow this
 543                 }
 544
 545
 546                 else if (t.cs() == "textrm") {
 547                         context.check_layout(os);
 548                         os << "\n\\family roman \n";
 549                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
 550                         os << "\n\\family default \n";
 551                 }
 552
 553                 else if (t.cs() == "textsf") {
 554                         context.check_layout(os);
 555                         os << "\n\\family sans \n";
 556                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
 557                         os << "\n\\family default \n";
 558                 }
 559
 560                 else if (t.cs() == "texttt") {
 561                         context.check_layout(os);
 562                         os << "\n\\family typewriter \n";
 563                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
 564                         os << "\n\\family default \n";
 565                 }
 566
 567                 else if (t.cs() == "textit") {
 568                         context.check_layout(os);
 569                         os << "\n\\shape italic \n";
 570                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
 571                         os << "\n\\shape default \n";
 572                 }
 573
 574                 else if (t.cs() == "textsc") {
 575                         context.check_layout(os);
 576                         os << "\n\\noun on \n";
 577                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
 578                         os << "\n\\noun default \n";
 579                 }
 580
 581                 else if (t.cs() == "textbf") {
 582                         context.check_layout(os);
 583                         os << "\n\\series bold \n";
 584                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
 585                         os << "\n\\series default \n";
 586                 }
 587
 588                 else if (t.cs() == "underbar") {
 589                         context.check_layout(os);
 590                         os << "\n\\bar under \n";
 591                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
 592                         os << "\n\\bar default \n";
 593                 }
 594
 595                 else if (t.cs() == "emph" || t.cs() == "noun") {
 596                         context.check_layout(os);
 597                         os << "\n\\" << t.cs() << " on \n";
 598                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
 599                         os << "\n\\" << t.cs() << " default \n";
 600                 }
 601
 602                 else if (is_known(t.cs(), known_latex_commands)) {
 603                         context.check_layout(os);
 604                         begin_inset(os, "LatexCommand ");
 605                         os << '\\' << t.cs();
 606                         os << p.getOpt();
 607                         os << p.getOpt();
 608                         os << '{' << p.verbatim_item() << "}\n";
 609                         end_inset(os);
 610                 }
 611
 612                 else if (is_known(t.cs(), known_quotes)) {
 613                   char const ** where = is_known(t.cs(), known_quotes);
 614                         begin_inset(os, "Quotes ");
 615                         os << known_coded_quotes[where - known_quotes];
 616                         end_inset(os);
 617                         skip_braces(p);
 618                 }
 619
 620                 else if (is_known(t.cs(), known_sizes)) {
 621                         char const ** where = is_known(t.cs(), known_sizes);
 622                         context.check_layout(os);
 623                         os << "\n\\size " << known_coded_sizes[where - known_sizes] << "\n";
 624                 }
 625
 626                 else if (t.cs() == "LyX" || t.cs() == "TeX"
 627                          || t.cs() == "LaTeX") {
 628                         context.check_layout(os);
 629                         os << t.cs();
 630                         skip_braces(p); // eat {}
 631                 }
 632
 633                 else if (t.cs() == "LaTeXe") {
 634                         context.check_layout(os);
 635                         os << "LaTeX2e";
 636                         skip_braces(p); // eat {}
 637                 }
 638
 639                 else if (t.cs() == "ldots") {
 640                         context.check_layout(os);
 641                         skip_braces(p);
 642                         os << "\\SpecialChar \\ldots{}\n";
 643                 }
 644
 645                 else if (t.cs() == "lyxarrow") {
 646                         context.check_layout(os);
 647                         os << "\\SpecialChar \\menuseparator\n";
 648                         skip_braces(p);
 649                 }
 650
 651                 else if (t.cs() == "ldots") {
 652                         context.check_layout(os);
 653                         os << "\\SpecialChar \\ldots{}\n";
 654                         skip_braces(p);
 655                 }
 656
 657                 else if (t.cs() == "@" && p.next_token().asInput() == ".") {
 658                         context.check_layout(os);
 659                         os << "\\SpecialChar \\@.\n";
 660                         p.get_token();
 661                 }
 662
 663                 else if (t.cs() == "-") {
 664                         context.check_layout(os);
 665                         os << "\\SpecialChar \\-\n";
 666                 }
 667
 668                 else if (t.cs() == "textasciitilde") {
 669                         context.check_layout(os);
 670                         os << '~';
 671                         skip_braces(p);
 672                 }
 673
 674                 else if (t.cs() == "textasciicircum") {
 675                         context.check_layout(os);
 676                         os << '^';
 677                         skip_braces(p);
 678                 }
 679
 680                 else if (t.cs() == "textbackslash") {
 681                         context.check_layout(os);
 682                         os << "\n\\backslash \n";
 683                         skip_braces(p);
 684                 }
 685
 686                 else if (t.cs() == "_" || t.cs() == "&" || t.cs() == "#"
 687                             || t.cs() == "$" || t.cs() == "{" || t.cs() == "}"
 688                             || t.cs() == "%") {
 689                         context.check_layout(os);
 690                         os << t.cs();
 691                 }
 692
 693                 else if (t.cs() == "char") {
 694                         context.check_layout(os);
 695                         if (p.next_token().character() == '`') {
 696                                 p.get_token();
 697                                 if (p.next_token().cs() == "\"") {
 698                                         p.get_token();
 699                                         os << '"';
 700                                         skip_braces(p);
 701                                 } else {
 702                                         handle_ert(os, "\\char`", context);
 703                                 }
 704                         } else {
 705                                 handle_ert(os, "\\char", context);
 706                         }
 707                 }
 708
 709                 else if (t.cs() == "\"") {
 710                         context.check_layout(os);
 711                         string const name = p.verbatim_item();
 712                              if (name == "a") os << 'ä';
 713                         else if (name == "o") os << 'ö';
 714                         else if (name == "u") os << 'ü';
 715                         else if (name == "A") os << 'Ä';
 716                         else if (name == "O") os << 'Ö';
 717                         else if (name == "U") os << 'Ü';
 718                         else handle_ert(os, "\"{" + name + "}", context);
 719                 }
 720
 721                 else if (t.cs() == "=" || t.cs() == "H" || t.cs() == "c"
 722                       || t.cs() == "^" || t.cs() == "'" || t.cs() == "~") {
 723                         // we need the trim as the LyX parser chokes on such spaces
 724                         context.check_layout(os);
 725                         os << "\n\\i \\" << t.cs() << "{"
 726                            << trim(parse_text(p, FLAG_ITEM, outer, context), " ") << "}\n";
 727                 }
 728
 729                 else if (t.cs() == "ss") {
 730                         context.check_layout(os);
 731                         os << "ß";
 732                 }
 733
 734                 else if (t.cs() == "i" || t.cs() == "j") {
 735                         context.check_layout(os);
 736                         os << "\\" << t.cs() << ' ';
 737                 }
 738
 739                 else if (t.cs() == "\\") {
 740                         context.check_layout(os);
 741                         os << "\n\\newline \n";
 742                 }
 743
 744                 else if (t.cs() == "input") {
 745                         context.check_layout(os);
 746                         handle_ert(os, "\\input{" + p.verbatim_item() + "}\n",
 747                                    context);
 748                 }
 749                 else if (t.cs() == "fancyhead") {
 750                         context.check_layout(os);
 751                         ostringstream ss;
 752                         ss << "\\fancyhead";
 753                         ss << p.getOpt();
 754                         ss << '{' << p.verbatim_item() << "}\n";
 755                         handle_ert(os, ss.str(), context);
 756                 }
 757
 758                 else {
 759                         //cerr << "#: " << t << " mode: " << mode << endl;
 760                         // heuristic: read up to next non-nested space
 761                         /*
 762                         string s = t.asInput();
 763                         string z = p.verbatim_item();
 764                         while (p.good() && z != " " && z.size()) {
 765                                 //cerr << "read: " << z << endl;
 766                                 s += z;
 767                                 z = p.verbatim_item();
 768                         }
 769                         cerr << "found ERT: " << s << endl;
 770                         handle_ert(os, s + ' ', context);
 771                         */
 772                         context.check_layout(os);
 773                         handle_ert(os, t.asInput() + ' ', context);
 774                 }
 775
 776                 if (flags & FLAG_LEAVE) {
 777                         flags &= ~FLAG_LEAVE;
 778                         break;
 779                 }
 780         }
 781 }
 782
 783
 784 // }])