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
  48 #include <boost/tuple/tuple.hpp>
  49 #include <boost/bind.hpp>
  50
  51 #include <list>
  52 #include <stack>
  53 #include <sstream>
  54
  55 using lyx::pos_type;
  56
  57 using lyx::support::subst;
  58
  59 using std::distance;
  60 using std::endl;
  61 using std::list;
  62 using std::stack;
  63 using std::string;
  64 using std::ostream;
  65 using std::ostringstream;
  66
  67
  68 ParagraphList::ParagraphList()
  69 {}
  70
  71
  72 Paragraph::Paragraph()
  73         : begin_of_body_(0), pimpl_(new Paragraph::Pimpl(this))
  74 {
  75         itemdepth = 0;
  76         params().clear();
  77 }
  78
  79
  80 Paragraph::Paragraph(Paragraph const & par)
  81         :       itemdepth(par.itemdepth), insetlist(par.insetlist),
  82                 dim_(par.dim_),
  83                 rows_(par.rows_), layout_(par.layout_),
  84                 text_(par.text_), begin_of_body_(par.begin_of_body_),
  85           pimpl_(new Paragraph::Pimpl(*par.pimpl_, this))
  86 {
  87         //lyxerr << "Paragraph::Paragraph(Paragraph const&)" << endl;
  88         InsetList::iterator it = insetlist.begin();
  89         InsetList::iterator end = insetlist.end();
  90         for (; it != end; ++it)
  91                 it->inset = it->inset->clone().release();
  92 }
  93
  94
  95 Paragraph & Paragraph::operator=(Paragraph const & par)
  96 {
  97         // needed as we will destroy the pimpl_ before copying it
  98         if (&par != this) {
  99                 itemdepth = par.itemdepth;
 100
 101                 insetlist = par.insetlist;
 102                 InsetList::iterator it = insetlist.begin();
 103                 InsetList::iterator end = insetlist.end();
 104                 for (; it != end; ++it)
 105                         it->inset = it->inset->clone().release();
 106
 107                 rows_ = par.rows_;
 108                 dim_ = par.dim_;
 109                 layout_ = par.layout();
 110                 text_ = par.text_;
 111                 begin_of_body_ = par.begin_of_body_;
 112
 113                 delete pimpl_;
 114                 pimpl_ = new Pimpl(*par.pimpl_, this);
 115         }
 116         return *this;
 117 }
 118
 119
 120 Paragraph::~Paragraph()
 121 {
 122         delete pimpl_;
 123         //
 124         //lyxerr << "Paragraph::paragraph_id = "
 125         //       << Paragraph::paragraph_id << endl;
 126 }
 127
 128
 129 void Paragraph::write(Buffer const & buf, ostream & os,
 130                           BufferParams const & bparams,
 131                           depth_type & dth) const
 132 {
 133         // The beginning or end of a deeper (i.e. nested) area?
 134         if (dth != params().depth()) {
 135                 if (params().depth() > dth) {
 136                         while (params().depth() > dth) {
 137                                 os << "\n\\begin_deeper";
 138                                 ++dth;
 139                         }
 140                 } else {
 141                         while (params().depth() < dth) {
 142                                 os << "\n\\end_deeper";
 143                                 --dth;
 144                         }
 145                 }
 146         }
 147
 148         // First write the layout
 149         os << "\n\\begin_layout " << layout()->name() << '\n';
 150
 151         params().write(os);
 152
 153         LyXFont font1(LyXFont::ALL_INHERIT, bparams.language);
 154
 155         Change running_change = Change(Change::UNCHANGED);
 156         lyx::time_type const curtime(lyx::current_time());
 157
 158         int column = 0;
 159         for (pos_type i = 0; i < size(); ++i) {
 160
 161                 Change change = pimpl_->lookupChangeFull(i);
 162                 Changes::lyxMarkChange(os, column, curtime, running_change, change);
 163                 running_change = change;
 164
 165                 // Write font changes
 166                 LyXFont font2 = getFontSettings(bparams, i);
 167                 if (font2 != font1) {
 168                         font2.lyxWriteChanges(font1, os);
 169                         column = 0;
 170                         font1 = font2;
 171                 }
 172
 173                 value_type const c = getChar(i);
 174                 switch (c) {
 175                 case META_INSET:
 176                 {
 177                         InsetBase const * inset = getInset(i);
 178                         if (inset)
 179                                 if (inset->directWrite()) {
 180                                         // international char, let it write
 181                                         // code directly so it's shorter in
 182                                         // the file
 183                                         inset->write(buf, os);
 184                                 } else {
 185                                         if (i)
 186                                                 os << '\n';
 187                                         os << "\\begin_inset ";
 188                                         inset->write(buf, os);
 189                                         os << "\n\\end_inset\n\n";
 190                                         column = 0;
 191                                 }
 192                 }
 193                 break;
 194                 case '\\':
 195                         os << "\n\\backslash\n";
 196                         column = 0;
 197                         break;
 198                 case '.':
 199                         if (i + 1 < size() && getChar(i + 1) == ' ') {
 200                                 os << ".\n";
 201                                 column = 0;
 202                         } else
 203                                 os << '.';
 204                         break;
 205                 default:
 206                         if ((column > 70 && c == ' ')
 207                             || column > 79) {
 208                                 os << '\n';
 209                                 column = 0;
 210                         }
 211                         // this check is to amend a bug. LyX sometimes
 212                         // inserts '\0' this could cause problems.
 213                         if (c != '\0')
 214                                 os << c;
 215                         else
 216                                 lyxerr << "ERROR (Paragraph::writeFile):"
 217                                         " NULL char in structure." << endl;
 218                         ++column;
 219                         break;
 220                 }
 221         }
 222
 223         // to make reading work properly
 224         if (!size()) {
 225                 running_change = pimpl_->lookupChange(0);
 226                 Changes::lyxMarkChange(os, column, curtime,
 227                         Change(Change::UNCHANGED), running_change);
 228         }
 229         Changes::lyxMarkChange(os, column, curtime,
 230                 running_change, Change(Change::UNCHANGED));
 231
 232         os << "\n\\end_layout\n";
 233 }
 234
 235
 236 void Paragraph::validate(LaTeXFeatures & features) const
 237 {
 238         pimpl_->validate(features, *layout());
 239 }
 240
 241
 242 void Paragraph::eraseIntern(lyx::pos_type pos)
 243 {
 244         pimpl_->eraseIntern(pos);
 245 }
 246
 247
 248 bool Paragraph::erase(pos_type pos)
 249 {
 250         return pimpl_->erase(pos);
 251 }
 252
 253
 254 int Paragraph::erase(pos_type start, pos_type end)
 255 {
 256         return pimpl_->erase(start, end);
 257 }
 258
 259
 260 void Paragraph::insert(pos_type start, string const & str,
 261                        LyXFont const & font)
 262 {
 263         int size = str.size();
 264         for (int i = 0 ; i < size ; ++i)
 265                 insertChar(start + i, str[i], font);
 266 }
 267
 268
 269 bool Paragraph::checkInsertChar(LyXFont &)
 270 {
 271         return true;
 272 }
 273
 274
 275 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
 276                            Change change)
 277 {
 278         pimpl_->insertChar(pos, c, change);
 279 }
 280
 281
 282 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
 283                            LyXFont const & font, Change change)
 284 {
 285         pimpl_->insertChar(pos, c, change);
 286         setFont(pos, font);
 287 }
 288
 289
 290 void Paragraph::insertInset(pos_type pos, InsetBase * inset, Change change)
 291 {
 292         pimpl_->insertInset(pos, inset, change);
 293 }
 294
 295
 296 void Paragraph::insertInset(pos_type pos, InsetBase * inset,
 297                             LyXFont const & font, Change change)
 298 {
 299         pimpl_->insertInset(pos, inset, change);
 300         setFont(pos, font);
 301 }
 302
 303
 304 bool Paragraph::insetAllowed(InsetBase_code code)
 305 {
 306         return !pimpl_->inset_owner || pimpl_->inset_owner->insetAllowed(code);
 307 }
 308
 309
 310 InsetBase * Paragraph::getInset(pos_type pos)
 311 {
 312         BOOST_ASSERT(pos < size());
 313         return insetlist.get(pos);
 314 }
 315
 316
 317 InsetBase const * Paragraph::getInset(pos_type pos) const
 318 {
 319         BOOST_ASSERT(pos < size());
 320         return insetlist.get(pos);
 321 }
 322
 323
 324 // Gets uninstantiated font setting at position.
 325 LyXFont const Paragraph::getFontSettings(BufferParams const & bparams,
 326                                          pos_type pos) const
 327 {
 328         if (pos > size()) {
 329                 lyxerr << " pos: " << pos << " size: " << size() << endl;
 330                 BOOST_ASSERT(pos <= size());
 331         }
 332
 333         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 334         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
 335         for (; cit != end; ++cit)
 336                 if (cit->pos() >= pos)
 337                         break;
 338
 339         if (cit != end)
 340                 return cit->font();
 341
 342         if (pos == size() && !empty())
 343                 return getFontSettings(bparams, pos - 1);
 344
 345         return LyXFont(LyXFont::ALL_INHERIT, getParLanguage(bparams));
 346 }
 347
 348
 349 lyx::pos_type Paragraph::getEndPosOfFontSpan(lyx::pos_type pos) const
 350 {
 351         BOOST_ASSERT(pos <= size());
 352
 353         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 354         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
 355         for (; cit != end; ++cit)
 356                 if (cit->pos() >= pos)
 357                         return cit->pos();
 358
 359         // This should not happen, but if so, we take no chances.
 360         //lyxerr << "Paragraph::getEndPosOfFontSpan: This should not happen!"
 361         //      << endl;
 362         return pos;
 363 }
 364
 365
 366 // Gets uninstantiated font setting at position 0
 367 LyXFont const Paragraph::getFirstFontSettings() const
 368 {
 369         if (!empty() && !pimpl_->fontlist.empty())
 370                 return pimpl_->fontlist[0].font();
 371
 372         return LyXFont(LyXFont::ALL_INHERIT);
 373 }
 374
 375
 376 // Gets the fully instantiated font at a given position in a paragraph
 377 // This is basically the same function as LyXText::GetFont() in text2.C.
 378 // The difference is that this one is used for generating the LaTeX file,
 379 // and thus cosmetic "improvements" are disallowed: This has to deliver
 380 // the true picture of the buffer. (Asger)
 381 LyXFont const Paragraph::getFont(BufferParams const & bparams, pos_type pos,
 382                                  LyXFont const & outerfont) const
 383 {
 384         BOOST_ASSERT(pos >= 0);
 385
 386         LyXLayout_ptr const & lout = layout();
 387
 388         pos_type const body_pos = beginOfBody();
 389
 390         LyXFont layoutfont;
 391         if (pos < body_pos)
 392                 layoutfont = lout->labelfont;
 393         else
 394                 layoutfont = lout->font;
 395
 396         LyXFont font = getFontSettings(bparams, pos);
 397         font.realize(layoutfont);
 398         font.realize(outerfont);
 399         font.realize(bparams.getLyXTextClass().defaultfont());
 400
 401         return font;
 402 }
 403
 404
 405 LyXFont const Paragraph::getLabelFont
 406         (BufferParams const & bparams, LyXFont const & outerfont) const
 407 {
 408         LyXFont tmpfont = layout()->labelfont;
 409         tmpfont.setLanguage(getParLanguage(bparams));
 410         tmpfont.realize(outerfont);
 411         tmpfont.realize(bparams.getLyXTextClass().defaultfont());
 412         return tmpfont;
 413 }
 414
 415
 416 LyXFont const Paragraph::getLayoutFont
 417         (BufferParams const & bparams, LyXFont const & outerfont) const
 418 {
 419         LyXFont tmpfont = layout()->font;
 420         tmpfont.setLanguage(getParLanguage(bparams));
 421         tmpfont.realize(outerfont);
 422         tmpfont.realize(bparams.getLyXTextClass().defaultfont());
 423         return tmpfont;
 424 }
 425
 426
 427 /// Returns the height of the highest font in range
 428 LyXFont_size Paragraph::highestFontInRange
 429         (pos_type startpos, pos_type endpos, LyXFont_size def_size) const
 430 {
 431         if (pimpl_->fontlist.empty())
 432                 return def_size;
 433
 434         Pimpl::FontList::const_iterator end_it = pimpl_->fontlist.begin();
 435         Pimpl::FontList::const_iterator const end = pimpl_->fontlist.end();
 436         for (; end_it != end; ++end_it) {
 437                 if (end_it->pos() >= endpos)
 438                         break;
 439         }
 440
 441         if (end_it != end)
 442                 ++end_it;
 443
 444         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 445         for (; cit != end; ++cit) {
 446                 if (cit->pos() >= startpos)
 447                         break;
 448         }
 449
 450         LyXFont::FONT_SIZE maxsize = LyXFont::SIZE_TINY;
 451         for (; cit != end_it; ++cit) {
 452                 LyXFont::FONT_SIZE size = cit->font().size();
 453                 if (size == LyXFont::INHERIT_SIZE)
 454                         size = def_size;
 455                 if (size > maxsize && size <= LyXFont::SIZE_HUGER)
 456                         maxsize = size;
 457         }
 458         return maxsize;
 459 }
 460
 461
 462 Paragraph::value_type
 463 Paragraph::getUChar(BufferParams const & bparams, pos_type pos) const
 464 {
 465         value_type c = getChar(pos);
 466         if (!lyxrc.rtl_support)
 467                 return c;
 468
 469         value_type uc = c;
 470         switch (c) {
 471         case '(':
 472                 uc = ')';
 473                 break;
 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         }
 496         if (uc != c && getFontSettings(bparams, pos).isRightToLeft())
 497                 return uc;
 498         else
 499                 return c;
 500 }
 501
 502
 503 void Paragraph::setFont(pos_type pos, LyXFont const & font)
 504 {
 505         BOOST_ASSERT(pos <= size());
 506
 507         // First, reduce font against layout/label font
 508         // Update: The setCharFont() routine in text2.C already
 509         // reduces font, so we don't need to do that here. (Asger)
 510         // No need to simplify this because it will disappear
 511         // in a new kernel. (Asger)
 512         // Next search font table
 513
 514         Pimpl::FontList::iterator beg = pimpl_->fontlist.begin();
 515         Pimpl::FontList::iterator it = beg;
 516         Pimpl::FontList::iterator endit = pimpl_->fontlist.end();
 517         for (; it != endit; ++it) {
 518                 if (it->pos() >= pos)
 519                         break;
 520         }
 521         unsigned int i = distance(beg, it);
 522         bool notfound = (it == endit);
 523
 524         if (!notfound && pimpl_->fontlist[i].font() == font)
 525                 return;
 526
 527         bool begin = pos == 0 || notfound ||
 528                 (i > 0 && pimpl_->fontlist[i - 1].pos() == pos - 1);
 529         // Is position pos is a beginning of a font block?
 530         bool end = !notfound && pimpl_->fontlist[i].pos() == pos;
 531         // Is position pos is the end of a font block?
 532         if (begin && end) { // A single char block
 533                 if (i + 1 < pimpl_->fontlist.size() &&
 534                     pimpl_->fontlist[i + 1].font() == font) {
 535                         // Merge the singleton block with the next block
 536                         pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i);
 537                         if (i > 0 && pimpl_->fontlist[i - 1].font() == font)
 538                                 pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i - 1);
 539                 } else if (i > 0 && pimpl_->fontlist[i - 1].font() == font) {
 540                         // Merge the singleton block with the previous block
 541                         pimpl_->fontlist[i - 1].pos(pos);
 542                         pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i);
 543                 } else
 544                         pimpl_->fontlist[i].font(font);
 545         } else if (begin) {
 546                 if (i > 0 && pimpl_->fontlist[i - 1].font() == font)
 547                         pimpl_->fontlist[i - 1].pos(pos);
 548                 else
 549                         pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i,
 550                                         Pimpl::FontTable(pos, font));
 551         } else if (end) {
 552                 pimpl_->fontlist[i].pos(pos - 1);
 553                 if (!(i + 1 < pimpl_->fontlist.size() &&
 554                       pimpl_->fontlist[i + 1].font() == font))
 555                         pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i + 1,
 556                                         Pimpl::FontTable(pos, font));
 557         } else { // The general case. The block is splitted into 3 blocks
 558                 pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i,
 559                                 Pimpl::FontTable(pos - 1, pimpl_->fontlist[i].font()));
 560                 pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i + 1,
 561                                 Pimpl::FontTable(pos, font));
 562         }
 563 }
 564
 565
 566 void Paragraph::makeSameLayout(Paragraph const & par)
 567 {
 568         layout(par.layout());
 569         // move to pimpl?
 570         params() = par.params();
 571 }
 572
 573
 574 int Paragraph::stripLeadingSpaces()
 575 {
 576         if (isFreeSpacing())
 577                 return 0;
 578
 579         int i = 0;
 580         while (!empty() && (isNewline(0) || isLineSeparator(0))) {
 581                 // Set Change::Type to Change::INSERTED to quietly remove it
 582                 setChange(0, Change::INSERTED);
 583                 erase(0);
 584                 ++i;
 585         }
 586
 587         return i;
 588 }
 589
 590
 591 bool Paragraph::hasSameLayout(Paragraph const & par) const
 592 {
 593         return par.layout() == layout() && params().sameLayout(par.params());
 594 }
 595
 596
 597 Paragraph::depth_type Paragraph::getDepth() const
 598 {
 599         return params().depth();
 600 }
 601
 602
 603 Paragraph::depth_type Paragraph::getMaxDepthAfter() const
 604 {
 605         if (layout()->isEnvironment())
 606                 return params().depth() + 1;
 607         else
 608                 return params().depth();
 609 }
 610
 611
 612 char Paragraph::getAlign() const
 613 {
 614         return params().align();
 615 }
 616
 617
 618 string const & Paragraph::getLabelstring() const
 619 {
 620         return params().labelString();
 621 }
 622
 623
 624 // the next two functions are for the manual labels
 625 string const Paragraph::getLabelWidthString() const
 626 {
 627         if (!params().labelWidthString().empty())
 628                 return params().labelWidthString();
 629         else
 630                 return _("Senseless with this layout!");
 631 }
 632
 633
 634 void Paragraph::setLabelWidthString(string const & s)
 635 {
 636         params().labelWidthString(s);
 637 }
 638
 639
 640 void Paragraph::applyLayout(LyXLayout_ptr const & new_layout)
 641 {
 642         layout(new_layout);
 643         params().labelWidthString(string());
 644         params().align(LYX_ALIGN_LAYOUT);
 645         params().spacing(Spacing(Spacing::Default));
 646 }
 647
 648
 649 pos_type Paragraph::beginOfBody() const
 650 {
 651         return begin_of_body_;
 652 }
 653
 654
 655 void Paragraph::setBeginOfBody()
 656 {
 657         if (layout()->labeltype != LABEL_MANUAL) {
 658                 begin_of_body_ = 0;
 659                 return;
 660         }
 661
 662         // Unroll the first two cycles of the loop
 663         // and remember the previous character to
 664         // remove unnecessary getChar() calls
 665         pos_type i = 0;
 666         pos_type end = size();
 667         if (i < end && !isNewline(i)) {
 668                 ++i;
 669                 char previous_char = 0;
 670                 char temp = 0;
 671                 if (i < end) {
 672                         previous_char = text_[i];
 673                         if (!isNewline(i)) {
 674                                 ++i;
 675                                 while (i < end && previous_char != ' ') {
 676                                         temp = text_[i];
 677                                         if (isNewline(i))
 678                                                 break;
 679                                         ++i;
 680                                         previous_char = temp;
 681                                 }
 682                         }
 683                 }
 684         }
 685
 686         begin_of_body_ = i;
 687 }
 688
 689
 690 // returns -1 if inset not found
 691 int Paragraph::getPositionOfInset(InsetBase const * inset) const
 692 {
 693         // Find the entry.
 694         InsetList::const_iterator it = insetlist.begin();
 695         InsetList::const_iterator end = insetlist.end();
 696         for (; it != end; ++it)
 697                 if (it->inset == inset)
 698                         return it->pos;
 699         return -1;
 700 }
 701
 702
 703 InsetBibitem * Paragraph::bibitem() const
 704 {
 705         if (!insetlist.empty()) {
 706                 InsetBase * inset = insetlist.begin()->inset;
 707                 if (inset->lyxCode() == InsetBase::BIBTEX_CODE)
 708                         return static_cast<InsetBibitem *>(inset);
 709         }
 710         return 0;
 711 }
 712
 713
 714 bool Paragraph::forceDefaultParagraphs() const
 715 {
 716         return inInset() && inInset()->forceDefaultParagraphs(inInset());
 717 }
 718
 719
 720 namespace {
 721
 722 // paragraphs inside floats need different alignment tags to avoid
 723 // unwanted space
 724
 725 bool noTrivlistCentering(InsetBase::Code code)
 726 {
 727         return code == InsetBase::FLOAT_CODE || code == InsetBase::WRAP_CODE;
 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         InsetBase::Code code)
 745 {
 746         string output = suffix + "{";
 747         if (noTrivlistCentering(code))
 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                 if (getParLanguage(bparams)->babel() != "hebrew")
 793                         output = corrected_env("\\begin", "flushleft", ownerCode());
 794                 else
 795                         output = corrected_env("\\begin", "flushright", ownerCode());
 796                 os << output;
 797                 column += output.size();
 798                 break;
 799         } case LYX_ALIGN_RIGHT: {
 800                 string output;
 801                 if (getParLanguage(bparams)->babel() != "hebrew")
 802                         output = corrected_env("\\begin", "flushright", ownerCode());
 803                 else
 804                         output = corrected_env("\\begin", "flushleft", ownerCode());
 805                 os << output;
 806                 column += output.size();
 807                 break;
 808         } case LYX_ALIGN_CENTER: {
 809                 string output;
 810                 output = corrected_env("\\begin", "center", ownerCode());
 811                 os << output;
 812                 column += output.size();
 813                 break;
 814         }
 815         }
 816
 817         return column;
 818 }
 819
 820
 821 // This could go to ParagraphParameters if we want to
 822 int Paragraph::endTeXParParams(BufferParams const & bparams,
 823                                ostream & os, bool moving_arg) const
 824 {
 825         int column = 0;
 826
 827         switch (params().align()) {
 828         case LYX_ALIGN_NONE:
 829         case LYX_ALIGN_BLOCK:
 830         case LYX_ALIGN_LAYOUT:
 831         case LYX_ALIGN_SPECIAL:
 832                 break;
 833         case LYX_ALIGN_LEFT:
 834         case LYX_ALIGN_RIGHT:
 835         case LYX_ALIGN_CENTER:
 836                 if (moving_arg) {
 837                         os << "\\protect";
 838                         column = 8;
 839                 }
 840                 break;
 841         }
 842
 843         switch (params().align()) {
 844         case LYX_ALIGN_NONE:
 845         case LYX_ALIGN_BLOCK:
 846         case LYX_ALIGN_LAYOUT:
 847         case LYX_ALIGN_SPECIAL:
 848                 break;
 849         case LYX_ALIGN_LEFT: {
 850                 string output;
 851                 if (getParLanguage(bparams)->babel() != "hebrew")
 852                         output = corrected_env("\\par\\end", "flushleft", ownerCode());
 853                 else
 854                         output = corrected_env("\\par\\end", "flushright", ownerCode());
 855                 os << output;
 856                 column += output.size();
 857                 break;
 858         } case LYX_ALIGN_RIGHT: {
 859                 string output;
 860                 if (getParLanguage(bparams)->babel() != "hebrew")
 861                         output = corrected_env("\\par\\end", "flushright", ownerCode());
 862                 else
 863                         output = corrected_env("\\par\\end", "flushleft", ownerCode());
 864                 os << output;
 865                 column += output.size();
 866                 break;
 867         } case LYX_ALIGN_CENTER: {
 868                 string output;
 869                 output = corrected_env("\\par\\end", "center", ownerCode());
 870                 os << output;
 871                 column += output.size();
 872                 break;
 873         }
 874         }
 875
 876         return column;
 877 }
 878
 879
 880 // This one spits out the text of the paragraph
 881 bool Paragraph::simpleTeXOnePar(Buffer const & buf,
 882                                 BufferParams const & bparams,
 883                                 LyXFont const & outerfont,
 884                                 ostream & os, TexRow & texrow,
 885                                 OutputParams const & runparams) const
 886 {
 887         lyxerr[Debug::LATEX] << "SimpleTeXOnePar...     " << this << endl;
 888
 889         bool return_value = false;
 890
 891         LyXLayout_ptr style;
 892
 893         // well we have to check if we are in an inset with unlimited
 894         // length (all in one row) if that is true then we don't allow
 895         // any special options in the paragraph and also we don't allow
 896         // any environment other then "Standard" to be valid!
 897         bool asdefault = forceDefaultParagraphs();
 898
 899         if (asdefault) {
 900                 style = bparams.getLyXTextClass().defaultLayout();
 901         } else {
 902                 style = layout();
 903         }
 904
 905         LyXFont basefont;
 906
 907         LaTeXFeatures features(buf, bparams, runparams.nice);
 908
 909         // output change tracking marks only if desired,
 910         // if dvipost is installed,
 911         // and with dvi/ps (other formats don't work)
 912         bool const output = bparams.output_changes
 913                 && runparams.flavor == OutputParams::LATEX
 914                 && features.isAvailable("dvipost");
 915
 916         // Maybe we have to create a optional argument.
 917         pos_type body_pos = beginOfBody();
 918         unsigned int column = 0;
 919
 920         if (body_pos > 0) {
 921                 // the optional argument is kept in curly brackets in
 922                 // case it contains a ']'
 923                 os << "[{";
 924                 column += 2;
 925                 basefont = getLabelFont(bparams, outerfont);
 926         } else {
 927                 basefont = getLayoutFont(bparams, outerfont);
 928         }
 929
 930         // Which font is currently active?
 931         LyXFont running_font(basefont);
 932         // Do we have an open font change?
 933         bool open_font = false;
 934
 935         Change::Type running_change = Change::UNCHANGED;
 936
 937         texrow.start(id(), 0);
 938
 939         // if the paragraph is empty, the loop will not be entered at all
 940         if (empty()) {
 941                 if (style->isCommand()) {
 942                         os << '{';
 943                         ++column;
 944                 }
 945                 if (!asdefault)
 946                         column += startTeXParParams(bparams, os,
 947                                                     runparams.moving_arg);
 948         }
 949
 950         for (pos_type i = 0; i < size(); ++i) {
 951                 ++column;
 952                 // First char in paragraph or after label?
 953                 if (i == body_pos) {
 954                         if (body_pos > 0) {
 955                                 if (open_font) {
 956                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
 957                                         open_font = false;
 958                                 }
 959                                 basefont = getLayoutFont(bparams, outerfont);
 960                                 running_font = basefont;
 961                                 os << "}] ";
 962                                 column +=3;
 963                         }
 964                         if (style->isCommand()) {
 965                                 os << '{';
 966                                 ++column;
 967                         }
 968
 969                         if (!asdefault)
 970                                 column += startTeXParParams(bparams, os,
 971                                                             runparams.moving_arg);
 972                 }
 973
 974                 value_type c = getChar(i);
 975
 976                 // Fully instantiated font
 977                 LyXFont font = getFont(bparams, i, outerfont);
 978
 979                 LyXFont const last_font = running_font;
 980
 981                 // Spaces at end of font change are simulated to be
 982                 // outside font change, i.e. we write "\textXX{text} "
 983                 // rather than "\textXX{text }". (Asger)
 984                 if (open_font && c == ' ' && i <= size() - 2) {
 985                         LyXFont const & next_font = getFont(bparams, i + 1, outerfont);
 986                         if (next_font != running_font && next_font != font) {
 987                                 font = next_font;
 988                         }
 989                 }
 990
 991                 // We end font definition before blanks
 992                 if (open_font &&
 993                     (font != running_font ||
 994                      font.language() != running_font.language()))
 995                 {
 996                         column += running_font.latexWriteEndChanges(os,
 997                                                                     basefont,
 998                                                                     (i == body_pos-1) ? basefont : font);
 999                         running_font = basefont;
1000                         open_font = false;
1001                 }
1002
1003                 // Blanks are printed before start of fontswitch
1004                 if (c == ' ') {
1005                         // Do not print the separation of the optional argument
1006                         if (i != body_pos - 1) {
1007                                 pimpl_->simpleTeXBlanks(os, texrow, i,
1008                                                        column, font, *style);
1009                         }
1010                 }
1011
1012                 // Do we need to change font?
1013                 if ((font != running_font ||
1014                      font.language() != running_font.language()) &&
1015                         i != body_pos - 1)
1016                 {
1017                         column += font.latexWriteStartChanges(os, basefont,
1018                                                               last_font);
1019                         running_font = font;
1020                         open_font = true;
1021                 }
1022
1023                 Change::Type change = pimpl_->lookupChange(i);
1024
1025                 column += Changes::latexMarkChange(os, running_change,
1026                         change, output);
1027                 running_change = change;
1028
1029                 // do not output text which is marked deleted
1030                 // if change tracking output is not desired
1031                 if (output || running_change != Change::DELETED) {
1032                         OutputParams rp = runparams;
1033                         rp.free_spacing = style->free_spacing;
1034                         rp.local_language = font.language()->babel();
1035                         rp.intitle = style->intitle;
1036                         pimpl_->simpleTeXSpecialChars(buf, bparams,
1037                                                 os, texrow, rp,
1038                                                 font, running_font,
1039                                                 basefont, outerfont, open_font,
1040                                                 running_change,
1041                                                 *style, i, column, c);
1042                 }
1043         }
1044
1045         column += Changes::latexMarkChange(os,
1046                         running_change, Change::UNCHANGED, output);
1047
1048         // If we have an open font definition, we have to close it
1049         if (open_font) {
1050 #ifdef FIXED_LANGUAGE_END_DETECTION
1051                 if (next_) {
1052                         running_font
1053                                 .latexWriteEndChanges(os, basefont,
1054                                                       next_->getFont(bparams,
1055                                                       0, outerfont));
1056                 } else {
1057                         running_font.latexWriteEndChanges(os, basefont,
1058                                                           basefont);
1059                 }
1060 #else
1061 #ifdef WITH_WARNINGS
1062 //#warning For now we ALWAYS have to close the foreign font settings if they are
1063 //#warning there as we start another \selectlanguage with the next paragraph if
1064 //#warning we are in need of this. This should be fixed sometime (Jug)
1065 #endif
1066                 running_font.latexWriteEndChanges(os, basefont,  basefont);
1067 #endif
1068         }
1069
1070         // Needed if there is an optional argument but no contents.
1071         if (body_pos > 0 && body_pos == size()) {
1072                 os << "}]~";
1073                 return_value = false;
1074         }
1075
1076         if (!asdefault) {
1077                 column += endTeXParParams(bparams, os, runparams.moving_arg);
1078         }
1079
1080         lyxerr[Debug::LATEX] << "SimpleTeXOnePar...done " << this << endl;
1081         return return_value;
1082 }
1083
1084
1085 namespace {
1086
1087 // checks, if newcol chars should be put into this line
1088 // writes newline, if necessary.
1089 void sgmlLineBreak(ostream & os, string::size_type & colcount,
1090                           string::size_type newcol)
1091 {
1092         colcount += newcol;
1093         if (colcount > lyxrc.ascii_linelen) {
1094                 os << "\n";
1095                 colcount = newcol; // assume write after this call
1096         }
1097 }
1098
1099 enum PAR_TAG {
1100         PAR_NONE=0,
1101         TT = 1,
1102         SF = 2,
1103         BF = 4,
1104         IT = 8,
1105         SL = 16,
1106         EM = 32
1107 };
1108
1109
1110 string tag_name(PAR_TAG const & pt) {
1111         switch (pt) {
1112         case PAR_NONE: return "!-- --";
1113         case TT: return "tt";
1114         case SF: return "sf";
1115         case BF: return "bf";
1116         case IT: return "it";
1117         case SL: return "sl";
1118         case EM: return "em";
1119         }
1120         return "";
1121 }
1122
1123
1124 inline
1125 void operator|=(PAR_TAG & p1, PAR_TAG const & p2)
1126 {
1127         p1 = static_cast<PAR_TAG>(p1 | p2);
1128 }
1129
1130
1131 inline
1132 void reset(PAR_TAG & p1, PAR_TAG const & p2)
1133 {
1134         p1 = static_cast<PAR_TAG>(p1 & ~p2);
1135 }
1136
1137 } // anon
1138
1139
1140 // Handle internal paragraph parsing -- layout already processed.
1141 void Paragraph::simpleLinuxDocOnePar(Buffer const & buf,
1142                                      ostream & os,
1143                                      LyXFont const & outerfont,
1144                                      OutputParams const & runparams,
1145                                      lyx::depth_type /*depth*/) const
1146 {
1147         LyXLayout_ptr const & style = layout();
1148
1149         string::size_type char_line_count = 5;     // Heuristic choice ;-)
1150
1151         // gets paragraph main font
1152         LyXFont font_old;
1153         bool desc_on;
1154         if (style->labeltype == LABEL_MANUAL) {
1155                 font_old = style->labelfont;
1156                 desc_on = true;
1157         } else {
1158                 font_old = style->font;
1159                 desc_on = false;
1160         }
1161
1162         LyXFont::FONT_FAMILY family_type = LyXFont::ROMAN_FAMILY;
1163         LyXFont::FONT_SERIES series_type = LyXFont::MEDIUM_SERIES;
1164         LyXFont::FONT_SHAPE  shape_type  = LyXFont::UP_SHAPE;
1165         bool is_em = false;
1166
1167         stack<PAR_TAG> tag_state;
1168         // parsing main loop
1169         for (pos_type i = 0; i < size(); ++i) {
1170
1171                 PAR_TAG tag_close = PAR_NONE;
1172                 list < PAR_TAG > tag_open;
1173
1174                 LyXFont const font = getFont(buf.params(), i, outerfont);
1175
1176                 if (font_old.family() != font.family()) {
1177                         switch (family_type) {
1178                         case LyXFont::SANS_FAMILY:
1179                                 tag_close |= SF;
1180                                 break;
1181                         case LyXFont::TYPEWRITER_FAMILY:
1182                                 tag_close |= TT;
1183                                 break;
1184                         default:
1185                                 break;
1186                         }
1187
1188                         family_type = font.family();
1189
1190                         switch (family_type) {
1191                         case LyXFont::SANS_FAMILY:
1192                                 tag_open.push_back(SF);
1193                                 break;
1194                         case LyXFont::TYPEWRITER_FAMILY:
1195                                 tag_open.push_back(TT);
1196                                 break;
1197                         default:
1198                                 break;
1199                         }
1200                 }
1201
1202                 if (font_old.series() != font.series()) {
1203                         switch (series_type) {
1204                         case LyXFont::BOLD_SERIES:
1205                                 tag_close |= BF;
1206                                 break;
1207                         default:
1208                                 break;
1209                         }
1210
1211                         series_type = font.series();
1212
1213                         switch (series_type) {
1214                         case LyXFont::BOLD_SERIES:
1215                                 tag_open.push_back(BF);
1216                                 break;
1217                         default:
1218                                 break;
1219                         }
1220
1221                 }
1222
1223                 if (font_old.shape() != font.shape()) {
1224                         switch (shape_type) {
1225                         case LyXFont::ITALIC_SHAPE:
1226                                 tag_close |= IT;
1227                                 break;
1228                         case LyXFont::SLANTED_SHAPE:
1229                                 tag_close |= SL;
1230                                 break;
1231                         default:
1232                                 break;
1233                         }
1234
1235                         shape_type = font.shape();
1236
1237                         switch (shape_type) {
1238                         case LyXFont::ITALIC_SHAPE:
1239                                 tag_open.push_back(IT);
1240                                 break;
1241                         case LyXFont::SLANTED_SHAPE:
1242                                 tag_open.push_back(SL);
1243                                 break;
1244                         default:
1245                                 break;
1246                         }
1247                 }
1248                 // handle <em> tag
1249                 if (font_old.emph() != font.emph()) {
1250                         if (font.emph() == LyXFont::ON) {
1251                                 tag_open.push_back(EM);
1252                                 is_em = true;
1253                         }
1254                         else if (is_em) {
1255                                 tag_close |= EM;
1256                                 is_em = false;
1257                         }
1258                 }
1259
1260                 list < PAR_TAG > temp;
1261                 while (!tag_state.empty() && tag_close) {
1262                         PAR_TAG k =  tag_state.top();
1263                         tag_state.pop();
1264                         os << "</" << tag_name(k) << '>';
1265                         if (tag_close & k)
1266                                 reset(tag_close,k);
1267                         else
1268                                 temp.push_back(k);
1269                 }
1270
1271                 for(list< PAR_TAG >::const_iterator j = temp.begin();
1272                     j != temp.end(); ++j) {
1273                         tag_state.push(*j);
1274                         os << '<' << tag_name(*j) << '>';
1275                 }
1276
1277                 for(list< PAR_TAG >::const_iterator j = tag_open.begin();
1278                     j != tag_open.end(); ++j) {
1279                         tag_state.push(*j);
1280                         os << '<' << tag_name(*j) << '>';
1281                 }
1282
1283                 value_type c = getChar(i);
1284
1285
1286                 if (c == Paragraph::META_INSET) {
1287                         getInset(i)->linuxdoc(buf, os, runparams);
1288                         font_old = font;
1289                         continue;
1290                 }
1291
1292                 if (style->latexparam() == "CDATA") {
1293                         // "TeX"-Mode on == > SGML-Mode on.
1294                         if (c != '\0')
1295                                 os << c;
1296                         ++char_line_count;
1297                 } else {
1298                         bool ws;
1299                         string str;
1300                         boost::tie(ws, str) = sgml::escapeChar(c);
1301                         if (ws && !isFreeSpacing()) {
1302                                 // in freespacing mode, spaces are
1303                                 // non-breaking characters
1304                                 if (desc_on) { // if char is ' ' then...
1305                                         ++char_line_count;
1306                                         sgmlLineBreak(os, char_line_count, 6);
1307                                         os << "</tag>";
1308                                         desc_on = false;
1309                                 } else  {
1310                                         sgmlLineBreak(os, char_line_count, 1);
1311                                         os << c;
1312                                 }
1313                         } else {
1314                                 os << str;
1315                                 char_line_count += str.length();
1316                         }
1317                 }
1318                 font_old = font;
1319         }
1320
1321         while (!tag_state.empty()) {
1322                 os << "</" << tag_name(tag_state.top()) << '>';
1323                 tag_state.pop();
1324         }
1325
1326         // resets description flag correctly
1327         if (desc_on) {
1328                 // <tag> not closed...
1329                 sgmlLineBreak(os, char_line_count, 6);
1330                 os << "</tag>";
1331         }
1332 }
1333
1334
1335 bool Paragraph::emptyTag() const
1336 {
1337         for (pos_type i = 0; i < size(); ++i) {
1338                 if (isInset(i)) {
1339                         InsetBase const * inset = getInset(i);
1340                         InsetBase::Code lyx_code = inset->lyxCode();
1341                         if (lyx_code != InsetBase::TOC_CODE &&
1342                             lyx_code != InsetBase::INCLUDE_CODE &&
1343                             lyx_code != InsetBase::GRAPHICS_CODE &&
1344                             lyx_code != InsetBase::ERT_CODE &&
1345                             lyx_code != InsetBase::FLOAT_CODE &&
1346                             lyx_code != InsetBase::TABULAR_CODE) {
1347                                 return false;
1348                         }
1349                 } else {
1350                         value_type c = getChar(i);
1351                         if (c != ' ' && c != '\t')
1352                                 return false;
1353                 }
1354         }
1355         return true;
1356 }
1357
1358
1359 string Paragraph::getID(Buffer const & buf, OutputParams const & runparams) const
1360 {
1361         for (pos_type i = 0; i < size(); ++i) {
1362                 if (isInset(i)) {
1363                         InsetBase const * inset = getInset(i);
1364                         InsetBase::Code lyx_code = inset->lyxCode();
1365                         if (lyx_code == InsetBase::LABEL_CODE) {
1366                                 string const id = static_cast<InsetCommand const *>(inset)->getContents();
1367                                 return "id=\"" + sgml::cleanID(buf, runparams, id) + "\"";
1368                         }
1369                 }
1370
1371         }
1372         return string();
1373 }
1374
1375
1376 pos_type Paragraph::getFirstWord(Buffer const & buf, ostream & os, OutputParams const & runparams) const
1377 {
1378         pos_type i;
1379         for (i = 0; i < size(); ++i) {
1380                 if (isInset(i)) {
1381                         InsetBase const * inset = getInset(i);
1382                         inset->docbook(buf, os, runparams);
1383                 } else {
1384                         value_type c = getChar(i);
1385                         if (c == ' ')
1386                                 break;
1387                         bool ws;
1388                         string str;
1389                         boost::tie(ws, str) = sgml::escapeChar(c);
1390
1391                         os << str;
1392                 }
1393         }
1394         return i;
1395 }
1396
1397
1398 bool Paragraph::onlyText(Buffer const & buf, LyXFont const & outerfont, pos_type initial) const
1399 {
1400         LyXFont font_old;
1401
1402         for (pos_type i = initial; i < size(); ++i) {
1403                 LyXFont font = getFont(buf.params(), i, outerfont);
1404                 if (isInset(i))
1405                         return false;
1406                 if (i != initial && font != font_old)
1407                         return false;
1408                 font_old = font;
1409         }
1410
1411         return true;
1412 }
1413
1414
1415 void Paragraph::simpleDocBookOnePar(Buffer const & buf,
1416                                     ostream & os,
1417                                     OutputParams const & runparams,
1418                                     LyXFont const & outerfont,
1419                                     pos_type initial) const
1420 {
1421         bool emph_flag = false;
1422
1423         LyXLayout_ptr const & style = layout();
1424         LyXFont font_old =
1425                 style->labeltype == LABEL_MANUAL ? style->labelfont : style->font;
1426
1427         if (style->pass_thru && !onlyText(buf, outerfont, initial))
1428                 os << "]]>";
1429
1430         // parsing main loop
1431         for (pos_type i = initial; i < size(); ++i) {
1432                 LyXFont font = getFont(buf.params(), i, outerfont);
1433
1434                 // handle <emphasis> tag
1435                 if (font_old.emph() != font.emph()) {
1436                         if (font.emph() == LyXFont::ON) {
1437                                 os << "<emphasis>";
1438                                 emph_flag = true;
1439                         } else if (i != initial) {
1440                                 os << "</emphasis>";
1441                                 emph_flag = false;
1442                         }
1443                 }
1444
1445                 if (isInset(i)) {
1446                         InsetBase const * inset = getInset(i);
1447                         inset->docbook(buf, os, runparams);
1448                 } else {
1449                         value_type c = getChar(i);
1450                         bool ws;
1451                         string str;
1452                         boost::tie(ws, str) = sgml::escapeChar(c);
1453
1454                         if (style->pass_thru)
1455                                 os << c;
1456                         else
1457                                 os << str;
1458                 }
1459                 font_old = font;
1460         }
1461
1462         if (emph_flag) {
1463                 os << "</emphasis>";
1464         }
1465
1466         if (style->free_spacing)
1467                 os << '\n';
1468         if (style->pass_thru && !onlyText(buf, outerfont, initial))
1469                 os << "<![CDATA[";
1470 }
1471
1472
1473 namespace {
1474
1475 /// return true if the char is a meta-character for an inset
1476 inline
1477 bool IsInsetChar(char c)
1478 {
1479         return (c == Paragraph::META_INSET);
1480 }
1481
1482 } // namespace anon
1483
1484
1485
1486 bool Paragraph::isHfill(pos_type pos) const
1487 {
1488         return isInset(pos)
1489                 && getInset(pos)->lyxCode() == InsetBase::HFILL_CODE;
1490 }
1491
1492
1493 bool Paragraph::isNewline(pos_type pos) const
1494 {
1495         return isInset(pos)
1496                 && getInset(pos)->lyxCode() == InsetBase::NEWLINE_CODE;
1497 }
1498
1499
1500 bool Paragraph::isSeparator(pos_type pos) const
1501 {
1502         return IsSeparatorChar(getChar(pos));
1503 }
1504
1505
1506 bool Paragraph::isLineSeparator(pos_type pos) const
1507 {
1508         value_type const c = getChar(pos);
1509         return IsLineSeparatorChar(c)
1510                 || (IsInsetChar(c) && getInset(pos) &&
1511                 getInset(pos)->isLineSeparator());
1512 }
1513
1514
1515 /// Used by the spellchecker
1516 bool Paragraph::isLetter(pos_type pos) const
1517 {
1518         if (isInset(pos))
1519                 return getInset(pos)->isLetter();
1520         else {
1521                 value_type const c = getChar(pos);
1522                 return IsLetterChar(c) || IsDigit(c);
1523         }
1524 }
1525
1526
1527 Language const *
1528 Paragraph::getParLanguage(BufferParams const & bparams) const
1529 {
1530         if (!empty())
1531                 return getFirstFontSettings().language();
1532 #ifdef WITH_WARNINGS
1533 #warning FIXME we should check the prev par as well (Lgb)
1534 #endif
1535         return bparams.language;
1536 }
1537
1538
1539 bool Paragraph::isRightToLeftPar(BufferParams const & bparams) const
1540 {
1541         return lyxrc.rtl_support
1542                 && getParLanguage(bparams)->RightToLeft()
1543                 && ownerCode() != InsetBase::ERT_CODE;
1544 }
1545
1546
1547 void Paragraph::changeLanguage(BufferParams const & bparams,
1548                                Language const * from, Language const * to)
1549 {
1550         for (pos_type i = 0; i < size(); ++i) {
1551                 LyXFont font = getFontSettings(bparams, i);
1552                 if (font.language() == from) {
1553                         font.setLanguage(to);
1554                         setFont(i, font);
1555                 }
1556         }
1557 }
1558
1559
1560 bool Paragraph::isMultiLingual(BufferParams const & bparams) const
1561 {
1562         Language const * doc_language = bparams.language;
1563         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
1564         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
1565
1566         for (; cit != end; ++cit)
1567                 if (cit->font().language() != ignore_language &&
1568                     cit->font().language() != latex_language &&
1569                     cit->font().language() != doc_language)
1570                         return true;
1571         return false;
1572 }
1573
1574
1575 // Convert the paragraph to a string.
1576 // Used for building the table of contents
1577 string const Paragraph::asString(Buffer const & buffer, 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() == InsetBase::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 }
1648
1649
1650 void Paragraph::setContentsFromPar(Paragraph const & par)
1651 {
1652         pimpl_->setContentsFromPar(par);
1653 }
1654
1655
1656 void Paragraph::trackChanges(Change::Type type)
1657 {
1658         pimpl_->trackChanges(type);
1659 }
1660
1661
1662 void Paragraph::untrackChanges()
1663 {
1664         pimpl_->untrackChanges();
1665 }
1666
1667
1668 void Paragraph::cleanChanges()
1669 {
1670         pimpl_->cleanChanges();
1671 }
1672
1673
1674 Change::Type Paragraph::lookupChange(lyx::pos_type pos) const
1675 {
1676         BOOST_ASSERT(empty() || pos < size());
1677         return pimpl_->lookupChange(pos);
1678 }
1679
1680
1681 Change const Paragraph::lookupChangeFull(lyx::pos_type pos) const
1682 {
1683         BOOST_ASSERT(empty() || pos < size());
1684         return pimpl_->lookupChangeFull(pos);
1685 }
1686
1687
1688 bool Paragraph::isChanged(pos_type start, pos_type end) const
1689 {
1690         return pimpl_->isChanged(start, end);
1691 }
1692
1693
1694 bool Paragraph::isChangeEdited(pos_type start, pos_type end) const
1695 {
1696         return pimpl_->isChangeEdited(start, end);
1697 }
1698
1699
1700 void Paragraph::setChange(lyx::pos_type pos, Change::Type type)
1701 {
1702         pimpl_->setChange(pos, type);
1703 }
1704
1705
1706 void Paragraph::markErased()
1707 {
1708         pimpl_->markErased();
1709 }
1710
1711
1712 void Paragraph::acceptChange(pos_type start, pos_type end)
1713 {
1714         return pimpl_->acceptChange(start, end);
1715 }
1716
1717
1718 void Paragraph::rejectChange(pos_type start, pos_type end)
1719 {
1720         return pimpl_->rejectChange(start, end);
1721 }
1722
1723
1724 int Paragraph::id() const
1725 {
1726         return pimpl_->id_;
1727 }
1728
1729
1730 LyXLayout_ptr const & Paragraph::layout() const
1731 {
1732         return layout_;
1733 }
1734
1735
1736 void Paragraph::layout(LyXLayout_ptr const & new_layout)
1737 {
1738         layout_ = new_layout;
1739 }
1740
1741
1742 UpdatableInset * Paragraph::inInset() const
1743 {
1744         return pimpl_->inset_owner;
1745 }
1746
1747
1748 InsetBase::Code Paragraph::ownerCode() const
1749 {
1750         return pimpl_->inset_owner
1751                 ? pimpl_->inset_owner->lyxCode() : InsetBase::NO_CODE;
1752 }
1753
1754
1755 void Paragraph::clearContents()
1756 {
1757         text_.clear();
1758 }
1759
1760
1761 void Paragraph::setChar(pos_type pos, value_type c)
1762 {
1763         text_[pos] = c;
1764 }
1765
1766
1767 ParagraphParameters & Paragraph::params()
1768 {
1769         return pimpl_->params;
1770 }
1771
1772
1773 ParagraphParameters const & Paragraph::params() const
1774 {
1775         return pimpl_->params;
1776 }
1777
1778
1779 bool Paragraph::isFreeSpacing() const
1780 {
1781         if (layout()->free_spacing)
1782                 return true;
1783
1784         // for now we just need this, later should we need this in some
1785         // other way we can always add a function to InsetBase too.
1786         return ownerCode() == InsetBase::ERT_CODE;
1787 }
1788
1789
1790 bool Paragraph::allowEmpty() const
1791 {
1792         if (layout()->keepempty)
1793                 return true;
1794         return ownerCode() == InsetBase::ERT_CODE;
1795 }
1796
1797
1798 Row & Paragraph::getRow(pos_type pos)
1799 {
1800         BOOST_ASSERT(!rows().empty());
1801
1802         RowList::iterator rit = rows_.end();
1803         RowList::iterator const begin = rows_.begin();
1804
1805         for (--rit; rit != begin && rit->pos() > pos; --rit)
1806                 ;
1807
1808         return *rit;
1809 }
1810
1811
1812 Row const & Paragraph::getRow(pos_type pos) const
1813 {
1814         BOOST_ASSERT(!rows().empty());
1815
1816         RowList::const_iterator rit = rows_.end();
1817         RowList::const_iterator const begin = rows_.begin();
1818
1819         for (--rit; rit != begin && rit->pos() > pos; --rit)
1820                 ;
1821
1822         return *rit;
1823 }
1824
1825
1826 size_t Paragraph::pos2row(pos_type pos) const
1827 {
1828         BOOST_ASSERT(!rows().empty());
1829
1830         RowList::const_iterator rit = rows_.end();
1831         RowList::const_iterator const begin = rows_.begin();
1832
1833         for (--rit; rit != begin && rit->pos() > pos; --rit)
1834                 ;
1835
1836         return rit - begin;
1837 }
1838
1839
1840 unsigned char Paragraph::transformChar(unsigned char c, pos_type pos) const
1841 {
1842         if (!Encodings::is_arabic(c))
1843                 if (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 && IsDigit(c))
1844                         return c + (0xb0 - '0');
1845                 else
1846                         return c;
1847
1848         unsigned char const prev_char = pos > 0 ? getChar(pos - 1) : ' ';
1849         unsigned char next_char = ' ';
1850
1851         for (pos_type i = pos + 1, end = size(); i < end; ++i) {
1852                 unsigned char const par_char = getChar(i);
1853                 if (!Encodings::IsComposeChar_arabic(par_char)) {
1854                         next_char = par_char;
1855                         break;
1856                 }
1857         }
1858
1859         if (Encodings::is_arabic(next_char)) {
1860                 if (Encodings::is_arabic(prev_char) &&
1861                         !Encodings::is_arabic_special(prev_char))
1862                         return Encodings::TransformChar(c, Encodings::FORM_MEDIAL);
1863                 else
1864                         return Encodings::TransformChar(c, Encodings::FORM_INITIAL);
1865         } else {
1866                 if (Encodings::is_arabic(prev_char) &&
1867                         !Encodings::is_arabic_special(prev_char))
1868                         return Encodings::TransformChar(c, Encodings::FORM_FINAL);
1869                 else
1870                         return Encodings::TransformChar(c, Encodings::FORM_ISOLATED);
1871         }
1872 }
1873
1874
1875 void Paragraph::dump() const
1876 {
1877         lyxerr << "Paragraph::dump: rows.size(): " << rows_.size() << endl;
1878         for (size_t i = 0; i != rows_.size(); ++i) {
1879                 lyxerr << "  row " << i << ":   ";
1880                 rows_[i].dump();
1881         }
1882 }