2 * \file output_latex.cpp
3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
6 * \author Lars Gullik Bjønnes
8 * Full author contact details are available in file CREDITS.
13 #include "output_latex.h"
16 #include "BufferParams.h"
19 #include "InsetList.h"
23 #include "OutputParams.h"
24 #include "Paragraph.h"
25 #include "ParagraphParameters.h"
26 #include "TextClass.h"
28 #include "insets/InsetBibitem.h"
29 #include "insets/InsetArgument.h"
31 #include "support/lassert.h"
32 #include "support/convert.h"
33 #include "support/debug.h"
34 #include "support/lstrings.h"
35 #include "support/lyxalgo.h"
36 #include "support/textutils.h"
38 #include <QThreadStorage>
43 using namespace lyx::support;
59 OutputState() : open_encoding_(none), cjk_inherited_(0),
60 prev_env_language_(0), open_polyglossia_lang_("")
63 OpenEncoding open_encoding_;
65 Language const * prev_env_language_;
66 string open_polyglossia_lang_;
70 OutputState * getOutputState()
72 // FIXME An instance of OutputState should be kept around for each export
73 // instead of using local thread storage
74 static QThreadStorage<OutputState *> outputstate;
75 if (!outputstate.hasLocalData())
76 outputstate.setLocalData(new OutputState);
77 return outputstate.localData();
81 string const getPolyglossiaEnvName(Language const * lang)
83 string result = lang->polyglossia();
84 if (result == "arabic")
85 // exceptional spelling; see polyglossia docs.
91 string const getPolyglossiaBegin(string const & lang_begin_command,
92 string const & lang, string const & opts)
96 result = subst(lang_begin_command, "$$lang", lang);
97 string options = opts.empty() ?
98 string() : "[" + opts + "]";
99 result = subst(result, "$$opts", options);
105 struct TeXEnvironmentData
108 Layout const * style;
109 Language const * par_language;
110 Encoding const * prev_encoding;
111 bool leftindent_open;
115 static TeXEnvironmentData prepareEnvironment(Buffer const & buf,
117 ParagraphList::const_iterator pit,
119 OutputParams const & runparams)
121 TeXEnvironmentData data;
123 BufferParams const & bparams = buf.params();
125 // FIXME This test should not be necessary.
126 // We should perhaps issue an error if it is.
127 Layout const & style = text.inset().forcePlainLayout() ?
128 bparams.documentClass().plainLayout() : pit->layout();
130 ParagraphList const & paragraphs = text.paragraphs();
131 ParagraphList::const_iterator const priorpit =
132 pit == paragraphs.begin() ? pit : prev(pit, 1);
134 OutputState * state = getOutputState();
135 bool const use_prev_env_language = state->prev_env_language_ != 0
136 && priorpit->layout().isEnvironment()
137 && (priorpit->getDepth() > pit->getDepth()
138 || (priorpit->getDepth() == pit->getDepth()
139 && priorpit->layout() != pit->layout()));
141 data.prev_encoding = runparams.encoding;
142 data.par_language = pit->getParLanguage(bparams);
143 Language const * const doc_language = bparams.language;
144 Language const * const prev_par_language =
145 (pit != paragraphs.begin())
146 ? (use_prev_env_language ? state->prev_env_language_
147 : priorpit->getParLanguage(bparams))
150 bool const use_polyglossia = runparams.use_polyglossia;
151 string const par_lang = use_polyglossia ?
152 getPolyglossiaEnvName(data.par_language) : data.par_language->babel();
153 string const prev_par_lang = use_polyglossia ?
154 getPolyglossiaEnvName(prev_par_language) : prev_par_language->babel();
155 string const doc_lang = use_polyglossia ?
156 getPolyglossiaEnvName(doc_language) : doc_language->babel();
157 string const lang_begin_command = use_polyglossia ?
158 "\\begin{$$lang}" : lyxrc.language_command_begin;
159 string const lang_end_command = use_polyglossia ?
160 "\\end{$$lang}" : lyxrc.language_command_end;
162 if (par_lang != prev_par_lang) {
163 if (!lang_end_command.empty() &&
164 prev_par_lang != doc_lang &&
165 !prev_par_lang.empty()) {
166 os << from_ascii(subst(
170 // the '%' is necessary to prevent unwanted whitespace
174 if ((lang_end_command.empty() ||
175 par_lang != doc_lang) &&
177 string bc = use_polyglossia ?
178 getPolyglossiaBegin(lang_begin_command, par_lang,
179 data.par_language->polyglossiaOpts())
180 : subst(lang_begin_command, "$$lang", par_lang);
182 // the '%' is necessary to prevent unwanted whitespace
187 data.leftindent_open = false;
188 if (!pit->params().leftIndent().zero()) {
189 os << "\\begin{LyXParagraphLeftIndent}{"
190 << from_ascii(pit->params().leftIndent().asLatexString())
192 data.leftindent_open = true;
195 if (style.isEnvironment()) {
196 if (par_lang != doc_lang)
197 state->open_polyglossia_lang_ = par_lang;
198 os << "\\begin{" << from_ascii(style.latexname()) << '}';
199 if (!style.latexargs().empty()) {
200 OutputParams rp = runparams;
201 rp.local_font = &pit->getFirstFontSettings(bparams);
202 latexArgInsets(paragraphs, pit, os, rp, style.latexargs());
204 if (style.latextype == LATEX_LIST_ENVIRONMENT) {
206 << pit->params().labelWidthString()
208 } else if (style.labeltype == LABEL_BIBLIO) {
209 if (pit->params().labelWidthString().empty())
210 os << '{' << bibitemWidest(buf, runparams) << "}\n";
213 << pit->params().labelWidthString()
216 os << from_ascii(style.latexparam()) << '\n';
220 // in multilingual environments, the CJK tags have to be nested properly
221 data.cjk_nested = false;
222 if (data.par_language->encoding()->package() == Encoding::CJK &&
223 state->open_encoding_ != CJK && pit->isMultiLingual(bparams)) {
224 if (prev_par_language->encoding()->package() == Encoding::CJK)
225 os << "\\begin{CJK}{" << from_ascii(data.par_language->encoding()->latexName())
226 << "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
227 state->open_encoding_ = CJK;
228 data.cjk_nested = true;
234 static void finishEnvironment(otexstream & os, OutputParams const & runparams,
235 TeXEnvironmentData const & data)
237 OutputState * state = getOutputState();
238 // BufferParams const & bparams = buf.params(); // FIXME: for speedup shortcut below, would require passing of "buf" as argument
239 if (state->open_encoding_ == CJK && data.cjk_nested) {
240 // We need to close the encoding even if it does not change
241 // to do correct environment nesting
242 os << "\\end{CJK}\n";
243 state->open_encoding_ = none;
246 if (data.style->isEnvironment()) {
248 << "\\end{" << from_ascii(data.style->latexname()) << "}\n";
249 state->prev_env_language_ = data.par_language;
250 if (runparams.encoding != data.prev_encoding) {
251 runparams.encoding = data.prev_encoding;
252 os << setEncoding(data.prev_encoding->iconvName());
256 if (data.leftindent_open) {
257 os << breakln << "\\end{LyXParagraphLeftIndent}\n";
258 state->prev_env_language_ = data.par_language;
259 if (runparams.encoding != data.prev_encoding) {
260 runparams.encoding = data.prev_encoding;
261 os << setEncoding(data.prev_encoding->iconvName());
265 // Check whether we should output a blank line after the environment
266 if (!data.style->nextnoindent)
271 void TeXEnvironment(Buffer const & buf, Text const & text,
272 OutputParams const & runparams,
273 pit_type & pit, otexstream & os)
275 ParagraphList const & paragraphs = text.paragraphs();
276 ParagraphList::const_iterator par = paragraphs.constIterator(pit);
277 LYXERR(Debug::LATEX, "TeXEnvironment for paragraph " << pit);
279 Layout const & current_layout = par->layout();
280 depth_type const current_depth = par->params().depth();
281 Length const & current_left_indent = par->params().leftIndent();
283 // This is for debugging purpose at the end.
284 pit_type const par_begin = pit;
285 for (; pit < runparams.par_end; ++pit) {
286 ParagraphList::const_iterator par = paragraphs.constIterator(pit);
288 // check first if this is an higher depth paragraph.
289 bool go_out = (par->params().depth() < current_depth);
290 if (par->params().depth() == current_depth) {
291 // This environment is finished.
292 go_out |= (par->layout() != current_layout);
293 go_out |= (par->params().leftIndent() != current_left_indent);
296 // nothing to do here, restore pit and go out.
301 if (par->layout() == current_layout
302 && par->params().depth() == current_depth
303 && par->params().leftIndent() == current_left_indent) {
304 // We are still in the same environment so TeXOnePar and continue;
305 TeXOnePar(buf, text, pit, os, runparams);
309 // We are now in a deeper environment.
310 // Either par->layout() != current_layout
311 // Or par->params().depth() > current_depth
312 // Or par->params().leftIndent() != current_left_indent)
314 // FIXME This test should not be necessary.
315 // We should perhaps issue an error if it is.
316 bool const force_plain_layout = text.inset().forcePlainLayout();
317 Layout const & style = force_plain_layout
318 ? buf.params().documentClass().plainLayout()
321 if (!style.isEnvironment()) {
322 // This is a standard paragraph, no need to call TeXEnvironment.
323 TeXOnePar(buf, text, pit, os, runparams);
327 // This is a new environment.
328 TeXEnvironmentData const data =
329 prepareEnvironment(buf, text, par, os, runparams);
330 // Recursive call to TeXEnvironment!
331 TeXEnvironment(buf, text, runparams, pit, os);
332 finishEnvironment(os, runparams, data);
335 if (pit != runparams.par_end)
336 LYXERR(Debug::LATEX, "TeXEnvironment for paragraph " << par_begin << " done.");
340 void getArgInsets(otexstream & os, OutputParams const & runparams, Layout::LaTeXArgMap const & latexargs,
341 map<int, lyx::InsetArgument const *> ilist, vector<string> required, string const & prefix)
343 unsigned int const argnr = latexargs.size();
347 // Default and preset args are always output, so if they require
348 // other arguments, consider this.
349 Layout::LaTeXArgMap::const_iterator lit = latexargs.begin();
350 Layout::LaTeXArgMap::const_iterator const lend = latexargs.end();
351 for (; lit != lend; ++lit) {
352 Layout::latexarg arg = (*lit).second;
353 if ((!arg.presetarg.empty() || !arg.defaultarg.empty()) && !arg.requires.empty()) {
354 vector<string> req = getVectorFromString(arg.requires);
355 required.insert(required.end(), req.begin(), req.end());
359 for (unsigned int i = 1; i <= argnr; ++i) {
360 map<int, InsetArgument const *>::const_iterator lit = ilist.find(i);
361 bool inserted = false;
362 if (lit != ilist.end()) {
363 InsetArgument const * ins = (*lit).second;
365 Layout::LaTeXArgMap::const_iterator const lait =
366 latexargs.find(ins->name());
367 if (lait != latexargs.end()) {
368 Layout::latexarg arg = (*lait).second;
369 docstring ldelim = arg.mandatory ?
370 from_ascii("{") : from_ascii("[");
371 docstring rdelim = arg.mandatory ?
372 from_ascii("}") : from_ascii("]");
373 if (!arg.ldelim.empty())
375 if (!arg.rdelim.empty())
377 ins->latexArgument(os, runparams, ldelim, rdelim, arg.presetarg);
383 Layout::LaTeXArgMap::const_iterator lait = latexargs.begin();
384 Layout::LaTeXArgMap::const_iterator const laend = latexargs.end();
385 for (; lait != laend; ++lait) {
386 string const name = prefix + convert<string>(i);
387 if ((*lait).first == name) {
388 Layout::latexarg arg = (*lait).second;
389 docstring preset = arg.presetarg;
390 if (!arg.defaultarg.empty()) {
393 preset += arg.defaultarg;
396 docstring ldelim = arg.ldelim.empty() ?
397 from_ascii("{") : arg.ldelim;
398 docstring rdelim = arg.rdelim.empty() ?
399 from_ascii("}") : arg.rdelim;
400 os << ldelim << preset << rdelim;
401 } else if (!preset.empty()) {
402 docstring ldelim = arg.ldelim.empty() ?
403 from_ascii("[") : arg.ldelim;
404 docstring rdelim = arg.rdelim.empty() ?
405 from_ascii("]") : arg.rdelim;
406 os << ldelim << preset << rdelim;
407 } else if (find(required.begin(), required.end(),
408 (*lait).first) != required.end()) {
409 docstring ldelim = arg.ldelim.empty() ?
410 from_ascii("[") : arg.ldelim;
411 docstring rdelim = arg.rdelim.empty() ?
412 from_ascii("]") : arg.rdelim;
413 os << ldelim << rdelim;
426 void latexArgInsets(Paragraph const & par, otexstream & os,
427 OutputParams const & runparams, Layout::LaTeXArgMap const & latexargs, string const & prefix)
429 map<int, InsetArgument const *> ilist;
430 vector<string> required;
432 InsetList::const_iterator it = par.insetList().begin();
433 InsetList::const_iterator end = par.insetList().end();
434 for (; it != end; ++it) {
435 if (it->inset->lyxCode() == ARG_CODE) {
436 InsetArgument const * ins =
437 static_cast<InsetArgument const *>(it->inset);
438 if (ins->name().empty())
439 LYXERR0("Error: Unnamed argument inset!");
441 string const name = prefix.empty() ? ins->name() : split(ins->name(), ':');
442 unsigned int const nr = convert<unsigned int>(name);
444 Layout::LaTeXArgMap::const_iterator const lit =
445 latexargs.find(ins->name());
446 if (lit != latexargs.end()) {
447 Layout::latexarg const & arg = (*lit).second;
448 if (!arg.requires.empty()) {
449 vector<string> req = getVectorFromString(arg.requires);
450 required.insert(required.end(), req.begin(), req.end());
456 getArgInsets(os, runparams, latexargs, ilist, required, prefix);
460 void latexArgInsets(ParagraphList const & pars, ParagraphList::const_iterator pit,
461 otexstream & os, OutputParams const & runparams, Layout::LaTeXArgMap const & latexargs,
462 string const & prefix)
464 map<int, InsetArgument const *> ilist;
465 vector<string> required;
467 depth_type const current_depth = pit->params().depth();
468 Layout const current_layout = pit->layout();
470 // get the first paragraph in sequence with this layout and depth
473 if (lyx::prev(pit, offset) == pars.begin())
475 ParagraphList::const_iterator priorpit = lyx::prev(pit, offset + 1);
476 if (priorpit->layout() == current_layout
477 && priorpit->params().depth() == current_depth)
483 ParagraphList::const_iterator spit = lyx::prev(pit, offset);
485 for (; spit != pars.end(); ++spit) {
486 if (spit->layout() != current_layout || spit->params().depth() < current_depth)
488 if (spit->params().depth() > current_depth)
490 InsetList::const_iterator it = spit->insetList().begin();
491 InsetList::const_iterator end = spit->insetList().end();
492 for (; it != end; ++it) {
493 if (it->inset->lyxCode() == ARG_CODE) {
494 InsetArgument const * ins =
495 static_cast<InsetArgument const *>(it->inset);
496 if (ins->name().empty())
497 LYXERR0("Error: Unnamed argument inset!");
499 string const name = prefix.empty() ? ins->name() : split(ins->name(), ':');
500 unsigned int const nr = convert<unsigned int>(name);
501 if (ilist.find(nr) == ilist.end())
503 Layout::LaTeXArgMap::const_iterator const lit =
504 latexargs.find(ins->name());
505 if (lit != latexargs.end()) {
506 Layout::latexarg const & arg = (*lit).second;
507 if (!arg.requires.empty()) {
508 vector<string> req = getVectorFromString(arg.requires);
509 required.insert(required.end(), req.begin(), req.end());
516 getArgInsets(os, runparams, latexargs, ilist, required, prefix);
521 // output the proper paragraph start according to latextype.
522 void parStartCommand(Paragraph const & par, otexstream & os,
523 OutputParams const & runparams, Layout const & style)
525 switch (style.latextype) {
527 os << '\\' << from_ascii(style.latexname());
530 if (!style.latexargs().empty())
531 latexArgInsets(par, os, runparams, style.latexargs());
532 os << from_ascii(style.latexparam());
534 case LATEX_ITEM_ENVIRONMENT:
535 case LATEX_LIST_ENVIRONMENT:
536 os << "\\" + style.itemcommand();
538 if (!style.itemargs().empty())
539 latexArgInsets(par, os, runparams, style.itemargs(), "item:");
542 case LATEX_BIB_ENVIRONMENT:
543 // ignore this, the inset will write itself
552 // FIXME: this should be anonymous
553 void TeXOnePar(Buffer const & buf,
557 OutputParams const & runparams_in,
558 string const & everypar,
559 int start_pos, int end_pos)
561 BufferParams const & bparams = runparams_in.is_child
562 ? buf.masterParams() : buf.params();
563 ParagraphList const & paragraphs = text.paragraphs();
564 Paragraph const & par = paragraphs.at(pit);
565 // FIXME This check should not really be needed.
566 // Perhaps we should issue an error if it is.
567 Layout const & style = text.inset().forcePlainLayout() ?
568 bparams.documentClass().plainLayout() : par.layout();
570 if (style.inpreamble)
573 LYXERR(Debug::LATEX, "TeXOnePar for paragraph " << pit << " ptr " << &par << " '"
576 OutputParams runparams = runparams_in;
577 runparams.isLastPar = (pit == pit_type(paragraphs.size() - 1));
578 // We reinitialze par begin and end to be on the safe side
579 // with embedded inset as we don't know if they set those
581 runparams.par_begin = 0;
582 runparams.par_end = 0;
584 bool const maintext = text.isMainText();
585 // we are at the beginning of an inset and CJK is already open;
586 // we count inheritation levels to get the inset nesting right.
587 OutputState * state = getOutputState();
588 if (pit == 0 && !maintext
589 && (state->cjk_inherited_ > 0 || state->open_encoding_ == CJK)) {
590 state->cjk_inherited_ += 1;
591 state->open_encoding_ = none;
594 if (text.inset().isPassThru()) {
595 Font const outerfont = text.outerFont(pit);
597 // No newline before first paragraph in this lyxtext
600 if (!text.inset().getLayout().parbreakIsNewline())
604 par.latex(bparams, outerfont, os, runparams, start_pos, end_pos);
608 Paragraph const * nextpar = runparams.isLastPar
609 ? 0 : ¶graphs.at(pit + 1);
611 if (style.pass_thru) {
612 Font const outerfont = text.outerFont(pit);
613 parStartCommand(par, os, runparams, style);
615 par.latex(bparams, outerfont, os, runparams, start_pos, end_pos);
617 // I did not create a parEndCommand for this minuscule
618 // task because in the other user of parStartCommand
619 // the code is different (JMarc)
620 if (style.isCommand())
624 if (!style.parbreak_is_newline) {
626 } else if (nextpar && !style.isEnvironment()) {
627 Layout const nextstyle = text.inset().forcePlainLayout()
628 ? bparams.documentClass().plainLayout()
630 if (nextstyle.name() != style.name())
637 // This paragraph's language
638 Language const * const par_language = par.getParLanguage(bparams);
639 Language const * const nextpar_language = nextpar ?
640 nextpar->getParLanguage(bparams) : 0;
641 // The document's language
642 Language const * const doc_language = bparams.language;
643 // The language that was in effect when the environment this paragraph is
644 // inside of was opened
645 Language const * const outer_language =
646 (runparams.local_font != 0) ?
647 runparams.local_font->language() : doc_language;
649 Paragraph const * priorpar = (pit == 0) ? 0 : ¶graphs.at(pit - 1);
651 // The previous language that was in effect is the language of the
652 // previous paragraph, unless the previous paragraph is inside an
653 // environment with nesting depth greater than (or equal to, but with
654 // a different layout) the current one. If there is no previous
655 // paragraph, the previous language is the outer language.
656 bool const use_prev_env_language = state->prev_env_language_ != 0
658 && priorpar->layout().isEnvironment()
659 && (priorpar->getDepth() > par.getDepth()
660 || (priorpar->getDepth() == par.getDepth()
661 && priorpar->layout() != par.layout()));
662 Language const * const prev_language =
664 ? (use_prev_env_language ? state->prev_env_language_
665 : priorpar->getParLanguage(bparams))
669 bool const use_polyglossia = runparams.use_polyglossia;
670 string const par_lang = use_polyglossia ?
671 getPolyglossiaEnvName(par_language): par_language->babel();
672 string const prev_lang = use_polyglossia ?
673 getPolyglossiaEnvName(prev_language) : prev_language->babel();
674 string const outer_lang = use_polyglossia ?
675 getPolyglossiaEnvName(outer_language) : outer_language->babel();
676 string const nextpar_lang = nextpar_language ? (use_polyglossia ?
677 getPolyglossiaEnvName(nextpar_language) :
678 nextpar_language->babel()) : string();
679 string lang_begin_command = use_polyglossia ?
680 "\\begin{$$lang}$$opts" : lyxrc.language_command_begin;
681 string lang_end_command = use_polyglossia ?
682 "\\end{$$lang}" : lyxrc.language_command_end;
683 // the '%' is necessary to prevent unwanted whitespace
684 string lang_command_termination = "%\n";
686 // In some insets (such as Arguments), we cannot use \selectlanguage
687 bool const localswitch = text.inset().forceLocalFontSwitch();
689 lang_begin_command = use_polyglossia ?
690 "\\text$$lang$$opts{" : lyxrc.language_command_local;
691 lang_end_command = "}";
692 lang_command_termination.clear();
695 if (par_lang != prev_lang
696 // check if we already put language command in TeXEnvironment()
697 && !(style.isEnvironment()
698 && (pit == 0 || (priorpar->layout() != par.layout()
699 && priorpar->getDepth() <= par.getDepth())
700 || priorpar->getDepth() < par.getDepth())))
702 if (!lang_end_command.empty() &&
703 prev_lang != outer_lang &&
706 os << from_ascii(subst(lang_end_command,
709 << lang_command_termination;
710 if (prev_lang == state->open_polyglossia_lang_)
711 state->open_polyglossia_lang_ = "";
714 // We need to open a new language if we couldn't close the previous
715 // one (because there's no language_command_end); and even if we closed
716 // the previous one, if the current language is different than the
717 // outer_language (which is currently in effect once the previous one
719 if ((lang_end_command.empty() || par_lang != outer_lang)
720 && !par_lang.empty()) {
721 // If we're inside an inset, and that inset is within an \L or \R
722 // (or equivalents), then within the inset, too, any opposite
723 // language paragraph should appear within an \L or \R (in addition
724 // to, outside of, the normal language switch commands).
725 // This behavior is not correct for ArabTeX, though.
728 && par_language->lang() != "arabic_arabtex"
729 && outer_language->lang() != "arabic_arabtex"
730 // are we in an inset?
731 && runparams.local_font != 0
732 // is the inset within an \L or \R?
734 // FIXME: currently, we don't check this; this means that
735 // we'll have unnnecessary \L and \R commands, but that
736 // doesn't seem to hurt (though latex will complain)
738 // is this paragraph in the opposite direction?
739 && runparams.local_font->isRightToLeft() != par_language->rightToLeft()) {
740 // FIXME: I don't have a working copy of the Arabi package, so
741 // I'm not sure if the farsi and arabic_arabi stuff is correct
743 if (par_language->lang() == "farsi")
745 else if (outer_language->lang() == "farsi")
747 else if (par_language->lang() == "arabic_arabi")
749 else if (outer_language->lang() == "arabic_arabi")
751 // remaining RTL languages currently is hebrew
752 else if (par_language->rightToLeft())
757 // With CJK, the CJK tag has to be closed first (see below)
758 if (runparams.encoding->package() != Encoding::CJK
759 && !par_lang.empty()) {
760 string bc = use_polyglossia ?
761 getPolyglossiaBegin(lang_begin_command, par_lang, par_language->polyglossiaOpts())
762 : subst(lang_begin_command, "$$lang", par_lang);
764 os << lang_command_termination;
769 // Switch file encoding if necessary; no need to do this for "default"
770 // encoding, since this only affects the position of the outputted
771 // \inputencoding command; the encoding switch will occur when necessary
772 if (bparams.inputenc == "auto"
773 && !runparams.isFullUnicode() // Xe/LuaTeX use one document-wide encoding (see also switchEncoding())
774 && runparams.encoding->package() != Encoding::none) {
775 // Look ahead for future encoding changes.
776 // We try to output them at the beginning of the paragraph,
777 // since the \inputencoding command is not allowed e.g. in
778 // sections. For this reason we only set runparams.moving_arg
779 // after checking for the encoding change, otherwise the
780 // change would be always avoided by switchEncoding().
781 for (pos_type i = 0; i < par.size(); ++i) {
782 char_type const c = par.getChar(i);
783 Encoding const * const encoding =
784 par.getFontSettings(bparams, i).language()->encoding();
785 if (encoding->package() != Encoding::CJK
786 && runparams.encoding->package() == Encoding::inputenc
791 // All characters before c are in the ASCII range, and
792 // c is non-ASCII (but no inset), so change the
793 // encoding to that required by the language of c.
794 // With CJK, only add switch if we have CJK content at the beginning
796 if (i != 0 && encoding->package() == Encoding::CJK)
799 pair<bool, int> enc_switch = switchEncoding(os.os(),
800 bparams, runparams, *encoding);
801 // the following is necessary after a CJK environment in a multilingual
802 // context (nesting issue).
803 if (par_language->encoding()->package() == Encoding::CJK
804 && state->open_encoding_ != CJK && state->cjk_inherited_ == 0) {
805 os << "\\begin{CJK}{" << from_ascii(par_language->encoding()->latexName())
806 << "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
807 state->open_encoding_ = CJK;
809 if (encoding->package() != Encoding::none && enc_switch.first) {
810 if (enc_switch.second > 0) {
811 // the '%' is necessary to prevent unwanted whitespace
814 // With CJK, the CJK tag had to be closed first (see above)
815 if (runparams.encoding->package() == Encoding::CJK
816 && !par_lang.empty()) {
817 os << from_ascii(subst(
821 << lang_command_termination;
823 runparams.encoding = encoding;
829 runparams.moving_arg |= style.needprotect;
830 Encoding const * const prev_encoding = runparams.encoding;
832 bool const useSetSpace = bparams.documentClass().provides("SetSpace");
833 if (par.allowParagraphCustomization()) {
834 if (par.params().startOfAppendix()) {
835 os << "\n\\appendix\n";
838 if (!par.params().spacing().isDefault()
839 && (pit == 0 || !priorpar->hasSameLayout(par)))
841 os << from_ascii(par.params().spacing().writeEnvirBegin(useSetSpace))
845 if (style.isCommand()) {
850 parStartCommand(par, os, runparams, style);
851 Font const outerfont = text.outerFont(pit);
854 os << from_utf8(everypar);
855 par.latex(bparams, outerfont, os, runparams, start_pos, end_pos);
857 // Make sure that \\par is done with the font of the last
858 // character if this has another size as the default.
859 // This is necessary because LaTeX (and LyX on the screen)
860 // calculates the space between the baselines according
861 // to this font. (Matthias)
863 // We must not change the font for the last paragraph
864 // of non-multipar insets, tabular cells or commands,
865 // since this produces unwanted whitespace.
867 Font const font = par.empty()
868 ? par.getLayoutFont(bparams, outerfont)
869 : par.getFont(bparams, par.size() - 1, outerfont);
871 bool const is_command = style.isCommand();
873 if (style.resfont.size() != font.fontInfo().size()
874 && (nextpar || maintext
875 || (text.inset().paragraphs().size() > 1
876 && text.inset().lyxCode() != CELL_CODE))
879 os << "\\" << from_ascii(font.latexSize()) << " \\par}";
880 } else if (is_command) {
882 if (!style.postcommandargs().empty())
883 latexArgInsets(par, os, runparams, style.postcommandargs(), "post:");
884 if (runparams.encoding != prev_encoding) {
885 runparams.encoding = prev_encoding;
886 os << setEncoding(prev_encoding->iconvName());
890 bool pending_newline = false;
891 bool unskip_newline = false;
892 switch (style.latextype) {
893 case LATEX_ITEM_ENVIRONMENT:
894 case LATEX_LIST_ENVIRONMENT:
895 if (nextpar && par.params().depth() < nextpar->params().depth())
896 pending_newline = true;
898 case LATEX_ENVIRONMENT: {
899 // if its the last paragraph of the current environment
900 // skip it otherwise fall through
902 && (nextpar->layout() != par.layout()
903 || nextpar->params().depth() != par.params().depth()))
907 // fall through possible
909 // we don't need it for the last paragraph!!!
911 pending_newline = true;
914 if (par.allowParagraphCustomization()) {
915 if (!par.params().spacing().isDefault()
916 && (runparams.isLastPar || !nextpar->hasSameLayout(par))) {
920 string const endtag =
921 par.params().spacing().writeEnvirEnd(useSetSpace);
922 if (prefixIs(endtag, "\\end{"))
925 os << from_ascii(endtag);
926 pending_newline = true;
930 // Closing the language is needed for the last paragraph; it is also
931 // needed if we're within an \L or \R that we may have opened above (not
932 // necessarily in this paragraph) and are about to close.
933 bool closing_rtl_ltr_environment = !use_polyglossia
935 && (par_language->lang() != "arabic_arabtex"
936 && outer_language->lang() != "arabic_arabtex")
937 // have we opened an \L or \R environment?
938 && runparams.local_font != 0
939 && runparams.local_font->isRightToLeft() != par_language->rightToLeft()
940 // are we about to close the language?
941 &&((nextpar && par_lang != nextpar_lang)
942 || (runparams.isLastPar && par_lang != outer_lang));
944 if (closing_rtl_ltr_environment
945 || (runparams.isLastPar
946 && par_lang != outer_lang)) {
947 // Since \selectlanguage write the language to the aux file,
948 // we need to reset the language at the end of footnote or
954 // when the paragraph uses CJK, the language has to be closed earlier
955 if (font.language()->encoding()->package() != Encoding::CJK) {
956 if (lang_end_command.empty()) {
957 // If this is a child, we should restore the
958 // master language after the last paragraph.
959 Language const * const current_language =
960 (runparams.isLastPar && runparams.master_language)
961 ? runparams.master_language
963 string const current_lang = use_polyglossia
964 ? getPolyglossiaEnvName(current_language)
965 : current_language->babel();
966 if (!current_lang.empty()) {
967 string bc = use_polyglossia ?
968 getPolyglossiaBegin(lang_begin_command, current_lang,
969 current_language->polyglossiaOpts())
970 : subst(lang_begin_command, "$$lang", current_lang);
972 pending_newline = !localswitch;
973 unskip_newline = !localswitch;
975 } else if (!par_lang.empty()) {
976 // If we are in an environment, we have to close the "outer" language afterwards
977 if (!style.isEnvironment() || state->open_polyglossia_lang_ != par_lang) {
978 os << from_ascii(subst(
982 pending_newline = !localswitch;
983 unskip_newline = !localswitch;
988 if (closing_rtl_ltr_environment)
991 bool const last_was_separator =
992 par.size() > 0 && par.isEnvSeparator(par.size() - 1);
994 if (pending_newline) {
996 // prevent unwanted whitespace
998 if (!os.afterParbreak() && !last_was_separator)
1002 // if this is a CJK-paragraph and the next isn't, close CJK
1003 // also if the next paragraph is a multilingual environment (because of nesting)
1005 && state->open_encoding_ == CJK
1006 && (nextpar_language->encoding()->package() != Encoding::CJK
1007 || (nextpar->layout().isEnvironment() && nextpar->isMultiLingual(bparams)))
1008 // inbetween environments, CJK has to be closed later (nesting!)
1009 && (!style.isEnvironment() || !nextpar->layout().isEnvironment())) {
1010 os << "\\end{CJK}\n";
1011 state->open_encoding_ = none;
1014 // If this is the last paragraph, close the CJK environment
1015 // if necessary. If it's an environment, we'll have to \end that first.
1016 if (runparams.isLastPar && !style.isEnvironment()) {
1017 switch (state->open_encoding_) {
1019 // do nothing at the end of child documents
1020 if (maintext && buf.masterBuffer() != &buf)
1024 os << "\n\\end{CJK}\n";
1028 state->open_encoding_ = none;
1033 state->open_encoding_ = none;
1043 // If this is the last paragraph, and a local_font was set upon entering
1044 // the inset, and we're using "auto" or "default" encoding, and not
1045 // compiling with XeTeX or LuaTeX, the encoding
1046 // should be set back to that local_font's encoding.
1047 if (runparams.isLastPar && runparams_in.local_font != 0
1048 && runparams_in.encoding != runparams_in.local_font->language()->encoding()
1049 && (bparams.inputenc == "auto" || bparams.inputenc == "default")
1050 && !runparams.isFullUnicode()
1052 runparams_in.encoding = runparams_in.local_font->language()->encoding();
1053 os << setEncoding(runparams_in.encoding->iconvName());
1055 // Otherwise, the current encoding should be set for the next paragraph.
1057 runparams_in.encoding = runparams.encoding;
1060 // we don't need a newline for the last paragraph!!!
1061 // Note from JMarc: we will re-add a \n explicitly in
1062 // TeXEnvironment, because it is needed in this case
1063 if (nextpar && !os.afterParbreak() && !last_was_separator) {
1064 // Make sure to start a new line
1066 Layout const & next_layout = nextpar->layout();
1067 // A newline '\n' is always output before a command,
1068 // so avoid doubling it.
1069 if (!next_layout.isCommand()) {
1070 // Here we now try to avoid spurious empty lines by
1071 // outputting a paragraph break only if: (case 1) the
1072 // paragraph style allows parbreaks and no \begin, \end
1073 // or \item tags are going to follow (i.e., if the next
1074 // isn't the first or the current isn't the last
1075 // paragraph of an environment or itemize) and the
1076 // depth and alignment of the following paragraph is
1077 // unchanged, or (case 2) the following is a
1078 // non-environment paragraph whose depth is increased
1079 // but whose alignment is unchanged, or (case 3) the
1080 // paragraph is not an environment and the next one is a
1081 // non-itemize-like env at lower depth, or (case 4) the
1082 // paragraph is a command not followed by an environment
1083 // and the alignment of the current and next paragraph
1084 // is unchanged, or (case 5) the current alignment is
1085 // changed and a standard paragraph follows.
1086 DocumentClass const & tclass = bparams.documentClass();
1087 if ((style == next_layout
1088 && !style.parbreak_is_newline
1089 && !text.inset().getLayout().parbreakIsNewline()
1090 && style.latextype != LATEX_ITEM_ENVIRONMENT
1091 && style.latextype != LATEX_LIST_ENVIRONMENT
1092 && style.align == par.getAlign()
1093 && nextpar->getDepth() == par.getDepth()
1094 && nextpar->getAlign() == par.getAlign())
1095 || (!next_layout.isEnvironment()
1096 && nextpar->getDepth() > par.getDepth()
1097 && nextpar->getAlign() == par.getAlign())
1098 || (!style.isEnvironment()
1099 && next_layout.latextype == LATEX_ENVIRONMENT
1100 && nextpar->getDepth() < par.getDepth())
1101 || (style.isCommand()
1102 && !next_layout.isEnvironment()
1103 && style.align == par.getAlign()
1104 && next_layout.align == nextpar->getAlign())
1105 || (style.align != par.getAlign()
1106 && tclass.isDefaultLayout(next_layout))) {
1112 LYXERR(Debug::LATEX, "TeXOnePar for paragraph " << pit << " done; ptr "
1113 << &par << " next " << nextpar);
1119 // LaTeX all paragraphs
1120 void latexParagraphs(Buffer const & buf,
1123 OutputParams const & runparams,
1124 string const & everypar)
1126 LASSERT(runparams.par_begin <= runparams.par_end,
1127 { os << "% LaTeX Output Error\n"; return; } );
1129 BufferParams const & bparams = buf.params();
1131 bool const maintext = text.isMainText();
1132 bool const is_child = buf.masterBuffer() != &buf;
1134 // Open a CJK environment at the beginning of the main buffer
1135 // if the document's language is a CJK language
1136 // (but not in child documents)
1137 OutputState * state = getOutputState();
1138 if (maintext && !is_child
1139 && bparams.encoding().package() == Encoding::CJK) {
1140 os << "\\begin{CJK}{" << from_ascii(bparams.encoding().latexName())
1141 << "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
1142 state->open_encoding_ = CJK;
1144 // if "auto begin" is switched off, explicitly switch the
1145 // language on at start
1146 string const mainlang = runparams.use_polyglossia
1147 ? getPolyglossiaEnvName(bparams.language)
1148 : bparams.language->babel();
1149 string const lang_begin_command = runparams.use_polyglossia ?
1150 "\\begin{$$lang}$$opts" : lyxrc.language_command_begin;
1152 if (maintext && !lyxrc.language_auto_begin &&
1153 !mainlang.empty()) {
1155 string bc = runparams.use_polyglossia ?
1156 getPolyglossiaBegin(lang_begin_command, mainlang,
1157 bparams.language->polyglossiaOpts())
1158 : subst(lang_begin_command, "$$lang", mainlang);
1163 ParagraphList const & paragraphs = text.paragraphs();
1165 if (runparams.par_begin == runparams.par_end) {
1166 // The full doc will be exported but it is easier to just rely on
1167 // runparams range parameters that will be passed TeXEnvironment.
1168 runparams.par_begin = 0;
1169 runparams.par_end = paragraphs.size();
1172 pit_type pit = runparams.par_begin;
1173 // lastpit is for the language check after the loop.
1174 pit_type lastpit = pit;
1175 // variables used in the loop:
1176 bool was_title = false;
1177 bool already_title = false;
1178 DocumentClass const & tclass = bparams.documentClass();
1180 for (; pit < runparams.par_end; ++pit) {
1182 ParagraphList::const_iterator par = paragraphs.constIterator(pit);
1184 // FIXME This check should not be needed. We should
1185 // perhaps issue an error if it is.
1186 Layout const & layout = text.inset().forcePlainLayout() ?
1187 tclass.plainLayout() : par->layout();
1189 if (layout.intitle) {
1190 if (already_title) {
1191 LYXERR0("Error in latexParagraphs: You"
1192 " should not mix title layouts"
1193 " with normal ones.");
1194 } else if (!was_title) {
1196 if (tclass.titletype() == TITLE_ENVIRONMENT) {
1198 << from_ascii(tclass.titlename())
1202 } else if (was_title && !already_title) {
1203 if (tclass.titletype() == TITLE_ENVIRONMENT) {
1204 os << "\\end{" << from_ascii(tclass.titlename())
1208 os << "\\" << from_ascii(tclass.titlename())
1211 already_title = true;
1216 if (!layout.isEnvironment() && par->params().leftIndent().zero()) {
1217 // This is a standard top level paragraph, TeX it and continue.
1218 TeXOnePar(buf, text, pit, os, runparams, everypar);
1222 TeXEnvironmentData const data =
1223 prepareEnvironment(buf, text, par, os, runparams);
1224 // pit can be changed in TeXEnvironment.
1225 TeXEnvironment(buf, text, runparams, pit, os);
1226 finishEnvironment(os, runparams, data);
1229 if (pit == runparams.par_end) {
1230 // Make sure that the last paragraph is
1231 // correctly terminated (because TeXOnePar does
1232 // not add a \n in this case)
1236 // It might be that we only have a title in this document
1237 if (was_title && !already_title) {
1238 if (tclass.titletype() == TITLE_ENVIRONMENT) {
1239 os << "\\end{" << from_ascii(tclass.titlename())
1242 os << "\\" << from_ascii(tclass.titlename())
1247 // if "auto end" is switched off, explicitly close the language at the end
1248 // but only if the last par is in a babel or polyglossia language
1249 string const lang_end_command = runparams.use_polyglossia ?
1250 "\\end{$$lang}" : lyxrc.language_command_end;
1251 if (maintext && !lyxrc.language_auto_end && !mainlang.empty() &&
1252 paragraphs.at(lastpit).getParLanguage(bparams)->encoding()->package() != Encoding::CJK) {
1253 os << from_utf8(subst(lang_end_command,
1257 if (state->open_polyglossia_lang_ == mainlang)
1258 state->open_polyglossia_lang_ = "";
1261 // If the last paragraph is an environment, we'll have to close
1262 // CJK at the very end to do proper nesting.
1263 if (maintext && !is_child && state->open_encoding_ == CJK) {
1264 os << "\\end{CJK}\n";
1265 state->open_encoding_ = none;
1267 // Likewise for polyglossia
1268 if (maintext && !is_child && state->open_polyglossia_lang_ != "") {
1269 os << from_utf8(subst(lang_end_command,
1271 state->open_polyglossia_lang_))
1273 state->open_polyglossia_lang_ = "";
1276 // reset inherited encoding
1277 if (state->cjk_inherited_ > 0) {
1278 state->cjk_inherited_ -= 1;
1279 if (state->cjk_inherited_ == 0)
1280 state->open_encoding_ = CJK;
1285 pair<bool, int> switchEncoding(odocstream & os, BufferParams const & bparams,
1286 OutputParams const & runparams, Encoding const & newEnc,
1289 // XeTeX/LuaTeX use only one encoding per document:
1290 // * with useNonTeXFonts: "utf8plain",
1291 // * with XeTeX and TeX fonts: "ascii" (inputenc fails),
1292 // * with LuaTeX and TeX fonts: only one encoding accepted by luainputenc.
1293 if (runparams.isFullUnicode())
1294 return make_pair(false, 0);
1296 Encoding const & oldEnc = *runparams.encoding;
1297 bool moving_arg = runparams.moving_arg;
1298 // If we switch from/to CJK, we need to switch anyway, despite custom inputenc
1299 bool const from_to_cjk =
1300 (oldEnc.package() == Encoding::CJK && newEnc.package() != Encoding::CJK)
1301 || (oldEnc.package() != Encoding::CJK && newEnc.package() == Encoding::CJK);
1302 if (!force && !from_to_cjk
1303 && ((bparams.inputenc != "auto" && bparams.inputenc != "default") || moving_arg))
1304 return make_pair(false, 0);
1306 // Do nothing if the encoding is unchanged.
1307 if (oldEnc.name() == newEnc.name())
1308 return make_pair(false, 0);
1310 // FIXME We ignore encoding switches from/to encodings that do
1311 // neither support the inputenc package nor the CJK package here.
1312 // This does of course only work in special cases (e.g. switch from
1313 // tis620-0 to latin1, but the text in latin1 contains ASCII only),
1314 // but it is the best we can do
1315 if (oldEnc.package() == Encoding::none
1316 || newEnc.package() == Encoding::none)
1317 return make_pair(false, 0);
1319 LYXERR(Debug::LATEX, "Changing LaTeX encoding from "
1320 << oldEnc.name() << " to " << newEnc.name());
1321 os << setEncoding(newEnc.iconvName());
1322 if (bparams.inputenc == "default")
1323 return make_pair(true, 0);
1325 docstring const inputenc_arg(from_ascii(newEnc.latexName()));
1326 OutputState * state = getOutputState();
1327 switch (newEnc.package()) {
1328 case Encoding::none:
1329 case Encoding::japanese:
1330 // shouldn't ever reach here, see above
1331 return make_pair(true, 0);
1332 case Encoding::inputenc: {
1333 int count = inputenc_arg.length();
1334 if (oldEnc.package() == Encoding::CJK &&
1335 state->open_encoding_ == CJK) {
1337 state->open_encoding_ = none;
1340 else if (oldEnc.package() == Encoding::inputenc &&
1341 state->open_encoding_ == inputenc) {
1343 state->open_encoding_ = none;
1346 if (runparams.local_font != 0
1347 && oldEnc.package() == Encoding::CJK) {
1348 // within insets, \inputenc switches need
1349 // to be embraced within \bgroup...\egroup;
1353 state->open_encoding_ = inputenc;
1355 // with the japanese option, inputenc is omitted.
1356 if (runparams.use_japanese)
1357 return make_pair(true, count);
1358 os << "\\inputencoding{" << inputenc_arg << '}';
1359 return make_pair(true, count + 16);
1361 case Encoding::CJK: {
1362 int count = inputenc_arg.length();
1363 if (oldEnc.package() == Encoding::CJK &&
1364 state->open_encoding_ == CJK) {
1368 if (oldEnc.package() == Encoding::inputenc &&
1369 state->open_encoding_ == inputenc) {
1373 os << "\\begin{CJK}{" << inputenc_arg << "}{"
1374 << from_ascii(bparams.fonts_cjk) << "}";
1375 state->open_encoding_ = CJK;
1376 return make_pair(true, count + 15);
1379 // Dead code to avoid a warning:
1380 return make_pair(true, 0);