src/paragraph_pimpl.C

   1 /* This file is part of
   2  * ======================================================
   3  *
   4  *           LyX, The Document Processor
   5  *
   6  *           Copyright 1995 Matthias Ettrich
   7  *           Copyright 1995-2001 The LyX Team.
   8  *
   9  * ====================================================== */
  10
  11 #include <config.h>
  12
  13 #include "paragraph_pimpl.h"
  14 #include "LaTeXFeatures.h"
  15 #include "texrow.h"
  16 #include "language.h"
  17 #include "bufferparams.h"
  18 #include "encoding.h"
  19 #include "lyxrc.h"
  20 #include "debug.h"
  21 #include "paragraph_funcs.h"
  22
  23 #include "support/LAssert.h"
  24
  25 using lyx::pos_type;
  26 using std::endl;
  27 using std::ostream;
  28 using std::upper_bound;
  29 using std::lower_bound;
  30
  31 // Initialize static member.
  32 ShareContainer<LyXFont> Paragraph::Pimpl::FontTable::container;
  33 // Initialization of the counter for the paragraph id's,
  34 unsigned int Paragraph::Pimpl::paragraph_id = 0;
  35
  36 namespace {
  37
  38 struct special_phrase {
  39         string phrase;
  40         string macro;
  41         bool builtin;
  42 };
  43
  44 special_phrase special_phrases[] = {
  45         { "LyX", "\\LyX{}", false },
  46         { "TeX", "\\TeX{}", true },
  47         { "LaTeX2e", "\\LaTeXe{}", true },
  48         { "LaTeX", "\\LaTeX{}", true },
  49 };
  50
  51 size_t const phrases_nr = sizeof(special_phrases)/sizeof(special_phrase);
  52
  53 } // namespace anon
  54
  55
  56 Paragraph::Pimpl::Pimpl(Paragraph * owner)
  57         : owner_(owner)
  58 {
  59         inset_owner = 0;
  60         id_ = paragraph_id++;
  61 }
  62
  63
  64 Paragraph::Pimpl::Pimpl(Pimpl const & p, Paragraph * owner, bool same_ids)
  65         : params(p.params), owner_(owner)
  66 {
  67         inset_owner = p.inset_owner;
  68         text = p.text;
  69         fontlist = p.fontlist;
  70         if (same_ids)
  71                 id_ = p.id_;
  72         else
  73                 id_ = paragraph_id++;
  74
  75         if (p.tracking())
  76                 changes_.reset(new Changes(*p.changes_.get()));
  77 }
  78
  79
  80 void Paragraph::Pimpl::clear()
  81 {
  82         text.clear();
  83 #warning changes ?
  84 }
  85
  86
  87 void Paragraph::Pimpl::setContentsFromPar(Paragraph const & par)
  88 {
  89         text = par.pimpl_->text;
  90         if (par.pimpl_->tracking()) {
  91                 changes_.reset(new Changes(*(par.pimpl_->changes_.get())));
  92         }
  93 }
  94
  95
  96 void Paragraph::Pimpl::trackChanges(Change::Type type)
  97 {
  98         if (tracking()) {
  99                 lyxerr[Debug::CHANGES] << "already tracking for par " << id_ << endl;
 100                 return;
 101         }
 102
 103         lyxerr[Debug::CHANGES] << "track changes for par "
 104                 << id_ << " type " << type << endl;
 105         changes_.reset(new Changes(type));
 106         changes_->set(type, 0, size());
 107 }
 108
 109
 110 void Paragraph::Pimpl::untrackChanges()
 111 {
 112         changes_.reset(0);
 113 }
 114
 115
 116 void Paragraph::Pimpl::cleanChanges()
 117 {
 118         // if we're not tracking, we don't want to reset...
 119         if (!tracking())
 120                 return;
 121
 122         changes_.reset(new Changes(Change::INSERTED));
 123         changes_->set(Change::INSERTED, 0, size());
 124 }
 125
 126
 127 bool Paragraph::Pimpl::isChanged(pos_type start, pos_type end) const
 128 {
 129         if (!tracking())
 130                 return false;
 131
 132         return changes_->isChange(start, end);
 133 }
 134
 135
 136 bool Paragraph::Pimpl::isChangeEdited(pos_type start, pos_type end) const
 137 {
 138         if (!tracking())
 139                 return false;
 140
 141         return changes_->isChangeEdited(start, end);
 142 }
 143
 144
 145 void Paragraph::Pimpl::setChange(pos_type pos, Change::Type type)
 146 {
 147         if (!tracking())
 148                 return;
 149
 150         changes_->set(type, pos);
 151 }
 152
 153
 154 Change::Type Paragraph::Pimpl::lookupChange(pos_type pos) const
 155 {
 156         if (!tracking())
 157                 return Change::UNCHANGED;
 158
 159         return changes_->lookup(pos);
 160 }
 161
 162
 163 Change const Paragraph::Pimpl::lookupChangeFull(pos_type pos) const
 164 {
 165         if (!tracking())
 166                 return Change(Change::UNCHANGED);
 167
 168         return changes_->lookupFull(pos);
 169 }
 170
 171
 172 void Paragraph::Pimpl::markErased()
 173 {
 174         lyx::Assert(tracking());
 175
 176         // FIXME: we should actually remove INSERTED chars.
 177         // difficult because owning insettexts/tabulars need
 178         // to update themselves when rows etc. change
 179         changes_->set(Change::DELETED, 0, size());
 180         changes_->reset(Change::DELETED);
 181 }
 182
 183
 184 void Paragraph::Pimpl::acceptChange(pos_type start, pos_type end)
 185 {
 186         if (!tracking())
 187                 return;
 188
 189         if (!size()) {
 190                 changes_.reset(new Changes(Change::UNCHANGED));
 191                 return;
 192         }
 193
 194         lyxerr << "acceptchange" << endl;
 195         pos_type i = start;
 196
 197         for (; i < end; ++i) {
 198                 switch (lookupChange(i)) {
 199                         case Change::UNCHANGED:
 200                                 break;
 201
 202                         case Change::INSERTED:
 203                                 changes_->set(Change::UNCHANGED, i);
 204                                 break;
 205
 206                         case Change::DELETED:
 207                                 eraseIntern(i);
 208                                 changes_->erase(i);
 209                                 --end;
 210                                 --i;
 211                                 break;
 212                 }
 213         }
 214
 215         lyxerr << "endacceptchange" << endl;
 216         changes_->reset(Change::UNCHANGED);
 217 }
 218
 219
 220 void Paragraph::Pimpl::rejectChange(pos_type start, pos_type end)
 221 {
 222         if (!tracking())
 223                 return;
 224
 225         if (!size()) {
 226                 changes_.reset(new Changes(Change::UNCHANGED));
 227                 return;
 228         }
 229
 230         pos_type i = start;
 231
 232         for (; i < end; ++i) {
 233                 switch (lookupChange(i)) {
 234                         case Change::UNCHANGED:
 235                                 break;
 236
 237                         case Change::INSERTED:
 238                                 eraseIntern(i);
 239                                 changes_->erase(i);
 240                                 --end;
 241                                 --i;
 242                                 break;
 243
 244                         case Change::DELETED:
 245                                 changes_->set(Change::UNCHANGED, i);
 246                                 break;
 247                 }
 248         }
 249         changes_->reset(Change::UNCHANGED);
 250 }
 251
 252
 253 Paragraph::value_type Paragraph::Pimpl::getChar(pos_type pos) const
 254 {
 255 #if 1
 256         // This is in the critical path for loading!
 257         pos_type const siz = size();
 258
 259         lyx::Assert(pos <= siz);
 260
 261         if (pos == siz) {
 262                 lyxerr << "getChar() on pos " << pos << " in par id "
 263                        << owner_->id() << " of size " << siz
 264                        << "  is a bit silly !" << endl;
 265                 return '\0';
 266         }
 267
 268         return text[pos];
 269 #else
 270         lyx::Assert(pos < size());
 271         return text[pos];
 272 #endif
 273 }
 274
 275
 276 void Paragraph::Pimpl::setChar(pos_type pos, value_type c)
 277 {
 278 #warning changes
 279         text[pos] = c;
 280 }
 281
 282
 283 void Paragraph::Pimpl::insertChar(pos_type pos, value_type c,
 284                                   LyXFont const & font, Change change)
 285 {
 286         lyx::Assert(pos <= size());
 287
 288         if (tracking()) {
 289                 changes_->record(change, pos);
 290         }
 291
 292         // This is actually very common when parsing buffers (and
 293         // maybe inserting ascii text)
 294         if (pos == size()) {
 295                 // when appending characters, no need to update tables
 296                 text.push_back(c);
 297                 owner_->setFont(pos, font);
 298                 return;
 299         }
 300
 301         text.insert(text.begin() + pos, c);
 302
 303         // Update the font table.
 304         FontTable search_font(pos, LyXFont());
 305         for (FontList::iterator it = lower_bound(fontlist.begin(),
 306                                                       fontlist.end(),
 307                                                       search_font, matchFT());
 308              it != fontlist.end(); ++it)
 309         {
 310                 it->pos(it->pos() + 1);
 311         }
 312
 313         // Update the insets
 314         owner_->insetlist.increasePosAfterPos(pos);
 315
 316         owner_->setFont(pos, font);
 317 }
 318
 319
 320 void Paragraph::Pimpl::insertInset(pos_type pos,
 321                                    Inset * inset, LyXFont const & font, Change change)
 322 {
 323         lyx::Assert(inset);
 324         lyx::Assert(pos <= size());
 325
 326         insertChar(pos, META_INSET, font, change);
 327         lyx::Assert(text[pos] == META_INSET);
 328
 329         // Add a new entry in the insetlist.
 330         owner_->insetlist.insert(inset, pos);
 331         inset->parOwner(owner_);
 332
 333         if (inset_owner)
 334                 inset->setOwner(inset_owner);
 335 }
 336
 337
 338 bool Paragraph::Pimpl::erasePos(pos_type pos)
 339 {
 340         lyx::Assert(pos < size());
 341
 342         if (tracking()) {
 343                 Change::Type changetype(changes_->lookup(pos));
 344                 changes_->record(Change(Change::DELETED), pos);
 345
 346                 // only allow the actual removal if it was /new/ text
 347                 if (changetype != Change::INSERTED) {
 348                         if (text[pos] == Paragraph::META_INSET) {
 349                                 Inset * i(owner_->getInset(pos));
 350                                 i->markErased();
 351                         }
 352                         return false;
 353                 }
 354         }
 355
 356         eraseIntern(pos);
 357         return true;
 358 }
 359
 360
 361 void Paragraph::Pimpl::eraseIntern(pos_type pos)
 362 {
 363         // if it is an inset, delete the inset entry
 364         if (text[pos] == Paragraph::META_INSET) {
 365                 owner_->insetlist.erase(pos);
 366         }
 367
 368         text.erase(text.begin() + pos);
 369
 370         // Erase entries in the tables.
 371         FontTable search_font(pos, LyXFont());
 372
 373         FontList::iterator it =
 374                 lower_bound(fontlist.begin(),
 375                             fontlist.end(),
 376                             search_font, matchFT());
 377         if (it != fontlist.end() && it->pos() == pos &&
 378             (pos == 0 ||
 379              (it != fontlist.begin()
 380               && boost::prior(it)->pos() == pos - 1))) {
 381                 // If it is a multi-character font
 382                 // entry, we just make it smaller
 383                 // (see update below), otherwise we
 384                 // should delete it.
 385                 unsigned int const i = it - fontlist.begin();
 386                 fontlist.erase(fontlist.begin() + i);
 387                 it = fontlist.begin() + i;
 388                 if (i > 0 && i < fontlist.size() &&
 389                     fontlist[i - 1].font() == fontlist[i].font()) {
 390                         fontlist.erase(fontlist.begin() + i - 1);
 391                         it = fontlist.begin() + i - 1;
 392                 }
 393         }
 394
 395         // Update all other entries.
 396         FontList::iterator fend = fontlist.end();
 397         for (; it != fend; ++it)
 398                 it->pos(it->pos() - 1);
 399
 400         // Update the insetlist.
 401         owner_->insetlist.decreasePosAfterPos(pos);
 402 }
 403
 404
 405 void Paragraph::Pimpl::erase(pos_type pos)
 406 {
 407         erasePos(pos);
 408 }
 409
 410
 411 int Paragraph::Pimpl::erase(pos_type start, pos_type end)
 412 {
 413         pos_type i = start;
 414         pos_type count = end - start;
 415         while (count) {
 416                 if (!erasePos(i)) {
 417                         ++i;
 418                 }
 419                 --count;
 420         }
 421         return end - i;
 422 }
 423
 424
 425 void Paragraph::Pimpl::simpleTeXBlanks(ostream & os, TexRow & texrow,
 426                                        pos_type const i,
 427                                        unsigned int & column,
 428                                        LyXFont const & font,
 429                                        LyXLayout const & style)
 430 {
 431         if (style.pass_thru)
 432                 return;
 433
 434         if (column > lyxrc.ascii_linelen
 435             && i
 436             && getChar(i - 1) != ' '
 437             && (i < size() - 1)
 438             // same in FreeSpacing mode
 439             && !style.free_spacing
 440                 && !owner_->isFreeSpacing()
 441             // In typewriter mode, we want to avoid
 442             // ! . ? : at the end of a line
 443             && !(font.family() == LyXFont::TYPEWRITER_FAMILY
 444                  && (getChar(i - 1) == '.'
 445                      || getChar(i - 1) == '?'
 446                      || getChar(i - 1) == ':'
 447                      || getChar(i - 1) == '!'))) {
 448                 os << '\n';
 449                 texrow.newline();
 450                 texrow.start(owner_, i + 1);
 451                 column = 0;
 452         } else if (style.free_spacing) {
 453                 os << '~';
 454         } else {
 455                 os << ' ';
 456         }
 457 }
 458
 459
 460 bool Paragraph::Pimpl::isTextAt(string const & str, pos_type pos) const
 461 {
 462         pos_type const len = str.length();
 463
 464         // is the paragraph large enough?
 465         if (pos + len > size())
 466                 return false;
 467
 468         // does the wanted text start at point?
 469         for (string::size_type i = 0; i < str.length(); ++i) {
 470                 if (str[i] != text[pos + i])
 471                         return false;
 472         }
 473
 474         // is there a font change in middle of the word?
 475         FontList::const_iterator cit = fontlist.begin();
 476         FontList::const_iterator end = fontlist.end();
 477         for (; cit != end; ++cit) {
 478                 if (cit->pos() >= pos)
 479                         break;
 480         }
 481         if (cit != end && pos + len - 1 > cit->pos())
 482                 return false;
 483
 484         return true;
 485 }
 486
 487
 488 void Paragraph::Pimpl::simpleTeXSpecialChars(Buffer const * buf,
 489                                              BufferParams const & bparams,
 490                                              ostream & os,
 491                                              TexRow & texrow,
 492                                              bool moving_arg,
 493                                              LyXFont & font,
 494                                              LyXFont & running_font,
 495                                              LyXFont & basefont,
 496                                              LyXFont const & outerfont,
 497                                              bool & open_font,
 498                                              Change::Type & running_change,
 499                                              LyXLayout const & style,
 500                                              pos_type & i,
 501                                              unsigned int & column,
 502                                              value_type const c)
 503 {
 504         if (style.pass_thru) {
 505                 if (c != Paragraph::META_INSET) {
 506                         if (c != '\0')
 507                                 os << c;
 508                 } else {
 509                         Inset const * inset = owner_->getInset(i);
 510                         inset->ascii(buf, os, 0);
 511                 }
 512                 return;
 513         }
 514
 515         // Two major modes:  LaTeX or plain
 516         // Handle here those cases common to both modes
 517         // and then split to handle the two modes separately.
 518         switch (c) {
 519         case Paragraph::META_INSET: {
 520                 Inset * inset = owner_->getInset(i);
 521
 522                 // FIXME: remove this check
 523                 if (!inset)
 524                         break;
 525
 526                 // FIXME: move this to InsetNewline::latex
 527                 if (inset->lyxCode() == Inset::NEWLINE_CODE) {
 528                         // newlines are handled differently here than
 529                         // the default in simpleTeXSpecialChars().
 530                         if (!style.newline_allowed) {
 531                                 os << '\n';
 532                         } else {
 533                                 if (open_font) {
 534                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
 535                                         open_font = false;
 536                                 }
 537                                 basefont = owner_->getLayoutFont(bparams, outerfont);
 538                                 running_font = basefont;
 539
 540                                 if (font.family() == LyXFont::TYPEWRITER_FAMILY)
 541                                         os << '~';
 542
 543                                 if (moving_arg)
 544                                         os << "\\protect ";
 545
 546                                 os << "\\\\\n";
 547                         }
 548                         texrow.newline();
 549                         texrow.start(owner_, i + 1);
 550                         column = 0;
 551                         break;
 552                 }
 553
 554                 if (inset->isTextInset()) {
 555                         column += Changes::latexMarkChange(os, running_change,
 556                                 Change::UNCHANGED);
 557                         running_change = Change::UNCHANGED;
 558                 }
 559
 560                 bool close = false;
 561                 int const len = os.tellp();
 562                 //ostream::pos_type const len = os.tellp();
 563                 if ((inset->lyxCode() == Inset::GRAPHICS_CODE
 564                      || inset->lyxCode() == Inset::MATH_CODE
 565                      || inset->lyxCode() == Inset::URL_CODE)
 566                     && running_font.isRightToLeft()) {
 567                         os << "\\L{";
 568                         close = true;
 569                 }
 570
 571 #ifdef WITH_WARNINGS
 572 #warning Bug: we can have an empty font change here!
 573 // if there has just been a font change, we are going to close it
 574 // right now, which means stupid latex code like \textsf{}. AFAIK,
 575 // this does not harm dvi output. A minor bug, thus (JMarc)
 576 #endif
 577                 // some insets cannot be inside a font change command
 578                 if (open_font && inset->noFontChange()) {
 579                         column +=running_font.
 580                                 latexWriteEndChanges(os,
 581                                                      basefont,
 582                                                      basefont);
 583                         open_font = false;
 584                         basefont = owner_->getLayoutFont(bparams, outerfont);
 585                         running_font = basefont;
 586                 }
 587
 588                 int tmp = inset->latex(buf, os, moving_arg,
 589                                        style.free_spacing);
 590
 591                 if (close)
 592                         os << '}';
 593
 594                 if (tmp) {
 595                         for (int j = 0; j < tmp; ++j) {
 596                                 texrow.newline();
 597                         }
 598                         texrow.start(owner_, i + 1);
 599                         column = 0;
 600                 } else {
 601                         column += int(os.tellp()) - len;
 602                 }
 603         }
 604         break;
 605
 606         default:
 607                 // And now for the special cases within each mode
 608
 609                 switch (c) {
 610                 case '\\':
 611                         os << "\\textbackslash{}";
 612                         column += 15;
 613                         break;
 614
 615                 case '±': case '²': case '³':
 616                 case '×': case '÷': case '¹':
 617                 case '¬': case 'µ':
 618                         if ((bparams.inputenc == "latin1" ||
 619                              bparams.inputenc == "latin9") ||
 620                             (bparams.inputenc == "auto" &&
 621                              (font.language()->encoding()->LatexName()
 622                               == "latin1" ||
 623                               font.language()->encoding()->LatexName()
 624                               == "latin9"))) {
 625                                 os << "\\ensuremath{"
 626                                    << c
 627                                    << '}';
 628                                 column += 13;
 629                         } else {
 630                                 os << c;
 631                         }
 632                         break;
 633
 634                 case '|': case '<': case '>':
 635                         // In T1 encoding, these characters exist
 636                         if (lyxrc.fontenc == "T1") {
 637                                 os << c;
 638                                 //... but we should avoid ligatures
 639                                 if ((c == '>' || c == '<')
 640                                     && i <= size() - 2
 641                                     && getChar(i + 1) == c) {
 642                                         //os << "\\textcompwordmark{}";
 643                                         // Jean-Marc, have a look at
 644                                         // this. I think this works
 645                                         // equally well:
 646                                         os << "\\,{}";
 647                                         // Lgb
 648                                         column += 19;
 649                                 }
 650                                 break;
 651                         }
 652                         // Typewriter font also has them
 653                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 654                                 os << c;
 655                                 break;
 656                         }
 657                         // Otherwise, we use what LaTeX
 658                         // provides us.
 659                         switch (c) {
 660                         case '<':
 661                                 os << "\\textless{}";
 662                                 column += 10;
 663                                 break;
 664                         case '>':
 665                                 os << "\\textgreater{}";
 666                                 column += 13;
 667                                 break;
 668                         case '|':
 669                                 os << "\\textbar{}";
 670                                 column += 9;
 671                                 break;
 672                         }
 673                         break;
 674
 675                 case '-': // "--" in Typewriter mode -> "-{}-"
 676                         if (i <= size() - 2
 677                             && getChar(i + 1) == '-'
 678                             && font.family() == LyXFont::TYPEWRITER_FAMILY) {
 679                                 os << "-{}";
 680                                 column += 2;
 681                         } else {
 682                                 os << '-';
 683                         }
 684                         break;
 685
 686                 case '\"':
 687                         os << "\\char`\\\"{}";
 688                         column += 9;
 689                         break;
 690
 691                 case '£':
 692                         if (bparams.inputenc == "default") {
 693                                 os << "\\pounds{}";
 694                                 column += 8;
 695                         } else {
 696                                 os << c;
 697                         }
 698                         break;
 699
 700                 case '$': case '&':
 701                 case '%': case '#': case '{':
 702                 case '}': case '_':
 703                         os << '\\' << c;
 704                         column += 1;
 705                         break;
 706
 707                 case '~':
 708                         os << "\\textasciitilde{}";
 709                         column += 16;
 710                         break;
 711
 712                 case '^':
 713                         os << "\\textasciicircum{}";
 714                         column += 17;
 715                         break;
 716
 717                 case '*': case '[': case ']':
 718                         // avoid being mistaken for optional arguments
 719                         os << '{' << c << '}';
 720                         column += 2;
 721                         break;
 722
 723                 case ' ':
 724                         // Blanks are printed before font switching.
 725                         // Sure? I am not! (try nice-latex)
 726                         // I am sure it's correct. LyX might be smarter
 727                         // in the future, but for now, nothing wrong is
 728                         // written. (Asger)
 729                         break;
 730
 731                 default:
 732
 733                         // I assume this is hack treating typewriter as verbatim
 734                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 735                                 if (c != '\0') {
 736                                         os << c;
 737                                 }
 738                                 break;
 739                         }
 740
 741                         // LyX, LaTeX etc.
 742
 743                         // FIXME: if we have "LaTeX" with a font
 744                         // change in the middle (before the 'T', then
 745                         // the "TeX" part is still special cased.
 746                         // Really we should only operate this on
 747                         // "words" for some definition of word
 748
 749                         size_t pnr = 0;
 750
 751                         for (; pnr < phrases_nr; ++pnr) {
 752                                 if (isTextAt(special_phrases[pnr].phrase, i)) {
 753                                         os << special_phrases[pnr].macro;
 754                                         i += special_phrases[pnr].phrase.length() - 1;
 755                                         column += special_phrases[pnr].macro.length() - 1;
 756                                         break;
 757                                 }
 758                         }
 759
 760                         if (pnr == phrases_nr && c != '\0') {
 761                                 os << c;
 762                         }
 763                         break;
 764                 }
 765         }
 766 }
 767
 768
 769 void Paragraph::Pimpl::validate(LaTeXFeatures & features,
 770                                 LyXLayout const & layout) const
 771 {
 772         BufferParams const & bparams = features.bufferParams();
 773
 774         // check the params.
 775         if (params.lineTop() || params.lineBottom())
 776                 features.require("lyxline");
 777         if (!params.spacing().isDefault())
 778                 features.require("setspace");
 779
 780         // then the layouts
 781         features.useLayout(layout.name());
 782
 783         // then the fonts
 784         Language const * doc_language = bparams.language;
 785
 786         FontList::const_iterator fcit = fontlist.begin();
 787         FontList::const_iterator fend = fontlist.end();
 788         for (; fcit != fend; ++fcit) {
 789                 if (fcit->font().noun() == LyXFont::ON) {
 790                         lyxerr[Debug::LATEX] << "font.noun: "
 791                                              << fcit->font().noun()
 792                                              << endl;
 793                         features.require("noun");
 794                         lyxerr[Debug::LATEX] << "Noun enabled. Font: "
 795                                              << fcit->font().stateText(0)
 796                                              << endl;
 797                 }
 798                 switch (fcit->font().color()) {
 799                 case LColor::none:
 800                 case LColor::inherit:
 801                 case LColor::ignore:
 802                         // probably we should put here all interface colors used for
 803                         // font displaying! For now I just add this ones I know of (Jug)
 804                 case LColor::latex:
 805                 case LColor::note:
 806                         break;
 807                 default:
 808                         features.require("color");
 809                         lyxerr[Debug::LATEX] << "Color enabled. Font: "
 810                                              << fcit->font().stateText(0)
 811                                              << endl;
 812                 }
 813
 814                 Language const * language = fcit->font().language();
 815                 if (language->babel() != doc_language->babel() &&
 816                     language != ignore_language &&
 817                     language != latex_language)
 818                 {
 819                         features.useLanguage(language);
 820                         lyxerr[Debug::LATEX] << "Found language "
 821                                              << language->babel() << endl;
 822                 }
 823         }
 824
 825         if (!params.leftIndent().zero())
 826                 features.require("ParagraphLeftIndent");
 827
 828         // then the insets
 829         InsetList::iterator icit = owner_->insetlist.begin();
 830         InsetList::iterator iend = owner_->insetlist.end();
 831         for (; icit != iend; ++icit) {
 832                 if (icit.getInset()) {
 833                         icit.getInset()->validate(features);
 834                         if (layout.needprotect &&
 835                             icit.getInset()->lyxCode() == Inset::FOOT_CODE)
 836                                 features.require("NeedLyXFootnoteCode");
 837                 }
 838         }
 839
 840         // then the contents
 841         for (pos_type i = 0; i < size() ; ++i) {
 842                 for (size_t pnr = 0; pnr < phrases_nr; ++pnr) {
 843                         if (!special_phrases[pnr].builtin
 844                             && isTextAt(special_phrases[pnr].phrase, i)) {
 845                                 features.require(special_phrases[pnr].phrase);
 846                                 break;
 847                         }
 848                 }
 849         }
 850 }