src/paragraph.C

   1 /**
   2  * \file paragraph.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Asger Alstrup
   7  * \author Lars Gullik Bjønnes
   8  * \author Jean-Marc Lasgouttes
   9  * \author Angus Leeming
  10  * \author John Levon
  11  * \author André Pönitz
  12  * \author Dekel Tsur
  13  * \author Jürgen Vigna
  14  *
  15  * Full author contact details are available in file CREDITS.
  16  */
  17
  18 #include <config.h>
  19
  20 #include "paragraph.h"
  21 #include "paragraph_pimpl.h"
  22
  23 #include "buffer.h"
  24 #include "bufferparams.h"
  25 #include "counters.h"
  26 #include "encoding.h"
  27 #include "debug.h"
  28 #include "gettext.h"
  29 #include "language.h"
  30 #include "LaTeXFeatures.h"
  31 #include "lyxfont.h"
  32 #include "lyxrc.h"
  33 #include "lyxrow.h"
  34 #include "outputparams.h"
  35 #include "paragraph_funcs.h"
  36 #include "ParagraphList_fwd.h"
  37 #include "sgml.h"
  38 #include "texrow.h"
  39 #include "vspace.h"
  40
  41 #include "insets/insetbibitem.h"
  42 #include "insets/insetoptarg.h"
  43
  44 #include "support/lstrings.h"
  45 #include "support/textutils.h"
  46 #include "support/convert.h"
  47
  48 #include <boost/tuple/tuple.hpp>
  49 #include <boost/bind.hpp>
  50
  51 #include <algorithm>
  52 #include <list>
  53 #include <stack>
  54 #include <sstream>
  55
  56 using lyx::pos_type;
  57
  58 using lyx::support::subst;
  59
  60 using std::distance;
  61 using std::endl;
  62 using std::list;
  63 using std::stack;
  64 using std::string;
  65 using std::ostream;
  66 using std::ostringstream;
  67
  68
  69 ParagraphList::ParagraphList()
  70 {}
  71
  72
  73 Paragraph::Paragraph()
  74         : begin_of_body_(0), pimpl_(new Paragraph::Pimpl(this))
  75 {
  76         itemdepth = 0;
  77         params().clear();
  78 }
  79
  80
  81 Paragraph::Paragraph(Paragraph const & par)
  82         :       itemdepth(par.itemdepth), insetlist(par.insetlist),
  83                 dim_(par.dim_),
  84                 rows_(par.rows_), rowSignature_(par.rowSignature_),
  85                 layout_(par.layout_),
  86                 text_(par.text_), begin_of_body_(par.begin_of_body_),
  87           pimpl_(new Paragraph::Pimpl(*par.pimpl_, this))
  88 {
  89         //lyxerr << "Paragraph::Paragraph(Paragraph const&)" << endl;
  90         InsetList::iterator it = insetlist.begin();
  91         InsetList::iterator end = insetlist.end();
  92         for (; it != end; ++it)
  93                 it->inset = it->inset->clone().release();
  94 }
  95
  96
  97 Paragraph & Paragraph::operator=(Paragraph const & par)
  98 {
  99         // needed as we will destroy the pimpl_ before copying it
 100         if (&par != this) {
 101                 itemdepth = par.itemdepth;
 102
 103                 insetlist = par.insetlist;
 104                 InsetList::iterator it = insetlist.begin();
 105                 InsetList::iterator end = insetlist.end();
 106                 for (; it != end; ++it)
 107                         it->inset = it->inset->clone().release();
 108
 109                 rows_ = par.rows_;
 110                 dim_ = par.dim_;
 111                 rowSignature_ = par.rowSignature_;
 112                 layout_ = par.layout();
 113                 text_ = par.text_;
 114                 begin_of_body_ = par.begin_of_body_;
 115
 116                 delete pimpl_;
 117                 pimpl_ = new Pimpl(*par.pimpl_, this);
 118         }
 119         return *this;
 120 }
 121
 122
 123 Paragraph::~Paragraph()
 124 {
 125         delete pimpl_;
 126         //
 127         //lyxerr << "Paragraph::paragraph_id = "
 128         //       << Paragraph::paragraph_id << endl;
 129 }
 130
 131
 132 void Paragraph::write(Buffer const & buf, ostream & os,
 133                           BufferParams const & bparams,
 134                           depth_type & dth) const
 135 {
 136         // The beginning or end of a deeper (i.e. nested) area?
 137         if (dth != params().depth()) {
 138                 if (params().depth() > dth) {
 139                         while (params().depth() > dth) {
 140                                 os << "\n\\begin_deeper";
 141                                 ++dth;
 142                         }
 143                 } else {
 144                         while (params().depth() < dth) {
 145                                 os << "\n\\end_deeper";
 146                                 --dth;
 147                         }
 148                 }
 149         }
 150
 151         // First write the layout
 152         os << "\n\\begin_layout " << layout()->name() << '\n';
 153
 154         params().write(os);
 155
 156         LyXFont font1(LyXFont::ALL_INHERIT, bparams.language);
 157
 158         Change running_change = Change(Change::UNCHANGED);
 159         lyx::time_type const curtime(lyx::current_time());
 160
 161         int column = 0;
 162         for (pos_type i = 0; i <= size(); ++i) {
 163
 164                 Change change = pimpl_->lookupChangeFull(i);
 165                 Changes::lyxMarkChange(os, column, curtime, running_change, change);
 166                 running_change = change;
 167
 168                 if (i == size())
 169                         break;
 170
 171                 // Write font changes
 172                 LyXFont font2 = getFontSettings(bparams, i);
 173                 if (font2 != font1) {
 174                         font2.lyxWriteChanges(font1, os);
 175                         column = 0;
 176                         font1 = font2;
 177                 }
 178
 179                 value_type const c = getChar(i);
 180                 switch (c) {
 181                 case META_INSET:
 182                 {
 183                         InsetBase const * inset = getInset(i);
 184                         if (inset)
 185                                 if (inset->directWrite()) {
 186                                         // international char, let it write
 187                                         // code directly so it's shorter in
 188                                         // the file
 189                                         inset->write(buf, os);
 190                                 } else {
 191                                         if (i)
 192                                                 os << '\n';
 193                                         os << "\\begin_inset ";
 194                                         inset->write(buf, os);
 195                                         os << "\n\\end_inset\n\n";
 196                                         column = 0;
 197                                 }
 198                 }
 199                 break;
 200                 case '\\':
 201                         os << "\n\\backslash\n";
 202                         column = 0;
 203                         break;
 204                 case '.':
 205                         if (i + 1 < size() && getChar(i + 1) == ' ') {
 206                                 os << ".\n";
 207                                 column = 0;
 208                         } else
 209                                 os << '.';
 210                         break;
 211                 default:
 212                         if ((column > 70 && c == ' ')
 213                             || column > 79) {
 214                                 os << '\n';
 215                                 column = 0;
 216                         }
 217                         // this check is to amend a bug. LyX sometimes
 218                         // inserts '\0' this could cause problems.
 219                         if (c != '\0')
 220                                 os << c;
 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 void Paragraph::eraseIntern(lyx::pos_type pos)
 240 {
 241         pimpl_->eraseIntern(pos);
 242 }
 243
 244
 245 bool Paragraph::erase(pos_type pos)
 246 {
 247         return pimpl_->erase(pos);
 248 }
 249
 250
 251 int Paragraph::erase(pos_type start, pos_type end)
 252 {
 253         return pimpl_->erase(start, end);
 254 }
 255
 256
 257 void Paragraph::insert(pos_type start, string const & str,
 258                        LyXFont const & font)
 259 {
 260         for (size_t i = 0, n = str.size(); i != n ; ++i)
 261                 insertChar(start + i, str[i], font);
 262 }
 263
 264
 265 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
 266                            Change change)
 267 {
 268         pimpl_->insertChar(pos, c, change);
 269 }
 270
 271
 272 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
 273                            LyXFont const & font, Change change)
 274 {
 275         pimpl_->insertChar(pos, c, change);
 276         setFont(pos, font);
 277 }
 278
 279
 280 void Paragraph::insertInset(pos_type pos, InsetBase * inset, Change change)
 281 {
 282         pimpl_->insertInset(pos, inset, change);
 283 }
 284
 285
 286 void Paragraph::insertInset(pos_type pos, InsetBase * inset,
 287                             LyXFont const & font, Change change)
 288 {
 289         pimpl_->insertInset(pos, inset, change);
 290         setFont(pos, font);
 291 }
 292
 293
 294 bool Paragraph::insetAllowed(InsetBase_code code)
 295 {
 296         return !pimpl_->inset_owner || pimpl_->inset_owner->insetAllowed(code);
 297 }
 298
 299
 300 // Gets uninstantiated font setting at position.
 301 LyXFont const Paragraph::getFontSettings(BufferParams const & bparams,
 302                                          pos_type pos) const
 303 {
 304         if (pos > size()) {
 305                 lyxerr << " pos: " << pos << " size: " << size() << endl;
 306                 BOOST_ASSERT(pos <= size());
 307         }
 308
 309         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 310         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
 311         for (; cit != end; ++cit)
 312                 if (cit->pos() >= pos)
 313                         break;
 314
 315         if (cit != end)
 316                 return cit->font();
 317
 318         if (pos == size() && !empty())
 319                 return getFontSettings(bparams, pos - 1);
 320
 321         return LyXFont(LyXFont::ALL_INHERIT, getParLanguage(bparams));
 322 }
 323
 324
 325 FontSpan Paragraph::fontSpan(lyx::pos_type pos) const
 326 {
 327         BOOST_ASSERT(pos <= size());
 328         lyx::pos_type start = 0;
 329
 330         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 331         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
 332         for (; cit != end; ++cit) {
 333                 if (cit->pos() >= pos) {
 334                         if (pos >= beginOfBody())
 335                                 return FontSpan(std::max(start, beginOfBody()),
 336                                                 cit->pos());
 337                         else
 338                                 return FontSpan(start,
 339                                                 std::min(beginOfBody() - 1,
 340                                                          cit->pos()));
 341                 }
 342                 start = cit->pos() + 1;
 343         }
 344
 345         // This should not happen, but if so, we take no chances.
 346         //lyxerr << "Paragraph::getEndPosOfFontSpan: This should not happen!"
 347         //      << endl;
 348         return FontSpan(pos, pos);
 349 }
 350
 351
 352 // Gets uninstantiated font setting at position 0
 353 LyXFont const Paragraph::getFirstFontSettings(BufferParams const & bparams) const
 354 {
 355         if (!empty() && !pimpl_->fontlist.empty())
 356                 return pimpl_->fontlist[0].font();
 357
 358         return LyXFont(LyXFont::ALL_INHERIT, bparams.language);
 359 }
 360
 361
 362 // Gets the fully instantiated font at a given position in a paragraph
 363 // This is basically the same function as LyXText::GetFont() in text2.C.
 364 // The difference is that this one is used for generating the LaTeX file,
 365 // and thus cosmetic "improvements" are disallowed: This has to deliver
 366 // the true picture of the buffer. (Asger)
 367 LyXFont const Paragraph::getFont(BufferParams const & bparams, pos_type pos,
 368                                  LyXFont const & outerfont) const
 369 {
 370         BOOST_ASSERT(pos >= 0);
 371
 372         LyXLayout_ptr const & lout = layout();
 373
 374         pos_type const body_pos = beginOfBody();
 375
 376         LyXFont layoutfont;
 377         if (pos < body_pos)
 378                 layoutfont = lout->labelfont;
 379         else
 380                 layoutfont = lout->font;
 381
 382         LyXFont font = getFontSettings(bparams, pos);
 383         font.realize(layoutfont);
 384         font.realize(outerfont);
 385         font.realize(bparams.getLyXTextClass().defaultfont());
 386
 387         return font;
 388 }
 389
 390
 391 LyXFont const Paragraph::getLabelFont
 392         (BufferParams const & bparams, LyXFont const & outerfont) const
 393 {
 394         LyXFont tmpfont = layout()->labelfont;
 395         tmpfont.setLanguage(getParLanguage(bparams));
 396         tmpfont.realize(outerfont);
 397         tmpfont.realize(bparams.getLyXTextClass().defaultfont());
 398         return tmpfont;
 399 }
 400
 401
 402 LyXFont const Paragraph::getLayoutFont
 403         (BufferParams const & bparams, LyXFont const & outerfont) const
 404 {
 405         LyXFont tmpfont = layout()->font;
 406         tmpfont.setLanguage(getParLanguage(bparams));
 407         tmpfont.realize(outerfont);
 408         tmpfont.realize(bparams.getLyXTextClass().defaultfont());
 409         return tmpfont;
 410 }
 411
 412
 413 /// Returns the height of the highest font in range
 414 LyXFont_size Paragraph::highestFontInRange
 415         (pos_type startpos, pos_type endpos, LyXFont_size def_size) const
 416 {
 417         if (pimpl_->fontlist.empty())
 418                 return def_size;
 419
 420         Pimpl::FontList::const_iterator end_it = pimpl_->fontlist.begin();
 421         Pimpl::FontList::const_iterator const end = pimpl_->fontlist.end();
 422         for (; end_it != end; ++end_it) {
 423                 if (end_it->pos() >= endpos)
 424                         break;
 425         }
 426
 427         if (end_it != end)
 428                 ++end_it;
 429
 430         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 431         for (; cit != end; ++cit) {
 432                 if (cit->pos() >= startpos)
 433                         break;
 434         }
 435
 436         LyXFont::FONT_SIZE maxsize = LyXFont::SIZE_TINY;
 437         for (; cit != end_it; ++cit) {
 438                 LyXFont::FONT_SIZE size = cit->font().size();
 439                 if (size == LyXFont::INHERIT_SIZE)
 440                         size = def_size;
 441                 if (size > maxsize && size <= LyXFont::SIZE_HUGER)
 442                         maxsize = size;
 443         }
 444         return maxsize;
 445 }
 446
 447
 448 Paragraph::value_type
 449 Paragraph::getUChar(BufferParams const & bparams, pos_type pos) const
 450 {
 451         value_type c = getChar(pos);
 452         if (!lyxrc.rtl_support)
 453                 return c;
 454
 455         value_type uc = c;
 456         switch (c) {
 457         case '(':
 458                 uc = ')';
 459                 break;
 460         case ')':
 461                 uc = '(';
 462                 break;
 463         case '[':
 464                 uc = ']';
 465                 break;
 466         case ']':
 467                 uc = '[';
 468                 break;
 469         case '{':
 470                 uc = '}';
 471                 break;
 472         case '}':
 473                 uc = '{';
 474                 break;
 475         case '<':
 476                 uc = '>';
 477                 break;
 478         case '>':
 479                 uc = '<';
 480                 break;
 481         }
 482         if (uc != c && getFontSettings(bparams, pos).isRightToLeft())
 483                 return uc;
 484         else
 485                 return c;
 486 }
 487
 488
 489 void Paragraph::setFont(pos_type pos, LyXFont const & font)
 490 {
 491         BOOST_ASSERT(pos <= size());
 492
 493         // First, reduce font against layout/label font
 494         // Update: The setCharFont() routine in text2.C already
 495         // reduces font, so we don't need to do that here. (Asger)
 496         // No need to simplify this because it will disappear
 497         // in a new kernel. (Asger)
 498         // Next search font table
 499
 500         Pimpl::FontList::iterator beg = pimpl_->fontlist.begin();
 501         Pimpl::FontList::iterator it = beg;
 502         Pimpl::FontList::iterator endit = pimpl_->fontlist.end();
 503         for (; it != endit; ++it) {
 504                 if (it->pos() >= pos)
 505                         break;
 506         }
 507         size_t const i = distance(beg, it);
 508         bool notfound = (it == endit);
 509
 510         if (!notfound && pimpl_->fontlist[i].font() == font)
 511                 return;
 512
 513         bool begin = pos == 0 || notfound ||
 514                 (i > 0 && pimpl_->fontlist[i - 1].pos() == pos - 1);
 515         // Is position pos is a beginning of a font block?
 516         bool end = !notfound && pimpl_->fontlist[i].pos() == pos;
 517         // Is position pos is the end of a font block?
 518         if (begin && end) { // A single char block
 519                 if (i + 1 < pimpl_->fontlist.size() &&
 520                     pimpl_->fontlist[i + 1].font() == font) {
 521                         // Merge the singleton block with the next block
 522                         pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i);
 523                         if (i > 0 && pimpl_->fontlist[i - 1].font() == font)
 524                                 pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i - 1);
 525                 } else if (i > 0 && pimpl_->fontlist[i - 1].font() == font) {
 526                         // Merge the singleton block with the previous block
 527                         pimpl_->fontlist[i - 1].pos(pos);
 528                         pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i);
 529                 } else
 530                         pimpl_->fontlist[i].font(font);
 531         } else if (begin) {
 532                 if (i > 0 && pimpl_->fontlist[i - 1].font() == font)
 533                         pimpl_->fontlist[i - 1].pos(pos);
 534                 else
 535                         pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i,
 536                                         Pimpl::FontTable(pos, font));
 537         } else if (end) {
 538                 pimpl_->fontlist[i].pos(pos - 1);
 539                 if (!(i + 1 < pimpl_->fontlist.size() &&
 540                       pimpl_->fontlist[i + 1].font() == font))
 541                         pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i + 1,
 542                                         Pimpl::FontTable(pos, font));
 543         } else { // The general case. The block is splitted into 3 blocks
 544                 pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i,
 545                                 Pimpl::FontTable(pos - 1, pimpl_->fontlist[i].font()));
 546                 pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i + 1,
 547                                 Pimpl::FontTable(pos, font));
 548         }
 549 }
 550
 551
 552 void Paragraph::makeSameLayout(Paragraph const & par)
 553 {
 554         layout(par.layout());
 555         // move to pimpl?
 556         params() = par.params();
 557 }
 558
 559
 560 int Paragraph::stripLeadingSpaces()
 561 {
 562         if (isFreeSpacing())
 563                 return 0;
 564
 565         int i = 0;
 566         while (!empty() && (isNewline(0) || isLineSeparator(0))) {
 567                 // Set Change::Type to Change::INSERTED to quietly remove it
 568                 setChange(0, Change::INSERTED);
 569                 erase(0);
 570                 ++i;
 571         }
 572
 573         return i;
 574 }
 575
 576
 577 bool Paragraph::hasSameLayout(Paragraph const & par) const
 578 {
 579         return par.layout() == layout() && params().sameLayout(par.params());
 580 }
 581
 582
 583 Paragraph::depth_type Paragraph::getDepth() const
 584 {
 585         return params().depth();
 586 }
 587
 588
 589 Paragraph::depth_type Paragraph::getMaxDepthAfter() const
 590 {
 591         if (layout()->isEnvironment())
 592                 return params().depth() + 1;
 593         else
 594                 return params().depth();
 595 }
 596
 597
 598 char Paragraph::getAlign() const
 599 {
 600         return params().align();
 601 }
 602
 603
 604 string const & Paragraph::getLabelstring() const
 605 {
 606         return params().labelString();
 607 }
 608
 609
 610 // the next two functions are for the manual labels
 611 string const Paragraph::getLabelWidthString() const
 612 {
 613         if (!params().labelWidthString().empty())
 614                 return params().labelWidthString();
 615         else
 616                 return _("Senseless with this layout!");
 617 }
 618
 619
 620 void Paragraph::setLabelWidthString(string const & s)
 621 {
 622         params().labelWidthString(s);
 623 }
 624
 625
 626 void Paragraph::applyLayout(LyXLayout_ptr const & new_layout)
 627 {
 628         layout(new_layout);
 629         params().labelWidthString(string());
 630         params().align(LYX_ALIGN_LAYOUT);
 631         params().spacing(Spacing(Spacing::Default));
 632 }
 633
 634
 635 pos_type Paragraph::beginOfBody() const
 636 {
 637         return begin_of_body_;
 638 }
 639
 640
 641 void Paragraph::setBeginOfBody()
 642 {
 643         if (layout()->labeltype != LABEL_MANUAL) {
 644                 begin_of_body_ = 0;
 645                 return;
 646         }
 647
 648         // Unroll the first two cycles of the loop
 649         // and remember the previous character to
 650         // remove unnecessary getChar() calls
 651         pos_type i = 0;
 652         pos_type end = size();
 653         if (i < end && !isNewline(i)) {
 654                 ++i;
 655                 char previous_char = 0;
 656                 char temp = 0;
 657                 if (i < end) {
 658                         previous_char = text_[i];
 659                         if (!isNewline(i)) {
 660                                 ++i;
 661                                 while (i < end && previous_char != ' ') {
 662                                         temp = text_[i];
 663                                         if (isNewline(i))
 664                                                 break;
 665                                         ++i;
 666                                         previous_char = temp;
 667                                 }
 668                         }
 669                 }
 670         }
 671
 672         begin_of_body_ = i;
 673 }
 674
 675
 676 // returns -1 if inset not found
 677 int Paragraph::getPositionOfInset(InsetBase const * inset) const
 678 {
 679         // Find the entry.
 680         InsetList::const_iterator it = insetlist.begin();
 681         InsetList::const_iterator end = insetlist.end();
 682         for (; it != end; ++it)
 683                 if (it->inset == inset)
 684                         return it->pos;
 685         return -1;
 686 }
 687
 688
 689 InsetBibitem * Paragraph::bibitem() const
 690 {
 691         if (!insetlist.empty()) {
 692                 InsetBase * inset = insetlist.begin()->inset;
 693                 if (inset->lyxCode() == InsetBase::BIBITEM_CODE)
 694                         return static_cast<InsetBibitem *>(inset);
 695         }
 696         return 0;
 697 }
 698
 699
 700 bool Paragraph::forceDefaultParagraphs() const
 701 {
 702         return inInset() && inInset()->forceDefaultParagraphs(0);
 703 }
 704
 705
 706 namespace {
 707
 708 // paragraphs inside floats need different alignment tags to avoid
 709 // unwanted space
 710
 711 bool noTrivlistCentering(InsetBase::Code code)
 712 {
 713         return code == InsetBase::FLOAT_CODE || code == InsetBase::WRAP_CODE;
 714 }
 715
 716
 717 string correction(string const & orig)
 718 {
 719         if (orig == "flushleft")
 720                 return "raggedright";
 721         if (orig == "flushright")
 722                 return "raggedleft";
 723         if (orig == "center")
 724                 return "centering";
 725         return orig;
 726 }
 727
 728
 729 string const corrected_env(string const & suffix, string const & env,
 730         InsetBase::Code code)
 731 {
 732         string output = suffix + "{";
 733         if (noTrivlistCentering(code))
 734                 output += correction(env);
 735         else
 736                 output += env;
 737         return output + "}";
 738 }
 739
 740 } // namespace anon
 741
 742
 743 // This could go to ParagraphParameters if we want to
 744 int Paragraph::startTeXParParams(BufferParams const & bparams,
 745                                  ostream & os, bool moving_arg) const
 746 {
 747         int column = 0;
 748
 749         if (params().noindent()) {
 750                 os << "\\noindent ";
 751                 column += 10;
 752         }
 753
 754         switch (params().align()) {
 755         case LYX_ALIGN_NONE:
 756         case LYX_ALIGN_BLOCK:
 757         case LYX_ALIGN_LAYOUT:
 758         case LYX_ALIGN_SPECIAL:
 759                 break;
 760         case LYX_ALIGN_LEFT:
 761         case LYX_ALIGN_RIGHT:
 762         case LYX_ALIGN_CENTER:
 763                 if (moving_arg) {
 764                         os << "\\protect";
 765                         column += 8;
 766                 }
 767                 break;
 768         }
 769
 770         switch (params().align()) {
 771         case LYX_ALIGN_NONE:
 772         case LYX_ALIGN_BLOCK:
 773         case LYX_ALIGN_LAYOUT:
 774         case LYX_ALIGN_SPECIAL:
 775                 break;
 776         case LYX_ALIGN_LEFT: {
 777                 string output;
 778                 if (getParLanguage(bparams)->babel() != "hebrew")
 779                         output = corrected_env("\\begin", "flushleft", ownerCode());
 780                 else
 781                         output = corrected_env("\\begin", "flushright", ownerCode());
 782                 os << output;
 783                 column += output.size();
 784                 break;
 785         } case LYX_ALIGN_RIGHT: {
 786                 string output;
 787                 if (getParLanguage(bparams)->babel() != "hebrew")
 788                         output = corrected_env("\\begin", "flushright", ownerCode());
 789                 else
 790                         output = corrected_env("\\begin", "flushleft", ownerCode());
 791                 os << output;
 792                 column += output.size();
 793                 break;
 794         } case LYX_ALIGN_CENTER: {
 795                 string output;
 796                 output = corrected_env("\\begin", "center", ownerCode());
 797                 os << output;
 798                 column += output.size();
 799                 break;
 800         }
 801         }
 802
 803         return column;
 804 }
 805
 806
 807 // This could go to ParagraphParameters if we want to
 808 int Paragraph::endTeXParParams(BufferParams const & bparams,
 809                                ostream & os, bool moving_arg) const
 810 {
 811         int column = 0;
 812
 813         switch (params().align()) {
 814         case LYX_ALIGN_NONE:
 815         case LYX_ALIGN_BLOCK:
 816         case LYX_ALIGN_LAYOUT:
 817         case LYX_ALIGN_SPECIAL:
 818                 break;
 819         case LYX_ALIGN_LEFT:
 820         case LYX_ALIGN_RIGHT:
 821         case LYX_ALIGN_CENTER:
 822                 if (moving_arg) {
 823                         os << "\\protect";
 824                         column = 8;
 825                 }
 826                 break;
 827         }
 828
 829         switch (params().align()) {
 830         case LYX_ALIGN_NONE:
 831         case LYX_ALIGN_BLOCK:
 832         case LYX_ALIGN_LAYOUT:
 833         case LYX_ALIGN_SPECIAL:
 834                 break;
 835         case LYX_ALIGN_LEFT: {
 836                 string output;
 837                 if (getParLanguage(bparams)->babel() != "hebrew")
 838                         output = corrected_env("\\par\\end", "flushleft", ownerCode());
 839                 else
 840                         output = corrected_env("\\par\\end", "flushright", ownerCode());
 841                 os << output;
 842                 column += output.size();
 843                 break;
 844         } case LYX_ALIGN_RIGHT: {
 845                 string output;
 846                 if (getParLanguage(bparams)->babel() != "hebrew")
 847                         output = corrected_env("\\par\\end", "flushright", ownerCode());
 848                 else
 849                         output = corrected_env("\\par\\end", "flushleft", ownerCode());
 850                 os << output;
 851                 column += output.size();
 852                 break;
 853         } case LYX_ALIGN_CENTER: {
 854                 string output;
 855                 output = corrected_env("\\par\\end", "center", ownerCode());
 856                 os << output;
 857                 column += output.size();
 858                 break;
 859         }
 860         }
 861
 862         return column;
 863 }
 864
 865
 866 // This one spits out the text of the paragraph
 867 bool Paragraph::simpleTeXOnePar(Buffer const & buf,
 868                                 BufferParams const & bparams,
 869                                 LyXFont const & outerfont,
 870                                 ostream & os, TexRow & texrow,
 871                                 OutputParams const & runparams) const
 872 {
 873         lyxerr[Debug::LATEX] << "SimpleTeXOnePar...     " << this << endl;
 874
 875         bool return_value = false;
 876
 877         LyXLayout_ptr style;
 878
 879         // well we have to check if we are in an inset with unlimited
 880         // length (all in one row) if that is true then we don't allow
 881         // any special options in the paragraph and also we don't allow
 882         // any environment other then "Standard" to be valid!
 883         bool asdefault = forceDefaultParagraphs();
 884
 885         if (asdefault) {
 886                 style = bparams.getLyXTextClass().defaultLayout();
 887         } else {
 888                 style = layout();
 889         }
 890
 891         LyXFont basefont;
 892
 893         LaTeXFeatures features(buf, bparams, runparams.nice);
 894
 895         // output change tracking marks only if desired,
 896         // if dvipost is installed,
 897         // and with dvi/ps (other formats don't work)
 898         bool const output = bparams.output_changes
 899                 && runparams.flavor == OutputParams::LATEX
 900                 && features.isAvailable("dvipost");
 901
 902         // Maybe we have to create a optional argument.
 903         pos_type body_pos = beginOfBody();
 904         unsigned int column = 0;
 905
 906         if (body_pos > 0) {
 907                 // the optional argument is kept in curly brackets in
 908                 // case it contains a ']'
 909                 os << "[{";
 910                 column += 2;
 911                 basefont = getLabelFont(bparams, outerfont);
 912         } else {
 913                 basefont = getLayoutFont(bparams, outerfont);
 914         }
 915
 916         // Which font is currently active?
 917         LyXFont running_font(basefont);
 918         // Do we have an open font change?
 919         bool open_font = false;
 920
 921         Change::Type running_change = Change::UNCHANGED;
 922
 923         texrow.start(id(), 0);
 924
 925         // if the paragraph is empty, the loop will not be entered at all
 926         if (empty()) {
 927                 if (style->isCommand()) {
 928                         os << '{';
 929                         ++column;
 930                 }
 931                 if (!asdefault)
 932                         column += startTeXParParams(bparams, os,
 933                                                     runparams.moving_arg);
 934         }
 935
 936         for (pos_type i = 0; i < size(); ++i) {
 937                 ++column;
 938                 // First char in paragraph or after label?
 939                 if (i == body_pos) {
 940                         if (body_pos > 0) {
 941                                 if (open_font) {
 942                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
 943                                         open_font = false;
 944                                 }
 945                                 basefont = getLayoutFont(bparams, outerfont);
 946                                 running_font = basefont;
 947                                 os << "}] ";
 948                                 column +=3;
 949                         }
 950                         if (style->isCommand()) {
 951                                 os << '{';
 952                                 ++column;
 953                         }
 954
 955                         if (!asdefault)
 956                                 column += startTeXParParams(bparams, os,
 957                                                             runparams.moving_arg);
 958                 }
 959
 960                 value_type c = getChar(i);
 961
 962                 // Fully instantiated font
 963                 LyXFont font = getFont(bparams, i, outerfont);
 964
 965                 LyXFont const last_font = running_font;
 966
 967                 // Spaces at end of font change are simulated to be
 968                 // outside font change, i.e. we write "\textXX{text} "
 969                 // rather than "\textXX{text }". (Asger)
 970                 if (open_font && c == ' ' && i <= size() - 2) {
 971                         LyXFont const & next_font = getFont(bparams, i + 1, outerfont);
 972                         if (next_font != running_font && next_font != font) {
 973                                 font = next_font;
 974                         }
 975                 }
 976
 977                 // We end font definition before blanks
 978                 if (open_font &&
 979                     (font != running_font ||
 980                      font.language() != running_font.language()))
 981                 {
 982                         column += running_font.latexWriteEndChanges(os,
 983                                                                     basefont,
 984                                                                     (i == body_pos-1) ? basefont : font);
 985                         running_font = basefont;
 986                         open_font = false;
 987                 }
 988
 989                 // Blanks are printed before start of fontswitch
 990                 if (c == ' ') {
 991                         // Do not print the separation of the optional argument
 992                         if (i != body_pos - 1) {
 993                                 pimpl_->simpleTeXBlanks(os, texrow, i,
 994                                                        column, font, *style);
 995                         }
 996                 }
 997
 998                 // Do we need to change font?
 999                 if ((font != running_font ||
1000                      font.language() != running_font.language()) &&
1001                         i != body_pos - 1)
1002                 {
1003                         column += font.latexWriteStartChanges(os, basefont,
1004                                                               last_font);
1005                         running_font = font;
1006                         open_font = true;
1007                 }
1008
1009                 Change::Type change = pimpl_->lookupChange(i);
1010
1011                 column += Changes::latexMarkChange(os, running_change,
1012                         change, output);
1013                 running_change = change;
1014
1015                 // do not output text which is marked deleted
1016                 // if change tracking output is not desired
1017                 if (output || running_change != Change::DELETED) {
1018                         OutputParams rp = runparams;
1019                         rp.free_spacing = style->free_spacing;
1020                         rp.local_font = &font;
1021                         rp.intitle = style->intitle;
1022                         pimpl_->simpleTeXSpecialChars(buf, bparams,
1023                                                 os, texrow, rp,
1024                                                 font, running_font,
1025                                                 basefont, outerfont, open_font,
1026                                                 running_change,
1027                                                 *style, i, column, c);
1028                 }
1029         }
1030
1031         column += Changes::latexMarkChange(os,
1032                         running_change, Change::UNCHANGED, output);
1033
1034         // If we have an open font definition, we have to close it
1035         if (open_font) {
1036 #ifdef FIXED_LANGUAGE_END_DETECTION
1037                 if (next_) {
1038                         running_font
1039                                 .latexWriteEndChanges(os, basefont,
1040                                                       next_->getFont(bparams,
1041                                                       0, outerfont));
1042                 } else {
1043                         running_font.latexWriteEndChanges(os, basefont,
1044                                                           basefont);
1045                 }
1046 #else
1047 #ifdef WITH_WARNINGS
1048 //#warning For now we ALWAYS have to close the foreign font settings if they are
1049 //#warning there as we start another \selectlanguage with the next paragraph if
1050 //#warning we are in need of this. This should be fixed sometime (Jug)
1051 #endif
1052                 running_font.latexWriteEndChanges(os, basefont,  basefont);
1053 #endif
1054         }
1055
1056         // Needed if there is an optional argument but no contents.
1057         if (body_pos > 0 && body_pos == size()) {
1058                 os << "}]~";
1059                 return_value = false;
1060         }
1061
1062         if (!asdefault) {
1063                 column += endTeXParParams(bparams, os, runparams.moving_arg);
1064         }
1065
1066         lyxerr[Debug::LATEX] << "SimpleTeXOnePar...done " << this << endl;
1067         return return_value;
1068 }
1069
1070
1071 namespace {
1072
1073 // checks, if newcol chars should be put into this line
1074 // writes newline, if necessary.
1075 void sgmlLineBreak(ostream & os, string::size_type & colcount,
1076                           string::size_type newcol)
1077 {
1078         colcount += newcol;
1079         if (colcount > lyxrc.ascii_linelen) {
1080                 os << "\n";
1081                 colcount = newcol; // assume write after this call
1082         }
1083 }
1084
1085 enum PAR_TAG {
1086         PAR_NONE=0,
1087         TT = 1,
1088         SF = 2,
1089         BF = 4,
1090         IT = 8,
1091         SL = 16,
1092         EM = 32
1093 };
1094
1095
1096 string tag_name(PAR_TAG const & pt) {
1097         switch (pt) {
1098         case PAR_NONE: return "!-- --";
1099         case TT: return "tt";
1100         case SF: return "sf";
1101         case BF: return "bf";
1102         case IT: return "it";
1103         case SL: return "sl";
1104         case EM: return "em";
1105         }
1106         return "";
1107 }
1108
1109
1110 inline
1111 void operator|=(PAR_TAG & p1, PAR_TAG const & p2)
1112 {
1113         p1 = static_cast<PAR_TAG>(p1 | p2);
1114 }
1115
1116
1117 inline
1118 void reset(PAR_TAG & p1, PAR_TAG const & p2)
1119 {
1120         p1 = static_cast<PAR_TAG>(p1 & ~p2);
1121 }
1122
1123 } // anon
1124
1125
1126 // Handle internal paragraph parsing -- layout already processed.
1127 void Paragraph::simpleLinuxDocOnePar(Buffer const & buf,
1128                                      ostream & os,
1129                                      LyXFont const & outerfont,
1130                                      OutputParams const & runparams,
1131                                      lyx::depth_type /*depth*/) const
1132 {
1133         LyXLayout_ptr const & style = layout();
1134
1135         string::size_type char_line_count = 5;     // Heuristic choice ;-)
1136
1137         // gets paragraph main font
1138         LyXFont font_old;
1139         bool desc_on;
1140         if (style->labeltype == LABEL_MANUAL) {
1141                 font_old = style->labelfont;
1142                 desc_on = true;
1143         } else {
1144                 font_old = style->font;
1145                 desc_on = false;
1146         }
1147
1148         LyXFont::FONT_FAMILY family_type = LyXFont::ROMAN_FAMILY;
1149         LyXFont::FONT_SERIES series_type = LyXFont::MEDIUM_SERIES;
1150         LyXFont::FONT_SHAPE  shape_type  = LyXFont::UP_SHAPE;
1151         bool is_em = false;
1152
1153         stack<PAR_TAG> tag_state;
1154         // parsing main loop
1155         for (pos_type i = 0; i < size(); ++i) {
1156
1157                 PAR_TAG tag_close = PAR_NONE;
1158                 list < PAR_TAG > tag_open;
1159
1160                 LyXFont const font = getFont(buf.params(), i, outerfont);
1161
1162                 if (font_old.family() != font.family()) {
1163                         switch (family_type) {
1164                         case LyXFont::SANS_FAMILY:
1165                                 tag_close |= SF;
1166                                 break;
1167                         case LyXFont::TYPEWRITER_FAMILY:
1168                                 tag_close |= TT;
1169                                 break;
1170                         default:
1171                                 break;
1172                         }
1173
1174                         family_type = font.family();
1175
1176                         switch (family_type) {
1177                         case LyXFont::SANS_FAMILY:
1178                                 tag_open.push_back(SF);
1179                                 break;
1180                         case LyXFont::TYPEWRITER_FAMILY:
1181                                 tag_open.push_back(TT);
1182                                 break;
1183                         default:
1184                                 break;
1185                         }
1186                 }
1187
1188                 if (font_old.series() != font.series()) {
1189                         switch (series_type) {
1190                         case LyXFont::BOLD_SERIES:
1191                                 tag_close |= BF;
1192                                 break;
1193                         default:
1194                                 break;
1195                         }
1196
1197                         series_type = font.series();
1198
1199                         switch (series_type) {
1200                         case LyXFont::BOLD_SERIES:
1201                                 tag_open.push_back(BF);
1202                                 break;
1203                         default:
1204                                 break;
1205                         }
1206
1207                 }
1208
1209                 if (font_old.shape() != font.shape()) {
1210                         switch (shape_type) {
1211                         case LyXFont::ITALIC_SHAPE:
1212                                 tag_close |= IT;
1213                                 break;
1214                         case LyXFont::SLANTED_SHAPE:
1215                                 tag_close |= SL;
1216                                 break;
1217                         default:
1218                                 break;
1219                         }
1220
1221                         shape_type = font.shape();
1222
1223                         switch (shape_type) {
1224                         case LyXFont::ITALIC_SHAPE:
1225                                 tag_open.push_back(IT);
1226                                 break;
1227                         case LyXFont::SLANTED_SHAPE:
1228                                 tag_open.push_back(SL);
1229                                 break;
1230                         default:
1231                                 break;
1232                         }
1233                 }
1234                 // handle <em> tag
1235                 if (font_old.emph() != font.emph()) {
1236                         if (font.emph() == LyXFont::ON) {
1237                                 tag_open.push_back(EM);
1238                                 is_em = true;
1239                         }
1240                         else if (is_em) {
1241                                 tag_close |= EM;
1242                                 is_em = false;
1243                         }
1244                 }
1245
1246                 list < PAR_TAG > temp;
1247                 while (!tag_state.empty() && tag_close) {
1248                         PAR_TAG k =  tag_state.top();
1249                         tag_state.pop();
1250                         os << "</" << tag_name(k) << '>';
1251                         if (tag_close & k)
1252                                 reset(tag_close,k);
1253                         else
1254                                 temp.push_back(k);
1255                 }
1256
1257                 for(list< PAR_TAG >::const_iterator j = temp.begin();
1258                     j != temp.end(); ++j) {
1259                         tag_state.push(*j);
1260                         os << '<' << tag_name(*j) << '>';
1261                 }
1262
1263                 for(list< PAR_TAG >::const_iterator j = tag_open.begin();
1264                     j != tag_open.end(); ++j) {
1265                         tag_state.push(*j);
1266                         os << '<' << tag_name(*j) << '>';
1267                 }
1268
1269                 value_type c = getChar(i);
1270
1271
1272                 if (c == Paragraph::META_INSET) {
1273                         getInset(i)->linuxdoc(buf, os, runparams);
1274                         font_old = font;
1275                         continue;
1276                 }
1277
1278                 if (style->latexparam() == "CDATA") {
1279                         // "TeX"-Mode on == > SGML-Mode on.
1280                         if (c != '\0')
1281                                 os << c;
1282                         ++char_line_count;
1283                 } else {
1284                         bool ws;
1285                         string str;
1286                         boost::tie(ws, str) = sgml::escapeChar(c);
1287                         if (ws && !isFreeSpacing()) {
1288                                 // in freespacing mode, spaces are
1289                                 // non-breaking characters
1290                                 if (desc_on) { // if char is ' ' then...
1291                                         ++char_line_count;
1292                                         sgmlLineBreak(os, char_line_count, 6);
1293                                         os << "</tag>";
1294                                         desc_on = false;
1295                                 } else  {
1296                                         sgmlLineBreak(os, char_line_count, 1);
1297                                         os << c;
1298                                 }
1299                         } else {
1300                                 os << str;
1301                                 char_line_count += str.length();
1302                         }
1303                 }
1304                 font_old = font;
1305         }
1306
1307         while (!tag_state.empty()) {
1308                 os << "</" << tag_name(tag_state.top()) << '>';
1309                 tag_state.pop();
1310         }
1311
1312         // resets description flag correctly
1313         if (desc_on) {
1314                 // <tag> not closed...
1315                 sgmlLineBreak(os, char_line_count, 6);
1316                 os << "</tag>";
1317         }
1318 }
1319
1320
1321 bool Paragraph::emptyTag() const
1322 {
1323         for (pos_type i = 0; i < size(); ++i) {
1324                 if (isInset(i)) {
1325                         InsetBase const * inset = getInset(i);
1326                         InsetBase::Code lyx_code = inset->lyxCode();
1327                         if (lyx_code != InsetBase::TOC_CODE &&
1328                             lyx_code != InsetBase::INCLUDE_CODE &&
1329                             lyx_code != InsetBase::GRAPHICS_CODE &&
1330                             lyx_code != InsetBase::ERT_CODE &&
1331                             lyx_code != InsetBase::FLOAT_CODE &&
1332                             lyx_code != InsetBase::TABULAR_CODE) {
1333                                 return false;
1334                         }
1335                 } else {
1336                         value_type c = getChar(i);
1337                         if (c != ' ' && c != '\t')
1338                                 return false;
1339                 }
1340         }
1341         return true;
1342 }
1343
1344
1345 string Paragraph::getID(Buffer const & buf, OutputParams const & runparams) const
1346 {
1347         for (pos_type i = 0; i < size(); ++i) {
1348                 if (isInset(i)) {
1349                         InsetBase const * inset = getInset(i);
1350                         InsetBase::Code lyx_code = inset->lyxCode();
1351                         if (lyx_code == InsetBase::LABEL_CODE) {
1352                                 string const id = static_cast<InsetCommand const *>(inset)->getContents();
1353                                 return "id=\"" + sgml::cleanID(buf, runparams, id) + "\"";
1354                         }
1355                 }
1356
1357         }
1358         return string();
1359 }
1360
1361
1362 pos_type Paragraph::getFirstWord(Buffer const & buf, ostream & os, OutputParams const & runparams) const
1363 {
1364         pos_type i;
1365         for (i = 0; i < size(); ++i) {
1366                 if (isInset(i)) {
1367                         InsetBase const * inset = getInset(i);
1368                         inset->docbook(buf, os, runparams);
1369                 } else {
1370                         value_type c = getChar(i);
1371                         if (c == ' ')
1372                                 break;
1373                         bool ws;
1374                         string str;
1375                         boost::tie(ws, str) = sgml::escapeChar(c);
1376
1377                         os << str;
1378                 }
1379         }
1380         return i;
1381 }
1382
1383
1384 bool Paragraph::onlyText(Buffer const & buf, LyXFont const & outerfont, pos_type initial) const
1385 {
1386         LyXFont font_old;
1387
1388         for (pos_type i = initial; i < size(); ++i) {
1389                 LyXFont font = getFont(buf.params(), i, outerfont);
1390                 if (isInset(i))
1391                         return false;
1392                 if (i != initial && font != font_old)
1393                         return false;
1394                 font_old = font;
1395         }
1396
1397         return true;
1398 }
1399
1400
1401 void Paragraph::simpleDocBookOnePar(Buffer const & buf,
1402                                     ostream & os,
1403                                     OutputParams const & runparams,
1404                                     LyXFont const & outerfont,
1405                                     pos_type initial) const
1406 {
1407         bool emph_flag = false;
1408
1409         LyXLayout_ptr const & style = layout();
1410         LyXFont font_old =
1411                 style->labeltype == LABEL_MANUAL ? style->labelfont : style->font;
1412
1413         if (style->pass_thru && !onlyText(buf, outerfont, initial))
1414                 os << "]]>";
1415
1416         // parsing main loop
1417         for (pos_type i = initial; i < size(); ++i) {
1418                 LyXFont font = getFont(buf.params(), i, outerfont);
1419
1420                 // handle <emphasis> tag
1421                 if (font_old.emph() != font.emph()) {
1422                         if (font.emph() == LyXFont::ON) {
1423                                 os << "<emphasis>";
1424                                 emph_flag = true;
1425                         } else if (i != initial) {
1426                                 os << "</emphasis>";
1427                                 emph_flag = false;
1428                         }
1429                 }
1430
1431                 if (isInset(i)) {
1432                         InsetBase const * inset = getInset(i);
1433                         inset->docbook(buf, os, runparams);
1434                 } else {
1435                         value_type c = getChar(i);
1436                         bool ws;
1437                         string str;
1438                         boost::tie(ws, str) = sgml::escapeChar(c);
1439
1440                         if (style->pass_thru)
1441                                 os << c;
1442                         else
1443                                 os << str;
1444                 }
1445                 font_old = font;
1446         }
1447
1448         if (emph_flag) {
1449                 os << "</emphasis>";
1450         }
1451
1452         if (style->free_spacing)
1453                 os << '\n';
1454         if (style->pass_thru && !onlyText(buf, outerfont, initial))
1455                 os << "<![CDATA[";
1456 }
1457
1458
1459 bool Paragraph::isNewline(pos_type pos) const
1460 {
1461         return isInset(pos)
1462                 && getInset(pos)->lyxCode() == InsetBase::NEWLINE_CODE;
1463 }
1464
1465
1466 bool Paragraph::isLineSeparator(pos_type pos) const
1467 {
1468         value_type const c = getChar(pos);
1469         return IsLineSeparatorChar(c)
1470                 || (c == Paragraph::META_INSET && getInset(pos) &&
1471                 getInset(pos)->isLineSeparator());
1472 }
1473
1474
1475 /// Used by the spellchecker
1476 bool Paragraph::isLetter(pos_type pos) const
1477 {
1478         if (isInset(pos))
1479                 return getInset(pos)->isLetter();
1480         else {
1481                 value_type const c = getChar(pos);
1482                 return IsLetterChar(c) || IsDigit(c);
1483         }
1484 }
1485
1486
1487 Language const *
1488 Paragraph::getParLanguage(BufferParams const & bparams) const
1489 {
1490         if (!empty())
1491                 return getFirstFontSettings(bparams).language();
1492 #ifdef WITH_WARNINGS
1493 #warning FIXME we should check the prev par as well (Lgb)
1494 #endif
1495         return bparams.language;
1496 }
1497
1498
1499 bool Paragraph::isRightToLeftPar(BufferParams const & bparams) const
1500 {
1501         return lyxrc.rtl_support
1502                 && getParLanguage(bparams)->RightToLeft()
1503                 && ownerCode() != InsetBase::ERT_CODE;
1504 }
1505
1506
1507 void Paragraph::changeLanguage(BufferParams const & bparams,
1508                                Language const * from, Language const * to)
1509 {
1510         for (pos_type i = 0; i < size(); ++i) {
1511                 LyXFont font = getFontSettings(bparams, i);
1512                 if (font.language() == from) {
1513                         font.setLanguage(to);
1514                         setFont(i, font);
1515                 }
1516         }
1517 }
1518
1519
1520 bool Paragraph::isMultiLingual(BufferParams const & bparams) const
1521 {
1522         Language const * doc_language = bparams.language;
1523         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
1524         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
1525
1526         for (; cit != end; ++cit)
1527                 if (cit->font().language() != ignore_language &&
1528                     cit->font().language() != latex_language &&
1529                     cit->font().language() != doc_language)
1530                         return true;
1531         return false;
1532 }
1533
1534
1535 // Convert the paragraph to a string.
1536 // Used for building the table of contents
1537 string const Paragraph::asString(Buffer const & buffer, bool label) const
1538 {
1539         OutputParams runparams;
1540         return asString(buffer, runparams, label);
1541 }
1542
1543
1544 string const Paragraph::asString(Buffer const & buffer,
1545                                  OutputParams const & runparams,
1546                                  bool label) const
1547 {
1548 #if 0
1549         string s;
1550         if (label && !params().labelString().empty())
1551                 s += params().labelString() + ' ';
1552
1553         for (pos_type i = 0; i < size(); ++i) {
1554                 value_type c = getChar(i);
1555                 if (IsPrintable(c))
1556                         s += c;
1557                 else if (c == META_INSET &&
1558                          getInset(i)->lyxCode() == InsetBase::MATH_CODE) {
1559                         ostringstream os;
1560                         getInset(i)->plaintext(buffer, os, runparams);
1561                         s += subst(STRCONV(os.str()),'\n',' ');
1562                 }
1563         }
1564
1565         return s;
1566 #else
1567         // This should really be done by the caller and not here.
1568         string ret = asString(buffer, runparams, 0, size(), label);
1569         return subst(ret, '\n', ' ');
1570 #endif
1571 }
1572
1573
1574 string const Paragraph::asString(Buffer const & buffer,
1575                                  pos_type beg, pos_type end, bool label) const
1576 {
1577
1578         OutputParams const runparams;
1579         return asString(buffer, runparams, beg, end, label);
1580 }
1581
1582
1583 string const Paragraph::asString(Buffer const & buffer,
1584                                  OutputParams const & runparams,
1585                                  pos_type beg, pos_type end, bool label) const
1586 {
1587         ostringstream os;
1588
1589         if (beg == 0 && label && !params().labelString().empty())
1590                 os << params().labelString() << ' ';
1591
1592         for (pos_type i = beg; i < end; ++i) {
1593                 value_type const c = getUChar(buffer.params(), i);
1594                 if (IsPrintable(c))
1595                         os << c;
1596                 else if (c == META_INSET)
1597                         getInset(i)->textString(buffer, os, runparams);
1598         }
1599
1600         return os.str();
1601 }
1602
1603
1604 void Paragraph::setInsetOwner(InsetBase * inset)
1605 {
1606         pimpl_->inset_owner = inset;
1607 }
1608
1609
1610 void Paragraph::setContentsFromPar(Paragraph const & par)
1611 {
1612         pimpl_->setContentsFromPar(par);
1613 }
1614
1615
1616 void Paragraph::trackChanges(Change::Type type)
1617 {
1618         pimpl_->trackChanges(type);
1619 }
1620
1621
1622 void Paragraph::untrackChanges()
1623 {
1624         pimpl_->untrackChanges();
1625 }
1626
1627
1628 void Paragraph::cleanChanges()
1629 {
1630         pimpl_->cleanChanges();
1631 }
1632
1633
1634 Change::Type Paragraph::lookupChange(lyx::pos_type pos) const
1635 {
1636         BOOST_ASSERT(pos <= size());
1637         return pimpl_->lookupChange(pos);
1638 }
1639
1640
1641 Change const Paragraph::lookupChangeFull(lyx::pos_type pos) const
1642 {
1643         BOOST_ASSERT(pos <= size());
1644         return pimpl_->lookupChangeFull(pos);
1645 }
1646
1647
1648 bool Paragraph::isChanged(pos_type start, pos_type end) const
1649 {
1650         return pimpl_->isChanged(start, end);
1651 }
1652
1653
1654 bool Paragraph::isChangeEdited(pos_type start, pos_type end) const
1655 {
1656         return pimpl_->isChangeEdited(start, end);
1657 }
1658
1659
1660 void Paragraph::setChange(lyx::pos_type pos, Change::Type type)
1661 {
1662         pimpl_->setChange(pos, type);
1663 }
1664
1665
1666 void Paragraph::setChangeFull(lyx::pos_type pos, Change change)
1667 {
1668         pimpl_->setChangeFull(pos, change);
1669 }
1670
1671
1672 void Paragraph::markErased(bool erased)
1673 {
1674         pimpl_->markErased(erased);
1675 }
1676
1677
1678 void Paragraph::acceptChange(pos_type start, pos_type end)
1679 {
1680         return pimpl_->acceptChange(start, end);
1681 }
1682
1683
1684 void Paragraph::rejectChange(pos_type start, pos_type end)
1685 {
1686         return pimpl_->rejectChange(start, end);
1687 }
1688
1689
1690 int Paragraph::id() const
1691 {
1692         return pimpl_->id_;
1693 }
1694
1695
1696 LyXLayout_ptr const & Paragraph::layout() const
1697 {
1698         return layout_;
1699 }
1700
1701
1702 void Paragraph::layout(LyXLayout_ptr const & new_layout)
1703 {
1704         layout_ = new_layout;
1705 }
1706
1707
1708 InsetBase * Paragraph::inInset() const
1709 {
1710         return pimpl_->inset_owner;
1711 }
1712
1713
1714 InsetBase::Code Paragraph::ownerCode() const
1715 {
1716         return pimpl_->inset_owner
1717                 ? pimpl_->inset_owner->lyxCode() : InsetBase::NO_CODE;
1718 }
1719
1720
1721 void Paragraph::clearContents()
1722 {
1723         text_.clear();
1724 }
1725
1726
1727 void Paragraph::setChar(pos_type pos, value_type c)
1728 {
1729         text_[pos] = c;
1730 }
1731
1732
1733 ParagraphParameters & Paragraph::params()
1734 {
1735         return pimpl_->params;
1736 }
1737
1738
1739 ParagraphParameters const & Paragraph::params() const
1740 {
1741         return pimpl_->params;
1742 }
1743
1744
1745 bool Paragraph::isFreeSpacing() const
1746 {
1747         if (layout()->free_spacing)
1748                 return true;
1749
1750         // for now we just need this, later should we need this in some
1751         // other way we can always add a function to InsetBase too.
1752         return ownerCode() == InsetBase::ERT_CODE;
1753 }
1754
1755
1756 bool Paragraph::allowEmpty() const
1757 {
1758         if (layout()->keepempty)
1759                 return true;
1760         return ownerCode() == InsetBase::ERT_CODE;
1761 }
1762
1763
1764 Row & Paragraph::getRow(pos_type pos, bool boundary)
1765 {
1766         BOOST_ASSERT(!rows().empty());
1767
1768         // If boundary is set we should return the row on which
1769         // the character before is inside.
1770         if (pos > 0 && boundary)
1771                 --pos;
1772
1773         RowList::iterator rit = rows_.end();
1774         RowList::iterator const begin = rows_.begin();
1775
1776         for (--rit; rit != begin && rit->pos() > pos; --rit)
1777                 ;
1778
1779         return *rit;
1780 }
1781
1782
1783 Row const & Paragraph::getRow(pos_type pos, bool boundary) const
1784 {
1785         BOOST_ASSERT(!rows().empty());
1786
1787         // If boundary is set we should return the row on which
1788         // the character before is inside.
1789         if (pos > 0 && boundary)
1790                 --pos;
1791
1792         RowList::const_iterator rit = rows_.end();
1793         RowList::const_iterator const begin = rows_.begin();
1794
1795         for (--rit; rit != begin && rit->pos() > pos; --rit)
1796                 ;
1797
1798         return *rit;
1799 }
1800
1801
1802 size_t Paragraph::pos2row(pos_type pos) const
1803 {
1804         BOOST_ASSERT(!rows().empty());
1805
1806         RowList::const_iterator rit = rows_.end();
1807         RowList::const_iterator const begin = rows_.begin();
1808
1809         for (--rit; rit != begin && rit->pos() > pos; --rit)
1810                 ;
1811
1812         return rit - begin;
1813 }
1814
1815
1816 unsigned char Paragraph::transformChar(unsigned char c, pos_type pos) const
1817 {
1818         if (!Encodings::is_arabic(c))
1819                 if (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 && IsDigit(c))
1820                         return c + (0xb0 - '0');
1821                 else
1822                         return c;
1823
1824         unsigned char const prev_char = pos > 0 ? getChar(pos - 1) : ' ';
1825         unsigned char next_char = ' ';
1826
1827         for (pos_type i = pos + 1, end = size(); i < end; ++i) {
1828                 unsigned char const par_char = getChar(i);
1829                 if (!Encodings::IsComposeChar_arabic(par_char)) {
1830                         next_char = par_char;
1831                         break;
1832                 }
1833         }
1834
1835         if (Encodings::is_arabic(next_char)) {
1836                 if (Encodings::is_arabic(prev_char) &&
1837                         !Encodings::is_arabic_special(prev_char))
1838                         return Encodings::TransformChar(c, Encodings::FORM_MEDIAL);
1839                 else
1840                         return Encodings::TransformChar(c, Encodings::FORM_INITIAL);
1841         } else {
1842                 if (Encodings::is_arabic(prev_char) &&
1843                         !Encodings::is_arabic_special(prev_char))
1844                         return Encodings::TransformChar(c, Encodings::FORM_FINAL);
1845                 else
1846                         return Encodings::TransformChar(c, Encodings::FORM_ISOLATED);
1847         }
1848 }
1849
1850
1851 void Paragraph::dump() const
1852 {
1853         lyxerr << "Paragraph::dump: rows.size(): " << rows_.size() << endl;
1854         for (size_t i = 0; i != rows_.size(); ++i) {
1855                 lyxerr << "  row " << i << ":   ";
1856                 rows_[i].dump();
1857         }
1858 }