src/paragraph_funcs.C

   1 /**
   2  * \file paragraph_funcs.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Lars Gullik Bjønnes
   7  *
   8  * Full author contact details are available in file CREDITS
   9  */
  10
  11 #include <config.h>
  12
  13 #include "paragraph_funcs.h"
  14 #include "paragraph_pimpl.h"
  15 #include "buffer.h"
  16 #include "ParagraphParameters.h"
  17 #include "lyxtextclasslist.h"
  18 #include "debug.h"
  19 #include "gettext.h"
  20 #include "language.h"
  21 #include "encoding.h"
  22 #include "lyxrc.h"
  23 #include "lyxlex.h"
  24 #include "support/BoostFormat.h"
  25 #include "factory.h"
  26 #include "support/lstrings.h"
  27 #include "insets/insetoptarg.h"
  28 #include "insets/insetcommandparams.h"
  29 #include "insets/insetbibitem.h"
  30 #include "insets/insetspecialchar.h"
  31 #include "insets/insetlatexaccent.h"
  32 #include "insets/insettabular.h"
  33 #include "insets/insethfill.h"
  34 #include "insets/inseterror.h"
  35 #include "insets/insetnewline.h"
  36
  37 extern string bibitemWidest(Buffer const *);
  38
  39 using lyx::pos_type;
  40 //using lyx::layout_type;
  41 using std::endl;
  42 using std::ostream;
  43
  44 void breakParagraph(BufferParams const & bparams,
  45                     ParagraphList & paragraphs,
  46                     ParagraphList::iterator par,
  47                     pos_type pos,
  48                     int flag)
  49 {
  50         // create a new paragraph, and insert into the list
  51         ParagraphList::iterator tmp = paragraphs.insert(boost::next(par),
  52                                                         new Paragraph);
  53
  54         // without doing that we get a crash when typing <Return> at the
  55         // end of a paragraph
  56         tmp->layout(bparams.getLyXTextClass().defaultLayout());
  57         // remember to set the inset_owner
  58         tmp->setInsetOwner(par->inInset());
  59
  60         if (bparams.tracking_changes)
  61                 tmp->trackChanges();
  62
  63         // this is an idea for a more userfriendly layout handling, I will
  64         // see what the users say
  65
  66         // layout stays the same with latex-environments
  67         if (flag) {
  68                 tmp->layout(par->layout());
  69                 tmp->setLabelWidthString(par->params().labelWidthString());
  70         }
  71
  72         bool const isempty = (par->layout()->keepempty && par->empty());
  73
  74         if (!isempty && (par->size() > pos || par->empty() || flag == 2)) {
  75                 tmp->layout(par->layout());
  76                 tmp->params().align(par->params().align());
  77                 tmp->setLabelWidthString(par->params().labelWidthString());
  78
  79                 tmp->params().lineBottom(par->params().lineBottom());
  80                 par->params().lineBottom(false);
  81                 tmp->params().pagebreakBottom(par->params().pagebreakBottom());
  82                 par->params().pagebreakBottom(false);
  83                 tmp->params().spaceBottom(par->params().spaceBottom());
  84                 par->params().spaceBottom(VSpace(VSpace::NONE));
  85
  86                 tmp->params().depth(par->params().depth());
  87                 tmp->params().noindent(par->params().noindent());
  88
  89                 // copy everything behind the break-position
  90                 // to the new paragraph
  91
  92 #ifdef WITH_WARNINGS
  93 #warning this seems wrong
  94 #endif
  95                 /* FIXME: if !keepempty, empty() == true, then we reach
  96                  * here with size() == 0. So pos_end becomes - 1. Why
  97                  * doesn't this cause problems ???
  98                  */
  99                 pos_type pos_end = par->size() - 1;
 100                 pos_type i = pos;
 101                 pos_type j = pos;
 102
 103                 for (; i <= pos_end; ++i) {
 104                         Change::Type change(par->lookupChange(i));
 105                         par->cutIntoMinibuffer(bparams, i);
 106                         if (tmp->insertFromMinibuffer(j - pos)) {
 107                                 tmp->setChange(j - pos, change);
 108                                 ++j;
 109                         }
 110                 }
 111                 for (i = pos_end; i >= pos; --i) {
 112                         par->eraseIntern(i);
 113                 }
 114         }
 115
 116         if (pos)
 117                 return;
 118
 119         tmp->params().lineTop(par->params().lineTop());
 120         tmp->params().pagebreakTop(par->params().pagebreakTop());
 121         tmp->params().spaceTop(par->params().spaceTop());
 122         par->params().clear();
 123
 124         par->layout(bparams.getLyXTextClass().defaultLayout());
 125
 126         // layout stays the same with latex-environments
 127         if (flag) {
 128                 par->layout(tmp->layout());
 129                 par->setLabelWidthString(tmp->params().labelWidthString());
 130                 par->params().depth(tmp->params().depth());
 131         }
 132
 133         // subtle, but needed to get empty pars working right
 134         if (bparams.tracking_changes) {
 135                 if (!par->size()) {
 136                         par->cleanChanges();
 137                 } else if (!tmp->size()) {
 138                         tmp->cleanChanges();
 139                 }
 140         }
 141 }
 142
 143
 144 void breakParagraphConservative(BufferParams const & bparams,
 145                                 ParagraphList & paragraphs,
 146                                 ParagraphList::iterator par,
 147                                 pos_type pos)
 148 {
 149         // create a new paragraph
 150         ParagraphList::iterator tmp = paragraphs.insert(boost::next(par),
 151                                                         new Paragraph);
 152         tmp->makeSameLayout(&*par);
 153
 154         // When can pos > Last()?
 155         // I guess pos == Last() is possible.
 156         if (par->size() > pos) {
 157                 // copy everything behind the break-position to the new
 158                 // paragraph
 159                 pos_type pos_end = par->size() - 1;
 160
 161                 for (pos_type i = pos, j = pos; i <= pos_end; ++i) {
 162                         par->cutIntoMinibuffer(bparams, i);
 163                         if (tmp->insertFromMinibuffer(j - pos))
 164                                 ++j;
 165                 }
 166
 167                 for (pos_type k = pos_end; k >= pos; --k) {
 168                         par->erase(k);
 169                 }
 170         }
 171 }
 172
 173
 174 void mergeParagraph(BufferParams const & bparams,
 175                     ParagraphList & paragraphs,
 176                     ParagraphList::iterator par)
 177 {
 178         ParagraphList::iterator the_next = boost::next(par);
 179
 180         // first the DTP-stuff
 181         par->params().lineBottom(the_next->params().lineBottom());
 182         par->params().spaceBottom(the_next->params().spaceBottom());
 183         par->params().pagebreakBottom(the_next->params().pagebreakBottom());
 184
 185         pos_type pos_end = the_next->size() - 1;
 186         pos_type pos_insert = par->size();
 187
 188         // ok, now copy the paragraph
 189         for (pos_type i = 0, j = 0; i <= pos_end; ++i) {
 190                 the_next->cutIntoMinibuffer(bparams, i);
 191                 if (par->insertFromMinibuffer(pos_insert + j))
 192                         ++j;
 193         }
 194
 195         paragraphs.erase(the_next);
 196 }
 197
 198
 199 Paragraph * depthHook(Paragraph * par, Paragraph::depth_type depth)
 200 {
 201         Paragraph * newpar = par;
 202
 203         do {
 204                 newpar = newpar->previous();
 205         } while (newpar && newpar->getDepth() > depth);
 206
 207         if (!newpar) {
 208                 if (par->previous() || par->getDepth())
 209                         lyxerr << "ERROR (Paragraph::DepthHook): "
 210                                 "no hook." << endl;
 211                 newpar = par;
 212         }
 213
 214         return newpar;
 215 }
 216
 217
 218 Paragraph * outerHook(Paragraph * par)
 219 {
 220         if (!par->getDepth())
 221                 return 0;
 222         return depthHook(par, Paragraph::depth_type(par->getDepth() - 1));
 223 }
 224
 225
 226 bool isFirstInSequence(Paragraph * par)
 227 {
 228         Paragraph const * dhook = depthHook(par, par->getDepth());
 229         return (dhook == par
 230                 || dhook->layout() != par->layout()
 231                 || dhook->getDepth() != par->getDepth());
 232 }
 233
 234
 235 int getEndLabel(Paragraph * p)
 236 {
 237         Paragraph * par = p;
 238         Paragraph::depth_type par_depth = p->getDepth();
 239         while (par) {
 240                 LyXLayout_ptr const & layout = par->layout();
 241                 int const endlabeltype = layout->endlabeltype;
 242
 243                 if (endlabeltype != END_LABEL_NO_LABEL) {
 244                         if (!p->next())
 245                                 return endlabeltype;
 246
 247                         Paragraph::depth_type const next_depth = p->next()->getDepth();
 248                         if (par_depth > next_depth ||
 249                             (par_depth == next_depth
 250                              && layout != p->next()->layout()))
 251                                 return endlabeltype;
 252                         break;
 253                 }
 254                 if (par_depth == 0)
 255                         break;
 256                 par = outerHook(par);
 257                 if (par)
 258                         par_depth = par->getDepth();
 259         }
 260         return END_LABEL_NO_LABEL;
 261 }
 262
 263
 264 namespace {
 265
 266 ParagraphList::iterator
 267 TeXEnvironment(Buffer const * buf,
 268                ParagraphList const & paragraphs,
 269                ParagraphList::iterator pit,
 270                ostream & os, TexRow & texrow);
 271
 272 ParagraphList::iterator
 273 TeXOnePar(Buffer const * buf,
 274           ParagraphList const & paragraphs,
 275           ParagraphList::iterator pit,
 276           ostream & os, TexRow & texrow,
 277           bool moving_arg);
 278
 279
 280 ParagraphList::iterator
 281 TeXDeeper(Buffer const * buf,
 282           ParagraphList const & paragraphs,
 283           ParagraphList::iterator pit,
 284           ostream & os, TexRow & texrow)
 285 {
 286         lyxerr[Debug::LATEX] << "TeXDeeper...     " << &*pit << endl;
 287         ParagraphList::iterator par = pit;
 288
 289         while (par != paragraphs.end()&& par->params().depth() == pit->params().depth()) {
 290                 if (par->layout()->isEnvironment()) {
 291                         par = TeXEnvironment(buf, paragraphs, par,
 292                                                   os, texrow);
 293                 } else {
 294                         par = TeXOnePar(buf, paragraphs, par,
 295                                              os, texrow, false);
 296                 }
 297         }
 298         lyxerr[Debug::LATEX] << "TeXDeeper...done " << &*par << endl;
 299
 300         return par;
 301 }
 302
 303
 304 ParagraphList::iterator
 305 TeXEnvironment(Buffer const * buf,
 306                ParagraphList const & paragraphs,
 307                ParagraphList::iterator pit,
 308                ostream & os, TexRow & texrow)
 309 {
 310         lyxerr[Debug::LATEX] << "TeXEnvironment...     " << &*pit << endl;
 311
 312         BufferParams const & bparams = buf->params;
 313
 314         LyXLayout_ptr const & style = pit->layout();
 315
 316         Language const * language = pit->getParLanguage(bparams);
 317         Language const * doc_language = bparams.language;
 318         Language const * previous_language =
 319                 (pit != paragraphs.begin())
 320                 ? boost::prior(pit)->getParLanguage(bparams)
 321                 : doc_language;
 322         if (language->babel() != previous_language->babel()) {
 323
 324                 if (!lyxrc.language_command_end.empty() &&
 325                     previous_language->babel() != doc_language->babel()) {
 326                         os << subst(lyxrc.language_command_end, "$$lang",
 327                                     previous_language->babel())
 328                            << endl;
 329                         texrow.newline();
 330                 }
 331
 332                 if (lyxrc.language_command_end.empty() ||
 333                     language->babel() != doc_language->babel()) {
 334                         os << subst(lyxrc.language_command_begin, "$$lang",
 335                                     language->babel())
 336                            << endl;
 337                         texrow.newline();
 338                 }
 339         }
 340
 341         bool leftindent_open = false;
 342         if (!pit->params().leftIndent().zero()) {
 343                 os << "\\begin{LyXParagraphLeftIndent}{" <<
 344                         pit->params().leftIndent().asLatexString() << "}\n";
 345                 texrow.newline();
 346                 leftindent_open = true;
 347         }
 348
 349         if (style->isEnvironment()) {
 350                 if (style->latextype == LATEX_LIST_ENVIRONMENT) {
 351                         os << "\\begin{" << style->latexname() << "}{"
 352                            << pit->params().labelWidthString() << "}\n";
 353                 } else if (style->labeltype == LABEL_BIBLIO) {
 354                         // ale970405
 355                         os << "\\begin{" << style->latexname() << "}{"
 356                            <<  bibitemWidest(buf)
 357                            << "}\n";
 358                 } else if (style->latextype == LATEX_ITEM_ENVIRONMENT) {
 359                         os << "\\begin{" << style->latexname() << '}'
 360                            << style->latexparam() << '\n';
 361                 } else
 362                         os << "\\begin{" << style->latexname() << '}'
 363                            << style->latexparam() << '\n';
 364                 texrow.newline();
 365         }
 366         ParagraphList::iterator par = pit;
 367         do {
 368                 par = TeXOnePar(buf, paragraphs, par, os, texrow, false);
 369
 370                 if (par != paragraphs.end()&& par->params().depth() > pit->params().depth()) {
 371                             if (par->layout()->isParagraph()) {
 372
 373                             // Thinko!
 374                             // How to handle this? (Lgb)
 375                             //&& !suffixIs(os, "\n\n")
 376                                     //) {
 377                                 // There should be at least one '\n' already
 378                                 // but we need there to be two for Standard
 379                                 // paragraphs that are depth-increment'ed to be
 380                                 // output correctly.  However, tables can
 381                                 // also be paragraphs so don't adjust them.
 382                                 // ARRae
 383                                 // Thinkee:
 384                                 // Will it ever harm to have one '\n' too
 385                                 // many? i.e. that we sometimes will have
 386                                 // three in a row. (Lgb)
 387                                 os << '\n';
 388                                 texrow.newline();
 389                         }
 390                         par = TeXDeeper(buf, paragraphs, par, os, texrow);
 391                 }
 392         } while (par != paragraphs.end()
 393                  && par->layout() == pit->layout()
 394                  && par->params().depth() == pit->params().depth()
 395                  && par->params().leftIndent() == pit->params().leftIndent());
 396
 397         if (style->isEnvironment()) {
 398                 os << "\\end{" << style->latexname() << "}\n";
 399                 texrow.newline();
 400         }
 401
 402         if (leftindent_open) {
 403                 os << "\\end{LyXParagraphLeftIndent}\n";
 404                 texrow.newline();
 405         }
 406
 407         lyxerr[Debug::LATEX] << "TeXEnvironment...done " << &*par << endl;
 408         return par;  // ale970302
 409 }
 410
 411
 412 InsetOptArg * optArgInset(Paragraph const & par)
 413 {
 414         // Find the entry.
 415         InsetList::iterator it = par.insetlist.begin();
 416         InsetList::iterator end = par.insetlist.end();
 417         for (; it != end; ++it) {
 418                 Inset * ins = it.getInset();
 419                 if (ins->lyxCode() == Inset::OPTARG_CODE) {
 420                         return static_cast<InsetOptArg *>(ins);
 421                 }
 422         }
 423         return 0;
 424 }
 425
 426
 427 ParagraphList::iterator
 428 TeXOnePar(Buffer const * buf,
 429           ParagraphList const & paragraphs,
 430           ParagraphList::iterator pit,
 431           ostream & os, TexRow & texrow,
 432           bool moving_arg)
 433 {
 434         lyxerr[Debug::LATEX] << "TeXOnePar...     " << &*pit << endl;
 435         BufferParams const & bparams = buf->params;
 436
 437         Inset const * in = pit->inInset();
 438         bool further_blank_line = false;
 439         LyXLayout_ptr style;
 440
 441         // well we have to check if we are in an inset with unlimited
 442         // lenght (all in one row) if that is true then we don't allow
 443         // any special options in the paragraph and also we don't allow
 444         // any environment other then "Standard" to be valid!
 445         if ((in == 0) || !in->forceDefaultParagraphs(in)) {
 446                 style = pit->layout();
 447
 448                 if (pit->params().startOfAppendix()) {
 449                         os << "\\appendix\n";
 450                         texrow.newline();
 451                 }
 452
 453                 if (!pit->params().spacing().isDefault()
 454                         && (pit == paragraphs.begin() || !boost::prior(pit)->hasSameLayout(&*pit))) {
 455                         os << pit->params().spacing().writeEnvirBegin() << '\n';
 456                         texrow.newline();
 457                 }
 458
 459                 if (style->isCommand()) {
 460                         os << '\n';
 461                         texrow.newline();
 462                 }
 463
 464                 if (pit->params().pagebreakTop()) {
 465                         os << "\\newpage";
 466                         further_blank_line = true;
 467                 }
 468                 if (pit->params().spaceTop().kind() != VSpace::NONE) {
 469                         os << pit->params().spaceTop().asLatexCommand(bparams);
 470                         further_blank_line = true;
 471                 }
 472
 473                 if (pit->params().lineTop()) {
 474                         os << "\\lyxline{\\" << pit->getFont(bparams, 0).latexSize() << '}'
 475                            << "\\vspace{-1\\parskip}";
 476                         further_blank_line = true;
 477                 }
 478
 479                 if (further_blank_line) {
 480                         os << '\n';
 481                         texrow.newline();
 482                 }
 483         } else {
 484                 style = bparams.getLyXTextClass().defaultLayout();
 485         }
 486
 487         Language const * language = pit->getParLanguage(bparams);
 488         Language const * doc_language = bparams.language;
 489         Language const * previous_language =
 490                 (pit != paragraphs.begin())
 491                 ? boost::prior(pit)->getParLanguage(bparams)
 492                 : doc_language;
 493
 494         if (language->babel() != previous_language->babel()
 495             // check if we already put language command in TeXEnvironment()
 496             && !(style->isEnvironment()
 497                  && (pit == paragraphs.begin() ||
 498                      (boost::prior(pit)->layout() != pit->layout() &&
 499                       boost::prior(pit)->getDepth() <= pit->getDepth())
 500                      || boost::prior(pit)->getDepth() < pit->getDepth())))
 501         {
 502                 if (!lyxrc.language_command_end.empty() &&
 503                     previous_language->babel() != doc_language->babel())
 504                 {
 505                         os << subst(lyxrc.language_command_end, "$$lang",
 506                                     previous_language->babel())
 507                            << endl;
 508                         texrow.newline();
 509                 }
 510
 511                 if (lyxrc.language_command_end.empty() ||
 512                     language->babel() != doc_language->babel())
 513                 {
 514                         os << subst(lyxrc.language_command_begin, "$$lang",
 515                                     language->babel())
 516                            << endl;
 517                         texrow.newline();
 518                 }
 519         }
 520
 521         if (bparams.inputenc == "auto" &&
 522             language->encoding() != previous_language->encoding()) {
 523                 os << "\\inputencoding{"
 524                    << language->encoding()->LatexName()
 525                    << "}\n";
 526                 texrow.newline();
 527         }
 528
 529         switch (style->latextype) {
 530         case LATEX_COMMAND:
 531                 os << '\\' << style->latexname();
 532
 533                 // Separate handling of optional argument inset.
 534                 if (style->optionalargs == 1) {
 535                         InsetOptArg * it = optArgInset(*pit);
 536                         if (it)
 537                                 it->latexOptional(buf, os, false, false);
 538                 }
 539                 else
 540                         os << style->latexparam();
 541                 break;
 542         case LATEX_ITEM_ENVIRONMENT:
 543         case LATEX_LIST_ENVIRONMENT:
 544                 os << "\\item ";
 545                 break;
 546         case LATEX_BIB_ENVIRONMENT:
 547                 // ignore this, the inset will write itself
 548                 break;
 549         default:
 550                 break;
 551         }
 552
 553         bool need_par = pit->simpleTeXOnePar(buf, bparams, os, texrow, moving_arg);
 554
 555         // Make sure that \\par is done with the font of the last
 556         // character if this has another size as the default.
 557         // This is necessary because LaTeX (and LyX on the screen)
 558         // calculates the space between the baselines according
 559         // to this font. (Matthias)
 560         //
 561         // Is this really needed ? (Dekel)
 562         // We do not need to use to change the font for the last paragraph
 563         // or for a command.
 564         LyXFont const font =
 565                 (pit->empty()
 566                  ? pit->getLayoutFont(bparams) : pit->getFont(bparams, pit->size() - 1));
 567
 568         bool is_command = style->isCommand();
 569
 570         if (style->resfont.size() != font.size()
 571             && boost::next(pit) != paragraphs.end()
 572             && !is_command) {
 573                 if (!need_par)
 574                         os << '{';
 575                 os << "\\" << font.latexSize() << " \\par}";
 576         } else if (need_par) {
 577                 os << "\\par}";
 578         } else if (is_command)
 579                 os << '}';
 580
 581         switch (style->latextype) {
 582         case LATEX_ITEM_ENVIRONMENT:
 583         case LATEX_LIST_ENVIRONMENT:
 584                 if (boost::next(pit) != paragraphs.end()
 585                     && (pit->params().depth() < boost::next(pit)->params().depth())) {
 586                         os << '\n';
 587                         texrow.newline();
 588                 }
 589                 break;
 590         case LATEX_ENVIRONMENT:
 591                 // if its the last paragraph of the current environment
 592                 // skip it otherwise fall through
 593                 if (boost::next(pit) != paragraphs.end()
 594                     && (boost::next(pit)->layout() != pit->layout()
 595                         || boost::next(pit)->params().depth() != pit->params().depth()))
 596                         break;
 597                 // fall through possible
 598         default:
 599                 // we don't need it for the last paragraph!!!
 600                 if (boost::next(pit) != paragraphs.end()) {
 601                         os << '\n';
 602                         texrow.newline();
 603                 }
 604         }
 605
 606         if ((in == 0) || !in->forceDefaultParagraphs(in)) {
 607                 further_blank_line = false;
 608                 if (pit->params().lineBottom()) {
 609                         os << "\\lyxline{\\" << font.latexSize() << '}';
 610                         further_blank_line = true;
 611                 }
 612
 613                 if (pit->params().spaceBottom().kind() != VSpace::NONE) {
 614                         os << pit->params().spaceBottom().asLatexCommand(bparams);
 615                         further_blank_line = true;
 616                 }
 617
 618                 if (pit->params().pagebreakBottom()) {
 619                         os << "\\newpage";
 620                         further_blank_line = true;
 621                 }
 622
 623                 if (further_blank_line) {
 624                         os << '\n';
 625                         texrow.newline();
 626                 }
 627
 628                 if (!pit->params().spacing().isDefault()
 629                         && (boost::next(pit) == paragraphs.end()|| !boost::next(pit)->hasSameLayout(&*pit))) {
 630                         os << pit->params().spacing().writeEnvirEnd() << '\n';
 631                         texrow.newline();
 632                 }
 633         }
 634
 635         // we don't need it for the last paragraph!!!
 636         if (boost::next(pit) != paragraphs.end()) {
 637                 os << '\n';
 638                 texrow.newline();
 639         } else {
 640                 // Since \selectlanguage write the language to the aux file,
 641                 // we need to reset the language at the end of footnote or
 642                 // float.
 643
 644                 if (language->babel() != doc_language->babel()) {
 645                         if (lyxrc.language_command_end.empty())
 646                                 os << subst(lyxrc.language_command_begin,
 647                                             "$$lang",
 648                                             doc_language->babel())
 649                                    << endl;
 650                         else
 651                                 os << subst(lyxrc.language_command_end,
 652                                             "$$lang",
 653                                             language->babel())
 654                                    << endl;
 655                         texrow.newline();
 656                 }
 657         }
 658
 659         lyxerr[Debug::LATEX] << "TeXOnePar...done " << &*boost::next(pit) << endl;
 660         return ++pit;
 661 }
 662
 663 } // anon namespace
 664
 665
 666 //
 667 // LaTeX all paragraphs from par to endpar, if endpar == 0 then to the end
 668 //
 669 void latexParagraphs(Buffer const * buf,
 670                      ParagraphList const & paragraphs,
 671                      ParagraphList::iterator par,
 672                      ParagraphList::iterator endpar,
 673                      ostream & ofs,
 674                      TexRow & texrow,
 675                      bool moving_arg)
 676 {
 677         bool was_title = false;
 678         bool already_title = false;
 679         LyXTextClass const & tclass = buf->params.getLyXTextClass();
 680
 681         // if only_body
 682         while (par != endpar) {
 683                 Inset * in = par->inInset();
 684                 // well we have to check if we are in an inset with unlimited
 685                 // length (all in one row) if that is true then we don't allow
 686                 // any special options in the paragraph and also we don't allow
 687                 // any environment other then "Standard" to be valid!
 688                 if ((in == 0) || !in->forceDefaultParagraphs(in)) {
 689                         LyXLayout_ptr const & layout = par->layout();
 690
 691                         if (layout->intitle) {
 692                                 if (already_title) {
 693                                         lyxerr <<"Error in latexParagraphs: You"
 694                                                 " should not mix title layouts"
 695                                                 " with normal ones." << endl;
 696                                 } else if (!was_title) {
 697                                         was_title = true;
 698                                         if (tclass.titletype() == TITLE_ENVIRONMENT) {
 699                                                 ofs << "\\begin{"
 700                                                     << tclass.titlename()
 701                                                     << "}\n";
 702                                                 texrow.newline();
 703                                         }
 704                                 }
 705                         } else if (was_title && !already_title) {
 706                                 if (tclass.titletype() == TITLE_ENVIRONMENT) {
 707                                         ofs << "\\end{" << tclass.titlename()
 708                                             << "}\n";
 709                                 }
 710                                 else {
 711                                         ofs << "\\" << tclass.titlename()
 712                                             << "\n";
 713                                 }
 714                                 texrow.newline();
 715                                 already_title = true;
 716                                 was_title = false;
 717                         }
 718
 719                         if (layout->isEnvironment() ||
 720                                 !par->params().leftIndent().zero())
 721                         {
 722                                 par = TeXEnvironment(buf, paragraphs, par, ofs, texrow);
 723                         } else {
 724                                 par = TeXOnePar(buf, paragraphs, par, ofs, texrow, moving_arg);
 725                         }
 726                 } else {
 727                         par = TeXOnePar(buf, paragraphs, par, ofs, texrow, moving_arg);
 728                 }
 729         }
 730         // It might be that we only have a title in this document
 731         if (was_title && !already_title) {
 732                 if (tclass.titletype() == TITLE_ENVIRONMENT) {
 733                         ofs << "\\end{" << tclass.titlename()
 734                             << "}\n";
 735                 }
 736                 else {
 737                         ofs << "\\" << tclass.titlename()
 738                             << "\n";
 739                                 }
 740                 texrow.newline();
 741         }
 742 }
 743
 744
 745 namespace {
 746
 747 int readParToken(Buffer & buf, Paragraph & par, LyXLex & lex, string const & token)
 748 {
 749         static LyXFont font;
 750         static Change change;
 751
 752         BufferParams const & bp = buf.params;
 753
 754         if (token[0] != '\\') {
 755                 string::const_iterator cit = token.begin();
 756                 for (; cit != token.end(); ++cit) {
 757                         par.insertChar(par.size(), (*cit), font, change);
 758                 }
 759         } else if (token == "\\layout") {
 760                 lex.eatLine();
 761                 string layoutname = lex.getString();
 762
 763                 font = LyXFont(LyXFont::ALL_INHERIT, bp.language);
 764                 change = Change();
 765
 766                 LyXTextClass const & tclass = bp.getLyXTextClass();
 767
 768                 if (layoutname.empty()) {
 769                         layoutname = tclass.defaultLayoutName();
 770                 }
 771
 772                 bool hasLayout = tclass.hasLayout(layoutname);
 773
 774                 if (!hasLayout) {
 775                         lyxerr << "Layout '" << layoutname << "' does not"
 776                                << " exist in textclass '" << tclass.name()
 777                                << "'." << endl;
 778                         lyxerr << "Trying to use default layout instead."
 779                                << endl;
 780                         layoutname = tclass.defaultLayoutName();
 781                 }
 782
 783 #ifdef USE_CAPTION
 784                 // The is the compability reading of layout caption.
 785                 if (compare_ascii_no_case(layoutname, "caption") == 0) {
 786                         // We expect that the par we are now working on is
 787                         // really inside a InsetText inside a InsetFloat.
 788                         // We also know that captions can only be
 789                         // one paragraph. (Lgb)
 790
 791                         // We should now read until the next "\layout"
 792                         // is reached.
 793                         // This is probably not good enough, what if the
 794                         // caption is the last par in the document (Lgb)
 795                         istream & ist = lex.getStream();
 796                         stringstream ss;
 797                         string line;
 798                         int begin = 0;
 799                         while (true) {
 800                                 getline(ist, line);
 801                                 if (prefixIs(line, "\\layout")) {
 802                                         lex.pushToken(line);
 803                                         break;
 804                                 }
 805                                 if (prefixIs(line, "\\begin_inset"))
 806                                         ++begin;
 807                                 if (prefixIs(line, "\\end_inset")) {
 808                                         if (begin)
 809                                                 --begin;
 810                                         else {
 811                                                 lex.pushToken(line);
 812                                                 break;
 813                                         }
 814                                 }
 815
 816                                 ss << line << '\n';
 817                         }
 818
 819                         // Now we should have the whole layout in ss
 820                         // we should now be able to give this to the
 821                         // caption inset.
 822                         ss << "\\end_inset\n";
 823
 824                         // This seems like a bug in stringstream.
 825                         // We really should be able to use ss
 826                         // directly. (Lgb)
 827                         istringstream is(ss.str());
 828                         LyXLex tmplex(0, 0);
 829                         tmplex.setStream(is);
 830                         Inset * inset = new InsetCaption;
 831                         inset->Read(this, tmplex);
 832                         par.insertInset(pos, inset, font);
 833                         ++pos;
 834                 } else {
 835 #endif
 836                         par.layout(bp.getLyXTextClass()[layoutname]);
 837
 838                         // Test whether the layout is obsolete.
 839                         LyXLayout_ptr const & layout = par.layout();
 840                         if (!layout->obsoleted_by().empty())
 841                                 par.layout(bp.getLyXTextClass()[layout->obsoleted_by()]);
 842
 843                         par.params().read(lex);
 844 #if USE_CAPTION
 845                 }
 846 #endif
 847
 848         } else if (token == "\\end_inset") {
 849                 lyxerr << "Solitary \\end_inset in line " << lex.getLineNo() << "\n"
 850                        << "Missing \\begin_inset?.\n";
 851                 // Simply ignore this. The insets do not have
 852                 // to read this.
 853                 // But insets should read it, it is a part of
 854                 // the inset isn't it? Lgb.
 855         } else if (token == "\\begin_inset") {
 856                 Inset * i = readInset(lex, buf);
 857                 par.insertInset(par.size(), i, font, change);
 858         } else if (token == "\\family") {
 859                 lex.next();
 860                 font.setLyXFamily(lex.getString());
 861         } else if (token == "\\series") {
 862                 lex.next();
 863                 font.setLyXSeries(lex.getString());
 864         } else if (token == "\\shape") {
 865                 lex.next();
 866                 font.setLyXShape(lex.getString());
 867         } else if (token == "\\size") {
 868                 lex.next();
 869                 font.setLyXSize(lex.getString());
 870         } else if (token == "\\lang") {
 871                 lex.next();
 872                 string const tok = lex.getString();
 873                 Language const * lang = languages.getLanguage(tok);
 874                 if (lang) {
 875                         font.setLanguage(lang);
 876                 } else {
 877                         font.setLanguage(bp.language);
 878                         lex.printError("Unknown language `$$Token'");
 879                 }
 880         } else if (token == "\\numeric") {
 881                 lex.next();
 882                 font.setNumber(font.setLyXMisc(lex.getString()));
 883         } else if (token == "\\emph") {
 884                 lex.next();
 885                 font.setEmph(font.setLyXMisc(lex.getString()));
 886         } else if (token == "\\bar") {
 887                 lex.next();
 888                 string const tok = lex.getString();
 889
 890                 if (tok == "under")
 891                         font.setUnderbar(LyXFont::ON);
 892                 else if (tok == "no")
 893                         font.setUnderbar(LyXFont::OFF);
 894                 else if (tok == "default")
 895                         font.setUnderbar(LyXFont::INHERIT);
 896                 else
 897                         lex.printError("Unknown bar font flag "
 898                                        "`$$Token'");
 899         } else if (token == "\\noun") {
 900                 lex.next();
 901                 font.setNoun(font.setLyXMisc(lex.getString()));
 902         } else if (token == "\\color") {
 903                 lex.next();
 904                 font.setLyXColor(lex.getString());
 905         } else if (token == "\\SpecialChar") {
 906                 LyXLayout_ptr const & layout = par.layout();
 907
 908                 // Insets don't make sense in a free-spacing context! ---Kayvan
 909                 if (layout->free_spacing || par.isFreeSpacing()) {
 910                         if (lex.isOK()) {
 911                                 lex.next();
 912                                 string const next_token = lex.getString();
 913                                 if (next_token == "\\-") {
 914                                         par.insertChar(par.size(), '-', font, change);
 915                                 } else if (next_token == "~") {
 916                                         par.insertChar(par.size(), ' ', font, change);
 917                                 } else {
 918                                         lex.printError("Token `$$Token' "
 919                                                        "is in free space "
 920                                                        "paragraph layout!");
 921                                 }
 922                         }
 923                 } else {
 924                         Inset * inset = new InsetSpecialChar;
 925                         inset->read(&buf, lex);
 926                         par.insertInset(par.size(), inset, font, change);
 927                 }
 928         } else if (token == "\\i") {
 929                 Inset * inset = new InsetLatexAccent;
 930                 inset->read(&buf, lex);
 931                 par.insertInset(par.size(), inset, font, change);
 932         } else if (token == "\\backslash") {
 933                 par.insertChar(par.size(), '\\', font, change);
 934         } else if (token == "\\newline") {
 935                 Inset * inset = new InsetNewline;
 936                 inset->read(&buf, lex);
 937                 par.insertInset(par.size(), inset, font, change);
 938         } else if (token == "\\LyXTable") {
 939                 Inset * inset = new InsetTabular(buf);
 940                 inset->read(&buf, lex);
 941                 par.insertInset(par.size(), inset, font, change);
 942         } else if (token == "\\bibitem") {
 943                 InsetCommandParams p("bibitem", "dummy");
 944                 InsetBibitem * inset = new InsetBibitem(p);
 945                 inset->read(&buf, lex);
 946                 par.insertInset(par.size(), inset, font, change);
 947         } else if (token == "\\hfill") {
 948                 par.insertInset(par.size(), new InsetHFill(), font, change);
 949         } else if (token == "\\change_unchanged") {
 950                 // Hack ! Needed for empty paragraphs :/
 951                 // FIXME: is it still ??
 952                 if (!par.size())
 953                         par.cleanChanges();
 954                 change = Change(Change::UNCHANGED);
 955         } else if (token == "\\change_inserted") {
 956                 lex.nextToken();
 957                 istringstream istr(lex.getString());
 958                 int aid;
 959                 lyx::time_type ct;
 960                 istr >> aid;
 961                 istr >> ct;
 962                 change = Change(Change::INSERTED, bp.author_map[aid], ct);
 963         } else if (token == "\\change_deleted") {
 964                 lex.nextToken();
 965                 istringstream istr(lex.getString());
 966                 int aid;
 967                 lyx::time_type ct;
 968                 istr >> aid;
 969                 istr >> ct;
 970                 change = Change(Change::DELETED, bp.author_map[aid], ct);
 971         } else {
 972                 lex.eatLine();
 973 #if USE_BOOST_FORMAT
 974                 boost::format fmt(_("Unknown token: %1$s %2$s\n"));
 975                 fmt % token % lex.getString();
 976                 string const s = fmt.str();
 977 #else
 978                 string const s = _("Unknown token: ") + token
 979                         + ' ' + lex.getString() + '\n';
 980 #endif
 981                 // we can do this here this way because we're actually reading
 982                 // the buffer and don't care about LyXText right now.
 983                 InsetError * inset = new InsetError(s);
 984                 par.insertInset(par.size(), inset, font);
 985                 return 1;
 986         }
 987         return 0;
 988 }
 989
 990 }
 991
 992
 993 int readParagraph(Buffer & buf, Paragraph & par, LyXLex & lex)
 994 {
 995         int unknown = 0;
 996
 997         lex.nextToken();
 998         string token = lex.getString();
 999
1000         while (lex.isOK()) {
1001
1002                 unknown += readParToken(buf, par, lex, token);
1003
1004                 lex.nextToken();
1005                 token = lex.getString();
1006
1007                 if (token.empty())
1008                         continue;
1009
1010                 lyxerr[Debug::PARSER] << "Handling paragraph token: `"
1011                                       << token << '\'' << endl;
1012
1013                 // reached the next paragraph. FIXME: really we should
1014                 // change the file format to indicate the end of a par
1015                 // clearly, but for now, this hack will do
1016                 if (token == "\\layout" || token == "\\the_end"
1017                     || token == "\\end_inset" || token == "\\begin_deeper"
1018                     || token == "\\end_deeper") {
1019                         lex.pushToken(token);
1020                         break;
1021                 }
1022         }
1023
1024         return unknown;
1025 }
1026
1027
1028 LyXFont const realizeFont(LyXFont const & font,
1029                           Buffer const * buf,
1030                           ParagraphList & /*plist*/,
1031                           ParagraphList::iterator pit)
1032 {
1033         LyXTextClass const & tclass = buf->params.getLyXTextClass();
1034         LyXFont tmpfont(font);
1035         Paragraph::depth_type par_depth = pit->getDepth();
1036
1037         Paragraph * par = &*pit;
1038
1039         // Resolve against environment font information
1040         while (par && par_depth && !tmpfont.resolved()) {
1041                 par = outerHook(par);
1042                 if (par) {
1043                         tmpfont.realize(par->layout()->font);
1044                         par_depth = par->getDepth();
1045                 }
1046         }
1047
1048         tmpfont.realize(tclass.defaultfont());
1049
1050         return tmpfont;
1051 }