src/paragraph.C

   1 /**
   2  * \file paragraph.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Asger Alstrup
   7  * \author Lars Gullik Bjønnes
   8  * \author Jean-Marc Lasgouttes
   9  * \author Angus Leeming
  10  * \author John Levon
  11  * \author André Pönitz
  12  * \author Dekel Tsur
  13  * \author Jürgen Vigna
  14  *
  15  * Full author contact details are available in file CREDITS.
  16  */
  17
  18 #include <config.h>
  19
  20 #include "paragraph.h"
  21 #include "paragraph_pimpl.h"
  22
  23 #include "buffer.h"
  24 #include "bufferparams.h"
  25 #include "counters.h"
  26 #include "encoding.h"
  27 #include "debug.h"
  28 #include "gettext.h"
  29 #include "language.h"
  30 #include "LaTeXFeatures.h"
  31 #include "lyxfont.h"
  32 #include "lyxrc.h"
  33 #include "lyxrow.h"
  34 #include "outputparams.h"
  35 #include "paragraph_funcs.h"
  36 #include "ParagraphList_fwd.h"
  37 #include "sgml.h"
  38 #include "texrow.h"
  39 #include "vspace.h"
  40
  41 #include "insets/insetbibitem.h"
  42 #include "insets/insetoptarg.h"
  43
  44 #include "support/lstrings.h"
  45 #include "support/textutils.h"
  46 #include "support/convert.h"
  47 #include "support/unicode.h"
  48
  49 #include <boost/tuple/tuple.hpp>
  50 #include <boost/bind.hpp>
  51
  52 #include <algorithm>
  53 #include <list>
  54 #include <stack>
  55 #include <sstream>
  56
  57
  58 namespace lyx {
  59
  60 using support::subst;
  61
  62 using std::distance;
  63 using std::endl;
  64 using std::list;
  65 using std::stack;
  66 using std::string;
  67 using std::ostream;
  68 using std::ostringstream;
  69
  70
  71 Paragraph::Paragraph()
  72         : begin_of_body_(0), pimpl_(new Paragraph::Pimpl(this))
  73 {
  74         itemdepth = 0;
  75         params().clear();
  76 }
  77
  78
  79 Paragraph::Paragraph(Paragraph const & par)
  80         :       itemdepth(par.itemdepth), insetlist(par.insetlist),
  81                 dim_(par.dim_),
  82                 rows_(par.rows_), rowSignature_(par.rowSignature_),
  83                 layout_(par.layout_),
  84                 text_(par.text_), begin_of_body_(par.begin_of_body_),
  85           pimpl_(new Paragraph::Pimpl(*par.pimpl_, this))
  86 {
  87         //lyxerr << "Paragraph::Paragraph(Paragraph const&)" << endl;
  88         InsetList::iterator it = insetlist.begin();
  89         InsetList::iterator end = insetlist.end();
  90         for (; it != end; ++it)
  91                 it->inset = it->inset->clone().release();
  92 }
  93
  94
  95 Paragraph & Paragraph::operator=(Paragraph const & par)
  96 {
  97         // needed as we will destroy the pimpl_ before copying it
  98         if (&par != this) {
  99                 itemdepth = par.itemdepth;
 100
 101                 insetlist = par.insetlist;
 102                 InsetList::iterator it = insetlist.begin();
 103                 InsetList::iterator end = insetlist.end();
 104                 for (; it != end; ++it)
 105                         it->inset = it->inset->clone().release();
 106
 107                 rows_ = par.rows_;
 108                 dim_ = par.dim_;
 109                 rowSignature_ = par.rowSignature_;
 110                 layout_ = par.layout();
 111                 text_ = par.text_;
 112                 begin_of_body_ = par.begin_of_body_;
 113
 114                 delete pimpl_;
 115                 pimpl_ = new Pimpl(*par.pimpl_, this);
 116         }
 117         return *this;
 118 }
 119
 120
 121 Paragraph::~Paragraph()
 122 {
 123         delete pimpl_;
 124         //
 125         //lyxerr << "Paragraph::paragraph_id = "
 126         //       << Paragraph::paragraph_id << endl;
 127 }
 128
 129
 130 void Paragraph::write(Buffer const & buf, ostream & os,
 131                           BufferParams const & bparams,
 132                           depth_type & dth) const
 133 {
 134         // The beginning or end of a deeper (i.e. nested) area?
 135         if (dth != params().depth()) {
 136                 if (params().depth() > dth) {
 137                         while (params().depth() > dth) {
 138                                 os << "\n\\begin_deeper";
 139                                 ++dth;
 140                         }
 141                 } else {
 142                         while (params().depth() < dth) {
 143                                 os << "\n\\end_deeper";
 144                                 --dth;
 145                         }
 146                 }
 147         }
 148
 149         // First write the layout
 150         os << "\n\\begin_layout " << layout()->name() << '\n';
 151
 152         params().write(os);
 153
 154         LyXFont font1(LyXFont::ALL_INHERIT, bparams.language);
 155
 156         Change running_change = Change(Change::UNCHANGED);
 157         time_type const curtime = current_time();
 158
 159         int column = 0;
 160         for (pos_type i = 0; i <= size(); ++i) {
 161
 162                 Change change = pimpl_->lookupChange(i);
 163                 Changes::lyxMarkChange(os, column, curtime, running_change, change);
 164                 running_change = change;
 165
 166                 if (i == size())
 167                         break;
 168
 169                 // Write font changes
 170                 LyXFont font2 = getFontSettings(bparams, i);
 171                 if (font2 != font1) {
 172                         font2.lyxWriteChanges(font1, os);
 173                         column = 0;
 174                         font1 = font2;
 175                 }
 176
 177                 value_type const c = getChar(i);
 178                 switch (c) {
 179                 case META_INSET:
 180                 {
 181                         InsetBase const * inset = getInset(i);
 182                         if (inset)
 183                                 if (inset->directWrite()) {
 184                                         // international char, let it write
 185                                         // code directly so it's shorter in
 186                                         // the file
 187                                         inset->write(buf, os);
 188                                 } else {
 189                                         if (i)
 190                                                 os << '\n';
 191                                         os << "\\begin_inset ";
 192                                         inset->write(buf, os);
 193                                         os << "\n\\end_inset\n\n";
 194                                         column = 0;
 195                                 }
 196                 }
 197                 break;
 198                 case '\\':
 199                         os << "\n\\backslash\n";
 200                         column = 0;
 201                         break;
 202                 case '.':
 203                         if (i + 1 < size() && getChar(i + 1) == ' ') {
 204                                 os << ".\n";
 205                                 column = 0;
 206                         } else
 207                                 os << '.';
 208                         break;
 209                 default:
 210                         if ((column > 70 && c == ' ')
 211                             || column > 79) {
 212                                 os << '\n';
 213                                 column = 0;
 214                         }
 215                         // this check is to amend a bug. LyX sometimes
 216                         // inserts '\0' this could cause problems.
 217                         if (c != '\0') {
 218                                 std::vector<char> tmp = ucs4_to_utf8(c);
 219                                 tmp.push_back('\0');
 220                                 os << &tmp[0];
 221                         } else
 222                                 lyxerr << "ERROR (Paragraph::writeFile):"
 223                                         " NULL char in structure." << endl;
 224                         ++column;
 225                         break;
 226                 }
 227         }
 228
 229         os << "\n\\end_layout\n";
 230 }
 231
 232
 233 void Paragraph::validate(LaTeXFeatures & features) const
 234 {
 235         pimpl_->validate(features, *layout());
 236 }
 237
 238
 239 bool Paragraph::erase(pos_type pos, bool trackChanges)
 240 {
 241         return pimpl_->erase(pos, trackChanges);
 242 }
 243
 244
 245 int Paragraph::erase(pos_type start, pos_type end, bool trackChanges)
 246 {
 247         return pimpl_->erase(start, end, trackChanges);
 248 }
 249
 250
 251 void Paragraph::insert(pos_type start, string const & str,
 252                        LyXFont const & font, Change const & change)
 253 {
 254         for (size_t i = 0, n = str.size(); i != n ; ++i)
 255                 insertChar(start + i, str[i], font, change);
 256 }
 257
 258
 259 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
 260                            bool trackChanges)
 261 {
 262         pimpl_->insertChar(pos, c, Change(trackChanges ?
 263                            Change::INSERTED : Change::UNCHANGED));
 264 }
 265
 266
 267 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
 268                            LyXFont const & font, bool trackChanges)
 269 {
 270         pimpl_->insertChar(pos, c, Change(trackChanges ?
 271                            Change::INSERTED : Change::UNCHANGED));
 272         setFont(pos, font);
 273 }
 274
 275
 276 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
 277                            LyXFont const & font, Change const & change)
 278 {
 279         pimpl_->insertChar(pos, c, change);
 280         setFont(pos, font);
 281 }
 282
 283
 284 void Paragraph::insertInset(pos_type pos, InsetBase * inset, Change const & change)
 285 {
 286         pimpl_->insertInset(pos, inset, change);
 287 }
 288
 289
 290 void Paragraph::insertInset(pos_type pos, InsetBase * inset,
 291                             LyXFont const & font, Change const & change)
 292 {
 293         pimpl_->insertInset(pos, inset, change);
 294         setFont(pos, font);
 295 }
 296
 297
 298 bool Paragraph::insetAllowed(InsetBase_code code)
 299 {
 300         return !pimpl_->inset_owner || pimpl_->inset_owner->insetAllowed(code);
 301 }
 302
 303
 304 // Gets uninstantiated font setting at position.
 305 LyXFont const Paragraph::getFontSettings(BufferParams const & bparams,
 306                                          pos_type pos) const
 307 {
 308         if (pos > size()) {
 309                 lyxerr << " pos: " << pos << " size: " << size() << endl;
 310                 BOOST_ASSERT(pos <= size());
 311         }
 312
 313         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 314         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
 315         for (; cit != end; ++cit)
 316                 if (cit->pos() >= pos)
 317                         break;
 318
 319         if (cit != end)
 320                 return cit->font();
 321
 322         if (pos == size() && !empty())
 323                 return getFontSettings(bparams, pos - 1);
 324
 325         return LyXFont(LyXFont::ALL_INHERIT, getParLanguage(bparams));
 326 }
 327
 328
 329 FontSpan Paragraph::fontSpan(pos_type pos) const
 330 {
 331         BOOST_ASSERT(pos <= size());
 332         pos_type start = 0;
 333
 334         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 335         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
 336         for (; cit != end; ++cit) {
 337                 if (cit->pos() >= pos) {
 338                         if (pos >= beginOfBody())
 339                                 return FontSpan(std::max(start, beginOfBody()),
 340                                                 cit->pos());
 341                         else
 342                                 return FontSpan(start,
 343                                                 std::min(beginOfBody() - 1,
 344                                                          cit->pos()));
 345                 }
 346                 start = cit->pos() + 1;
 347         }
 348
 349         // This should not happen, but if so, we take no chances.
 350         //lyxerr << "Paragraph::getEndPosOfFontSpan: This should not happen!"
 351         //      << endl;
 352         return FontSpan(pos, pos);
 353 }
 354
 355
 356 // Gets uninstantiated font setting at position 0
 357 LyXFont const Paragraph::getFirstFontSettings(BufferParams const & bparams) const
 358 {
 359         if (!empty() && !pimpl_->fontlist.empty())
 360                 return pimpl_->fontlist[0].font();
 361
 362         return LyXFont(LyXFont::ALL_INHERIT, bparams.language);
 363 }
 364
 365
 366 // Gets the fully instantiated font at a given position in a paragraph
 367 // This is basically the same function as LyXText::GetFont() in text2.C.
 368 // The difference is that this one is used for generating the LaTeX file,
 369 // and thus cosmetic "improvements" are disallowed: This has to deliver
 370 // the true picture of the buffer. (Asger)
 371 LyXFont const Paragraph::getFont(BufferParams const & bparams, pos_type pos,
 372                                  LyXFont const & outerfont) const
 373 {
 374         BOOST_ASSERT(pos >= 0);
 375
 376         LyXLayout_ptr const & lout = layout();
 377
 378         pos_type const body_pos = beginOfBody();
 379
 380         LyXFont layoutfont;
 381         if (pos < body_pos)
 382                 layoutfont = lout->labelfont;
 383         else
 384                 layoutfont = lout->font;
 385
 386         LyXFont font = getFontSettings(bparams, pos);
 387         font.realize(layoutfont);
 388         font.realize(outerfont);
 389         font.realize(bparams.getFont());
 390
 391         return font;
 392 }
 393
 394
 395 LyXFont const Paragraph::getLabelFont
 396         (BufferParams const & bparams, LyXFont const & outerfont) const
 397 {
 398         LyXFont tmpfont = layout()->labelfont;
 399         tmpfont.setLanguage(getParLanguage(bparams));
 400         tmpfont.realize(outerfont);
 401         tmpfont.realize(bparams.getFont());
 402         return tmpfont;
 403 }
 404
 405
 406 LyXFont const Paragraph::getLayoutFont
 407         (BufferParams const & bparams, LyXFont const & outerfont) const
 408 {
 409         LyXFont tmpfont = layout()->font;
 410         tmpfont.setLanguage(getParLanguage(bparams));
 411         tmpfont.realize(outerfont);
 412         tmpfont.realize(bparams.getFont());
 413         return tmpfont;
 414 }
 415
 416
 417 /// Returns the height of the highest font in range
 418 LyXFont_size Paragraph::highestFontInRange
 419         (pos_type startpos, pos_type endpos, LyXFont_size def_size) const
 420 {
 421         if (pimpl_->fontlist.empty())
 422                 return def_size;
 423
 424         Pimpl::FontList::const_iterator end_it = pimpl_->fontlist.begin();
 425         Pimpl::FontList::const_iterator const end = pimpl_->fontlist.end();
 426         for (; end_it != end; ++end_it) {
 427                 if (end_it->pos() >= endpos)
 428                         break;
 429         }
 430
 431         if (end_it != end)
 432                 ++end_it;
 433
 434         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 435         for (; cit != end; ++cit) {
 436                 if (cit->pos() >= startpos)
 437                         break;
 438         }
 439
 440         LyXFont::FONT_SIZE maxsize = LyXFont::SIZE_TINY;
 441         for (; cit != end_it; ++cit) {
 442                 LyXFont::FONT_SIZE size = cit->font().size();
 443                 if (size == LyXFont::INHERIT_SIZE)
 444                         size = def_size;
 445                 if (size > maxsize && size <= LyXFont::SIZE_HUGER)
 446                         maxsize = size;
 447         }
 448         return maxsize;
 449 }
 450
 451
 452 Paragraph::value_type
 453 Paragraph::getUChar(BufferParams const & bparams, pos_type pos) const
 454 {
 455         value_type c = getChar(pos);
 456         if (!lyxrc.rtl_support)
 457                 return c;
 458
 459         value_type uc = c;
 460         switch (c) {
 461         case '(':
 462                 uc = ')';
 463                 break;
 464         case ')':
 465                 uc = '(';
 466                 break;
 467         case '[':
 468                 uc = ']';
 469                 break;
 470         case ']':
 471                 uc = '[';
 472                 break;
 473         case '{':
 474                 uc = '}';
 475                 break;
 476         case '}':
 477                 uc = '{';
 478                 break;
 479         case '<':
 480                 uc = '>';
 481                 break;
 482         case '>':
 483                 uc = '<';
 484                 break;
 485         }
 486         if (uc != c && getFontSettings(bparams, pos).isRightToLeft())
 487                 return uc;
 488         else
 489                 return c;
 490 }
 491
 492
 493 void Paragraph::setFont(pos_type pos, LyXFont const & font)
 494 {
 495         BOOST_ASSERT(pos <= size());
 496
 497         // First, reduce font against layout/label font
 498         // Update: The setCharFont() routine in text2.C already
 499         // reduces font, so we don't need to do that here. (Asger)
 500         // No need to simplify this because it will disappear
 501         // in a new kernel. (Asger)
 502         // Next search font table
 503
 504         Pimpl::FontList::iterator beg = pimpl_->fontlist.begin();
 505         Pimpl::FontList::iterator it = beg;
 506         Pimpl::FontList::iterator endit = pimpl_->fontlist.end();
 507         for (; it != endit; ++it) {
 508                 if (it->pos() >= pos)
 509                         break;
 510         }
 511         size_t const i = distance(beg, it);
 512         bool notfound = (it == endit);
 513
 514         if (!notfound && pimpl_->fontlist[i].font() == font)
 515                 return;
 516
 517         bool begin = pos == 0 || notfound ||
 518                 (i > 0 && pimpl_->fontlist[i - 1].pos() == pos - 1);
 519         // Is position pos is a beginning of a font block?
 520         bool end = !notfound && pimpl_->fontlist[i].pos() == pos;
 521         // Is position pos is the end of a font block?
 522         if (begin && end) { // A single char block
 523                 if (i + 1 < pimpl_->fontlist.size() &&
 524                     pimpl_->fontlist[i + 1].font() == font) {
 525                         // Merge the singleton block with the next block
 526                         pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i);
 527                         if (i > 0 && pimpl_->fontlist[i - 1].font() == font)
 528                                 pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i - 1);
 529                 } else if (i > 0 && pimpl_->fontlist[i - 1].font() == font) {
 530                         // Merge the singleton block with the previous block
 531                         pimpl_->fontlist[i - 1].pos(pos);
 532                         pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i);
 533                 } else
 534                         pimpl_->fontlist[i].font(font);
 535         } else if (begin) {
 536                 if (i > 0 && pimpl_->fontlist[i - 1].font() == font)
 537                         pimpl_->fontlist[i - 1].pos(pos);
 538                 else
 539                         pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i,
 540                                         Pimpl::FontTable(pos, font));
 541         } else if (end) {
 542                 pimpl_->fontlist[i].pos(pos - 1);
 543                 if (!(i + 1 < pimpl_->fontlist.size() &&
 544                       pimpl_->fontlist[i + 1].font() == font))
 545                         pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i + 1,
 546                                         Pimpl::FontTable(pos, font));
 547         } else { // The general case. The block is splitted into 3 blocks
 548                 pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i,
 549                                 Pimpl::FontTable(pos - 1, pimpl_->fontlist[i].font()));
 550                 pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i + 1,
 551                                 Pimpl::FontTable(pos, font));
 552         }
 553 }
 554
 555
 556 void Paragraph::makeSameLayout(Paragraph const & par)
 557 {
 558         layout(par.layout());
 559         // move to pimpl?
 560         params() = par.params();
 561 }
 562
 563
 564 int Paragraph::stripLeadingSpaces()
 565 {
 566         if (isFreeSpacing())
 567                 return 0;
 568
 569         int i = 0;
 570         while (!empty() && (isNewline(0) || isLineSeparator(0))
 571                 && (lookupChange(0).type != Change::DELETED)) {
 572                 erase(0, false); // no change tracking here
 573                 ++i;
 574         }
 575
 576         return i;
 577 }
 578
 579
 580 bool Paragraph::hasSameLayout(Paragraph const & par) const
 581 {
 582         return par.layout() == layout() && params().sameLayout(par.params());
 583 }
 584
 585
 586 depth_type Paragraph::getDepth() const
 587 {
 588         return params().depth();
 589 }
 590
 591
 592 depth_type Paragraph::getMaxDepthAfter() const
 593 {
 594         if (layout()->isEnvironment())
 595                 return params().depth() + 1;
 596         else
 597                 return params().depth();
 598 }
 599
 600
 601 char Paragraph::getAlign() const
 602 {
 603         return params().align();
 604 }
 605
 606
 607 docstring const & Paragraph::getLabelstring() const
 608 {
 609         return params().labelString();
 610 }
 611
 612
 613 // the next two functions are for the manual labels
 614 docstring const Paragraph::getLabelWidthString() const
 615 {
 616         if (!params().labelWidthString().empty())
 617                 return params().labelWidthString();
 618         else
 619                 return _("Senseless with this layout!");
 620 }
 621
 622
 623 void Paragraph::setLabelWidthString(docstring const & s)
 624 {
 625         params().labelWidthString(s);
 626 }
 627
 628
 629 void Paragraph::applyLayout(LyXLayout_ptr const & new_layout)
 630 {
 631         layout(new_layout);
 632         params().labelWidthString(docstring());
 633         params().align(LYX_ALIGN_LAYOUT);
 634         params().spacing(Spacing(Spacing::Default));
 635 }
 636
 637
 638 pos_type Paragraph::beginOfBody() const
 639 {
 640         return begin_of_body_;
 641 }
 642
 643
 644 void Paragraph::setBeginOfBody()
 645 {
 646         if (layout()->labeltype != LABEL_MANUAL) {
 647                 begin_of_body_ = 0;
 648                 return;
 649         }
 650
 651         // Unroll the first two cycles of the loop
 652         // and remember the previous character to
 653         // remove unnecessary getChar() calls
 654         pos_type i = 0;
 655         pos_type end = size();
 656         if (i < end && !isNewline(i)) {
 657                 ++i;
 658                 char previous_char = 0;
 659                 char temp = 0;
 660                 if (i < end) {
 661                         previous_char = text_[i];
 662                         if (!isNewline(i)) {
 663                                 ++i;
 664                                 while (i < end && previous_char != ' ') {
 665                                         temp = text_[i];
 666                                         if (isNewline(i))
 667                                                 break;
 668                                         ++i;
 669                                         previous_char = temp;
 670                                 }
 671                         }
 672                 }
 673         }
 674
 675         begin_of_body_ = i;
 676 }
 677
 678
 679 // returns -1 if inset not found
 680 int Paragraph::getPositionOfInset(InsetBase const * inset) const
 681 {
 682         // Find the entry.
 683         InsetList::const_iterator it = insetlist.begin();
 684         InsetList::const_iterator end = insetlist.end();
 685         for (; it != end; ++it)
 686                 if (it->inset == inset)
 687                         return it->pos;
 688         return -1;
 689 }
 690
 691
 692 InsetBibitem * Paragraph::bibitem() const
 693 {
 694         if (!insetlist.empty()) {
 695                 InsetBase * inset = insetlist.begin()->inset;
 696                 if (inset->lyxCode() == InsetBase::BIBITEM_CODE)
 697                         return static_cast<InsetBibitem *>(inset);
 698         }
 699         return 0;
 700 }
 701
 702
 703 bool Paragraph::forceDefaultParagraphs() const
 704 {
 705         return inInset() && inInset()->forceDefaultParagraphs(0);
 706 }
 707
 708
 709 namespace {
 710
 711 // paragraphs inside floats need different alignment tags to avoid
 712 // unwanted space
 713
 714 bool noTrivlistCentering(InsetBase::Code code)
 715 {
 716         return code == InsetBase::FLOAT_CODE || code == InsetBase::WRAP_CODE;
 717 }
 718
 719
 720 string correction(string const & orig)
 721 {
 722         if (orig == "flushleft")
 723                 return "raggedright";
 724         if (orig == "flushright")
 725                 return "raggedleft";
 726         if (orig == "center")
 727                 return "centering";
 728         return orig;
 729 }
 730
 731
 732 string const corrected_env(string const & suffix, string const & env,
 733         InsetBase::Code code)
 734 {
 735         string output = suffix + "{";
 736         if (noTrivlistCentering(code))
 737                 output += correction(env);
 738         else
 739                 output += env;
 740         return output + "}";
 741 }
 742
 743 } // namespace anon
 744
 745
 746 // This could go to ParagraphParameters if we want to
 747 int Paragraph::startTeXParParams(BufferParams const & bparams,
 748                                  odocstream & os, bool moving_arg) const
 749 {
 750         int column = 0;
 751
 752         if (params().noindent()) {
 753                 os << "\\noindent ";
 754                 column += 10;
 755         }
 756
 757         switch (params().align()) {
 758         case LYX_ALIGN_NONE:
 759         case LYX_ALIGN_BLOCK:
 760         case LYX_ALIGN_LAYOUT:
 761         case LYX_ALIGN_SPECIAL:
 762                 break;
 763         case LYX_ALIGN_LEFT:
 764         case LYX_ALIGN_RIGHT:
 765         case LYX_ALIGN_CENTER:
 766                 if (moving_arg) {
 767                         os << "\\protect";
 768                         column += 8;
 769                 }
 770                 break;
 771         }
 772
 773         switch (params().align()) {
 774         case LYX_ALIGN_NONE:
 775         case LYX_ALIGN_BLOCK:
 776         case LYX_ALIGN_LAYOUT:
 777         case LYX_ALIGN_SPECIAL:
 778                 break;
 779         case LYX_ALIGN_LEFT: {
 780                 string output;
 781                 if (getParLanguage(bparams)->babel() != "hebrew")
 782                         output = corrected_env("\\begin", "flushleft", ownerCode());
 783                 else
 784                         output = corrected_env("\\begin", "flushright", ownerCode());
 785                 os << from_ascii(output);
 786                 column += output.size();
 787                 break;
 788         } case LYX_ALIGN_RIGHT: {
 789                 string output;
 790                 if (getParLanguage(bparams)->babel() != "hebrew")
 791                         output = corrected_env("\\begin", "flushright", ownerCode());
 792                 else
 793                         output = corrected_env("\\begin", "flushleft", ownerCode());
 794                 os << from_ascii(output);
 795                 column += output.size();
 796                 break;
 797         } case LYX_ALIGN_CENTER: {
 798                 string output;
 799                 output = corrected_env("\\begin", "center", ownerCode());
 800                 os << from_ascii(output);
 801                 column += output.size();
 802                 break;
 803         }
 804         }
 805
 806         return column;
 807 }
 808
 809
 810 // This could go to ParagraphParameters if we want to
 811 int Paragraph::endTeXParParams(BufferParams const & bparams,
 812                                odocstream & os, bool moving_arg) const
 813 {
 814         int column = 0;
 815
 816         switch (params().align()) {
 817         case LYX_ALIGN_NONE:
 818         case LYX_ALIGN_BLOCK:
 819         case LYX_ALIGN_LAYOUT:
 820         case LYX_ALIGN_SPECIAL:
 821                 break;
 822         case LYX_ALIGN_LEFT:
 823         case LYX_ALIGN_RIGHT:
 824         case LYX_ALIGN_CENTER:
 825                 if (moving_arg) {
 826                         os << "\\protect";
 827                         column = 8;
 828                 }
 829                 break;
 830         }
 831
 832         switch (params().align()) {
 833         case LYX_ALIGN_NONE:
 834         case LYX_ALIGN_BLOCK:
 835         case LYX_ALIGN_LAYOUT:
 836         case LYX_ALIGN_SPECIAL:
 837                 break;
 838         case LYX_ALIGN_LEFT: {
 839                 string output;
 840                 if (getParLanguage(bparams)->babel() != "hebrew")
 841                         output = corrected_env("\\par\\end", "flushleft", ownerCode());
 842                 else
 843                         output = corrected_env("\\par\\end", "flushright", ownerCode());
 844                 os << from_ascii(output);
 845                 column += output.size();
 846                 break;
 847         } case LYX_ALIGN_RIGHT: {
 848                 string output;
 849                 if (getParLanguage(bparams)->babel() != "hebrew")
 850                         output = corrected_env("\\par\\end", "flushright", ownerCode());
 851                 else
 852                         output = corrected_env("\\par\\end", "flushleft", ownerCode());
 853                 os << from_ascii(output);
 854                 column += output.size();
 855                 break;
 856         } case LYX_ALIGN_CENTER: {
 857                 string output;
 858                 output = corrected_env("\\par\\end", "center", ownerCode());
 859                 os << from_ascii(output);
 860                 column += output.size();
 861                 break;
 862         }
 863         }
 864
 865         return column;
 866 }
 867
 868
 869 // This one spits out the text of the paragraph
 870 bool Paragraph::simpleTeXOnePar(Buffer const & buf,
 871                                 BufferParams const & bparams,
 872                                 LyXFont const & outerfont,
 873                                 odocstream & os, TexRow & texrow,
 874                                 OutputParams const & runparams) const
 875 {
 876         lyxerr[Debug::LATEX] << "SimpleTeXOnePar...     " << this << endl;
 877
 878         bool return_value = false;
 879
 880         LyXLayout_ptr style;
 881
 882         // well we have to check if we are in an inset with unlimited
 883         // length (all in one row) if that is true then we don't allow
 884         // any special options in the paragraph and also we don't allow
 885         // any environment other then "Standard" to be valid!
 886         bool asdefault = forceDefaultParagraphs();
 887
 888         if (asdefault) {
 889                 style = bparams.getLyXTextClass().defaultLayout();
 890         } else {
 891                 style = layout();
 892         }
 893
 894         LyXFont basefont;
 895
 896         LaTeXFeatures features(buf, bparams, runparams);
 897
 898         // output change tracking marks only if desired,
 899         // if dvipost is installed,
 900         // and with dvi/ps (other formats don't work)
 901         bool const output = bparams.outputChanges
 902                 && runparams.flavor == OutputParams::LATEX
 903                 && features.isAvailable("dvipost");
 904
 905         // Maybe we have to create a optional argument.
 906         pos_type body_pos = beginOfBody();
 907         unsigned int column = 0;
 908
 909         if (body_pos > 0) {
 910                 // the optional argument is kept in curly brackets in
 911                 // case it contains a ']'
 912                 os << "[{";
 913                 column += 2;
 914                 basefont = getLabelFont(bparams, outerfont);
 915         } else {
 916                 basefont = getLayoutFont(bparams, outerfont);
 917         }
 918
 919         // Which font is currently active?
 920         LyXFont running_font(basefont);
 921         // Do we have an open font change?
 922         bool open_font = false;
 923
 924         Change::Type running_change = Change::UNCHANGED;
 925
 926         texrow.start(id(), 0);
 927
 928         // if the paragraph is empty, the loop will not be entered at all
 929         if (empty()) {
 930                 if (style->isCommand()) {
 931                         os << '{';
 932                         ++column;
 933                 }
 934                 if (!asdefault)
 935                         column += startTeXParParams(bparams, os,
 936                                                     runparams.moving_arg);
 937         }
 938
 939         for (pos_type i = 0; i < size(); ++i) {
 940                 ++column;
 941                 // First char in paragraph or after label?
 942                 if (i == body_pos) {
 943                         if (body_pos > 0) {
 944                                 if (open_font) {
 945                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
 946                                         open_font = false;
 947                                 }
 948                                 basefont = getLayoutFont(bparams, outerfont);
 949                                 running_font = basefont;
 950                                 os << "}] ";
 951                                 column +=3;
 952                         }
 953                         if (style->isCommand()) {
 954                                 os << '{';
 955                                 ++column;
 956                         }
 957
 958                         if (!asdefault)
 959                                 column += startTeXParParams(bparams, os,
 960                                                             runparams.moving_arg);
 961                 }
 962
 963                 value_type c = getChar(i);
 964
 965                 // Fully instantiated font
 966                 LyXFont font = getFont(bparams, i, outerfont);
 967
 968                 LyXFont const last_font = running_font;
 969
 970                 // Spaces at end of font change are simulated to be
 971                 // outside font change, i.e. we write "\textXX{text} "
 972                 // rather than "\textXX{text }". (Asger)
 973                 if (open_font && c == ' ' && i <= size() - 2) {
 974                         LyXFont const & next_font = getFont(bparams, i + 1, outerfont);
 975                         if (next_font != running_font && next_font != font) {
 976                                 font = next_font;
 977                         }
 978                 }
 979
 980                 // We end font definition before blanks
 981                 if (open_font &&
 982                     (font != running_font ||
 983                      font.language() != running_font.language()))
 984                 {
 985                         column += running_font.latexWriteEndChanges(os,
 986                                                                     basefont,
 987                                                                     (i == body_pos-1) ? basefont : font);
 988                         running_font = basefont;
 989                         open_font = false;
 990                 }
 991
 992                 // Blanks are printed before start of fontswitch
 993                 if (c == ' ') {
 994                         // Do not print the separation of the optional argument
 995                         if (i != body_pos - 1) {
 996                                 pimpl_->simpleTeXBlanks(os, texrow, i,
 997                                                        column, font, *style);
 998                         }
 999                 }
1000
1001                 // Do we need to change font?
1002                 if ((font != running_font ||
1003                      font.language() != running_font.language()) &&
1004                         i != body_pos - 1)
1005                 {
1006                         column += font.latexWriteStartChanges(os, basefont,
1007                                                               last_font);
1008                         running_font = font;
1009                         open_font = true;
1010                 }
1011
1012                 Change::Type change = pimpl_->lookupChange(i).type;
1013
1014                 column += Changes::latexMarkChange(os, running_change,
1015                         change, output);
1016                 running_change = change;
1017
1018                 // do not output text which is marked deleted
1019                 // if change tracking output is not desired
1020                 if (output || running_change != Change::DELETED) {
1021                         OutputParams rp = runparams;
1022                         rp.free_spacing = style->free_spacing;
1023                         rp.local_font = &font;
1024                         rp.intitle = style->intitle;
1025                         pimpl_->simpleTeXSpecialChars(buf, bparams,
1026                                                 os, texrow, rp,
1027                                                 font, running_font,
1028                                                 basefont, outerfont, open_font,
1029                                                 running_change,
1030                                                 *style, i, column, c);
1031                 }
1032         }
1033
1034         column += Changes::latexMarkChange(os,
1035                         running_change, Change::UNCHANGED, output);
1036
1037         // If we have an open font definition, we have to close it
1038         if (open_font) {
1039 #ifdef FIXED_LANGUAGE_END_DETECTION
1040                 if (next_) {
1041                         running_font
1042                                 .latexWriteEndChanges(os, basefont,
1043                                                       next_->getFont(bparams,
1044                                                       0, outerfont));
1045                 } else {
1046                         running_font.latexWriteEndChanges(os, basefont,
1047                                                           basefont);
1048                 }
1049 #else
1050 #ifdef WITH_WARNINGS
1051 //#warning For now we ALWAYS have to close the foreign font settings if they are
1052 //#warning there as we start another \selectlanguage with the next paragraph if
1053 //#warning we are in need of this. This should be fixed sometime (Jug)
1054 #endif
1055                 running_font.latexWriteEndChanges(os, basefont,  basefont);
1056 #endif
1057         }
1058
1059         // Needed if there is an optional argument but no contents.
1060         if (body_pos > 0 && body_pos == size()) {
1061                 os << "}]~";
1062                 return_value = false;
1063         }
1064
1065         if (!asdefault) {
1066                 column += endTeXParParams(bparams, os, runparams.moving_arg);
1067         }
1068
1069         lyxerr[Debug::LATEX] << "SimpleTeXOnePar...done " << this << endl;
1070         return return_value;
1071 }
1072
1073
1074 namespace {
1075
1076 // checks, if newcol chars should be put into this line
1077 // writes newline, if necessary.
1078 void sgmlLineBreak(ostream & os, string::size_type & colcount,
1079                           string::size_type newcol)
1080 {
1081         colcount += newcol;
1082         if (colcount > lyxrc.ascii_linelen) {
1083                 os << "\n";
1084                 colcount = newcol; // assume write after this call
1085         }
1086 }
1087
1088 enum PAR_TAG {
1089         PAR_NONE=0,
1090         TT = 1,
1091         SF = 2,
1092         BF = 4,
1093         IT = 8,
1094         SL = 16,
1095         EM = 32
1096 };
1097
1098
1099 string tag_name(PAR_TAG const & pt) {
1100         switch (pt) {
1101         case PAR_NONE: return "!-- --";
1102         case TT: return "tt";
1103         case SF: return "sf";
1104         case BF: return "bf";
1105         case IT: return "it";
1106         case SL: return "sl";
1107         case EM: return "em";
1108         }
1109         return "";
1110 }
1111
1112
1113 inline
1114 void operator|=(PAR_TAG & p1, PAR_TAG const & p2)
1115 {
1116         p1 = static_cast<PAR_TAG>(p1 | p2);
1117 }
1118
1119
1120 inline
1121 void reset(PAR_TAG & p1, PAR_TAG const & p2)
1122 {
1123         p1 = static_cast<PAR_TAG>(p1 & ~p2);
1124 }
1125
1126 } // anon
1127
1128
1129 bool Paragraph::emptyTag() const
1130 {
1131         for (pos_type i = 0; i < size(); ++i) {
1132                 if (isInset(i)) {
1133                         InsetBase const * inset = getInset(i);
1134                         InsetBase::Code lyx_code = inset->lyxCode();
1135                         if (lyx_code != InsetBase::TOC_CODE &&
1136                             lyx_code != InsetBase::INCLUDE_CODE &&
1137                             lyx_code != InsetBase::GRAPHICS_CODE &&
1138                             lyx_code != InsetBase::ERT_CODE &&
1139                             lyx_code != InsetBase::FLOAT_CODE &&
1140                             lyx_code != InsetBase::TABULAR_CODE) {
1141                                 return false;
1142                         }
1143                 } else {
1144                         value_type c = getChar(i);
1145                         if (c != ' ' && c != '\t')
1146                                 return false;
1147                 }
1148         }
1149         return true;
1150 }
1151
1152
1153 string Paragraph::getID(Buffer const & buf, OutputParams const & runparams) const
1154 {
1155         for (pos_type i = 0; i < size(); ++i) {
1156                 if (isInset(i)) {
1157                         InsetBase const * inset = getInset(i);
1158                         InsetBase::Code lyx_code = inset->lyxCode();
1159                         if (lyx_code == InsetBase::LABEL_CODE) {
1160                                 string const id = static_cast<InsetCommand const *>(inset)->getContents();
1161                                 return "id=\"" + sgml::cleanID(buf, runparams, id) + "\"";
1162                         }
1163                 }
1164
1165         }
1166         return string();
1167 }
1168
1169
1170 pos_type Paragraph::getFirstWord(Buffer const & buf, odocstream & os, OutputParams const & runparams) const
1171 {
1172         pos_type i;
1173         for (i = 0; i < size(); ++i) {
1174                 if (isInset(i)) {
1175                         InsetBase const * inset = getInset(i);
1176                         inset->docbook(buf, os, runparams);
1177                 } else {
1178                         value_type c = getChar(i);
1179                         if (c == ' ')
1180                                 break;
1181                         bool ws;
1182                         string str;
1183                         // FIXME UNICODE
1184                         // sgml::escapeChar takes a char, not lyx::char_type
1185                         boost::tie(ws, str) = sgml::escapeChar(c);
1186                         // FIXME UNICODE
1187                         os << from_ascii(str);
1188                 }
1189         }
1190         return i;
1191 }
1192
1193
1194 bool Paragraph::onlyText(Buffer const & buf, LyXFont const & outerfont, pos_type initial) const
1195 {
1196         LyXFont font_old;
1197
1198         for (pos_type i = initial; i < size(); ++i) {
1199                 LyXFont font = getFont(buf.params(), i, outerfont);
1200                 if (isInset(i))
1201                         return false;
1202                 if (i != initial && font != font_old)
1203                         return false;
1204                 font_old = font;
1205         }
1206
1207         return true;
1208 }
1209
1210
1211 void Paragraph::simpleDocBookOnePar(Buffer const & buf,
1212                                     odocstream & os,
1213                                     OutputParams const & runparams,
1214                                     LyXFont const & outerfont,
1215                                     pos_type initial) const
1216 {
1217         bool emph_flag = false;
1218
1219         LyXLayout_ptr const & style = layout();
1220         LyXFont font_old =
1221                 style->labeltype == LABEL_MANUAL ? style->labelfont : style->font;
1222
1223         if (style->pass_thru && !onlyText(buf, outerfont, initial))
1224                 os << "]]>";
1225
1226         // parsing main loop
1227         for (pos_type i = initial; i < size(); ++i) {
1228                 LyXFont font = getFont(buf.params(), i, outerfont);
1229
1230                 // handle <emphasis> tag
1231                 if (font_old.emph() != font.emph()) {
1232                         if (font.emph() == LyXFont::ON) {
1233                                 os << "<emphasis>";
1234                                 emph_flag = true;
1235                         } else if (i != initial) {
1236                                 os << "</emphasis>";
1237                                 emph_flag = false;
1238                         }
1239                 }
1240
1241                 if (isInset(i)) {
1242                         InsetBase const * inset = getInset(i);
1243                         inset->docbook(buf, os, runparams);
1244                 } else {
1245                         value_type c = getChar(i);
1246                         bool ws;
1247                         string str;
1248                         // FIXME UNICODE
1249                         // sgml::escapeChar takes a char, not lyx::char_type
1250                         boost::tie(ws, str) = sgml::escapeChar(c);
1251
1252                         if (style->pass_thru)
1253                                 os.put(c);
1254                         else
1255                                 // FIXME UNICODE
1256                                 os << from_ascii(str);
1257                 }
1258                 font_old = font;
1259         }
1260
1261         if (emph_flag) {
1262                 os << "</emphasis>";
1263         }
1264
1265         if (style->free_spacing)
1266                 os << '\n';
1267         if (style->pass_thru && !onlyText(buf, outerfont, initial))
1268                 os << "<![CDATA[";
1269 }
1270
1271
1272 bool Paragraph::isNewline(pos_type pos) const
1273 {
1274         return isInset(pos)
1275                 && getInset(pos)->lyxCode() == InsetBase::NEWLINE_CODE;
1276 }
1277
1278
1279 bool Paragraph::isLineSeparator(pos_type pos) const
1280 {
1281         value_type const c = getChar(pos);
1282         return isLineSeparatorChar(c)
1283                 || (c == Paragraph::META_INSET && getInset(pos) &&
1284                 getInset(pos)->isLineSeparator());
1285 }
1286
1287
1288 /// Used by the spellchecker
1289 bool Paragraph::isLetter(pos_type pos) const
1290 {
1291         if (isInset(pos))
1292                 return getInset(pos)->isLetter();
1293         else {
1294                 value_type const c = getChar(pos);
1295                 return isLetterChar(c) || isDigit(c);
1296         }
1297 }
1298
1299
1300 Language const *
1301 Paragraph::getParLanguage(BufferParams const & bparams) const
1302 {
1303         if (!empty())
1304                 return getFirstFontSettings(bparams).language();
1305 #ifdef WITH_WARNINGS
1306 #warning FIXME we should check the prev par as well (Lgb)
1307 #endif
1308         return bparams.language;
1309 }
1310
1311
1312 bool Paragraph::isRightToLeftPar(BufferParams const & bparams) const
1313 {
1314         return lyxrc.rtl_support
1315                 && getParLanguage(bparams)->rightToLeft()
1316                 && ownerCode() != InsetBase::ERT_CODE;
1317 }
1318
1319
1320 void Paragraph::changeLanguage(BufferParams const & bparams,
1321                                Language const * from, Language const * to)
1322 {
1323         for (pos_type i = 0; i < size(); ++i) {
1324                 LyXFont font = getFontSettings(bparams, i);
1325                 if (font.language() == from) {
1326                         font.setLanguage(to);
1327                         setFont(i, font);
1328                 }
1329         }
1330 }
1331
1332
1333 bool Paragraph::isMultiLingual(BufferParams const & bparams) const
1334 {
1335         Language const * doc_language = bparams.language;
1336         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
1337         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
1338
1339         for (; cit != end; ++cit)
1340                 if (cit->font().language() != ignore_language &&
1341                     cit->font().language() != latex_language &&
1342                     cit->font().language() != doc_language)
1343                         return true;
1344         return false;
1345 }
1346
1347
1348 // Convert the paragraph to a string.
1349 // Used for building the table of contents
1350 docstring const Paragraph::asString(Buffer const & buffer, bool label) const
1351 {
1352         OutputParams runparams;
1353         return asString(buffer, runparams, label);
1354 }
1355
1356
1357 docstring const Paragraph::asString(Buffer const & buffer,
1358                                  OutputParams const & runparams,
1359                                  bool label) const
1360 {
1361 #if 0
1362         string s;
1363         if (label && !params().labelString().empty())
1364                 s += params().labelString() + ' ';
1365
1366         for (pos_type i = 0; i < size(); ++i) {
1367                 value_type c = getChar(i);
1368                 if (isPrintable(c))
1369                         s += c;
1370                 else if (c == META_INSET &&
1371                          getInset(i)->lyxCode() == InsetBase::MATH_CODE) {
1372                         ostringstream os;
1373                         getInset(i)->plaintext(buffer, os, runparams);
1374                         s += subst(STRCONV(os.str()),'\n',' ');
1375                 }
1376         }
1377
1378         return s;
1379 #else
1380         // This should really be done by the caller and not here.
1381         docstring ret = asString(buffer, runparams, 0, size(), label);
1382         return subst(ret, '\n', ' ');
1383 #endif
1384 }
1385
1386
1387 docstring const Paragraph::asString(Buffer const & buffer,
1388                                  pos_type beg, pos_type end, bool label) const
1389 {
1390
1391         OutputParams const runparams;
1392         return asString(buffer, runparams, beg, end, label);
1393 }
1394
1395
1396 docstring const Paragraph::asString(Buffer const & buffer,
1397                                  OutputParams const & runparams,
1398                                  pos_type beg, pos_type end, bool label) const
1399 {
1400         lyx::odocstringstream os;
1401
1402         if (beg == 0 && label && !params().labelString().empty())
1403                 os << params().labelString() << ' ';
1404
1405         for (pos_type i = beg; i < end; ++i) {
1406                 value_type const c = getUChar(buffer.params(), i);
1407                 // FIXME: isPrintable does not work for lyx::char_type
1408                 if (isPrintable(c))
1409                         os.put(c);
1410                 else if (c == META_INSET)
1411                         getInset(i)->textString(buffer, os, runparams);
1412         }
1413
1414         return os.str();
1415 }
1416
1417
1418 void Paragraph::setInsetOwner(InsetBase * inset)
1419 {
1420         pimpl_->inset_owner = inset;
1421 }
1422
1423
1424 void Paragraph::setContentsFromPar(Paragraph const & par)
1425 {
1426         pimpl_->setContentsFromPar(par);
1427 }
1428
1429
1430 Change const Paragraph::lookupChange(pos_type pos) const
1431 {
1432         BOOST_ASSERT(pos <= size());
1433         return pimpl_->lookupChange(pos);
1434 }
1435
1436
1437 bool Paragraph::isChanged(pos_type start, pos_type end) const
1438 {
1439         return pimpl_->isChanged(start, end);
1440 }
1441
1442
1443 void Paragraph::setChange(Change const & change)
1444 {
1445         pimpl_->setChange(change);
1446 }
1447
1448
1449 void Paragraph::setChange(pos_type pos, Change const & change)
1450 {
1451         pimpl_->setChange(pos, change);
1452 }
1453
1454
1455 void Paragraph::acceptChange(pos_type start, pos_type end)
1456 {
1457         return pimpl_->acceptChange(start, end);
1458 }
1459
1460
1461 void Paragraph::rejectChange(pos_type start, pos_type end)
1462 {
1463         return pimpl_->rejectChange(start, end);
1464 }
1465
1466
1467 int Paragraph::id() const
1468 {
1469         return pimpl_->id_;
1470 }
1471
1472
1473 LyXLayout_ptr const & Paragraph::layout() const
1474 {
1475         return layout_;
1476 }
1477
1478
1479 void Paragraph::layout(LyXLayout_ptr const & new_layout)
1480 {
1481         layout_ = new_layout;
1482 }
1483
1484
1485 InsetBase * Paragraph::inInset() const
1486 {
1487         return pimpl_->inset_owner;
1488 }
1489
1490
1491 InsetBase::Code Paragraph::ownerCode() const
1492 {
1493         return pimpl_->inset_owner
1494                 ? pimpl_->inset_owner->lyxCode() : InsetBase::NO_CODE;
1495 }
1496
1497
1498 void Paragraph::clearContents()
1499 {
1500         text_.clear();
1501 }
1502
1503
1504 void Paragraph::setChar(pos_type pos, value_type c)
1505 {
1506         text_[pos] = c;
1507 }
1508
1509
1510 ParagraphParameters & Paragraph::params()
1511 {
1512         return pimpl_->params;
1513 }
1514
1515
1516 ParagraphParameters const & Paragraph::params() const
1517 {
1518         return pimpl_->params;
1519 }
1520
1521
1522 bool Paragraph::isFreeSpacing() const
1523 {
1524         if (layout()->free_spacing)
1525                 return true;
1526
1527         // for now we just need this, later should we need this in some
1528         // other way we can always add a function to InsetBase too.
1529         return ownerCode() == InsetBase::ERT_CODE;
1530 }
1531
1532
1533 bool Paragraph::allowEmpty() const
1534 {
1535         if (layout()->keepempty)
1536                 return true;
1537         return ownerCode() == InsetBase::ERT_CODE;
1538 }
1539
1540
1541 Row & Paragraph::getRow(pos_type pos, bool boundary)
1542 {
1543         BOOST_ASSERT(!rows().empty());
1544
1545         // If boundary is set we should return the row on which
1546         // the character before is inside.
1547         if (pos > 0 && boundary)
1548                 --pos;
1549
1550         RowList::iterator rit = rows_.end();
1551         RowList::iterator const begin = rows_.begin();
1552
1553         for (--rit; rit != begin && rit->pos() > pos; --rit)
1554                 ;
1555
1556         return *rit;
1557 }
1558
1559
1560 Row const & Paragraph::getRow(pos_type pos, bool boundary) const
1561 {
1562         BOOST_ASSERT(!rows().empty());
1563
1564         // If boundary is set we should return the row on which
1565         // the character before is inside.
1566         if (pos > 0 && boundary)
1567                 --pos;
1568
1569         RowList::const_iterator rit = rows_.end();
1570         RowList::const_iterator const begin = rows_.begin();
1571
1572         for (--rit; rit != begin && rit->pos() > pos; --rit)
1573                 ;
1574
1575         return *rit;
1576 }
1577
1578
1579 size_t Paragraph::pos2row(pos_type pos) const
1580 {
1581         BOOST_ASSERT(!rows().empty());
1582
1583         RowList::const_iterator rit = rows_.end();
1584         RowList::const_iterator const begin = rows_.begin();
1585
1586         for (--rit; rit != begin && rit->pos() > pos; --rit)
1587                 ;
1588
1589         return rit - begin;
1590 }
1591
1592
1593 char_type Paragraph::transformChar(char_type c, pos_type pos) const
1594 {
1595         if (!Encodings::is_arabic(c))
1596                 if (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 && isDigit(c))
1597                         return c + (0xb0 - '0');
1598                 else
1599                         return c;
1600
1601         value_type const prev_char = pos > 0 ? getChar(pos - 1) : ' ';
1602         value_type next_char = ' ';
1603
1604         for (pos_type i = pos + 1, end = size(); i < end; ++i) {
1605                 value_type const par_char = getChar(i);
1606                 if (!Encodings::isComposeChar_arabic(par_char)) {
1607                         next_char = par_char;
1608                         break;
1609                 }
1610         }
1611
1612         if (Encodings::is_arabic(next_char)) {
1613                 if (Encodings::is_arabic(prev_char) &&
1614                         !Encodings::is_arabic_special(prev_char))
1615                         return Encodings::transformChar(c, Encodings::FORM_MEDIAL);
1616                 else
1617                         return Encodings::transformChar(c, Encodings::FORM_INITIAL);
1618         } else {
1619                 if (Encodings::is_arabic(prev_char) &&
1620                         !Encodings::is_arabic_special(prev_char))
1621                         return Encodings::transformChar(c, Encodings::FORM_FINAL);
1622                 else
1623                         return Encodings::transformChar(c, Encodings::FORM_ISOLATED);
1624         }
1625 }
1626
1627
1628 void Paragraph::dump() const
1629 {
1630         lyxerr << "Paragraph::dump: rows.size(): " << rows_.size() << endl;
1631         for (size_t i = 0; i != rows_.size(); ++i) {
1632                 lyxerr << "  row " << i << ":   ";
1633                 rows_[i].dump();
1634         }
1635 }
1636
1637
1638 } // namespace lyx