src/paragraph.C

   1 /**
   2  * \file paragraph.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Asger Alstrup
   7  * \author Lars Gullik Bjønnes
   8  * \author Jean-Marc Lasgouttes
   9  * \author Angus Leeming
  10  * \author John Levon
  11  * \author André Pönitz
  12  * \author Dekel Tsur
  13  * \author Jürgen Vigna
  14  *
  15  * Full author contact details are available in file CREDITS.
  16  */
  17
  18 #include <config.h>
  19
  20 #include "paragraph.h"
  21 #include "paragraph_pimpl.h"
  22
  23 #include "buffer.h"
  24 #include "bufferparams.h"
  25 #include "counters.h"
  26 #include "encoding.h"
  27 #include "debug.h"
  28 #include "gettext.h"
  29 #include "language.h"
  30 #include "lyxfont.h"
  31 #include "lyxrc.h"
  32 #include "lyxrow.h"
  33 #include "outputparams.h"
  34 #include "paragraph_funcs.h"
  35 #include "sgml.h"
  36 #include "texrow.h"
  37 #include "vspace.h"
  38
  39 #include "insets/insetbibitem.h"
  40 #include "insets/insetoptarg.h"
  41
  42 #include "support/lstrings.h"
  43 #include "support/std_sstream.h"
  44 #include "support/textutils.h"
  45 #include "support/tostr.h"
  46
  47 #include <boost/tuple/tuple.hpp>
  48 #include <boost/bind.hpp>
  49
  50 #include <list>
  51 #include <stack>
  52
  53 using lyx::pos_type;
  54
  55 using lyx::support::contains;
  56 using lyx::support::subst;
  57
  58 using std::endl;
  59 using std::list;
  60 using std::stack;
  61 using std::string;
  62 using std::ostream;
  63 using std::ostringstream;
  64
  65
  66 Paragraph::Paragraph()
  67         : y(0), height(0), begin_of_body_(0),
  68           pimpl_(new Paragraph::Pimpl(this))
  69 {
  70         itemdepth = 0;
  71         params().clear();
  72 }
  73
  74
  75 Paragraph::Paragraph(Paragraph const & par)
  76         : y(0), height(0), text_(par.text_), begin_of_body_(par.begin_of_body_),
  77           pimpl_(new Paragraph::Pimpl(*par.pimpl_, this))
  78 {
  79         itemdepth = 0;
  80         // this is because of the dummy layout of the paragraphs that
  81         // follow footnotes
  82         layout_ = par.layout();
  83
  84         // copy everything behind the break-position to the new paragraph
  85         insetlist = par.insetlist;
  86         InsetList::iterator it = insetlist.begin();
  87         InsetList::iterator end = insetlist.end();
  88         for (; it != end; ++it) {
  89                 // currently we hold Inset*, not InsetBase*
  90                 it->inset = static_cast<InsetOld*>(it->inset->clone().release());
  91         }
  92 }
  93
  94
  95 void Paragraph::operator=(Paragraph const & par)
  96 {
  97         // needed as we will destroy the pimpl_ before copying it
  98         if (&par != this)
  99                 return;
 100
 101         lyxerr << "Paragraph::operator=()" << endl;
 102
 103         text_ = par.text_;
 104
 105         delete pimpl_;
 106         pimpl_ = new Pimpl(*par.pimpl_, this);
 107
 108         itemdepth = par.itemdepth;
 109         // this is because of the dummy layout of the paragraphs that
 110         // follow footnotes
 111         layout_ = par.layout();
 112
 113         // copy everything behind the break-position to the new paragraph
 114         insetlist = par.insetlist;
 115         InsetList::iterator it = insetlist.begin();
 116         InsetList::iterator end = insetlist.end();
 117         for (; it != end; ++it) {
 118                 it->inset = static_cast<InsetOld*>(it->inset->clone().release());
 119         }
 120 }
 121
 122
 123 Paragraph::~Paragraph()
 124 {
 125         delete pimpl_;
 126         //
 127         //lyxerr << "Paragraph::paragraph_id = "
 128         //       << Paragraph::paragraph_id << endl;
 129 }
 130
 131
 132 void Paragraph::write(Buffer const & buf, ostream & os,
 133                           BufferParams const & bparams,
 134                           depth_type & dth) const
 135 {
 136         // The beginning or end of a deeper (i.e. nested) area?
 137         if (dth != params().depth()) {
 138                 if (params().depth() > dth) {
 139                         while (params().depth() > dth) {
 140                                 os << "\n\\begin_deeper ";
 141                                 ++dth;
 142                         }
 143                 } else {
 144                         while (params().depth() < dth) {
 145                                 os << "\n\\end_deeper ";
 146                                 --dth;
 147                         }
 148                 }
 149         }
 150
 151         // First write the layout
 152         os << "\n\\begin_layout " << layout()->name() << '\n';
 153
 154         params().write(os);
 155
 156         LyXFont font1(LyXFont::ALL_INHERIT, bparams.language);
 157
 158         Change running_change = Change(Change::UNCHANGED);
 159         lyx::time_type const curtime(lyx::current_time());
 160
 161         int column = 0;
 162         for (pos_type i = 0; i < size(); ++i) {
 163                 if (!i) {
 164                         os << '\n';
 165                         column = 0;
 166                 }
 167
 168                 Change change = pimpl_->lookupChangeFull(i);
 169                 Changes::lyxMarkChange(os, column, curtime, running_change, change);
 170                 running_change = change;
 171
 172                 // Write font changes
 173                 LyXFont font2 = getFontSettings(bparams, i);
 174                 if (font2 != font1) {
 175                         font2.lyxWriteChanges(font1, os);
 176                         column = 0;
 177                         font1 = font2;
 178                 }
 179
 180                 value_type const c = getChar(i);
 181                 switch (c) {
 182                 case META_INSET:
 183                 {
 184                         InsetOld const * inset = getInset(i);
 185                         if (inset)
 186                                 if (inset->directWrite()) {
 187                                         // international char, let it write
 188                                         // code directly so it's shorter in
 189                                         // the file
 190                                         inset->write(buf, os);
 191                                 } else {
 192                                         os << "\n\\begin_inset ";
 193                                         inset->write(buf, os);
 194                                         os << "\n\\end_inset \n\n";
 195                                         column = 0;
 196                                 }
 197                 }
 198                 break;
 199                 case '\\':
 200                         os << "\n\\backslash \n";
 201                         column = 0;
 202                         break;
 203                 case '.':
 204                         if (i + 1 < size() && getChar(i + 1) == ' ') {
 205                                 os << ".\n";
 206                                 column = 0;
 207                         } else
 208                                 os << '.';
 209                         break;
 210                 default:
 211                         if ((column > 70 && c == ' ')
 212                             || column > 79) {
 213                                 os << '\n';
 214                                 column = 0;
 215                         }
 216                         // this check is to amend a bug. LyX sometimes
 217                         // inserts '\0' this could cause problems.
 218                         if (c != '\0')
 219                                 os << c;
 220                         else
 221                                 lyxerr << "ERROR (Paragraph::writeFile):"
 222                                         " NULL char in structure." << endl;
 223                         ++column;
 224                         break;
 225                 }
 226         }
 227
 228         // to make reading work properly
 229         if (!size()) {
 230                 running_change = pimpl_->lookupChange(0);
 231                 Changes::lyxMarkChange(os, column, curtime,
 232                         Change(Change::UNCHANGED), running_change);
 233         }
 234         Changes::lyxMarkChange(os, column, curtime,
 235                 running_change, Change(Change::UNCHANGED));
 236
 237         os << "\n\\end_layout\n";
 238 }
 239
 240
 241 void Paragraph::validate(LaTeXFeatures & features) const
 242 {
 243         pimpl_->validate(features, *layout());
 244 }
 245
 246
 247 void Paragraph::eraseIntern(lyx::pos_type pos)
 248 {
 249         pimpl_->eraseIntern(pos);
 250 }
 251
 252
 253 bool Paragraph::erase(pos_type pos)
 254 {
 255         return pimpl_->erase(pos);
 256 }
 257
 258
 259 int Paragraph::erase(pos_type start, pos_type end)
 260 {
 261         return pimpl_->erase(start, end);
 262 }
 263
 264
 265 void Paragraph::insert(pos_type start, string const & str,
 266                        LyXFont const & font)
 267 {
 268         int size = str.size();
 269         for (int i = 0 ; i < size ; ++i)
 270                 insertChar(start + i, str[i], font);
 271 }
 272
 273
 274 bool Paragraph::checkInsertChar(LyXFont &)
 275 {
 276         return true;
 277 }
 278
 279
 280 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c)
 281 {
 282         insertChar(pos, c, LyXFont(LyXFont::ALL_INHERIT));
 283 }
 284
 285
 286 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
 287                            LyXFont const & font, Change change)
 288 {
 289         pimpl_->insertChar(pos, c, font, change);
 290 }
 291
 292
 293 void Paragraph::insertInset(pos_type pos, InsetOld * inset)
 294 {
 295         insertInset(pos, inset, LyXFont(LyXFont::ALL_INHERIT));
 296 }
 297
 298
 299 void Paragraph::insertInset(pos_type pos, InsetOld * inset,
 300         LyXFont const & font, Change change)
 301 {
 302         pimpl_->insertInset(pos, inset, font, change);
 303 }
 304
 305
 306 bool Paragraph::insetAllowed(InsetOld_code code)
 307 {
 308         //lyxerr << "Paragraph::InsertInsetAllowed" << endl;
 309         if (pimpl_->inset_owner)
 310                 return pimpl_->inset_owner->insetAllowed(code);
 311         return true;
 312 }
 313
 314
 315 InsetOld * Paragraph::getInset(pos_type pos)
 316 {
 317         BOOST_ASSERT(pos < size());
 318         return insetlist.get(pos);
 319 }
 320
 321
 322 InsetOld const * Paragraph::getInset(pos_type pos) const
 323 {
 324         BOOST_ASSERT(pos < size());
 325         return insetlist.get(pos);
 326 }
 327
 328
 329 // Gets uninstantiated font setting at position.
 330 LyXFont const Paragraph::getFontSettings(BufferParams const & bparams,
 331                                          pos_type pos) const
 332 {
 333         BOOST_ASSERT(pos <= size());
 334
 335         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 336         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
 337         for (; cit != end; ++cit)
 338                 if (cit->pos() >= pos)
 339                         break;
 340
 341         if (cit != end)
 342                 return cit->font();
 343
 344         if (pos == size() && !empty())
 345                 return getFontSettings(bparams, pos - 1);
 346
 347         return LyXFont(LyXFont::ALL_INHERIT, getParLanguage(bparams));
 348 }
 349
 350
 351 lyx::pos_type Paragraph::getEndPosOfFontSpan(lyx::pos_type pos) const
 352 {
 353         BOOST_ASSERT(pos <= size());
 354
 355         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 356         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
 357         for (; cit != end; ++cit)
 358                 if (cit->pos() >= pos)
 359                         return cit->pos();
 360
 361         // This should not happen, but if so, we take no chances.
 362         //lyxerr << "Paragraph::getEndPosOfFontSpan: This should not happen!"
 363         //      << endl;
 364         return pos;
 365 }
 366
 367
 368 // Gets uninstantiated font setting at position 0
 369 LyXFont const Paragraph::getFirstFontSettings() const
 370 {
 371         if (!empty() && !pimpl_->fontlist.empty())
 372                 return pimpl_->fontlist[0].font();
 373
 374         return LyXFont(LyXFont::ALL_INHERIT);
 375 }
 376
 377
 378 // Gets the fully instantiated font at a given position in a paragraph
 379 // This is basically the same function as LyXText::GetFont() in text2.C.
 380 // The difference is that this one is used for generating the LaTeX file,
 381 // and thus cosmetic "improvements" are disallowed: This has to deliver
 382 // the true picture of the buffer. (Asger)
 383 LyXFont const Paragraph::getFont(BufferParams const & bparams, pos_type pos,
 384                                  LyXFont const & outerfont) const
 385 {
 386         BOOST_ASSERT(pos >= 0);
 387
 388         LyXLayout_ptr const & lout = layout();
 389
 390         pos_type const body_pos = beginOfBody();
 391
 392         LyXFont layoutfont;
 393         if (pos < body_pos)
 394                 layoutfont = lout->labelfont;
 395         else
 396                 layoutfont = lout->font;
 397
 398         LyXFont font = getFontSettings(bparams, pos);
 399         font.realize(layoutfont);
 400         font.realize(outerfont);
 401         font.realize(bparams.getLyXTextClass().defaultfont());
 402
 403         return font;
 404 }
 405
 406
 407 LyXFont const Paragraph::getLabelFont(BufferParams const & bparams,
 408                                       LyXFont const & outerfont) const
 409 {
 410         LyXFont tmpfont = layout()->labelfont;
 411         tmpfont.setLanguage(getParLanguage(bparams));
 412         tmpfont.realize(outerfont);
 413         tmpfont.realize(bparams.getLyXTextClass().defaultfont());
 414         return tmpfont;
 415 }
 416
 417
 418 LyXFont const Paragraph::getLayoutFont(BufferParams const & bparams,
 419                                        LyXFont const & outerfont) const
 420 {
 421         LyXFont tmpfont = layout()->font;
 422         tmpfont.setLanguage(getParLanguage(bparams));
 423         tmpfont.realize(outerfont);
 424         tmpfont.realize(bparams.getLyXTextClass().defaultfont());
 425         return tmpfont;
 426 }
 427
 428
 429 /// Returns the height of the highest font in range
 430 LyXFont_size
 431 Paragraph::highestFontInRange(pos_type startpos, pos_type endpos,
 432                               LyXFont_size def_size) const
 433 {
 434         if (pimpl_->fontlist.empty())
 435                 return def_size;
 436
 437         Pimpl::FontList::const_iterator end_it = pimpl_->fontlist.begin();
 438         Pimpl::FontList::const_iterator const end = pimpl_->fontlist.end();
 439         for (; end_it != end; ++end_it) {
 440                 if (end_it->pos() >= endpos)
 441                         break;
 442         }
 443
 444         if (end_it != end)
 445                 ++end_it;
 446
 447         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 448         for (; cit != end; ++cit) {
 449                 if (cit->pos() >= startpos)
 450                         break;
 451         }
 452
 453         LyXFont::FONT_SIZE maxsize = LyXFont::SIZE_TINY;
 454         for (; cit != end_it; ++cit) {
 455                 LyXFont::FONT_SIZE size = cit->font().size();
 456                 if (size == LyXFont::INHERIT_SIZE)
 457                         size = def_size;
 458                 if (size > maxsize && size <= LyXFont::SIZE_HUGER)
 459                         maxsize = size;
 460         }
 461         return maxsize;
 462 }
 463
 464
 465 Paragraph::value_type
 466 Paragraph::getUChar(BufferParams const & bparams, pos_type pos) const
 467 {
 468         value_type c = getChar(pos);
 469         if (!lyxrc.rtl_support)
 470                 return c;
 471
 472         value_type uc = c;
 473         switch (c) {
 474         case '(':
 475                 uc = ')';
 476                 break;
 477         case ')':
 478                 uc = '(';
 479                 break;
 480         case '[':
 481                 uc = ']';
 482                 break;
 483         case ']':
 484                 uc = '[';
 485                 break;
 486         case '{':
 487                 uc = '}';
 488                 break;
 489         case '}':
 490                 uc = '{';
 491                 break;
 492         case '<':
 493                 uc = '>';
 494                 break;
 495         case '>':
 496                 uc = '<';
 497                 break;
 498         }
 499         if (uc != c && getFontSettings(bparams, pos).isRightToLeft())
 500                 return uc;
 501         else
 502                 return c;
 503 }
 504
 505
 506 void Paragraph::setFont(pos_type pos, LyXFont const & font)
 507 {
 508         BOOST_ASSERT(pos <= size());
 509
 510         // First, reduce font against layout/label font
 511         // Update: The setCharFont() routine in text2.C already
 512         // reduces font, so we don't need to do that here. (Asger)
 513         // No need to simplify this because it will disappear
 514         // in a new kernel. (Asger)
 515         // Next search font table
 516
 517         Pimpl::FontList::iterator beg = pimpl_->fontlist.begin();
 518         Pimpl::FontList::iterator it = beg;
 519         Pimpl::FontList::iterator endit = pimpl_->fontlist.end();
 520         for (; it != endit; ++it) {
 521                 if (it->pos() >= pos)
 522                         break;
 523         }
 524         unsigned int i = std::distance(beg, it);
 525         bool notfound = (it == endit);
 526
 527         if (!notfound && pimpl_->fontlist[i].font() == font)
 528                 return;
 529
 530         bool begin = pos == 0 || notfound ||
 531                 (i > 0 && pimpl_->fontlist[i - 1].pos() == pos - 1);
 532         // Is position pos is a beginning of a font block?
 533         bool end = !notfound && pimpl_->fontlist[i].pos() == pos;
 534         // Is position pos is the end of a font block?
 535         if (begin && end) { // A single char block
 536                 if (i + 1 < pimpl_->fontlist.size() &&
 537                     pimpl_->fontlist[i + 1].font() == font) {
 538                         // Merge the singleton block with the next block
 539                         pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i);
 540                         if (i > 0 && pimpl_->fontlist[i - 1].font() == font)
 541                                 pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i - 1);
 542                 } else if (i > 0 && pimpl_->fontlist[i - 1].font() == font) {
 543                         // Merge the singleton block with the previous block
 544                         pimpl_->fontlist[i - 1].pos(pos);
 545                         pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i);
 546                 } else
 547                         pimpl_->fontlist[i].font(font);
 548         } else if (begin) {
 549                 if (i > 0 && pimpl_->fontlist[i - 1].font() == font)
 550                         pimpl_->fontlist[i - 1].pos(pos);
 551                 else
 552                         pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i,
 553                                         Pimpl::FontTable(pos, font));
 554         } else if (end) {
 555                 pimpl_->fontlist[i].pos(pos - 1);
 556                 if (!(i + 1 < pimpl_->fontlist.size() &&
 557                       pimpl_->fontlist[i + 1].font() == font))
 558                         pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i + 1,
 559                                         Pimpl::FontTable(pos, font));
 560         } else { // The general case. The block is splitted into 3 blocks
 561                 pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i,
 562                                 Pimpl::FontTable(pos - 1, pimpl_->fontlist[i].font()));
 563                 pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i + 1,
 564                                 Pimpl::FontTable(pos, font));
 565         }
 566 }
 567
 568
 569 void Paragraph::makeSameLayout(Paragraph const & par)
 570 {
 571         layout(par.layout());
 572         // move to pimpl?
 573         params() = par.params();
 574 }
 575
 576
 577 int Paragraph::stripLeadingSpaces()
 578 {
 579         if (isFreeSpacing())
 580                 return 0;
 581
 582         int i = 0;
 583         while (!empty() && (isNewline(0) || isLineSeparator(0))) {
 584                 pimpl_->eraseIntern(0);
 585                 ++i;
 586         }
 587
 588         return i;
 589 }
 590
 591
 592 bool Paragraph::hasSameLayout(Paragraph const & par) const
 593 {
 594         return par.layout() == layout() && params().sameLayout(par.params());
 595 }
 596
 597
 598 Paragraph::depth_type Paragraph::getDepth() const
 599 {
 600         return params().depth();
 601 }
 602
 603
 604 Paragraph::depth_type Paragraph::getMaxDepthAfter() const
 605 {
 606         if (layout()->isEnvironment())
 607                 return params().depth() + 1;
 608         else
 609                 return params().depth();
 610 }
 611
 612
 613 char Paragraph::getAlign() const
 614 {
 615         return params().align();
 616 }
 617
 618
 619 string const & Paragraph::getLabelstring() const
 620 {
 621         return params().labelString();
 622 }
 623
 624
 625 // the next two functions are for the manual labels
 626 string const Paragraph::getLabelWidthString() const
 627 {
 628         if (!params().labelWidthString().empty())
 629                 return params().labelWidthString();
 630         else
 631                 return _("Senseless with this layout!");
 632 }
 633
 634
 635 void Paragraph::setLabelWidthString(string const & s)
 636 {
 637         params().labelWidthString(s);
 638 }
 639
 640
 641 void Paragraph::applyLayout(LyXLayout_ptr const & new_layout)
 642 {
 643         layout(new_layout);
 644         params().labelWidthString(string());
 645         params().align(LYX_ALIGN_LAYOUT);
 646         params().spacing(Spacing(Spacing::Default));
 647 }
 648
 649
 650 int Paragraph::beginOfBody() const
 651 {
 652         return begin_of_body_;
 653 }
 654
 655
 656 void Paragraph::setBeginOfBody()
 657 {
 658         if (layout()->labeltype != LABEL_MANUAL) {
 659                 begin_of_body_ = 0;
 660                 return;
 661         }
 662
 663         // Unroll the first two cycles of the loop
 664         // and remember the previous character to
 665         // remove unnecessary getChar() calls
 666         pos_type i = 0;
 667         pos_type end = size();
 668         if (i < end && !isNewline(i)) {
 669                 ++i;
 670                 char previous_char = 0;
 671                 char temp = 0;
 672                 if (i < end) {
 673                         previous_char = text_[i];
 674                         if (!isNewline(i)) {
 675                                 ++i;
 676                                 while (i < end && previous_char != ' ') {
 677                                         temp = text_[i];
 678                                         if (isNewline(i))
 679                                                 break;
 680                                         ++i;
 681                                         previous_char = temp;
 682                                 }
 683                         }
 684                 }
 685         }
 686
 687         begin_of_body_ = i;
 688 }
 689
 690
 691 // returns -1 if inset not found
 692 int Paragraph::getPositionOfInset(InsetOld const * inset) const
 693 {
 694         // Find the entry.
 695         InsetList::const_iterator it = insetlist.begin();
 696         InsetList::const_iterator end = insetlist.end();
 697         for (; it != end; ++it)
 698                 if (it->inset == inset)
 699                         return it->pos;
 700         return -1;
 701 }
 702
 703
 704 InsetBibitem * Paragraph::bibitem() const
 705 {
 706         if (!insetlist.empty()) {
 707                 InsetOld * inset = insetlist.begin()->inset;
 708                 if (inset->lyxCode() == InsetOld::BIBTEX_CODE)
 709                         return static_cast<InsetBibitem *>(inset);
 710         }
 711         return 0;
 712 }
 713
 714
 715 namespace {
 716
 717 // paragraphs inside floats need different alignment tags to avoid
 718 // unwanted space
 719
 720 bool noTrivlistCentering(UpdatableInset const * inset)
 721 {
 722         if (inset && inset->owner()) {
 723                 InsetOld::Code const code = inset->owner()->lyxCode();
 724                 return code == InsetOld::FLOAT_CODE ||
 725                         code == InsetOld::WRAP_CODE;
 726         }
 727         return false;
 728 }
 729
 730
 731 string correction(string const & orig)
 732 {
 733         if (orig == "flushleft")
 734                 return "raggedright";
 735         if (orig == "flushright")
 736                 return "raggedleft";
 737         if (orig == "center")
 738                 return "centering";
 739         return orig;
 740 }
 741
 742
 743 string const corrected_env(string const & suffix, string const & env,
 744                            UpdatableInset const * inset)
 745 {
 746         string output = suffix + "{";
 747         if (noTrivlistCentering(inset))
 748                 output += correction(env);
 749         else
 750                 output += env;
 751         return output + "}";
 752 }
 753
 754 } // namespace anon
 755
 756
 757 // This could go to ParagraphParameters if we want to
 758 int Paragraph::startTeXParParams(BufferParams const & bparams,
 759                                  ostream & os, bool moving_arg) const
 760 {
 761         int column = 0;
 762
 763         if (params().noindent()) {
 764                 os << "\\noindent ";
 765                 column += 10;
 766         }
 767
 768         switch (params().align()) {
 769         case LYX_ALIGN_NONE:
 770         case LYX_ALIGN_BLOCK:
 771         case LYX_ALIGN_LAYOUT:
 772         case LYX_ALIGN_SPECIAL:
 773                 break;
 774         case LYX_ALIGN_LEFT:
 775         case LYX_ALIGN_RIGHT:
 776         case LYX_ALIGN_CENTER:
 777                 if (moving_arg) {
 778                         os << "\\protect";
 779                         column = 8;
 780                 }
 781                 break;
 782         }
 783
 784         switch (params().align()) {
 785         case LYX_ALIGN_NONE:
 786         case LYX_ALIGN_BLOCK:
 787         case LYX_ALIGN_LAYOUT:
 788         case LYX_ALIGN_SPECIAL:
 789                 break;
 790         case LYX_ALIGN_LEFT: {
 791                 string output;
 792                 UpdatableInset const * const inset = pimpl_->inset_owner;
 793                 if (getParLanguage(bparams)->babel() != "hebrew")
 794                         output = corrected_env("\\begin", "flushleft", inset);
 795                 else
 796                         output = corrected_env("\\begin", "flushright", inset);
 797                 os << output;
 798                 column += output.size();
 799                 break;
 800         } case LYX_ALIGN_RIGHT: {
 801                 string output;
 802                 UpdatableInset const * const inset = pimpl_->inset_owner;
 803                 if (getParLanguage(bparams)->babel() != "hebrew")
 804                         output = corrected_env("\\begin", "flushright", inset);
 805                 else
 806                         output = corrected_env("\\begin", "flushleft", inset);
 807                 os << output;
 808                 column += output.size();
 809                 break;
 810         } case LYX_ALIGN_CENTER: {
 811                 string output;
 812                 output = corrected_env("\\begin", "center", pimpl_->inset_owner);
 813                 os << output;
 814                 column += output.size();
 815                 break;
 816         }
 817         }
 818
 819         return column;
 820 }
 821
 822
 823 // This could go to ParagraphParameters if we want to
 824 int Paragraph::endTeXParParams(BufferParams const & bparams,
 825                                ostream & os, bool moving_arg) const
 826 {
 827         int column = 0;
 828
 829         switch (params().align()) {
 830         case LYX_ALIGN_NONE:
 831         case LYX_ALIGN_BLOCK:
 832         case LYX_ALIGN_LAYOUT:
 833         case LYX_ALIGN_SPECIAL:
 834                 break;
 835         case LYX_ALIGN_LEFT:
 836         case LYX_ALIGN_RIGHT:
 837         case LYX_ALIGN_CENTER:
 838                 if (moving_arg) {
 839                         os << "\\protect";
 840                         column = 8;
 841                 }
 842                 break;
 843         }
 844
 845         switch (params().align()) {
 846         case LYX_ALIGN_NONE:
 847         case LYX_ALIGN_BLOCK:
 848         case LYX_ALIGN_LAYOUT:
 849         case LYX_ALIGN_SPECIAL:
 850                 break;
 851         case LYX_ALIGN_LEFT: {
 852                 string output;
 853                 UpdatableInset const * const inset = pimpl_->inset_owner;
 854                 if (getParLanguage(bparams)->babel() != "hebrew")
 855                         output = corrected_env("\\par\\end", "flushleft", inset);
 856                 else
 857                         output = corrected_env("\\par\\end", "flushright", inset);
 858                 os << output;
 859                 column += output.size();
 860                 break;
 861         } case LYX_ALIGN_RIGHT: {
 862                 string output;
 863                 UpdatableInset const * const inset = pimpl_->inset_owner;
 864                 if (getParLanguage(bparams)->babel() != "hebrew")
 865                         output = corrected_env("\\par\\end", "flushright", inset);
 866                 else
 867                         output = corrected_env("\\par\\end", "flushleft", inset);
 868                 os << output;
 869                 column += output.size();
 870                 break;
 871         } case LYX_ALIGN_CENTER: {
 872                 string output;
 873                 output = corrected_env("\\par\\end", "center", pimpl_->inset_owner);
 874                 os << output;
 875                 column += output.size();
 876                 break;
 877         }
 878         }
 879
 880         return column;
 881 }
 882
 883
 884 // This one spits out the text of the paragraph
 885 bool Paragraph::simpleTeXOnePar(Buffer const & buf,
 886                                 BufferParams const & bparams,
 887                                 LyXFont const & outerfont,
 888                                 ostream & os, TexRow & texrow,
 889                                 OutputParams const & runparams)
 890 {
 891         lyxerr[Debug::LATEX] << "SimpleTeXOnePar...     " << this << endl;
 892
 893         bool return_value = false;
 894
 895         LyXLayout_ptr style;
 896
 897         // well we have to check if we are in an inset with unlimited
 898         // length (all in one row) if that is true then we don't allow
 899         // any special options in the paragraph and also we don't allow
 900         // any environment other then "Standard" to be valid!
 901         bool asdefault =
 902                 (inInset() && inInset()->forceDefaultParagraphs(inInset()));
 903
 904         if (asdefault) {
 905                 style = bparams.getLyXTextClass().defaultLayout();
 906         } else {
 907                 style = layout();
 908         }
 909
 910         LyXFont basefont;
 911
 912         // Maybe we have to create a optional argument.
 913         pos_type body_pos = beginOfBody();
 914         unsigned int column = 0;
 915
 916         if (body_pos > 0) {
 917                 os << '[';
 918                 ++column;
 919                 basefont = getLabelFont(bparams, outerfont);
 920         } else {
 921                 basefont = getLayoutFont(bparams, outerfont);
 922         }
 923
 924         bool moving_arg = runparams.moving_arg;
 925         moving_arg |= style->needprotect;
 926
 927         // Which font is currently active?
 928         LyXFont running_font(basefont);
 929         // Do we have an open font change?
 930         bool open_font = false;
 931
 932         Change::Type running_change = Change::UNCHANGED;
 933
 934         texrow.start(id(), 0);
 935
 936         // if the paragraph is empty, the loop will not be entered at all
 937         if (empty()) {
 938                 if (style->isCommand()) {
 939                         os << '{';
 940                         ++column;
 941                 }
 942                 if (!asdefault)
 943                         column += startTeXParParams(bparams, os, moving_arg);
 944         }
 945
 946         for (pos_type i = 0; i < size(); ++i) {
 947                 ++column;
 948                 // First char in paragraph or after label?
 949                 if (i == body_pos) {
 950                         if (body_pos > 0) {
 951                                 if (open_font) {
 952                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
 953                                         open_font = false;
 954                                 }
 955                                 basefont = getLayoutFont(bparams, outerfont);
 956                                 running_font = basefont;
 957                                 os << ']';
 958                                 ++column;
 959                         }
 960                         if (style->isCommand()) {
 961                                 os << '{';
 962                                 ++column;
 963                         }
 964
 965                         if (!asdefault)
 966                                 column += startTeXParParams(bparams, os,
 967                                                             moving_arg);
 968                 }
 969
 970                 value_type c = getChar(i);
 971
 972                 // Fully instantiated font
 973                 LyXFont font = getFont(bparams, i, outerfont);
 974
 975                 LyXFont const last_font = running_font;
 976
 977                 // Spaces at end of font change are simulated to be
 978                 // outside font change, i.e. we write "\textXX{text} "
 979                 // rather than "\textXX{text }". (Asger)
 980                 if (open_font && c == ' ' && i <= size() - 2) {
 981                         LyXFont const & next_font = getFont(bparams, i + 1, outerfont);
 982                         if (next_font != running_font && next_font != font) {
 983                                 font = next_font;
 984                         }
 985                 }
 986
 987                 // We end font definition before blanks
 988                 if (open_font &&
 989                     (font != running_font ||
 990                      font.language() != running_font.language()))
 991                 {
 992                         column += running_font.latexWriteEndChanges(os,
 993                                                                     basefont,
 994                                                                     (i == body_pos-1) ? basefont : font);
 995                         running_font = basefont;
 996                         open_font = false;
 997                 }
 998
 999                 // Blanks are printed before start of fontswitch
1000                 if (c == ' ') {
1001                         // Do not print the separation of the optional argument
1002                         if (i != body_pos - 1) {
1003                                 pimpl_->simpleTeXBlanks(os, texrow, i,
1004                                                        column, font, *style);
1005                         }
1006                 }
1007
1008                 // Do we need to change font?
1009                 if ((font != running_font ||
1010                      font.language() != running_font.language()) &&
1011                         i != body_pos - 1)
1012                 {
1013                         column += font.latexWriteStartChanges(os, basefont,
1014                                                               last_font);
1015                         running_font = font;
1016                         open_font = true;
1017                 }
1018
1019                 Change::Type change = pimpl_->lookupChange(i);
1020
1021                 column += Changes::latexMarkChange(os, running_change, change);
1022                 running_change = change;
1023
1024                 OutputParams rp = runparams;
1025                 rp.moving_arg = moving_arg;
1026                 rp.free_spacing = style->free_spacing;
1027                 pimpl_->simpleTeXSpecialChars(buf, bparams,
1028                                               os, texrow, runparams,
1029                                               font, running_font,
1030                                               basefont, outerfont, open_font,
1031                                               running_change,
1032                                               *style, i, column, c);
1033         }
1034
1035         column += Changes::latexMarkChange(os,
1036                         running_change, Change::UNCHANGED);
1037
1038         // If we have an open font definition, we have to close it
1039         if (open_font) {
1040 #ifdef FIXED_LANGUAGE_END_DETECTION
1041                 if (next_) {
1042                         running_font
1043                                 .latexWriteEndChanges(os, basefont,
1044                                                       next_->getFont(bparams,
1045                                                       0, outerfont));
1046                 } else {
1047                         running_font.latexWriteEndChanges(os, basefont,
1048                                                           basefont);
1049                 }
1050 #else
1051 #ifdef WITH_WARNINGS
1052 //#warning For now we ALWAYS have to close the foreign font settings if they are
1053 //#warning there as we start another \selectlanguage with the next paragraph if
1054 //#warning we are in need of this. This should be fixed sometime (Jug)
1055 #endif
1056                 running_font.latexWriteEndChanges(os, basefont,  basefont);
1057 #endif
1058         }
1059
1060         // Needed if there is an optional argument but no contents.
1061         if (body_pos > 0 && body_pos == size()) {
1062                 os << "]~";
1063                 return_value = false;
1064         }
1065
1066         if (!asdefault) {
1067                 column += endTeXParParams(bparams, os, moving_arg);
1068         }
1069
1070         lyxerr[Debug::LATEX] << "SimpleTeXOnePar...done " << this << endl;
1071         return return_value;
1072 }
1073
1074
1075 namespace {
1076
1077 // checks, if newcol chars should be put into this line
1078 // writes newline, if necessary.
1079 void sgmlLineBreak(ostream & os, string::size_type & colcount,
1080                           string::size_type newcol)
1081 {
1082         colcount += newcol;
1083         if (colcount > lyxrc.ascii_linelen) {
1084                 os << "\n";
1085                 colcount = newcol; // assume write after this call
1086         }
1087 }
1088
1089 enum PAR_TAG {
1090         NONE=0,
1091         TT = 1,
1092         SF = 2,
1093         BF = 4,
1094         IT = 8,
1095         SL = 16,
1096         EM = 32
1097 };
1098
1099
1100 string tag_name(PAR_TAG const & pt) {
1101         switch (pt) {
1102         case NONE: return "!-- --";
1103         case TT: return "tt";
1104         case SF: return "sf";
1105         case BF: return "bf";
1106         case IT: return "it";
1107         case SL: return "sl";
1108         case EM: return "em";
1109         }
1110         return "";
1111 }
1112
1113
1114 inline
1115 void operator|=(PAR_TAG & p1, PAR_TAG const & p2)
1116 {
1117         p1 = static_cast<PAR_TAG>(p1 | p2);
1118 }
1119
1120
1121 inline
1122 void reset(PAR_TAG & p1, PAR_TAG const & p2)
1123 {
1124         p1 = static_cast<PAR_TAG>(p1 & ~p2);
1125 }
1126
1127 } // anon
1128
1129
1130 // Handle internal paragraph parsing -- layout already processed.
1131 void Paragraph::simpleLinuxDocOnePar(Buffer const & buf,
1132                                      ostream & os,
1133                                      LyXFont const & outerfont,
1134                                      OutputParams const & runparams,
1135                                      lyx::depth_type /*depth*/) const
1136 {
1137         LyXLayout_ptr const & style = layout();
1138
1139         string::size_type char_line_count = 5;     // Heuristic choice ;-)
1140
1141         // gets paragraph main font
1142         LyXFont font_old;
1143         bool desc_on;
1144         if (style->labeltype == LABEL_MANUAL) {
1145                 font_old = style->labelfont;
1146                 desc_on = true;
1147         } else {
1148                 font_old = style->font;
1149                 desc_on = false;
1150         }
1151
1152         LyXFont::FONT_FAMILY family_type = LyXFont::ROMAN_FAMILY;
1153         LyXFont::FONT_SERIES series_type = LyXFont::MEDIUM_SERIES;
1154         LyXFont::FONT_SHAPE  shape_type  = LyXFont::UP_SHAPE;
1155         bool is_em = false;
1156
1157         stack<PAR_TAG> tag_state;
1158         // parsing main loop
1159         for (pos_type i = 0; i < size(); ++i) {
1160
1161                 PAR_TAG tag_close = NONE;
1162                 list < PAR_TAG > tag_open;
1163
1164                 LyXFont const font = getFont(buf.params(), i, outerfont);
1165
1166                 if (font_old.family() != font.family()) {
1167                         switch (family_type) {
1168                         case LyXFont::SANS_FAMILY:
1169                                 tag_close |= SF;
1170                                 break;
1171                         case LyXFont::TYPEWRITER_FAMILY:
1172                                 tag_close |= TT;
1173                                 break;
1174                         default:
1175                                 break;
1176                         }
1177
1178                         family_type = font.family();
1179
1180                         switch (family_type) {
1181                         case LyXFont::SANS_FAMILY:
1182                                 tag_open.push_back(SF);
1183                                 break;
1184                         case LyXFont::TYPEWRITER_FAMILY:
1185                                 tag_open.push_back(TT);
1186                                 break;
1187                         default:
1188                                 break;
1189                         }
1190                 }
1191
1192                 if (font_old.series() != font.series()) {
1193                         switch (series_type) {
1194                         case LyXFont::BOLD_SERIES:
1195                                 tag_close |= BF;
1196                                 break;
1197                         default:
1198                                 break;
1199                         }
1200
1201                         series_type = font.series();
1202
1203                         switch (series_type) {
1204                         case LyXFont::BOLD_SERIES:
1205                                 tag_open.push_back(BF);
1206                                 break;
1207                         default:
1208                                 break;
1209                         }
1210
1211                 }
1212
1213                 if (font_old.shape() != font.shape()) {
1214                         switch (shape_type) {
1215                         case LyXFont::ITALIC_SHAPE:
1216                                 tag_close |= IT;
1217                                 break;
1218                         case LyXFont::SLANTED_SHAPE:
1219                                 tag_close |= SL;
1220                                 break;
1221                         default:
1222                                 break;
1223                         }
1224
1225                         shape_type = font.shape();
1226
1227                         switch (shape_type) {
1228                         case LyXFont::ITALIC_SHAPE:
1229                                 tag_open.push_back(IT);
1230                                 break;
1231                         case LyXFont::SLANTED_SHAPE:
1232                                 tag_open.push_back(SL);
1233                                 break;
1234                         default:
1235                                 break;
1236                         }
1237                 }
1238                 // handle <em> tag
1239                 if (font_old.emph() != font.emph()) {
1240                         if (font.emph() == LyXFont::ON) {
1241                                 tag_open.push_back(EM);
1242                                 is_em = true;
1243                         }
1244                         else if (is_em) {
1245                                 tag_close |= EM;
1246                                 is_em = false;
1247                         }
1248                 }
1249
1250                 list < PAR_TAG > temp;
1251                 while (!tag_state.empty() && tag_close) {
1252                         PAR_TAG k =  tag_state.top();
1253                         tag_state.pop();
1254                         os << "</" << tag_name(k) << '>';
1255                         if (tag_close & k)
1256                                 reset(tag_close,k);
1257                         else
1258                                 temp.push_back(k);
1259                 }
1260
1261                 for(list< PAR_TAG >::const_iterator j = temp.begin();
1262                     j != temp.end(); ++j) {
1263                         tag_state.push(*j);
1264                         os << '<' << tag_name(*j) << '>';
1265                 }
1266
1267                 for(list< PAR_TAG >::const_iterator j = tag_open.begin();
1268                     j != tag_open.end(); ++j) {
1269                         tag_state.push(*j);
1270                         os << '<' << tag_name(*j) << '>';
1271                 }
1272
1273                 char c = getChar(i);
1274
1275
1276                 if (c == Paragraph::META_INSET) {
1277                         getInset(i)->linuxdoc(buf, os, runparams);
1278                         font_old = font;
1279                         continue;
1280                 }
1281
1282                 if (style->latexparam() == "CDATA") {
1283                         // "TeX"-Mode on == > SGML-Mode on.
1284                         if (c != '\0')
1285                                 os << c;
1286                         ++char_line_count;
1287                 } else {
1288                         bool ws;
1289                         string str;
1290                         boost::tie(ws, str) = sgml::escapeChar(c);
1291                         if (ws && !isFreeSpacing()) {
1292                                 // in freespacing mode, spaces are
1293                                 // non-breaking characters
1294                                 if (desc_on) { // if char is ' ' then...
1295                                         ++char_line_count;
1296                                         sgmlLineBreak(os, char_line_count, 6);
1297                                         os << "</tag>";
1298                                         desc_on = false;
1299                                 } else  {
1300                                         sgmlLineBreak(os, char_line_count, 1);
1301                                         os << c;
1302                                 }
1303                         } else {
1304                                 os << str;
1305                                 char_line_count += str.length();
1306                         }
1307                 }
1308                 font_old = font;
1309         }
1310
1311         while (!tag_state.empty()) {
1312                 os << "</" << tag_name(tag_state.top()) << '>';
1313                 tag_state.pop();
1314         }
1315
1316         // resets description flag correctly
1317         if (desc_on) {
1318                 // <tag> not closed...
1319                 sgmlLineBreak(os, char_line_count, 6);
1320                 os << "</tag>";
1321         }
1322 }
1323
1324
1325 void Paragraph::simpleDocBookOnePar(Buffer const & buf,
1326                                     ostream & os,
1327                                     LyXFont const & outerfont,
1328                                     OutputParams const & runparams,
1329                                     lyx::depth_type depth,
1330                                     bool labelid) const
1331 {
1332         bool emph_flag = false;
1333
1334         LyXLayout_ptr const & style = layout();
1335         LyXLayout_ptr const & defaultstyle =
1336                 buf.params().getLyXTextClass().defaultLayout();
1337
1338         LyXFont font_old =
1339                 style->labeltype == LABEL_MANUAL ? style->labelfont : style->font;
1340
1341         int char_line_count = depth;
1342         bool label_closed = true;
1343         bool para_closed = true;
1344
1345         if (style->latextype == LATEX_ITEM_ENVIRONMENT) {
1346                 string ls = "";
1347                 Counters & counters = buf.params().getLyXTextClass().counters();
1348                 if (!style->free_spacing)
1349                         os << string(depth,' ');
1350                 if (!style->labeltag().empty()) {
1351                         os << "<" << style->labeltag() << ">\n";
1352                         label_closed = false;
1353                 } else {
1354                         if (!defaultstyle->latexparam().empty()) {
1355                                 counters.step("para");
1356                                 ls = tostr(counters.value("para"));
1357                                 ls = " id=\""
1358                                         + subst(defaultstyle->latexparam(), "#", ls) + '"';
1359                         }
1360                         os << "<" << style->itemtag() << ">\n"
1361                            << string(depth, ' ') << "<"
1362                            << defaultstyle->latexname() << ls << ">\n";
1363                         para_closed = false;
1364                 }
1365         }
1366
1367         // parsing main loop
1368         for (pos_type i = 0; i < size(); ++i) {
1369                 LyXFont font = getFont(buf.params(), i, outerfont);
1370
1371                 // handle <emphasis> tag
1372                 if (font_old.emph() != font.emph()) {
1373                         if (font.emph() == LyXFont::ON) {
1374                                 if (style->latexparam() == "CDATA")
1375                                         os << "]]>";
1376                                 os << "<emphasis>";
1377                                 if (style->latexparam() == "CDATA")
1378                                         os << "<![CDATA[";
1379                                 emph_flag = true;
1380                         } else if (i) {
1381                                 if (style->latexparam() == "CDATA")
1382                                         os << "]]>";
1383                                 os << "</emphasis>";
1384                                 if (style->latexparam() == "CDATA")
1385                                         os << "<![CDATA[";
1386                                 emph_flag = false;
1387                         }
1388                 }
1389
1390
1391                 if (isInset(i)) {
1392                         InsetOld const * inset = getInset(i);
1393                         // don't print the inset in position 0 if desc_on == 3 (label)
1394                         //if (i || desc_on != 3) {
1395                         if (!labelid) {
1396                                 if (style->latexparam() == "CDATA")
1397                                         os << "]]>";
1398                                 inset->docbook(buf, os, runparams);
1399                                 if (style->latexparam() == "CDATA")
1400                                         os << "<![CDATA[";
1401                         }
1402                 } else {
1403                         char c = getChar(i);
1404                         bool ws;
1405                         string str;
1406                         boost::tie(ws, str) = sgml::escapeChar(c);
1407
1408                         if (style->pass_thru) {
1409                                 os << c;
1410                         } else if (isFreeSpacing() || c != ' ') {
1411                                         os << str;
1412                         } else if (!style->labeltag().empty() && !label_closed) {
1413                                 ++char_line_count;
1414                                 os << "\n</" << style->labeltag() << "><"
1415                                    << style->itemtag() << "><"
1416                                    << defaultstyle->latexname() << ">";
1417                                 label_closed = true;
1418                                 para_closed = false;
1419                         } else {
1420                                 os << ' ';
1421                         }
1422                 }
1423                 font_old = font;
1424         }
1425
1426         if (emph_flag) {
1427                 if (style->latexparam() == "CDATA")
1428                         os << "]]>";
1429                 os << "</emphasis>";
1430                 if (style->latexparam() == "CDATA")
1431                         os << "<![CDATA[";
1432         }
1433
1434         // resets description flag correctly
1435         if (!label_closed) {
1436                 // <term> not closed...
1437                 os << "</" << style->labeltag() << ">\n<"
1438                    << style->itemtag() << "><"
1439                    << defaultstyle->latexname() << ">&nbsp;";
1440         }
1441         if (!para_closed) {
1442                 os << "\n" << string(depth, ' ') << "</"
1443                    << defaultstyle->latexname() << ">\n";
1444         }
1445         if (style->free_spacing)
1446                 os << '\n';
1447 }
1448
1449
1450 namespace {
1451
1452 /// return true if the char is a meta-character for an inset
1453 inline
1454 bool IsInsetChar(char c)
1455 {
1456         return (c == Paragraph::META_INSET);
1457 }
1458
1459 } // namespace anon
1460
1461
1462
1463 bool Paragraph::isHfill(pos_type pos) const
1464 {
1465         return IsInsetChar(getChar(pos))
1466                && getInset(pos)->lyxCode() == InsetOld::HFILL_CODE;
1467 }
1468
1469
1470 bool Paragraph::isInset(pos_type pos) const
1471 {
1472         return IsInsetChar(getChar(pos));
1473 }
1474
1475
1476 bool Paragraph::isNewline(pos_type pos) const
1477 {
1478         return IsInsetChar(getChar(pos))
1479                && getInset(pos)->lyxCode() == InsetOld::NEWLINE_CODE;
1480 }
1481
1482
1483 bool Paragraph::isSeparator(pos_type pos) const
1484 {
1485         return IsSeparatorChar(getChar(pos));
1486 }
1487
1488
1489 bool Paragraph::isLineSeparator(pos_type pos) const
1490 {
1491         value_type const c = getChar(pos);
1492         return IsLineSeparatorChar(c)
1493                 || (IsInsetChar(c) && getInset(pos) &&
1494                 getInset(pos)->isLineSeparator());
1495 }
1496
1497
1498 bool Paragraph::isKomma(pos_type pos) const
1499 {
1500         return IsKommaChar(getChar(pos));
1501 }
1502
1503
1504 /// Used by the spellchecker
1505 bool Paragraph::isLetter(pos_type pos) const
1506 {
1507         value_type const c = getChar(pos);
1508         if (IsLetterChar(c))
1509                 return true;
1510         if (isInset(pos))
1511                 return getInset(pos)->isLetter();
1512         // We want to pass the ' and escape chars to ispell
1513         string const extra = lyxrc.isp_esc_chars + '\'';
1514         return contains(extra, c);
1515 }
1516
1517
1518 bool Paragraph::isWord(pos_type pos) const
1519 {
1520         unsigned char const c = getChar(pos);
1521         return !(IsSeparatorChar(c)
1522                   || IsKommaChar(c)
1523                   || IsInsetChar(c));
1524 }
1525
1526
1527 Language const *
1528 Paragraph::getParLanguage(BufferParams const & bparams) const
1529 {
1530         if (!empty())
1531                 return getFirstFontSettings().language();
1532 #warning FIXME we should check the prev par as well (Lgb)
1533         return bparams.language;
1534 }
1535
1536
1537 bool Paragraph::isRightToLeftPar(BufferParams const & bparams) const
1538 {
1539         return lyxrc.rtl_support
1540                 && getParLanguage(bparams)->RightToLeft()
1541                 && !(inInset() && inInset()->owner() &&
1542                      inInset()->owner()->lyxCode() == InsetOld::ERT_CODE);
1543 }
1544
1545
1546 void Paragraph::changeLanguage(BufferParams const & bparams,
1547                                Language const * from, Language const * to)
1548 {
1549         for (pos_type i = 0; i < size(); ++i) {
1550                 LyXFont font = getFontSettings(bparams, i);
1551                 if (font.language() == from) {
1552                         font.setLanguage(to);
1553                         setFont(i, font);
1554                 }
1555         }
1556 }
1557
1558
1559 bool Paragraph::isMultiLingual(BufferParams const & bparams)
1560 {
1561         Language const * doc_language = bparams.language;
1562         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
1563         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
1564
1565         for (; cit != end; ++cit)
1566                 if (cit->font().language() != ignore_language &&
1567                     cit->font().language() != latex_language &&
1568                     cit->font().language() != doc_language)
1569                         return true;
1570         return false;
1571 }
1572
1573
1574 // Convert the paragraph to a string.
1575 // Used for building the table of contents
1576 string const Paragraph::asString(Buffer const & buffer,
1577                                  bool label) const
1578 {
1579         OutputParams runparams;
1580         return asString(buffer, runparams, label);
1581 }
1582
1583
1584 string const Paragraph::asString(Buffer const & buffer,
1585                                  OutputParams const & runparams,
1586                                  bool label) const
1587 {
1588 #if 0
1589         string s;
1590         if (label && !params().labelString().empty())
1591                 s += params().labelString() + ' ';
1592
1593         for (pos_type i = 0; i < size(); ++i) {
1594                 value_type c = getChar(i);
1595                 if (IsPrintable(c))
1596                         s += c;
1597                 else if (c == META_INSET &&
1598                          getInset(i)->lyxCode() == InsetOld::MATH_CODE) {
1599                         ostringstream os;
1600                         getInset(i)->plaintext(buffer, os, runparams);
1601                         s += subst(STRCONV(os.str()),'\n',' ');
1602                 }
1603         }
1604
1605         return s;
1606 #else
1607         // This should really be done by the caller and not here.
1608         string ret = asString(buffer, runparams, 0, size(), label);
1609         return subst(ret, '\n', ' ');
1610 #endif
1611 }
1612
1613
1614 string const Paragraph::asString(Buffer const & buffer,
1615                                  pos_type beg, pos_type end, bool label) const
1616 {
1617
1618         OutputParams const runparams;
1619         return asString(buffer, runparams, beg, end, label);
1620 }
1621
1622
1623 string const Paragraph::asString(Buffer const & buffer,
1624                                  OutputParams const & runparams,
1625                                  pos_type beg, pos_type end, bool label) const
1626 {
1627         ostringstream os;
1628
1629         if (beg == 0 && label && !params().labelString().empty())
1630                 os << params().labelString() << ' ';
1631
1632         for (pos_type i = beg; i < end; ++i) {
1633                 value_type const c = getUChar(buffer.params(), i);
1634                 if (IsPrintable(c))
1635                         os << c;
1636                 else if (c == META_INSET)
1637                         getInset(i)->plaintext(buffer, os, runparams);
1638         }
1639
1640         return os.str();
1641 }
1642
1643
1644 void Paragraph::setInsetOwner(UpdatableInset * inset)
1645 {
1646         pimpl_->inset_owner = inset;
1647         InsetList::iterator it = insetlist.begin();
1648         InsetList::iterator end = insetlist.end();
1649         for (; it != end; ++it)
1650                 if (it->inset)
1651                         it->inset->setOwner(inset);
1652 }
1653
1654
1655 void Paragraph::setContentsFromPar(Paragraph const & par)
1656 {
1657         pimpl_->setContentsFromPar(par);
1658 }
1659
1660
1661 void Paragraph::trackChanges(Change::Type type)
1662 {
1663         pimpl_->trackChanges(type);
1664 }
1665
1666
1667 void Paragraph::untrackChanges()
1668 {
1669         pimpl_->untrackChanges();
1670 }
1671
1672
1673 void Paragraph::cleanChanges()
1674 {
1675         pimpl_->cleanChanges();
1676 }
1677
1678
1679 Change::Type Paragraph::lookupChange(lyx::pos_type pos) const
1680 {
1681         BOOST_ASSERT(!size() || pos < size());
1682         return pimpl_->lookupChange(pos);
1683 }
1684
1685
1686 Change const Paragraph::lookupChangeFull(lyx::pos_type pos) const
1687 {
1688         BOOST_ASSERT(!size() || pos < size());
1689         return pimpl_->lookupChangeFull(pos);
1690 }
1691
1692
1693 bool Paragraph::isChanged(pos_type start, pos_type end) const
1694 {
1695         return pimpl_->isChanged(start, end);
1696 }
1697
1698
1699 bool Paragraph::isChangeEdited(pos_type start, pos_type end) const
1700 {
1701         return pimpl_->isChangeEdited(start, end);
1702 }
1703
1704
1705 void Paragraph::setChange(lyx::pos_type pos, Change::Type type)
1706 {
1707         pimpl_->setChange(pos, type);
1708
1709 }
1710
1711
1712 void Paragraph::markErased()
1713 {
1714         pimpl_->markErased();
1715 }
1716
1717
1718 void Paragraph::acceptChange(pos_type start, pos_type end)
1719 {
1720         return pimpl_->acceptChange(start, end);
1721 }
1722
1723
1724 void Paragraph::rejectChange(pos_type start, pos_type end)
1725 {
1726         return pimpl_->rejectChange(start, end);
1727 }
1728
1729
1730 Paragraph::value_type Paragraph::getChar(pos_type pos) const
1731 {
1732         // This is in the critical path!
1733         pos_type const siz = text_.size();
1734
1735         BOOST_ASSERT(0 <= pos);
1736         BOOST_ASSERT(pos <= siz);
1737
1738         if (pos == siz) {
1739                 lyxerr << "getChar() on pos " << pos << " in par id "
1740                        << id() << " of size " << siz
1741                        << "  is a bit silly !" << endl;
1742                 BOOST_ASSERT(false);
1743                 return '\0';
1744         }
1745
1746         return text_[pos];
1747 }
1748
1749
1750 int Paragraph::id() const
1751 {
1752         return pimpl_->id_;
1753 }
1754
1755
1756 LyXLayout_ptr const & Paragraph::layout() const
1757 {
1758 /*
1759         InsetOld * inset = inInset();
1760         if (inset && inset->lyxCode() == InsetOld::ENVIRONMENT_CODE)
1761                 return static_cast<InsetEnvironment*>(inset)->layout();
1762 */
1763         return layout_;
1764 }
1765
1766
1767 void Paragraph::layout(LyXLayout_ptr const & new_layout)
1768 {
1769         layout_ = new_layout;
1770 }
1771
1772
1773 UpdatableInset * Paragraph::inInset() const
1774 {
1775         return pimpl_->inset_owner;
1776 }
1777
1778
1779 void Paragraph::clearContents()
1780 {
1781         text_.clear();
1782 }
1783
1784
1785 void Paragraph::setChar(pos_type pos, value_type c)
1786 {
1787         text_[pos] = c;
1788 }
1789
1790
1791 ParagraphParameters & Paragraph::params()
1792 {
1793         return pimpl_->params;
1794 }
1795
1796
1797 ParagraphParameters const & Paragraph::params() const
1798 {
1799         return pimpl_->params;
1800 }
1801
1802
1803 bool Paragraph::isFreeSpacing() const
1804 {
1805         if (layout()->free_spacing)
1806                 return true;
1807
1808         // for now we just need this, later should we need this in some
1809         // other way we can always add a function to InsetOld too.
1810         if (pimpl_->inset_owner && pimpl_->inset_owner->owner())
1811                 return pimpl_->inset_owner->owner()->lyxCode() == InsetOld::ERT_CODE;
1812         return false;
1813 }
1814
1815
1816 bool Paragraph::allowEmpty() const
1817 {
1818         if (layout()->keepempty)
1819                 return true;
1820         if (pimpl_->inset_owner && pimpl_->inset_owner->owner())
1821                 return pimpl_->inset_owner->owner()->lyxCode() == InsetOld::ERT_CODE;
1822         return false;
1823 }
1824
1825
1826 RowList::iterator Paragraph::getRow(pos_type pos)
1827 {
1828         RowList::iterator rit = rows.end();
1829         RowList::iterator const begin = rows.begin();
1830
1831         for (--rit; rit != begin && rit->pos() > pos; --rit)
1832                 ;
1833
1834         return rit;
1835 }
1836
1837
1838 unsigned char Paragraph::transformChar(unsigned char c, pos_type pos) const
1839 {
1840         if (!Encodings::is_arabic(c))
1841                 if (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 && IsDigit(c))
1842                         return c + (0xb0 - '0');
1843                 else
1844                         return c;
1845
1846         unsigned char const prev_char = pos > 0 ? getChar(pos - 1) : ' ';
1847         unsigned char next_char = ' ';
1848
1849         for (pos_type i = pos + 1, end = size(); i < end; ++i) {
1850                 unsigned char const par_char = getChar(i);
1851                 if (!Encodings::IsComposeChar_arabic(par_char)) {
1852                         next_char = par_char;
1853                         break;
1854                 }
1855         }
1856
1857         if (Encodings::is_arabic(next_char)) {
1858                 if (Encodings::is_arabic(prev_char) &&
1859                         !Encodings::is_arabic_special(prev_char))
1860                         return Encodings::TransformChar(c, Encodings::FORM_MEDIAL);
1861                 else
1862                         return Encodings::TransformChar(c, Encodings::FORM_INITIAL);
1863         } else {
1864                 if (Encodings::is_arabic(prev_char) &&
1865                         !Encodings::is_arabic_special(prev_char))
1866                         return Encodings::TransformChar(c, Encodings::FORM_FINAL);
1867                 else
1868                         return Encodings::TransformChar(c, Encodings::FORM_ISOLATED);
1869         }
1870 }