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"
15 #include "BiblioInfo.h"
17 #include "BufferParams.h"
20 #include "InsetList.h"
22 #include "LaTeXFeatures.h"
25 #include "OutputParams.h"
26 #include "Paragraph.h"
27 #include "ParagraphParameters.h"
28 #include "texstream.h"
29 #include "TextClass.h"
31 #include "insets/InsetBibitem.h"
32 #include "insets/InsetArgument.h"
34 #include "frontends/alert.h"
36 #include "support/lassert.h"
37 #include "support/convert.h"
38 #include "support/debug.h"
39 #include "support/lstrings.h"
40 #include "support/lyxalgo.h"
41 #include "support/textutils.h"
42 #include "support/gettext.h"
44 #include <QThreadStorage>
50 using namespace lyx::support;
66 OutputState() : open_encoding_(none), cjk_inherited_(0),
67 prev_env_language_(nullptr), nest_level_(0)
70 OpenEncoding open_encoding_;
72 Language const * prev_env_language_;
74 stack<int> lang_switch_depth_; // Both are always empty when
75 stack<string> open_polyglossia_lang_; // not using polyglossia
79 OutputState * getOutputState()
81 // FIXME An instance of OutputState should be kept around for each export
82 // instead of using local thread storage
83 static QThreadStorage<OutputState *> outputstate;
84 if (!outputstate.hasLocalData())
85 outputstate.setLocalData(new OutputState);
86 return outputstate.localData();
90 string const & openLanguageName(OutputState const * state)
92 // Return a reference to the last active language opened with
93 // polyglossia or when using begin/end commands. If none or when
94 // using babel with only a begin command, return a reference to
97 static string const empty;
99 return state->open_polyglossia_lang_.empty()
101 : state->open_polyglossia_lang_.top();
105 bool atSameLastLangSwitchDepth(OutputState const * state)
107 // Return true if the actual nest level is the same at which the
108 // language was switched when using polyglossia or begin/end
109 // commands. Instead, return always true when using babel with
110 // only a begin command.
112 return state->lang_switch_depth_.size() == 0
114 : abs(state->lang_switch_depth_.top()) == state->nest_level_;
118 bool isLocalSwitch(OutputState const * state)
120 // Return true if the language was opened by a local command switch.
122 return state->lang_switch_depth_.size()
123 && state->lang_switch_depth_.top() < 0;
127 bool langOpenedAtThisLevel(OutputState const * state)
129 // Return true if the language was opened at the current nesting level.
131 return state->lang_switch_depth_.size()
132 && abs(state->lang_switch_depth_.top()) == state->nest_level_;
136 string const getPolyglossiaEnvName(Language const * lang)
138 string result = lang->polyglossia();
139 if (result == "arabic")
140 // exceptional spelling; see polyglossia docs.
146 string const getPolyglossiaBegin(string const & lang_begin_command,
147 string const & lang, string const & opts,
148 bool const localswitch = false)
152 // we need to revert the upcasing done in getPolyglossiaEnvName()
153 // in case we have a local polyglossia command (\textarabic).
154 string language = localswitch ? ascii_lowercase(lang) : lang;
155 result = subst(lang_begin_command, "$$lang", language);
157 string options = opts.empty() ?
158 string() : "[" + opts + "]";
159 result = subst(result, "$$opts", options);
165 struct TeXEnvironmentData
168 Layout const * style;
169 Language const * par_language;
170 Encoding const * prev_encoding;
171 bool leftindent_open;
175 static TeXEnvironmentData prepareEnvironment(Buffer const & buf,
177 ParagraphList::const_iterator pit,
179 OutputParams const & runparams)
181 TeXEnvironmentData data;
183 BufferParams const & bparams = buf.params();
185 // FIXME This test should not be necessary.
186 // We should perhaps issue an error if it is.
187 Layout const & style = text.inset().forcePlainLayout() ?
188 bparams.documentClass().plainLayout() : pit->layout();
190 ParagraphList const & paragraphs = text.paragraphs();
191 ParagraphList::const_iterator const priorpit =
192 pit == paragraphs.begin() ? pit : prev(pit, 1);
194 OutputState * state = getOutputState();
195 bool const use_prev_env_language = state->prev_env_language_ != nullptr
196 && priorpit->layout().isEnvironment()
197 && (priorpit->getDepth() > pit->getDepth()
198 || (priorpit->getDepth() == pit->getDepth()
199 && priorpit->layout() != pit->layout()));
201 data.prev_encoding = runparams.encoding;
202 data.par_language = pit->getParLanguage(bparams);
203 Language const * const doc_language = bparams.language;
204 Language const * const prev_par_language =
205 (pit != paragraphs.begin())
206 ? (use_prev_env_language ? state->prev_env_language_
207 : priorpit->getParLanguage(bparams))
210 bool const use_polyglossia = runparams.use_polyglossia;
211 string const par_lang = use_polyglossia ?
212 getPolyglossiaEnvName(data.par_language) : data.par_language->babel();
213 string const prev_par_lang = use_polyglossia ?
214 getPolyglossiaEnvName(prev_par_language) : prev_par_language->babel();
215 string const doc_lang = use_polyglossia ?
216 getPolyglossiaEnvName(doc_language) : doc_language->babel();
217 string const lang_begin_command = use_polyglossia ?
218 "\\begin{$$lang}" : lyxrc.language_command_begin;
219 string const lang_end_command = use_polyglossia ?
220 "\\end{$$lang}" : lyxrc.language_command_end;
221 bool const using_begin_end = use_polyglossia ||
222 !lang_end_command.empty();
224 // For polyglossia, switch language outside of environment, if possible.
225 if (par_lang != prev_par_lang) {
226 if ((!using_begin_end || langOpenedAtThisLevel(state)) &&
227 !lang_end_command.empty() &&
228 prev_par_lang != doc_lang &&
229 !prev_par_lang.empty()) {
230 os << from_ascii(subst(
234 // the '%' is necessary to prevent unwanted whitespace
240 // If no language was explicitly opened and we are using
241 // polyglossia or begin/end commands, then the current
242 // language is the document language.
243 string const & cur_lang = using_begin_end
244 && state->lang_switch_depth_.size()
245 ? openLanguageName(state)
248 if ((lang_end_command.empty() ||
249 par_lang != doc_lang ||
250 par_lang != cur_lang) &&
252 string bc = use_polyglossia ?
253 getPolyglossiaBegin(lang_begin_command, par_lang,
254 data.par_language->polyglossiaOpts())
255 : subst(lang_begin_command, "$$lang", par_lang);
257 // the '%' is necessary to prevent unwanted whitespace
260 pushLanguageName(par_lang);
264 data.leftindent_open = false;
265 if (!pit->params().leftIndent().zero()) {
266 os << "\\begin{LyXParagraphLeftIndent}{"
267 << from_ascii(pit->params().leftIndent().asLatexString())
269 data.leftindent_open = true;
272 if (style.isEnvironment())
273 state->nest_level_ += 1;
275 if (style.isEnvironment() && !style.latexname().empty()) {
276 os << "\\begin{" << from_ascii(style.latexname()) << '}';
277 if (!style.latexargs().empty()) {
278 OutputParams rp = runparams;
279 rp.local_font = &pit->getFirstFontSettings(bparams);
280 latexArgInsets(paragraphs, pit, os, rp, style.latexargs());
282 if (style.latextype == LATEX_LIST_ENVIRONMENT) {
284 << pit->params().labelWidthString()
286 } else if (style.labeltype == LABEL_BIBLIO) {
287 if (pit->params().labelWidthString().empty())
288 os << '{' << bibitemWidest(buf, runparams) << "}\n";
291 << pit->params().labelWidthString()
294 os << from_ascii(style.latexparam()) << '\n';
295 if (style.latextype == LATEX_BIB_ENVIRONMENT
296 || style.latextype == LATEX_ITEM_ENVIRONMENT
297 || style.latextype == LATEX_LIST_ENVIRONMENT) {
298 OutputParams rp = runparams;
299 rp.local_font = &pit->getFirstFontSettings(bparams);
300 latexArgInsets(paragraphs, pit, os, rp, style.listpreamble(),
306 // in multilingual environments, the CJK tags have to be nested properly
307 data.cjk_nested = false;
308 if (!bparams.useNonTeXFonts
309 && (bparams.inputenc == "auto-legacy"
310 || bparams.inputenc == "auto-legacy-plain")
311 && data.par_language->encoding()->package() == Encoding::CJK
312 && state->open_encoding_ != CJK && pit->isMultiLingual(bparams)) {
313 if (prev_par_language->encoding()->package() == Encoding::CJK) {
314 os << "\\begin{CJK}{"
315 << from_ascii(data.par_language->encoding()->latexName())
316 << "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
318 state->open_encoding_ = CJK;
319 data.cjk_nested = true;
325 static void finishEnvironment(otexstream & os, OutputParams const & runparams,
326 TeXEnvironmentData const & data)
328 OutputState * state = getOutputState();
329 // BufferParams const & bparams = buf.params(); // FIXME: for speedup shortcut below, would require passing of "buf" as argument
330 if (state->open_encoding_ == CJK && data.cjk_nested) {
331 // We need to close the encoding even if it does not change
332 // to do correct environment nesting
333 os << "\\end{CJK}\n";
334 state->open_encoding_ = none;
337 if (data.style->isEnvironment()) {
339 bool const using_begin_end =
340 runparams.use_polyglossia ||
341 !lyxrc.language_command_end.empty();
342 // Close any language opened at this nest level
343 if (using_begin_end) {
344 while (langOpenedAtThisLevel(state)) {
345 if (isLocalSwitch(state)) {
349 << openLanguageName(state)
355 state->nest_level_ -= 1;
356 string const & name = data.style->latexname();
358 os << "\\end{" << from_ascii(name) << "}\n";
359 state->prev_env_language_ = data.par_language;
360 if (runparams.encoding != data.prev_encoding) {
361 runparams.encoding = data.prev_encoding;
362 os << setEncoding(data.prev_encoding->iconvName());
366 if (data.leftindent_open) {
367 os << breakln << "\\end{LyXParagraphLeftIndent}\n";
368 state->prev_env_language_ = data.par_language;
369 if (runparams.encoding != data.prev_encoding) {
370 runparams.encoding = data.prev_encoding;
371 os << setEncoding(data.prev_encoding->iconvName());
375 // Check whether we should output a blank line after the environment
376 if (!data.style->nextnoindent)
381 void TeXEnvironment(Buffer const & buf, Text const & text,
382 OutputParams const & runparams,
383 pit_type & pit, otexstream & os)
385 ParagraphList const & paragraphs = text.paragraphs();
386 ParagraphList::const_iterator ipar = paragraphs.constIterator(pit);
387 LYXERR(Debug::LATEX, "TeXEnvironment for paragraph " << pit);
389 Layout const & current_layout = ipar->layout();
390 depth_type const current_depth = ipar->params().depth();
391 Length const & current_left_indent = ipar->params().leftIndent();
393 // This is for debugging purpose at the end.
394 pit_type const par_begin = pit;
395 for (; pit < runparams.par_end; ++pit) {
396 ParagraphList::const_iterator par = paragraphs.constIterator(pit);
398 // check first if this is an higher depth paragraph.
399 bool go_out = (par->params().depth() < current_depth);
400 if (par->params().depth() == current_depth) {
401 // This environment is finished.
402 go_out |= (par->layout() != current_layout);
403 go_out |= (par->params().leftIndent() != current_left_indent);
406 // nothing to do here, restore pit and go out.
411 if (par->layout() == current_layout
412 && par->params().depth() == current_depth
413 && par->params().leftIndent() == current_left_indent) {
414 // We are still in the same environment so TeXOnePar and continue;
415 TeXOnePar(buf, text, pit, os, runparams);
419 // We are now in a deeper environment.
420 // Either par->layout() != current_layout
421 // Or par->params().depth() > current_depth
422 // Or par->params().leftIndent() != current_left_indent)
424 // FIXME This test should not be necessary.
425 // We should perhaps issue an error if it is.
426 bool const force_plain_layout = text.inset().forcePlainLayout();
427 Layout const & style = force_plain_layout
428 ? buf.params().documentClass().plainLayout()
431 if (!style.isEnvironment()) {
432 // This is a standard paragraph, no need to call TeXEnvironment.
433 TeXOnePar(buf, text, pit, os, runparams);
437 // This is a new environment.
438 TeXEnvironmentData const data =
439 prepareEnvironment(buf, text, par, os, runparams);
440 // Recursive call to TeXEnvironment!
441 TeXEnvironment(buf, text, runparams, pit, os);
442 finishEnvironment(os, runparams, data);
445 if (pit != runparams.par_end)
446 LYXERR(Debug::LATEX, "TeXEnvironment for paragraph " << par_begin << " done.");
450 void getArgInsets(otexstream & os, OutputParams const & runparams, Layout::LaTeXArgMap const & latexargs,
451 map<int, lyx::InsetArgument const *> ilist, vector<string> required, string const & prefix)
453 unsigned int const argnr = latexargs.size();
457 // Default and preset args are always output, so if they require
458 // other arguments, consider this.
459 for (auto const & larg : latexargs) {
460 Layout::latexarg const & arg = larg.second;
461 if ((!arg.presetarg.empty() || !arg.defaultarg.empty()) && !arg.requires.empty()) {
462 vector<string> req = getVectorFromString(arg.requires);
463 required.insert(required.end(), req.begin(), req.end());
467 for (unsigned int i = 1; i <= argnr; ++i) {
468 map<int, InsetArgument const *>::const_iterator lit = ilist.find(i);
469 bool inserted = false;
470 if (lit != ilist.end()) {
471 InsetArgument const * ins = (*lit).second;
473 Layout::LaTeXArgMap::const_iterator const lait =
474 latexargs.find(ins->name());
475 if (lait != latexargs.end()) {
476 Layout::latexarg arg = (*lait).second;
480 ldelim = arg.mandatory ?
481 from_ascii("{") : from_ascii("[");
482 rdelim = arg.mandatory ?
483 from_ascii("}") : from_ascii("]");
485 if (!arg.ldelim.empty())
487 if (!arg.rdelim.empty())
489 ins->latexArgument(os, runparams, ldelim, rdelim, arg.presetarg);
490 if (prefix == "listpreamble:")
497 Layout::LaTeXArgMap::const_iterator lait = latexargs.begin();
498 Layout::LaTeXArgMap::const_iterator const laend = latexargs.end();
499 for (; lait != laend; ++lait) {
500 string const name = prefix + convert<string>(i);
501 if ((*lait).first == name) {
502 Layout::latexarg arg = (*lait).second;
503 docstring preset = arg.presetarg;
504 if (!arg.defaultarg.empty()) {
507 preset += arg.defaultarg;
510 docstring ldelim = arg.ldelim.empty() ?
511 from_ascii("{") : arg.ldelim;
512 docstring rdelim = arg.rdelim.empty() ?
513 from_ascii("}") : arg.rdelim;
514 os << ldelim << preset << rdelim;
515 } else if (!preset.empty()) {
516 docstring ldelim = arg.ldelim.empty() ?
517 from_ascii("[") : arg.ldelim;
518 docstring rdelim = arg.rdelim.empty() ?
519 from_ascii("]") : arg.rdelim;
520 os << ldelim << preset << rdelim;
521 } else if (find(required.begin(), required.end(),
522 (*lait).first) != required.end()) {
523 docstring ldelim = arg.ldelim.empty() ?
524 from_ascii("[") : arg.ldelim;
525 docstring rdelim = arg.rdelim.empty() ?
526 from_ascii("]") : arg.rdelim;
527 os << ldelim << rdelim;
534 if (runparams.for_search) {
535 // Mark end of arguments for findadv() only
536 os << "\\endarguments{}";
544 void pushLanguageName(string const & lang_name, bool localswitch)
546 OutputState * state = getOutputState();
548 int nest_level = localswitch ? -state->nest_level_ : state->nest_level_;
549 state->lang_switch_depth_.push(nest_level);
550 state->open_polyglossia_lang_.push(lang_name);
554 void popLanguageName()
556 OutputState * state = getOutputState();
558 state->lang_switch_depth_.pop();
559 state->open_polyglossia_lang_.pop();
563 string const & openLanguageName()
565 OutputState * state = getOutputState();
567 return openLanguageName(state);
573 void addArgInsets(Paragraph const & par, string const & prefix,
574 Layout::LaTeXArgMap const & latexargs,
575 map<int, InsetArgument const *> & ilist,
576 vector<string> & required)
578 for (auto const & table : par.insetList()) {
579 InsetArgument const * arg = table.inset->asInsetArgument();
582 if (arg->name().empty()) {
583 LYXERR0("Error: Unnamed argument inset!");
586 string const name = prefix.empty() ?
587 arg->name() : split(arg->name(), ':');
588 // why converting into an integer?
589 unsigned int const nr = convert<unsigned int>(name);
590 if (ilist.find(nr) == ilist.end())
592 Layout::LaTeXArgMap::const_iterator const lit =
593 latexargs.find(arg->name());
594 if (lit != latexargs.end()) {
595 Layout::latexarg const & larg = lit->second;
596 vector<string> req = getVectorFromString(larg.requires);
597 move(req.begin(), req.end(), back_inserter(required));
605 void latexArgInsets(Paragraph const & par, otexstream & os,
606 OutputParams const & runparams,
607 Layout::LaTeXArgMap const & latexargs,
608 string const & prefix)
610 map<int, InsetArgument const *> ilist;
611 vector<string> required;
612 addArgInsets(par, prefix, latexargs, ilist, required);
613 getArgInsets(os, runparams, latexargs, ilist, required, prefix);
617 void latexArgInsets(ParagraphList const & pars,
618 ParagraphList::const_iterator pit,
619 otexstream & os, OutputParams const & runparams,
620 Layout::LaTeXArgMap const & latexargs,
621 string const & prefix)
623 map<int, InsetArgument const *> ilist;
624 vector<string> required;
626 depth_type const current_depth = pit->params().depth();
627 Layout const current_layout = pit->layout();
629 // get the first paragraph in sequence with this layout and depth
632 if (lyx::prev(pit, offset) == pars.begin())
634 ParagraphList::const_iterator priorpit = lyx::prev(pit, offset + 1);
635 if (priorpit->layout() == current_layout
636 && priorpit->params().depth() == current_depth)
642 ParagraphList::const_iterator spit = lyx::prev(pit, offset);
644 for (; spit != pars.end(); ++spit) {
645 if (spit->layout() != current_layout ||
646 spit->params().depth() < current_depth)
648 if (spit->params().depth() > current_depth)
650 addArgInsets(*spit, prefix, latexargs, ilist, required);
652 getArgInsets(os, runparams, latexargs, ilist, required, prefix);
656 void latexArgInsetsForParent(ParagraphList const & pars, otexstream & os,
657 OutputParams const & runparams,
658 Layout::LaTeXArgMap const & latexargs,
659 string const & prefix)
661 map<int, InsetArgument const *> ilist;
662 vector<string> required;
664 for (Paragraph const & par : pars) {
665 if (par.layout().hasArgs())
666 // The InsetArguments inside this paragraph refer to this paragraph
668 addArgInsets(par, prefix, latexargs, ilist, required);
670 getArgInsets(os, runparams, latexargs, ilist, required, prefix);
676 // output the proper paragraph start according to latextype.
677 void parStartCommand(Paragraph const & par, otexstream & os,
678 OutputParams const & runparams, Layout const & style)
680 switch (style.latextype) {
682 if (par.needsCProtection(runparams.moving_arg)) {
683 if (contains(runparams.active_chars, '^'))
684 // cprotect relies on ^ being ignored
685 os << "\\begingroup\\catcode`\\^=9";
688 os << '\\' << from_ascii(style.latexname());
691 if (!style.latexargs().empty())
692 latexArgInsets(par, os, runparams, style.latexargs());
693 os << from_ascii(style.latexparam());
695 case LATEX_ITEM_ENVIRONMENT:
696 case LATEX_LIST_ENVIRONMENT:
697 if (runparams.for_search) {
698 os << "\\" + style.itemcommand() << "{" << style.latexname() << "}";
701 os << "\\" + style.itemcommand();
703 if (!style.itemargs().empty())
704 latexArgInsets(par, os, runparams, style.itemargs(), "item:");
708 case LATEX_ENVIRONMENT:
709 if (runparams.for_search) {
710 os << "\\latexenvironment{" << style.latexname() << "}{";
713 case LATEX_BIB_ENVIRONMENT:
714 // ignore this, the inset will write itself
723 // FIXME: this should be anonymous
724 void TeXOnePar(Buffer const & buf,
728 OutputParams const & runparams_in,
729 string const & everypar,
730 int start_pos, int end_pos,
733 BufferParams const & bparams = runparams_in.is_child
734 ? buf.masterParams() : buf.params();
735 ParagraphList const & paragraphs = text.paragraphs();
736 Paragraph const & par = paragraphs.at(pit);
737 // FIXME This check should not really be needed.
738 // Perhaps we should issue an error if it is.
739 Layout const & style = text.inset().forcePlainLayout() ?
740 bparams.documentClass().plainLayout() : par.layout();
742 if (style.inpreamble && !force)
745 LYXERR(Debug::LATEX, "TeXOnePar for paragraph " << pit << " ptr " << &par << " '"
748 OutputParams runparams = runparams_in;
749 runparams.isLastPar = (pit == pit_type(paragraphs.size() - 1));
750 // We reinitialize par begin and end to be on the safe side
751 // with embedded inset as we don't know if they set those
753 runparams.par_begin = 0;
754 runparams.par_end = 0;
756 bool const maintext = text.isMainText();
757 // we are at the beginning of an inset and CJK is already open;
758 // we count inheritation levels to get the inset nesting right.
759 OutputState * state = getOutputState();
760 if (pit == 0 && !maintext
761 && (state->cjk_inherited_ > 0 || state->open_encoding_ == CJK)) {
762 state->cjk_inherited_ += 1;
763 state->open_encoding_ = none;
766 if (text.inset().isPassThru()) {
767 Font const outerfont = text.outerFont(pit);
769 // No newline before first paragraph in this lyxtext
770 if (pit > 0 && !text.inset().getLayout().parbreakIgnored()) {
772 if (!text.inset().getLayout().parbreakIsNewline())
776 par.latex(bparams, outerfont, os, runparams, start_pos, end_pos, force);
780 Paragraph const * nextpar = runparams.isLastPar
781 ? nullptr : ¶graphs.at(pit + 1);
783 bool const intitle_command = style.intitle && style.latextype == LATEX_COMMAND;
785 if (style.pass_thru) {
786 Font const outerfont = text.outerFont(pit);
787 parStartCommand(par, os, runparams, style);
788 if (style.isCommand() && style.needprotect)
789 // Due to the moving argument, some fragile
790 // commands (labels, index entries)
791 // are output after this command (#2154)
792 runparams.postpone_fragile_stuff = true;
796 par.latex(bparams, outerfont, os, runparams, start_pos, end_pos, force);
798 // I did not create a parEndCommand for this minuscule
799 // task because in the other user of parStartCommand
800 // the code is different (JMarc)
801 if (style.isCommand()) {
803 if (par.needsCProtection(runparams.moving_arg)
804 && contains(runparams.active_chars, '^'))
810 if (!style.parbreak_is_newline) {
812 } else if (nextpar && !style.isEnvironment()) {
813 Layout const nextstyle = text.inset().forcePlainLayout()
814 ? bparams.documentClass().plainLayout()
816 if (nextstyle.name() != style.name())
823 // This paragraph's language
824 Language const * const par_language = par.getParLanguage(bparams);
825 Language const * const nextpar_language = nextpar ?
826 nextpar->getParLanguage(bparams) : nullptr;
827 // The document's language
828 Language const * const doc_language = bparams.language;
829 // The language that was in effect when the environment this paragraph is
830 // inside of was opened
831 Language const * const outer_language =
832 (runparams.local_font != nullptr) ?
833 runparams.local_font->language() : doc_language;
835 Paragraph const * priorpar = (pit == 0) ? nullptr : ¶graphs.at(pit - 1);
837 // The previous language that was in effect is the language of the
838 // previous paragraph, unless the previous paragraph is inside an
839 // environment with nesting depth greater than (or equal to, but with
840 // a different layout) the current one. If there is no previous
841 // paragraph, the previous language is the outer language.
842 // Note further that we take the outer language also if the prior par
843 // is PassThru, since in that case it has latex_language, and all secondary
844 // languages have been closed (#10793).
845 bool const use_prev_env_language = state->prev_env_language_ != nullptr
847 && priorpar->layout().isEnvironment()
848 && (priorpar->getDepth() > par.getDepth()
849 || (priorpar->getDepth() == par.getDepth()
850 && priorpar->layout() != par.layout()));
851 Language const * const prev_language =
852 runparams_in.for_search ?
853 languages.getLanguage("ignore")
854 :(priorpar && !priorpar->isPassThru())
855 ? (use_prev_env_language ? state->prev_env_language_
856 : priorpar->getParLanguage(bparams))
859 bool const use_polyglossia = runparams.use_polyglossia;
860 string const par_lang = use_polyglossia ?
861 getPolyglossiaEnvName(par_language): par_language->babel();
862 string const prev_lang = use_polyglossia ?
863 getPolyglossiaEnvName(prev_language) : prev_language->babel();
864 string const outer_lang = use_polyglossia ?
865 getPolyglossiaEnvName(outer_language) : outer_language->babel();
866 string const nextpar_lang = nextpar_language ? (use_polyglossia ?
867 getPolyglossiaEnvName(nextpar_language) :
868 nextpar_language->babel()) : string();
869 string lang_begin_command = use_polyglossia ?
870 "\\begin{$$lang}$$opts" : lyxrc.language_command_begin;
871 string lang_end_command = use_polyglossia ?
872 "\\end{$$lang}" : lyxrc.language_command_end;
873 // the '%' is necessary to prevent unwanted whitespace
874 string lang_command_termination = "%\n";
875 bool const using_begin_end = use_polyglossia ||
876 !lang_end_command.empty();
878 // For InTitle commands, we need to switch the language inside the command
879 // (see #10849); thus open the command here.
880 if (intitle_command) {
881 parStartCommand(par, os, runparams, style);
882 if (style.isCommand() && style.needprotect)
883 // Due to the moving argument, some fragile
884 // commands (labels, index entries)
885 // are output after this command (#2154)
886 runparams.postpone_fragile_stuff = true;
890 // In some insets (such as Arguments), we cannot use \selectlanguage.
891 // Also, if an RTL language is set via environment in polyglossia,
892 // only a nested \\text<lang> command will reset the direction for LTR
893 // languages (see # 10111).
894 bool const in_polyglossia_rtl_env =
896 && runparams.local_font != nullptr
897 && outer_language->rightToLeft()
898 && !par_language->rightToLeft();
899 bool const localswitch = runparams_in.for_search
900 || text.inset().forceLocalFontSwitch()
901 || (using_begin_end && text.inset().forcePlainLayout())
902 || in_polyglossia_rtl_env;
904 lang_begin_command = use_polyglossia ?
905 "\\text$$lang$$opts{" : lyxrc.language_command_local;
906 lang_end_command = "}";
907 lang_command_termination.clear();
910 bool const localswitch_needed = localswitch && par_lang != outer_lang;
912 // localswitches need to be closed and reopened at each par
913 if (runparams_in.for_search || ((par_lang != prev_lang || localswitch_needed)
914 // check if we already put language command in TeXEnvironment()
915 && !(style.isEnvironment()
916 && (pit == 0 || (priorpar->layout() != par.layout()
917 && priorpar->getDepth() <= par.getDepth())
918 || priorpar->getDepth() < par.getDepth())))) {
920 && (!using_begin_end || langOpenedAtThisLevel(state))
921 && !lang_end_command.empty()
922 && prev_lang != outer_lang
923 && !prev_lang.empty()
924 && (!using_begin_end || !style.isEnvironment())) {
925 os << from_ascii(subst(lang_end_command,
928 << lang_command_termination;
933 // We need to open a new language if we couldn't close the previous
934 // one (because there's no language_command_end); and even if we closed
935 // the previous one, if the current language is different than the
936 // outer_language (which is currently in effect once the previous one
938 if ((lang_end_command.empty() || par_lang != outer_lang
940 || (style.isEnvironment() && par_lang != prev_lang)))
941 && !par_lang.empty()) {
942 // If we're inside an inset, and that inset is within an \L or \R
943 // (or equivalents), then within the inset, too, any opposite
944 // language paragraph should appear within an \L or \R (in addition
945 // to, outside of, the normal language switch commands).
946 // This behavior is not correct for ArabTeX, though.
949 && par_language->lang() != "arabic_arabtex"
950 && outer_language->lang() != "arabic_arabtex"
951 // are we in an inset?
952 && runparams.local_font != nullptr
953 // is the inset within an \L or \R?
955 // FIXME: currently, we don't check this; this means that
956 // we'll have unnnecessary \L and \R commands, but that
957 // doesn't seem to hurt (though latex will complain)
959 // is this paragraph in the opposite direction?
960 && runparams.local_font->isRightToLeft() != par_language->rightToLeft()) {
961 // FIXME: I don't have a working copy of the Arabi package, so
962 // I'm not sure if the farsi and arabic_arabi stuff is correct
964 if (par_language->lang() == "farsi")
966 else if (outer_language->lang() == "farsi")
968 else if (par_language->lang() == "arabic_arabi")
970 else if (outer_language->lang() == "arabic_arabi")
972 // remaining RTL languages currently is hebrew
973 else if (par_language->rightToLeft())
978 // With CJK, the CJK tag has to be closed first (see below)
979 if ((runparams.encoding->package() != Encoding::CJK
980 || bparams.useNonTeXFonts
981 || runparams.for_search)
982 && (par_lang != openLanguageName(state) || localswitch)
983 && !par_lang.empty()) {
984 string bc = use_polyglossia ?
985 getPolyglossiaBegin(lang_begin_command, par_lang,
986 par_language->polyglossiaOpts(),
988 : subst(lang_begin_command, "$$lang", par_lang);
990 os << lang_command_termination;
992 pushLanguageName(par_lang, localswitch);
997 // Switch file encoding if necessary; no need to do this for "auto-legacy-plain"
998 // encoding, since this only affects the position of the outputted
999 // \inputencoding command; the encoding switch will occur when necessary
1000 if (bparams.inputenc == "auto-legacy"
1001 && !runparams.isFullUnicode() // Xe/LuaTeX use one document-wide encoding (see also switchEncoding())
1002 && runparams.encoding->package() != Encoding::japanese
1003 && runparams.encoding->package() != Encoding::none) {
1004 // Look ahead for future encoding changes.
1005 // We try to output them at the beginning of the paragraph,
1006 // since the \inputencoding command is not allowed e.g. in
1007 // sections. For this reason we only set runparams.moving_arg
1008 // after checking for the encoding change, otherwise the
1009 // change would be always avoided by switchEncoding().
1010 for (pos_type i = 0; i < par.size(); ++i) {
1011 char_type const c = par.getChar(i);
1012 Encoding const * const encoding =
1013 par.getFontSettings(bparams, i).language()->encoding();
1014 if (encoding->package() != Encoding::CJK
1015 && runparams.encoding->package() == Encoding::inputenc
1020 // All characters before c are in the ASCII range, and
1021 // c is non-ASCII (but no inset), so change the
1022 // encoding to that required by the language of c.
1023 // With CJK, only add switch if we have CJK content at the beginning
1025 if (i != 0 && encoding->package() == Encoding::CJK)
1028 pair<bool, int> enc_switch = switchEncoding(os.os(),
1029 bparams, runparams, *encoding);
1030 // the following is necessary after a CJK environment in a multilingual
1031 // context (nesting issue).
1032 if (par_language->encoding()->package() == Encoding::CJK
1033 && state->open_encoding_ != CJK && state->cjk_inherited_ == 0) {
1034 os << "\\begin{CJK}{"
1035 << from_ascii(par_language->encoding()->latexName())
1036 << "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
1037 state->open_encoding_ = CJK;
1039 if (encoding->package() != Encoding::none && enc_switch.first) {
1040 if (enc_switch.second > 0) {
1041 // the '%' is necessary to prevent unwanted whitespace
1044 // With CJK, the CJK tag had to be closed first (see above)
1045 if (runparams.encoding->package() == Encoding::CJK
1046 && par_lang != openLanguageName(state)
1047 && !par_lang.empty()) {
1048 os << subst(lang_begin_command, "$$lang", par_lang)
1049 << lang_command_termination;
1050 if (using_begin_end)
1051 pushLanguageName(par_lang, localswitch);
1053 runparams.encoding = encoding;
1059 runparams.moving_arg |= style.needprotect;
1060 if (style.needmboxprotect)
1061 ++runparams.inulemcmd;
1062 Encoding const * const prev_encoding = runparams.encoding;
1064 bool const useSetSpace = bparams.documentClass().provides("SetSpace");
1065 if (par.allowParagraphCustomization()) {
1066 if (par.params().startOfAppendix()) {
1067 os << "\n\\appendix\n";
1070 // InTitle commands must use switches (not environments)
1071 // inside the commands (see #9332)
1072 if (style.intitle) {
1073 if (!par.params().spacing().isDefault())
1075 if (runparams.moving_arg)
1077 os << from_ascii(par.params().spacing().writeCmd(useSetSpace));
1080 if (!par.params().spacing().isDefault()
1081 && (pit == 0 || !priorpar->hasSameLayout(par)))
1083 os << from_ascii(par.params().spacing().writeEnvirBegin(useSetSpace))
1087 if (style.isCommand()) {
1093 // For InTitle commands, we already started the command before
1094 // the language switch
1095 if (!intitle_command) {
1096 parStartCommand(par, os, runparams, style);
1097 if (style.isCommand() && style.needprotect)
1098 // Due to the moving argument, some fragile
1099 // commands (labels, index entries)
1100 // are output after this command (#2154)
1101 runparams.postpone_fragile_stuff = true;
1104 Font const outerfont = text.outerFont(pit);
1107 os << from_utf8(everypar);
1108 par.latex(bparams, outerfont, os, runparams, start_pos, end_pos, force);
1110 Font const font = par.empty()
1111 ? par.getLayoutFont(bparams, outerfont)
1112 : par.getFont(bparams, par.size() - 1, outerfont);
1114 bool const is_command = style.isCommand();
1116 // InTitle commands need to be closed after the language has been closed.
1117 if (!intitle_command) {
1120 if (!style.postcommandargs().empty())
1121 latexArgInsets(par, os, runparams, style.postcommandargs(), "post:");
1122 if (!runparams.post_macro.empty()) {
1123 // Output the stored fragile commands (labels, indices etc.)
1124 // that need to be output after the command with moving argument.
1125 os << runparams.post_macro;
1126 runparams.post_macro.clear();
1128 if (par.needsCProtection(runparams.moving_arg)
1129 && contains(runparams.active_chars, '^'))
1131 if (runparams.encoding != prev_encoding) {
1132 runparams.encoding = prev_encoding;
1133 os << setEncoding(prev_encoding->iconvName());
1138 bool pending_newline = false;
1139 bool unskip_newline = false;
1140 bool close_lang_switch = false;
1141 switch (style.latextype) {
1142 case LATEX_ITEM_ENVIRONMENT:
1143 case LATEX_LIST_ENVIRONMENT:
1144 if ((nextpar && par_lang != nextpar_lang
1145 && nextpar->getDepth() == par.getDepth())
1146 || (atSameLastLangSwitchDepth(state) && nextpar
1147 && nextpar->getDepth() < par.getDepth()))
1148 close_lang_switch = using_begin_end;
1149 if (nextpar && par.params().depth() < nextpar->params().depth())
1150 pending_newline = !text.inset().getLayout().parbreakIgnored();
1152 case LATEX_ENVIRONMENT: {
1153 // if it's the last paragraph of the current environment
1154 // skip it otherwise fall through
1156 && ((nextpar->layout() != par.layout()
1157 || nextpar->params().depth() != par.params().depth())
1158 || (!using_begin_end || par_lang != nextpar_lang)))
1160 close_lang_switch = using_begin_end;
1167 // we don't need it for the last paragraph and in InTitle commands!!!
1168 if (nextpar && !intitle_command)
1169 pending_newline = !text.inset().getLayout().parbreakIgnored();
1172 // InTitle commands use switches (not environments) for space settings
1173 if (par.allowParagraphCustomization() && !style.intitle) {
1174 if (!par.params().spacing().isDefault()
1175 && (runparams.isLastPar || !nextpar->hasSameLayout(par))) {
1176 if (pending_newline)
1179 string const endtag =
1180 par.params().spacing().writeEnvirEnd(useSetSpace);
1181 if (prefixIs(endtag, "\\end{"))
1184 os << from_ascii(endtag);
1185 pending_newline = true;
1189 // Closing the language is needed for the last paragraph in a given language
1190 // as well as for any InTitleCommand (since these set the language locally);
1191 // it is also needed if we're within an \L or \R that we may have opened above
1192 // (not necessarily in this paragraph) and are about to close.
1193 bool closing_rtl_ltr_environment = !using_begin_end
1195 && (par_language->lang() != "arabic_arabtex"
1196 && outer_language->lang() != "arabic_arabtex")
1197 // have we opened an \L or \R environment?
1198 && runparams.local_font != nullptr
1199 && runparams.local_font->isRightToLeft() != par_language->rightToLeft()
1200 // are we about to close the language?
1201 &&((nextpar && par_lang != nextpar_lang)
1202 || (runparams.isLastPar && par_lang != outer_lang));
1204 if (localswitch_needed
1205 || (intitle_command && using_begin_end)
1206 || closing_rtl_ltr_environment
1207 || (((runparams.isLastPar && !runparams.inbranch) || close_lang_switch)
1208 && (par_lang != outer_lang || (using_begin_end
1209 && style.isEnvironment()
1210 && par_lang != nextpar_lang)))) {
1211 // Since \selectlanguage write the language to the aux file,
1212 // we need to reset the language at the end of footnote or
1215 if (!localswitch && (pending_newline || close_lang_switch))
1218 // when the paragraph uses CJK, the language has to be closed earlier
1219 if ((font.language()->encoding()->package() != Encoding::CJK)
1220 || bparams.useNonTeXFonts
1221 || runparams_in.for_search) {
1222 if (lang_end_command.empty()) {
1223 // If this is a child, we should restore the
1224 // master language after the last paragraph.
1225 Language const * const current_language =
1226 (runparams.isLastPar && runparams.master_language)
1227 ? runparams.master_language
1229 string const current_lang = use_polyglossia
1230 ? getPolyglossiaEnvName(current_language)
1231 : current_language->babel();
1232 if (!current_lang.empty()
1233 && current_lang != openLanguageName(state)) {
1234 string bc = use_polyglossia ?
1235 getPolyglossiaBegin(lang_begin_command, current_lang,
1236 current_language->polyglossiaOpts(),
1238 : subst(lang_begin_command, "$$lang", current_lang);
1240 pending_newline = !localswitch
1241 && !text.inset().getLayout().parbreakIgnored();
1242 unskip_newline = !localswitch;
1243 if (using_begin_end)
1244 pushLanguageName(current_lang, localswitch);
1246 } else if ((!using_begin_end ||
1247 langOpenedAtThisLevel(state)) &&
1248 !par_lang.empty()) {
1249 // If we are in an environment, we have to
1250 // close the "outer" language afterwards
1251 string const & cur_lang = openLanguageName(state);
1252 if (!style.isEnvironment()
1253 || (close_lang_switch
1254 && atSameLastLangSwitchDepth(state)
1255 && par_lang != outer_lang
1256 && (par_lang != cur_lang
1257 || (cur_lang != outer_lang
1259 && style != nextpar->layout())))
1260 || (atSameLastLangSwitchDepth(state)
1261 && state->lang_switch_depth_.size()
1262 && cur_lang != par_lang)
1263 || in_polyglossia_rtl_env)
1265 if (using_begin_end && !localswitch)
1267 os << from_ascii(subst(
1271 pending_newline = !localswitch
1272 && !text.inset().getLayout().parbreakIgnored();
1273 unskip_newline = !localswitch;
1274 if (using_begin_end)
1280 if (closing_rtl_ltr_environment)
1283 // InTitle commands need to be closed after the language has been closed.
1284 if (intitle_command) {
1287 if (!style.postcommandargs().empty())
1288 latexArgInsets(par, os, runparams, style.postcommandargs(), "post:");
1289 if (!runparams.post_macro.empty()) {
1290 // Output the stored fragile commands (labels, indices etc.)
1291 // that need to be output after the command with moving argument.
1292 os << runparams.post_macro;
1293 runparams.post_macro.clear();
1295 if (par.needsCProtection(runparams.moving_arg)
1296 && contains(runparams.active_chars, '^'))
1298 if (runparams.encoding != prev_encoding) {
1299 runparams.encoding = prev_encoding;
1300 os << setEncoding(prev_encoding->iconvName());
1305 bool const last_was_separator =
1306 par.size() > 0 && par.isEnvSeparator(par.size() - 1);
1308 if (pending_newline) {
1310 // prevent unwanted whitespace
1312 if (!os.afterParbreak() && !last_was_separator)
1316 // if this is a CJK-paragraph and the next isn't, close CJK
1317 // also if the next paragraph is a multilingual environment (because of nesting)
1318 if (nextpar && state->open_encoding_ == CJK
1319 && bparams.encoding().iconvName() != "UTF-8"
1320 && bparams.encoding().package() != Encoding::CJK
1321 && (nextpar_language->encoding()->package() != Encoding::CJK
1322 || (nextpar->layout().isEnvironment() && nextpar->isMultiLingual(bparams)))
1323 // inbetween environments, CJK has to be closed later (nesting!)
1324 && (!style.isEnvironment() || !nextpar->layout().isEnvironment())) {
1325 os << "\\end{CJK}\n";
1326 state->open_encoding_ = none;
1329 // If this is the last paragraph, close the CJK environment
1330 // if necessary. If it's an environment or nested in an environment,
1331 // we'll have to \end that first.
1332 if (runparams.isLastPar && !style.isEnvironment()
1333 && par.params().depth() < 1) {
1334 switch (state->open_encoding_) {
1336 // do nothing at the end of child documents
1337 if (maintext && buf.masterBuffer() != &buf)
1339 // end of main text: also insert a \clearpage (see #5386)
1341 os << "\n\\clearpage\n\\end{CJK}\n";
1345 state->open_encoding_ = none;
1349 // FIXME: If we are in an inset and the switch happened outside this inset,
1350 // do not switch back at the end of the inset (bug #8479)
1351 // The following attempt does not help with listings-caption in a CJK document:
1352 // if (runparams_in.local_font != 0
1353 // && runparams_in.encoding == runparams_in.local_font->language()->encoding())
1356 state->open_encoding_ = none;
1366 // Information about local language is stored as a font feature.
1367 // If this is the last paragraph of the inset and a local_font was set upon entering
1368 // and we are mixing encodings ("auto-legacy" or "auto-legacy-plain" and no XeTeX or LuaTeX),
1369 // ensure the encoding is set back to the default encoding of the local language.
1370 if (runparams.isLastPar && runparams_in.local_font != nullptr
1371 && runparams_in.encoding != runparams_in.local_font->language()->encoding()
1372 && (bparams.inputenc == "auto-legacy" || bparams.inputenc == "auto-legacy-plain")
1373 && !runparams.isFullUnicode()
1375 runparams_in.encoding = runparams_in.local_font->language()->encoding();
1376 os << setEncoding(runparams_in.encoding->iconvName());
1378 // Otherwise, the current encoding should be set for the next paragraph.
1380 runparams_in.encoding = runparams.encoding;
1382 // Also pass the post_macros upstream
1383 runparams_in.post_macro = runparams.post_macro;
1386 // we don't need a newline for the last paragraph!!!
1387 // Note from JMarc: we will re-add a \n explicitly in
1388 // TeXEnvironment, because it is needed in this case
1389 if (nextpar && !os.afterParbreak() && !last_was_separator) {
1390 Layout const & next_layout = nextpar->layout();
1391 if (!text.inset().getLayout().parbreakIgnored())
1392 // Make sure to start a new line
1394 // A newline '\n' is always output before a command,
1395 // so avoid doubling it.
1396 if (!next_layout.isCommand()) {
1397 // Here we now try to avoid spurious empty lines by
1398 // outputting a paragraph break only if: (case 1) the
1399 // paragraph style allows parbreaks and no \begin, \end
1400 // or \item tags are going to follow (i.e., if the next
1401 // isn't the first or the current isn't the last
1402 // paragraph of an environment or itemize) and the
1403 // depth and alignment of the following paragraph is
1404 // unchanged, or (case 2) the following is a
1405 // non-environment paragraph whose depth is increased
1406 // but whose alignment is unchanged, or (case 3) the
1407 // paragraph is not an environment and the next one is a
1408 // non-itemize-like env at lower depth, or (case 4) the
1409 // paragraph is a command not followed by an environment
1410 // and the alignment of the current and next paragraph
1411 // is unchanged, or (case 5) the current alignment is
1412 // changed and a standard paragraph follows.
1413 DocumentClass const & tclass = bparams.documentClass();
1414 if ((style == next_layout
1415 && !style.parbreak_is_newline
1416 && !text.inset().getLayout().parbreakIsNewline()
1417 && !text.inset().getLayout().parbreakIgnored()
1418 && style.latextype != LATEX_ITEM_ENVIRONMENT
1419 && style.latextype != LATEX_LIST_ENVIRONMENT
1420 && style.align == par.getAlign(bparams)
1421 && nextpar->getDepth() == par.getDepth()
1422 && nextpar->getAlign(bparams) == par.getAlign(bparams))
1423 || (!next_layout.isEnvironment()
1424 && nextpar->getDepth() > par.getDepth()
1425 && nextpar->getAlign(bparams) == next_layout.align)
1426 || (!style.isEnvironment()
1427 && next_layout.latextype == LATEX_ENVIRONMENT
1428 && nextpar->getDepth() < par.getDepth())
1429 || (style.isCommand()
1430 && !next_layout.isEnvironment()
1431 && style.align == par.getAlign(bparams)
1432 && next_layout.align == nextpar->getAlign(bparams))
1433 || (style.align != par.getAlign(bparams)
1434 && tclass.isDefaultLayout(next_layout))) {
1440 LYXERR(Debug::LATEX, "TeXOnePar for paragraph " << pit << " done; ptr "
1441 << &par << " next " << nextpar);
1447 // LaTeX all paragraphs
1448 void latexParagraphs(Buffer const & buf,
1451 OutputParams const & runparams,
1452 string const & everypar)
1454 LASSERT(runparams.par_begin <= runparams.par_end,
1455 { os << "% LaTeX Output Error\n"; return; } );
1457 BufferParams const & bparams = buf.params();
1458 BufferParams const & mparams = buf.masterParams();
1460 bool const maintext = text.isMainText();
1461 bool const is_child = buf.masterBuffer() != &buf;
1462 bool const multibib_child = maintext && is_child
1463 && mparams.multibib == "child";
1465 if (multibib_child && mparams.useBiblatex())
1466 os << "\\newrefsection";
1467 else if (multibib_child && mparams.useBibtopic()
1468 && !buf.masterBibInfo().empty()) {
1469 os << "\\begin{btUnit}\n";
1470 runparams.openbtUnit = true;
1473 // Open a CJK environment at the beginning of the main buffer
1474 // if the document's main encoding requires the CJK package
1475 // or the document encoding is utf8 and the CJK package is required
1476 // (but not in child documents or documents using system fonts):
1477 OutputState * state = getOutputState();
1478 if (maintext && !is_child && !bparams.useNonTeXFonts
1479 && (bparams.encoding().package() == Encoding::CJK
1480 || (bparams.encoding().name() == "utf8"
1481 && runparams.use_CJK))
1483 docstring const cjkenc = bparams.encoding().iconvName() == "UTF-8"
1484 ? from_ascii("UTF8")
1485 : from_ascii(bparams.encoding().latexName());
1486 os << "\\begin{CJK}{" << cjkenc
1487 << "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
1488 state->open_encoding_ = CJK;
1490 // if "auto begin" is switched off, explicitly switch the
1491 // language on at start
1492 string const mainlang = runparams.use_polyglossia
1493 ? getPolyglossiaEnvName(bparams.language)
1494 : bparams.language->babel();
1495 string const lang_begin_command = runparams.use_polyglossia ?
1496 "\\begin{$$lang}$$opts" : lyxrc.language_command_begin;
1497 string const lang_end_command = runparams.use_polyglossia ?
1498 "\\end{$$lang}" : lyxrc.language_command_end;
1499 bool const using_begin_end = runparams.use_polyglossia ||
1500 !lang_end_command.empty();
1502 if (maintext && !lyxrc.language_auto_begin &&
1503 !mainlang.empty()) {
1505 string bc = runparams.use_polyglossia ?
1506 getPolyglossiaBegin(lang_begin_command, mainlang,
1507 bparams.language->polyglossiaOpts())
1508 : subst(lang_begin_command, "$$lang", mainlang);
1511 if (using_begin_end)
1512 pushLanguageName(mainlang);
1515 ParagraphList const & paragraphs = text.paragraphs();
1517 if (runparams.par_begin == runparams.par_end) {
1518 // The full doc will be exported but it is easier to just rely on
1519 // runparams range parameters that will be passed TeXEnvironment.
1520 runparams.par_begin = 0;
1521 runparams.par_end = paragraphs.size();
1524 pit_type pit = runparams.par_begin;
1525 // lastpit is for the language check after the loop.
1526 pit_type lastpit = pit;
1527 // variables used in the loop:
1528 bool was_title = false;
1529 bool already_title = false;
1530 DocumentClass const & tclass = bparams.documentClass();
1532 // Did we already warn about inTitle layout mixing? (we only warn once)
1533 bool gave_layout_warning = false;
1534 for (; pit < runparams.par_end; ++pit) {
1536 ParagraphList::const_iterator par = paragraphs.constIterator(pit);
1538 // FIXME This check should not be needed. We should
1539 // perhaps issue an error if it is.
1540 Layout const & layout = text.inset().forcePlainLayout() ?
1541 tclass.plainLayout() : par->layout();
1543 if (layout.intitle) {
1544 if (already_title) {
1545 if (!gave_layout_warning && !runparams.dryrun) {
1546 gave_layout_warning = true;
1547 frontend::Alert::warning(_("Error in latexParagraphs"),
1548 bformat(_("You are using at least one "
1549 "layout (%1$s) intended for the title, "
1550 "after using non-title layouts. This "
1551 "could lead to missing or incorrect output."
1554 } else if (!was_title) {
1556 if (tclass.titletype() == TITLE_ENVIRONMENT) {
1558 << from_ascii(tclass.titlename())
1562 } else if (was_title && !already_title && !layout.inpreamble) {
1563 if (tclass.titletype() == TITLE_ENVIRONMENT) {
1564 os << "\\end{" << from_ascii(tclass.titlename())
1568 os << "\\" << from_ascii(tclass.titlename())
1571 already_title = true;
1575 if (layout.isCommand() && !layout.latexname().empty()
1576 && layout.latexname() == bparams.multibib) {
1577 if (runparams.openbtUnit)
1578 os << "\\end{btUnit}\n";
1579 if (!bparams.useBiblatex()
1580 && !buf.masterBibInfo().empty()) {
1581 os << '\n' << "\\begin{btUnit}\n";
1582 runparams.openbtUnit = true;
1586 if (!layout.isEnvironment() && par->params().leftIndent().zero()) {
1587 // This is a standard top level paragraph, TeX it and continue.
1588 TeXOnePar(buf, text, pit, os, runparams, everypar);
1592 TeXEnvironmentData const data =
1593 prepareEnvironment(buf, text, par, os, runparams);
1594 // pit can be changed in TeXEnvironment.
1595 TeXEnvironment(buf, text, runparams, pit, os);
1596 finishEnvironment(os, runparams, data);
1599 // FIXME: uncomment the content or remove this block
1600 if (pit == runparams.par_end) {
1601 // Make sure that the last paragraph is
1602 // correctly terminated (because TeXOnePar does
1603 // not add a \n in this case)
1607 // It might be that we only have a title in this document
1608 if (was_title && !already_title) {
1609 if (tclass.titletype() == TITLE_ENVIRONMENT) {
1610 os << "\\end{" << from_ascii(tclass.titlename())
1613 os << "\\" << from_ascii(tclass.titlename())
1618 if (maintext && !is_child && runparams.openbtUnit)
1619 os << "\\end{btUnit}\n";
1621 // if "auto end" is switched off, explicitly close the language at the end
1622 // but only if the last par is in a babel or polyglossia language
1623 Language const * const lastpar_language =
1624 paragraphs.at(lastpit).getParLanguage(bparams);
1625 if (maintext && !lyxrc.language_auto_end && !mainlang.empty() &&
1626 lastpar_language->encoding()->package() != Encoding::CJK) {
1627 os << from_utf8(subst(lang_end_command,
1631 if (using_begin_end)
1635 // If the last paragraph is an environment, we'll have to close
1636 // CJK at the very end to do proper nesting.
1637 if (maintext && !is_child && state->open_encoding_ == CJK) {
1638 os << "\\clearpage\n\\end{CJK}\n";
1639 state->open_encoding_ = none;
1641 // Likewise for polyglossia or when using begin/end commands
1642 // or at the very end of an active branch inset with a language switch
1643 Language const * const outer_language = (runparams.local_font != nullptr)
1644 ? runparams.local_font->language() : bparams.language;
1645 string const & prev_lang = runparams.use_polyglossia
1646 ? getPolyglossiaEnvName(outer_language)
1647 : outer_language->babel();
1648 string const lastpar_lang = runparams.use_polyglossia ?
1649 getPolyglossiaEnvName(lastpar_language): lastpar_language->babel();
1650 string const & cur_lang = openLanguageName(state);
1651 if (((runparams.inbranch && langOpenedAtThisLevel(state) && prev_lang != cur_lang)
1652 || (maintext && !is_child)) && !cur_lang.empty()) {
1653 os << from_utf8(subst(lang_end_command,
1657 if (using_begin_end)
1659 } else if (runparams.inbranch && !using_begin_end
1660 && prev_lang != lastpar_lang && !lastpar_lang.empty()) {
1661 // with !using_begin_end, cur_lang is empty, so we need to
1662 // compare against the paragraph language (and we are in the
1663 // last paragraph at this point)
1664 os << subst(lang_begin_command, "$$lang", prev_lang) << '\n';
1667 // reset inherited encoding
1668 if (state->cjk_inherited_ > 0) {
1669 state->cjk_inherited_ -= 1;
1670 if (state->cjk_inherited_ == 0)
1671 state->open_encoding_ = CJK;
1674 if (multibib_child && mparams.useBibtopic()) {
1675 os << "\\end{btUnit}\n";
1676 runparams.openbtUnit = false;
1680 // Switch the input encoding for some part(s) of the document.
1681 pair<bool, int> switchEncoding(odocstream & os, BufferParams const & bparams,
1682 OutputParams const & runparams, Encoding const & newEnc,
1683 bool force, bool noswitchmacro)
1685 // Never switch encoding with XeTeX/LuaTeX
1686 // or if we're in a moving argument or inherit the outer encoding.
1687 if (runparams.isFullUnicode() || newEnc.name() == "inherit")
1688 return make_pair(false, 0);
1690 // Only switch for auto-selected legacy encodings (inputenc setting
1691 // "auto-legacy" or "auto-legacy-plain").
1692 // The "listings" environment can force a switch also with other
1693 // encoding settings (it does not support variable width encodings
1694 // (utf8, jis, ...) under 8-bit latex engines).
1695 if (!force && ((bparams.inputenc != "auto-legacy" && bparams.inputenc != "auto-legacy-plain")
1696 || runparams.moving_arg))
1697 return make_pair(false, 0);
1699 Encoding const & oldEnc = *runparams.encoding;
1700 // Do not switch, if the encoding is unchanged or switching is not supported.
1701 if (oldEnc.name() == newEnc.name()
1702 || oldEnc.package() == Encoding::japanese
1703 || oldEnc.package() == Encoding::none
1704 || newEnc.package() == Encoding::none
1705 || runparams.for_search)
1706 return make_pair(false, 0);
1707 // FIXME We ignore encoding switches from/to encodings that do
1708 // neither support the inputenc package nor the CJK package here.
1709 // This may fail for characters not supported by "unicodesymbols"
1710 // or for non-ASCII characters in "listings"
1711 // but it is the best we can do.
1714 LYXERR(Debug::LATEX, "Changing LaTeX encoding from "
1715 << oldEnc.name() << " to " << newEnc.name());
1716 os << setEncoding(newEnc.iconvName());
1717 if (bparams.inputenc == "auto-legacy-plain")
1718 return make_pair(true, 0);
1720 docstring const inputenc_arg(from_ascii(newEnc.latexName()));
1721 OutputState * state = getOutputState();
1722 switch (newEnc.package()) {
1723 case Encoding::none:
1724 case Encoding::japanese:
1725 // shouldn't ever reach here (see above) but avoids warning.
1726 return make_pair(true, 0);
1727 case Encoding::inputenc: {
1728 int count = inputenc_arg.length();
1729 if (oldEnc.package() == Encoding::CJK &&
1730 state->open_encoding_ == CJK) {
1732 state->open_encoding_ = none;
1735 else if (oldEnc.package() == Encoding::inputenc &&
1736 state->open_encoding_ == inputenc) {
1738 state->open_encoding_ = none;
1741 if (runparams.local_font != nullptr
1742 && oldEnc.package() == Encoding::CJK) {
1743 // within insets, \inputenc switches need
1744 // to be embraced within \bgroup...\egroup;
1748 state->open_encoding_ = inputenc;
1751 return make_pair(true, count);
1752 os << "\\inputencoding{" << inputenc_arg << '}';
1753 return make_pair(true, count + 16);
1755 case Encoding::CJK: {
1756 int count = inputenc_arg.length();
1757 if (oldEnc.package() == Encoding::CJK &&
1758 state->open_encoding_ == CJK) {
1762 if (oldEnc.package() == Encoding::inputenc &&
1763 state->open_encoding_ == inputenc) {
1767 os << "\\begin{CJK}{"
1768 << from_ascii(newEnc.latexName()) << "}{"
1769 << from_ascii(bparams.fonts_cjk) << "}";
1770 state->open_encoding_ = CJK;
1771 return make_pair(true, count + 15);
1774 // Dead code to avoid a warning:
1775 return make_pair(true, 0);