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 os << '\\' << from_ascii(style.latexname());
660 if (!style.latexargs().empty())
661 latexArgInsets(par, os, runparams, style.latexargs());
662 os << from_ascii(style.latexparam());
664 case LATEX_ITEM_ENVIRONMENT:
665 case LATEX_LIST_ENVIRONMENT:
666 os << "\\" + style.itemcommand();
668 if (!style.itemargs().empty())
669 latexArgInsets(par, os, runparams, style.itemargs(), "item:");
672 case LATEX_BIB_ENVIRONMENT:
673 // ignore this, the inset will write itself
682 // FIXME: this should be anonymous
683 void TeXOnePar(Buffer const & buf,
687 OutputParams const & runparams_in,
688 string const & everypar,
689 int start_pos, int end_pos,
692 BufferParams const & bparams = runparams_in.is_child
693 ? buf.masterParams() : buf.params();
694 ParagraphList const & paragraphs = text.paragraphs();
695 Paragraph const & par = paragraphs.at(pit);
696 // FIXME This check should not really be needed.
697 // Perhaps we should issue an error if it is.
698 Layout const & style = text.inset().forcePlainLayout() ?
699 bparams.documentClass().plainLayout() : par.layout();
701 if (style.inpreamble && !force)
704 LYXERR(Debug::LATEX, "TeXOnePar for paragraph " << pit << " ptr " << &par << " '"
707 OutputParams runparams = runparams_in;
708 runparams.isLastPar = (pit == pit_type(paragraphs.size() - 1));
709 // We reinitialze par begin and end to be on the safe side
710 // with embedded inset as we don't know if they set those
712 runparams.par_begin = 0;
713 runparams.par_end = 0;
715 bool const maintext = text.isMainText();
716 // we are at the beginning of an inset and CJK is already open;
717 // we count inheritation levels to get the inset nesting right.
718 OutputState * state = getOutputState();
719 if (pit == 0 && !maintext
720 && (state->cjk_inherited_ > 0 || state->open_encoding_ == CJK)) {
721 state->cjk_inherited_ += 1;
722 state->open_encoding_ = none;
725 if (text.inset().isPassThru()) {
726 Font const outerfont = text.outerFont(pit);
728 // No newline before first paragraph in this lyxtext
731 if (!text.inset().getLayout().parbreakIsNewline())
735 par.latex(bparams, outerfont, os, runparams, start_pos, end_pos, force);
739 Paragraph const * nextpar = runparams.isLastPar
740 ? 0 : ¶graphs.at(pit + 1);
742 bool const intitle_command = style.intitle && style.latextype == LATEX_COMMAND;
744 if (style.pass_thru) {
745 Font const outerfont = text.outerFont(pit);
746 parStartCommand(par, os, runparams, style);
750 par.latex(bparams, outerfont, os, runparams, start_pos, end_pos, force);
752 // I did not create a parEndCommand for this minuscule
753 // task because in the other user of parStartCommand
754 // the code is different (JMarc)
755 if (style.isCommand())
759 if (!style.parbreak_is_newline) {
761 } else if (nextpar && !style.isEnvironment()) {
762 Layout const nextstyle = text.inset().forcePlainLayout()
763 ? bparams.documentClass().plainLayout()
765 if (nextstyle.name() != style.name())
772 // This paragraph's language
773 Language const * const par_language = par.getParLanguage(bparams);
774 Language const * const nextpar_language = nextpar ?
775 nextpar->getParLanguage(bparams) : 0;
776 // The document's language
777 Language const * const doc_language = bparams.language;
778 // The language that was in effect when the environment this paragraph is
779 // inside of was opened
780 Language const * const outer_language =
781 (runparams.local_font != 0) ?
782 runparams.local_font->language() : doc_language;
784 Paragraph const * priorpar = (pit == 0) ? 0 : ¶graphs.at(pit - 1);
786 // The previous language that was in effect is the language of the
787 // previous paragraph, unless the previous paragraph is inside an
788 // environment with nesting depth greater than (or equal to, but with
789 // a different layout) the current one. If there is no previous
790 // paragraph, the previous language is the outer language.
791 bool const use_prev_env_language = state->prev_env_language_ != 0
793 && priorpar->layout().isEnvironment()
794 && (priorpar->getDepth() > par.getDepth()
795 || (priorpar->getDepth() == par.getDepth()
796 && priorpar->layout() != par.layout()));
797 Language const * const prev_language =
799 ? (use_prev_env_language ? state->prev_env_language_
800 : priorpar->getParLanguage(bparams))
804 bool const use_polyglossia = runparams.use_polyglossia;
805 string const par_lang = use_polyglossia ?
806 getPolyglossiaEnvName(par_language): par_language->babel();
807 string const prev_lang = use_polyglossia ?
808 getPolyglossiaEnvName(prev_language) : prev_language->babel();
809 string const outer_lang = use_polyglossia ?
810 getPolyglossiaEnvName(outer_language) : outer_language->babel();
811 string const nextpar_lang = nextpar_language ? (use_polyglossia ?
812 getPolyglossiaEnvName(nextpar_language) :
813 nextpar_language->babel()) : string();
814 string lang_begin_command = use_polyglossia ?
815 "\\begin{$$lang}$$opts" : lyxrc.language_command_begin;
816 string lang_end_command = use_polyglossia ?
817 "\\end{$$lang}" : lyxrc.language_command_end;
818 // the '%' is necessary to prevent unwanted whitespace
819 string lang_command_termination = "%\n";
820 bool const using_begin_end = use_polyglossia ||
821 !lang_end_command.empty();
823 // For InTitle commands, we need to switch the language inside the command
824 // (see #10849); thus open the command here.
825 if (intitle_command) {
826 parStartCommand(par, os, runparams, style);
830 // In some insets (such as Arguments), we cannot use \selectlanguage
831 bool const localswitch = text.inset().forceLocalFontSwitch()
832 || (using_begin_end && text.inset().forcePlainLayout());
834 lang_begin_command = use_polyglossia ?
835 "\\text$$lang$$opts{" : lyxrc.language_command_local;
836 lang_end_command = "}";
837 lang_command_termination.clear();
840 if (par_lang != prev_lang
841 // check if we already put language command in TeXEnvironment()
842 && !(style.isEnvironment()
843 && (pit == 0 || (priorpar->layout() != par.layout()
844 && priorpar->getDepth() <= par.getDepth())
845 || priorpar->getDepth() < par.getDepth())))
847 if ((!using_begin_end || langOpenedAtThisLevel(state)) &&
848 !lang_end_command.empty() &&
849 prev_lang != outer_lang &&
850 !prev_lang.empty() &&
851 (!using_begin_end || !style.isEnvironment()))
853 os << from_ascii(subst(lang_end_command,
856 << lang_command_termination;
861 // We need to open a new language if we couldn't close the previous
862 // one (because there's no language_command_end); and even if we closed
863 // the previous one, if the current language is different than the
864 // outer_language (which is currently in effect once the previous one
866 if ((lang_end_command.empty() || par_lang != outer_lang
868 || (style.isEnvironment() && par_lang != prev_lang)))
869 && !par_lang.empty()) {
870 // If we're inside an inset, and that inset is within an \L or \R
871 // (or equivalents), then within the inset, too, any opposite
872 // language paragraph should appear within an \L or \R (in addition
873 // to, outside of, the normal language switch commands).
874 // This behavior is not correct for ArabTeX, though.
877 && par_language->lang() != "arabic_arabtex"
878 && outer_language->lang() != "arabic_arabtex"
879 // are we in an inset?
880 && runparams.local_font != 0
881 // is the inset within an \L or \R?
883 // FIXME: currently, we don't check this; this means that
884 // we'll have unnnecessary \L and \R commands, but that
885 // doesn't seem to hurt (though latex will complain)
887 // is this paragraph in the opposite direction?
888 && runparams.local_font->isRightToLeft() != par_language->rightToLeft()) {
889 // FIXME: I don't have a working copy of the Arabi package, so
890 // I'm not sure if the farsi and arabic_arabi stuff is correct
892 if (par_language->lang() == "farsi")
894 else if (outer_language->lang() == "farsi")
896 else if (par_language->lang() == "arabic_arabi")
898 else if (outer_language->lang() == "arabic_arabi")
900 // remaining RTL languages currently is hebrew
901 else if (par_language->rightToLeft())
906 // With CJK, the CJK tag has to be closed first (see below)
907 if (runparams.encoding->package() != Encoding::CJK
908 && (par_lang != openLanguageName(state) || localswitch)
909 && !par_lang.empty()) {
910 string bc = use_polyglossia ?
911 getPolyglossiaBegin(lang_begin_command, par_lang,
912 par_language->polyglossiaOpts(),
914 : subst(lang_begin_command, "$$lang", par_lang);
916 os << lang_command_termination;
918 pushLanguageName(par_lang, localswitch);
923 // Switch file encoding if necessary; no need to do this for "default"
924 // encoding, since this only affects the position of the outputted
925 // \inputencoding command; the encoding switch will occur when necessary
926 if (bparams.inputenc == "auto"
927 && !runparams.isFullUnicode() // Xe/LuaTeX use one document-wide encoding (see also switchEncoding())
928 && runparams.encoding->package() != Encoding::none) {
929 // Look ahead for future encoding changes.
930 // We try to output them at the beginning of the paragraph,
931 // since the \inputencoding command is not allowed e.g. in
932 // sections. For this reason we only set runparams.moving_arg
933 // after checking for the encoding change, otherwise the
934 // change would be always avoided by switchEncoding().
935 for (pos_type i = 0; i < par.size(); ++i) {
936 char_type const c = par.getChar(i);
937 Encoding const * const encoding =
938 par.getFontSettings(bparams, i).language()->encoding();
939 if (encoding->package() != Encoding::CJK
940 && runparams.encoding->package() == Encoding::inputenc
945 // All characters before c are in the ASCII range, and
946 // c is non-ASCII (but no inset), so change the
947 // encoding to that required by the language of c.
948 // With CJK, only add switch if we have CJK content at the beginning
950 if (i != 0 && encoding->package() == Encoding::CJK)
953 pair<bool, int> enc_switch = switchEncoding(os.os(),
954 bparams, runparams, *encoding);
955 // the following is necessary after a CJK environment in a multilingual
956 // context (nesting issue).
957 if (par_language->encoding()->package() == Encoding::CJK
958 && state->open_encoding_ != CJK && state->cjk_inherited_ == 0) {
959 os << "\\begin{CJK}{" << from_ascii(par_language->encoding()->latexName())
960 << "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
961 state->open_encoding_ = CJK;
963 if (encoding->package() != Encoding::none && enc_switch.first) {
964 if (enc_switch.second > 0) {
965 // the '%' is necessary to prevent unwanted whitespace
968 // With CJK, the CJK tag had to be closed first (see above)
969 if (runparams.encoding->package() == Encoding::CJK
970 && par_lang != openLanguageName(state)
971 && !par_lang.empty()) {
972 string bc = use_polyglossia ?
973 getPolyglossiaBegin(lang_begin_command, par_lang,
974 par_language->polyglossiaOpts(),
976 : subst(lang_begin_command, "$$lang", par_lang);
978 << lang_command_termination;
980 pushLanguageName(par_lang, localswitch);
982 runparams.encoding = encoding;
988 runparams.moving_arg |= style.needprotect;
989 Encoding const * const prev_encoding = runparams.encoding;
991 bool const useSetSpace = bparams.documentClass().provides("SetSpace");
992 if (par.allowParagraphCustomization()) {
993 if (par.params().startOfAppendix()) {
994 os << "\n\\appendix\n";
997 // InTitle commands must use switches (not environments)
998 // inside the commands (see #9332)
1000 if (!par.params().spacing().isDefault())
1002 if (runparams.moving_arg)
1004 os << from_ascii(par.params().spacing().writeCmd(useSetSpace));
1007 if (!par.params().spacing().isDefault()
1008 && (pit == 0 || !priorpar->hasSameLayout(par)))
1010 os << from_ascii(par.params().spacing().writeEnvirBegin(useSetSpace))
1014 if (style.isCommand()) {
1020 // For InTitle commands, we already started the command before
1021 // the language switch
1022 if (!intitle_command)
1023 parStartCommand(par, os, runparams, style);
1025 Font const outerfont = text.outerFont(pit);
1028 os << from_utf8(everypar);
1029 par.latex(bparams, outerfont, os, runparams, start_pos, end_pos, force);
1031 Font const font = par.empty()
1032 ? par.getLayoutFont(bparams, outerfont)
1033 : par.getFont(bparams, par.size() - 1, outerfont);
1035 bool const is_command = style.isCommand();
1037 // InTitle commands need to be closed after the language has been closed.
1038 if (!intitle_command) {
1041 if (!style.postcommandargs().empty())
1042 latexArgInsets(par, os, runparams, style.postcommandargs(), "post:");
1043 if (runparams.encoding != prev_encoding) {
1044 runparams.encoding = prev_encoding;
1045 os << setEncoding(prev_encoding->iconvName());
1050 bool pending_newline = false;
1051 bool unskip_newline = false;
1052 bool close_lang_switch = false;
1053 switch (style.latextype) {
1054 case LATEX_ITEM_ENVIRONMENT:
1055 case LATEX_LIST_ENVIRONMENT:
1056 if ((nextpar && par_lang != nextpar_lang
1057 && nextpar->getDepth() == par.getDepth())
1058 || (atSameLastLangSwitchDepth(state) && nextpar
1059 && nextpar->getDepth() < par.getDepth()))
1060 close_lang_switch = using_begin_end;
1061 if (nextpar && par.params().depth() < nextpar->params().depth())
1062 pending_newline = true;
1064 case LATEX_ENVIRONMENT: {
1065 // if its the last paragraph of the current environment
1066 // skip it otherwise fall through
1068 && ((nextpar->layout() != par.layout()
1069 || nextpar->params().depth() != par.params().depth())
1070 || (!using_begin_end || par_lang != nextpar_lang)))
1072 close_lang_switch = using_begin_end;
1079 // we don't need it for the last paragraph and in InTitle commands!!!
1080 if (nextpar && !intitle_command)
1081 pending_newline = true;
1084 // InTitle commands use switches (not environments) for space settings
1085 if (par.allowParagraphCustomization() && !style.intitle) {
1086 if (!par.params().spacing().isDefault()
1087 && (runparams.isLastPar || !nextpar->hasSameLayout(par))) {
1088 if (pending_newline)
1091 string const endtag =
1092 par.params().spacing().writeEnvirEnd(useSetSpace);
1093 if (prefixIs(endtag, "\\end{"))
1096 os << from_ascii(endtag);
1097 pending_newline = true;
1101 // Closing the language is needed for the last paragraph in a given language
1102 // as well as for any InTitleCommand (since these set the language locally);
1103 // it is also needed if we're within an \L or \R that we may have opened above
1104 // (not necessarily in this paragraph) and are about to close.
1105 bool closing_rtl_ltr_environment = !using_begin_end
1107 && (par_language->lang() != "arabic_arabtex"
1108 && outer_language->lang() != "arabic_arabtex")
1109 // have we opened an \L or \R environment?
1110 && runparams.local_font != 0
1111 && runparams.local_font->isRightToLeft() != par_language->rightToLeft()
1112 // are we about to close the language?
1113 &&((nextpar && par_lang != nextpar_lang)
1114 || (runparams.isLastPar && par_lang != outer_lang));
1116 if ((intitle_command && using_begin_end)
1117 || closing_rtl_ltr_environment
1118 || ((runparams.isLastPar || close_lang_switch)
1119 && (par_lang != outer_lang || (using_begin_end
1120 && style.isEnvironment()
1121 && par_lang != nextpar_lang)))) {
1122 // Since \selectlanguage write the language to the aux file,
1123 // we need to reset the language at the end of footnote or
1126 if (pending_newline || close_lang_switch)
1129 // when the paragraph uses CJK, the language has to be closed earlier
1130 if (font.language()->encoding()->package() != Encoding::CJK) {
1131 if (lang_end_command.empty()) {
1132 // If this is a child, we should restore the
1133 // master language after the last paragraph.
1134 Language const * const current_language =
1135 (runparams.isLastPar && runparams.master_language)
1136 ? runparams.master_language
1138 string const current_lang = use_polyglossia
1139 ? getPolyglossiaEnvName(current_language)
1140 : current_language->babel();
1141 if (!current_lang.empty()
1142 && current_lang != openLanguageName(state)) {
1143 string bc = use_polyglossia ?
1144 getPolyglossiaBegin(lang_begin_command, current_lang,
1145 current_language->polyglossiaOpts(),
1147 : subst(lang_begin_command, "$$lang", current_lang);
1149 pending_newline = !localswitch;
1150 unskip_newline = !localswitch;
1151 if (using_begin_end)
1152 pushLanguageName(current_lang, localswitch);
1154 } else if ((!using_begin_end ||
1155 langOpenedAtThisLevel(state)) &&
1156 !par_lang.empty()) {
1157 // If we are in an environment, we have to
1158 // close the "outer" language afterwards
1159 string const & cur_lang = openLanguageName(state);
1160 if (!style.isEnvironment()
1161 || (close_lang_switch
1162 && atSameLastLangSwitchDepth(state)
1163 && par_lang != outer_lang
1164 && (par_lang != cur_lang
1165 || (cur_lang != outer_lang
1167 && style != nextpar->layout())))
1168 || (atSameLastLangSwitchDepth(state)
1169 && state->lang_switch_depth_.size()
1170 && cur_lang != par_lang))
1172 if (using_begin_end && !localswitch)
1174 os << from_ascii(subst(
1178 pending_newline = !localswitch;
1179 unskip_newline = !localswitch;
1180 if (using_begin_end)
1186 if (closing_rtl_ltr_environment)
1189 // InTitle commands need to be closed after the language has been closed.
1190 if (intitle_command) {
1193 if (!style.postcommandargs().empty())
1194 latexArgInsets(par, os, runparams, style.postcommandargs(), "post:");
1195 if (runparams.encoding != prev_encoding) {
1196 runparams.encoding = prev_encoding;
1197 os << setEncoding(prev_encoding->iconvName());
1202 bool const last_was_separator =
1203 par.size() > 0 && par.isEnvSeparator(par.size() - 1);
1205 if (pending_newline) {
1207 // prevent unwanted whitespace
1209 if (!os.afterParbreak() && !last_was_separator)
1213 // if this is a CJK-paragraph and the next isn't, close CJK
1214 // also if the next paragraph is a multilingual environment (because of nesting)
1216 && state->open_encoding_ == CJK
1217 && (nextpar_language->encoding()->package() != Encoding::CJK
1218 || (nextpar->layout().isEnvironment() && nextpar->isMultiLingual(bparams)))
1219 // inbetween environments, CJK has to be closed later (nesting!)
1220 && (!style.isEnvironment() || !nextpar->layout().isEnvironment())) {
1221 os << "\\end{CJK}\n";
1222 state->open_encoding_ = none;
1225 // If this is the last paragraph, close the CJK environment
1226 // if necessary. If it's an environment, we'll have to \end that first.
1227 if (runparams.isLastPar && !style.isEnvironment()) {
1228 switch (state->open_encoding_) {
1230 // do nothing at the end of child documents
1231 if (maintext && buf.masterBuffer() != &buf)
1235 os << "\n\\end{CJK}\n";
1239 state->open_encoding_ = none;
1244 state->open_encoding_ = none;
1254 // If this is the last paragraph, and a local_font was set upon entering
1255 // the inset, and we're using "auto" or "default" encoding, and not
1256 // compiling with XeTeX or LuaTeX, the encoding
1257 // should be set back to that local_font's encoding.
1258 if (runparams.isLastPar && runparams_in.local_font != 0
1259 && runparams_in.encoding != runparams_in.local_font->language()->encoding()
1260 && (bparams.inputenc == "auto" || bparams.inputenc == "default")
1261 && !runparams.isFullUnicode()
1263 runparams_in.encoding = runparams_in.local_font->language()->encoding();
1264 os << setEncoding(runparams_in.encoding->iconvName());
1266 // Otherwise, the current encoding should be set for the next paragraph.
1268 runparams_in.encoding = runparams.encoding;
1271 // we don't need a newline for the last paragraph!!!
1272 // Note from JMarc: we will re-add a \n explicitly in
1273 // TeXEnvironment, because it is needed in this case
1274 if (nextpar && !os.afterParbreak() && !last_was_separator) {
1275 // Make sure to start a new line
1277 Layout const & next_layout = nextpar->layout();
1278 // A newline '\n' is always output before a command,
1279 // so avoid doubling it.
1280 if (!next_layout.isCommand()) {
1281 // Here we now try to avoid spurious empty lines by
1282 // outputting a paragraph break only if: (case 1) the
1283 // paragraph style allows parbreaks and no \begin, \end
1284 // or \item tags are going to follow (i.e., if the next
1285 // isn't the first or the current isn't the last
1286 // paragraph of an environment or itemize) and the
1287 // depth and alignment of the following paragraph is
1288 // unchanged, or (case 2) the following is a
1289 // non-environment paragraph whose depth is increased
1290 // but whose alignment is unchanged, or (case 3) the
1291 // paragraph is not an environment and the next one is a
1292 // non-itemize-like env at lower depth, or (case 4) the
1293 // paragraph is a command not followed by an environment
1294 // and the alignment of the current and next paragraph
1295 // is unchanged, or (case 5) the current alignment is
1296 // changed and a standard paragraph follows.
1297 DocumentClass const & tclass = bparams.documentClass();
1298 if ((style == next_layout
1299 && !style.parbreak_is_newline
1300 && !text.inset().getLayout().parbreakIsNewline()
1301 && style.latextype != LATEX_ITEM_ENVIRONMENT
1302 && style.latextype != LATEX_LIST_ENVIRONMENT
1303 && style.align == par.getAlign()
1304 && nextpar->getDepth() == par.getDepth()
1305 && nextpar->getAlign() == par.getAlign())
1306 || (!next_layout.isEnvironment()
1307 && nextpar->getDepth() > par.getDepth()
1308 && nextpar->getAlign() == par.getAlign())
1309 || (!style.isEnvironment()
1310 && next_layout.latextype == LATEX_ENVIRONMENT
1311 && nextpar->getDepth() < par.getDepth())
1312 || (style.isCommand()
1313 && !next_layout.isEnvironment()
1314 && style.align == par.getAlign()
1315 && next_layout.align == nextpar->getAlign())
1316 || (style.align != par.getAlign()
1317 && tclass.isDefaultLayout(next_layout))) {
1323 LYXERR(Debug::LATEX, "TeXOnePar for paragraph " << pit << " done; ptr "
1324 << &par << " next " << nextpar);
1330 // LaTeX all paragraphs
1331 void latexParagraphs(Buffer const & buf,
1334 OutputParams const & runparams,
1335 string const & everypar)
1337 LASSERT(runparams.par_begin <= runparams.par_end,
1338 { os << "% LaTeX Output Error\n"; return; } );
1340 BufferParams const & bparams = buf.params();
1341 BufferParams const & mparams = buf.masterParams();
1343 bool const maintext = text.isMainText();
1344 bool const is_child = buf.masterBuffer() != &buf;
1345 bool const multibib_child = maintext && is_child
1346 && mparams.multibib == "child";
1348 if (multibib_child && mparams.useBiblatex())
1349 os << "\\newrefsection";
1350 else if (multibib_child && mparams.useBibtopic()) {
1351 os << "\\begin{btUnit}\n";
1352 runparams.openbtUnit = true;
1355 // Open a CJK environment at the beginning of the main buffer
1356 // if the document's language is a CJK language
1357 // (but not in child documents)
1358 OutputState * state = getOutputState();
1359 if (maintext && !is_child
1360 && bparams.encoding().package() == Encoding::CJK) {
1361 os << "\\begin{CJK}{" << from_ascii(bparams.encoding().latexName())
1362 << "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
1363 state->open_encoding_ = CJK;
1365 // if "auto begin" is switched off, explicitly switch the
1366 // language on at start
1367 string const mainlang = runparams.use_polyglossia
1368 ? getPolyglossiaEnvName(bparams.language)
1369 : bparams.language->babel();
1370 string const lang_begin_command = runparams.use_polyglossia ?
1371 "\\begin{$$lang}$$opts" : lyxrc.language_command_begin;
1372 string const lang_end_command = runparams.use_polyglossia ?
1373 "\\end{$$lang}" : lyxrc.language_command_end;
1374 bool const using_begin_end = runparams.use_polyglossia ||
1375 !lang_end_command.empty();
1377 if (maintext && !lyxrc.language_auto_begin &&
1378 !mainlang.empty()) {
1380 string bc = runparams.use_polyglossia ?
1381 getPolyglossiaBegin(lang_begin_command, mainlang,
1382 bparams.language->polyglossiaOpts())
1383 : subst(lang_begin_command, "$$lang", mainlang);
1386 if (using_begin_end)
1387 pushLanguageName(mainlang);
1390 ParagraphList const & paragraphs = text.paragraphs();
1392 if (runparams.par_begin == runparams.par_end) {
1393 // The full doc will be exported but it is easier to just rely on
1394 // runparams range parameters that will be passed TeXEnvironment.
1395 runparams.par_begin = 0;
1396 runparams.par_end = paragraphs.size();
1399 pit_type pit = runparams.par_begin;
1400 // lastpit is for the language check after the loop.
1401 pit_type lastpit = pit;
1402 // variables used in the loop:
1403 bool was_title = false;
1404 bool already_title = false;
1405 DocumentClass const & tclass = bparams.documentClass();
1407 // Did we already warn about inTitle layout mixing? (we only warn once)
1408 bool gave_layout_warning = false;
1409 for (; pit < runparams.par_end; ++pit) {
1411 ParagraphList::const_iterator par = paragraphs.constIterator(pit);
1413 // FIXME This check should not be needed. We should
1414 // perhaps issue an error if it is.
1415 Layout const & layout = text.inset().forcePlainLayout() ?
1416 tclass.plainLayout() : par->layout();
1418 if (layout.intitle) {
1419 if (already_title) {
1420 if (!gave_layout_warning && !runparams.dryrun) {
1421 gave_layout_warning = true;
1422 frontend::Alert::warning(_("Error in latexParagraphs"),
1423 bformat(_("You are using at least one "
1424 "layout (%1$s) intended for the title, "
1425 "after using non-title layouts. This "
1426 "could lead to missing or incorrect output."
1429 } else if (!was_title) {
1431 if (tclass.titletype() == TITLE_ENVIRONMENT) {
1433 << from_ascii(tclass.titlename())
1437 } else if (was_title && !already_title && !layout.inpreamble) {
1438 if (tclass.titletype() == TITLE_ENVIRONMENT) {
1439 os << "\\end{" << from_ascii(tclass.titlename())
1443 os << "\\" << from_ascii(tclass.titlename())
1446 already_title = true;
1450 if (layout.isCommand() && !layout.latexname().empty()
1451 && layout.latexname() == bparams.multibib) {
1452 if (runparams.openbtUnit)
1453 os << "\\end{btUnit}\n";
1454 if (!bparams.useBiblatex()) {
1455 os << '\n' << "\\begin{btUnit}\n";
1456 runparams.openbtUnit = true;
1460 if (!layout.isEnvironment() && par->params().leftIndent().zero()) {
1461 // This is a standard top level paragraph, TeX it and continue.
1462 TeXOnePar(buf, text, pit, os, runparams, everypar);
1466 TeXEnvironmentData const data =
1467 prepareEnvironment(buf, text, par, os, runparams);
1468 // pit can be changed in TeXEnvironment.
1469 TeXEnvironment(buf, text, runparams, pit, os);
1470 finishEnvironment(os, runparams, data);
1473 if (pit == runparams.par_end) {
1474 // Make sure that the last paragraph is
1475 // correctly terminated (because TeXOnePar does
1476 // not add a \n in this case)
1480 // It might be that we only have a title in this document
1481 if (was_title && !already_title) {
1482 if (tclass.titletype() == TITLE_ENVIRONMENT) {
1483 os << "\\end{" << from_ascii(tclass.titlename())
1486 os << "\\" << from_ascii(tclass.titlename())
1491 if (maintext && !is_child && runparams.openbtUnit)
1492 os << "\\end{btUnit}\n";
1494 // if "auto end" is switched off, explicitly close the language at the end
1495 // but only if the last par is in a babel or polyglossia language
1496 if (maintext && !lyxrc.language_auto_end && !mainlang.empty() &&
1497 paragraphs.at(lastpit).getParLanguage(bparams)->encoding()->package() != Encoding::CJK) {
1498 os << from_utf8(subst(lang_end_command,
1502 if (using_begin_end)
1506 // If the last paragraph is an environment, we'll have to close
1507 // CJK at the very end to do proper nesting.
1508 if (maintext && !is_child && state->open_encoding_ == CJK) {
1509 os << "\\end{CJK}\n";
1510 state->open_encoding_ = none;
1512 // Likewise for polyglossia or when using begin/end commands
1513 string const & cur_lang = openLanguageName(state);
1514 if (maintext && !is_child && !cur_lang.empty()) {
1515 os << from_utf8(subst(lang_end_command,
1519 if (using_begin_end)
1523 // reset inherited encoding
1524 if (state->cjk_inherited_ > 0) {
1525 state->cjk_inherited_ -= 1;
1526 if (state->cjk_inherited_ == 0)
1527 state->open_encoding_ = CJK;
1530 if (multibib_child && mparams.useBibtopic()) {
1531 os << "\\end{btUnit}\n";
1532 runparams.openbtUnit = false;
1537 pair<bool, int> switchEncoding(odocstream & os, BufferParams const & bparams,
1538 OutputParams const & runparams, Encoding const & newEnc,
1541 // XeTeX/LuaTeX use only one encoding per document:
1542 // * with useNonTeXFonts: "utf8plain",
1543 // * with XeTeX and TeX fonts: "ascii" (inputenc fails),
1544 // * with LuaTeX and TeX fonts: only one encoding accepted by luainputenc.
1545 if (runparams.isFullUnicode() || newEnc.name() == "inherit")
1546 return make_pair(false, 0);
1548 Encoding const & oldEnc = *runparams.encoding;
1549 bool moving_arg = runparams.moving_arg;
1550 // If we switch from/to CJK, we need to switch anyway, despite custom inputenc
1551 bool const from_to_cjk =
1552 (oldEnc.package() == Encoding::CJK && newEnc.package() != Encoding::CJK)
1553 || (oldEnc.package() != Encoding::CJK && newEnc.package() == Encoding::CJK);
1554 if (!force && !from_to_cjk
1555 && ((bparams.inputenc != "auto" && bparams.inputenc != "default") || moving_arg))
1556 return make_pair(false, 0);
1558 // Do nothing if the encoding is unchanged.
1559 if (oldEnc.name() == newEnc.name())
1560 return make_pair(false, 0);
1562 // FIXME We ignore encoding switches from/to encodings that do
1563 // neither support the inputenc package nor the CJK package here.
1564 // This does of course only work in special cases (e.g. switch from
1565 // tis620-0 to latin1, but the text in latin1 contains ASCII only),
1566 // but it is the best we can do
1567 if (oldEnc.package() == Encoding::none
1568 || newEnc.package() == Encoding::none)
1569 return make_pair(false, 0);
1571 LYXERR(Debug::LATEX, "Changing LaTeX encoding from "
1572 << oldEnc.name() << " to " << newEnc.name());
1573 os << setEncoding(newEnc.iconvName());
1574 if (bparams.inputenc == "default")
1575 return make_pair(true, 0);
1577 docstring const inputenc_arg(from_ascii(newEnc.latexName()));
1578 OutputState * state = getOutputState();
1579 switch (newEnc.package()) {
1580 case Encoding::none:
1581 case Encoding::japanese:
1582 // shouldn't ever reach here, see above
1583 return make_pair(true, 0);
1584 case Encoding::inputenc: {
1585 int count = inputenc_arg.length();
1586 if (oldEnc.package() == Encoding::CJK &&
1587 state->open_encoding_ == CJK) {
1589 state->open_encoding_ = none;
1592 else if (oldEnc.package() == Encoding::inputenc &&
1593 state->open_encoding_ == inputenc) {
1595 state->open_encoding_ = none;
1598 if (runparams.local_font != 0
1599 && oldEnc.package() == Encoding::CJK) {
1600 // within insets, \inputenc switches need
1601 // to be embraced within \bgroup...\egroup;
1605 state->open_encoding_ = inputenc;
1607 // with the japanese option, inputenc is omitted.
1608 if (runparams.use_japanese)
1609 return make_pair(true, count);
1610 os << "\\inputencoding{" << inputenc_arg << '}';
1611 return make_pair(true, count + 16);
1613 case Encoding::CJK: {
1614 int count = inputenc_arg.length();
1615 if (oldEnc.package() == Encoding::CJK &&
1616 state->open_encoding_ == CJK) {
1620 if (oldEnc.package() == Encoding::inputenc &&
1621 state->open_encoding_ == inputenc) {
1625 os << "\\begin{CJK}{" << inputenc_arg << "}{"
1626 << from_ascii(bparams.fonts_cjk) << "}";
1627 state->open_encoding_ = CJK;
1628 return make_pair(true, count + 15);
1631 // Dead code to avoid a warning:
1632 return make_pair(true, 0);