src/output_xhtml.cpp

   1 /**
   2  * \file output_xhtml.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Richard Heck
   7  *
   8  * This code is based upon output_docbook.cpp
   9  *
  10  * Full author contact details are available in file CREDITS.
  11  */
  12
  13 #include <config.h>
  14
  15 #include "output_xhtml.h"
  16
  17 #include "Buffer.h"
  18 #include "buffer_funcs.h"
  19 #include "BufferParams.h"
  20 #include "Counters.h"
  21 #include "Font.h"
  22 #include "Layout.h"
  23 #include "OutputParams.h"
  24 #include "Paragraph.h"
  25 #include "ParagraphList.h"
  26 #include "ParagraphParameters.h"
  27 #include "sgml.h"
  28 #include "Text.h"
  29 #include "TextClass.h"
  30
  31 #include "support/convert.h"
  32 #include "support/debug.h"
  33 #include "support/lassert.h"
  34 #include "support/lstrings.h"
  35 #include "support/textutils.h"
  36
  37 #include <vector>
  38
  39 using namespace std;
  40 using namespace lyx::support;
  41
  42 namespace lyx {
  43
  44 namespace html {
  45
  46 docstring escapeChar(char_type c, XHTMLStream::EscapeSettings e)
  47 {
  48         docstring str;
  49         switch (e) {
  50         case XHTMLStream::ESCAPE_NONE:
  51                 str += c;
  52                 break;
  53         case XHTMLStream::ESCAPE_ALL:
  54                 if (c == '<') {
  55                         str += "&lt;";
  56                         break;
  57                 } else if (c == '>') {
  58                         str += "&gt;";
  59                         break;
  60                 }
  61         // fall through
  62         case XHTMLStream::ESCAPE_AND:
  63                 if (c == '&')
  64                         str += "&amp;";
  65                 else
  66                         str     +=c ;
  67                 break;
  68         }
  69         return str;
  70 }
  71
  72
  73 // escape what needs escaping
  74 docstring htmlize(docstring const & str, XHTMLStream::EscapeSettings e) {
  75         odocstringstream d;
  76         docstring::const_iterator it = str.begin();
  77         docstring::const_iterator en = str.end();
  78         for (; it != en; ++it)
  79                 d << escapeChar(*it, e);
  80         return d.str();
  81 }
  82
  83
  84 string escapeChar(char c, XHTMLStream::EscapeSettings e)
  85 {
  86         string str;
  87         switch (e) {
  88         case XHTMLStream::ESCAPE_NONE:
  89                 str += c;
  90                 break;
  91         case XHTMLStream::ESCAPE_ALL:
  92                 if (c == '<') {
  93                         str += "&lt;";
  94                         break;
  95                 } else if (c == '>') {
  96                         str += "&gt;";
  97                         break;
  98                 }
  99         // fall through
 100         case XHTMLStream::ESCAPE_AND:
 101                 if (c == '&')
 102                         str += "&amp;";
 103                 else
 104                         str     +=c ;
 105                 break;
 106         }
 107         return str;
 108 }
 109
 110
 111 // escape what needs escaping
 112 string htmlize(string const & str, XHTMLStream::EscapeSettings e) {
 113         ostringstream d;
 114         string::const_iterator it = str.begin();
 115         string::const_iterator en = str.end();
 116         for (; it != en; ++it)
 117                 d << escapeChar(*it, e);
 118         return d.str();
 119 }
 120
 121
 122 string cleanAttr(string const & str)
 123 {
 124         string newname;
 125         string::const_iterator it = str.begin();
 126         string::const_iterator en = str.end();
 127         for (; it != en; ++it)
 128                 newname += isalnum(*it) ? *it : '_';
 129         return newname;
 130 }
 131
 132
 133 docstring cleanAttr(docstring const & str)
 134 {
 135         docstring newname;
 136         docstring::const_iterator it = str.begin();
 137         docstring::const_iterator en = str.end();
 138         for (; it != en; ++it) {
 139                 char_type const c = *it;
 140                 newname += isAlnumASCII(c) ? c : char_type('_');
 141         }
 142         return newname;
 143 }
 144
 145
 146 bool isFontTag(string const & s)
 147 {
 148         return s == "em" || s == "strong"; // others?
 149 }
 150
 151
 152 docstring StartTag::asTag() const
 153 {
 154         string output = "<" + tag_;
 155         if (!attr_.empty())
 156                 output += " " + html::htmlize(attr_, XHTMLStream::ESCAPE_NONE);
 157         output += ">";
 158         return from_utf8(output);
 159 }
 160
 161
 162 docstring StartTag::asEndTag() const
 163 {
 164         string output = "</" + tag_ + ">";
 165         return from_utf8(output);
 166 }
 167
 168
 169 docstring EndTag::asEndTag() const
 170 {
 171         string output = "</" + tag_ + ">";
 172         return from_utf8(output);
 173 }
 174
 175
 176 docstring CompTag::asTag() const
 177 {
 178         string output = "<" + tag_;
 179         if (!attr_.empty())
 180                 output += " " + html::htmlize(attr_, XHTMLStream::ESCAPE_NONE);
 181         output += " />";
 182         return from_utf8(output);
 183 }
 184
 185 } // namespace html
 186
 187
 188
 189 ////////////////////////////////////////////////////////////////
 190 ///
 191 /// XHTMLStream
 192 ///
 193 ////////////////////////////////////////////////////////////////
 194
 195 XHTMLStream::XHTMLStream(odocstream & os)
 196                 : os_(os), escape_(ESCAPE_ALL)
 197 {}
 198
 199
 200 void XHTMLStream::writeError(std::string const & s)
 201 {
 202         LYXERR0(s);
 203         os_ << from_utf8("<!-- Output Error: " + s + " -->");
 204 }
 205
 206
 207 bool XHTMLStream::closeFontTags()
 208 {
 209         if (tag_stack_.empty())
 210                 return true;
 211         // first, we close any open font tags we can close
 212         html::StartTag curtag = tag_stack_.back();
 213         while (html::isFontTag(curtag.tag_)) {
 214                 os_ << curtag.asEndTag();
 215                 tag_stack_.pop_back();
 216                 if (tag_stack_.empty())
 217                         // this probably shouldn't happen, since then the
 218                         // font tags weren't in any other tag. but that
 219                         // problem will likely be caught elsewhere.
 220                         return true;
 221                 curtag = tag_stack_.back();
 222         }
 223         // so we've hit a non-font tag. let's see if any of the
 224         // remaining tags are font tags.
 225         TagStack::const_iterator it = tag_stack_.begin();
 226         TagStack::const_iterator en = tag_stack_.end();
 227         bool noFontTags = true;
 228         for (; it != en; ++it) {
 229                 if (html::isFontTag(it->tag_)) {
 230                         writeError("Font tag `" + it->tag_ + "' still open in closeFontTags().\n"
 231                                 "This is likely not a problem, but you might want to check.");
 232                         noFontTags = false;
 233                 }
 234         }
 235         return noFontTags;
 236 }
 237
 238
 239 void XHTMLStream::clearTagDeque()
 240 {
 241         while (!pending_tags_.empty()) {
 242                 html::StartTag const & tag = pending_tags_.front();
 243                 // tabs?
 244                 os_ << tag.asTag();
 245                 tag_stack_.push_back(tag);
 246                 pending_tags_.pop_front();
 247         }
 248 }
 249
 250
 251 XHTMLStream & XHTMLStream::operator<<(docstring const & d)
 252 {
 253         clearTagDeque();
 254         os_ << html::htmlize(d, escape_);
 255         escape_ = ESCAPE_ALL;
 256         return *this;
 257 }
 258
 259
 260 XHTMLStream & XHTMLStream::operator<<(const char * s)
 261 {
 262         clearTagDeque();
 263         docstring const d = from_ascii(s);
 264         os_ << html::htmlize(d, escape_);
 265         escape_ = ESCAPE_ALL;
 266         return *this;
 267 }
 268
 269
 270 XHTMLStream & XHTMLStream::operator<<(char_type c)
 271 {
 272         clearTagDeque();
 273         os_ << html::escapeChar(c, escape_);
 274         escape_ = ESCAPE_ALL;
 275         return *this;
 276 }
 277
 278
 279 XHTMLStream & XHTMLStream::operator<<(char c)
 280 {
 281         clearTagDeque();
 282         string const d = html::escapeChar(c, escape_);
 283         escape_ = ESCAPE_ALL;
 284         return *this;
 285 }
 286
 287
 288 XHTMLStream & XHTMLStream::operator<<(int i)
 289 {
 290         clearTagDeque();
 291         os_ << i;
 292         escape_ = ESCAPE_ALL;
 293         return *this;
 294 }
 295
 296
 297 XHTMLStream & XHTMLStream::operator<<(EscapeSettings e)
 298 {
 299         escape_ = e;
 300         return *this;
 301 }
 302
 303
 304 XHTMLStream & XHTMLStream::operator<<(html::StartTag const & tag)
 305 {
 306         if (tag.tag_.empty())
 307                 return *this;
 308         pending_tags_.push_back(tag);
 309         if (tag.keepempty_)
 310                 clearTagDeque();
 311         return *this;
 312 }
 313
 314
 315 XHTMLStream & XHTMLStream::operator<<(html::CompTag const & tag)
 316 {
 317         if (tag.tag_.empty())
 318                 return *this;
 319         clearTagDeque();
 320         // tabs?
 321         os_ << tag.asTag();
 322         *this << html::CR();
 323         return *this;
 324 }
 325
 326
 327 XHTMLStream & XHTMLStream::operator<<(html::CR const &)
 328 {
 329         // tabs?
 330         os_ << from_ascii("\n");
 331         return *this;
 332 }
 333
 334
 335 bool XHTMLStream::isTagOpen(string const & stag)
 336 {
 337         TagStack::const_iterator sit = tag_stack_.begin();
 338         TagStack::const_iterator const sen = tag_stack_.end();
 339         for (; sit != sen; ++sit)
 340                 if (sit->tag_ == stag)
 341                         return true;
 342         return false;
 343 }
 344
 345
 346 // this is complicated, because we want to make sure that
 347 // everything is properly nested. the code ought to make
 348 // sure of that, but we won't assert (yet) if we run into
 349 // a problem. we'll just output error messages and try our
 350 // best to make things work.
 351 XHTMLStream & XHTMLStream::operator<<(html::EndTag const & etag)
 352 {
 353         if (etag.tag_.empty())
 354                 return *this;
 355
 356         // make sure there are tags to be closed
 357         if (tag_stack_.empty()) {
 358                 writeError("Tried to close `" + etag.tag_
 359                          + "' when no tags were open!");
 360                 return *this;
 361         }
 362
 363         // first make sure we're not closing an empty tag
 364         if (!pending_tags_.empty()) {
 365                 html::StartTag const & stag = pending_tags_.back();
 366                 if (etag.tag_ == stag.tag_)  {
 367                         // we have <tag></tag>, so we discard it and remove it
 368                         // from the pending_tags_.
 369                         pending_tags_.pop_back();
 370                         return *this;
 371                 }
 372                 // there is a pending tag that isn't the one we are trying
 373                 // to close.
 374                 // is this tag itself pending?
 375                 // non-const iterators because we may call erase().
 376                 TagStack::iterator dit = pending_tags_.begin();
 377                 TagStack::iterator const den = pending_tags_.end();
 378                 for (; dit != den; ++dit) {
 379                         if (dit->tag_ == etag.tag_) {
 380                                 // it was pending, so we just erase it
 381                                 writeError("Tried to close pending tag `" + etag.tag_
 382                                         + "' when other tags were pending. Last pending tag is `"
 383                                         + pending_tags_.back().tag_ + "'. Tag discarded.");
 384                                 pending_tags_.erase(dit);
 385                                 return *this;
 386                         }
 387                 }
 388                 // so etag isn't itself pending. is it even open?
 389                 if (!isTagOpen(etag.tag_)) {
 390                         writeError("Tried to close `" + etag.tag_
 391                                  + "' when tag was not open. Tag discarded.");
 392                         return *this;
 393                 }
 394                 // ok, so etag is open.
 395                 // our strategy will be as below: we will do what we need to
 396                 // do to close this tag.
 397                 string estr = "Closing tag `" + etag.tag_
 398                         + "' when other tags are pending. Discarded pending tags:\n";
 399                 for (dit = pending_tags_.begin(); dit != den; ++dit)
 400                         estr += dit->tag_ + "\n";
 401                 writeError(estr);
 402                 // clear the pending tags...
 403                 pending_tags_.clear();
 404                 // ...and then just fall through.
 405         }
 406
 407         // is the tag we are closing the last one we opened?
 408         if (etag.tag_ == tag_stack_.back().tag_) {
 409                 // output it...
 410                 os_ << etag.asEndTag();
 411                 // ...and forget about it
 412                 tag_stack_.pop_back();
 413                 return *this;
 414         }
 415
 416         // we are trying to close a tag other than the one last opened.
 417         // let's first see if this particular tag is still open somehow.
 418         if (!isTagOpen(etag.tag_)) {
 419                 writeError("Tried to close `" + etag.tag_
 420                         + "' when tag was not open. Tag discarded.");
 421                 return *this;
 422         }
 423
 424         // so the tag was opened, but other tags have been opened since
 425         // and not yet closed.
 426         // if it's a font tag, though...
 427         if (html::isFontTag(etag.tag_)) {
 428                 // it won't be a problem if the other tags open since this one
 429                 // are also font tags.
 430                 TagStack::const_reverse_iterator rit = tag_stack_.rbegin();
 431                 TagStack::const_reverse_iterator ren = tag_stack_.rend();
 432                 for (; rit != ren; ++rit) {
 433                         if (rit->tag_ == etag.tag_)
 434                                 break;
 435                         if (!html::isFontTag(rit->tag_)) {
 436                                 // we'll just leave it and, presumably, have to close it later.
 437                                 writeError("Unable to close font tag `" + etag.tag_
 438                                         + "' due to open non-font tag `" + rit->tag_ + "'.");
 439                                 return *this;
 440                         }
 441                 }
 442
 443                 // so we have e.g.:
 444                 //    <em>this is <strong>bold
 445                 // and are being asked to closed em. we want:
 446                 //    <em>this is <strong>bold</strong></em><strong>
 447                 // first, we close the intervening tags...
 448                 html::StartTag curtag = tag_stack_.back();
 449                 // ...remembering them in a stack.
 450                 TagStack fontstack;
 451                 while (curtag.tag_ != etag.tag_) {
 452                         os_ << curtag.asEndTag();
 453                         fontstack.push_back(curtag);
 454                         tag_stack_.pop_back();
 455                         curtag = tag_stack_.back();
 456                 }
 457                 // now close our tag...
 458                 os_ << etag.asEndTag();
 459                 tag_stack_.pop_back();
 460
 461                 // ...and restore the other tags.
 462                 rit = fontstack.rbegin();
 463                 ren = fontstack.rend();
 464                 for (; rit != ren; ++rit)
 465                         pending_tags_.push_back(*rit);
 466                 return *this;
 467         }
 468
 469         // it wasn't a font tag.
 470         // so other tags were opened before this one and not properly closed.
 471         // so we'll close them, too. that may cause other issues later, but it
 472         // at least guarantees proper nesting.
 473         writeError("Closing tag `" + etag.tag_
 474                 + "' when other tags are open, namely:");
 475         html::StartTag curtag = tag_stack_.back();
 476         while (curtag.tag_ != etag.tag_) {
 477                 writeError(curtag.tag_);
 478                 os_ << curtag.asEndTag();
 479                 tag_stack_.pop_back();
 480                 curtag = tag_stack_.back();
 481         }
 482         // curtag is now the one we actually want.
 483         os_ << curtag.asEndTag();
 484         tag_stack_.pop_back();
 485
 486         return *this;
 487 }
 488
 489 // End code for XHTMLStream
 490
 491 namespace {
 492
 493 // convenience functions
 494
 495 inline void openTag(XHTMLStream & xs, Layout const & lay)
 496 {
 497         xs << html::StartTag(lay.htmltag(), lay.htmlattr());
 498 }
 499
 500
 501 void openTag(XHTMLStream & xs, Layout const & lay,
 502              ParagraphParameters const & params)
 503 {
 504         // FIXME Are there other things we should handle here?
 505         string const align = alignmentToCSS(params.align());
 506         if (align.empty()) {
 507                 openTag(xs, lay);
 508                 return;
 509         }
 510         string attrs = lay.htmlattr() + " style='text-align: " + align + ";'";
 511         xs << html::StartTag(lay.htmltag(), attrs);
 512 }
 513
 514
 515 inline void closeTag(XHTMLStream & xs, Layout const & lay)
 516 {
 517         xs << html::EndTag(lay.htmltag());
 518 }
 519
 520
 521 inline void openLabelTag(XHTMLStream & xs, Layout const & lay)
 522 {
 523         xs << html::StartTag(lay.htmllabeltag(), lay.htmllabelattr());
 524 }
 525
 526
 527 inline void closeLabelTag(XHTMLStream & xs, Layout const & lay)
 528 {
 529         xs << html::EndTag(lay.htmllabeltag());
 530 }
 531
 532
 533 inline void openItemTag(XHTMLStream & xs, Layout const & lay)
 534 {
 535         xs << html::StartTag(lay.htmlitemtag(), lay.htmlitemattr(), true);
 536 }
 537
 538
 539 void openItemTag(XHTMLStream & xs, Layout const & lay,
 540              ParagraphParameters const & params)
 541 {
 542         // FIXME Are there other things we should handle here?
 543         string const align = alignmentToCSS(params.align());
 544         if (align.empty()) {
 545                 openItemTag(xs, lay);
 546                 return;
 547         }
 548         string attrs = lay.htmlattr() + " style='text-align: " + align + ";'";
 549         xs << html::StartTag(lay.htmlitemtag(), attrs);
 550 }
 551
 552
 553 inline void closeItemTag(XHTMLStream & xs, Layout const & lay)
 554 {
 555         xs << html::EndTag(lay.htmlitemtag());
 556 }
 557
 558 // end of convenience functions
 559
 560 ParagraphList::const_iterator searchParagraphHtml(
 561         ParagraphList::const_iterator p,
 562         ParagraphList::const_iterator const & pend)
 563 {
 564         for (++p; p != pend && p->layout().latextype == LATEX_PARAGRAPH; ++p)
 565                 ;
 566
 567         return p;
 568 }
 569
 570
 571 ParagraphList::const_iterator searchEnvironmentHtml(
 572                 ParagraphList::const_iterator const pstart,
 573                 ParagraphList::const_iterator const & pend)
 574 {
 575         ParagraphList::const_iterator p = pstart;
 576         Layout const & bstyle = p->layout();
 577         size_t const depth = p->params().depth();
 578         for (++p; p != pend; ++p) {
 579                 Layout const & style = p->layout();
 580                 // It shouldn't happen that e.g. a section command occurs inside
 581                 // a quotation environment, at a higher depth, but as of 6/2009,
 582                 // it can happen. We pretend that it's just at lowest depth.
 583                 if (style.latextype == LATEX_COMMAND)
 584                         return p;
 585                 // If depth is down, we're done
 586                 if (p->params().depth() < depth)
 587                         return p;
 588                 // If depth is up, we're not done
 589                 if (p->params().depth() > depth)
 590                         continue;
 591                 // Now we know we are at the same depth
 592                 if (style.latextype == LATEX_PARAGRAPH
 593                     || style.latexname() != bstyle.latexname())
 594                         return p;
 595         }
 596         return pend;
 597 }
 598
 599
 600 ParagraphList::const_iterator makeParagraphs(Buffer const & buf,
 601                                             XHTMLStream & xs,
 602                                             OutputParams const & runparams,
 603                                             Text const & text,
 604                                             ParagraphList::const_iterator const & pbegin,
 605                                             ParagraphList::const_iterator const & pend)
 606 {
 607         ParagraphList::const_iterator const begin = text.paragraphs().begin();
 608         ParagraphList::const_iterator par = pbegin;
 609         for (; par != pend; ++par) {
 610                 Layout const & lay = par->layout();
 611                 if (!lay.counter.empty())
 612                         buf.params().documentClass().counters().step(lay.counter, OutputUpdate);
 613                 // FIXME We should see if there's a label to be output and
 614                 // do something with it.
 615                 if (par != pbegin)
 616                         xs << html::CR();
 617
 618                 // If we are already in a paragraph, and this is the first one, then we
 619                 // do not want to open the paragraph tag.
 620                 // we also do not want to open it if the current layout does not permit
 621                 // multiple paragraphs.
 622                 bool const opened = runparams.html_make_pars &&
 623                         (par != pbegin || !runparams.html_in_par);
 624                 if (opened)
 625                         openTag(xs, lay, par->params());
 626                 docstring const deferred =
 627                         par->simpleLyXHTMLOnePar(buf, xs, runparams, text.outerFont(distance(begin, par)));
 628
 629                 // We want to issue the closing tag if either:
 630                 //   (i)  We opened it, and either html_in_par is false,
 631                 //        or we're not in the last paragraph, anyway.
 632                 //   (ii) We didn't open it and html_in_par is true,
 633                 //        but we are in the first par, and there is a next par.
 634                 ParagraphList::const_iterator nextpar = par;
 635                 nextpar++;
 636                 bool const needclose =
 637                         (opened && (!runparams.html_in_par || nextpar != pend))
 638                         || (!opened && runparams.html_in_par && par == pbegin && nextpar != pend);
 639                 if (needclose) {
 640                         closeTag(xs, lay);
 641                         xs << html::CR();
 642                 }
 643                 if (!deferred.empty()) {
 644                         xs << XHTMLStream::ESCAPE_NONE << deferred << html::CR();
 645                 }
 646         }
 647         return pend;
 648 }
 649
 650
 651 ParagraphList::const_iterator makeBibliography(Buffer const & buf,
 652                                 XHTMLStream & xs,
 653                                 OutputParams const & runparams,
 654                                 Text const & text,
 655                                 ParagraphList::const_iterator const & pbegin,
 656                                 ParagraphList::const_iterator const & pend)
 657 {
 658         // FIXME XHTML
 659         // Use TextClass::htmlTOCLayout() to figure out how we should look.
 660         xs << html::StartTag("h2", "class='bibliography'")
 661            << pbegin->layout().labelstring(false);
 662            << html::EndTag("h2");
 663         xs << html::CR();
 664         xs << html::StartTag("div", "class='bibliography'");
 665         xs << html::CR();
 666         makeParagraphs(buf, xs, runparams, text, pbegin, pend);
 667         xs << html::EndTag("div");
 668         return pend;
 669 }
 670
 671
 672 bool isNormalEnv(Layout const & lay)
 673 {
 674         return lay.latextype == LATEX_ENVIRONMENT
 675             || lay.latextype == LATEX_BIB_ENVIRONMENT;
 676 }
 677
 678
 679 ParagraphList::const_iterator makeEnvironmentHtml(Buffer const & buf,
 680                                               XHTMLStream & xs,
 681                                               OutputParams const & runparams,
 682                                               Text const & text,
 683                                               ParagraphList::const_iterator const & pbegin,
 684                                               ParagraphList::const_iterator const & pend)
 685 {
 686         ParagraphList::const_iterator const begin = text.paragraphs().begin();
 687         ParagraphList::const_iterator par = pbegin;
 688         Layout const & bstyle = par->layout();
 689         depth_type const origdepth = pbegin->params().depth();
 690
 691         // open tag for this environment
 692         openTag(xs, bstyle);
 693         xs << html::CR();
 694
 695         // we will on occasion need to remember a layout from before.
 696         Layout const * lastlay = 0;
 697
 698         while (par != pend) {
 699                 Layout const & style = par->layout();
 700                 // the counter only gets stepped if we're in some kind of list,
 701                 // or if it's the first time through.
 702                 // note that enum, etc, are handled automatically.
 703                 // FIXME There may be a bug here about user defined enumeration
 704                 // types. If so, then we'll need to take the counter and add "i",
 705                 // "ii", etc, as with enum.
 706                 Counters & cnts = buf.params().documentClass().counters();
 707                 docstring const & cntr = style.counter;
 708                 if (!style.counter.empty()
 709                     && (par == pbegin || !isNormalEnv(style))
 710                                 && cnts.hasCounter(cntr)
 711                 )
 712                         cnts.step(cntr, OutputUpdate);
 713                 ParagraphList::const_iterator send;
 714                 // this will be positive, if we want to skip the initial word
 715                 // (if it's been taken for the label).
 716                 pos_type sep = 0;
 717
 718                 switch (style.latextype) {
 719                 case LATEX_ENVIRONMENT:
 720                 case LATEX_LIST_ENVIRONMENT:
 721                 case LATEX_ITEM_ENVIRONMENT: {
 722                         // There are two possiblities in this case.
 723                         // One is that we are still in the environment in which we
 724                         // started---which we will be if the depth is the same.
 725                         if (par->params().depth() == origdepth) {
 726                                 LASSERT(bstyle == style, /* */);
 727                                 if (lastlay != 0) {
 728                                         closeItemTag(xs, *lastlay);
 729                                         lastlay = 0;
 730                                 }
 731
 732                                 bool const labelfirst = style.htmllabelfirst();
 733                                 if (!labelfirst)
 734                                         openItemTag(xs, style, par->params());
 735
 736                                 // label output
 737                                 if (style.labeltype != LABEL_NO_LABEL &&
 738                                     style.htmllabeltag() != "NONE") {
 739                                         if (isNormalEnv(style)) {
 740                                                 // in this case, we print the label only for the first
 741                                                 // paragraph (as in a theorem).
 742                                                 if (par == pbegin) {
 743                                                         docstring const lbl =
 744                                                                         pbegin->params().labelString();
 745                                                         if (!lbl.empty()) {
 746                                                                 openLabelTag(xs, style);
 747                                                                 xs << lbl;
 748                                                                 closeLabelTag(xs, style);
 749                                                         }
 750                                                         xs << html::CR();
 751                                                 }
 752                                         }       else { // some kind of list
 753                                                 if (style.labeltype == LABEL_MANUAL) {
 754                                                         openLabelTag(xs, style);
 755                                                         sep = par->firstWordLyXHTML(xs, runparams);
 756                                                         closeLabelTag(xs, style);
 757                                                         xs << html::CR();
 758                                                 }
 759                                                 else {
 760                                                         openLabelTag(xs, style);
 761                                                         xs << par->params().labelString();
 762                                                         closeLabelTag(xs, style);
 763                                                         xs << html::CR();
 764                                                 }
 765                                         }
 766                                 } // end label output
 767
 768                                 if (labelfirst)
 769                                         openItemTag(xs, style, par->params());
 770
 771                                 par->simpleLyXHTMLOnePar(buf, xs, runparams,
 772                                         text.outerFont(distance(begin, par)), sep);
 773                                 ++par;
 774
 775                                 // We may not want to close the tag yet, in particular:
 776                                 // If we're not at the end...
 777                                 if (par != pend
 778                                         //  and are doing items...
 779                                          && !isNormalEnv(style)
 780                                          // and if the depth has changed...
 781                                          && par->params().depth() != origdepth) {
 782                                          // then we'll save this layout for later, and close it when
 783                                          // we get another item.
 784                                         lastlay = &style;
 785                                 } else
 786                                         closeItemTag(xs, style);
 787                                 xs << html::CR();
 788                         }
 789                         // The other possibility is that the depth has increased, in which
 790                         // case we need to recurse.
 791                         else {
 792                                 send = searchEnvironmentHtml(par, pend);
 793                                 par = makeEnvironmentHtml(buf, xs, runparams, text, par, send);
 794                         }
 795                         break;
 796                 }
 797                 case LATEX_PARAGRAPH:
 798                         send = searchParagraphHtml(par, pend);
 799                         par = makeParagraphs(buf, xs, runparams, text, par, send);
 800                         break;
 801                 // Shouldn't happen
 802                 case LATEX_BIB_ENVIRONMENT:
 803                         send = par;
 804                         ++send;
 805                         par = makeParagraphs(buf, xs, runparams, text, par, send);
 806                         break;
 807                 // Shouldn't happen
 808                 case LATEX_COMMAND:
 809                         ++par;
 810                         break;
 811                 }
 812         }
 813
 814         if (lastlay != 0)
 815                 closeItemTag(xs, *lastlay);
 816         closeTag(xs, bstyle);
 817         xs << html::CR();
 818         return pend;
 819 }
 820
 821
 822 void makeCommand(Buffer const & buf,
 823                                           XHTMLStream & xs,
 824                                           OutputParams const & runparams,
 825                                           Text const & text,
 826                                           ParagraphList::const_iterator const & pbegin)
 827 {
 828         Layout const & style = pbegin->layout();
 829         if (!style.counter.empty())
 830                 buf.params().documentClass().counters().step(style.counter, OutputUpdate);
 831
 832         openTag(xs, style, pbegin->params());
 833
 834         // Label around sectioning number:
 835         // FIXME Probably need to account for LABEL_MANUAL
 836         if (style.labeltype != LABEL_NO_LABEL) {
 837                 openLabelTag(xs, style);
 838                 xs << pbegin->params().labelString();
 839                 closeLabelTag(xs, style);
 840                 // Otherwise the label might run together with the text
 841                 xs << from_ascii(" ");
 842         }
 843
 844         ParagraphList::const_iterator const begin = text.paragraphs().begin();
 845         pbegin->simpleLyXHTMLOnePar(buf, xs, runparams,
 846                         text.outerFont(distance(begin, pbegin)));
 847         closeTag(xs, style);
 848         xs << html::CR();
 849 }
 850
 851 } // end anonymous namespace
 852
 853
 854 void xhtmlParagraphs(Text const & text,
 855                        Buffer const & buf,
 856                        XHTMLStream & xs,
 857                        OutputParams const & runparams)
 858 {
 859         ParagraphList const & paragraphs = text.paragraphs();
 860         ParagraphList::const_iterator par = paragraphs.begin();
 861         ParagraphList::const_iterator pend = paragraphs.end();
 862
 863         OutputParams ourparams = runparams;
 864         while (par != pend) {
 865                 if (par->params().startOfAppendix()) {
 866                         // FIXME: only the counter corresponding to toplevel
 867                         // sectioning should be reset
 868                         Counters & cnts = buf.masterBuffer()->params().documentClass().counters();
 869                         cnts.reset();
 870                         cnts.appendix(true);
 871                 }
 872                 Layout const & style = par->layout();
 873                 ParagraphList::const_iterator lastpar = par;
 874                 ParagraphList::const_iterator send;
 875
 876                 switch (style.latextype) {
 877                 case LATEX_COMMAND: {
 878                         // The files with which we are working never have more than
 879                         // one paragraph in a command structure.
 880                         // FIXME
 881                         // if (ourparams.html_in_par)
 882                         //   fix it so we don't get sections inside standard, e.g.
 883                         // note that we may then need to make runparams not const, so we
 884                         // can communicate that back.
 885                         // FIXME Maybe this fix should be in the routines themselves, in case
 886                         // they are called from elsewhere.
 887                         makeCommand(buf, xs, ourparams, text, par);
 888                         ++par;
 889                         break;
 890                 }
 891                 case LATEX_ENVIRONMENT:
 892                 case LATEX_LIST_ENVIRONMENT:
 893                 case LATEX_ITEM_ENVIRONMENT: {
 894                         // FIXME Same fix here.
 895                         send = searchEnvironmentHtml(par, pend);
 896                         par = makeEnvironmentHtml(buf, xs, ourparams, text, par, send);
 897                         break;
 898                 }
 899                 case LATEX_BIB_ENVIRONMENT: {
 900                         // FIXME Same fix here.
 901                         send = searchEnvironmentHtml(par, pend);
 902                         par = makeBibliography(buf, xs, ourparams, text, par, send);
 903                         break;
 904                 }
 905                 case LATEX_PARAGRAPH:
 906                         send = searchParagraphHtml(par, pend);
 907                         par = makeParagraphs(buf, xs, ourparams, text, par, send);
 908                         break;
 909                 }
 910                 // FIXME??
 911                 // makeEnvironment may process more than one paragraphs and bypass pend
 912                 if (distance(lastpar, par) >= distance(lastpar, pend))
 913                         break;
 914         }
 915 }
 916
 917
 918 string alignmentToCSS(LyXAlignment align) {
 919         switch (align) {
 920         case LYX_ALIGN_BLOCK:
 921                 // we are NOT going to use text-align: justify!!
 922         case LYX_ALIGN_LEFT:
 923                 return "left";
 924         case LYX_ALIGN_RIGHT:
 925                 return "right";
 926         case LYX_ALIGN_CENTER:
 927                 return "center";
 928         default:
 929                 break;
 930         }
 931         return "";
 932 }
 933
 934 } // namespace lyx