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 par = paragraphs.constIterator(pit);
372 LYXERR(Debug::LATEX, "TeXEnvironment for paragraph " << pit);
374 Layout const & current_layout = par->layout();
375 depth_type const current_depth = par->params().depth();
376 Length const & current_left_indent = par->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 Layout::LaTeXArgMap::const_iterator lit = latexargs.begin();
445 Layout::LaTeXArgMap::const_iterator const lend = latexargs.end();
446 for (; lit != lend; ++lit) {
447 Layout::latexarg arg = (*lit).second;
448 if ((!arg.presetarg.empty() || !arg.defaultarg.empty()) && !arg.requires.empty()) {
449 vector<string> req = getVectorFromString(arg.requires);
450 required.insert(required.end(), req.begin(), req.end());
454 for (unsigned int i = 1; i <= argnr; ++i) {
455 map<int, InsetArgument const *>::const_iterator lit = ilist.find(i);
456 bool inserted = false;
457 if (lit != ilist.end()) {
458 InsetArgument const * ins = (*lit).second;
460 Layout::LaTeXArgMap::const_iterator const lait =
461 latexargs.find(ins->name());
462 if (lait != latexargs.end()) {
463 Layout::latexarg arg = (*lait).second;
464 docstring ldelim = arg.mandatory ?
465 from_ascii("{") : from_ascii("[");
466 docstring rdelim = arg.mandatory ?
467 from_ascii("}") : from_ascii("]");
468 if (!arg.ldelim.empty())
470 if (!arg.rdelim.empty())
472 ins->latexArgument(os, runparams, ldelim, rdelim, arg.presetarg);
478 Layout::LaTeXArgMap::const_iterator lait = latexargs.begin();
479 Layout::LaTeXArgMap::const_iterator const laend = latexargs.end();
480 for (; lait != laend; ++lait) {
481 string const name = prefix + convert<string>(i);
482 if ((*lait).first == name) {
483 Layout::latexarg arg = (*lait).second;
484 docstring preset = arg.presetarg;
485 if (!arg.defaultarg.empty()) {
488 preset += arg.defaultarg;
491 docstring ldelim = arg.ldelim.empty() ?
492 from_ascii("{") : arg.ldelim;
493 docstring rdelim = arg.rdelim.empty() ?
494 from_ascii("}") : arg.rdelim;
495 os << ldelim << preset << rdelim;
496 } else if (!preset.empty()) {
497 docstring ldelim = arg.ldelim.empty() ?
498 from_ascii("[") : arg.ldelim;
499 docstring rdelim = arg.rdelim.empty() ?
500 from_ascii("]") : arg.rdelim;
501 os << ldelim << preset << rdelim;
502 } else if (find(required.begin(), required.end(),
503 (*lait).first) != required.end()) {
504 docstring ldelim = arg.ldelim.empty() ?
505 from_ascii("[") : arg.ldelim;
506 docstring rdelim = arg.rdelim.empty() ?
507 from_ascii("]") : arg.rdelim;
508 os << ldelim << rdelim;
521 void pushLanguageName(string const & lang_name, bool localswitch)
523 OutputState * state = getOutputState();
525 int nest_level = localswitch ? -state->nest_level_ : state->nest_level_;
526 state->lang_switch_depth_.push(nest_level);
527 state->open_polyglossia_lang_.push(lang_name);
531 void popLanguageName()
533 OutputState * state = getOutputState();
535 state->lang_switch_depth_.pop();
536 state->open_polyglossia_lang_.pop();
540 string const & openLanguageName()
542 OutputState * state = getOutputState();
544 return openLanguageName(state);
550 void addArgInsets(Paragraph const & par, string const & prefix,
551 Layout::LaTeXArgMap const & latexargs,
552 map<int, InsetArgument const *> & ilist,
553 vector<string> & required)
555 for (auto const & table : par.insetList()) {
556 InsetArgument const * arg = table.inset->asInsetArgument();
559 if (arg->name().empty()) {
560 LYXERR0("Error: Unnamed argument inset!");
563 string const name = prefix.empty() ?
564 arg->name() : split(arg->name(), ':');
565 // why converting into an integer?
566 unsigned int const nr = convert<unsigned int>(name);
567 if (ilist.find(nr) == ilist.end())
569 Layout::LaTeXArgMap::const_iterator const lit =
570 latexargs.find(arg->name());
571 if (lit != latexargs.end()) {
572 Layout::latexarg const & larg = lit->second;
573 vector<string> req = getVectorFromString(larg.requires);
574 move(req.begin(), req.end(), back_inserter(required));
582 void latexArgInsets(Paragraph const & par, otexstream & os,
583 OutputParams const & runparams,
584 Layout::LaTeXArgMap const & latexargs,
585 string const & prefix)
587 map<int, InsetArgument const *> ilist;
588 vector<string> required;
589 addArgInsets(par, prefix, latexargs, ilist, required);
590 getArgInsets(os, runparams, latexargs, ilist, required, prefix);
594 void latexArgInsets(ParagraphList const & pars,
595 ParagraphList::const_iterator pit,
596 otexstream & os, OutputParams const & runparams,
597 Layout::LaTeXArgMap const & latexargs,
598 string const & prefix)
600 map<int, InsetArgument const *> ilist;
601 vector<string> required;
603 depth_type const current_depth = pit->params().depth();
604 Layout const current_layout = pit->layout();
606 // get the first paragraph in sequence with this layout and depth
609 if (lyx::prev(pit, offset) == pars.begin())
611 ParagraphList::const_iterator priorpit = lyx::prev(pit, offset + 1);
612 if (priorpit->layout() == current_layout
613 && priorpit->params().depth() == current_depth)
619 ParagraphList::const_iterator spit = lyx::prev(pit, offset);
621 for (; spit != pars.end(); ++spit) {
622 if (spit->layout() != current_layout ||
623 spit->params().depth() < current_depth)
625 if (spit->params().depth() > current_depth)
627 addArgInsets(*spit, prefix, latexargs, ilist, required);
629 getArgInsets(os, runparams, latexargs, ilist, required, prefix);
633 void latexArgInsetsForParent(ParagraphList const & pars, otexstream & os,
634 OutputParams const & runparams,
635 Layout::LaTeXArgMap const & latexargs,
636 string const & prefix)
638 map<int, InsetArgument const *> ilist;
639 vector<string> required;
641 for (Paragraph const & par : pars) {
642 if (par.layout().hasArgs())
643 // The InsetArguments inside this paragraph refer to this paragraph
645 addArgInsets(par, prefix, latexargs, ilist, required);
647 getArgInsets(os, runparams, latexargs, ilist, required, prefix);
653 // output the proper paragraph start according to latextype.
654 void parStartCommand(Paragraph const & par, otexstream & os,
655 OutputParams const & runparams, Layout const & style)
657 switch (style.latextype) {
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 // Note further that we take the outer language also if the prior par
794 // is PassThru, since in that case it has latex_language, and all secondary
795 // languages have been closed (#10793).
796 bool const use_prev_env_language = state->prev_env_language_ != 0
798 && priorpar->layout().isEnvironment()
799 && (priorpar->getDepth() > par.getDepth()
800 || (priorpar->getDepth() == par.getDepth()
801 && priorpar->layout() != par.layout()));
802 Language const * const prev_language =
803 (priorpar && !priorpar->isPassThru())
804 ? (use_prev_env_language ? state->prev_env_language_
805 : priorpar->getParLanguage(bparams))
808 bool const use_polyglossia = runparams.use_polyglossia;
809 string const par_lang = use_polyglossia ?
810 getPolyglossiaEnvName(par_language): par_language->babel();
811 string const prev_lang = use_polyglossia ?
812 getPolyglossiaEnvName(prev_language) : prev_language->babel();
813 string const outer_lang = use_polyglossia ?
814 getPolyglossiaEnvName(outer_language) : outer_language->babel();
815 string const nextpar_lang = nextpar_language ? (use_polyglossia ?
816 getPolyglossiaEnvName(nextpar_language) :
817 nextpar_language->babel()) : string();
818 string lang_begin_command = use_polyglossia ?
819 "\\begin{$$lang}$$opts" : lyxrc.language_command_begin;
820 string lang_end_command = use_polyglossia ?
821 "\\end{$$lang}" : lyxrc.language_command_end;
822 // the '%' is necessary to prevent unwanted whitespace
823 string lang_command_termination = "%\n";
824 bool const using_begin_end = use_polyglossia ||
825 !lang_end_command.empty();
827 // For InTitle commands, we need to switch the language inside the command
828 // (see #10849); thus open the command here.
829 if (intitle_command) {
830 parStartCommand(par, os, runparams, style);
834 // In some insets (such as Arguments), we cannot use \selectlanguage.
835 // Also, if an RTL language is set via environment in polyglossia,
836 // only a nested \\text<lang> command will reset the direction for LTR
837 // languages (see # 10111).
838 bool const in_polyglossia_rtl_env =
840 && runparams.local_font != 0
841 && outer_language->rightToLeft()
842 && !par_language->rightToLeft();
843 bool const localswitch = text.inset().forceLocalFontSwitch()
844 || (using_begin_end && text.inset().forcePlainLayout())
845 || in_polyglossia_rtl_env;
847 lang_begin_command = use_polyglossia ?
848 "\\text$$lang$$opts{" : lyxrc.language_command_local;
849 lang_end_command = "}";
850 lang_command_termination.clear();
853 bool const localswitch_needed = localswitch && par_lang != outer_lang;
855 // localswitches need to be closed and reopened at each par
856 if ((par_lang != prev_lang || localswitch_needed)
857 // check if we already put language command in TeXEnvironment()
858 && !(style.isEnvironment()
859 && (pit == 0 || (priorpar->layout() != par.layout()
860 && priorpar->getDepth() <= par.getDepth())
861 || priorpar->getDepth() < par.getDepth()))) {
863 && (!using_begin_end || langOpenedAtThisLevel(state))
864 && !lang_end_command.empty()
865 && prev_lang != outer_lang
866 && !prev_lang.empty()
867 && (!using_begin_end || !style.isEnvironment())) {
868 os << from_ascii(subst(lang_end_command,
871 << lang_command_termination;
876 // We need to open a new language if we couldn't close the previous
877 // one (because there's no language_command_end); and even if we closed
878 // the previous one, if the current language is different than the
879 // outer_language (which is currently in effect once the previous one
881 if ((lang_end_command.empty() || par_lang != outer_lang
883 || (style.isEnvironment() && par_lang != prev_lang)))
884 && !par_lang.empty()) {
885 // If we're inside an inset, and that inset is within an \L or \R
886 // (or equivalents), then within the inset, too, any opposite
887 // language paragraph should appear within an \L or \R (in addition
888 // to, outside of, the normal language switch commands).
889 // This behavior is not correct for ArabTeX, though.
892 && par_language->lang() != "arabic_arabtex"
893 && outer_language->lang() != "arabic_arabtex"
894 // are we in an inset?
895 && runparams.local_font != 0
896 // is the inset within an \L or \R?
898 // FIXME: currently, we don't check this; this means that
899 // we'll have unnnecessary \L and \R commands, but that
900 // doesn't seem to hurt (though latex will complain)
902 // is this paragraph in the opposite direction?
903 && runparams.local_font->isRightToLeft() != par_language->rightToLeft()) {
904 // FIXME: I don't have a working copy of the Arabi package, so
905 // I'm not sure if the farsi and arabic_arabi stuff is correct
907 if (par_language->lang() == "farsi")
909 else if (outer_language->lang() == "farsi")
911 else if (par_language->lang() == "arabic_arabi")
913 else if (outer_language->lang() == "arabic_arabi")
915 // remaining RTL languages currently is hebrew
916 else if (par_language->rightToLeft())
921 // With CJK, the CJK tag has to be closed first (see below)
922 if (runparams.encoding->package() != Encoding::CJK
923 && (par_lang != openLanguageName(state) || localswitch)
924 && !par_lang.empty()) {
925 string bc = use_polyglossia ?
926 getPolyglossiaBegin(lang_begin_command, par_lang,
927 par_language->polyglossiaOpts(),
929 : subst(lang_begin_command, "$$lang", par_lang);
931 os << lang_command_termination;
933 pushLanguageName(par_lang, localswitch);
938 // Switch file encoding if necessary; no need to do this for "default"
939 // encoding, since this only affects the position of the outputted
940 // \inputencoding command; the encoding switch will occur when necessary
941 if (bparams.inputenc == "auto"
942 && !runparams.isFullUnicode() // Xe/LuaTeX use one document-wide encoding (see also switchEncoding())
943 && runparams.encoding->package() != Encoding::none) {
944 // Look ahead for future encoding changes.
945 // We try to output them at the beginning of the paragraph,
946 // since the \inputencoding command is not allowed e.g. in
947 // sections. For this reason we only set runparams.moving_arg
948 // after checking for the encoding change, otherwise the
949 // change would be always avoided by switchEncoding().
950 for (pos_type i = 0; i < par.size(); ++i) {
951 char_type const c = par.getChar(i);
952 Encoding const * const encoding =
953 par.getFontSettings(bparams, i).language()->encoding();
954 if (encoding->package() != Encoding::CJK
955 && runparams.encoding->package() == Encoding::inputenc
960 // All characters before c are in the ASCII range, and
961 // c is non-ASCII (but no inset), so change the
962 // encoding to that required by the language of c.
963 // With CJK, only add switch if we have CJK content at the beginning
965 if (i != 0 && encoding->package() == Encoding::CJK)
968 pair<bool, int> enc_switch = switchEncoding(os.os(),
969 bparams, runparams, *encoding);
970 // the following is necessary after a CJK environment in a multilingual
971 // context (nesting issue).
972 if (par_language->encoding()->package() == Encoding::CJK
973 && state->open_encoding_ != CJK && state->cjk_inherited_ == 0) {
974 os << "\\begin{CJK}{" << from_ascii(par_language->encoding()->latexName())
975 << "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
976 state->open_encoding_ = CJK;
978 if (encoding->package() != Encoding::none && enc_switch.first) {
979 if (enc_switch.second > 0) {
980 // the '%' is necessary to prevent unwanted whitespace
983 // With CJK, the CJK tag had to be closed first (see above)
984 if (runparams.encoding->package() == Encoding::CJK
985 && par_lang != openLanguageName(state)
986 && !par_lang.empty()) {
987 string bc = use_polyglossia ?
988 getPolyglossiaBegin(lang_begin_command, par_lang,
989 par_language->polyglossiaOpts(),
991 : subst(lang_begin_command, "$$lang", par_lang);
993 << lang_command_termination;
995 pushLanguageName(par_lang, localswitch);
997 runparams.encoding = encoding;
1003 runparams.moving_arg |= style.needprotect;
1004 Encoding const * const prev_encoding = runparams.encoding;
1006 bool const useSetSpace = bparams.documentClass().provides("SetSpace");
1007 if (par.allowParagraphCustomization()) {
1008 if (par.params().startOfAppendix()) {
1009 os << "\n\\appendix\n";
1012 // InTitle commands must use switches (not environments)
1013 // inside the commands (see #9332)
1014 if (style.intitle) {
1015 if (!par.params().spacing().isDefault())
1017 if (runparams.moving_arg)
1019 os << from_ascii(par.params().spacing().writeCmd(useSetSpace));
1022 if (!par.params().spacing().isDefault()
1023 && (pit == 0 || !priorpar->hasSameLayout(par)))
1025 os << from_ascii(par.params().spacing().writeEnvirBegin(useSetSpace))
1029 if (style.isCommand()) {
1035 // For InTitle commands, we already started the command before
1036 // the language switch
1037 if (!intitle_command)
1038 parStartCommand(par, os, runparams, style);
1040 Font const outerfont = text.outerFont(pit);
1043 os << from_utf8(everypar);
1044 par.latex(bparams, outerfont, os, runparams, start_pos, end_pos, force);
1046 Font const font = par.empty()
1047 ? par.getLayoutFont(bparams, outerfont)
1048 : par.getFont(bparams, par.size() - 1, outerfont);
1050 bool const is_command = style.isCommand();
1052 // InTitle commands need to be closed after the language has been closed.
1053 if (!intitle_command) {
1056 if (!style.postcommandargs().empty())
1057 latexArgInsets(par, os, runparams, style.postcommandargs(), "post:");
1058 if (runparams.encoding != prev_encoding) {
1059 runparams.encoding = prev_encoding;
1060 os << setEncoding(prev_encoding->iconvName());
1065 bool pending_newline = false;
1066 bool unskip_newline = false;
1067 bool close_lang_switch = false;
1068 switch (style.latextype) {
1069 case LATEX_ITEM_ENVIRONMENT:
1070 case LATEX_LIST_ENVIRONMENT:
1071 if ((nextpar && par_lang != nextpar_lang
1072 && nextpar->getDepth() == par.getDepth())
1073 || (atSameLastLangSwitchDepth(state) && nextpar
1074 && nextpar->getDepth() < par.getDepth()))
1075 close_lang_switch = using_begin_end;
1076 if (nextpar && par.params().depth() < nextpar->params().depth())
1077 pending_newline = true;
1079 case LATEX_ENVIRONMENT: {
1080 // if its the last paragraph of the current environment
1081 // skip it otherwise fall through
1083 && ((nextpar->layout() != par.layout()
1084 || nextpar->params().depth() != par.params().depth())
1085 || (!using_begin_end || par_lang != nextpar_lang)))
1087 close_lang_switch = using_begin_end;
1094 // we don't need it for the last paragraph and in InTitle commands!!!
1095 if (nextpar && !intitle_command)
1096 pending_newline = true;
1099 // InTitle commands use switches (not environments) for space settings
1100 if (par.allowParagraphCustomization() && !style.intitle) {
1101 if (!par.params().spacing().isDefault()
1102 && (runparams.isLastPar || !nextpar->hasSameLayout(par))) {
1103 if (pending_newline)
1106 string const endtag =
1107 par.params().spacing().writeEnvirEnd(useSetSpace);
1108 if (prefixIs(endtag, "\\end{"))
1111 os << from_ascii(endtag);
1112 pending_newline = true;
1116 // Closing the language is needed for the last paragraph in a given language
1117 // as well as for any InTitleCommand (since these set the language locally);
1118 // it is also needed if we're within an \L or \R that we may have opened above
1119 // (not necessarily in this paragraph) and are about to close.
1120 bool closing_rtl_ltr_environment = !using_begin_end
1122 && (par_language->lang() != "arabic_arabtex"
1123 && outer_language->lang() != "arabic_arabtex")
1124 // have we opened an \L or \R environment?
1125 && runparams.local_font != 0
1126 && runparams.local_font->isRightToLeft() != par_language->rightToLeft()
1127 // are we about to close the language?
1128 &&((nextpar && par_lang != nextpar_lang)
1129 || (runparams.isLastPar && par_lang != outer_lang));
1131 if (localswitch_needed
1132 || (intitle_command && using_begin_end)
1133 || closing_rtl_ltr_environment
1134 || ((runparams.isLastPar || close_lang_switch)
1135 && (par_lang != outer_lang || (using_begin_end
1136 && style.isEnvironment()
1137 && par_lang != nextpar_lang)))) {
1138 // Since \selectlanguage write the language to the aux file,
1139 // we need to reset the language at the end of footnote or
1142 if (!localswitch && (pending_newline || close_lang_switch))
1145 // when the paragraph uses CJK, the language has to be closed earlier
1146 if (font.language()->encoding()->package() != Encoding::CJK) {
1147 if (lang_end_command.empty()) {
1148 // If this is a child, we should restore the
1149 // master language after the last paragraph.
1150 Language const * const current_language =
1151 (runparams.isLastPar && runparams.master_language)
1152 ? runparams.master_language
1154 string const current_lang = use_polyglossia
1155 ? getPolyglossiaEnvName(current_language)
1156 : current_language->babel();
1157 if (!current_lang.empty()
1158 && current_lang != openLanguageName(state)) {
1159 string bc = use_polyglossia ?
1160 getPolyglossiaBegin(lang_begin_command, current_lang,
1161 current_language->polyglossiaOpts(),
1163 : subst(lang_begin_command, "$$lang", current_lang);
1165 pending_newline = !localswitch;
1166 unskip_newline = !localswitch;
1167 if (using_begin_end)
1168 pushLanguageName(current_lang, localswitch);
1170 } else if ((!using_begin_end ||
1171 langOpenedAtThisLevel(state)) &&
1172 !par_lang.empty()) {
1173 // If we are in an environment, we have to
1174 // close the "outer" language afterwards
1175 string const & cur_lang = openLanguageName(state);
1176 if (!style.isEnvironment()
1177 || (close_lang_switch
1178 && atSameLastLangSwitchDepth(state)
1179 && par_lang != outer_lang
1180 && (par_lang != cur_lang
1181 || (cur_lang != outer_lang
1183 && style != nextpar->layout())))
1184 || (atSameLastLangSwitchDepth(state)
1185 && state->lang_switch_depth_.size()
1186 && cur_lang != par_lang)
1187 || in_polyglossia_rtl_env)
1189 if (using_begin_end && !localswitch)
1191 os << from_ascii(subst(
1195 pending_newline = !localswitch;
1196 unskip_newline = !localswitch;
1197 if (using_begin_end)
1203 if (closing_rtl_ltr_environment)
1206 // InTitle commands need to be closed after the language has been closed.
1207 if (intitle_command) {
1210 if (!style.postcommandargs().empty())
1211 latexArgInsets(par, os, runparams, style.postcommandargs(), "post:");
1212 if (runparams.encoding != prev_encoding) {
1213 runparams.encoding = prev_encoding;
1214 os << setEncoding(prev_encoding->iconvName());
1219 bool const last_was_separator =
1220 par.size() > 0 && par.isEnvSeparator(par.size() - 1);
1222 if (pending_newline) {
1224 // prevent unwanted whitespace
1226 if (!os.afterParbreak() && !last_was_separator)
1230 // if this is a CJK-paragraph and the next isn't, close CJK
1231 // also if the next paragraph is a multilingual environment (because of nesting)
1233 && state->open_encoding_ == CJK
1234 && (nextpar_language->encoding()->package() != Encoding::CJK
1235 || (nextpar->layout().isEnvironment() && nextpar->isMultiLingual(bparams)))
1236 // inbetween environments, CJK has to be closed later (nesting!)
1237 && (!style.isEnvironment() || !nextpar->layout().isEnvironment())) {
1238 os << "\\end{CJK}\n";
1239 state->open_encoding_ = none;
1242 // If this is the last paragraph, close the CJK environment
1243 // if necessary. If it's an environment, we'll have to \end that first.
1244 if (runparams.isLastPar && !style.isEnvironment()) {
1245 switch (state->open_encoding_) {
1247 // do nothing at the end of child documents
1248 if (maintext && buf.masterBuffer() != &buf)
1252 os << "\n\\end{CJK}\n";
1256 state->open_encoding_ = none;
1261 state->open_encoding_ = none;
1271 // If this is the last paragraph, and a local_font was set upon entering
1272 // the inset, and we're using "auto" or "default" encoding, and not
1273 // compiling with XeTeX or LuaTeX, the encoding
1274 // should be set back to that local_font's encoding.
1275 if (runparams.isLastPar && runparams_in.local_font != 0
1276 && runparams_in.encoding != runparams_in.local_font->language()->encoding()
1277 && (bparams.inputenc == "auto" || bparams.inputenc == "default")
1278 && !runparams.isFullUnicode()
1280 runparams_in.encoding = runparams_in.local_font->language()->encoding();
1281 os << setEncoding(runparams_in.encoding->iconvName());
1283 // Otherwise, the current encoding should be set for the next paragraph.
1285 runparams_in.encoding = runparams.encoding;
1288 // we don't need a newline for the last paragraph!!!
1289 // Note from JMarc: we will re-add a \n explicitly in
1290 // TeXEnvironment, because it is needed in this case
1291 if (nextpar && !os.afterParbreak() && !last_was_separator) {
1292 // Make sure to start a new line
1294 Layout const & next_layout = nextpar->layout();
1295 // A newline '\n' is always output before a command,
1296 // so avoid doubling it.
1297 if (!next_layout.isCommand()) {
1298 // Here we now try to avoid spurious empty lines by
1299 // outputting a paragraph break only if: (case 1) the
1300 // paragraph style allows parbreaks and no \begin, \end
1301 // or \item tags are going to follow (i.e., if the next
1302 // isn't the first or the current isn't the last
1303 // paragraph of an environment or itemize) and the
1304 // depth and alignment of the following paragraph is
1305 // unchanged, or (case 2) the following is a
1306 // non-environment paragraph whose depth is increased
1307 // but whose alignment is unchanged, or (case 3) the
1308 // paragraph is not an environment and the next one is a
1309 // non-itemize-like env at lower depth, or (case 4) the
1310 // paragraph is a command not followed by an environment
1311 // and the alignment of the current and next paragraph
1312 // is unchanged, or (case 5) the current alignment is
1313 // changed and a standard paragraph follows.
1314 DocumentClass const & tclass = bparams.documentClass();
1315 if ((style == next_layout
1316 && !style.parbreak_is_newline
1317 && !text.inset().getLayout().parbreakIsNewline()
1318 && style.latextype != LATEX_ITEM_ENVIRONMENT
1319 && style.latextype != LATEX_LIST_ENVIRONMENT
1320 && style.align == par.getAlign()
1321 && nextpar->getDepth() == par.getDepth()
1322 && nextpar->getAlign() == par.getAlign())
1323 || (!next_layout.isEnvironment()
1324 && nextpar->getDepth() > par.getDepth()
1325 && nextpar->getAlign() == par.getAlign())
1326 || (!style.isEnvironment()
1327 && next_layout.latextype == LATEX_ENVIRONMENT
1328 && nextpar->getDepth() < par.getDepth())
1329 || (style.isCommand()
1330 && !next_layout.isEnvironment()
1331 && style.align == par.getAlign()
1332 && next_layout.align == nextpar->getAlign())
1333 || (style.align != par.getAlign()
1334 && tclass.isDefaultLayout(next_layout))) {
1340 LYXERR(Debug::LATEX, "TeXOnePar for paragraph " << pit << " done; ptr "
1341 << &par << " next " << nextpar);
1347 // LaTeX all paragraphs
1348 void latexParagraphs(Buffer const & buf,
1351 OutputParams const & runparams,
1352 string const & everypar)
1354 LASSERT(runparams.par_begin <= runparams.par_end,
1355 { os << "% LaTeX Output Error\n"; return; } );
1357 BufferParams const & bparams = buf.params();
1358 BufferParams const & mparams = buf.masterParams();
1360 bool const maintext = text.isMainText();
1361 bool const is_child = buf.masterBuffer() != &buf;
1362 bool const multibib_child = maintext && is_child
1363 && mparams.multibib == "child";
1365 if (multibib_child && mparams.useBiblatex())
1366 os << "\\newrefsection";
1367 else if (multibib_child && mparams.useBibtopic()) {
1368 os << "\\begin{btUnit}\n";
1369 runparams.openbtUnit = true;
1372 // Open a CJK environment at the beginning of the main buffer
1373 // if the document's language is a CJK language
1374 // (but not in child documents)
1375 OutputState * state = getOutputState();
1376 if (maintext && !is_child
1377 && bparams.encoding().package() == Encoding::CJK) {
1378 os << "\\begin{CJK}{" << from_ascii(bparams.encoding().latexName())
1379 << "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
1380 state->open_encoding_ = CJK;
1382 // if "auto begin" is switched off, explicitly switch the
1383 // language on at start
1384 string const mainlang = runparams.use_polyglossia
1385 ? getPolyglossiaEnvName(bparams.language)
1386 : bparams.language->babel();
1387 string const lang_begin_command = runparams.use_polyglossia ?
1388 "\\begin{$$lang}$$opts" : lyxrc.language_command_begin;
1389 string const lang_end_command = runparams.use_polyglossia ?
1390 "\\end{$$lang}" : lyxrc.language_command_end;
1391 bool const using_begin_end = runparams.use_polyglossia ||
1392 !lang_end_command.empty();
1394 if (maintext && !lyxrc.language_auto_begin &&
1395 !mainlang.empty()) {
1397 string bc = runparams.use_polyglossia ?
1398 getPolyglossiaBegin(lang_begin_command, mainlang,
1399 bparams.language->polyglossiaOpts())
1400 : subst(lang_begin_command, "$$lang", mainlang);
1403 if (using_begin_end)
1404 pushLanguageName(mainlang);
1407 ParagraphList const & paragraphs = text.paragraphs();
1409 if (runparams.par_begin == runparams.par_end) {
1410 // The full doc will be exported but it is easier to just rely on
1411 // runparams range parameters that will be passed TeXEnvironment.
1412 runparams.par_begin = 0;
1413 runparams.par_end = paragraphs.size();
1416 pit_type pit = runparams.par_begin;
1417 // lastpit is for the language check after the loop.
1418 pit_type lastpit = pit;
1419 // variables used in the loop:
1420 bool was_title = false;
1421 bool already_title = false;
1422 DocumentClass const & tclass = bparams.documentClass();
1424 // Did we already warn about inTitle layout mixing? (we only warn once)
1425 bool gave_layout_warning = false;
1426 for (; pit < runparams.par_end; ++pit) {
1428 ParagraphList::const_iterator par = paragraphs.constIterator(pit);
1430 // FIXME This check should not be needed. We should
1431 // perhaps issue an error if it is.
1432 Layout const & layout = text.inset().forcePlainLayout() ?
1433 tclass.plainLayout() : par->layout();
1435 if (layout.intitle) {
1436 if (already_title) {
1437 if (!gave_layout_warning && !runparams.dryrun) {
1438 gave_layout_warning = true;
1439 frontend::Alert::warning(_("Error in latexParagraphs"),
1440 bformat(_("You are using at least one "
1441 "layout (%1$s) intended for the title, "
1442 "after using non-title layouts. This "
1443 "could lead to missing or incorrect output."
1446 } else if (!was_title) {
1448 if (tclass.titletype() == TITLE_ENVIRONMENT) {
1450 << from_ascii(tclass.titlename())
1454 } else if (was_title && !already_title && !layout.inpreamble) {
1455 if (tclass.titletype() == TITLE_ENVIRONMENT) {
1456 os << "\\end{" << from_ascii(tclass.titlename())
1460 os << "\\" << from_ascii(tclass.titlename())
1463 already_title = true;
1467 if (layout.isCommand() && !layout.latexname().empty()
1468 && layout.latexname() == bparams.multibib) {
1469 if (runparams.openbtUnit)
1470 os << "\\end{btUnit}\n";
1471 if (!bparams.useBiblatex()) {
1472 os << '\n' << "\\begin{btUnit}\n";
1473 runparams.openbtUnit = true;
1477 if (!layout.isEnvironment() && par->params().leftIndent().zero()) {
1478 // This is a standard top level paragraph, TeX it and continue.
1479 TeXOnePar(buf, text, pit, os, runparams, everypar);
1483 TeXEnvironmentData const data =
1484 prepareEnvironment(buf, text, par, os, runparams);
1485 // pit can be changed in TeXEnvironment.
1486 TeXEnvironment(buf, text, runparams, pit, os);
1487 finishEnvironment(os, runparams, data);
1490 if (pit == runparams.par_end) {
1491 // Make sure that the last paragraph is
1492 // correctly terminated (because TeXOnePar does
1493 // not add a \n in this case)
1497 // It might be that we only have a title in this document
1498 if (was_title && !already_title) {
1499 if (tclass.titletype() == TITLE_ENVIRONMENT) {
1500 os << "\\end{" << from_ascii(tclass.titlename())
1503 os << "\\" << from_ascii(tclass.titlename())
1508 if (maintext && !is_child && runparams.openbtUnit)
1509 os << "\\end{btUnit}\n";
1511 // if "auto end" is switched off, explicitly close the language at the end
1512 // but only if the last par is in a babel or polyglossia language
1513 if (maintext && !lyxrc.language_auto_end && !mainlang.empty() &&
1514 paragraphs.at(lastpit).getParLanguage(bparams)->encoding()->package() != Encoding::CJK) {
1515 os << from_utf8(subst(lang_end_command,
1519 if (using_begin_end)
1523 // If the last paragraph is an environment, we'll have to close
1524 // CJK at the very end to do proper nesting.
1525 if (maintext && !is_child && state->open_encoding_ == CJK) {
1526 os << "\\end{CJK}\n";
1527 state->open_encoding_ = none;
1529 // Likewise for polyglossia or when using begin/end commands
1530 string const & cur_lang = openLanguageName(state);
1531 if (maintext && !is_child && !cur_lang.empty()) {
1532 os << from_utf8(subst(lang_end_command,
1536 if (using_begin_end)
1540 // reset inherited encoding
1541 if (state->cjk_inherited_ > 0) {
1542 state->cjk_inherited_ -= 1;
1543 if (state->cjk_inherited_ == 0)
1544 state->open_encoding_ = CJK;
1547 if (multibib_child && mparams.useBibtopic()) {
1548 os << "\\end{btUnit}\n";
1549 runparams.openbtUnit = false;
1554 pair<bool, int> switchEncoding(odocstream & os, BufferParams const & bparams,
1555 OutputParams const & runparams, Encoding const & newEnc,
1558 // XeTeX/LuaTeX use only one encoding per document:
1559 // * with useNonTeXFonts: "utf8plain",
1560 // * with XeTeX and TeX fonts: "ascii" (inputenc fails),
1561 // * with LuaTeX and TeX fonts: only one encoding accepted by luainputenc.
1562 if (runparams.isFullUnicode() || newEnc.name() == "inherit")
1563 return make_pair(false, 0);
1565 Encoding const & oldEnc = *runparams.encoding;
1566 bool moving_arg = runparams.moving_arg;
1567 // If we switch from/to CJK, we need to switch anyway, despite custom inputenc
1568 bool const from_to_cjk =
1569 (oldEnc.package() == Encoding::CJK && newEnc.package() != Encoding::CJK)
1570 || (oldEnc.package() != Encoding::CJK && newEnc.package() == Encoding::CJK);
1571 if (!force && !from_to_cjk
1572 && ((bparams.inputenc != "auto" && bparams.inputenc != "default") || moving_arg))
1573 return make_pair(false, 0);
1575 // Do nothing if the encoding is unchanged.
1576 if (oldEnc.name() == newEnc.name())
1577 return make_pair(false, 0);
1579 // FIXME We ignore encoding switches from/to encodings that do
1580 // neither support the inputenc package nor the CJK package here.
1581 // This does of course only work in special cases (e.g. switch from
1582 // tis620-0 to latin1, but the text in latin1 contains ASCII only),
1583 // but it is the best we can do
1584 if (oldEnc.package() == Encoding::none
1585 || newEnc.package() == Encoding::none)
1586 return make_pair(false, 0);
1588 LYXERR(Debug::LATEX, "Changing LaTeX encoding from "
1589 << oldEnc.name() << " to " << newEnc.name());
1590 os << setEncoding(newEnc.iconvName());
1591 if (bparams.inputenc == "default")
1592 return make_pair(true, 0);
1594 docstring const inputenc_arg(from_ascii(newEnc.latexName()));
1595 OutputState * state = getOutputState();
1596 switch (newEnc.package()) {
1597 case Encoding::none:
1598 case Encoding::japanese:
1599 // shouldn't ever reach here, see above
1600 return make_pair(true, 0);
1601 case Encoding::inputenc: {
1602 int count = inputenc_arg.length();
1603 if (oldEnc.package() == Encoding::CJK &&
1604 state->open_encoding_ == CJK) {
1606 state->open_encoding_ = none;
1609 else if (oldEnc.package() == Encoding::inputenc &&
1610 state->open_encoding_ == inputenc) {
1612 state->open_encoding_ = none;
1615 if (runparams.local_font != 0
1616 && oldEnc.package() == Encoding::CJK) {
1617 // within insets, \inputenc switches need
1618 // to be embraced within \bgroup...\egroup;
1622 state->open_encoding_ = inputenc;
1624 // with the japanese option, inputenc is omitted.
1625 if (runparams.use_japanese)
1626 return make_pair(true, count);
1627 os << "\\inputencoding{" << inputenc_arg << '}';
1628 return make_pair(true, count + 16);
1630 case Encoding::CJK: {
1631 int count = inputenc_arg.length();
1632 if (oldEnc.package() == Encoding::CJK &&
1633 state->open_encoding_ == CJK) {
1637 if (oldEnc.package() == Encoding::inputenc &&
1638 state->open_encoding_ == inputenc) {
1642 os << "\\begin{CJK}{" << inputenc_arg << "}{"
1643 << from_ascii(bparams.fonts_cjk) << "}";
1644 state->open_encoding_ = CJK;
1645 return make_pair(true, count + 15);
1648 // Dead code to avoid a warning:
1649 return make_pair(true, 0);