src/tex2lyx/text.C

   1 /**
   2  * \file tex2lyx/text.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author André Pönitz
   7  * \author Jean-Marc Lasgouttes
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 // {[(
  13
  14 #include <config.h>
  15
  16 #include "tex2lyx.h"
  17 #include "context.h"
  18 #include "FloatList.h"
  19 #include "lengthcommon.h"
  20 #include "support/lstrings.h"
  21 #include "support/tostr.h"
  22 #include "support/filetools.h"
  23
  24 #include <iostream>
  25 #include <map>
  26 #include <sstream>
  27 #include <vector>
  28
  29 using lyx::support::rtrim;
  30 using lyx::support::suffixIs;
  31 using lyx::support::contains;
  32 using lyx::support::subst;
  33
  34 using std::cerr;
  35 using std::endl;
  36
  37 using std::map;
  38 using std::ostream;
  39 using std::ostringstream;
  40 using std::istringstream;
  41 using std::string;
  42 using std::vector;
  43
  44
  45 // thin wrapper around parse_text using a string
  46 string parse_text(Parser & p, unsigned flags, const bool outer,
  47                   Context & context)
  48 {
  49         ostringstream os;
  50         parse_text(p, os, flags, outer, context);
  51         return os.str();
  52 }
  53
  54 // parses a subdocument, usually useful in insets (whence the name)
  55 void parse_text_in_inset(Parser & p, ostream & os, unsigned flags, bool outer,
  56                 Context & context)
  57 {
  58         Context newcontext(true, context.textclass);
  59         parse_text(p, os, flags, outer, newcontext);
  60         newcontext.check_end_layout(os);
  61 }
  62
  63
  64 // parses a paragraph snippet, useful for example for \emph{...}
  65 void parse_text_snippet(Parser & p, ostream & os, unsigned flags, bool outer,
  66                 Context & context)
  67 {
  68         Context newcontext(false, context.textclass);
  69         parse_text(p, os, flags, outer, newcontext);
  70         // should not be needed
  71         newcontext.check_end_layout(os);
  72 }
  73
  74
  75 namespace {
  76
  77 char const * known_latex_commands[] = { "ref", "cite", "label", "index",
  78 "printindex", "pageref", "url", "vref", "vpageref", "prettyref", "eqref", 0 };
  79
  80 // LaTeX names for quotes
  81 char const * known_quotes[] = { "glqq", "grqq", "quotedblbase",
  82 "textquotedblleft", "quotesinglbase", "guilsinglleft", "guilsinglright", 0};
  83
  84 // the same as known_quotes with .lyx names
  85 char const * known_coded_quotes[] = { "gld", "grd", "gld",
  86 "grd", "gls", "fls", "frd", 0};
  87
  88 char const * known_sizes[] = { "tiny", "scriptsize", "footnotesize",
  89 "small", "normalsize", "large", "Large", "LARGE", "huge", "Huge", 0};
  90
  91 char const * known_coded_sizes[] = { "tiny", "scriptsize", "footnotesize",
  92 "small", "normal", "large", "larger", "largest",  "huge", "giant", 0};
  93
  94 // splits "x=z, y=b" into a map
  95 map<string, string> split_map(string const & s)
  96 {
  97         map<string, string> res;
  98         vector<string> v;
  99         split(s, v);
 100         for (size_t i = 0; i < v.size(); ++i) {
 101                 size_t const pos   = v[i].find('=');
 102                 string const index = v[i].substr(0, pos);
 103                 string const value = v[i].substr(pos + 1, string::npos);
 104                 res[trim(index)] = trim(value);
 105         }
 106         return res;
 107 }
 108
 109
 110 /*!
 111  * Split a LaTeX length into value and unit.
 112  * The latter can be a real unit like "pt", or a latex length variable
 113  * like "\textwidth". The unit may contain additional stuff like glue
 114  * lengths, but we don't care, because such lengths are ERT anyway.
 115  * \return true if \param value and \param unit are valid.
 116  */
 117 bool splitLatexLength(string const & len, string & value, string & unit)
 118 {
 119         if (len.empty())
 120                 return false;
 121         const string::size_type i = len.find_first_not_of(" -+0123456789.,");
 122         //'4,5' is a valid LaTeX length number. Change it to '4.5'
 123         string const length = subst(len, ',', '.');
 124         if (i == string::npos)
 125                 return false;
 126         if (i == 0) {
 127                 if (len[0] == '\\') {
 128                         // We had something like \textwidth without a factor
 129                         value = "1.0";
 130                 } else {
 131                         return false;
 132                 }
 133         } else {
 134                 value = trim(string(length, 0, i));
 135         }
 136         if (value == "-")
 137                 value = "-1.0";
 138         // 'cM' is a valid LaTeX length unit. Change it to 'cm'
 139         if (contains(len, '\\'))
 140                 unit = trim(string(len, i));
 141         else
 142                 unit = lyx::support::lowercase(trim(string(len, i)));
 143         return true;
 144 }
 145
 146
 147 /// A simple function to translate a latex length to something lyx can
 148 /// understand. Not perfect, but rather best-effort.
 149 bool translate_len(string const & length, string & valstring, string & unit)
 150 {
 151         if (!splitLatexLength(length, valstring, unit))
 152                 return false;
 153         // LyX uses percent values
 154         double value;
 155         istringstream iss(valstring);
 156         iss >> value;
 157         value *= 100;
 158         ostringstream oss;
 159         oss << value;
 160         string const percentval = oss.str();
 161         // a normal length
 162         if (unit.empty() || unit[0] != '\\')
 163                 return true;
 164         string::size_type const i = unit.find(' ');
 165         string const endlen = (i == string::npos) ? string() : string(unit, i);
 166         if (unit == "\\textwidth") {
 167                 valstring = percentval;
 168                 unit = "text%" + endlen;
 169         } else if (unit == "\\columnwidth") {
 170                 valstring = percentval;
 171                 unit = "col%" + endlen;
 172         } else if (unit == "\\paperwidth") {
 173                 valstring = percentval;
 174                 unit = "page%" + endlen;
 175         } else if (unit == "\\linewidth") {
 176                 valstring = percentval;
 177                 unit = "line%" + endlen;
 178         } else if (unit == "\\paperheight") {
 179                 valstring = percentval;
 180                 unit = "pheight%" + endlen;
 181         } else if (unit == "\\textheight") {
 182                 valstring = percentval;
 183                 unit = "theight%" + endlen;
 184         }
 185         return true;
 186 }
 187
 188
 189 string translate_len(string const & length)
 190 {
 191         string unit;
 192         string value;
 193         if (translate_len(length, value, unit))
 194                 return value + unit;
 195         // If the input is invalid, return what we have.
 196         return length;
 197 }
 198
 199
 200 /*!
 201  * Translates a LaTeX length into \param value, \param unit and
 202  * \param special parts suitable for a box inset.
 203  * The difference from translate_len() is that a box inset knows about
 204  * some special "units" that are stored in \param special.
 205  */
 206 void translate_box_len(string const & length, string & value, string & unit, string & special)
 207 {
 208         if (translate_len(length, value, unit)) {
 209                 if (unit == "\\height" || unit == "\\depth" ||
 210                     unit == "\\totalheight" || unit == "\\width") {
 211                         special = unit.substr(1);
 212                         // The unit is not used, but LyX requires a dummy setting
 213                         unit = "in";
 214                 } else
 215                         special = "none";
 216         } else {
 217                 value.clear();
 218                 unit = length;
 219                 special = "none";
 220         }
 221 }
 222
 223
 224 void begin_inset(ostream & os, string const & name)
 225 {
 226         os << "\n\\begin_inset " << name;
 227 }
 228
 229
 230 void end_inset(ostream & os)
 231 {
 232         os << "\n\\end_inset \n\n";
 233 }
 234
 235
 236 void skip_braces(Parser & p)
 237 {
 238         if (p.next_token().cat() != catBegin)
 239                 return;
 240         p.get_token();
 241         if (p.next_token().cat() == catEnd) {
 242                 p.get_token();
 243                 return;
 244         }
 245         p.putback();
 246 }
 247
 248
 249 void handle_ert(ostream & os, string const & s, Context & context, bool check_layout = true)
 250 {
 251         if (check_layout) {
 252                 // We must have a valid layout before outputting the ERT inset.
 253                 context.check_layout(os);
 254         }
 255         Context newcontext(true, context.textclass);
 256         begin_inset(os, "ERT");
 257         os << "\nstatus collapsed\n";
 258         newcontext.check_layout(os);
 259         for (string::const_iterator it = s.begin(), et = s.end(); it != et; ++it) {
 260                 if (*it == '\\')
 261                         os << "\n\\backslash \n";
 262                 else if (*it == '\n')
 263                         os << "\n\\newline \n";
 264                 else
 265                         os << *it;
 266         }
 267         newcontext.check_end_layout(os);
 268         end_inset(os);
 269 }
 270
 271
 272 void handle_comment(ostream & os, string const & s, Context & context)
 273 {
 274         // TODO: Handle this better
 275         Context newcontext(true, context.textclass);
 276         begin_inset(os, "ERT");
 277         os << "\nstatus collapsed\n";
 278         newcontext.check_layout(os);
 279         for (string::const_iterator it = s.begin(), et = s.end(); it != et; ++it) {
 280                 if (*it == '\\')
 281                         os << "\n\\backslash \n";
 282                 else
 283                         os << *it;
 284         }
 285         // make sure that our comment is the last thing on the line
 286         os << "\n\\newline";
 287         newcontext.check_end_layout(os);
 288         end_inset(os);
 289 }
 290
 291
 292 class isLayout : public std::unary_function<LyXLayout_ptr, bool> {
 293 public:
 294         isLayout(string const name) : name_(name) {}
 295         bool operator()(LyXLayout_ptr const & ptr) const {
 296                 return ptr->latexname() == name_;
 297         }
 298 private:
 299         string const name_;
 300 };
 301
 302
 303 LyXLayout_ptr findLayout(LyXTextClass const & textclass,
 304                          string const & name)
 305 {
 306         LyXTextClass::const_iterator beg  = textclass.begin();
 307         LyXTextClass::const_iterator end = textclass.end();
 308
 309         LyXTextClass::const_iterator
 310                 it = std::find_if(beg, end, isLayout(name));
 311
 312         return (it == end) ? LyXLayout_ptr() : *it;
 313 }
 314
 315
 316 void eat_whitespace(Parser &, ostream &, Context &, bool);
 317
 318
 319 void output_command_layout(ostream & os, Parser & p, bool outer,
 320                            Context & parent_context,
 321                            LyXLayout_ptr newlayout)
 322 {
 323         parent_context.check_end_layout(os);
 324         Context context(true, parent_context.textclass, newlayout,
 325                         parent_context.layout);
 326         if (parent_context.deeper_paragraph) {
 327                 // We are beginning a nested environment after a
 328                 // deeper paragraph inside the outer list environment.
 329                 // Therefore we don't need to output a "begin deeper".
 330                 context.need_end_deeper = true;
 331         }
 332         context.check_deeper(os);
 333         context.check_layout(os);
 334         if (context.layout->optionalargs > 0) {
 335                 eat_whitespace(p, os, context, false);
 336                 if (p.next_token().character() == '[') {
 337                         p.get_token(); // eat '['
 338                         begin_inset(os, "OptArg\n");
 339                         os << "status collapsed\n\n";
 340                         parse_text_in_inset(p, os, FLAG_BRACK_LAST, outer, context);
 341                         end_inset(os);
 342                         eat_whitespace(p, os, context, false);
 343                 }
 344         }
 345         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
 346         context.check_end_layout(os);
 347         if (parent_context.deeper_paragraph) {
 348                 // We must suppress the "end deeper" because we
 349                 // suppressed the "begin deeper" above.
 350                 context.need_end_deeper = false;
 351         }
 352         context.check_end_deeper(os);
 353         // We don't need really a new paragraph, but
 354         // we must make sure that the next item gets a \begin_layout.
 355         parent_context.new_paragraph(os);
 356 }
 357
 358
 359 /*!
 360  * Output a space if necessary.
 361  * This function gets called for every whitespace token.
 362  *
 363  * We have three cases here:
 364  * 1. A space must be suppressed. Example: The lyxcode case below
 365  * 2. A space may be suppressed. Example: Spaces before "\par"
 366  * 3. A space must not be suppressed. Example: A space between two words
 367  *
 368  * We currently handle only 1. and 3 and from 2. only the case of
 369  * spaces before newlines as a side effect.
 370  *
 371  * 2. could be used to suppress as many spaces as possible. This has two effects:
 372  * - Reimporting LyX generated LaTeX files changes almost no whitespace
 373  * - Superflous whitespace from non LyX generated LaTeX files is removed.
 374  * The drawback is that the logic inside the function becomes
 375  * complicated, and that is the reason why it is not implemented.
 376  */
 377 void check_space(Parser const & p, ostream & os, Context & context)
 378 {
 379         Token const next = p.next_token();
 380         Token const curr = p.curr_token();
 381         // A space before a single newline and vice versa must be ignored
 382         // LyX emits a newline before \end{lyxcode}.
 383         // This newline must be ignored,
 384         // otherwise LyX will add an additional protected space.
 385         if (next.cat() == catSpace ||
 386             next.cat() == catNewline ||
 387             (next.cs() == "end" && context.layout->free_spacing && curr.cat() == catNewline)) {
 388                 return;
 389         }
 390         context.check_layout(os);
 391         os << ' ';
 392 }
 393
 394
 395 /*!
 396  * Check whether \p command is a known command. If yes,
 397  * handle the command with all arguments.
 398  * \return true if the command was parsed, false otherwise.
 399  */
 400 bool parse_command(string const & command, Parser & p, ostream & os,
 401                    bool outer, Context & context)
 402 {
 403         if (known_commands.find(command) != known_commands.end()) {
 404                 vector<ArgumentType> const & template_arguments = known_commands[command];
 405                 string ert = command;
 406                 size_t no_arguments = template_arguments.size();
 407                 for (size_t i = 0; i < no_arguments; ++i) {
 408                         switch (template_arguments[i]) {
 409                         case required:
 410                                 // This argument contains regular LaTeX
 411                                 handle_ert(os, ert + '{', context);
 412                                 parse_text(p, os, FLAG_ITEM, outer, context);
 413                                 ert = "}";
 414                                 break;
 415                         case verbatim:
 416                                 // This argument may contain special characters
 417                                 ert += '{' + p.verbatim_item() + '}';
 418                                 break;
 419                         case optional:
 420                                 ert += p.getOpt();
 421                                 break;
 422                         }
 423                 }
 424                 handle_ert(os, ert, context);
 425                 return true;
 426         }
 427         return false;
 428 }
 429
 430
 431 /// Parses a minipage or parbox
 432 void parse_box(Parser & p, ostream & os, unsigned flags, bool outer,
 433                Context & parent_context, bool use_parbox)
 434 {
 435         string position;
 436         string inner_pos;
 437         string height_value = "0";
 438         string height_unit = "pt";
 439         string height_special = "none";
 440         string latex_height;
 441         if (p.next_token().asInput() == "[") {
 442                 position = p.getArg('[', ']');
 443                 if (position != "t" && position != "c" && position != "b") {
 444                         position = "c";
 445                         cerr << "invalid position for minipage/parbox" << endl;
 446                 }
 447                 if (p.next_token().asInput() == "[") {
 448                         latex_height = p.getArg('[', ']');
 449                         translate_box_len(latex_height, height_value, height_unit, height_special);
 450
 451                         if (p.next_token().asInput() == "[") {
 452                                 inner_pos = p.getArg('[', ']');
 453                                 if (inner_pos != "c" && inner_pos != "t" &&
 454                                     inner_pos != "b" && inner_pos != "s") {
 455                                         inner_pos = position;
 456                                         cerr << "invalid inner_pos for minipage/parbox"
 457                                              << endl;
 458                                 }
 459                         }
 460                 }
 461         }
 462         string width_value;
 463         string width_unit;
 464         string const latex_width = p.verbatim_item();
 465         translate_len(latex_width, width_value, width_unit);
 466         if (contains(width_unit, '\\') || contains(height_unit, '\\')) {
 467                 // LyX can't handle length variables
 468                 ostringstream ss;
 469                 if (use_parbox)
 470                         ss << "\\parbox";
 471                 else
 472                         ss << "\\begin{minipage}";
 473                 if (!position.empty())
 474                         ss << '[' << position << ']';
 475                 if (!latex_height.empty())
 476                         ss << '[' << latex_height << ']';
 477                 if (!inner_pos.empty())
 478                         ss << '[' << inner_pos << ']';
 479                 ss << "{" << latex_width << "}";
 480                 if (use_parbox)
 481                         ss << '{';
 482                 handle_ert(os, ss.str(), parent_context);
 483                 parent_context.new_paragraph(os);
 484                 parse_text_in_inset(p, os, flags, outer, parent_context);
 485                 if (use_parbox)
 486                         handle_ert(os, "}", parent_context);
 487                 else
 488                         handle_ert(os, "\\end{minipage}", parent_context);
 489         } else {
 490                 // LyX does not like empty positions, so we have
 491                 // to set them to the LaTeX default values here.
 492                 if (position.empty())
 493                         position = "c";
 494                 if (inner_pos.empty())
 495                         inner_pos = position;
 496                 parent_context.check_layout(os);
 497                 begin_inset(os, "Box Frameless\n");
 498                 os << "position \"" << position << "\"\n";
 499                 os << "hor_pos \"c\"\n";
 500                 os << "has_inner_box 1\n";
 501                 os << "inner_pos \"" << inner_pos << "\"\n";
 502                 os << "use_parbox " << use_parbox << "\n";
 503                 os << "width \"" << width_value << width_unit << "\"\n";
 504                 os << "special \"none\"\n";
 505                 os << "height \"" << height_value << height_unit << "\"\n";
 506                 os << "height_special \"" << height_special << "\"\n";
 507                 os << "status open\n\n";
 508                 parse_text_in_inset(p, os, flags, outer, parent_context);
 509                 end_inset(os);
 510 #ifdef PRESERVE_LAYOUT
 511                 // lyx puts a % after the end of the minipage
 512                 if (p.next_token().cat() == catNewline && p.next_token().cs().size() > 1) {
 513                         // new paragraph
 514                         //handle_comment(os, "%dummy", parent_context);
 515                         p.get_token();
 516                         p.skip_spaces();
 517                         parent_context.new_paragraph(os);
 518                 }
 519                 else if (p.next_token().cat() == catSpace || p.next_token().cat() == catNewline) {
 520                         //handle_comment(os, "%dummy", parent_context);
 521                         p.get_token();
 522                         p.skip_spaces();
 523                         // We add a protected space if something real follows
 524                         if (p.good() && p.next_token().cat() != catComment) {
 525                                 os << "\\InsetSpace ~\n";
 526                         }
 527                 }
 528 #endif
 529         }
 530 }
 531
 532
 533 void parse_environment(Parser & p, ostream & os, bool outer,
 534                        Context & parent_context)
 535 {
 536         LyXLayout_ptr newlayout;
 537         string const name = p.getArg('{', '}');
 538         const bool is_starred = suffixIs(name, '*');
 539         string const unstarred_name = rtrim(name, "*");
 540         eat_whitespace(p, os, parent_context, false);
 541         active_environments.push_back(name);
 542
 543         if (is_math_env(name)) {
 544                 parent_context.check_layout(os);
 545                 begin_inset(os, "Formula ");
 546                 os << "\\begin{" << name << "}";
 547                 parse_math(p, os, FLAG_END, MATH_MODE);
 548                 os << "\\end{" << name << "}";
 549                 end_inset(os);
 550         }
 551
 552         else if (name == "tabular") {
 553                 parent_context.check_layout(os);
 554                 begin_inset(os, "Tabular ");
 555                 handle_tabular(p, os, parent_context);
 556                 end_inset(os);
 557         }
 558
 559         else if (parent_context.textclass.floats().typeExist(unstarred_name)) {
 560                 parent_context.check_layout(os);
 561                 begin_inset(os, "Float " + unstarred_name + "\n");
 562                 if (p.next_token().asInput() == "[") {
 563                         os << "placement " << p.getArg('[', ']') << '\n';
 564                 }
 565                 os << "wide " << tostr(is_starred)
 566                    << "\nstatus open\n\n";
 567                 parse_text_in_inset(p, os, FLAG_END, outer, parent_context);
 568                 end_inset(os);
 569                 // We don't need really a new paragraph, but
 570                 // we must make sure that the next item gets a \begin_layout.
 571                 parent_context.new_paragraph(os);
 572         }
 573
 574         else if (name == "minipage")
 575                 parse_box(p, os, FLAG_END, outer, parent_context, false);
 576
 577         // Alignment settings
 578         else if (name == "center" || name == "flushleft" || name == "flushright" ||
 579                  name == "centering" || name == "raggedright" || name == "raggedleft") {
 580                 // We must begin a new paragraph if not already done
 581                 if (! parent_context.atParagraphStart()) {
 582                         parent_context.check_end_layout(os);
 583                         parent_context.new_paragraph(os);
 584                 }
 585                 if (name == "flushleft" || name == "raggedright")
 586                         parent_context.add_extra_stuff("\\align left ");
 587                 else if (name == "flushright" || name == "raggedleft")
 588                         parent_context.add_extra_stuff("\\align right ");
 589                 else
 590                         parent_context.add_extra_stuff("\\align center ");
 591                 parse_text(p, os, FLAG_END, outer, parent_context);
 592                 // Just in case the environment is empty ..
 593                 parent_context.extra_stuff.erase();
 594                 // We must begin a new paragraph to reset the alignment
 595                 parent_context.new_paragraph(os);
 596         }
 597
 598         // The single '=' is meant here.
 599         else if ((newlayout = findLayout(parent_context.textclass, name)).get() &&
 600                    newlayout->isEnvironment()) {
 601                 Context context(true, parent_context.textclass, newlayout,
 602                                 parent_context.layout);
 603                 if (parent_context.deeper_paragraph) {
 604                         // We are beginning a nested environment after a
 605                         // deeper paragraph inside the outer list environment.
 606                         // Therefore we don't need to output a "begin deeper".
 607                         context.need_end_deeper = true;
 608                 }
 609                 parent_context.check_end_layout(os);
 610                 switch (context.layout->latextype) {
 611                 case  LATEX_LIST_ENVIRONMENT:
 612                         context.extra_stuff = "\\labelwidthstring "
 613                                 + p.verbatim_item() + '\n';
 614                         p.skip_spaces();
 615                         break;
 616                 case  LATEX_BIB_ENVIRONMENT:
 617                         p.verbatim_item(); // swallow next arg
 618                         p.skip_spaces();
 619                         break;
 620                 default:
 621                         break;
 622                 }
 623                 context.check_deeper(os);
 624                 parse_text(p, os, FLAG_END, outer, context);
 625                 context.check_end_layout(os);
 626                 if (parent_context.deeper_paragraph) {
 627                         // We must suppress the "end deeper" because we
 628                         // suppressed the "begin deeper" above.
 629                         context.need_end_deeper = false;
 630                 }
 631                 context.check_end_deeper(os);
 632                 parent_context.new_paragraph(os);
 633         }
 634
 635         else if (name == "appendix") {
 636                 // This is no good latex style, but it works and is used in some documents...
 637                 parent_context.check_end_layout(os);
 638                 Context context(true, parent_context.textclass, parent_context.layout,
 639                                 parent_context.layout);
 640                 context.check_layout(os);
 641                 os << "\\start_of_appendix\n";
 642                 parse_text(p, os, FLAG_END, outer, context);
 643                 context.check_end_layout(os);
 644         }
 645
 646         else if (name == "comment") {
 647                 parent_context.check_layout(os);
 648                 begin_inset(os, "Note Comment\n");
 649                 os << "status open\n";
 650                 parse_text_in_inset(p, os, FLAG_END, outer, parent_context);
 651                 end_inset(os);
 652         }
 653
 654         else if (name == "lyxgreyedout") {
 655                 parent_context.check_layout(os);
 656                 begin_inset(os, "Note Greyedout\n");
 657                 os << "status open\n";
 658                 parse_text_in_inset(p, os, FLAG_END, outer, parent_context);
 659                 end_inset(os);
 660         }
 661
 662         else if (name == "tabbing") {
 663                 // We need to remember that we have to handle '\=' specially
 664                 handle_ert(os, "\\begin{" + name + "}", parent_context);
 665                 parse_text_snippet(p, os, FLAG_END | FLAG_TABBING, outer, parent_context);
 666                 handle_ert(os, "\\end{" + name + "}", parent_context);
 667         }
 668
 669         else {
 670                 handle_ert(os, "\\begin{" + name + "}", parent_context);
 671                 parse_text_snippet(p, os, FLAG_END, outer, parent_context);
 672                 handle_ert(os, "\\end{" + name + "}", parent_context);
 673         }
 674
 675         active_environments.pop_back();
 676         if (name != "math")
 677                 p.skip_spaces();
 678 }
 679
 680 /// parses a comment and outputs it to \p os.
 681 void parse_comment(Parser & p, ostream & os, Token const & t, Context & context)
 682 {
 683         BOOST_ASSERT(t.cat() == catComment);
 684         context.check_layout(os);
 685         if (!t.cs().empty()) {
 686                 handle_comment(os, '%' + t.cs(), context);
 687                 if (p.next_token().cat() == catNewline) {
 688                         // A newline after a comment line starts a new
 689                         // paragraph
 690                         if(!context.atParagraphStart()) {
 691                                 // Only start a new paragraph if not already
 692                                 // done (we might get called recursively)
 693                                 context.new_paragraph(os);
 694                         }
 695                         eat_whitespace(p, os, context, true);
 696                 }
 697         } else {
 698                 // "%\n" combination
 699                 p.skip_spaces();
 700         }
 701 }
 702
 703
 704 /*!
 705  * Reads spaces and comments until the first non-space, non-comment token.
 706  * New paragraphs (double newlines or \\par) are handled like simple spaces
 707  * if \p eatParagraph is true.
 708  * Spaces are skipped, but comments are written to \p os.
 709  */
 710 void eat_whitespace(Parser & p, ostream & os, Context & context,
 711                     bool eatParagraph)
 712 {
 713         while (p.good()) {
 714                 Token const & t = p.get_token();
 715                 if (t.cat() == catComment)
 716                         parse_comment(p, os, t, context);
 717                 else if ((! eatParagraph && p.isParagraph()) ||
 718                          (t.cat() != catSpace && t.cat() != catNewline)) {
 719                         p.putback();
 720                         return;
 721                 }
 722         }
 723 }
 724
 725 } // anonymous namespace
 726
 727
 728 void parse_text(Parser & p, ostream & os, unsigned flags, bool outer,
 729                 Context & context)
 730 {
 731         LyXLayout_ptr newlayout;
 732         // Store the latest bibliographystyle (needed for bibtex inset)
 733         string bibliographystyle;
 734         while (p.good()) {
 735                 Token const & t = p.get_token();
 736
 737 #ifdef FILEDEBUG
 738                 cerr << "t: " << t << " flags: " << flags << "\n";
 739 #endif
 740
 741                 if (flags & FLAG_ITEM) {
 742                         if (t.cat() == catSpace)
 743                                 continue;
 744
 745                         flags &= ~FLAG_ITEM;
 746                         if (t.cat() == catBegin) {
 747                                 // skip the brace and collect everything to the next matching
 748                                 // closing brace
 749                                 flags |= FLAG_BRACE_LAST;
 750                                 continue;
 751                         }
 752
 753                         // handle only this single token, leave the loop if done
 754                         flags |= FLAG_LEAVE;
 755                 }
 756
 757                 if (t.character() == ']' && (flags & FLAG_BRACK_LAST))
 758                         return;
 759
 760                 //
 761                 // cat codes
 762                 //
 763                 if (t.cat() == catMath) {
 764                         // we are inside some text mode thingy, so opening new math is allowed
 765                         context.check_layout(os);
 766                         begin_inset(os, "Formula ");
 767                         Token const & n = p.get_token();
 768                         if (n.cat() == catMath && outer) {
 769                                 // TeX's $$...$$ syntax for displayed math
 770                                 os << "\\[";
 771                                 parse_math(p, os, FLAG_SIMPLE, MATH_MODE);
 772                                 os << "\\]";
 773                                 p.get_token(); // skip the second '$' token
 774                         } else {
 775                                 // simple $...$  stuff
 776                                 p.putback();
 777                                 os << '$';
 778                                 parse_math(p, os, FLAG_SIMPLE, MATH_MODE);
 779                                 os << '$';
 780                         }
 781                         end_inset(os);
 782                 }
 783
 784                 else if (t.cat() == catSuper || t.cat() == catSub)
 785                         cerr << "catcode " << t << " illegal in text mode\n";
 786
 787                 // Basic support for english quotes. This should be
 788                 // extended to other quotes, but is not so easy (a
 789                 // left english quote is the same as a right german
 790                 // quote...)
 791                 else if (t.asInput() == "`"
 792                          && p.next_token().asInput() == "`") {
 793                         context.check_layout(os);
 794                         begin_inset(os, "Quotes ");
 795                         os << "eld";
 796                         end_inset(os);
 797                         p.get_token();
 798                         skip_braces(p);
 799                 }
 800                 else if (t.asInput() == "'"
 801                          && p.next_token().asInput() == "'") {
 802                         context.check_layout(os);
 803                         begin_inset(os, "Quotes ");
 804                         os << "erd";
 805                         end_inset(os);
 806                         p.get_token();
 807                         skip_braces(p);
 808                 }
 809
 810                 else if (t.cat() == catSpace || (t.cat() == catNewline && ! p.isParagraph()))
 811                         check_space(p, os, context);
 812
 813                 else if (t.cat() == catLetter ||
 814                                t.cat() == catOther ||
 815                                t.cat() == catAlign ||
 816                                t.cat() == catParameter) {
 817                         context.check_layout(os);
 818                         os << t.character();
 819                 }
 820
 821                 else if (p.isParagraph()) {
 822                         context.new_paragraph(os);
 823                         eat_whitespace(p, os, context, true);
 824                 }
 825
 826                 else if (t.cat() == catActive) {
 827                         context.check_layout(os);
 828                         if (t.character() == '~') {
 829                                 if (context.layout->free_spacing)
 830                                         os << ' ';
 831                                 else
 832                                         os << "\\InsetSpace ~\n";
 833                         } else
 834                                 os << t.character();
 835                 }
 836
 837                 else if (t.cat() == catBegin) {
 838                         // special handling of size changes
 839                         context.check_layout(os);
 840                         bool const is_size = is_known(p.next_token().cs(), known_sizes);
 841                         Token const prev = p.prev_token();
 842                         string const s = parse_text(p, FLAG_BRACE_LAST, outer, context);
 843                         if (s.empty() && (p.next_token().character() == '`' ||
 844                                           (prev.character() == '-' && p.next_token().character())))
 845                                 ; // ignore it in {}`` or -{}-
 846                         else if (is_size || s == "[" || s == "]" || s == "*")
 847                                 os << s;
 848                         else {
 849                                 handle_ert(os, "{", context, false);
 850                                 // s will end the current layout and begin a new one if necessary
 851                                 os << s;
 852                                 handle_ert(os, "}", context);
 853                         }
 854                 }
 855
 856                 else if (t.cat() == catEnd) {
 857                         if (flags & FLAG_BRACE_LAST) {
 858                                 return;
 859                         }
 860                         cerr << "stray '}' in text\n";
 861                         handle_ert(os, "}", context);
 862                 }
 863
 864                 else if (t.cat() == catComment)
 865                         parse_comment(p, os, t, context);
 866
 867                 //
 868                 // control sequences
 869                 //
 870
 871                 else if (t.cs() == "(") {
 872                         context.check_layout(os);
 873                         begin_inset(os, "Formula");
 874                         os << " \\(";
 875                         parse_math(p, os, FLAG_SIMPLE2, MATH_MODE);
 876                         os << "\\)";
 877                         end_inset(os);
 878                 }
 879
 880                 else if (t.cs() == "[") {
 881                         context.check_layout(os);
 882                         begin_inset(os, "Formula");
 883                         os << " \\[";
 884                         parse_math(p, os, FLAG_EQUATION, MATH_MODE);
 885                         os << "\\]";
 886                         end_inset(os);
 887                 }
 888
 889                 else if (t.cs() == "begin")
 890                         parse_environment(p, os, outer, context);
 891
 892                 else if (t.cs() == "end") {
 893                         if (flags & FLAG_END) {
 894                                 // eat environment name
 895                                 string const name = p.getArg('{', '}');
 896                                 if (name != active_environment())
 897                                         cerr << "\\end{" + name + "} does not match \\begin{"
 898                                                 + active_environment() + "}\n";
 899                                 return;
 900                         }
 901                         p.error("found 'end' unexpectedly");
 902                 }
 903
 904                 else if (t.cs() == "item") {
 905                         p.skip_spaces();
 906                         string s;
 907                         bool optarg = false;
 908                         if (p.next_token().character() == '[') {
 909                                 p.get_token(); // eat '['
 910                                 Context newcontext(false, context.textclass);
 911                                 s = parse_text(p, FLAG_BRACK_LAST, outer, newcontext);
 912                                 optarg = true;
 913                         }
 914                         context.set_item();
 915                         context.check_layout(os);
 916                         if (optarg) {
 917                                 if (context.layout->labeltype != LABEL_MANUAL) {
 918                                         // lyx does not support \item[\mybullet] in itemize environments
 919                                         handle_ert(os, "[", context);
 920                                         os << s;
 921                                         handle_ert(os, "]", context);
 922                                 } else if (!s.empty()) {
 923                                         // The space is needed to separate the item from the rest of the sentence.
 924                                         os << s << ' ';
 925                                         eat_whitespace(p, os, context, false);
 926                                 }
 927                         }
 928                 }
 929
 930                 else if (t.cs() == "bibitem") {
 931                         context.set_item();
 932                         context.check_layout(os);
 933                         os << "\\bibitem ";
 934                         os << p.getOpt();
 935                         os << '{' << p.verbatim_item() << '}' << "\n";
 936                 }
 937
 938                 else if (t.cs() == "def") {
 939                         context.check_layout(os);
 940                         eat_whitespace(p, os, context, false);
 941                         string name = p.get_token().cs();
 942                         while (p.next_token().cat() != catBegin)
 943                                 name += p.get_token().asString();
 944                         handle_ert(os, "\\def\\" + name + '{' + p.verbatim_item() + '}', context);
 945                 }
 946
 947                 else if (t.cs() == "noindent") {
 948                         p.skip_spaces();
 949                         context.add_extra_stuff("\\noindent ");
 950                 }
 951
 952                 else if (t.cs() == "appendix") {
 953                         p.skip_spaces();
 954                         context.add_extra_stuff("\\start_of_appendix ");
 955                 }
 956
 957                 // Must attempt to parse "Section*" before "Section".
 958                 else if ((p.next_token().asInput() == "*") &&
 959                          // The single '=' is meant here.
 960                          (newlayout = findLayout(context.textclass,
 961                                                  t.cs() + '*')).get() &&
 962                          newlayout->isCommand()) {
 963                         p.get_token();
 964                         output_command_layout(os, p, outer, context, newlayout);
 965                         p.skip_spaces();
 966                 }
 967
 968                 // The single '=' is meant here.
 969                 else if ((newlayout = findLayout(context.textclass, t.cs())).get() &&
 970                          newlayout->isCommand()) {
 971                         output_command_layout(os, p, outer, context, newlayout);
 972                         p.skip_spaces();
 973                 }
 974
 975                 else if (t.cs() == "includegraphics") {
 976                         map<string, string> opts = split_map(p.getArg('[', ']'));
 977                         string name = subst(p.verbatim_item(), "\\lyxdot ", ".");
 978
 979                         context.check_layout(os);
 980                         begin_inset(os, "Graphics ");
 981                         os << "\n\tfilename " << name << '\n';
 982                         if (opts.find("width") != opts.end())
 983                                 os << "\twidth "
 984                                    << translate_len(opts["width"]) << '\n';
 985                         if (opts.find("height") != opts.end())
 986                                 os << "\theight "
 987                                    << translate_len(opts["height"]) << '\n';
 988                         if (opts.find("scale") != opts.end()) {
 989                                 istringstream iss(opts["scale"]);
 990                                 double val;
 991                                 iss >> val;
 992                                 val = val*100;
 993                                 os << "\tscale " << val << '\n';
 994                         }
 995                         if (opts.find("angle") != opts.end())
 996                                 os << "\trotateAngle "
 997                                    << opts["angle"] << '\n';
 998                         if (opts.find("origin") != opts.end()) {
 999                                 ostringstream ss;
1000                                 string const opt = opts["origin"];
1001                                 if (opt.find('l') != string::npos) ss << "left";
1002                                 if (opt.find('r') != string::npos) ss << "right";
1003                                 if (opt.find('c') != string::npos) ss << "center";
1004                                 if (opt.find('t') != string::npos) ss << "Top";
1005                                 if (opt.find('b') != string::npos) ss << "Bottom";
1006                                 if (opt.find('B') != string::npos) ss << "Baseline";
1007                                 if (!ss.str().empty())
1008                                         os << "\trotateOrigin " << ss.str() << '\n';
1009                                 else
1010                                         cerr << "Warning: Ignoring unknown includegraphics origin argument '" << opt << "'\n";
1011                         }
1012                         if (opts.find("keepaspectratio") != opts.end())
1013                                 os << "\tkeepAspectRatio\n";
1014                         if (opts.find("clip") != opts.end())
1015                                 os << "\tclip\n";
1016                         if (opts.find("draft") != opts.end())
1017                                 os << "\tdraft\n";
1018                         if (opts.find("bb") != opts.end())
1019                                 os << "\tBoundingBox "
1020                                    << opts["bb"] << '\n';
1021                         int numberOfbbOptions = 0;
1022                         if (opts.find("bbllx") != opts.end())
1023                                 numberOfbbOptions++;
1024                         if (opts.find("bblly") != opts.end())
1025                                 numberOfbbOptions++;
1026                         if (opts.find("bburx") != opts.end())
1027                                 numberOfbbOptions++;
1028                         if (opts.find("bbury") != opts.end())
1029                                 numberOfbbOptions++;
1030                         if (numberOfbbOptions == 4)
1031                                 os << "\tBoundingBox "
1032                                    << opts["bbllx"] << opts["bblly"]
1033                                    << opts["bburx"] << opts["bbury"] << '\n';
1034                         else if (numberOfbbOptions > 0)
1035                                 cerr << "Warning: Ignoring incomplete includegraphics boundingbox arguments.\n";
1036                         numberOfbbOptions = 0;
1037                         if (opts.find("natwidth") != opts.end())
1038                                 numberOfbbOptions++;
1039                         if (opts.find("natheight") != opts.end())
1040                                 numberOfbbOptions++;
1041                         if (numberOfbbOptions == 2)
1042                                 os << "\tBoundingBox 0bp 0bp "
1043                                    << opts["natwidth"] << opts["natheight"] << '\n';
1044                         else if (numberOfbbOptions > 0)
1045                                 cerr << "Warning: Ignoring incomplete includegraphics boundingbox arguments.\n";
1046                         ostringstream special;
1047                         if (opts.find("hiresbb") != opts.end())
1048                                 special << "hiresbb,";
1049                         if (opts.find("trim") != opts.end())
1050                                 special << "trim,";
1051                         if (opts.find("viewport") != opts.end())
1052                                 special << "viewport=" << opts["viewport"] << ',';
1053                         if (opts.find("totalheight") != opts.end())
1054                                 special << "totalheight=" << opts["totalheight"] << ',';
1055                         if (opts.find("type") != opts.end())
1056                                 special << "type=" << opts["type"] << ',';
1057                         if (opts.find("ext") != opts.end())
1058                                 special << "ext=" << opts["ext"] << ',';
1059                         if (opts.find("read") != opts.end())
1060                                 special << "read=" << opts["read"] << ',';
1061                         if (opts.find("command") != opts.end())
1062                                 special << "command=" << opts["command"] << ',';
1063                         string s_special = special.str();
1064                         if (!s_special.empty()) {
1065                                 // We had special arguments. Remove the trailing ','.
1066                                 os << "\tspecial " << s_special.substr(0, s_special.size() - 1) << '\n';
1067                         }
1068                         // TODO: Handle the unknown settings better.
1069                         // Warn about invalid options.
1070                         // Check whether some option was given twice.
1071                         end_inset(os);
1072                 }
1073
1074                 else if (t.cs() == "footnote") {
1075                         p.skip_spaces();
1076                         context.check_layout(os);
1077                         begin_inset(os, "Foot\n");
1078                         os << "status collapsed\n\n";
1079                         parse_text_in_inset(p, os, FLAG_ITEM, false, context);
1080                         end_inset(os);
1081                 }
1082
1083                 else if (t.cs() == "marginpar") {
1084                         p.skip_spaces();
1085                         context.check_layout(os);
1086                         begin_inset(os, "Marginal\n");
1087                         os << "status collapsed\n\n";
1088                         parse_text_in_inset(p, os, FLAG_ITEM, false, context);
1089                         end_inset(os);
1090                 }
1091
1092                 else if (t.cs() == "ensuremath") {
1093                         p.skip_spaces();
1094                         context.check_layout(os);
1095                         Context newcontext(false, context.textclass);
1096                         string s = parse_text(p, FLAG_ITEM, false, newcontext);
1097                         if (s == "±" || s == "³" || s == "²" || s == "µ")
1098                                 os << s;
1099                         else
1100                                 handle_ert(os, "\\ensuremath{" + s + "}",
1101                                            context);
1102                 }
1103
1104                 else if (t.cs() == "hfill") {
1105                         context.check_layout(os);
1106                         os << "\n\\hfill \n";
1107                         skip_braces(p);
1108                         p.skip_spaces();
1109                 }
1110
1111                 else if (t.cs() == "makeindex" || t.cs() == "maketitle") {
1112                         p.skip_spaces();
1113                         skip_braces(p); // swallow this
1114                 }
1115
1116                 else if (t.cs() == "tableofcontents") {
1117                         p.skip_spaces();
1118                         context.check_layout(os);
1119                         begin_inset(os, "LatexCommand \\tableofcontents\n");
1120                         end_inset(os);
1121                         skip_braces(p); // swallow this
1122                 }
1123
1124                 else if (t.cs() == "listoffigures") {
1125                         p.skip_spaces();
1126                         context.check_layout(os);
1127                         begin_inset(os, "FloatList figure\n");
1128                         end_inset(os);
1129                         skip_braces(p); // swallow this
1130                 }
1131
1132                 else if (t.cs() == "listoftables") {
1133                         p.skip_spaces();
1134                         context.check_layout(os);
1135                         begin_inset(os, "FloatList table\n");
1136                         end_inset(os);
1137                         skip_braces(p); // swallow this
1138                 }
1139
1140                 else if (t.cs() == "listof") {
1141                         p.skip_spaces(true);
1142                         string const name = p.get_token().asString();
1143                         if (context.textclass.floats().typeExist(name)) {
1144                                 context.check_layout(os);
1145                                 begin_inset(os, "FloatList ");
1146                                 os << name << "\n";
1147                                 end_inset(os);
1148                                 p.get_token(); // swallow second arg
1149                         } else
1150                                 handle_ert(os, "\\listof{" + name + "}", context);
1151                 }
1152
1153                 else if (t.cs() == "textrm") {
1154                         context.check_layout(os);
1155                         os << "\n\\family roman \n";
1156                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
1157                         os << "\n\\family default \n";
1158                 }
1159
1160                 else if (t.cs() == "textsf") {
1161                         context.check_layout(os);
1162                         os << "\n\\family sans \n";
1163                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
1164                         os << "\n\\family default \n";
1165                 }
1166
1167                 else if (t.cs() == "textsl") {
1168                         context.check_layout(os);
1169                         os << "\n\\shape slanted \n";
1170                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
1171                         os << "\n\\shape default \n";
1172                 }
1173
1174                 else if (t.cs() == "texttt") {
1175                         context.check_layout(os);
1176                         os << "\n\\family typewriter \n";
1177                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
1178                         os << "\n\\family default \n";
1179                 }
1180
1181                 else if (t.cs() == "textit") {
1182                         context.check_layout(os);
1183                         os << "\n\\shape italic \n";
1184                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
1185                         os << "\n\\shape default \n";
1186                 }
1187
1188                 else if (t.cs() == "textsc") {
1189                         context.check_layout(os);
1190                         os << "\n\\noun on \n";
1191                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
1192                         os << "\n\\noun default \n";
1193                 }
1194
1195                 else if (t.cs() == "textbf") {
1196                         context.check_layout(os);
1197                         os << "\n\\series bold \n";
1198                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
1199                         os << "\n\\series default \n";
1200                 }
1201
1202                 else if (t.cs() == "underbar") {
1203                         context.check_layout(os);
1204                         os << "\n\\bar under \n";
1205                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
1206                         os << "\n\\bar default \n";
1207                 }
1208
1209                 else if (t.cs() == "emph" || t.cs() == "noun") {
1210                         context.check_layout(os);
1211                         os << "\n\\" << t.cs() << " on \n";
1212                         parse_text_snippet(p, os, FLAG_ITEM, outer, context);
1213                         os << "\n\\" << t.cs() << " default \n";
1214                 }
1215
1216                 else if (is_known(t.cs(), known_latex_commands)) {
1217                         context.check_layout(os);
1218                         begin_inset(os, "LatexCommand ");
1219                         os << '\\' << t.cs();
1220                         os << p.getOpt();
1221                         os << p.getOpt();
1222                         os << '{' << p.verbatim_item() << "}\n";
1223                         end_inset(os);
1224                 }
1225
1226                 else if (is_known(t.cs(), known_quotes)) {
1227                         char const ** where = is_known(t.cs(), known_quotes);
1228                         context.check_layout(os);
1229                         begin_inset(os, "Quotes ");
1230                         os << known_coded_quotes[where - known_quotes];
1231                         end_inset(os);
1232                         // LyX adds {} after the quote, so we have to eat
1233                         // spaces here if there are any before a possible
1234                         // {} pair.
1235                         eat_whitespace(p, os, context, false);
1236                         skip_braces(p);
1237                 }
1238
1239                 else if (is_known(t.cs(), known_sizes)) {
1240                         char const ** where = is_known(t.cs(), known_sizes);
1241                         context.check_layout(os);
1242                         os << "\n\\size " << known_coded_sizes[where - known_sizes] << "\n";
1243                         eat_whitespace(p, os, context, false);
1244                 }
1245
1246                 else if (t.cs() == "LyX" || t.cs() == "TeX"
1247                          || t.cs() == "LaTeX") {
1248                         context.check_layout(os);
1249                         os << t.cs();
1250                         skip_braces(p); // eat {}
1251                 }
1252
1253                 else if (t.cs() == "LaTeXe") {
1254                         context.check_layout(os);
1255                         os << "LaTeX2e";
1256                         skip_braces(p); // eat {}
1257                 }
1258
1259                 else if (t.cs() == "ldots") {
1260                         context.check_layout(os);
1261                         skip_braces(p);
1262                         os << "\\SpecialChar \\ldots{}\n";
1263                 }
1264
1265                 else if (t.cs() == "lyxarrow") {
1266                         context.check_layout(os);
1267                         os << "\\SpecialChar \\menuseparator\n";
1268                         skip_braces(p);
1269                 }
1270
1271                 else if (t.cs() == "textcompwordmark") {
1272                         context.check_layout(os);
1273                         os << "\\SpecialChar \\textcompwordmark{}\n";
1274                         skip_braces(p);
1275                 }
1276
1277                 else if (t.cs() == "@" && p.next_token().asInput() == ".") {
1278                         context.check_layout(os);
1279                         os << "\\SpecialChar \\@.\n";
1280                         p.get_token();
1281                 }
1282
1283                 else if (t.cs() == "-") {
1284                         context.check_layout(os);
1285                         os << "\\SpecialChar \\-\n";
1286                 }
1287
1288                 else if (t.cs() == "textasciitilde") {
1289                         context.check_layout(os);
1290                         os << '~';
1291                         skip_braces(p);
1292                 }
1293
1294                 else if (t.cs() == "textasciicircum") {
1295                         context.check_layout(os);
1296                         os << '^';
1297                         skip_braces(p);
1298                 }
1299
1300                 else if (t.cs() == "textbackslash") {
1301                         context.check_layout(os);
1302                         os << "\n\\backslash \n";
1303                         skip_braces(p);
1304                 }
1305
1306                 else if (t.cs() == "_" || t.cs() == "&" || t.cs() == "#"
1307                             || t.cs() == "$" || t.cs() == "{" || t.cs() == "}"
1308                             || t.cs() == "%") {
1309                         context.check_layout(os);
1310                         os << t.cs();
1311                 }
1312
1313                 else if (t.cs() == "char") {
1314                         context.check_layout(os);
1315                         if (p.next_token().character() == '`') {
1316                                 p.get_token();
1317                                 if (p.next_token().cs() == "\"") {
1318                                         p.get_token();
1319                                         os << '"';
1320                                         skip_braces(p);
1321                                 } else {
1322                                         handle_ert(os, "\\char`", context);
1323                                 }
1324                         } else {
1325                                 handle_ert(os, "\\char", context);
1326                         }
1327                 }
1328
1329                 else if (t.cs() == "\"") {
1330                         context.check_layout(os);
1331                         string const name = p.verbatim_item();
1332                              if (name == "a") os << 'ä';
1333                         else if (name == "o") os << 'ö';
1334                         else if (name == "u") os << 'ü';
1335                         else if (name == "A") os << 'Ä';
1336                         else if (name == "O") os << 'Ö';
1337                         else if (name == "U") os << 'Ü';
1338                         else handle_ert(os, "\"{" + name + "}", context);
1339                 }
1340
1341                 // Problem: \= creates a tabstop inside the tabbing environment
1342                 // and else an accent. In the latter case we really would want
1343                 // \={o} instead of \= o.
1344                 else if (t.cs() == "=" && (flags & FLAG_TABBING))
1345                         handle_ert(os, t.asInput(), context);
1346
1347                 else if (t.cs() == "H" || t.cs() == "c" || t.cs() == "^" || t.cs() == "'"
1348                       || t.cs() == "~" || t.cs() == "." || t.cs() == "=") {
1349                         // we need the trim as the LyX parser chokes on such spaces
1350                         context.check_layout(os);
1351                         os << "\n\\i \\" << t.cs() << "{"
1352                            << trim(parse_text(p, FLAG_ITEM, outer, context), " ") << "}\n";
1353                 }
1354
1355                 else if (t.cs() == "ss") {
1356                         context.check_layout(os);
1357                         os << "ß";
1358                 }
1359
1360                 else if (t.cs() == "i" || t.cs() == "j") {
1361                         context.check_layout(os);
1362                         os << "\\" << t.cs() << ' ';
1363                 }
1364
1365                 else if (t.cs() == "\\") {
1366                         context.check_layout(os);
1367                         string const next = p.next_token().asInput();
1368                         if (next == "[")
1369                                 handle_ert(os, "\\\\" + p.getOpt(), context);
1370                         else if (next == "*") {
1371                                 p.get_token();
1372                                 handle_ert(os, "\\\\*" + p.getOpt(), context);
1373                         }
1374                         else {
1375                                 os << "\n\\newline \n";
1376                         }
1377                 }
1378
1379                 else if (t.cs() == "input" || t.cs() == "include"
1380                          || t.cs() == "verbatiminput") {
1381                         string name = '\\' + t.cs();
1382                         if (t.cs() == "verbatiminput"
1383                             && p.next_token().asInput() == "*")
1384                                 name += p.get_token().asInput();
1385                         context.check_layout(os);
1386                         begin_inset(os, "Include ");
1387                         string filename(p.getArg('{', '}'));
1388                         string lyxname(lyx::support::ChangeExtension(filename, ".lyx"));
1389                         if (tex2lyx(filename, lyxname)) {
1390                                 os << name << '{' << lyxname << "}\n";
1391                         } else {
1392                                 os << name << '{' << filename << "}\n";
1393                         }
1394                         os << "preview false\n";
1395                         end_inset(os);
1396                 }
1397
1398                 else if (t.cs() == "fancyhead") {
1399                         context.check_layout(os);
1400                         ostringstream ss;
1401                         ss << "\\fancyhead";
1402                         ss << p.getOpt();
1403                         ss << '{' << p.verbatim_item() << "}\n";
1404                         handle_ert(os, ss.str(), context);
1405                 }
1406
1407                 else if (t.cs() == "bibliographystyle") {
1408                         // store new bibliographystyle
1409                         bibliographystyle = p.verbatim_item();
1410                         // output new bibliographystyle.
1411                         // This is only necessary if used in some other macro than \bibliography.
1412                         handle_ert(os, "\\bibliographystyle{" + bibliographystyle + "}", context);
1413                 }
1414
1415                 else if (t.cs() == "bibliography") {
1416                         context.check_layout(os);
1417                         begin_inset(os, "LatexCommand ");
1418                         os << "\\bibtex";
1419                         // Do we have a bibliographystyle set?
1420                         if (!bibliographystyle.empty()) {
1421                                 os << '[' << bibliographystyle << ']';
1422                         }
1423                         os << '{' << p.verbatim_item() << "}\n";
1424                         end_inset(os);
1425                 }
1426
1427                 else if (t.cs() == "parbox")
1428                         parse_box(p, os, FLAG_ITEM, outer, context, true);
1429
1430                 else if (t.cs() == "smallskip" ||
1431                          t.cs() == "medskip" ||
1432                          t.cs() == "bigskip" ||
1433                          t.cs() == "vfill") {
1434                         context.check_layout(os);
1435                         begin_inset(os, "VSpace ");
1436                         os << t.cs();
1437                         end_inset(os);
1438                         skip_braces(p);
1439                 }
1440
1441                 else if (t.cs() == "vspace") {
1442                         bool starred = false;
1443                         if (p.next_token().asInput() == "*") {
1444                                 p.get_token();
1445                                 starred = true;
1446                         }
1447                         string const length = p.verbatim_item();
1448                         string unit;
1449                         string valstring;
1450                         bool valid = splitLatexLength(length, valstring, unit);
1451                         bool known_vspace = false;
1452                         bool known_unit = false;
1453                         double value;
1454                         if (valid) {
1455                                 istringstream iss(valstring);
1456                                 iss >> value;
1457                                 if (value == 1.0) {
1458                                         if (unit == "\\smallskipamount") {
1459                                                 unit = "smallskip";
1460                                                 known_vspace = true;
1461                                         } else if (unit == "\\medskipamount") {
1462                                                 unit = "medskip";
1463                                                 known_vspace = true;
1464                                         } else if (unit == "\\bigskipamount") {
1465                                                 unit = "bigskip";
1466                                                 known_vspace = true;
1467                                         } else if (unit == "\\fill") {
1468                                                 unit = "vfill";
1469                                                 known_vspace = true;
1470                                         }
1471                                 }
1472                                 if (!known_vspace) {
1473                                         switch (unitFromString(unit)) {
1474                                         case LyXLength::SP:
1475                                         case LyXLength::PT:
1476                                         case LyXLength::BP:
1477                                         case LyXLength::DD:
1478                                         case LyXLength::MM:
1479                                         case LyXLength::PC:
1480                                         case LyXLength::CC:
1481                                         case LyXLength::CM:
1482                                         case LyXLength::IN:
1483                                         case LyXLength::EX:
1484                                         case LyXLength::EM:
1485                                         case LyXLength::MU:
1486                                                 known_unit = true;
1487                                                 break;
1488                                         default:
1489                                                 break;
1490                                         }
1491                                 }
1492                         }
1493
1494                         if (known_unit || known_vspace) {
1495                                 // Literal length or known variable
1496                                 context.check_layout(os);
1497                                 begin_inset(os, "VSpace ");
1498                                 if (known_unit)
1499                                         os << value;
1500                                 os << unit;
1501                                 if (starred)
1502                                         os << '*';
1503                                 end_inset(os);
1504                         } else {
1505                                 // LyX can't handle other length variables in Inset VSpace
1506                                 string name = t.asInput();
1507                                 if (starred)
1508                                         name += '*';
1509                                 if (valid) {
1510                                         if (value == 1.0)
1511                                                 handle_ert(os, name + '{' + unit + '}', context);
1512                                         else if (value == -1.0)
1513                                                 handle_ert(os, name + "{-" + unit + '}', context);
1514                                         else
1515                                                 handle_ert(os, name + '{' + valstring + unit + '}', context);
1516                                 } else
1517                                         handle_ert(os, name + '{' + length + '}', context);
1518                         }
1519                 }
1520
1521                 else {
1522                         //cerr << "#: " << t << " mode: " << mode << endl;
1523                         // heuristic: read up to next non-nested space
1524                         /*
1525                         string s = t.asInput();
1526                         string z = p.verbatim_item();
1527                         while (p.good() && z != " " && z.size()) {
1528                                 //cerr << "read: " << z << endl;
1529                                 s += z;
1530                                 z = p.verbatim_item();
1531                         }
1532                         cerr << "found ERT: " << s << endl;
1533                         handle_ert(os, s + ' ', context);
1534                         */
1535                         string name = t.asInput();
1536                         if (p.next_token().asInput() == "*") {
1537                                 // Starred commands like \vspace*{}
1538                                 p.get_token();                          // Eat '*'
1539                                 name += '*';
1540                         }
1541                         if (! parse_command(name, p, os, outer, context))
1542                                 handle_ert(os, name, context);
1543                 }
1544
1545                 if (flags & FLAG_LEAVE) {
1546                         flags &= ~FLAG_LEAVE;
1547                         break;
1548                 }
1549         }
1550 }
1551
1552
1553 // }])