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 "texstream.h"
27 #include "TextClass.h"
29 #include "insets/InsetBibitem.h"
30 #include "insets/InsetArgument.h"
32 #include "frontends/alert.h"
34 #include "support/lassert.h"
35 #include "support/convert.h"
36 #include "support/debug.h"
37 #include "support/lstrings.h"
38 #include "support/lyxalgo.h"
39 #include "support/textutils.h"
40 #include "support/gettext.h"
42 #include <QThreadStorage>
48 using namespace lyx::support;
64 OutputState() : open_encoding_(none), cjk_inherited_(0),
65 prev_env_language_(0), nest_level_(0)
68 OpenEncoding open_encoding_;
70 Language const * prev_env_language_;
72 stack<int> lang_switch_depth_; // Both are always empty when
73 stack<string> open_polyglossia_lang_; // not using polyglossia
77 OutputState * getOutputState()
79 // FIXME An instance of OutputState should be kept around for each export
80 // instead of using local thread storage
81 static QThreadStorage<OutputState *> outputstate;
82 if (!outputstate.hasLocalData())
83 outputstate.setLocalData(new OutputState);
84 return outputstate.localData();
88 string const & openLanguageName(OutputState const * state)
90 // Return a reference to the last active language opened with
91 // polyglossia or when using begin/end commands. If none or when
92 // using babel with only a begin command, return a reference to
95 static string const empty;
97 return state->open_polyglossia_lang_.empty()
99 : state->open_polyglossia_lang_.top();
103 bool atSameLastLangSwitchDepth(OutputState const * state)
105 // Return true if the actual nest level is the same at which the
106 // language was switched when using polyglossia or begin/end
107 // commands. Instead, return always true when using babel with
108 // only a begin command.
110 return state->lang_switch_depth_.size() == 0
112 : abs(state->lang_switch_depth_.top()) == state->nest_level_;
116 bool isLocalSwitch(OutputState const * state)
118 // Return true if the language was opened by a local command switch.
120 return state->lang_switch_depth_.size()
121 && state->lang_switch_depth_.top() < 0;
125 bool langOpenedAtThisLevel(OutputState const * state)
127 // Return true if the language was opened at the current nesting level.
129 return state->lang_switch_depth_.size()
130 && abs(state->lang_switch_depth_.top()) == state->nest_level_;
134 string const getPolyglossiaEnvName(Language const * lang)
136 string result = lang->polyglossia();
137 if (result == "arabic")
138 // exceptional spelling; see polyglossia docs.
144 string const getPolyglossiaBegin(string const & lang_begin_command,
145 string const & lang, string const & opts,
146 bool const localswitch = false)
150 // we need to revert the upcasing done in getPolyglossiaEnvName()
151 // in case we have a local polyglossia command (\textarabic).
152 string language = localswitch ? ascii_lowercase(lang) : lang;
153 result = subst(lang_begin_command, "$$lang", language);
155 string options = opts.empty() ?
156 string() : "[" + opts + "]";
157 result = subst(result, "$$opts", options);
163 struct TeXEnvironmentData
166 Layout const * style;
167 Language const * par_language;
168 Encoding const * prev_encoding;
169 bool leftindent_open;
173 static TeXEnvironmentData prepareEnvironment(Buffer const & buf,
175 ParagraphList::const_iterator pit,
177 OutputParams const & runparams)
179 TeXEnvironmentData data;
181 BufferParams const & bparams = buf.params();
183 // FIXME This test should not be necessary.
184 // We should perhaps issue an error if it is.
185 Layout const & style = text.inset().forcePlainLayout() ?
186 bparams.documentClass().plainLayout() : pit->layout();
188 ParagraphList const & paragraphs = text.paragraphs();
189 ParagraphList::const_iterator const priorpit =
190 pit == paragraphs.begin() ? pit : prev(pit, 1);
192 OutputState * state = getOutputState();
193 bool const use_prev_env_language = state->prev_env_language_ != 0
194 && priorpit->layout().isEnvironment()
195 && (priorpit->getDepth() > pit->getDepth()
196 || (priorpit->getDepth() == pit->getDepth()
197 && priorpit->layout() != pit->layout()));
199 data.prev_encoding = runparams.encoding;
200 data.par_language = pit->getParLanguage(bparams);
201 Language const * const doc_language = bparams.language;
202 Language const * const prev_par_language =
203 (pit != paragraphs.begin())
204 ? (use_prev_env_language ? state->prev_env_language_
205 : priorpit->getParLanguage(bparams))
208 bool const use_polyglossia = runparams.use_polyglossia;
209 string const par_lang = use_polyglossia ?
210 getPolyglossiaEnvName(data.par_language) : data.par_language->babel();
211 string const prev_par_lang = use_polyglossia ?
212 getPolyglossiaEnvName(prev_par_language) : prev_par_language->babel();
213 string const doc_lang = use_polyglossia ?
214 getPolyglossiaEnvName(doc_language) : doc_language->babel();
215 string const lang_begin_command = use_polyglossia ?
216 "\\begin{$$lang}" : lyxrc.language_command_begin;
217 string const lang_end_command = use_polyglossia ?
218 "\\end{$$lang}" : lyxrc.language_command_end;
219 bool const using_begin_end = use_polyglossia ||
220 !lang_end_command.empty();
222 // For polyglossia, switch language outside of environment, if possible.
223 if (par_lang != prev_par_lang) {
224 if ((!using_begin_end || langOpenedAtThisLevel(state)) &&
225 !lang_end_command.empty() &&
226 prev_par_lang != doc_lang &&
227 !prev_par_lang.empty()) {
228 os << from_ascii(subst(
232 // the '%' is necessary to prevent unwanted whitespace
238 // If no language was explicitly opened and we are using
239 // polyglossia or begin/end commands, then the current
240 // language is the document language.
241 string const & cur_lang = using_begin_end
242 && state->lang_switch_depth_.size()
243 ? openLanguageName(state)
246 if ((lang_end_command.empty() ||
247 par_lang != doc_lang ||
248 par_lang != cur_lang) &&
250 string bc = use_polyglossia ?
251 getPolyglossiaBegin(lang_begin_command, par_lang,
252 data.par_language->polyglossiaOpts())
253 : subst(lang_begin_command, "$$lang", par_lang);
255 // the '%' is necessary to prevent unwanted whitespace
258 pushLanguageName(par_lang);
262 data.leftindent_open = false;
263 if (!pit->params().leftIndent().zero()) {
264 os << "\\begin{LyXParagraphLeftIndent}{"
265 << from_ascii(pit->params().leftIndent().asLatexString())
267 data.leftindent_open = true;
270 if (style.isEnvironment())
271 state->nest_level_ += 1;
273 if (style.isEnvironment() && !style.latexname().empty()) {
274 os << "\\begin{" << from_ascii(style.latexname()) << '}';
275 if (!style.latexargs().empty()) {
276 OutputParams rp = runparams;
277 rp.local_font = &pit->getFirstFontSettings(bparams);
278 latexArgInsets(paragraphs, pit, os, rp, style.latexargs());
280 if (style.latextype == LATEX_LIST_ENVIRONMENT) {
282 << pit->params().labelWidthString()
284 } else if (style.labeltype == LABEL_BIBLIO) {
285 if (pit->params().labelWidthString().empty())
286 os << '{' << bibitemWidest(buf, runparams) << "}\n";
289 << pit->params().labelWidthString()
292 os << from_ascii(style.latexparam()) << '\n';
296 // in multilingual environments, the CJK tags have to be nested properly
297 data.cjk_nested = false;
298 if (data.par_language->encoding()->package() == Encoding::CJK &&
299 state->open_encoding_ != CJK && pit->isMultiLingual(bparams)) {
300 if (prev_par_language->encoding()->package() == Encoding::CJK)
301 os << "\\begin{CJK}{" << from_ascii(data.par_language->encoding()->latexName())
302 << "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
303 state->open_encoding_ = CJK;
304 data.cjk_nested = true;
310 static void finishEnvironment(otexstream & os, OutputParams const & runparams,
311 TeXEnvironmentData const & data)
313 OutputState * state = getOutputState();
314 // BufferParams const & bparams = buf.params(); // FIXME: for speedup shortcut below, would require passing of "buf" as argument
315 if (state->open_encoding_ == CJK && data.cjk_nested) {
316 // We need to close the encoding even if it does not change
317 // to do correct environment nesting
318 os << "\\end{CJK}\n";
319 state->open_encoding_ = none;
322 if (data.style->isEnvironment()) {
324 bool const using_begin_end =
325 runparams.use_polyglossia ||
326 !lyxrc.language_command_end.empty();
327 // Close any language opened at this nest level
328 if (using_begin_end) {
329 while (langOpenedAtThisLevel(state)) {
330 if (isLocalSwitch(state)) {
334 << openLanguageName(state)
340 state->nest_level_ -= 1;
341 string const & name = data.style->latexname();
343 os << "\\end{" << from_ascii(name) << "}\n";
344 state->prev_env_language_ = data.par_language;
345 if (runparams.encoding != data.prev_encoding) {
346 runparams.encoding = data.prev_encoding;
347 os << setEncoding(data.prev_encoding->iconvName());
351 if (data.leftindent_open) {
352 os << breakln << "\\end{LyXParagraphLeftIndent}\n";
353 state->prev_env_language_ = data.par_language;
354 if (runparams.encoding != data.prev_encoding) {
355 runparams.encoding = data.prev_encoding;
356 os << setEncoding(data.prev_encoding->iconvName());
360 // Check whether we should output a blank line after the environment
361 if (!data.style->nextnoindent)
366 void TeXEnvironment(Buffer const & buf, Text const & text,
367 OutputParams const & runparams,
368 pit_type & pit, otexstream & os)
370 ParagraphList const & paragraphs = text.paragraphs();
371 ParagraphList::const_iterator ipar = paragraphs.constIterator(pit);
372 LYXERR(Debug::LATEX, "TeXEnvironment for paragraph " << pit);
374 Layout const & current_layout = ipar->layout();
375 depth_type const current_depth = ipar->params().depth();
376 Length const & current_left_indent = ipar->params().leftIndent();
378 // This is for debugging purpose at the end.
379 pit_type const par_begin = pit;
380 for (; pit < runparams.par_end; ++pit) {
381 ParagraphList::const_iterator par = paragraphs.constIterator(pit);
383 // check first if this is an higher depth paragraph.
384 bool go_out = (par->params().depth() < current_depth);
385 if (par->params().depth() == current_depth) {
386 // This environment is finished.
387 go_out |= (par->layout() != current_layout);
388 go_out |= (par->params().leftIndent() != current_left_indent);
391 // nothing to do here, restore pit and go out.
396 if (par->layout() == current_layout
397 && par->params().depth() == current_depth
398 && par->params().leftIndent() == current_left_indent) {
399 // We are still in the same environment so TeXOnePar and continue;
400 TeXOnePar(buf, text, pit, os, runparams);
404 // We are now in a deeper environment.
405 // Either par->layout() != current_layout
406 // Or par->params().depth() > current_depth
407 // Or par->params().leftIndent() != current_left_indent)
409 // FIXME This test should not be necessary.
410 // We should perhaps issue an error if it is.
411 bool const force_plain_layout = text.inset().forcePlainLayout();
412 Layout const & style = force_plain_layout
413 ? buf.params().documentClass().plainLayout()
416 if (!style.isEnvironment()) {
417 // This is a standard paragraph, no need to call TeXEnvironment.
418 TeXOnePar(buf, text, pit, os, runparams);
422 // This is a new environment.
423 TeXEnvironmentData const data =
424 prepareEnvironment(buf, text, par, os, runparams);
425 // Recursive call to TeXEnvironment!
426 TeXEnvironment(buf, text, runparams, pit, os);
427 finishEnvironment(os, runparams, data);
430 if (pit != runparams.par_end)
431 LYXERR(Debug::LATEX, "TeXEnvironment for paragraph " << par_begin << " done.");
435 void getArgInsets(otexstream & os, OutputParams const & runparams, Layout::LaTeXArgMap const & latexargs,
436 map<int, lyx::InsetArgument const *> ilist, vector<string> required, string const & prefix)
438 unsigned int const argnr = latexargs.size();
442 // Default and preset args are always output, so if they require
443 // other arguments, consider this.
444 for (auto const & larg : latexargs) {
445 Layout::latexarg const & arg = larg.second;
446 if ((!arg.presetarg.empty() || !arg.defaultarg.empty()) && !arg.requires.empty()) {
447 vector<string> req = getVectorFromString(arg.requires);
448 required.insert(required.end(), req.begin(), req.end());
452 for (unsigned int i = 1; i <= argnr; ++i) {
453 map<int, InsetArgument const *>::const_iterator lit = ilist.find(i);
454 bool inserted = false;
455 if (lit != ilist.end()) {
456 InsetArgument const * ins = (*lit).second;
458 Layout::LaTeXArgMap::const_iterator const lait =
459 latexargs.find(ins->name());
460 if (lait != latexargs.end()) {
461 Layout::latexarg arg = (*lait).second;
462 docstring ldelim = arg.mandatory ?
463 from_ascii("{") : from_ascii("[");
464 docstring rdelim = arg.mandatory ?
465 from_ascii("}") : from_ascii("]");
466 if (!arg.ldelim.empty())
468 if (!arg.rdelim.empty())
470 ins->latexArgument(os, runparams, ldelim, rdelim, arg.presetarg);
476 Layout::LaTeXArgMap::const_iterator lait = latexargs.begin();
477 Layout::LaTeXArgMap::const_iterator const laend = latexargs.end();
478 for (; lait != laend; ++lait) {
479 string const name = prefix + convert<string>(i);
480 if ((*lait).first == name) {
481 Layout::latexarg arg = (*lait).second;
482 docstring preset = arg.presetarg;
483 if (!arg.defaultarg.empty()) {
486 preset += arg.defaultarg;
489 docstring ldelim = arg.ldelim.empty() ?
490 from_ascii("{") : arg.ldelim;
491 docstring rdelim = arg.rdelim.empty() ?
492 from_ascii("}") : arg.rdelim;
493 os << ldelim << preset << rdelim;
494 } else if (!preset.empty()) {
495 docstring ldelim = arg.ldelim.empty() ?
496 from_ascii("[") : arg.ldelim;
497 docstring rdelim = arg.rdelim.empty() ?
498 from_ascii("]") : arg.rdelim;
499 os << ldelim << preset << rdelim;
500 } else if (find(required.begin(), required.end(),
501 (*lait).first) != required.end()) {
502 docstring ldelim = arg.ldelim.empty() ?
503 from_ascii("[") : arg.ldelim;
504 docstring rdelim = arg.rdelim.empty() ?
505 from_ascii("]") : arg.rdelim;
506 os << ldelim << rdelim;
519 void pushLanguageName(string const & lang_name, bool localswitch)
521 OutputState * state = getOutputState();
523 int nest_level = localswitch ? -state->nest_level_ : state->nest_level_;
524 state->lang_switch_depth_.push(nest_level);
525 state->open_polyglossia_lang_.push(lang_name);
529 void popLanguageName()
531 OutputState * state = getOutputState();
533 state->lang_switch_depth_.pop();
534 state->open_polyglossia_lang_.pop();
538 string const & openLanguageName()
540 OutputState * state = getOutputState();
542 return openLanguageName(state);
548 void addArgInsets(Paragraph const & par, string const & prefix,
549 Layout::LaTeXArgMap const & latexargs,
550 map<int, InsetArgument const *> & ilist,
551 vector<string> & required)
553 for (auto const & table : par.insetList()) {
554 InsetArgument const * arg = table.inset->asInsetArgument();
557 if (arg->name().empty()) {
558 LYXERR0("Error: Unnamed argument inset!");
561 string const name = prefix.empty() ?
562 arg->name() : split(arg->name(), ':');
563 // why converting into an integer?
564 unsigned int const nr = convert<unsigned int>(name);
565 if (ilist.find(nr) == ilist.end())
567 Layout::LaTeXArgMap::const_iterator const lit =
568 latexargs.find(arg->name());
569 if (lit != latexargs.end()) {
570 Layout::latexarg const & larg = lit->second;
571 vector<string> req = getVectorFromString(larg.requires);
572 move(req.begin(), req.end(), back_inserter(required));
580 void latexArgInsets(Paragraph const & par, otexstream & os,
581 OutputParams const & runparams,
582 Layout::LaTeXArgMap const & latexargs,
583 string const & prefix)
585 map<int, InsetArgument const *> ilist;
586 vector<string> required;
587 addArgInsets(par, prefix, latexargs, ilist, required);
588 getArgInsets(os, runparams, latexargs, ilist, required, prefix);
592 void latexArgInsets(ParagraphList const & pars,
593 ParagraphList::const_iterator pit,
594 otexstream & os, OutputParams const & runparams,
595 Layout::LaTeXArgMap const & latexargs,
596 string const & prefix)
598 map<int, InsetArgument const *> ilist;
599 vector<string> required;
601 depth_type const current_depth = pit->params().depth();
602 Layout const current_layout = pit->layout();
604 // get the first paragraph in sequence with this layout and depth
607 if (lyx::prev(pit, offset) == pars.begin())
609 ParagraphList::const_iterator priorpit = lyx::prev(pit, offset + 1);
610 if (priorpit->layout() == current_layout
611 && priorpit->params().depth() == current_depth)
617 ParagraphList::const_iterator spit = lyx::prev(pit, offset);
619 for (; spit != pars.end(); ++spit) {
620 if (spit->layout() != current_layout ||
621 spit->params().depth() < current_depth)
623 if (spit->params().depth() > current_depth)
625 addArgInsets(*spit, prefix, latexargs, ilist, required);
627 getArgInsets(os, runparams, latexargs, ilist, required, prefix);
631 void latexArgInsetsForParent(ParagraphList const & pars, otexstream & os,
632 OutputParams const & runparams,
633 Layout::LaTeXArgMap const & latexargs,
634 string const & prefix)
636 map<int, InsetArgument const *> ilist;
637 vector<string> required;
639 for (Paragraph const & par : pars) {
640 if (par.layout().hasArgs())
641 // The InsetArguments inside this paragraph refer to this paragraph
643 addArgInsets(par, prefix, latexargs, ilist, required);
645 getArgInsets(os, runparams, latexargs, ilist, required, prefix);
651 // output the proper paragraph start according to latextype.
652 void parStartCommand(Paragraph const & par, otexstream & os,
653 OutputParams const & runparams, Layout const & style)
655 switch (style.latextype) {
657 if (par.needsCProtection())
659 os << '\\' << from_ascii(style.latexname());
662 if (!style.latexargs().empty())
663 latexArgInsets(par, os, runparams, style.latexargs());
664 os << from_ascii(style.latexparam());
666 case LATEX_ITEM_ENVIRONMENT:
667 case LATEX_LIST_ENVIRONMENT:
668 os << "\\" + style.itemcommand();
670 if (!style.itemargs().empty())
671 latexArgInsets(par, os, runparams, style.itemargs(), "item:");
674 case LATEX_BIB_ENVIRONMENT:
675 // ignore this, the inset will write itself
684 // FIXME: this should be anonymous
685 void TeXOnePar(Buffer const & buf,
689 OutputParams const & runparams_in,
690 string const & everypar,
691 int start_pos, int end_pos,
694 BufferParams const & bparams = runparams_in.is_child
695 ? buf.masterParams() : buf.params();
696 ParagraphList const & paragraphs = text.paragraphs();
697 Paragraph const & par = paragraphs.at(pit);
698 // FIXME This check should not really be needed.
699 // Perhaps we should issue an error if it is.
700 Layout const & style = text.inset().forcePlainLayout() ?
701 bparams.documentClass().plainLayout() : par.layout();
703 if (style.inpreamble && !force)
706 LYXERR(Debug::LATEX, "TeXOnePar for paragraph " << pit << " ptr " << &par << " '"
709 OutputParams runparams = runparams_in;
710 runparams.isLastPar = (pit == pit_type(paragraphs.size() - 1));
711 // We reinitialze par begin and end to be on the safe side
712 // with embedded inset as we don't know if they set those
714 runparams.par_begin = 0;
715 runparams.par_end = 0;
717 bool const maintext = text.isMainText();
718 // we are at the beginning of an inset and CJK is already open;
719 // we count inheritation levels to get the inset nesting right.
720 OutputState * state = getOutputState();
721 if (pit == 0 && !maintext
722 && (state->cjk_inherited_ > 0 || state->open_encoding_ == CJK)) {
723 state->cjk_inherited_ += 1;
724 state->open_encoding_ = none;
727 if (text.inset().isPassThru()) {
728 Font const outerfont = text.outerFont(pit);
730 // No newline before first paragraph in this lyxtext
733 if (!text.inset().getLayout().parbreakIsNewline())
737 par.latex(bparams, outerfont, os, runparams, start_pos, end_pos, force);
741 Paragraph const * nextpar = runparams.isLastPar
742 ? 0 : ¶graphs.at(pit + 1);
744 bool const intitle_command = style.intitle && style.latextype == LATEX_COMMAND;
746 if (style.pass_thru) {
747 Font const outerfont = text.outerFont(pit);
748 parStartCommand(par, os, runparams, style);
752 par.latex(bparams, outerfont, os, runparams, start_pos, end_pos, force);
754 // I did not create a parEndCommand for this minuscule
755 // task because in the other user of parStartCommand
756 // the code is different (JMarc)
757 if (style.isCommand())
761 if (!style.parbreak_is_newline) {
763 } else if (nextpar && !style.isEnvironment()) {
764 Layout const nextstyle = text.inset().forcePlainLayout()
765 ? bparams.documentClass().plainLayout()
767 if (nextstyle.name() != style.name())
774 // This paragraph's language
775 Language const * const par_language = par.getParLanguage(bparams);
776 Language const * const nextpar_language = nextpar ?
777 nextpar->getParLanguage(bparams) : 0;
778 // The document's language
779 Language const * const doc_language = bparams.language;
780 // The language that was in effect when the environment this paragraph is
781 // inside of was opened
782 Language const * const outer_language =
783 (runparams.local_font != 0) ?
784 runparams.local_font->language() : doc_language;
786 Paragraph const * priorpar = (pit == 0) ? 0 : ¶graphs.at(pit - 1);
788 // The previous language that was in effect is the language of the
789 // previous paragraph, unless the previous paragraph is inside an
790 // environment with nesting depth greater than (or equal to, but with
791 // a different layout) the current one. If there is no previous
792 // paragraph, the previous language is the outer language.
793 bool const use_prev_env_language = state->prev_env_language_ != 0
795 && priorpar->layout().isEnvironment()
796 && (priorpar->getDepth() > par.getDepth()
797 || (priorpar->getDepth() == par.getDepth()
798 && priorpar->layout() != par.layout()));
799 Language const * const prev_language =
801 ? (use_prev_env_language ? state->prev_env_language_
802 : priorpar->getParLanguage(bparams))
806 bool const use_polyglossia = runparams.use_polyglossia;
807 string const par_lang = use_polyglossia ?
808 getPolyglossiaEnvName(par_language): par_language->babel();
809 string const prev_lang = use_polyglossia ?
810 getPolyglossiaEnvName(prev_language) : prev_language->babel();
811 string const outer_lang = use_polyglossia ?
812 getPolyglossiaEnvName(outer_language) : outer_language->babel();
813 string const nextpar_lang = nextpar_language ? (use_polyglossia ?
814 getPolyglossiaEnvName(nextpar_language) :
815 nextpar_language->babel()) : string();
816 string lang_begin_command = use_polyglossia ?
817 "\\begin{$$lang}$$opts" : lyxrc.language_command_begin;
818 string lang_end_command = use_polyglossia ?
819 "\\end{$$lang}" : lyxrc.language_command_end;
820 // the '%' is necessary to prevent unwanted whitespace
821 string lang_command_termination = "%\n";
822 bool const using_begin_end = use_polyglossia ||
823 !lang_end_command.empty();
825 // For InTitle commands, we need to switch the language inside the command
826 // (see #10849); thus open the command here.
827 if (intitle_command) {
828 parStartCommand(par, os, runparams, style);
832 // In some insets (such as Arguments), we cannot use \selectlanguage
833 bool const localswitch = text.inset().forceLocalFontSwitch()
834 || (using_begin_end && text.inset().forcePlainLayout());
836 lang_begin_command = use_polyglossia ?
837 "\\text$$lang$$opts{" : lyxrc.language_command_local;
838 lang_end_command = "}";
839 lang_command_termination.clear();
842 bool const localswitch_needed = localswitch && par_lang != outer_lang;
844 // localswitches need to be closed and reopened at each par
845 if ((par_lang != prev_lang || localswitch_needed)
846 // check if we already put language command in TeXEnvironment()
847 && !(style.isEnvironment()
848 && (pit == 0 || (priorpar->layout() != par.layout()
849 && priorpar->getDepth() <= par.getDepth())
850 || priorpar->getDepth() < par.getDepth()))) {
852 && (!using_begin_end || langOpenedAtThisLevel(state))
853 && !lang_end_command.empty()
854 && prev_lang != outer_lang
855 && !prev_lang.empty()
856 && (!using_begin_end || !style.isEnvironment())) {
857 os << from_ascii(subst(lang_end_command,
860 << lang_command_termination;
865 // We need to open a new language if we couldn't close the previous
866 // one (because there's no language_command_end); and even if we closed
867 // the previous one, if the current language is different than the
868 // outer_language (which is currently in effect once the previous one
870 if ((lang_end_command.empty() || par_lang != outer_lang
872 || (style.isEnvironment() && par_lang != prev_lang)))
873 && !par_lang.empty()) {
874 // If we're inside an inset, and that inset is within an \L or \R
875 // (or equivalents), then within the inset, too, any opposite
876 // language paragraph should appear within an \L or \R (in addition
877 // to, outside of, the normal language switch commands).
878 // This behavior is not correct for ArabTeX, though.
881 && par_language->lang() != "arabic_arabtex"
882 && outer_language->lang() != "arabic_arabtex"
883 // are we in an inset?
884 && runparams.local_font != 0
885 // is the inset within an \L or \R?
887 // FIXME: currently, we don't check this; this means that
888 // we'll have unnnecessary \L and \R commands, but that
889 // doesn't seem to hurt (though latex will complain)
891 // is this paragraph in the opposite direction?
892 && runparams.local_font->isRightToLeft() != par_language->rightToLeft()) {
893 // FIXME: I don't have a working copy of the Arabi package, so
894 // I'm not sure if the farsi and arabic_arabi stuff is correct
896 if (par_language->lang() == "farsi")
898 else if (outer_language->lang() == "farsi")
900 else if (par_language->lang() == "arabic_arabi")
902 else if (outer_language->lang() == "arabic_arabi")
904 // remaining RTL languages currently is hebrew
905 else if (par_language->rightToLeft())
910 // With CJK, the CJK tag has to be closed first (see below)
911 if (runparams.encoding->package() != Encoding::CJK
912 && (par_lang != openLanguageName(state) || localswitch)
913 && !par_lang.empty()) {
914 string bc = use_polyglossia ?
915 getPolyglossiaBegin(lang_begin_command, par_lang,
916 par_language->polyglossiaOpts(),
918 : subst(lang_begin_command, "$$lang", par_lang);
920 os << lang_command_termination;
922 pushLanguageName(par_lang, localswitch);
927 // Switch file encoding if necessary; no need to do this for "default"
928 // encoding, since this only affects the position of the outputted
929 // \inputencoding command; the encoding switch will occur when necessary
930 if (bparams.inputenc == "auto"
931 && !runparams.isFullUnicode() // Xe/LuaTeX use one document-wide encoding (see also switchEncoding())
932 && runparams.encoding->package() != Encoding::none) {
933 // Look ahead for future encoding changes.
934 // We try to output them at the beginning of the paragraph,
935 // since the \inputencoding command is not allowed e.g. in
936 // sections. For this reason we only set runparams.moving_arg
937 // after checking for the encoding change, otherwise the
938 // change would be always avoided by switchEncoding().
939 for (pos_type i = 0; i < par.size(); ++i) {
940 char_type const c = par.getChar(i);
941 Encoding const * const encoding =
942 par.getFontSettings(bparams, i).language()->encoding();
943 if (encoding->package() != Encoding::CJK
944 && runparams.encoding->package() == Encoding::inputenc
949 // All characters before c are in the ASCII range, and
950 // c is non-ASCII (but no inset), so change the
951 // encoding to that required by the language of c.
952 // With CJK, only add switch if we have CJK content at the beginning
954 if (i != 0 && encoding->package() == Encoding::CJK)
957 pair<bool, int> enc_switch = switchEncoding(os.os(),
958 bparams, runparams, *encoding);
959 // the following is necessary after a CJK environment in a multilingual
960 // context (nesting issue).
961 if (par_language->encoding()->package() == Encoding::CJK
962 && state->open_encoding_ != CJK && state->cjk_inherited_ == 0) {
963 os << "\\begin{CJK}{" << from_ascii(par_language->encoding()->latexName())
964 << "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
965 state->open_encoding_ = CJK;
967 if (encoding->package() != Encoding::none && enc_switch.first) {
968 if (enc_switch.second > 0) {
969 // the '%' is necessary to prevent unwanted whitespace
972 // With CJK, the CJK tag had to be closed first (see above)
973 if (runparams.encoding->package() == Encoding::CJK
974 && par_lang != openLanguageName(state)
975 && !par_lang.empty()) {
976 string bc = use_polyglossia ?
977 getPolyglossiaBegin(lang_begin_command, par_lang,
978 par_language->polyglossiaOpts(),
980 : subst(lang_begin_command, "$$lang", par_lang);
982 << lang_command_termination;
984 pushLanguageName(par_lang, localswitch);
986 runparams.encoding = encoding;
992 runparams.moving_arg |= style.needprotect;
993 Encoding const * const prev_encoding = runparams.encoding;
995 bool const useSetSpace = bparams.documentClass().provides("SetSpace");
996 if (par.allowParagraphCustomization()) {
997 if (par.params().startOfAppendix()) {
998 os << "\n\\appendix\n";
1001 // InTitle commands must use switches (not environments)
1002 // inside the commands (see #9332)
1003 if (style.intitle) {
1004 if (!par.params().spacing().isDefault())
1006 if (runparams.moving_arg)
1008 os << from_ascii(par.params().spacing().writeCmd(useSetSpace));
1011 if (!par.params().spacing().isDefault()
1012 && (pit == 0 || !priorpar->hasSameLayout(par)))
1014 os << from_ascii(par.params().spacing().writeEnvirBegin(useSetSpace))
1018 if (style.isCommand()) {
1024 // For InTitle commands, we already started the command before
1025 // the language switch
1026 if (!intitle_command)
1027 parStartCommand(par, os, runparams, style);
1029 Font const outerfont = text.outerFont(pit);
1032 os << from_utf8(everypar);
1033 par.latex(bparams, outerfont, os, runparams, start_pos, end_pos, force);
1035 Font const font = par.empty()
1036 ? par.getLayoutFont(bparams, outerfont)
1037 : par.getFont(bparams, par.size() - 1, outerfont);
1039 bool const is_command = style.isCommand();
1041 // InTitle commands need to be closed after the language has been closed.
1042 if (!intitle_command) {
1045 if (!style.postcommandargs().empty())
1046 latexArgInsets(par, os, runparams, style.postcommandargs(), "post:");
1047 if (runparams.encoding != prev_encoding) {
1048 runparams.encoding = prev_encoding;
1049 os << setEncoding(prev_encoding->iconvName());
1054 bool pending_newline = false;
1055 bool unskip_newline = false;
1056 bool close_lang_switch = false;
1057 switch (style.latextype) {
1058 case LATEX_ITEM_ENVIRONMENT:
1059 case LATEX_LIST_ENVIRONMENT:
1060 if ((nextpar && par_lang != nextpar_lang
1061 && nextpar->getDepth() == par.getDepth())
1062 || (atSameLastLangSwitchDepth(state) && nextpar
1063 && nextpar->getDepth() < par.getDepth()))
1064 close_lang_switch = using_begin_end;
1065 if (nextpar && par.params().depth() < nextpar->params().depth())
1066 pending_newline = true;
1068 case LATEX_ENVIRONMENT: {
1069 // if its the last paragraph of the current environment
1070 // skip it otherwise fall through
1072 && ((nextpar->layout() != par.layout()
1073 || nextpar->params().depth() != par.params().depth())
1074 || (!using_begin_end || par_lang != nextpar_lang)))
1076 close_lang_switch = using_begin_end;
1083 // we don't need it for the last paragraph and in InTitle commands!!!
1084 if (nextpar && !intitle_command)
1085 pending_newline = true;
1088 // InTitle commands use switches (not environments) for space settings
1089 if (par.allowParagraphCustomization() && !style.intitle) {
1090 if (!par.params().spacing().isDefault()
1091 && (runparams.isLastPar || !nextpar->hasSameLayout(par))) {
1092 if (pending_newline)
1095 string const endtag =
1096 par.params().spacing().writeEnvirEnd(useSetSpace);
1097 if (prefixIs(endtag, "\\end{"))
1100 os << from_ascii(endtag);
1101 pending_newline = true;
1105 // Closing the language is needed for the last paragraph in a given language
1106 // as well as for any InTitleCommand (since these set the language locally);
1107 // it is also needed if we're within an \L or \R that we may have opened above
1108 // (not necessarily in this paragraph) and are about to close.
1109 bool closing_rtl_ltr_environment = !using_begin_end
1111 && (par_language->lang() != "arabic_arabtex"
1112 && outer_language->lang() != "arabic_arabtex")
1113 // have we opened an \L or \R environment?
1114 && runparams.local_font != 0
1115 && runparams.local_font->isRightToLeft() != par_language->rightToLeft()
1116 // are we about to close the language?
1117 &&((nextpar && par_lang != nextpar_lang)
1118 || (runparams.isLastPar && par_lang != outer_lang));
1120 if (localswitch_needed
1121 || (intitle_command && using_begin_end)
1122 || closing_rtl_ltr_environment
1123 || ((runparams.isLastPar || close_lang_switch)
1124 && (par_lang != outer_lang || (using_begin_end
1125 && style.isEnvironment()
1126 && par_lang != nextpar_lang)))) {
1127 // Since \selectlanguage write the language to the aux file,
1128 // we need to reset the language at the end of footnote or
1131 if (!localswitch && (pending_newline || close_lang_switch))
1134 // when the paragraph uses CJK, the language has to be closed earlier
1135 if (font.language()->encoding()->package() != Encoding::CJK) {
1136 if (lang_end_command.empty()) {
1137 // If this is a child, we should restore the
1138 // master language after the last paragraph.
1139 Language const * const current_language =
1140 (runparams.isLastPar && runparams.master_language)
1141 ? runparams.master_language
1143 string const current_lang = use_polyglossia
1144 ? getPolyglossiaEnvName(current_language)
1145 : current_language->babel();
1146 if (!current_lang.empty()
1147 && current_lang != openLanguageName(state)) {
1148 string bc = use_polyglossia ?
1149 getPolyglossiaBegin(lang_begin_command, current_lang,
1150 current_language->polyglossiaOpts(),
1152 : subst(lang_begin_command, "$$lang", current_lang);
1154 pending_newline = !localswitch;
1155 unskip_newline = !localswitch;
1156 if (using_begin_end)
1157 pushLanguageName(current_lang, localswitch);
1159 } else if ((!using_begin_end ||
1160 langOpenedAtThisLevel(state)) &&
1161 !par_lang.empty()) {
1162 // If we are in an environment, we have to
1163 // close the "outer" language afterwards
1164 string const & cur_lang = openLanguageName(state);
1165 if (!style.isEnvironment()
1166 || (close_lang_switch
1167 && atSameLastLangSwitchDepth(state)
1168 && par_lang != outer_lang
1169 && (par_lang != cur_lang
1170 || (cur_lang != outer_lang
1172 && style != nextpar->layout())))
1173 || (atSameLastLangSwitchDepth(state)
1174 && state->lang_switch_depth_.size()
1175 && cur_lang != par_lang))
1177 if (using_begin_end && !localswitch)
1179 os << from_ascii(subst(
1183 pending_newline = !localswitch;
1184 unskip_newline = !localswitch;
1185 if (using_begin_end)
1191 if (closing_rtl_ltr_environment)
1194 // InTitle commands need to be closed after the language has been closed.
1195 if (intitle_command) {
1198 if (!style.postcommandargs().empty())
1199 latexArgInsets(par, os, runparams, style.postcommandargs(), "post:");
1200 if (runparams.encoding != prev_encoding) {
1201 runparams.encoding = prev_encoding;
1202 os << setEncoding(prev_encoding->iconvName());
1207 bool const last_was_separator =
1208 par.size() > 0 && par.isEnvSeparator(par.size() - 1);
1210 if (pending_newline) {
1212 // prevent unwanted whitespace
1214 if (!os.afterParbreak() && !last_was_separator)
1218 // if this is a CJK-paragraph and the next isn't, close CJK
1219 // also if the next paragraph is a multilingual environment (because of nesting)
1221 && state->open_encoding_ == CJK
1222 && (nextpar_language->encoding()->package() != Encoding::CJK
1223 || (nextpar->layout().isEnvironment() && nextpar->isMultiLingual(bparams)))
1224 // inbetween environments, CJK has to be closed later (nesting!)
1225 && (!style.isEnvironment() || !nextpar->layout().isEnvironment())) {
1226 os << "\\end{CJK}\n";
1227 state->open_encoding_ = none;
1230 // If this is the last paragraph, close the CJK environment
1231 // if necessary. If it's an environment, we'll have to \end that first.
1232 if (runparams.isLastPar && !style.isEnvironment()) {
1233 switch (state->open_encoding_) {
1235 // do nothing at the end of child documents
1236 if (maintext && buf.masterBuffer() != &buf)
1240 os << "\n\\end{CJK}\n";
1244 state->open_encoding_ = none;
1249 state->open_encoding_ = none;
1259 // If this is the last paragraph, and a local_font was set upon entering
1260 // the inset, and we're using "auto" or "default" encoding, and not
1261 // compiling with XeTeX or LuaTeX, the encoding
1262 // should be set back to that local_font's encoding.
1263 if (runparams.isLastPar && runparams_in.local_font != 0
1264 && runparams_in.encoding != runparams_in.local_font->language()->encoding()
1265 && (bparams.inputenc == "auto" || bparams.inputenc == "default")
1266 && !runparams.isFullUnicode()
1268 runparams_in.encoding = runparams_in.local_font->language()->encoding();
1269 os << setEncoding(runparams_in.encoding->iconvName());
1271 // Otherwise, the current encoding should be set for the next paragraph.
1273 runparams_in.encoding = runparams.encoding;
1276 // we don't need a newline for the last paragraph!!!
1277 // Note from JMarc: we will re-add a \n explicitly in
1278 // TeXEnvironment, because it is needed in this case
1279 if (nextpar && !os.afterParbreak() && !last_was_separator) {
1280 // Make sure to start a new line
1282 Layout const & next_layout = nextpar->layout();
1283 // A newline '\n' is always output before a command,
1284 // so avoid doubling it.
1285 if (!next_layout.isCommand()) {
1286 // Here we now try to avoid spurious empty lines by
1287 // outputting a paragraph break only if: (case 1) the
1288 // paragraph style allows parbreaks and no \begin, \end
1289 // or \item tags are going to follow (i.e., if the next
1290 // isn't the first or the current isn't the last
1291 // paragraph of an environment or itemize) and the
1292 // depth and alignment of the following paragraph is
1293 // unchanged, or (case 2) the following is a
1294 // non-environment paragraph whose depth is increased
1295 // but whose alignment is unchanged, or (case 3) the
1296 // paragraph is not an environment and the next one is a
1297 // non-itemize-like env at lower depth, or (case 4) the
1298 // paragraph is a command not followed by an environment
1299 // and the alignment of the current and next paragraph
1300 // is unchanged, or (case 5) the current alignment is
1301 // changed and a standard paragraph follows.
1302 DocumentClass const & tclass = bparams.documentClass();
1303 if ((style == next_layout
1304 && !style.parbreak_is_newline
1305 && !text.inset().getLayout().parbreakIsNewline()
1306 && style.latextype != LATEX_ITEM_ENVIRONMENT
1307 && style.latextype != LATEX_LIST_ENVIRONMENT
1308 && style.align == par.getAlign()
1309 && nextpar->getDepth() == par.getDepth()
1310 && nextpar->getAlign() == par.getAlign())
1311 || (!next_layout.isEnvironment()
1312 && nextpar->getDepth() > par.getDepth()
1313 && nextpar->getAlign() == par.getAlign())
1314 || (!style.isEnvironment()
1315 && next_layout.latextype == LATEX_ENVIRONMENT
1316 && nextpar->getDepth() < par.getDepth())
1317 || (style.isCommand()
1318 && !next_layout.isEnvironment()
1319 && style.align == par.getAlign()
1320 && next_layout.align == nextpar->getAlign())
1321 || (style.align != par.getAlign()
1322 && tclass.isDefaultLayout(next_layout))) {
1328 LYXERR(Debug::LATEX, "TeXOnePar for paragraph " << pit << " done; ptr "
1329 << &par << " next " << nextpar);
1335 // LaTeX all paragraphs
1336 void latexParagraphs(Buffer const & buf,
1339 OutputParams const & runparams,
1340 string const & everypar)
1342 LASSERT(runparams.par_begin <= runparams.par_end,
1343 { os << "% LaTeX Output Error\n"; return; } );
1345 BufferParams const & bparams = buf.params();
1346 BufferParams const & mparams = buf.masterParams();
1348 bool const maintext = text.isMainText();
1349 bool const is_child = buf.masterBuffer() != &buf;
1350 bool const multibib_child = maintext && is_child
1351 && mparams.multibib == "child";
1353 if (multibib_child && mparams.useBiblatex())
1354 os << "\\newrefsection";
1355 else if (multibib_child && mparams.useBibtopic()) {
1356 os << "\\begin{btUnit}\n";
1357 runparams.openbtUnit = true;
1360 // Open a CJK environment at the beginning of the main buffer
1361 // if the document's language is a CJK language
1362 // (but not in child documents)
1363 OutputState * state = getOutputState();
1364 if (maintext && !is_child
1365 && bparams.encoding().package() == Encoding::CJK) {
1366 os << "\\begin{CJK}{" << from_ascii(bparams.encoding().latexName())
1367 << "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
1368 state->open_encoding_ = CJK;
1370 // if "auto begin" is switched off, explicitly switch the
1371 // language on at start
1372 string const mainlang = runparams.use_polyglossia
1373 ? getPolyglossiaEnvName(bparams.language)
1374 : bparams.language->babel();
1375 string const lang_begin_command = runparams.use_polyglossia ?
1376 "\\begin{$$lang}$$opts" : lyxrc.language_command_begin;
1377 string const lang_end_command = runparams.use_polyglossia ?
1378 "\\end{$$lang}" : lyxrc.language_command_end;
1379 bool const using_begin_end = runparams.use_polyglossia ||
1380 !lang_end_command.empty();
1382 if (maintext && !lyxrc.language_auto_begin &&
1383 !mainlang.empty()) {
1385 string bc = runparams.use_polyglossia ?
1386 getPolyglossiaBegin(lang_begin_command, mainlang,
1387 bparams.language->polyglossiaOpts())
1388 : subst(lang_begin_command, "$$lang", mainlang);
1391 if (using_begin_end)
1392 pushLanguageName(mainlang);
1395 ParagraphList const & paragraphs = text.paragraphs();
1397 if (runparams.par_begin == runparams.par_end) {
1398 // The full doc will be exported but it is easier to just rely on
1399 // runparams range parameters that will be passed TeXEnvironment.
1400 runparams.par_begin = 0;
1401 runparams.par_end = paragraphs.size();
1404 pit_type pit = runparams.par_begin;
1405 // lastpit is for the language check after the loop.
1406 pit_type lastpit = pit;
1407 // variables used in the loop:
1408 bool was_title = false;
1409 bool already_title = false;
1410 DocumentClass const & tclass = bparams.documentClass();
1412 // Did we already warn about inTitle layout mixing? (we only warn once)
1413 bool gave_layout_warning = false;
1414 for (; pit < runparams.par_end; ++pit) {
1416 ParagraphList::const_iterator par = paragraphs.constIterator(pit);
1418 // FIXME This check should not be needed. We should
1419 // perhaps issue an error if it is.
1420 Layout const & layout = text.inset().forcePlainLayout() ?
1421 tclass.plainLayout() : par->layout();
1423 if (layout.intitle) {
1424 if (already_title) {
1425 if (!gave_layout_warning && !runparams.dryrun) {
1426 gave_layout_warning = true;
1427 frontend::Alert::warning(_("Error in latexParagraphs"),
1428 bformat(_("You are using at least one "
1429 "layout (%1$s) intended for the title, "
1430 "after using non-title layouts. This "
1431 "could lead to missing or incorrect output."
1434 } else if (!was_title) {
1436 if (tclass.titletype() == TITLE_ENVIRONMENT) {
1438 << from_ascii(tclass.titlename())
1442 } else if (was_title && !already_title && !layout.inpreamble) {
1443 if (tclass.titletype() == TITLE_ENVIRONMENT) {
1444 os << "\\end{" << from_ascii(tclass.titlename())
1448 os << "\\" << from_ascii(tclass.titlename())
1451 already_title = true;
1455 if (layout.isCommand() && !layout.latexname().empty()
1456 && layout.latexname() == bparams.multibib) {
1457 if (runparams.openbtUnit)
1458 os << "\\end{btUnit}\n";
1459 if (!bparams.useBiblatex()) {
1460 os << '\n' << "\\begin{btUnit}\n";
1461 runparams.openbtUnit = true;
1465 if (!layout.isEnvironment() && par->params().leftIndent().zero()) {
1466 // This is a standard top level paragraph, TeX it and continue.
1467 TeXOnePar(buf, text, pit, os, runparams, everypar);
1471 TeXEnvironmentData const data =
1472 prepareEnvironment(buf, text, par, os, runparams);
1473 // pit can be changed in TeXEnvironment.
1474 TeXEnvironment(buf, text, runparams, pit, os);
1475 finishEnvironment(os, runparams, data);
1478 if (pit == runparams.par_end) {
1479 // Make sure that the last paragraph is
1480 // correctly terminated (because TeXOnePar does
1481 // not add a \n in this case)
1485 // It might be that we only have a title in this document
1486 if (was_title && !already_title) {
1487 if (tclass.titletype() == TITLE_ENVIRONMENT) {
1488 os << "\\end{" << from_ascii(tclass.titlename())
1491 os << "\\" << from_ascii(tclass.titlename())
1496 if (maintext && !is_child && runparams.openbtUnit)
1497 os << "\\end{btUnit}\n";
1499 // if "auto end" is switched off, explicitly close the language at the end
1500 // but only if the last par is in a babel or polyglossia language
1501 if (maintext && !lyxrc.language_auto_end && !mainlang.empty() &&
1502 paragraphs.at(lastpit).getParLanguage(bparams)->encoding()->package() != Encoding::CJK) {
1503 os << from_utf8(subst(lang_end_command,
1507 if (using_begin_end)
1511 // If the last paragraph is an environment, we'll have to close
1512 // CJK at the very end to do proper nesting.
1513 if (maintext && !is_child && state->open_encoding_ == CJK) {
1514 os << "\\end{CJK}\n";
1515 state->open_encoding_ = none;
1517 // Likewise for polyglossia or when using begin/end commands
1518 string const & cur_lang = openLanguageName(state);
1519 if (maintext && !is_child && !cur_lang.empty()) {
1520 os << from_utf8(subst(lang_end_command,
1524 if (using_begin_end)
1528 // reset inherited encoding
1529 if (state->cjk_inherited_ > 0) {
1530 state->cjk_inherited_ -= 1;
1531 if (state->cjk_inherited_ == 0)
1532 state->open_encoding_ = CJK;
1535 if (multibib_child && mparams.useBibtopic()) {
1536 os << "\\end{btUnit}\n";
1537 runparams.openbtUnit = false;
1542 pair<bool, int> switchEncoding(odocstream & os, BufferParams const & bparams,
1543 OutputParams const & runparams, Encoding const & newEnc,
1546 // XeTeX/LuaTeX use only one encoding per document:
1547 // * with useNonTeXFonts: "utf8plain",
1548 // * with XeTeX and TeX fonts: "ascii" (inputenc fails),
1549 // * with LuaTeX and TeX fonts: only one encoding accepted by luainputenc.
1550 if (runparams.isFullUnicode() || newEnc.name() == "inherit")
1551 return make_pair(false, 0);
1553 Encoding const & oldEnc = *runparams.encoding;
1554 bool moving_arg = runparams.moving_arg;
1555 // If we switch from/to CJK, we need to switch anyway, despite custom inputenc
1556 bool const from_to_cjk =
1557 (oldEnc.package() == Encoding::CJK && newEnc.package() != Encoding::CJK)
1558 || (oldEnc.package() != Encoding::CJK && newEnc.package() == Encoding::CJK);
1559 if (!force && !from_to_cjk
1560 && ((bparams.inputenc != "auto" && bparams.inputenc != "default") || moving_arg))
1561 return make_pair(false, 0);
1563 // Do nothing if the encoding is unchanged.
1564 if (oldEnc.name() == newEnc.name())
1565 return make_pair(false, 0);
1567 // FIXME We ignore encoding switches from/to encodings that do
1568 // neither support the inputenc package nor the CJK package here.
1569 // This does of course only work in special cases (e.g. switch from
1570 // tis620-0 to latin1, but the text in latin1 contains ASCII only),
1571 // but it is the best we can do
1572 if (oldEnc.package() == Encoding::none
1573 || newEnc.package() == Encoding::none)
1574 return make_pair(false, 0);
1576 LYXERR(Debug::LATEX, "Changing LaTeX encoding from "
1577 << oldEnc.name() << " to " << newEnc.name());
1578 os << setEncoding(newEnc.iconvName());
1579 if (bparams.inputenc == "default")
1580 return make_pair(true, 0);
1582 docstring const inputenc_arg(from_ascii(newEnc.latexName()));
1583 OutputState * state = getOutputState();
1584 switch (newEnc.package()) {
1585 case Encoding::none:
1586 case Encoding::japanese:
1587 // shouldn't ever reach here, see above
1588 return make_pair(true, 0);
1589 case Encoding::inputenc: {
1590 int count = inputenc_arg.length();
1591 if (oldEnc.package() == Encoding::CJK &&
1592 state->open_encoding_ == CJK) {
1594 state->open_encoding_ = none;
1597 else if (oldEnc.package() == Encoding::inputenc &&
1598 state->open_encoding_ == inputenc) {
1600 state->open_encoding_ = none;
1603 if (runparams.local_font != 0
1604 && oldEnc.package() == Encoding::CJK) {
1605 // within insets, \inputenc switches need
1606 // to be embraced within \bgroup...\egroup;
1610 state->open_encoding_ = inputenc;
1612 // with the japanese option, inputenc is omitted.
1613 if (runparams.use_japanese)
1614 return make_pair(true, count);
1615 os << "\\inputencoding{" << inputenc_arg << '}';
1616 return make_pair(true, count + 16);
1618 case Encoding::CJK: {
1619 int count = inputenc_arg.length();
1620 if (oldEnc.package() == Encoding::CJK &&
1621 state->open_encoding_ == CJK) {
1625 if (oldEnc.package() == Encoding::inputenc &&
1626 state->open_encoding_ == inputenc) {
1630 os << "\\begin{CJK}{" << inputenc_arg << "}{"
1631 << from_ascii(bparams.fonts_cjk) << "}";
1632 state->open_encoding_ = CJK;
1633 return make_pair(true, count + 15);
1636 // Dead code to avoid a warning:
1637 return make_pair(true, 0);