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 "LaTeXFeatures.h"
  31 #include "lyxfont.h"
  32 #include "lyxrc.h"
  33 #include "lyxrow.h"
  34 #include "outputparams.h"
  35 #include "paragraph_funcs.h"
  36 #include "ParagraphList_fwd.h"
  37 #include "sgml.h"
  38 #include "texrow.h"
  39 #include "vspace.h"
  40
  41 #include "insets/insetbibitem.h"
  42 #include "insets/insetoptarg.h"
  43
  44 #include "support/lstrings.h"
  45 #include "support/textutils.h"
  46 #include "support/convert.h"
  47 #include "support/unicode.h"
  48
  49 #include <boost/tuple/tuple.hpp>
  50 #include <boost/bind.hpp>
  51
  52 #include <algorithm>
  53 #include <list>
  54 #include <stack>
  55 #include <sstream>
  56
  57 using lyx::docstring;
  58 using lyx::odocstream;
  59 using lyx::pos_type;
  60 using lyx::char_type;
  61
  62 using lyx::support::subst;
  63
  64 using std::distance;
  65 using std::endl;
  66 using std::list;
  67 using std::stack;
  68 using std::string;
  69 using std::ostream;
  70 using std::ostringstream;
  71
  72
  73 Paragraph::Paragraph()
  74         : begin_of_body_(0), pimpl_(new Paragraph::Pimpl(this))
  75 {
  76         itemdepth = 0;
  77         params().clear();
  78 }
  79
  80
  81 Paragraph::Paragraph(Paragraph const & par)
  82         :       itemdepth(par.itemdepth), insetlist(par.insetlist),
  83                 dim_(par.dim_),
  84                 rows_(par.rows_), rowSignature_(par.rowSignature_),
  85                 layout_(par.layout_),
  86                 text_(par.text_), begin_of_body_(par.begin_of_body_),
  87           pimpl_(new Paragraph::Pimpl(*par.pimpl_, this))
  88 {
  89         //lyxerr << "Paragraph::Paragraph(Paragraph const&)" << endl;
  90         InsetList::iterator it = insetlist.begin();
  91         InsetList::iterator end = insetlist.end();
  92         for (; it != end; ++it)
  93                 it->inset = it->inset->clone().release();
  94 }
  95
  96
  97 Paragraph & Paragraph::operator=(Paragraph const & par)
  98 {
  99         // needed as we will destroy the pimpl_ before copying it
 100         if (&par != this) {
 101                 itemdepth = par.itemdepth;
 102
 103                 insetlist = par.insetlist;
 104                 InsetList::iterator it = insetlist.begin();
 105                 InsetList::iterator end = insetlist.end();
 106                 for (; it != end; ++it)
 107                         it->inset = it->inset->clone().release();
 108
 109                 rows_ = par.rows_;
 110                 dim_ = par.dim_;
 111                 rowSignature_ = par.rowSignature_;
 112                 layout_ = par.layout();
 113                 text_ = par.text_;
 114                 begin_of_body_ = par.begin_of_body_;
 115
 116                 delete pimpl_;
 117                 pimpl_ = new Pimpl(*par.pimpl_, this);
 118         }
 119         return *this;
 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
 164                 Change change = pimpl_->lookupChange(i);
 165                 Changes::lyxMarkChange(os, column, curtime, running_change, change);
 166                 running_change = change;
 167
 168                 if (i == size())
 169                         break;
 170
 171                 // Write font changes
 172                 LyXFont font2 = getFontSettings(bparams, i);
 173                 if (font2 != font1) {
 174                         font2.lyxWriteChanges(font1, os);
 175                         column = 0;
 176                         font1 = font2;
 177                 }
 178
 179                 value_type const c = getChar(i);
 180                 switch (c) {
 181                 case META_INSET:
 182                 {
 183                         InsetBase const * inset = getInset(i);
 184                         if (inset)
 185                                 if (inset->directWrite()) {
 186                                         // international char, let it write
 187                                         // code directly so it's shorter in
 188                                         // the file
 189                                         inset->write(buf, os);
 190                                 } else {
 191                                         if (i)
 192                                                 os << '\n';
 193                                         os << "\\begin_inset ";
 194                                         inset->write(buf, os);
 195                                         os << "\n\\end_inset\n\n";
 196                                         column = 0;
 197                                 }
 198                 }
 199                 break;
 200                 case '\\':
 201                         os << "\n\\backslash\n";
 202                         column = 0;
 203                         break;
 204                 case '.':
 205                         if (i + 1 < size() && getChar(i + 1) == ' ') {
 206                                 os << ".\n";
 207                                 column = 0;
 208                         } else
 209                                 os << '.';
 210                         break;
 211                 default:
 212                         if ((column > 70 && c == ' ')
 213                             || column > 79) {
 214                                 os << '\n';
 215                                 column = 0;
 216                         }
 217                         // this check is to amend a bug. LyX sometimes
 218                         // inserts '\0' this could cause problems.
 219                         if (c != '\0') {
 220                                 std::vector<char> tmp = ucs4_to_utf8(c);
 221                                 tmp.push_back('\0');
 222                                 os << &tmp[0];
 223                         } else
 224                                 lyxerr << "ERROR (Paragraph::writeFile):"
 225                                         " NULL char in structure." << endl;
 226                         ++column;
 227                         break;
 228                 }
 229         }
 230
 231         os << "\n\\end_layout\n";
 232 }
 233
 234
 235 void Paragraph::validate(LaTeXFeatures & features) const
 236 {
 237         pimpl_->validate(features, *layout());
 238 }
 239
 240
 241 bool Paragraph::erase(pos_type pos, bool trackChanges)
 242 {
 243         return pimpl_->erase(pos, trackChanges);
 244 }
 245
 246
 247 int Paragraph::erase(pos_type start, pos_type end, bool trackChanges)
 248 {
 249         return pimpl_->erase(start, end, trackChanges);
 250 }
 251
 252
 253 void Paragraph::insert(pos_type start, string const & str,
 254                        LyXFont const & font)
 255 {
 256         for (size_t i = 0, n = str.size(); i != n ; ++i)
 257                 // FIXME: change tracking (MG)
 258                 insertChar(start + i, str[i], font, Change(Change::INSERTED));
 259 }
 260
 261
 262 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
 263                            Change const & change)
 264 {
 265         pimpl_->insertChar(pos, c, change);
 266 }
 267
 268
 269 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
 270                            LyXFont const & font, Change const & change)
 271 {
 272         pimpl_->insertChar(pos, c, change);
 273         setFont(pos, font);
 274 }
 275
 276
 277 void Paragraph::insertInset(pos_type pos, InsetBase * inset, Change const & change)
 278 {
 279         pimpl_->insertInset(pos, inset, change);
 280 }
 281
 282
 283 void Paragraph::insertInset(pos_type pos, InsetBase * inset,
 284                             LyXFont const & font, Change const & change)
 285 {
 286         pimpl_->insertInset(pos, inset, change);
 287         setFont(pos, font);
 288 }
 289
 290
 291 bool Paragraph::insetAllowed(InsetBase_code code)
 292 {
 293         return !pimpl_->inset_owner || pimpl_->inset_owner->insetAllowed(code);
 294 }
 295
 296
 297 // Gets uninstantiated font setting at position.
 298 LyXFont const Paragraph::getFontSettings(BufferParams const & bparams,
 299                                          pos_type pos) const
 300 {
 301         if (pos > size()) {
 302                 lyxerr << " pos: " << pos << " size: " << size() << endl;
 303                 BOOST_ASSERT(pos <= size());
 304         }
 305
 306         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 307         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
 308         for (; cit != end; ++cit)
 309                 if (cit->pos() >= pos)
 310                         break;
 311
 312         if (cit != end)
 313                 return cit->font();
 314
 315         if (pos == size() && !empty())
 316                 return getFontSettings(bparams, pos - 1);
 317
 318         return LyXFont(LyXFont::ALL_INHERIT, getParLanguage(bparams));
 319 }
 320
 321
 322 FontSpan Paragraph::fontSpan(lyx::pos_type pos) const
 323 {
 324         BOOST_ASSERT(pos <= size());
 325         lyx::pos_type start = 0;
 326
 327         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 328         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
 329         for (; cit != end; ++cit) {
 330                 if (cit->pos() >= pos) {
 331                         if (pos >= beginOfBody())
 332                                 return FontSpan(std::max(start, beginOfBody()),
 333                                                 cit->pos());
 334                         else
 335                                 return FontSpan(start,
 336                                                 std::min(beginOfBody() - 1,
 337                                                          cit->pos()));
 338                 }
 339                 start = cit->pos() + 1;
 340         }
 341
 342         // This should not happen, but if so, we take no chances.
 343         //lyxerr << "Paragraph::getEndPosOfFontSpan: This should not happen!"
 344         //      << endl;
 345         return FontSpan(pos, pos);
 346 }
 347
 348
 349 // Gets uninstantiated font setting at position 0
 350 LyXFont const Paragraph::getFirstFontSettings(BufferParams const & bparams) const
 351 {
 352         if (!empty() && !pimpl_->fontlist.empty())
 353                 return pimpl_->fontlist[0].font();
 354
 355         return LyXFont(LyXFont::ALL_INHERIT, bparams.language);
 356 }
 357
 358
 359 // Gets the fully instantiated font at a given position in a paragraph
 360 // This is basically the same function as LyXText::GetFont() in text2.C.
 361 // The difference is that this one is used for generating the LaTeX file,
 362 // and thus cosmetic "improvements" are disallowed: This has to deliver
 363 // the true picture of the buffer. (Asger)
 364 LyXFont const Paragraph::getFont(BufferParams const & bparams, pos_type pos,
 365                                  LyXFont const & outerfont) const
 366 {
 367         BOOST_ASSERT(pos >= 0);
 368
 369         LyXLayout_ptr const & lout = layout();
 370
 371         pos_type const body_pos = beginOfBody();
 372
 373         LyXFont layoutfont;
 374         if (pos < body_pos)
 375                 layoutfont = lout->labelfont;
 376         else
 377                 layoutfont = lout->font;
 378
 379         LyXFont font = getFontSettings(bparams, pos);
 380         font.realize(layoutfont);
 381         font.realize(outerfont);
 382         font.realize(bparams.getFont());
 383
 384         return font;
 385 }
 386
 387
 388 LyXFont const Paragraph::getLabelFont
 389         (BufferParams const & bparams, LyXFont const & outerfont) const
 390 {
 391         LyXFont tmpfont = layout()->labelfont;
 392         tmpfont.setLanguage(getParLanguage(bparams));
 393         tmpfont.realize(outerfont);
 394         tmpfont.realize(bparams.getFont());
 395         return tmpfont;
 396 }
 397
 398
 399 LyXFont const Paragraph::getLayoutFont
 400         (BufferParams const & bparams, LyXFont const & outerfont) const
 401 {
 402         LyXFont tmpfont = layout()->font;
 403         tmpfont.setLanguage(getParLanguage(bparams));
 404         tmpfont.realize(outerfont);
 405         tmpfont.realize(bparams.getFont());
 406         return tmpfont;
 407 }
 408
 409
 410 /// Returns the height of the highest font in range
 411 LyXFont_size Paragraph::highestFontInRange
 412         (pos_type startpos, pos_type endpos, LyXFont_size def_size) const
 413 {
 414         if (pimpl_->fontlist.empty())
 415                 return def_size;
 416
 417         Pimpl::FontList::const_iterator end_it = pimpl_->fontlist.begin();
 418         Pimpl::FontList::const_iterator const end = pimpl_->fontlist.end();
 419         for (; end_it != end; ++end_it) {
 420                 if (end_it->pos() >= endpos)
 421                         break;
 422         }
 423
 424         if (end_it != end)
 425                 ++end_it;
 426
 427         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 428         for (; cit != end; ++cit) {
 429                 if (cit->pos() >= startpos)
 430                         break;
 431         }
 432
 433         LyXFont::FONT_SIZE maxsize = LyXFont::SIZE_TINY;
 434         for (; cit != end_it; ++cit) {
 435                 LyXFont::FONT_SIZE size = cit->font().size();
 436                 if (size == LyXFont::INHERIT_SIZE)
 437                         size = def_size;
 438                 if (size > maxsize && size <= LyXFont::SIZE_HUGER)
 439                         maxsize = size;
 440         }
 441         return maxsize;
 442 }
 443
 444
 445 Paragraph::value_type
 446 Paragraph::getUChar(BufferParams const & bparams, pos_type pos) const
 447 {
 448         value_type c = getChar(pos);
 449         if (!lyxrc.rtl_support)
 450                 return c;
 451
 452         value_type uc = c;
 453         switch (c) {
 454         case '(':
 455                 uc = ')';
 456                 break;
 457         case ')':
 458                 uc = '(';
 459                 break;
 460         case '[':
 461                 uc = ']';
 462                 break;
 463         case ']':
 464                 uc = '[';
 465                 break;
 466         case '{':
 467                 uc = '}';
 468                 break;
 469         case '}':
 470                 uc = '{';
 471                 break;
 472         case '<':
 473                 uc = '>';
 474                 break;
 475         case '>':
 476                 uc = '<';
 477                 break;
 478         }
 479         if (uc != c && getFontSettings(bparams, pos).isRightToLeft())
 480                 return uc;
 481         else
 482                 return c;
 483 }
 484
 485
 486 void Paragraph::setFont(pos_type pos, LyXFont const & font)
 487 {
 488         BOOST_ASSERT(pos <= size());
 489
 490         // First, reduce font against layout/label font
 491         // Update: The setCharFont() routine in text2.C already
 492         // reduces font, so we don't need to do that here. (Asger)
 493         // No need to simplify this because it will disappear
 494         // in a new kernel. (Asger)
 495         // Next search font table
 496
 497         Pimpl::FontList::iterator beg = pimpl_->fontlist.begin();
 498         Pimpl::FontList::iterator it = beg;
 499         Pimpl::FontList::iterator endit = pimpl_->fontlist.end();
 500         for (; it != endit; ++it) {
 501                 if (it->pos() >= pos)
 502                         break;
 503         }
 504         size_t const i = distance(beg, it);
 505         bool notfound = (it == endit);
 506
 507         if (!notfound && pimpl_->fontlist[i].font() == font)
 508                 return;
 509
 510         bool begin = pos == 0 || notfound ||
 511                 (i > 0 && pimpl_->fontlist[i - 1].pos() == pos - 1);
 512         // Is position pos is a beginning of a font block?
 513         bool end = !notfound && pimpl_->fontlist[i].pos() == pos;
 514         // Is position pos is the end of a font block?
 515         if (begin && end) { // A single char block
 516                 if (i + 1 < pimpl_->fontlist.size() &&
 517                     pimpl_->fontlist[i + 1].font() == font) {
 518                         // Merge the singleton block with the next block
 519                         pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i);
 520                         if (i > 0 && pimpl_->fontlist[i - 1].font() == font)
 521                                 pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i - 1);
 522                 } else if (i > 0 && pimpl_->fontlist[i - 1].font() == font) {
 523                         // Merge the singleton block with the previous block
 524                         pimpl_->fontlist[i - 1].pos(pos);
 525                         pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i);
 526                 } else
 527                         pimpl_->fontlist[i].font(font);
 528         } else if (begin) {
 529                 if (i > 0 && pimpl_->fontlist[i - 1].font() == font)
 530                         pimpl_->fontlist[i - 1].pos(pos);
 531                 else
 532                         pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i,
 533                                         Pimpl::FontTable(pos, font));
 534         } else if (end) {
 535                 pimpl_->fontlist[i].pos(pos - 1);
 536                 if (!(i + 1 < pimpl_->fontlist.size() &&
 537                       pimpl_->fontlist[i + 1].font() == font))
 538                         pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i + 1,
 539                                         Pimpl::FontTable(pos, font));
 540         } else { // The general case. The block is splitted into 3 blocks
 541                 pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i,
 542                                 Pimpl::FontTable(pos - 1, pimpl_->fontlist[i].font()));
 543                 pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i + 1,
 544                                 Pimpl::FontTable(pos, font));
 545         }
 546 }
 547
 548
 549 void Paragraph::makeSameLayout(Paragraph const & par)
 550 {
 551         layout(par.layout());
 552         // move to pimpl?
 553         params() = par.params();
 554 }
 555
 556
 557 int Paragraph::stripLeadingSpaces()
 558 {
 559         if (isFreeSpacing())
 560                 return 0;
 561
 562         int i = 0;
 563         while (!empty() && (isNewline(0) || isLineSeparator(0))
 564                 && (lookupChange(0).type != Change::DELETED)) {
 565                 erase(0, false); // no change tracking here
 566                 ++i;
 567         }
 568
 569         return i;
 570 }
 571
 572
 573 bool Paragraph::hasSameLayout(Paragraph const & par) const
 574 {
 575         return par.layout() == layout() && params().sameLayout(par.params());
 576 }
 577
 578
 579 Paragraph::depth_type Paragraph::getDepth() const
 580 {
 581         return params().depth();
 582 }
 583
 584
 585 Paragraph::depth_type Paragraph::getMaxDepthAfter() const
 586 {
 587         if (layout()->isEnvironment())
 588                 return params().depth() + 1;
 589         else
 590                 return params().depth();
 591 }
 592
 593
 594 char Paragraph::getAlign() const
 595 {
 596         return params().align();
 597 }
 598
 599
 600 string const & Paragraph::getLabelstring() const
 601 {
 602         return params().labelString();
 603 }
 604
 605
 606 // the next two functions are for the manual labels
 607 string const Paragraph::getLabelWidthString() const
 608 {
 609         if (!params().labelWidthString().empty())
 610                 return params().labelWidthString();
 611         else
 612                 return lyx::to_utf8(_("Senseless with this layout!"));
 613 }
 614
 615
 616 void Paragraph::setLabelWidthString(string const & s)
 617 {
 618         params().labelWidthString(s);
 619 }
 620
 621
 622 void Paragraph::applyLayout(LyXLayout_ptr const & new_layout)
 623 {
 624         layout(new_layout);
 625         params().labelWidthString(string());
 626         params().align(LYX_ALIGN_LAYOUT);
 627         params().spacing(Spacing(Spacing::Default));
 628 }
 629
 630
 631 pos_type Paragraph::beginOfBody() const
 632 {
 633         return begin_of_body_;
 634 }
 635
 636
 637 void Paragraph::setBeginOfBody()
 638 {
 639         if (layout()->labeltype != LABEL_MANUAL) {
 640                 begin_of_body_ = 0;
 641                 return;
 642         }
 643
 644         // Unroll the first two cycles of the loop
 645         // and remember the previous character to
 646         // remove unnecessary getChar() calls
 647         pos_type i = 0;
 648         pos_type end = size();
 649         if (i < end && !isNewline(i)) {
 650                 ++i;
 651                 char previous_char = 0;
 652                 char temp = 0;
 653                 if (i < end) {
 654                         previous_char = text_[i];
 655                         if (!isNewline(i)) {
 656                                 ++i;
 657                                 while (i < end && previous_char != ' ') {
 658                                         temp = text_[i];
 659                                         if (isNewline(i))
 660                                                 break;
 661                                         ++i;
 662                                         previous_char = temp;
 663                                 }
 664                         }
 665                 }
 666         }
 667
 668         begin_of_body_ = i;
 669 }
 670
 671
 672 // returns -1 if inset not found
 673 int Paragraph::getPositionOfInset(InsetBase const * inset) const
 674 {
 675         // Find the entry.
 676         InsetList::const_iterator it = insetlist.begin();
 677         InsetList::const_iterator end = insetlist.end();
 678         for (; it != end; ++it)
 679                 if (it->inset == inset)
 680                         return it->pos;
 681         return -1;
 682 }
 683
 684
 685 InsetBibitem * Paragraph::bibitem() const
 686 {
 687         if (!insetlist.empty()) {
 688                 InsetBase * inset = insetlist.begin()->inset;
 689                 if (inset->lyxCode() == InsetBase::BIBITEM_CODE)
 690                         return static_cast<InsetBibitem *>(inset);
 691         }
 692         return 0;
 693 }
 694
 695
 696 bool Paragraph::forceDefaultParagraphs() const
 697 {
 698         return inInset() && inInset()->forceDefaultParagraphs(0);
 699 }
 700
 701
 702 namespace {
 703
 704 // paragraphs inside floats need different alignment tags to avoid
 705 // unwanted space
 706
 707 bool noTrivlistCentering(InsetBase::Code code)
 708 {
 709         return code == InsetBase::FLOAT_CODE || code == InsetBase::WRAP_CODE;
 710 }
 711
 712
 713 string correction(string const & orig)
 714 {
 715         if (orig == "flushleft")
 716                 return "raggedright";
 717         if (orig == "flushright")
 718                 return "raggedleft";
 719         if (orig == "center")
 720                 return "centering";
 721         return orig;
 722 }
 723
 724
 725 string const corrected_env(string const & suffix, string const & env,
 726         InsetBase::Code code)
 727 {
 728         string output = suffix + "{";
 729         if (noTrivlistCentering(code))
 730                 output += correction(env);
 731         else
 732                 output += env;
 733         return output + "}";
 734 }
 735
 736 } // namespace anon
 737
 738
 739 // This could go to ParagraphParameters if we want to
 740 int Paragraph::startTeXParParams(BufferParams const & bparams,
 741                                  odocstream & os, bool moving_arg) const
 742 {
 743         int column = 0;
 744
 745         if (params().noindent()) {
 746                 os << "\\noindent ";
 747                 column += 10;
 748         }
 749
 750         switch (params().align()) {
 751         case LYX_ALIGN_NONE:
 752         case LYX_ALIGN_BLOCK:
 753         case LYX_ALIGN_LAYOUT:
 754         case LYX_ALIGN_SPECIAL:
 755                 break;
 756         case LYX_ALIGN_LEFT:
 757         case LYX_ALIGN_RIGHT:
 758         case LYX_ALIGN_CENTER:
 759                 if (moving_arg) {
 760                         os << "\\protect";
 761                         column += 8;
 762                 }
 763                 break;
 764         }
 765
 766         switch (params().align()) {
 767         case LYX_ALIGN_NONE:
 768         case LYX_ALIGN_BLOCK:
 769         case LYX_ALIGN_LAYOUT:
 770         case LYX_ALIGN_SPECIAL:
 771                 break;
 772         case LYX_ALIGN_LEFT: {
 773                 string output;
 774                 if (getParLanguage(bparams)->babel() != "hebrew")
 775                         output = corrected_env("\\begin", "flushleft", ownerCode());
 776                 else
 777                         output = corrected_env("\\begin", "flushright", ownerCode());
 778                 os << lyx::from_ascii(output);
 779                 column += output.size();
 780                 break;
 781         } case LYX_ALIGN_RIGHT: {
 782                 string output;
 783                 if (getParLanguage(bparams)->babel() != "hebrew")
 784                         output = corrected_env("\\begin", "flushright", ownerCode());
 785                 else
 786                         output = corrected_env("\\begin", "flushleft", ownerCode());
 787                 os << lyx::from_ascii(output);
 788                 column += output.size();
 789                 break;
 790         } case LYX_ALIGN_CENTER: {
 791                 string output;
 792                 output = corrected_env("\\begin", "center", ownerCode());
 793                 os << lyx::from_ascii(output);
 794                 column += output.size();
 795                 break;
 796         }
 797         }
 798
 799         return column;
 800 }
 801
 802
 803 // This could go to ParagraphParameters if we want to
 804 int Paragraph::endTeXParParams(BufferParams const & bparams,
 805                                odocstream & os, bool moving_arg) const
 806 {
 807         int column = 0;
 808
 809         switch (params().align()) {
 810         case LYX_ALIGN_NONE:
 811         case LYX_ALIGN_BLOCK:
 812         case LYX_ALIGN_LAYOUT:
 813         case LYX_ALIGN_SPECIAL:
 814                 break;
 815         case LYX_ALIGN_LEFT:
 816         case LYX_ALIGN_RIGHT:
 817         case LYX_ALIGN_CENTER:
 818                 if (moving_arg) {
 819                         os << "\\protect";
 820                         column = 8;
 821                 }
 822                 break;
 823         }
 824
 825         switch (params().align()) {
 826         case LYX_ALIGN_NONE:
 827         case LYX_ALIGN_BLOCK:
 828         case LYX_ALIGN_LAYOUT:
 829         case LYX_ALIGN_SPECIAL:
 830                 break;
 831         case LYX_ALIGN_LEFT: {
 832                 string output;
 833                 if (getParLanguage(bparams)->babel() != "hebrew")
 834                         output = corrected_env("\\par\\end", "flushleft", ownerCode());
 835                 else
 836                         output = corrected_env("\\par\\end", "flushright", ownerCode());
 837                 os << lyx::from_ascii(output);
 838                 column += output.size();
 839                 break;
 840         } case LYX_ALIGN_RIGHT: {
 841                 string output;
 842                 if (getParLanguage(bparams)->babel() != "hebrew")
 843                         output = corrected_env("\\par\\end", "flushright", ownerCode());
 844                 else
 845                         output = corrected_env("\\par\\end", "flushleft", ownerCode());
 846                 os << lyx::from_ascii(output);
 847                 column += output.size();
 848                 break;
 849         } case LYX_ALIGN_CENTER: {
 850                 string output;
 851                 output = corrected_env("\\par\\end", "center", ownerCode());
 852                 os << lyx::from_ascii(output);
 853                 column += output.size();
 854                 break;
 855         }
 856         }
 857
 858         return column;
 859 }
 860
 861
 862 // This one spits out the text of the paragraph
 863 bool Paragraph::simpleTeXOnePar(Buffer const & buf,
 864                                 BufferParams const & bparams,
 865                                 LyXFont const & outerfont,
 866                                 odocstream & os, TexRow & texrow,
 867                                 OutputParams const & runparams) const
 868 {
 869         lyxerr[Debug::LATEX] << "SimpleTeXOnePar...     " << this << endl;
 870
 871         bool return_value = false;
 872
 873         LyXLayout_ptr style;
 874
 875         // well we have to check if we are in an inset with unlimited
 876         // length (all in one row) if that is true then we don't allow
 877         // any special options in the paragraph and also we don't allow
 878         // any environment other then "Standard" to be valid!
 879         bool asdefault = forceDefaultParagraphs();
 880
 881         if (asdefault) {
 882                 style = bparams.getLyXTextClass().defaultLayout();
 883         } else {
 884                 style = layout();
 885         }
 886
 887         LyXFont basefont;
 888
 889         LaTeXFeatures features(buf, bparams, runparams);
 890
 891         // output change tracking marks only if desired,
 892         // if dvipost is installed,
 893         // and with dvi/ps (other formats don't work)
 894         bool const output = bparams.outputChanges
 895                 && runparams.flavor == OutputParams::LATEX
 896                 && features.isAvailable("dvipost");
 897
 898         // Maybe we have to create a optional argument.
 899         pos_type body_pos = beginOfBody();
 900         unsigned int column = 0;
 901
 902         if (body_pos > 0) {
 903                 // the optional argument is kept in curly brackets in
 904                 // case it contains a ']'
 905                 os << "[{";
 906                 column += 2;
 907                 basefont = getLabelFont(bparams, outerfont);
 908         } else {
 909                 basefont = getLayoutFont(bparams, outerfont);
 910         }
 911
 912         // Which font is currently active?
 913         LyXFont running_font(basefont);
 914         // Do we have an open font change?
 915         bool open_font = false;
 916
 917         Change::Type running_change = Change::UNCHANGED;
 918
 919         texrow.start(id(), 0);
 920
 921         // if the paragraph is empty, the loop will not be entered at all
 922         if (empty()) {
 923                 if (style->isCommand()) {
 924                         os << '{';
 925                         ++column;
 926                 }
 927                 if (!asdefault)
 928                         column += startTeXParParams(bparams, os,
 929                                                     runparams.moving_arg);
 930         }
 931
 932         for (pos_type i = 0; i < size(); ++i) {
 933                 ++column;
 934                 // First char in paragraph or after label?
 935                 if (i == body_pos) {
 936                         if (body_pos > 0) {
 937                                 if (open_font) {
 938                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
 939                                         open_font = false;
 940                                 }
 941                                 basefont = getLayoutFont(bparams, outerfont);
 942                                 running_font = basefont;
 943                                 os << "}] ";
 944                                 column +=3;
 945                         }
 946                         if (style->isCommand()) {
 947                                 os << '{';
 948                                 ++column;
 949                         }
 950
 951                         if (!asdefault)
 952                                 column += startTeXParParams(bparams, os,
 953                                                             runparams.moving_arg);
 954                 }
 955
 956                 value_type c = getChar(i);
 957
 958                 // Fully instantiated font
 959                 LyXFont font = getFont(bparams, i, outerfont);
 960
 961                 LyXFont const last_font = running_font;
 962
 963                 // Spaces at end of font change are simulated to be
 964                 // outside font change, i.e. we write "\textXX{text} "
 965                 // rather than "\textXX{text }". (Asger)
 966                 if (open_font && c == ' ' && i <= size() - 2) {
 967                         LyXFont const & next_font = getFont(bparams, i + 1, outerfont);
 968                         if (next_font != running_font && next_font != font) {
 969                                 font = next_font;
 970                         }
 971                 }
 972
 973                 // We end font definition before blanks
 974                 if (open_font &&
 975                     (font != running_font ||
 976                      font.language() != running_font.language()))
 977                 {
 978                         column += running_font.latexWriteEndChanges(os,
 979                                                                     basefont,
 980                                                                     (i == body_pos-1) ? basefont : font);
 981                         running_font = basefont;
 982                         open_font = false;
 983                 }
 984
 985                 // Blanks are printed before start of fontswitch
 986                 if (c == ' ') {
 987                         // Do not print the separation of the optional argument
 988                         if (i != body_pos - 1) {
 989                                 pimpl_->simpleTeXBlanks(os, texrow, i,
 990                                                        column, font, *style);
 991                         }
 992                 }
 993
 994                 // Do we need to change font?
 995                 if ((font != running_font ||
 996                      font.language() != running_font.language()) &&
 997                         i != body_pos - 1)
 998                 {
 999                         column += font.latexWriteStartChanges(os, basefont,
1000                                                               last_font);
1001                         running_font = font;
1002                         open_font = true;
1003                 }
1004
1005                 Change::Type change = pimpl_->lookupChange(i).type;
1006
1007                 column += Changes::latexMarkChange(os, running_change,
1008                         change, output);
1009                 running_change = change;
1010
1011                 // do not output text which is marked deleted
1012                 // if change tracking output is not desired
1013                 if (output || running_change != Change::DELETED) {
1014                         OutputParams rp = runparams;
1015                         rp.free_spacing = style->free_spacing;
1016                         rp.local_font = &font;
1017                         rp.intitle = style->intitle;
1018                         pimpl_->simpleTeXSpecialChars(buf, bparams,
1019                                                 os, texrow, rp,
1020                                                 font, running_font,
1021                                                 basefont, outerfont, open_font,
1022                                                 running_change,
1023                                                 *style, i, column, c);
1024                 }
1025         }
1026
1027         column += Changes::latexMarkChange(os,
1028                         running_change, Change::UNCHANGED, output);
1029
1030         // If we have an open font definition, we have to close it
1031         if (open_font) {
1032 #ifdef FIXED_LANGUAGE_END_DETECTION
1033                 if (next_) {
1034                         running_font
1035                                 .latexWriteEndChanges(os, basefont,
1036                                                       next_->getFont(bparams,
1037                                                       0, outerfont));
1038                 } else {
1039                         running_font.latexWriteEndChanges(os, basefont,
1040                                                           basefont);
1041                 }
1042 #else
1043 #ifdef WITH_WARNINGS
1044 //#warning For now we ALWAYS have to close the foreign font settings if they are
1045 //#warning there as we start another \selectlanguage with the next paragraph if
1046 //#warning we are in need of this. This should be fixed sometime (Jug)
1047 #endif
1048                 running_font.latexWriteEndChanges(os, basefont,  basefont);
1049 #endif
1050         }
1051
1052         // Needed if there is an optional argument but no contents.
1053         if (body_pos > 0 && body_pos == size()) {
1054                 os << "}]~";
1055                 return_value = false;
1056         }
1057
1058         if (!asdefault) {
1059                 column += endTeXParParams(bparams, os, runparams.moving_arg);
1060         }
1061
1062         lyxerr[Debug::LATEX] << "SimpleTeXOnePar...done " << this << endl;
1063         return return_value;
1064 }
1065
1066
1067 namespace {
1068
1069 // checks, if newcol chars should be put into this line
1070 // writes newline, if necessary.
1071 void sgmlLineBreak(ostream & os, string::size_type & colcount,
1072                           string::size_type newcol)
1073 {
1074         colcount += newcol;
1075         if (colcount > lyxrc.ascii_linelen) {
1076                 os << "\n";
1077                 colcount = newcol; // assume write after this call
1078         }
1079 }
1080
1081 enum PAR_TAG {
1082         PAR_NONE=0,
1083         TT = 1,
1084         SF = 2,
1085         BF = 4,
1086         IT = 8,
1087         SL = 16,
1088         EM = 32
1089 };
1090
1091
1092 string tag_name(PAR_TAG const & pt) {
1093         switch (pt) {
1094         case PAR_NONE: return "!-- --";
1095         case TT: return "tt";
1096         case SF: return "sf";
1097         case BF: return "bf";
1098         case IT: return "it";
1099         case SL: return "sl";
1100         case EM: return "em";
1101         }
1102         return "";
1103 }
1104
1105
1106 inline
1107 void operator|=(PAR_TAG & p1, PAR_TAG const & p2)
1108 {
1109         p1 = static_cast<PAR_TAG>(p1 | p2);
1110 }
1111
1112
1113 inline
1114 void reset(PAR_TAG & p1, PAR_TAG const & p2)
1115 {
1116         p1 = static_cast<PAR_TAG>(p1 & ~p2);
1117 }
1118
1119 } // anon
1120
1121
1122 bool Paragraph::emptyTag() const
1123 {
1124         for (pos_type i = 0; i < size(); ++i) {
1125                 if (isInset(i)) {
1126                         InsetBase const * inset = getInset(i);
1127                         InsetBase::Code lyx_code = inset->lyxCode();
1128                         if (lyx_code != InsetBase::TOC_CODE &&
1129                             lyx_code != InsetBase::INCLUDE_CODE &&
1130                             lyx_code != InsetBase::GRAPHICS_CODE &&
1131                             lyx_code != InsetBase::ERT_CODE &&
1132                             lyx_code != InsetBase::FLOAT_CODE &&
1133                             lyx_code != InsetBase::TABULAR_CODE) {
1134                                 return false;
1135                         }
1136                 } else {
1137                         value_type c = getChar(i);
1138                         if (c != ' ' && c != '\t')
1139                                 return false;
1140                 }
1141         }
1142         return true;
1143 }
1144
1145
1146 string Paragraph::getID(Buffer const & buf, OutputParams const & runparams) const
1147 {
1148         for (pos_type i = 0; i < size(); ++i) {
1149                 if (isInset(i)) {
1150                         InsetBase const * inset = getInset(i);
1151                         InsetBase::Code lyx_code = inset->lyxCode();
1152                         if (lyx_code == InsetBase::LABEL_CODE) {
1153                                 string const id = static_cast<InsetCommand const *>(inset)->getContents();
1154                                 return "id=\"" + sgml::cleanID(buf, runparams, id) + "\"";
1155                         }
1156                 }
1157
1158         }
1159         return string();
1160 }
1161
1162
1163 pos_type Paragraph::getFirstWord(Buffer const & buf, ostream & os, OutputParams const & runparams) const
1164 {
1165         pos_type i;
1166         for (i = 0; i < size(); ++i) {
1167                 if (isInset(i)) {
1168                         InsetBase const * inset = getInset(i);
1169                         inset->docbook(buf, os, runparams);
1170                 } else {
1171                         value_type c = getChar(i);
1172                         if (c == ' ')
1173                                 break;
1174                         bool ws;
1175                         string str;
1176                         // FIXME UNICODE
1177                         // sgml::escapeChar takes a char, not lyx::char_type
1178                         boost::tie(ws, str) = sgml::escapeChar(c);
1179
1180                         os << str;
1181                 }
1182         }
1183         return i;
1184 }
1185
1186
1187 bool Paragraph::onlyText(Buffer const & buf, LyXFont const & outerfont, pos_type initial) const
1188 {
1189         LyXFont font_old;
1190
1191         for (pos_type i = initial; i < size(); ++i) {
1192                 LyXFont font = getFont(buf.params(), i, outerfont);
1193                 if (isInset(i))
1194                         return false;
1195                 if (i != initial && font != font_old)
1196                         return false;
1197                 font_old = font;
1198         }
1199
1200         return true;
1201 }
1202
1203
1204 void Paragraph::simpleDocBookOnePar(Buffer const & buf,
1205                                     ostream & os,
1206                                     OutputParams const & runparams,
1207                                     LyXFont const & outerfont,
1208                                     pos_type initial) const
1209 {
1210         bool emph_flag = false;
1211
1212         LyXLayout_ptr const & style = layout();
1213         LyXFont font_old =
1214                 style->labeltype == LABEL_MANUAL ? style->labelfont : style->font;
1215
1216         if (style->pass_thru && !onlyText(buf, outerfont, initial))
1217                 os << "]]>";
1218
1219         // parsing main loop
1220         for (pos_type i = initial; i < size(); ++i) {
1221                 LyXFont font = getFont(buf.params(), i, outerfont);
1222
1223                 // handle <emphasis> tag
1224                 if (font_old.emph() != font.emph()) {
1225                         if (font.emph() == LyXFont::ON) {
1226                                 os << "<emphasis>";
1227                                 emph_flag = true;
1228                         } else if (i != initial) {
1229                                 os << "</emphasis>";
1230                                 emph_flag = false;
1231                         }
1232                 }
1233
1234                 if (isInset(i)) {
1235                         InsetBase const * inset = getInset(i);
1236                         inset->docbook(buf, os, runparams);
1237                 } else {
1238                         value_type c = getChar(i);
1239                         bool ws;
1240                         string str;
1241                         // FIXME UNICODE
1242                         // sgml::escapeChar takes a char, not lyx::char_type
1243                         boost::tie(ws, str) = sgml::escapeChar(c);
1244
1245                         if (style->pass_thru)
1246                                 os << c;
1247                         else
1248                                 os << str;
1249                 }
1250                 font_old = font;
1251         }
1252
1253         if (emph_flag) {
1254                 os << "</emphasis>";
1255         }
1256
1257         if (style->free_spacing)
1258                 os << '\n';
1259         if (style->pass_thru && !onlyText(buf, outerfont, initial))
1260                 os << "<![CDATA[";
1261 }
1262
1263
1264 bool Paragraph::isNewline(pos_type pos) const
1265 {
1266         return isInset(pos)
1267                 && getInset(pos)->lyxCode() == InsetBase::NEWLINE_CODE;
1268 }
1269
1270
1271 bool Paragraph::isLineSeparator(pos_type pos) const
1272 {
1273         value_type const c = getChar(pos);
1274         return isLineSeparatorChar(c)
1275                 || (c == Paragraph::META_INSET && getInset(pos) &&
1276                 getInset(pos)->isLineSeparator());
1277 }
1278
1279
1280 /// Used by the spellchecker
1281 bool Paragraph::isLetter(pos_type pos) const
1282 {
1283         if (isInset(pos))
1284                 return getInset(pos)->isLetter();
1285         else {
1286                 value_type const c = getChar(pos);
1287                 return isLetterChar(c) || isDigit(c);
1288         }
1289 }
1290
1291
1292 Language const *
1293 Paragraph::getParLanguage(BufferParams const & bparams) const
1294 {
1295         if (!empty())
1296                 return getFirstFontSettings(bparams).language();
1297 #ifdef WITH_WARNINGS
1298 #warning FIXME we should check the prev par as well (Lgb)
1299 #endif
1300         return bparams.language;
1301 }
1302
1303
1304 bool Paragraph::isRightToLeftPar(BufferParams const & bparams) const
1305 {
1306         return lyxrc.rtl_support
1307                 && getParLanguage(bparams)->rightToLeft()
1308                 && ownerCode() != InsetBase::ERT_CODE;
1309 }
1310
1311
1312 void Paragraph::changeLanguage(BufferParams const & bparams,
1313                                Language const * from, Language const * to)
1314 {
1315         for (pos_type i = 0; i < size(); ++i) {
1316                 LyXFont font = getFontSettings(bparams, i);
1317                 if (font.language() == from) {
1318                         font.setLanguage(to);
1319                         setFont(i, font);
1320                 }
1321         }
1322 }
1323
1324
1325 bool Paragraph::isMultiLingual(BufferParams const & bparams) const
1326 {
1327         Language const * doc_language = bparams.language;
1328         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
1329         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
1330
1331         for (; cit != end; ++cit)
1332                 if (cit->font().language() != ignore_language &&
1333                     cit->font().language() != latex_language &&
1334                     cit->font().language() != doc_language)
1335                         return true;
1336         return false;
1337 }
1338
1339
1340 // Convert the paragraph to a string.
1341 // Used for building the table of contents
1342 docstring const Paragraph::asString(Buffer const & buffer, bool label) const
1343 {
1344         OutputParams runparams;
1345         return asString(buffer, runparams, label);
1346 }
1347
1348
1349 docstring const Paragraph::asString(Buffer const & buffer,
1350                                  OutputParams const & runparams,
1351                                  bool label) const
1352 {
1353 #if 0
1354         string s;
1355         if (label && !params().labelString().empty())
1356                 s += params().labelString() + ' ';
1357
1358         for (pos_type i = 0; i < size(); ++i) {
1359                 value_type c = getChar(i);
1360                 if (isPrintable(c))
1361                         s += c;
1362                 else if (c == META_INSET &&
1363                          getInset(i)->lyxCode() == InsetBase::MATH_CODE) {
1364                         ostringstream os;
1365                         getInset(i)->plaintext(buffer, os, runparams);
1366                         s += subst(STRCONV(os.str()),'\n',' ');
1367                 }
1368         }
1369
1370         return s;
1371 #else
1372         // This should really be done by the caller and not here.
1373         docstring ret = asString(buffer, runparams, 0, size(), label);
1374         return subst(ret, '\n', ' ');
1375 #endif
1376 }
1377
1378
1379 docstring const Paragraph::asString(Buffer const & buffer,
1380                                  pos_type beg, pos_type end, bool label) const
1381 {
1382
1383         OutputParams const runparams;
1384         return asString(buffer, runparams, beg, end, label);
1385 }
1386
1387
1388 docstring const Paragraph::asString(Buffer const & buffer,
1389                                  OutputParams const & runparams,
1390                                  pos_type beg, pos_type end, bool label) const
1391 {
1392         lyx::odocstringstream os;
1393
1394         if (beg == 0 && label && !params().labelString().empty())
1395                 // FIXME UNICODE
1396                 os << lyx::from_utf8(params().labelString()) << ' ';
1397
1398         for (pos_type i = beg; i < end; ++i) {
1399                 value_type const c = getUChar(buffer.params(), i);
1400                 // FIXME: isPrintable does not work for lyx::char_type
1401                 if (isPrintable(c))
1402                         os.put(c);
1403                 else if (c == META_INSET)
1404                         getInset(i)->textString(buffer, os, runparams);
1405         }
1406
1407         return os.str();
1408 }
1409
1410
1411 void Paragraph::setInsetOwner(InsetBase * inset)
1412 {
1413         pimpl_->inset_owner = inset;
1414 }
1415
1416
1417 void Paragraph::setContentsFromPar(Paragraph const & par)
1418 {
1419         pimpl_->setContentsFromPar(par);
1420 }
1421
1422
1423 Change const Paragraph::lookupChange(lyx::pos_type pos) const
1424 {
1425         BOOST_ASSERT(pos <= size());
1426         return pimpl_->lookupChange(pos);
1427 }
1428
1429
1430 bool Paragraph::isChanged(pos_type start, pos_type end) const
1431 {
1432         return pimpl_->isChanged(start, end);
1433 }
1434
1435
1436 void Paragraph::setChange(Change const & change)
1437 {
1438         pimpl_->setChange(change);
1439 }
1440
1441
1442 void Paragraph::setChange(lyx::pos_type pos, Change const & change)
1443 {
1444         pimpl_->setChange(pos, change);
1445 }
1446
1447
1448 void Paragraph::acceptChange(pos_type start, pos_type end)
1449 {
1450         return pimpl_->acceptChange(start, end);
1451 }
1452
1453
1454 void Paragraph::rejectChange(pos_type start, pos_type end)
1455 {
1456         return pimpl_->rejectChange(start, end);
1457 }
1458
1459
1460 int Paragraph::id() const
1461 {
1462         return pimpl_->id_;
1463 }
1464
1465
1466 LyXLayout_ptr const & Paragraph::layout() const
1467 {
1468         return layout_;
1469 }
1470
1471
1472 void Paragraph::layout(LyXLayout_ptr const & new_layout)
1473 {
1474         layout_ = new_layout;
1475 }
1476
1477
1478 InsetBase * Paragraph::inInset() const
1479 {
1480         return pimpl_->inset_owner;
1481 }
1482
1483
1484 InsetBase::Code Paragraph::ownerCode() const
1485 {
1486         return pimpl_->inset_owner
1487                 ? pimpl_->inset_owner->lyxCode() : InsetBase::NO_CODE;
1488 }
1489
1490
1491 void Paragraph::clearContents()
1492 {
1493         text_.clear();
1494 }
1495
1496
1497 void Paragraph::setChar(pos_type pos, value_type c)
1498 {
1499         text_[pos] = c;
1500 }
1501
1502
1503 ParagraphParameters & Paragraph::params()
1504 {
1505         return pimpl_->params;
1506 }
1507
1508
1509 ParagraphParameters const & Paragraph::params() const
1510 {
1511         return pimpl_->params;
1512 }
1513
1514
1515 bool Paragraph::isFreeSpacing() const
1516 {
1517         if (layout()->free_spacing)
1518                 return true;
1519
1520         // for now we just need this, later should we need this in some
1521         // other way we can always add a function to InsetBase too.
1522         return ownerCode() == InsetBase::ERT_CODE;
1523 }
1524
1525
1526 bool Paragraph::allowEmpty() const
1527 {
1528         if (layout()->keepempty)
1529                 return true;
1530         return ownerCode() == InsetBase::ERT_CODE;
1531 }
1532
1533
1534 Row & Paragraph::getRow(pos_type pos, bool boundary)
1535 {
1536         BOOST_ASSERT(!rows().empty());
1537
1538         // If boundary is set we should return the row on which
1539         // the character before is inside.
1540         if (pos > 0 && boundary)
1541                 --pos;
1542
1543         RowList::iterator rit = rows_.end();
1544         RowList::iterator const begin = rows_.begin();
1545
1546         for (--rit; rit != begin && rit->pos() > pos; --rit)
1547                 ;
1548
1549         return *rit;
1550 }
1551
1552
1553 Row const & Paragraph::getRow(pos_type pos, bool boundary) const
1554 {
1555         BOOST_ASSERT(!rows().empty());
1556
1557         // If boundary is set we should return the row on which
1558         // the character before is inside.
1559         if (pos > 0 && boundary)
1560                 --pos;
1561
1562         RowList::const_iterator rit = rows_.end();
1563         RowList::const_iterator const begin = rows_.begin();
1564
1565         for (--rit; rit != begin && rit->pos() > pos; --rit)
1566                 ;
1567
1568         return *rit;
1569 }
1570
1571
1572 size_t Paragraph::pos2row(pos_type pos) const
1573 {
1574         BOOST_ASSERT(!rows().empty());
1575
1576         RowList::const_iterator rit = rows_.end();
1577         RowList::const_iterator const begin = rows_.begin();
1578
1579         for (--rit; rit != begin && rit->pos() > pos; --rit)
1580                 ;
1581
1582         return rit - begin;
1583 }
1584
1585
1586 char_type Paragraph::transformChar(char_type c, pos_type pos) const
1587 {
1588         if (!Encodings::is_arabic(c))
1589                 if (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 && isDigit(c))
1590                         return c + (0xb0 - '0');
1591                 else
1592                         return c;
1593
1594         value_type const prev_char = pos > 0 ? getChar(pos - 1) : ' ';
1595         value_type next_char = ' ';
1596
1597         for (pos_type i = pos + 1, end = size(); i < end; ++i) {
1598                 value_type const par_char = getChar(i);
1599                 if (!Encodings::isComposeChar_arabic(par_char)) {
1600                         next_char = par_char;
1601                         break;
1602                 }
1603         }
1604
1605         if (Encodings::is_arabic(next_char)) {
1606                 if (Encodings::is_arabic(prev_char) &&
1607                         !Encodings::is_arabic_special(prev_char))
1608                         return Encodings::transformChar(c, Encodings::FORM_MEDIAL);
1609                 else
1610                         return Encodings::transformChar(c, Encodings::FORM_INITIAL);
1611         } else {
1612                 if (Encodings::is_arabic(prev_char) &&
1613                         !Encodings::is_arabic_special(prev_char))
1614                         return Encodings::transformChar(c, Encodings::FORM_FINAL);
1615                 else
1616                         return Encodings::transformChar(c, Encodings::FORM_ISOLATED);
1617         }
1618 }
1619
1620
1621 void Paragraph::dump() const
1622 {
1623         lyxerr << "Paragraph::dump: rows.size(): " << rows_.size() << endl;
1624         for (size_t i = 0; i != rows_.size(); ++i) {
1625                 lyxerr << "  row " << i << ":   ";
1626                 rows_[i].dump();
1627         }
1628 }