src/paragraph.C

   1 /**
   2  * \file paragraph.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Asger Alstrup
   7  * \author Lars Gullik Bjønnes
   8  * \author Jean-Marc Lasgouttes
   9  * \author Angus Leeming
  10  * \author John Levon
  11  * \author André Pönitz
  12  * \author Dekel Tsur
  13  * \author Jürgen Vigna
  14  *
  15  * Full author contact details are available in file CREDITS.
  16  */
  17
  18 #include <config.h>
  19
  20 #include "paragraph.h"
  21 #include "paragraph_pimpl.h"
  22
  23 #include "buffer.h"
  24 #include "bufferparams.h"
  25 #include "counters.h"
  26 #include "encoding.h"
  27 #include "debug.h"
  28 #include "gettext.h"
  29 #include "language.h"
  30 #include "lyxfont.h"
  31 #include "lyxrc.h"
  32 #include "lyxrow.h"
  33 #include "outputparams.h"
  34 #include "paragraph_funcs.h"
  35 #include "ParagraphList_fwd.h"
  36 #include "sgml.h"
  37 #include "texrow.h"
  38 #include "vspace.h"
  39
  40 #include "insets/insetbibitem.h"
  41 #include "insets/insetoptarg.h"
  42
  43 #include "support/lstrings.h"
  44 #include "support/std_sstream.h"
  45 #include "support/textutils.h"
  46 #include "support/tostr.h"
  47
  48 #include <boost/tuple/tuple.hpp>
  49 #include <boost/bind.hpp>
  50
  51 #include <list>
  52 #include <stack>
  53
  54 using lyx::pos_type;
  55
  56 using lyx::support::contains;
  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         : y(0), height(0), begin_of_body_(0),
  74           pimpl_(new Paragraph::Pimpl(this))
  75 {
  76         //lyxerr << "sizeof Paragraph::Pimpl: " << sizeof(Paragraph::Pimpl) << endl;
  77         itemdepth = 0;
  78         params().clear();
  79 }
  80
  81
  82 Paragraph::Paragraph(Paragraph const & par)
  83         :       itemdepth(par.itemdepth), insetlist(par.insetlist),
  84                 rows(par.rows), y(par.y), height(par.height),
  85                 width(par.width), 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                 y = par.y;
 111                 height = par.height;
 112                 width = par.width;
 113                 layout_ = par.layout();
 114                 text_ = par.text_;
 115                 begin_of_body_ = par.begin_of_body_;
 116
 117                 delete pimpl_;
 118                 pimpl_ = new Pimpl(*par.pimpl_, this);
 119         }
 120         return *this;
 121 }
 122
 123
 124 Paragraph::~Paragraph()
 125 {
 126         delete pimpl_;
 127         //
 128         //lyxerr << "Paragraph::paragraph_id = "
 129         //       << Paragraph::paragraph_id << endl;
 130 }
 131
 132
 133 void Paragraph::write(Buffer const & buf, ostream & os,
 134                           BufferParams const & bparams,
 135                           depth_type & dth) const
 136 {
 137         // The beginning or end of a deeper (i.e. nested) area?
 138         if (dth != params().depth()) {
 139                 if (params().depth() > dth) {
 140                         while (params().depth() > dth) {
 141                                 os << "\n\\begin_deeper ";
 142                                 ++dth;
 143                         }
 144                 } else {
 145                         while (params().depth() < dth) {
 146                                 os << "\n\\end_deeper ";
 147                                 --dth;
 148                         }
 149                 }
 150         }
 151
 152         // First write the layout
 153         os << "\n\\begin_layout " << layout()->name() << '\n';
 154
 155         params().write(os);
 156
 157         LyXFont font1(LyXFont::ALL_INHERIT, bparams.language);
 158
 159         Change running_change = Change(Change::UNCHANGED);
 160         lyx::time_type const curtime(lyx::current_time());
 161
 162         int column = 0;
 163         for (pos_type i = 0; i < size(); ++i) {
 164                 if (!i) {
 165                         os << '\n';
 166                         column = 0;
 167                 }
 168
 169                 Change change = pimpl_->lookupChangeFull(i);
 170                 Changes::lyxMarkChange(os, column, curtime, running_change, change);
 171                 running_change = change;
 172
 173                 // Write font changes
 174                 LyXFont font2 = getFontSettings(bparams, i);
 175                 if (font2 != font1) {
 176                         font2.lyxWriteChanges(font1, os);
 177                         column = 0;
 178                         font1 = font2;
 179                 }
 180
 181                 value_type const c = getChar(i);
 182                 switch (c) {
 183                 case META_INSET:
 184                 {
 185                         InsetBase const * inset = getInset(i);
 186                         if (inset)
 187                                 if (inset->directWrite()) {
 188                                         // international char, let it write
 189                                         // code directly so it's shorter in
 190                                         // the file
 191                                         inset->write(buf, os);
 192                                 } else {
 193                                         os << "\n\\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                                 os << c;
 221                         else
 222                                 lyxerr << "ERROR (Paragraph::writeFile):"
 223                                         " NULL char in structure." << endl;
 224                         ++column;
 225                         break;
 226                 }
 227         }
 228
 229         // to make reading work properly
 230         if (!size()) {
 231                 running_change = pimpl_->lookupChange(0);
 232                 Changes::lyxMarkChange(os, column, curtime,
 233                         Change(Change::UNCHANGED), running_change);
 234         }
 235         Changes::lyxMarkChange(os, column, curtime,
 236                 running_change, Change(Change::UNCHANGED));
 237
 238         os << "\n\\end_layout\n";
 239 }
 240
 241
 242 void Paragraph::validate(LaTeXFeatures & features) const
 243 {
 244         pimpl_->validate(features, *layout());
 245 }
 246
 247
 248 void Paragraph::eraseIntern(lyx::pos_type pos)
 249 {
 250         pimpl_->eraseIntern(pos);
 251 }
 252
 253
 254 bool Paragraph::erase(pos_type pos)
 255 {
 256         return pimpl_->erase(pos);
 257 }
 258
 259
 260 int Paragraph::erase(pos_type start, pos_type end)
 261 {
 262         return pimpl_->erase(start, end);
 263 }
 264
 265
 266 void Paragraph::insert(pos_type start, string const & str,
 267                        LyXFont const & font)
 268 {
 269         int size = str.size();
 270         for (int i = 0 ; i < size ; ++i)
 271                 insertChar(start + i, str[i], font);
 272 }
 273
 274
 275 bool Paragraph::checkInsertChar(LyXFont &)
 276 {
 277         return true;
 278 }
 279
 280
 281 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c)
 282 {
 283         insertChar(pos, c, LyXFont(LyXFont::ALL_INHERIT));
 284 }
 285
 286
 287 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
 288                            LyXFont const & font, Change change)
 289 {
 290         pimpl_->insertChar(pos, c, font, change);
 291 }
 292
 293
 294 void Paragraph::insertInset(pos_type pos, InsetBase * inset)
 295 {
 296         insertInset(pos, inset, LyXFont(LyXFont::ALL_INHERIT));
 297 }
 298
 299
 300 void Paragraph::insertInset(pos_type pos, InsetBase * inset,
 301         LyXFont const & font, Change change)
 302 {
 303         pimpl_->insertInset(pos, inset, font, change);
 304 }
 305
 306
 307 bool Paragraph::insetAllowed(InsetOld_code code)
 308 {
 309         return !pimpl_->inset_owner || pimpl_->inset_owner->insetAllowed(code);
 310 }
 311
 312
 313 InsetBase * Paragraph::getInset(pos_type pos)
 314 {
 315         BOOST_ASSERT(pos < size());
 316         return insetlist.get(pos);
 317 }
 318
 319
 320 InsetBase const * Paragraph::getInset(pos_type pos) const
 321 {
 322         BOOST_ASSERT(pos < size());
 323         return insetlist.get(pos);
 324 }
 325
 326
 327 // Gets uninstantiated font setting at position.
 328 LyXFont const Paragraph::getFontSettings(BufferParams const & bparams,
 329                                          pos_type pos) const
 330 {
 331         if (pos > size()) {
 332                 lyxerr << " pos: " << pos << " size: " << size() << endl;
 333                 BOOST_ASSERT(pos <= size());
 334         }
 335
 336         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 337         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
 338         for (; cit != end; ++cit)
 339                 if (cit->pos() >= pos)
 340                         break;
 341
 342         if (cit != end)
 343                 return cit->font();
 344
 345         if (pos == size() && !empty())
 346                 return getFontSettings(bparams, pos - 1);
 347
 348         return LyXFont(LyXFont::ALL_INHERIT, getParLanguage(bparams));
 349 }
 350
 351
 352 lyx::pos_type Paragraph::getEndPosOfFontSpan(lyx::pos_type pos) const
 353 {
 354         BOOST_ASSERT(pos <= size());
 355
 356         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 357         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
 358         for (; cit != end; ++cit)
 359                 if (cit->pos() >= pos)
 360                         return cit->pos();
 361
 362         // This should not happen, but if so, we take no chances.
 363         //lyxerr << "Paragraph::getEndPosOfFontSpan: This should not happen!"
 364         //      << endl;
 365         return pos;
 366 }
 367
 368
 369 // Gets uninstantiated font setting at position 0
 370 LyXFont const Paragraph::getFirstFontSettings() const
 371 {
 372         if (!empty() && !pimpl_->fontlist.empty())
 373                 return pimpl_->fontlist[0].font();
 374
 375         return LyXFont(LyXFont::ALL_INHERIT);
 376 }
 377
 378
 379 // Gets the fully instantiated font at a given position in a paragraph
 380 // This is basically the same function as LyXText::GetFont() in text2.C.
 381 // The difference is that this one is used for generating the LaTeX file,
 382 // and thus cosmetic "improvements" are disallowed: This has to deliver
 383 // the true picture of the buffer. (Asger)
 384 LyXFont const Paragraph::getFont(BufferParams const & bparams, pos_type pos,
 385                                  LyXFont const & outerfont) const
 386 {
 387         BOOST_ASSERT(pos >= 0);
 388
 389         LyXLayout_ptr const & lout = layout();
 390
 391         pos_type const body_pos = beginOfBody();
 392
 393         LyXFont layoutfont;
 394         if (pos < body_pos)
 395                 layoutfont = lout->labelfont;
 396         else
 397                 layoutfont = lout->font;
 398
 399         LyXFont font = getFontSettings(bparams, pos);
 400         font.realize(layoutfont);
 401         font.realize(outerfont);
 402         font.realize(bparams.getLyXTextClass().defaultfont());
 403
 404         return font;
 405 }
 406
 407
 408 LyXFont const Paragraph::getLabelFont(BufferParams const & bparams,
 409                                       LyXFont const & outerfont) const
 410 {
 411         LyXFont tmpfont = layout()->labelfont;
 412         tmpfont.setLanguage(getParLanguage(bparams));
 413         tmpfont.realize(outerfont);
 414         tmpfont.realize(bparams.getLyXTextClass().defaultfont());
 415         return tmpfont;
 416 }
 417
 418
 419 LyXFont const Paragraph::getLayoutFont(BufferParams const & bparams,
 420                                        LyXFont const & outerfont) const
 421 {
 422         LyXFont tmpfont = layout()->font;
 423         tmpfont.setLanguage(getParLanguage(bparams));
 424         tmpfont.realize(outerfont);
 425         tmpfont.realize(bparams.getLyXTextClass().defaultfont());
 426         return tmpfont;
 427 }
 428
 429
 430 /// Returns the height of the highest font in range
 431 LyXFont_size
 432 Paragraph::highestFontInRange(pos_type startpos, pos_type endpos,
 433                               LyXFont_size def_size) const
 434 {
 435         if (pimpl_->fontlist.empty())
 436                 return def_size;
 437
 438         Pimpl::FontList::const_iterator end_it = pimpl_->fontlist.begin();
 439         Pimpl::FontList::const_iterator const end = pimpl_->fontlist.end();
 440         for (; end_it != end; ++end_it) {
 441                 if (end_it->pos() >= endpos)
 442                         break;
 443         }
 444
 445         if (end_it != end)
 446                 ++end_it;
 447
 448         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 449         for (; cit != end; ++cit) {
 450                 if (cit->pos() >= startpos)
 451                         break;
 452         }
 453
 454         LyXFont::FONT_SIZE maxsize = LyXFont::SIZE_TINY;
 455         for (; cit != end_it; ++cit) {
 456                 LyXFont::FONT_SIZE size = cit->font().size();
 457                 if (size == LyXFont::INHERIT_SIZE)
 458                         size = def_size;
 459                 if (size > maxsize && size <= LyXFont::SIZE_HUGER)
 460                         maxsize = size;
 461         }
 462         return maxsize;
 463 }
 464
 465
 466 Paragraph::value_type
 467 Paragraph::getUChar(BufferParams const & bparams, pos_type pos) const
 468 {
 469         value_type c = getChar(pos);
 470         if (!lyxrc.rtl_support)
 471                 return c;
 472
 473         value_type uc = c;
 474         switch (c) {
 475         case '(':
 476                 uc = ')';
 477                 break;
 478         case ')':
 479                 uc = '(';
 480                 break;
 481         case '[':
 482                 uc = ']';
 483                 break;
 484         case ']':
 485                 uc = '[';
 486                 break;
 487         case '{':
 488                 uc = '}';
 489                 break;
 490         case '}':
 491                 uc = '{';
 492                 break;
 493         case '<':
 494                 uc = '>';
 495                 break;
 496         case '>':
 497                 uc = '<';
 498                 break;
 499         }
 500         if (uc != c && getFontSettings(bparams, pos).isRightToLeft())
 501                 return uc;
 502         else
 503                 return c;
 504 }
 505
 506
 507 void Paragraph::setFont(pos_type pos, LyXFont const & font)
 508 {
 509         BOOST_ASSERT(pos <= size());
 510
 511         // First, reduce font against layout/label font
 512         // Update: The setCharFont() routine in text2.C already
 513         // reduces font, so we don't need to do that here. (Asger)
 514         // No need to simplify this because it will disappear
 515         // in a new kernel. (Asger)
 516         // Next search font table
 517
 518         Pimpl::FontList::iterator beg = pimpl_->fontlist.begin();
 519         Pimpl::FontList::iterator it = beg;
 520         Pimpl::FontList::iterator endit = pimpl_->fontlist.end();
 521         for (; it != endit; ++it) {
 522                 if (it->pos() >= pos)
 523                         break;
 524         }
 525         unsigned int i = distance(beg, it);
 526         bool notfound = (it == endit);
 527
 528         if (!notfound && pimpl_->fontlist[i].font() == font)
 529                 return;
 530
 531         bool begin = pos == 0 || notfound ||
 532                 (i > 0 && pimpl_->fontlist[i - 1].pos() == pos - 1);
 533         // Is position pos is a beginning of a font block?
 534         bool end = !notfound && pimpl_->fontlist[i].pos() == pos;
 535         // Is position pos is the end of a font block?
 536         if (begin && end) { // A single char block
 537                 if (i + 1 < pimpl_->fontlist.size() &&
 538                     pimpl_->fontlist[i + 1].font() == font) {
 539                         // Merge the singleton block with the next block
 540                         pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i);
 541                         if (i > 0 && pimpl_->fontlist[i - 1].font() == font)
 542                                 pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i - 1);
 543                 } else if (i > 0 && pimpl_->fontlist[i - 1].font() == font) {
 544                         // Merge the singleton block with the previous block
 545                         pimpl_->fontlist[i - 1].pos(pos);
 546                         pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i);
 547                 } else
 548                         pimpl_->fontlist[i].font(font);
 549         } else if (begin) {
 550                 if (i > 0 && pimpl_->fontlist[i - 1].font() == font)
 551                         pimpl_->fontlist[i - 1].pos(pos);
 552                 else
 553                         pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i,
 554                                         Pimpl::FontTable(pos, font));
 555         } else if (end) {
 556                 pimpl_->fontlist[i].pos(pos - 1);
 557                 if (!(i + 1 < pimpl_->fontlist.size() &&
 558                       pimpl_->fontlist[i + 1].font() == font))
 559                         pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i + 1,
 560                                         Pimpl::FontTable(pos, font));
 561         } else { // The general case. The block is splitted into 3 blocks
 562                 pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i,
 563                                 Pimpl::FontTable(pos - 1, pimpl_->fontlist[i].font()));
 564                 pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i + 1,
 565                                 Pimpl::FontTable(pos, font));
 566         }
 567 }
 568
 569
 570 void Paragraph::makeSameLayout(Paragraph const & par)
 571 {
 572         layout(par.layout());
 573         // move to pimpl?
 574         params() = par.params();
 575 }
 576
 577
 578 int Paragraph::stripLeadingSpaces()
 579 {
 580         if (isFreeSpacing())
 581                 return 0;
 582
 583         int i = 0;
 584         while (!empty() && (isNewline(0) || isLineSeparator(0))) {
 585                 pimpl_->eraseIntern(0);
 586                 ++i;
 587         }
 588
 589         return i;
 590 }
 591
 592
 593 bool Paragraph::hasSameLayout(Paragraph const & par) const
 594 {
 595         return par.layout() == layout() && params().sameLayout(par.params());
 596 }
 597
 598
 599 Paragraph::depth_type Paragraph::getDepth() const
 600 {
 601         return params().depth();
 602 }
 603
 604
 605 Paragraph::depth_type Paragraph::getMaxDepthAfter() const
 606 {
 607         if (layout()->isEnvironment())
 608                 return params().depth() + 1;
 609         else
 610                 return params().depth();
 611 }
 612
 613
 614 char Paragraph::getAlign() const
 615 {
 616         return params().align();
 617 }
 618
 619
 620 string const & Paragraph::getLabelstring() const
 621 {
 622         return params().labelString();
 623 }
 624
 625
 626 // the next two functions are for the manual labels
 627 string const Paragraph::getLabelWidthString() const
 628 {
 629         if (!params().labelWidthString().empty())
 630                 return params().labelWidthString();
 631         else
 632                 return _("Senseless with this layout!");
 633 }
 634
 635
 636 void Paragraph::setLabelWidthString(string const & s)
 637 {
 638         params().labelWidthString(s);
 639 }
 640
 641
 642 void Paragraph::applyLayout(LyXLayout_ptr const & new_layout)
 643 {
 644         layout(new_layout);
 645         params().labelWidthString(string());
 646         params().align(LYX_ALIGN_LAYOUT);
 647         params().spacing(Spacing(Spacing::Default));
 648 }
 649
 650
 651 pos_type Paragraph::beginOfBody() const
 652 {
 653         return begin_of_body_;
 654 }
 655
 656
 657 void Paragraph::setBeginOfBody()
 658 {
 659         if (layout()->labeltype != LABEL_MANUAL) {
 660                 begin_of_body_ = 0;
 661                 return;
 662         }
 663
 664         // Unroll the first two cycles of the loop
 665         // and remember the previous character to
 666         // remove unnecessary getChar() calls
 667         pos_type i = 0;
 668         pos_type end = size();
 669         if (i < end && !isNewline(i)) {
 670                 ++i;
 671                 char previous_char = 0;
 672                 char temp = 0;
 673                 if (i < end) {
 674                         previous_char = text_[i];
 675                         if (!isNewline(i)) {
 676                                 ++i;
 677                                 while (i < end && previous_char != ' ') {
 678                                         temp = text_[i];
 679                                         if (isNewline(i))
 680                                                 break;
 681                                         ++i;
 682                                         previous_char = temp;
 683                                 }
 684                         }
 685                 }
 686         }
 687
 688         begin_of_body_ = i;
 689 }
 690
 691
 692 // returns -1 if inset not found
 693 int Paragraph::getPositionOfInset(InsetBase const * inset) const
 694 {
 695         // Find the entry.
 696         InsetList::const_iterator it = insetlist.begin();
 697         InsetList::const_iterator end = insetlist.end();
 698         for (; it != end; ++it)
 699                 if (it->inset == inset)
 700                         return it->pos;
 701         return -1;
 702 }
 703
 704
 705 InsetBibitem * Paragraph::bibitem() const
 706 {
 707         if (!insetlist.empty()) {
 708                 InsetBase * inset = insetlist.begin()->inset;
 709                 if (inset->lyxCode() == InsetBase::BIBTEX_CODE)
 710                         return static_cast<InsetBibitem *>(inset);
 711         }
 712         return 0;
 713 }
 714
 715
 716 bool Paragraph::forceDefaultParagraphs() const
 717 {
 718         return inInset() && inInset()->forceDefaultParagraphs(inInset());
 719 }
 720
 721
 722 bool Paragraph::autoBreakRows() const
 723 {
 724         return inInset() && static_cast<InsetText *>(inInset())->getAutoBreakRows();
 725 }
 726
 727
 728 namespace {
 729
 730 // paragraphs inside floats need different alignment tags to avoid
 731 // unwanted space
 732
 733 bool noTrivlistCentering(InsetBase::Code code)
 734 {
 735         return code == InsetBase::FLOAT_CODE || code == InsetBase::WRAP_CODE;
 736 }
 737
 738
 739 string correction(string const & orig)
 740 {
 741         if (orig == "flushleft")
 742                 return "raggedright";
 743         if (orig == "flushright")
 744                 return "raggedleft";
 745         if (orig == "center")
 746                 return "centering";
 747         return orig;
 748 }
 749
 750
 751 string const corrected_env(string const & suffix, string const & env,
 752         InsetBase::Code code)
 753 {
 754         string output = suffix + "{";
 755         if (noTrivlistCentering(code))
 756                 output += correction(env);
 757         else
 758                 output += env;
 759         return output + "}";
 760 }
 761
 762 } // namespace anon
 763
 764
 765 // This could go to ParagraphParameters if we want to
 766 int Paragraph::startTeXParParams(BufferParams const & bparams,
 767                                  ostream & os, bool moving_arg) const
 768 {
 769         int column = 0;
 770
 771         if (params().noindent()) {
 772                 os << "\\noindent ";
 773                 column += 10;
 774         }
 775
 776         switch (params().align()) {
 777         case LYX_ALIGN_NONE:
 778         case LYX_ALIGN_BLOCK:
 779         case LYX_ALIGN_LAYOUT:
 780         case LYX_ALIGN_SPECIAL:
 781                 break;
 782         case LYX_ALIGN_LEFT:
 783         case LYX_ALIGN_RIGHT:
 784         case LYX_ALIGN_CENTER:
 785                 if (moving_arg) {
 786                         os << "\\protect";
 787                         column = 8;
 788                 }
 789                 break;
 790         }
 791
 792         switch (params().align()) {
 793         case LYX_ALIGN_NONE:
 794         case LYX_ALIGN_BLOCK:
 795         case LYX_ALIGN_LAYOUT:
 796         case LYX_ALIGN_SPECIAL:
 797                 break;
 798         case LYX_ALIGN_LEFT: {
 799                 string output;
 800                 if (getParLanguage(bparams)->babel() != "hebrew")
 801                         output = corrected_env("\\begin", "flushleft", ownerCode());
 802                 else
 803                         output = corrected_env("\\begin", "flushright", ownerCode());
 804                 os << output;
 805                 column += output.size();
 806                 break;
 807         } case LYX_ALIGN_RIGHT: {
 808                 string output;
 809                 if (getParLanguage(bparams)->babel() != "hebrew")
 810                         output = corrected_env("\\begin", "flushright", ownerCode());
 811                 else
 812                         output = corrected_env("\\begin", "flushleft", ownerCode());
 813                 os << output;
 814                 column += output.size();
 815                 break;
 816         } case LYX_ALIGN_CENTER: {
 817                 string output;
 818                 output = corrected_env("\\begin", "center", ownerCode());
 819                 os << output;
 820                 column += output.size();
 821                 break;
 822         }
 823         }
 824
 825         return column;
 826 }
 827
 828
 829 // This could go to ParagraphParameters if we want to
 830 int Paragraph::endTeXParParams(BufferParams const & bparams,
 831                                ostream & os, bool moving_arg) const
 832 {
 833         int column = 0;
 834
 835         switch (params().align()) {
 836         case LYX_ALIGN_NONE:
 837         case LYX_ALIGN_BLOCK:
 838         case LYX_ALIGN_LAYOUT:
 839         case LYX_ALIGN_SPECIAL:
 840                 break;
 841         case LYX_ALIGN_LEFT:
 842         case LYX_ALIGN_RIGHT:
 843         case LYX_ALIGN_CENTER:
 844                 if (moving_arg) {
 845                         os << "\\protect";
 846                         column = 8;
 847                 }
 848                 break;
 849         }
 850
 851         switch (params().align()) {
 852         case LYX_ALIGN_NONE:
 853         case LYX_ALIGN_BLOCK:
 854         case LYX_ALIGN_LAYOUT:
 855         case LYX_ALIGN_SPECIAL:
 856                 break;
 857         case LYX_ALIGN_LEFT: {
 858                 string output;
 859                 if (getParLanguage(bparams)->babel() != "hebrew")
 860                         output = corrected_env("\\par\\end", "flushleft", ownerCode());
 861                 else
 862                         output = corrected_env("\\par\\end", "flushright", ownerCode());
 863                 os << output;
 864                 column += output.size();
 865                 break;
 866         } case LYX_ALIGN_RIGHT: {
 867                 string output;
 868                 if (getParLanguage(bparams)->babel() != "hebrew")
 869                         output = corrected_env("\\par\\end", "flushright", ownerCode());
 870                 else
 871                         output = corrected_env("\\par\\end", "flushleft", ownerCode());
 872                 os << output;
 873                 column += output.size();
 874                 break;
 875         } case LYX_ALIGN_CENTER: {
 876                 string output;
 877                 output = corrected_env("\\par\\end", "center", ownerCode());
 878                 os << output;
 879                 column += output.size();
 880                 break;
 881         }
 882         }
 883
 884         return column;
 885 }
 886
 887
 888 // This one spits out the text of the paragraph
 889 bool Paragraph::simpleTeXOnePar(Buffer const & buf,
 890                                 BufferParams const & bparams,
 891                                 LyXFont const & outerfont,
 892                                 ostream & os, TexRow & texrow,
 893                                 OutputParams const & runparams)
 894 {
 895         lyxerr[Debug::LATEX] << "SimpleTeXOnePar...     " << this << endl;
 896
 897         bool return_value = false;
 898
 899         LyXLayout_ptr style;
 900
 901         // well we have to check if we are in an inset with unlimited
 902         // length (all in one row) if that is true then we don't allow
 903         // any special options in the paragraph and also we don't allow
 904         // any environment other then "Standard" to be valid!
 905         bool asdefault = forceDefaultParagraphs();
 906
 907         if (asdefault) {
 908                 style = bparams.getLyXTextClass().defaultLayout();
 909         } else {
 910                 style = layout();
 911         }
 912
 913         LyXFont basefont;
 914
 915         // Maybe we have to create a optional argument.
 916         pos_type body_pos = beginOfBody();
 917         unsigned int column = 0;
 918
 919         if (body_pos > 0) {
 920                 os << '[';
 921                 ++column;
 922                 basefont = getLabelFont(bparams, outerfont);
 923         } else {
 924                 basefont = getLayoutFont(bparams, outerfont);
 925         }
 926
 927         bool moving_arg = runparams.moving_arg;
 928         moving_arg |= style->needprotect;
 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, moving_arg);
 947         }
 948
 949         for (pos_type i = 0; i < size(); ++i) {
 950                 ++column;
 951                 // First char in paragraph or after label?
 952                 if (i == body_pos) {
 953                         if (body_pos > 0) {
 954                                 if (open_font) {
 955                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
 956                                         open_font = false;
 957                                 }
 958                                 basefont = getLayoutFont(bparams, outerfont);
 959                                 running_font = basefont;
 960                                 os << ']';
 961                                 ++column;
 962                         }
 963                         if (style->isCommand()) {
 964                                 os << '{';
 965                                 ++column;
 966                         }
 967
 968                         if (!asdefault)
 969                                 column += startTeXParParams(bparams, os,
 970                                                             moving_arg);
 971                 }
 972
 973                 value_type c = getChar(i);
 974
 975                 // Fully instantiated font
 976                 LyXFont font = getFont(bparams, i, outerfont);
 977
 978                 LyXFont const last_font = running_font;
 979
 980                 // Spaces at end of font change are simulated to be
 981                 // outside font change, i.e. we write "\textXX{text} "
 982                 // rather than "\textXX{text }". (Asger)
 983                 if (open_font && c == ' ' && i <= size() - 2) {
 984                         LyXFont const & next_font = getFont(bparams, i + 1, outerfont);
 985                         if (next_font != running_font && next_font != font) {
 986                                 font = next_font;
 987                         }
 988                 }
 989
 990                 // We end font definition before blanks
 991                 if (open_font &&
 992                     (font != running_font ||
 993                      font.language() != running_font.language()))
 994                 {
 995                         column += running_font.latexWriteEndChanges(os,
 996                                                                     basefont,
 997                                                                     (i == body_pos-1) ? basefont : font);
 998                         running_font = basefont;
 999                         open_font = false;
1000                 }
1001
1002                 // Blanks are printed before start of fontswitch
1003                 if (c == ' ') {
1004                         // Do not print the separation of the optional argument
1005                         if (i != body_pos - 1) {
1006                                 pimpl_->simpleTeXBlanks(os, texrow, i,
1007                                                        column, font, *style);
1008                         }
1009                 }
1010
1011                 // Do we need to change font?
1012                 if ((font != running_font ||
1013                      font.language() != running_font.language()) &&
1014                         i != body_pos - 1)
1015                 {
1016                         column += font.latexWriteStartChanges(os, basefont,
1017                                                               last_font);
1018                         running_font = font;
1019                         open_font = true;
1020                 }
1021
1022                 Change::Type change = pimpl_->lookupChange(i);
1023
1024                 column += Changes::latexMarkChange(os, running_change, change);
1025                 running_change = change;
1026
1027                 OutputParams rp = runparams;
1028                 rp.moving_arg = moving_arg;
1029                 rp.free_spacing = style->free_spacing;
1030                 pimpl_->simpleTeXSpecialChars(buf, bparams,
1031                                               os, texrow, runparams,
1032                                               font, running_font,
1033                                               basefont, outerfont, open_font,
1034                                               running_change,
1035                                               *style, i, column, c);
1036         }
1037
1038         column += Changes::latexMarkChange(os,
1039                         running_change, Change::UNCHANGED);
1040
1041         // If we have an open font definition, we have to close it
1042         if (open_font) {
1043 #ifdef FIXED_LANGUAGE_END_DETECTION
1044                 if (next_) {
1045                         running_font
1046                                 .latexWriteEndChanges(os, basefont,
1047                                                       next_->getFont(bparams,
1048                                                       0, outerfont));
1049                 } else {
1050                         running_font.latexWriteEndChanges(os, basefont,
1051                                                           basefont);
1052                 }
1053 #else
1054 #ifdef WITH_WARNINGS
1055 //#warning For now we ALWAYS have to close the foreign font settings if they are
1056 //#warning there as we start another \selectlanguage with the next paragraph if
1057 //#warning we are in need of this. This should be fixed sometime (Jug)
1058 #endif
1059                 running_font.latexWriteEndChanges(os, basefont,  basefont);
1060 #endif
1061         }
1062
1063         // Needed if there is an optional argument but no contents.
1064         if (body_pos > 0 && body_pos == size()) {
1065                 os << "]~";
1066                 return_value = false;
1067         }
1068
1069         if (!asdefault) {
1070                 column += endTeXParParams(bparams, os, moving_arg);
1071         }
1072
1073         lyxerr[Debug::LATEX] << "SimpleTeXOnePar...done " << this << endl;
1074         return return_value;
1075 }
1076
1077
1078 namespace {
1079
1080 // checks, if newcol chars should be put into this line
1081 // writes newline, if necessary.
1082 void sgmlLineBreak(ostream & os, string::size_type & colcount,
1083                           string::size_type newcol)
1084 {
1085         colcount += newcol;
1086         if (colcount > lyxrc.ascii_linelen) {
1087                 os << "\n";
1088                 colcount = newcol; // assume write after this call
1089         }
1090 }
1091
1092 enum PAR_TAG {
1093         PAR_NONE=0,
1094         TT = 1,
1095         SF = 2,
1096         BF = 4,
1097         IT = 8,
1098         SL = 16,
1099         EM = 32
1100 };
1101
1102
1103 string tag_name(PAR_TAG const & pt) {
1104         switch (pt) {
1105         case PAR_NONE: return "!-- --";
1106         case TT: return "tt";
1107         case SF: return "sf";
1108         case BF: return "bf";
1109         case IT: return "it";
1110         case SL: return "sl";
1111         case EM: return "em";
1112         }
1113         return "";
1114 }
1115
1116
1117 inline
1118 void operator|=(PAR_TAG & p1, PAR_TAG const & p2)
1119 {
1120         p1 = static_cast<PAR_TAG>(p1 | p2);
1121 }
1122
1123
1124 inline
1125 void reset(PAR_TAG & p1, PAR_TAG const & p2)
1126 {
1127         p1 = static_cast<PAR_TAG>(p1 & ~p2);
1128 }
1129
1130 } // anon
1131
1132
1133 // Handle internal paragraph parsing -- layout already processed.
1134 void Paragraph::simpleLinuxDocOnePar(Buffer const & buf,
1135                                      ostream & os,
1136                                      LyXFont const & outerfont,
1137                                      OutputParams const & runparams,
1138                                      lyx::depth_type /*depth*/) const
1139 {
1140         LyXLayout_ptr const & style = layout();
1141
1142         string::size_type char_line_count = 5;     // Heuristic choice ;-)
1143
1144         // gets paragraph main font
1145         LyXFont font_old;
1146         bool desc_on;
1147         if (style->labeltype == LABEL_MANUAL) {
1148                 font_old = style->labelfont;
1149                 desc_on = true;
1150         } else {
1151                 font_old = style->font;
1152                 desc_on = false;
1153         }
1154
1155         LyXFont::FONT_FAMILY family_type = LyXFont::ROMAN_FAMILY;
1156         LyXFont::FONT_SERIES series_type = LyXFont::MEDIUM_SERIES;
1157         LyXFont::FONT_SHAPE  shape_type  = LyXFont::UP_SHAPE;
1158         bool is_em = false;
1159
1160         stack<PAR_TAG> tag_state;
1161         // parsing main loop
1162         for (pos_type i = 0; i < size(); ++i) {
1163
1164                 PAR_TAG tag_close = PAR_NONE;
1165                 list < PAR_TAG > tag_open;
1166
1167                 LyXFont const font = getFont(buf.params(), i, outerfont);
1168
1169                 if (font_old.family() != font.family()) {
1170                         switch (family_type) {
1171                         case LyXFont::SANS_FAMILY:
1172                                 tag_close |= SF;
1173                                 break;
1174                         case LyXFont::TYPEWRITER_FAMILY:
1175                                 tag_close |= TT;
1176                                 break;
1177                         default:
1178                                 break;
1179                         }
1180
1181                         family_type = font.family();
1182
1183                         switch (family_type) {
1184                         case LyXFont::SANS_FAMILY:
1185                                 tag_open.push_back(SF);
1186                                 break;
1187                         case LyXFont::TYPEWRITER_FAMILY:
1188                                 tag_open.push_back(TT);
1189                                 break;
1190                         default:
1191                                 break;
1192                         }
1193                 }
1194
1195                 if (font_old.series() != font.series()) {
1196                         switch (series_type) {
1197                         case LyXFont::BOLD_SERIES:
1198                                 tag_close |= BF;
1199                                 break;
1200                         default:
1201                                 break;
1202                         }
1203
1204                         series_type = font.series();
1205
1206                         switch (series_type) {
1207                         case LyXFont::BOLD_SERIES:
1208                                 tag_open.push_back(BF);
1209                                 break;
1210                         default:
1211                                 break;
1212                         }
1213
1214                 }
1215
1216                 if (font_old.shape() != font.shape()) {
1217                         switch (shape_type) {
1218                         case LyXFont::ITALIC_SHAPE:
1219                                 tag_close |= IT;
1220                                 break;
1221                         case LyXFont::SLANTED_SHAPE:
1222                                 tag_close |= SL;
1223                                 break;
1224                         default:
1225                                 break;
1226                         }
1227
1228                         shape_type = font.shape();
1229
1230                         switch (shape_type) {
1231                         case LyXFont::ITALIC_SHAPE:
1232                                 tag_open.push_back(IT);
1233                                 break;
1234                         case LyXFont::SLANTED_SHAPE:
1235                                 tag_open.push_back(SL);
1236                                 break;
1237                         default:
1238                                 break;
1239                         }
1240                 }
1241                 // handle <em> tag
1242                 if (font_old.emph() != font.emph()) {
1243                         if (font.emph() == LyXFont::ON) {
1244                                 tag_open.push_back(EM);
1245                                 is_em = true;
1246                         }
1247                         else if (is_em) {
1248                                 tag_close |= EM;
1249                                 is_em = false;
1250                         }
1251                 }
1252
1253                 list < PAR_TAG > temp;
1254                 while (!tag_state.empty() && tag_close) {
1255                         PAR_TAG k =  tag_state.top();
1256                         tag_state.pop();
1257                         os << "</" << tag_name(k) << '>';
1258                         if (tag_close & k)
1259                                 reset(tag_close,k);
1260                         else
1261                                 temp.push_back(k);
1262                 }
1263
1264                 for(list< PAR_TAG >::const_iterator j = temp.begin();
1265                     j != temp.end(); ++j) {
1266                         tag_state.push(*j);
1267                         os << '<' << tag_name(*j) << '>';
1268                 }
1269
1270                 for(list< PAR_TAG >::const_iterator j = tag_open.begin();
1271                     j != tag_open.end(); ++j) {
1272                         tag_state.push(*j);
1273                         os << '<' << tag_name(*j) << '>';
1274                 }
1275
1276                 char c = getChar(i);
1277
1278
1279                 if (c == Paragraph::META_INSET) {
1280                         getInset(i)->linuxdoc(buf, os, runparams);
1281                         font_old = font;
1282                         continue;
1283                 }
1284
1285                 if (style->latexparam() == "CDATA") {
1286                         // "TeX"-Mode on == > SGML-Mode on.
1287                         if (c != '\0')
1288                                 os << c;
1289                         ++char_line_count;
1290                 } else {
1291                         bool ws;
1292                         string str;
1293                         boost::tie(ws, str) = sgml::escapeChar(c);
1294                         if (ws && !isFreeSpacing()) {
1295                                 // in freespacing mode, spaces are
1296                                 // non-breaking characters
1297                                 if (desc_on) { // if char is ' ' then...
1298                                         ++char_line_count;
1299                                         sgmlLineBreak(os, char_line_count, 6);
1300                                         os << "</tag>";
1301                                         desc_on = false;
1302                                 } else  {
1303                                         sgmlLineBreak(os, char_line_count, 1);
1304                                         os << c;
1305                                 }
1306                         } else {
1307                                 os << str;
1308                                 char_line_count += str.length();
1309                         }
1310                 }
1311                 font_old = font;
1312         }
1313
1314         while (!tag_state.empty()) {
1315                 os << "</" << tag_name(tag_state.top()) << '>';
1316                 tag_state.pop();
1317         }
1318
1319         // resets description flag correctly
1320         if (desc_on) {
1321                 // <tag> not closed...
1322                 sgmlLineBreak(os, char_line_count, 6);
1323                 os << "</tag>";
1324         }
1325 }
1326
1327
1328 void Paragraph::simpleDocBookOnePar(Buffer const & buf,
1329                                     ostream & os,
1330                                     LyXFont const & outerfont,
1331                                     OutputParams const & runparams,
1332                                     lyx::depth_type depth,
1333                                     bool labelid) const
1334 {
1335         bool emph_flag = false;
1336
1337         LyXLayout_ptr const & style = layout();
1338         LyXLayout_ptr const & defaultstyle =
1339                 buf.params().getLyXTextClass().defaultLayout();
1340
1341         LyXFont font_old =
1342                 style->labeltype == LABEL_MANUAL ? style->labelfont : style->font;
1343
1344         int char_line_count = depth;
1345         bool label_closed = true;
1346         bool para_closed = true;
1347
1348         if (style->latextype == LATEX_ITEM_ENVIRONMENT) {
1349                 string ls = "";
1350                 Counters & counters = buf.params().getLyXTextClass().counters();
1351                 if (!style->free_spacing)
1352                         os << string(depth,' ');
1353                 if (!style->labeltag().empty()) {
1354                         os << "<" << style->labeltag() << ">\n";
1355                         label_closed = false;
1356                 } else {
1357                         if (!defaultstyle->latexparam().empty()) {
1358                                 counters.step("para");
1359                                 ls = tostr(counters.value("para"));
1360                                 ls = " id=\""
1361                                         + subst(defaultstyle->latexparam(), "#", ls) + '"';
1362                         }
1363                         os << "<" << style->itemtag() << ">\n"
1364                            << string(depth, ' ') << "<"
1365                            << defaultstyle->latexname() << ls << ">\n";
1366                         para_closed = false;
1367                 }
1368         }
1369
1370         // parsing main loop
1371         for (pos_type i = 0; i < size(); ++i) {
1372                 LyXFont font = getFont(buf.params(), i, outerfont);
1373
1374                 // handle <emphasis> tag
1375                 if (font_old.emph() != font.emph()) {
1376                         if (font.emph() == LyXFont::ON) {
1377                                 if (style->latexparam() == "CDATA")
1378                                         os << "]]>";
1379                                 os << "<emphasis>";
1380                                 if (style->latexparam() == "CDATA")
1381                                         os << "<![CDATA[";
1382                                 emph_flag = true;
1383                         } else if (i) {
1384                                 if (style->latexparam() == "CDATA")
1385                                         os << "]]>";
1386                                 os << "</emphasis>";
1387                                 if (style->latexparam() == "CDATA")
1388                                         os << "<![CDATA[";
1389                                 emph_flag = false;
1390                         }
1391                 }
1392
1393                 if (isInset(i)) {
1394                         InsetBase const * inset = getInset(i);
1395                         // don't print the inset in position 0 if desc_on == 3 (label)
1396                         //if (i || desc_on != 3) {
1397                         if (!labelid) {
1398                                 if (style->latexparam() == "CDATA")
1399                                         os << "]]>";
1400                                 inset->docbook(buf, os, runparams);
1401                                 if (style->latexparam() == "CDATA")
1402                                         os << "<![CDATA[";
1403                         }
1404                 } else {
1405                         char c = getChar(i);
1406                         bool ws;
1407                         string str;
1408                         boost::tie(ws, str) = sgml::escapeChar(c);
1409
1410                         if (style->pass_thru) {
1411                                 os << c;
1412                         } else if (isFreeSpacing() || c != ' ') {
1413                                         os << str;
1414                         } else if (!style->labeltag().empty() && !label_closed) {
1415                                 ++char_line_count;
1416                                 os << "\n</" << style->labeltag() << "><"
1417                                    << style->itemtag() << "><"
1418                                    << defaultstyle->latexname() << ">";
1419                                 label_closed = true;
1420                                 para_closed = false;
1421                         } else {
1422                                 os << ' ';
1423                         }
1424                 }
1425                 font_old = font;
1426         }
1427
1428         if (emph_flag) {
1429                 if (style->latexparam() == "CDATA")
1430                         os << "]]>";
1431                 os << "</emphasis>";
1432                 if (style->latexparam() == "CDATA")
1433                         os << "<![CDATA[";
1434         }
1435
1436         // resets description flag correctly
1437         if (!label_closed) {
1438                 // <term> not closed...
1439                 os << "</" << style->labeltag() << ">\n<"
1440                    << style->itemtag() << "><"
1441                    << defaultstyle->latexname() << ">&nbsp;";
1442         }
1443         if (!para_closed) {
1444                 os << "\n" << string(depth, ' ') << "</"
1445                    << defaultstyle->latexname() << ">\n";
1446         }
1447         if (style->free_spacing)
1448                 os << '\n';
1449 }
1450
1451
1452 namespace {
1453
1454 /// return true if the char is a meta-character for an inset
1455 inline
1456 bool IsInsetChar(char c)
1457 {
1458         return (c == Paragraph::META_INSET);
1459 }
1460
1461 } // namespace anon
1462
1463
1464
1465 bool Paragraph::isHfill(pos_type pos) const
1466 {
1467         return
1468                 isInset(pos) && getInset(pos)->lyxCode() == InsetBase::HFILL_CODE;
1469 }
1470
1471
1472 bool Paragraph::isNewline(pos_type pos) const
1473 {
1474         return
1475                 isInset(pos) && getInset(pos)->lyxCode() == InsetBase::NEWLINE_CODE;
1476 }
1477
1478
1479 bool Paragraph::isSeparator(pos_type pos) const
1480 {
1481         return IsSeparatorChar(getChar(pos));
1482 }
1483
1484
1485 bool Paragraph::isLineSeparator(pos_type pos) const
1486 {
1487         value_type const c = getChar(pos);
1488         return IsLineSeparatorChar(c)
1489                 || (IsInsetChar(c) && getInset(pos) &&
1490                 getInset(pos)->isLineSeparator());
1491 }
1492
1493
1494 bool Paragraph::isKomma(pos_type pos) const
1495 {
1496         return IsKommaChar(getChar(pos));
1497 }
1498
1499
1500 /// Used by the spellchecker
1501 bool Paragraph::isLetter(pos_type pos) const
1502 {
1503         value_type const c = getChar(pos);
1504         if (IsLetterChar(c))
1505                 return true;
1506         if (isInset(pos))
1507                 return getInset(pos)->isLetter();
1508         // We want to pass the ' and escape chars to ispell
1509         string const extra = lyxrc.isp_esc_chars + '\'';
1510         return contains(extra, c);
1511 }
1512
1513
1514 bool Paragraph::isWord(pos_type pos) const
1515 {
1516         unsigned char const c = getChar(pos);
1517         return !(IsSeparatorChar(c)
1518                   || IsKommaChar(c)
1519                   || IsInsetChar(c));
1520 }
1521
1522
1523 Language const *
1524 Paragraph::getParLanguage(BufferParams const & bparams) const
1525 {
1526         if (!empty())
1527                 return getFirstFontSettings().language();
1528 #ifdef WITH_WARNINGS
1529 #warning FIXME we should check the prev par as well (Lgb)
1530 #endif
1531         return bparams.language;
1532 }
1533
1534
1535 bool Paragraph::isRightToLeftPar(BufferParams const & bparams) const
1536 {
1537         return lyxrc.rtl_support
1538                 && getParLanguage(bparams)->RightToLeft()
1539                 && ownerCode() != InsetBase::ERT_CODE;
1540 }
1541
1542
1543 void Paragraph::changeLanguage(BufferParams const & bparams,
1544                                Language const * from, Language const * to)
1545 {
1546         for (pos_type i = 0; i < size(); ++i) {
1547                 LyXFont font = getFontSettings(bparams, i);
1548                 if (font.language() == from) {
1549                         font.setLanguage(to);
1550                         setFont(i, font);
1551                 }
1552         }
1553 }
1554
1555
1556 bool Paragraph::isMultiLingual(BufferParams const & bparams) const
1557 {
1558         Language const * doc_language = bparams.language;
1559         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
1560         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
1561
1562         for (; cit != end; ++cit)
1563                 if (cit->font().language() != ignore_language &&
1564                     cit->font().language() != latex_language &&
1565                     cit->font().language() != doc_language)
1566                         return true;
1567         return false;
1568 }
1569
1570
1571 // Convert the paragraph to a string.
1572 // Used for building the table of contents
1573 string const Paragraph::asString(Buffer const & buffer, bool label) const
1574 {
1575         OutputParams runparams;
1576         return asString(buffer, runparams, label);
1577 }
1578
1579
1580 string const Paragraph::asString(Buffer const & buffer,
1581                                  OutputParams const & runparams,
1582                                  bool label) const
1583 {
1584 #if 0
1585         string s;
1586         if (label && !params().labelString().empty())
1587                 s += params().labelString() + ' ';
1588
1589         for (pos_type i = 0; i < size(); ++i) {
1590                 value_type c = getChar(i);
1591                 if (IsPrintable(c))
1592                         s += c;
1593                 else if (c == META_INSET &&
1594                          getInset(i)->lyxCode() == InsetBase::MATH_CODE) {
1595                         ostringstream os;
1596                         getInset(i)->plaintext(buffer, os, runparams);
1597                         s += subst(STRCONV(os.str()),'\n',' ');
1598                 }
1599         }
1600
1601         return s;
1602 #else
1603         // This should really be done by the caller and not here.
1604         string ret = asString(buffer, runparams, 0, size(), label);
1605         return subst(ret, '\n', ' ');
1606 #endif
1607 }
1608
1609
1610 string const Paragraph::asString(Buffer const & buffer,
1611                                  pos_type beg, pos_type end, bool label) const
1612 {
1613
1614         OutputParams const runparams;
1615         return asString(buffer, runparams, beg, end, label);
1616 }
1617
1618
1619 string const Paragraph::asString(Buffer const & buffer,
1620                                  OutputParams const & runparams,
1621                                  pos_type beg, pos_type end, bool label) const
1622 {
1623         ostringstream os;
1624
1625         if (beg == 0 && label && !params().labelString().empty())
1626                 os << params().labelString() << ' ';
1627
1628         for (pos_type i = beg; i < end; ++i) {
1629                 value_type const c = getUChar(buffer.params(), i);
1630                 if (IsPrintable(c))
1631                         os << c;
1632                 else if (c == META_INSET)
1633                         getInset(i)->plaintext(buffer, os, runparams);
1634         }
1635
1636         return os.str();
1637 }
1638
1639
1640 void Paragraph::setInsetOwner(UpdatableInset * inset)
1641 {
1642         pimpl_->inset_owner = inset;
1643 }
1644
1645
1646 void Paragraph::setContentsFromPar(Paragraph const & par)
1647 {
1648         pimpl_->setContentsFromPar(par);
1649 }
1650
1651
1652 void Paragraph::trackChanges(Change::Type type)
1653 {
1654         pimpl_->trackChanges(type);
1655 }
1656
1657
1658 void Paragraph::untrackChanges()
1659 {
1660         pimpl_->untrackChanges();
1661 }
1662
1663
1664 void Paragraph::cleanChanges()
1665 {
1666         pimpl_->cleanChanges();
1667 }
1668
1669
1670 Change::Type Paragraph::lookupChange(lyx::pos_type pos) const
1671 {
1672         BOOST_ASSERT(empty() || pos < size());
1673         return pimpl_->lookupChange(pos);
1674 }
1675
1676
1677 Change const Paragraph::lookupChangeFull(lyx::pos_type pos) const
1678 {
1679         BOOST_ASSERT(empty() || pos < size());
1680         return pimpl_->lookupChangeFull(pos);
1681 }
1682
1683
1684 bool Paragraph::isChanged(pos_type start, pos_type end) const
1685 {
1686         return pimpl_->isChanged(start, end);
1687 }
1688
1689
1690 bool Paragraph::isChangeEdited(pos_type start, pos_type end) const
1691 {
1692         return pimpl_->isChangeEdited(start, end);
1693 }
1694
1695
1696 void Paragraph::setChange(lyx::pos_type pos, Change::Type type)
1697 {
1698         pimpl_->setChange(pos, type);
1699 }
1700
1701
1702 void Paragraph::markErased()
1703 {
1704         pimpl_->markErased();
1705 }
1706
1707
1708 void Paragraph::acceptChange(pos_type start, pos_type end)
1709 {
1710         return pimpl_->acceptChange(start, end);
1711 }
1712
1713
1714 void Paragraph::rejectChange(pos_type start, pos_type end)
1715 {
1716         return pimpl_->rejectChange(start, end);
1717 }
1718
1719
1720 Paragraph::value_type Paragraph::getChar(pos_type pos) const
1721 {
1722         // This is in the critical path!
1723         pos_type const siz = text_.size();
1724
1725         BOOST_ASSERT(0 <= pos);
1726         BOOST_ASSERT(pos <= siz);
1727
1728         if (pos == siz) {
1729                 lyxerr << "getChar() on pos " << pos << " in par id "
1730                        << id() << " of size " << siz
1731                        << "  is a bit silly !" << endl;
1732                 BOOST_ASSERT(false);
1733         }
1734
1735         return text_[pos];
1736 }
1737
1738
1739 int Paragraph::id() const
1740 {
1741         return pimpl_->id_;
1742 }
1743
1744
1745 LyXLayout_ptr const & Paragraph::layout() const
1746 {
1747         return layout_;
1748 }
1749
1750
1751 void Paragraph::layout(LyXLayout_ptr const & new_layout)
1752 {
1753         layout_ = new_layout;
1754 }
1755
1756
1757 UpdatableInset * Paragraph::inInset() const
1758 {
1759         return pimpl_->inset_owner;
1760 }
1761
1762
1763 InsetBase::Code Paragraph::ownerCode() const
1764 {
1765         return pimpl_->inset_owner
1766                 ? pimpl_->inset_owner->lyxCode() : InsetBase::NO_CODE;
1767 }
1768
1769
1770 void Paragraph::clearContents()
1771 {
1772         text_.clear();
1773 }
1774
1775
1776 void Paragraph::setChar(pos_type pos, value_type c)
1777 {
1778         text_[pos] = c;
1779 }
1780
1781
1782 ParagraphParameters & Paragraph::params()
1783 {
1784         return pimpl_->params;
1785 }
1786
1787
1788 ParagraphParameters const & Paragraph::params() const
1789 {
1790         return pimpl_->params;
1791 }
1792
1793
1794 bool Paragraph::isFreeSpacing() const
1795 {
1796         if (layout()->free_spacing)
1797                 return true;
1798
1799         // for now we just need this, later should we need this in some
1800         // other way we can always add a function to InsetBase too.
1801         return ownerCode() == InsetBase::ERT_CODE;
1802 }
1803
1804
1805 bool Paragraph::allowEmpty() const
1806 {
1807         if (layout()->keepempty)
1808                 return true;
1809         return ownerCode() == InsetBase::ERT_CODE;
1810 }
1811
1812
1813 RowList::iterator Paragraph::getRow(pos_type pos)
1814 {
1815         RowList::iterator rit = rows.end();
1816         RowList::iterator const begin = rows.begin();
1817
1818         for (--rit; rit != begin && rit->pos() > pos; --rit)
1819                 ;
1820
1821         return rit;
1822 }
1823
1824
1825 RowList::const_iterator Paragraph::getRow(pos_type pos) const
1826 {
1827         RowList::const_iterator rit = rows.end();
1828         RowList::const_iterator const begin = rows.begin();
1829
1830         for (--rit; rit != begin && rit->pos() > pos; --rit)
1831                 ;
1832
1833         return rit;
1834 }
1835
1836
1837 size_t Paragraph::row(pos_type pos) const
1838 {
1839         RowList::const_iterator rit = rows.end();
1840         RowList::const_iterator const begin = rows.begin();
1841
1842         for (--rit; rit != begin && rit->pos() > pos; --rit)
1843                 ;
1844
1845         return rit - begin;
1846 }
1847
1848
1849 unsigned char Paragraph::transformChar(unsigned char c, pos_type pos) const
1850 {
1851         if (!Encodings::is_arabic(c))
1852                 if (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 && IsDigit(c))
1853                         return c + (0xb0 - '0');
1854                 else
1855                         return c;
1856
1857         unsigned char const prev_char = pos > 0 ? getChar(pos - 1) : ' ';
1858         unsigned char next_char = ' ';
1859
1860         for (pos_type i = pos + 1, end = size(); i < end; ++i) {
1861                 unsigned char const par_char = getChar(i);
1862                 if (!Encodings::IsComposeChar_arabic(par_char)) {
1863                         next_char = par_char;
1864                         break;
1865                 }
1866         }
1867
1868         if (Encodings::is_arabic(next_char)) {
1869                 if (Encodings::is_arabic(prev_char) &&
1870                         !Encodings::is_arabic_special(prev_char))
1871                         return Encodings::TransformChar(c, Encodings::FORM_MEDIAL);
1872                 else
1873                         return Encodings::TransformChar(c, Encodings::FORM_INITIAL);
1874         } else {
1875                 if (Encodings::is_arabic(prev_char) &&
1876                         !Encodings::is_arabic_special(prev_char))
1877                         return Encodings::TransformChar(c, Encodings::FORM_FINAL);
1878                 else
1879                         return Encodings::TransformChar(c, Encodings::FORM_ISOLATED);
1880         }
1881 }