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