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"
18 #include "InsetList.h"
22 #include "OutputParams.h"
23 #include "Paragraph.h"
24 #include "paragraph_funcs.h"
25 #include "ParagraphParameters.h"
26 #include "TextClass.h"
30 #include "insets/InsetBibitem.h"
31 #include "insets/InsetOptArg.h"
33 #include "support/lassert.h"
34 #include "support/debug.h"
35 #include "support/lstrings.h"
37 #include <boost/next_prior.hpp>
40 using namespace lyx::support;
53 static int open_encoding_ = none;
54 static int cjk_inherited_ = 0;
57 ParagraphList::const_iterator
58 TeXEnvironment(Buffer const & buf,
60 ParagraphList::const_iterator pit,
61 odocstream & os, TexRow & texrow,
62 OutputParams const & runparams);
65 ParagraphList::const_iterator
66 TeXDeeper(Buffer const & buf,
68 ParagraphList::const_iterator pit,
69 odocstream & os, TexRow & texrow,
70 OutputParams const & runparams)
72 LYXERR(Debug::LATEX, "TeXDeeper... " << &*pit);
73 ParagraphList::const_iterator par = pit;
75 ParagraphList const & paragraphs = text.paragraphs();
77 while (par != paragraphs.end() &&
78 par->params().depth() == pit->params().depth()) {
79 // FIXME This test should not be necessary.
80 // We should perhaps issue an error if it is.
81 Layout const & style = par->forcePlainLayout() ?
82 buf.params().documentClass().plainLayout() : par->layout();
83 if (style.isEnvironment()) {
84 par = TeXEnvironment(buf, text, par,
85 os, texrow, runparams);
87 par = TeXOnePar(buf, text, par,
88 os, texrow, runparams);
91 LYXERR(Debug::LATEX, "TeXDeeper...done ");
97 ParagraphList::const_iterator
98 TeXEnvironment(Buffer const & buf,
100 ParagraphList::const_iterator pit,
101 odocstream & os, TexRow & texrow,
102 OutputParams const & runparams)
104 LYXERR(Debug::LATEX, "TeXEnvironment... " << &*pit);
106 BufferParams const & bparams = buf.params();
108 // FIXME This test should not be necessary.
109 // We should perhaps issue an error if it is.
110 Layout const & style = pit->forcePlainLayout() ?
111 bparams.documentClass().plainLayout() : pit->layout();
113 ParagraphList const & paragraphs = text.paragraphs();
115 Language const * const par_language = pit->getParLanguage(bparams);
116 Language const * const doc_language = bparams.language;
117 Language const * const prev_par_language =
118 (pit != paragraphs.begin())
119 ? boost::prior(pit)->getParLanguage(bparams)
121 if (par_language->babel() != prev_par_language->babel()) {
123 if (!lyxrc.language_command_end.empty() &&
124 prev_par_language->babel() != doc_language->babel() &&
125 !prev_par_language->babel().empty()) {
126 os << from_ascii(subst(
127 lyxrc.language_command_end,
129 prev_par_language->babel()))
130 // the '%' is necessary to prevent unwanted whitespace
135 if ((lyxrc.language_command_end.empty() ||
136 par_language->babel() != doc_language->babel()) &&
137 !par_language->babel().empty()) {
138 os << from_ascii(subst(
139 lyxrc.language_command_begin,
141 par_language->babel()))
142 // the '%' is necessary to prevent unwanted whitespace
148 bool leftindent_open = false;
149 if (!pit->params().leftIndent().zero()) {
150 os << "\\begin{LyXParagraphLeftIndent}{"
151 << from_ascii(pit->params().leftIndent().asLatexString())
154 leftindent_open = true;
157 if (style.isEnvironment()) {
158 os << "\\begin{" << from_ascii(style.latexname()) << '}';
159 if (style.optionalargs > 0) {
160 int ret = latexOptArgInsets(*pit, os, runparams,
167 if (style.latextype == LATEX_LIST_ENVIRONMENT) {
169 << pit->params().labelWidthString()
171 } else if (style.labeltype == LABEL_BIBLIO) {
172 if (pit->params().labelWidthString().empty())
173 os << '{' << bibitemWidest(buf) << "}\n";
176 << pit->params().labelWidthString()
179 os << from_ascii(style.latexparam()) << '\n';
183 // in multilingual environments, the CJK tags have to be nested properly
184 bool cjk_nested = false;
185 if (par_language->encoding()->package() == Encoding::CJK &&
186 open_encoding_ != CJK && pit->isMultiLingual(bparams)) {
187 if (prev_par_language->encoding()->package() == Encoding::CJK)
188 os << "\\begin{CJK}{" << from_ascii(par_language->encoding()->latexName())
189 << "}{" << from_ascii(bparams.fontsCJK) << "}%\n";
190 open_encoding_ = CJK;
195 ParagraphList::const_iterator par = pit;
197 par = TeXOnePar(buf, text, par, os, texrow, runparams);
199 if (par == paragraphs.end()) {
200 // Make sure that the last paragraph is
201 // correctly terminated (because TeXOnePar does
202 // not add a \n in this case)
205 } else if (par->params().depth() > pit->params().depth()) {
206 if (par->layout().isParagraph()) {
208 // How to handle this? (Lgb)
209 //&& !suffixIs(os, "\n\n")
211 // There should be at least one '\n' already
212 // but we need there to be two for Standard
213 // paragraphs that are depth-increment'ed to be
214 // output correctly. However, tables can
215 // also be paragraphs so don't adjust them.
218 // Will it ever harm to have one '\n' too
219 // many? i.e. that we sometimes will have
220 // three in a row. (Lgb)
224 par = TeXDeeper(buf, text, par, os, texrow,
227 } while (par != paragraphs.end()
228 && par->layout() == pit->layout()
229 && par->params().depth() == pit->params().depth()
230 && par->params().leftIndent() == pit->params().leftIndent());
232 if (open_encoding_ == CJK && cjk_nested) {
233 // We need to close the encoding even if it does not change
234 // to do correct environment nesting
235 os << "\\end{CJK}\n";
237 open_encoding_ = none;
240 if (style.isEnvironment()) {
241 os << "\\end{" << from_ascii(style.latexname()) << "}\n";
245 if (leftindent_open) {
246 os << "\\end{LyXParagraphLeftIndent}\n";
250 if (par != paragraphs.end())
251 LYXERR(Debug::LATEX, "TeXEnvironment...done " << &*par);
259 int latexOptArgInsets(Paragraph const & par, odocstream & os,
260 OutputParams const & runparams, int number)
264 InsetList::const_iterator it = par.insetList().begin();
265 InsetList::const_iterator end = par.insetList().end();
266 for (; it != end && number > 0 ; ++it) {
267 if (it->inset->lyxCode() == OPTARG_CODE) {
269 static_cast<InsetOptArg *>(it->inset);
270 lines += ins->latexOptional(os, runparams);
277 // FIXME: this should be anonymous
278 ParagraphList::const_iterator TeXOnePar(Buffer const & buf,
280 ParagraphList::const_iterator const pit,
281 odocstream & os, TexRow & texrow,
282 OutputParams const & runparams_in,
283 string const & everypar,
284 int start_pos, int end_pos)
286 LYXERR(Debug::LATEX, "TeXOnePar... " << &*pit << " '"
288 BufferParams const & bparams = buf.params();
289 ParagraphList const & paragraphs = text.paragraphs();
291 ParagraphList::const_iterator const priorpit =
292 pit == paragraphs.begin() ? pit : boost::prior(pit);
293 ParagraphList::const_iterator const nextpit =
294 pit == paragraphs.end() ? pit : boost::next(pit);
296 OutputParams runparams = runparams_in;
297 runparams.isLastPar = nextpit == paragraphs.end();
299 if (runparams.verbatim) {
300 int const dist = distance(paragraphs.begin(), pit);
301 Font const outerfont = outerFont(dist, paragraphs);
303 // No newline if only one paragraph in this lyxtext
309 /*bool need_par = */ pit->latex(bparams, outerfont,
310 os, texrow, runparams, start_pos, end_pos);
314 // FIXME This check should not really be needed.
315 // Perhaps we should issue an error if it is.
316 Layout const style = pit->forcePlainLayout() ?
317 bparams.documentClass().plainLayout() : pit->layout();
319 runparams.moving_arg |= style.needprotect;
321 bool const maintext = text.isMainText(buf);
322 // we are at the beginning of an inset and CJK is already open;
323 // we count inheritation levels to get the inset nesting right.
324 if (pit == paragraphs.begin() && !maintext
325 && (cjk_inherited_ > 0 || open_encoding_ == CJK)) {
327 open_encoding_ = none;
330 // This paragraph's language
331 Language const * const par_language = pit->getParLanguage(bparams);
332 // The document's language
333 Language const * const doc_language = bparams.language;
334 // The language that was in effect when the environment this paragraph is
335 // inside of was opened
336 Language const * const outer_language =
337 (runparams.local_font != 0) ?
338 runparams.local_font->language() : doc_language;
339 // The previous language that was in effect is either the language of
340 // the previous paragraph, if there is one, or else the outer language
341 // if there is no previous paragraph
342 Language const * const prev_language =
343 (pit != paragraphs.begin()) ?
344 priorpit->getParLanguage(bparams) : outer_language;
346 if (par_language->babel() != prev_language->babel()
347 // check if we already put language command in TeXEnvironment()
348 && !(style.isEnvironment()
349 && (pit == paragraphs.begin() ||
350 (priorpit->layout() != pit->layout() &&
351 priorpit->getDepth() <= pit->getDepth())
352 || priorpit->getDepth() < pit->getDepth())))
354 if (!lyxrc.language_command_end.empty() &&
355 prev_language->babel() != outer_language->babel() &&
356 !prev_language->babel().empty())
358 os << from_ascii(subst(lyxrc.language_command_end,
360 prev_language->babel()))
361 // the '%' is necessary to prevent unwanted whitespace
366 // We need to open a new language if we couldn't close the previous
367 // one (because there's no language_command_end); and even if we closed
368 // the previous one, if the current language is different than the
369 // outer_language (which is currently in effect once the previous one
371 if ((lyxrc.language_command_end.empty() ||
372 par_language->babel() != outer_language->babel()) &&
373 !par_language->babel().empty()) {
374 // If we're inside an inset, and that inset is within an \L or \R
375 // (or equivalents), then within the inset, too, any opposite
376 // language paragraph should appear within an \L or \R (in addition
377 // to, outside of, the normal language switch commands).
378 // This behavior is not correct for ArabTeX, though.
379 if ( // not for ArabTeX
380 (par_language->lang() != "arabic_arabtex" &&
381 outer_language->lang() != "arabic_arabtex") &&
382 // are we in an inset?
383 runparams.local_font != 0 &&
384 // is the inset within an \L or \R?
386 // FIXME: currently, we don't check this; this means that
387 // we'll have unnnecessary \L and \R commands, but that
388 // doesn't seem to hurt (though latex will complain)
390 // is this paragraph in the opposite direction?
391 runparams.local_font->isRightToLeft() !=
392 par_language->rightToLeft()
394 // FIXME: I don't have a working copy of the Arabi package, so
395 // I'm not sure if the farsi and arabic_arabi stuff is correct
397 if (par_language->lang() == "farsi")
399 else if (outer_language->lang() == "farsi")
401 else if (par_language->lang() == "arabic_arabi")
403 else if (outer_language->lang() == "arabic_arabi")
405 // remaining RTL languages currently is hebrew
406 else if (par_language->rightToLeft())
411 // With CJK, the CJK tag has to be closed first (see below)
412 if (runparams.encoding->package() != Encoding::CJK) {
413 os << from_ascii(subst(
414 lyxrc.language_command_begin,
416 par_language->babel()))
417 // the '%' is necessary to prevent unwanted whitespace
424 // Switch file encoding if necessary; no need to do this for "default"
425 // encoding, since this only affects the position of the outputted
426 // \inputencoding command; the encoding switch will occur when necessary
427 if (bparams.inputenc == "auto" &&
428 runparams.encoding->package() != Encoding::none) {
429 // Look ahead for future encoding changes.
430 // We try to output them at the beginning of the paragraph,
431 // since the \inputencoding command is not allowed e.g. in
433 for (pos_type i = 0; i < pit->size(); ++i) {
434 char_type const c = pit->getChar(i);
435 Encoding const * const encoding =
436 pit->getFontSettings(bparams, i).language()->encoding();
437 if (encoding->package() != Encoding::CJK &&
438 runparams.encoding->package() == Encoding::inputenc &&
443 // All characters before c are in the ASCII range, and
444 // c is non-ASCII (but no inset), so change the
445 // encoding to that required by the language of c.
446 // With CJK, only add switch if we have CJK content at the beginning
448 if (encoding->package() != Encoding::CJK || i == 0) {
449 pair<bool, int> enc_switch = switchEncoding(os, bparams, runparams,
451 // the following is necessary after a CJK environment in a multilingual
452 // context (nesting issue).
453 if (par_language->encoding()->package() == Encoding::CJK &&
454 open_encoding_ != CJK && cjk_inherited_ == 0) {
455 os << "\\begin{CJK}{" << from_ascii(par_language->encoding()->latexName())
456 << "}{" << from_ascii(bparams.fontsCJK) << "}%\n";
457 open_encoding_ = CJK;
460 if (encoding->package() != Encoding::none && enc_switch.first) {
461 if (enc_switch.second > 0) {
462 // the '%' is necessary to prevent unwanted whitespace
466 // With CJK, the CJK tag had to be closed first (see above)
467 if (runparams.encoding->package() == Encoding::CJK) {
468 os << from_ascii(subst(
469 lyxrc.language_command_begin,
471 par_language->babel()))
472 // the '%' is necessary to prevent unwanted whitespace
476 runparams.encoding = encoding;
483 bool const useSetSpace = bparams.documentClass().provides("SetSpace");
484 if (pit->allowParagraphCustomization()) {
485 if (pit->params().startOfAppendix()) {
486 os << "\\appendix\n";
490 if (!pit->params().spacing().isDefault()
491 && (pit == paragraphs.begin()
492 || !priorpit->hasSameLayout(*pit)))
494 os << from_ascii(pit->params().spacing().writeEnvirBegin(useSetSpace))
499 if (style.isCommand()) {
505 switch (style.latextype) {
507 os << '\\' << from_ascii(style.latexname());
509 // Separate handling of optional argument inset.
510 if (style.optionalargs > 0) {
511 int ret = latexOptArgInsets(*pit, os, runparams,
519 os << from_ascii(style.latexparam());
521 case LATEX_ITEM_ENVIRONMENT:
522 case LATEX_LIST_ENVIRONMENT:
525 case LATEX_BIB_ENVIRONMENT:
526 // ignore this, the inset will write itself
532 Font const outerfont = outerFont(distance(paragraphs.begin(), pit),
536 os << from_utf8(everypar);
537 bool need_par = pit->latex(bparams, outerfont,
538 os, texrow, runparams, start_pos, end_pos);
540 // Make sure that \\par is done with the font of the last
541 // character if this has another size as the default.
542 // This is necessary because LaTeX (and LyX on the screen)
543 // calculates the space between the baselines according
544 // to this font. (Matthias)
546 // Is this really needed ? (Dekel)
547 // We do not need to use to change the font for the last paragraph
550 Font const font = pit->empty()
551 ? pit->getLayoutFont(bparams, outerfont)
552 : pit->getFont(bparams, pit->size() - 1, outerfont);
554 bool const is_command = style.isCommand();
556 if (style.resfont.size() != font.fontInfo().size()
557 && nextpit != paragraphs.end()
561 os << "\\" << from_ascii(font.latexSize()) << " \\par}";
562 } else if (need_par) {
564 } else if (is_command)
567 bool pending_newline = false;
568 switch (style.latextype) {
569 case LATEX_ITEM_ENVIRONMENT:
570 case LATEX_LIST_ENVIRONMENT:
571 if (nextpit != paragraphs.end()
572 && (pit->params().depth() < nextpit->params().depth()))
573 pending_newline = true;
575 case LATEX_ENVIRONMENT: {
576 // if its the last paragraph of the current environment
577 // skip it otherwise fall through
578 if (nextpit != paragraphs.end() &&
579 (nextpit->layout() != pit->layout()
580 || nextpit->params().depth() != pit->params().depth()))
584 // fall through possible
586 // we don't need it for the last paragraph!!!
587 if (nextpit != paragraphs.end())
588 pending_newline = true;
591 if (pit->allowParagraphCustomization()) {
592 if (!pit->params().spacing().isDefault()
593 && (nextpit == paragraphs.end() || !nextpit->hasSameLayout(*pit)))
595 if (pending_newline) {
599 os << from_ascii(pit->params().spacing().writeEnvirEnd(useSetSpace));
600 pending_newline = true;
604 // Closing the language is needed for the last paragraph; it is also
605 // needed if we're within an \L or \R that we may have opened above (not
606 // necessarily in this paragraph) and are about to close.
607 bool closing_rtl_ltr_environment =
609 (par_language->lang() != "arabic_arabtex" &&
610 outer_language->lang() != "arabic_arabtex") &&
611 // have we opened and \L or \R environment?
612 runparams.local_font != 0 &&
613 runparams.local_font->isRightToLeft() != par_language->rightToLeft() &&
614 // are we about to close the language?
615 ((nextpit != paragraphs.end() &&
616 par_language->babel() !=
617 (nextpit->getParLanguage(bparams))->babel()) ||
618 (nextpit == paragraphs.end() &&
619 par_language->babel() != outer_language->babel()));
621 if (closing_rtl_ltr_environment || (nextpit == paragraphs.end()
622 && par_language->babel() != outer_language->babel())) {
623 // Since \selectlanguage write the language to the aux file,
624 // we need to reset the language at the end of footnote or
627 if (pending_newline) {
631 // when the paragraph uses CJK, the language has to be closed earlier
632 if (font.language()->encoding()->package() != Encoding::CJK) {
633 if (lyxrc.language_command_end.empty()) {
634 if (!prev_language->babel().empty()) {
635 os << from_ascii(subst(
636 lyxrc.language_command_begin,
638 prev_language->babel()));
639 pending_newline = true;
641 } else if (!par_language->babel().empty()) {
642 os << from_ascii(subst(
643 lyxrc.language_command_end,
645 par_language->babel()));
646 pending_newline = true;
650 if (closing_rtl_ltr_environment)
653 if (pending_newline) {
658 // if this is a CJK-paragraph and the next isn't, close CJK
659 // also if the next paragraph is a multilingual environment (because of nesting)
660 if (nextpit != paragraphs.end() && open_encoding_ == CJK &&
661 (nextpit->getParLanguage(bparams)->encoding()->package() != Encoding::CJK ||
662 (nextpit->layout().isEnvironment() && nextpit->isMultiLingual(bparams)))
663 // inbetween environments, CJK has to be closed later (nesting!)
664 && (!style.isEnvironment() || !nextpit->layout().isEnvironment())) {
665 os << "\\end{CJK}\n";
666 open_encoding_ = none;
669 // If this is the last paragraph, close the CJK environment
670 // if necessary. If it's an environment, we'll have to \end that first.
671 if (nextpit == paragraphs.end() && !style.isEnvironment()) {
672 switch (open_encoding_) {
674 // do nothing at the end of child documents
675 if (maintext && buf.masterBuffer() != &buf)
681 os << "\\end{CJK}\n";
686 open_encoding_ = none;
691 open_encoding_ = none;
701 // If this is the last paragraph, and a local_font was set upon entering
702 // the inset, and we're using "auto" or "default" encoding, the encoding
703 // should be set back to that local_font's encoding.
704 // However, do not change the encoding when XeTeX is used.
705 if (nextpit == paragraphs.end() && runparams_in.local_font != 0
706 && runparams_in.encoding != runparams_in.local_font->language()->encoding()
707 && (bparams.inputenc == "auto" || bparams.inputenc == "default")
708 && (!bparams.useXetex)) {
709 runparams_in.encoding = runparams_in.local_font->language()->encoding();
710 os << setEncoding(runparams_in.encoding->iconvName());
712 // Otherwise, the current encoding should be set for the next paragraph.
714 runparams_in.encoding = runparams.encoding;
717 // we don't need a newline for the last paragraph!!!
718 // Note from JMarc: we will re-add a \n explicitly in
719 // TeXEnvironment, because it is needed in this case
720 if (nextpit != paragraphs.end()) {
721 Layout const & next_layout = nextpit->layout();
722 if (style == next_layout
723 // no blank lines before environments!
724 || !next_layout.isEnvironment()
725 // unless there's a depth change
726 // FIXME What we really want to do here is put every \begin and \end
727 // tag on a new line (which was not the case with nested environments).
728 // But in the present state of play, we don't have access to the
729 // information whether the current TeX row is empty or not.
730 // For some ideas about how to fix this, see this thread:
731 // http://www.mail-archive.com/lyx-devel@lists.lyx.org/msg145787.html
732 || nextpit->params().depth() != pit->params().depth()) {
738 if (nextpit != paragraphs.end())
739 LYXERR(Debug::LATEX, "TeXOnePar...done " << &*nextpit);
745 // LaTeX all paragraphs
746 void latexParagraphs(Buffer const & buf,
750 OutputParams const & runparams,
751 string const & everypar)
753 bool was_title = false;
754 bool already_title = false;
755 BufferParams const & bparams = buf.params();
756 DocumentClass const & tclass = bparams.documentClass();
757 ParagraphList const & paragraphs = text.paragraphs();
758 ParagraphList::const_iterator par = paragraphs.begin();
759 ParagraphList::const_iterator endpar = paragraphs.end();
761 LASSERT(runparams.par_begin <= runparams.par_end, /**/);
762 // if only part of the paragraphs will be outputed
763 if (runparams.par_begin != runparams.par_end) {
764 par = boost::next(paragraphs.begin(), runparams.par_begin);
765 endpar = boost::next(paragraphs.begin(), runparams.par_end);
766 // runparams will be passed to nested paragraphs, so
767 // we have to reset the range parameters.
768 const_cast<OutputParams&>(runparams).par_begin = 0;
769 const_cast<OutputParams&>(runparams).par_end = 0;
772 bool const maintext = text.isMainText(buf);
773 bool const is_child = buf.masterBuffer() != &buf;
775 // Open a CJK environment at the beginning of the main buffer
776 // if the document's language is a CJK language
777 // (but not in child documents)
778 if (maintext && !is_child
779 && bparams.encoding().package() == Encoding::CJK) {
780 os << "\\begin{CJK}{" << from_ascii(bparams.encoding().latexName())
781 << "}{" << from_ascii(bparams.fontsCJK) << "}%\n";
783 open_encoding_ = CJK;
785 // if "auto begin" is switched off, explicitely switch the
786 // language on at start
787 if (maintext && !lyxrc.language_auto_begin &&
788 !bparams.language->babel().empty()) {
790 os << from_utf8(subst(lyxrc.language_command_begin,
792 bparams.language->babel()))
797 ParagraphList::const_iterator lastpar;
799 while (par != endpar) {
801 // FIXME This check should not be needed. We should
802 // perhaps issue an error if it is.
803 Layout const & layout = par->forcePlainLayout() ?
804 tclass.plainLayout() : par->layout();
806 if (layout.intitle) {
808 lyxerr << "Error in latexParagraphs: You"
809 " should not mix title layouts"
810 " with normal ones." << endl;
811 } else if (!was_title) {
813 if (tclass.titletype() == TITLE_ENVIRONMENT) {
815 << from_ascii(tclass.titlename())
820 } else if (was_title && !already_title) {
821 if (tclass.titletype() == TITLE_ENVIRONMENT) {
822 os << "\\end{" << from_ascii(tclass.titlename())
826 os << "\\" << from_ascii(tclass.titlename())
830 already_title = true;
834 if (layout.isEnvironment() ||
835 !par->params().leftIndent().zero()) {
836 par = TeXEnvironment(buf, text, par, os,
839 par = TeXOnePar(buf, text, par, os, texrow,
840 runparams, everypar);
842 if (distance(lastpar, par) >= distance(lastpar, endpar))
846 // It might be that we only have a title in this document
847 if (was_title && !already_title) {
848 if (tclass.titletype() == TITLE_ENVIRONMENT) {
849 os << "\\end{" << from_ascii(tclass.titlename())
853 os << "\\" << from_ascii(tclass.titlename())
859 // if "auto end" is switched off, explicitely close the language at the end
860 // but only if the last par is in a babel language
861 if (maintext && !lyxrc.language_auto_end && !bparams.language->babel().empty() &&
862 lastpar->getParLanguage(bparams)->encoding()->package() != Encoding::CJK) {
863 os << from_utf8(subst(lyxrc.language_command_end,
865 bparams.language->babel()))
870 // If the last paragraph is an environment, we'll have to close
871 // CJK at the very end to do proper nesting.
872 if (maintext && !is_child && open_encoding_ == CJK) {
873 os << "\\end{CJK}\n";
875 open_encoding_ = none;
878 // reset inherited encoding
879 if (cjk_inherited_ > 0) {
881 if (cjk_inherited_ == 0)
882 open_encoding_ = CJK;
887 pair<bool, int> switchEncoding(odocstream & os, BufferParams const & bparams,
888 OutputParams const & runparams, Encoding const & newEnc,
891 Encoding const & oldEnc = *runparams.encoding;
892 bool moving_arg = runparams.moving_arg;
893 if (!force && ((bparams.inputenc != "auto" && bparams.inputenc != "default")
895 return make_pair(false, 0);
897 // Do nothing if the encoding is unchanged.
898 if (oldEnc.name() == newEnc.name())
899 return make_pair(false, 0);
901 // FIXME We ignore encoding switches from/to encodings that do
902 // neither support the inputenc package nor the CJK package here.
903 // This does of course only work in special cases (e.g. switch from
904 // tis620-0 to latin1, but the text in latin1 contains ASCII only),
905 // but it is the best we can do
906 if (oldEnc.package() == Encoding::none
907 || newEnc.package() == Encoding::none)
908 return make_pair(false, 0);
910 LYXERR(Debug::LATEX, "Changing LaTeX encoding from "
911 << oldEnc.name() << " to " << newEnc.name());
912 os << setEncoding(newEnc.iconvName());
913 if (bparams.inputenc == "default")
914 return make_pair(true, 0);
916 docstring const inputenc_arg(from_ascii(newEnc.latexName()));
917 switch (newEnc.package()) {
919 case Encoding::japanese:
920 // shouldn't ever reach here, see above
921 return make_pair(true, 0);
922 case Encoding::inputenc: {
923 int count = inputenc_arg.length();
924 if (oldEnc.package() == Encoding::CJK &&
925 open_encoding_ == CJK) {
927 open_encoding_ = none;
930 else if (oldEnc.package() == Encoding::inputenc &&
931 open_encoding_ == inputenc) {
933 open_encoding_ = none;
936 if (runparams.local_font != 0
937 && oldEnc.package() == Encoding::CJK) {
938 // within insets, \inputenc switches need
939 // to be embraced within \bgroup...\egroup;
943 open_encoding_ = inputenc;
945 // with the japanese option, inputenc is omitted.
946 if (runparams.use_japanese)
947 return make_pair(true, count);
948 os << "\\inputencoding{" << inputenc_arg << '}';
949 return make_pair(true, count + 16);
951 case Encoding::CJK: {
952 int count = inputenc_arg.length();
953 if (oldEnc.package() == Encoding::CJK &&
954 open_encoding_ == CJK) {
958 if (oldEnc.package() == Encoding::inputenc &&
959 open_encoding_ == inputenc) {
963 os << "\\begin{CJK}{" << inputenc_arg << "}{"
964 << from_ascii(bparams.fontsCJK) << "}";
965 open_encoding_ = CJK;
966 return make_pair(true, count + 15);
969 // Dead code to avoid a warning:
970 return make_pair(true, 0);