/** * \file output_latex.cpp * This file is part of LyX, the document processor. * Licence details can be found in the file COPYING. * * \author Lars Gullik Bjønnes * * Full author contact details are available in file CREDITS. */ #include #include "output_latex.h" #include "Buffer.h" #include "BufferParams.h" #include "Encoding.h" #include "InsetList.h" #include "Language.h" #include "Layout.h" #include "LyXRC.h" #include "OutputParams.h" #include "Paragraph.h" #include "paragraph_funcs.h" #include "ParagraphParameters.h" #include "TextClass.h" #include "TexRow.h" #include "VSpace.h" #include "insets/InsetBibitem.h" #include "insets/InsetOptArg.h" #include "support/lassert.h" #include "support/debug.h" #include "support/lstrings.h" #include using namespace std; using namespace lyx::support; namespace lyx { namespace { enum OpenEncoding { none, inputenc, CJK }; static int open_encoding_ = none; static int cjk_inherited_ = 0; ParagraphList::const_iterator TeXEnvironment(Buffer const & buf, Text const & text, ParagraphList::const_iterator pit, odocstream & os, TexRow & texrow, OutputParams const & runparams); ParagraphList::const_iterator TeXOnePar(Buffer const & buf, Text const & text, ParagraphList::const_iterator pit, odocstream & os, TexRow & texrow, OutputParams const & runparams, string const & everypar = string()); ParagraphList::const_iterator TeXDeeper(Buffer const & buf, Text const & text, ParagraphList::const_iterator pit, odocstream & os, TexRow & texrow, OutputParams const & runparams) { LYXERR(Debug::LATEX, "TeXDeeper... " << &*pit); ParagraphList::const_iterator par = pit; ParagraphList const & paragraphs = text.paragraphs(); while (par != paragraphs.end() && par->params().depth() == pit->params().depth()) { // FIXME This test should not be necessary. // We should perhaps issue an error if it is. Layout const & style = par->forcePlainLayout() ? buf.params().documentClass().plainLayout() : par->layout(); if (style.isEnvironment()) { par = TeXEnvironment(buf, text, par, os, texrow, runparams); } else { par = TeXOnePar(buf, text, par, os, texrow, runparams); } } LYXERR(Debug::LATEX, "TeXDeeper...done "); return par; } ParagraphList::const_iterator TeXEnvironment(Buffer const & buf, Text const & text, ParagraphList::const_iterator pit, odocstream & os, TexRow & texrow, OutputParams const & runparams) { LYXERR(Debug::LATEX, "TeXEnvironment... " << &*pit); BufferParams const & bparams = buf.params(); // FIXME This test should not be necessary. // We should perhaps issue an error if it is. Layout const & style = pit->forcePlainLayout() ? bparams.documentClass().plainLayout() : pit->layout(); ParagraphList const & paragraphs = text.paragraphs(); Language const * const par_language = pit->getParLanguage(bparams); Language const * const doc_language = bparams.language; Language const * const prev_par_language = (pit != paragraphs.begin()) ? boost::prior(pit)->getParLanguage(bparams) : doc_language; if (par_language->babel() != prev_par_language->babel()) { if (!lyxrc.language_command_end.empty() && prev_par_language->babel() != doc_language->babel() && !prev_par_language->babel().empty()) { os << from_ascii(subst( lyxrc.language_command_end, "$$lang", prev_par_language->babel())) // the '%' is necessary to prevent unwanted whitespace << "%\n"; texrow.newline(); } if ((lyxrc.language_command_end.empty() || par_language->babel() != doc_language->babel()) && !par_language->babel().empty()) { os << from_ascii(subst( lyxrc.language_command_begin, "$$lang", par_language->babel())) // the '%' is necessary to prevent unwanted whitespace << "%\n"; texrow.newline(); } } bool leftindent_open = false; if (!pit->params().leftIndent().zero()) { os << "\\begin{LyXParagraphLeftIndent}{" << from_ascii(pit->params().leftIndent().asLatexString()) << "}\n"; texrow.newline(); leftindent_open = true; } if (style.isEnvironment()) { os << "\\begin{" << from_ascii(style.latexname()) << '}'; if (style.optionalargs > 0) { int ret = latexOptArgInsets(*pit, os, runparams, style.optionalargs); while (ret > 0) { texrow.newline(); --ret; } } if (style.latextype == LATEX_LIST_ENVIRONMENT) { os << '{' << pit->params().labelWidthString() << "}\n"; } else if (style.labeltype == LABEL_BIBLIO) { // ale970405 os << '{' << bibitemWidest(buf) << "}\n"; } else os << from_ascii(style.latexparam()) << '\n'; texrow.newline(); } // in multilingual environments, the CJK tags have to be nested properly bool cjk_nested = false; if (par_language->encoding()->package() == Encoding::CJK && open_encoding_ != CJK && pit->isMultiLingual(bparams)) { if (prev_par_language->encoding()->package() == Encoding::CJK) os << "\\begin{CJK}{" << from_ascii(par_language->encoding()->latexName()) << "}{" << from_ascii(bparams.fontsCJK) << "}%\n"; open_encoding_ = CJK; cjk_nested = true; texrow.newline(); } ParagraphList::const_iterator par = pit; do { par = TeXOnePar(buf, text, par, os, texrow, runparams); if (par == paragraphs.end()) { // Make sure that the last paragraph is // correctly terminated (because TeXOnePar does // not add a \n in this case) os << '\n'; texrow.newline(); } else if (par->params().depth() > pit->params().depth()) { if (par->layout().isParagraph()) { // Thinko! // How to handle this? (Lgb) //&& !suffixIs(os, "\n\n") // There should be at least one '\n' already // but we need there to be two for Standard // paragraphs that are depth-increment'ed to be // output correctly. However, tables can // also be paragraphs so don't adjust them. // ARRae // Thinkee: // Will it ever harm to have one '\n' too // many? i.e. that we sometimes will have // three in a row. (Lgb) os << '\n'; texrow.newline(); } par = TeXDeeper(buf, text, par, os, texrow, runparams); } } while (par != paragraphs.end() && par->layout() == pit->layout() && par->params().depth() == pit->params().depth() && par->params().leftIndent() == pit->params().leftIndent()); if (open_encoding_ == CJK && cjk_nested) { // We need to close the encoding even if it does not change // to do correct environment nesting os << "\\end{CJK}\n"; texrow.newline(); open_encoding_ = none; } if (style.isEnvironment()) { os << "\\end{" << from_ascii(style.latexname()) << "}\n"; texrow.newline(); } if (leftindent_open) { os << "\\end{LyXParagraphLeftIndent}\n"; texrow.newline(); } if (par != paragraphs.end()) LYXERR(Debug::LATEX, "TeXEnvironment...done " << &*par); return par; } } // namespace anon int latexOptArgInsets(Paragraph const & par, odocstream & os, OutputParams const & runparams, int number) { int lines = 0; InsetList::const_iterator it = par.insetList().begin(); InsetList::const_iterator end = par.insetList().end(); for (; it != end && number > 0 ; ++it) { if (it->inset->lyxCode() == OPTARG_CODE) { InsetOptArg * ins = static_cast(it->inset); lines += ins->latexOptional(os, runparams); --number; } } return lines; } namespace { ParagraphList::const_iterator TeXOnePar(Buffer const & buf, Text const & text, ParagraphList::const_iterator const pit, odocstream & os, TexRow & texrow, OutputParams const & runparams_in, string const & everypar) { LYXERR(Debug::LATEX, "TeXOnePar... " << &*pit << " '" << everypar << "'"); BufferParams const & bparams = buf.params(); ParagraphList const & paragraphs = text.paragraphs(); ParagraphList::const_iterator const priorpit = pit == paragraphs.begin() ? pit : boost::prior(pit); ParagraphList::const_iterator const nextpit = pit == paragraphs.end() ? pit : boost::next(pit); OutputParams runparams = runparams_in; runparams.isLastPar = nextpit == paragraphs.end(); if (runparams.verbatim) { int const dist = distance(paragraphs.begin(), pit); Font const outerfont = outerFont(dist, paragraphs); // No newline if only one paragraph in this lyxtext if (dist > 0) { os << '\n'; texrow.newline(); } /*bool need_par = */ pit->latex(bparams, outerfont, os, texrow, runparams); return nextpit; } // FIXME This check should not really be needed. // Perhaps we should issue an error if it is. Layout const style = pit->forcePlainLayout() ? bparams.documentClass().plainLayout() : pit->layout(); runparams.moving_arg |= style.needprotect; bool const maintext = text.isMainText(buf); // we are at the beginning of an inset and CJK is already open; // we count inheritation levels to get the inset nesting right. if (pit == paragraphs.begin() && !maintext && (cjk_inherited_ > 0 || open_encoding_ == CJK)) { cjk_inherited_ += 1; open_encoding_ = none; } // This paragraph's language Language const * const par_language = pit->getParLanguage(bparams); // The document's language Language const * const doc_language = bparams.language; // The language that was in effect when the environment this paragraph is // inside of was opened Language const * const outer_language = (runparams.local_font != 0) ? runparams.local_font->language() : doc_language; // The previous language that was in effect is either the language of // the previous paragraph, if there is one, or else the outer language // if there is no previous paragraph Language const * prev_language = (pit != paragraphs.begin()) ? priorpit->getParLanguage(bparams) : outer_language; // When the language is changed at the very start of a LyX environment, // the language switch in the LaTeX code occurs just before switching to // the corresponding LaTeX environment. So, when the environment ends, // we have to restore the language that was in effect. bool env_lang_switch = false; if (!priorpit->hasSameLayout(*pit)) { ParagraphList::const_iterator outpit = priorpit; while (outpit != paragraphs.begin() && (outpit->hasSameLayout(*priorpit) || outpit->getDepth() > priorpit->getDepth())) outpit = boost::prior(outpit); ParagraphList::const_iterator const inpit = boost::next(outpit); Language const * const outenv_language = outpit->getParLanguage(bparams); Language const * const inenv_language = inpit->getParLanguage(bparams); if (outenv_language->babel() != inenv_language->babel()) env_lang_switch = true; if (outenv_language->babel() != par_language->babel()) prev_language = outenv_language; } if ((par_language->babel() != prev_language->babel() || env_lang_switch) // check if we already put language command in TeXEnvironment() && !(style.isEnvironment() && (pit == paragraphs.begin() || (priorpit->layout() != pit->layout() && priorpit->getDepth() <= pit->getDepth()) || priorpit->getDepth() < pit->getDepth()))) { if (!lyxrc.language_command_end.empty() && prev_language->babel() != outer_language->babel() && !prev_language->babel().empty()) { os << from_ascii(subst(lyxrc.language_command_end, "$$lang", prev_language->babel())) // the '%' is necessary to prevent unwanted whitespace << "%\n"; texrow.newline(); } // We need to open a new language if we couldn't close the previous // one (because there's no language_command_end); and even if we closed // the previous one, if the current language is different than the // outer_language (which is currently in effect once the previous one // is closed). if ((lyxrc.language_command_end.empty() || par_language->babel() != outer_language->babel()) && !par_language->babel().empty()) { // If we're inside an inset, and that inset is within an \L or \R // (or equivalents), then within the inset, too, any opposite // language paragraph should appear within an \L or \R (in addition // to, outside of, the normal language switch commands). // This behavior is not correct for ArabTeX, though. if ( // not for ArabTeX (par_language->lang() != "arabic_arabtex" && outer_language->lang() != "arabic_arabtex") && // are we in an inset? runparams.local_font != 0 && // is the inset within an \L or \R? // // FIXME: currently, we don't check this; this means that // we'll have unnnecessary \L and \R commands, but that // doesn't seem to hurt (though latex will complain) // // is this paragraph in the opposite direction? runparams.local_font->isRightToLeft() != par_language->rightToLeft() ) { // FIXME: I don't have a working copy of the Arabi package, so // I'm not sure if the farsi and arabic_arabi stuff is correct // or not... if (par_language->lang() == "farsi") os << "\\textFR{"; else if (outer_language->lang() == "farsi") os << "\\textLR{"; else if (par_language->lang() == "arabic_arabi") os << "\\textAR{"; else if (outer_language->lang() == "arabic_arabi") os << "\\textLR{"; // remaining RTL languages currently is hebrew else if (par_language->rightToLeft()) os << "\\R{"; else os << "\\L{"; } // With CJK, the CJK tag has to be closed first (see below) if (runparams.encoding->package() != Encoding::CJK) { os << from_ascii(subst( lyxrc.language_command_begin, "$$lang", par_language->babel())) // the '%' is necessary to prevent unwanted whitespace << "%\n"; texrow.newline(); } } } // Switch file encoding if necessary; no need to do this for "default" // encoding, since this only affects the position of the outputted // \inputencoding command; the encoding switch will occur when necessary if (bparams.inputenc == "auto" && runparams.encoding->package() != Encoding::none) { // Look ahead for future encoding changes. // We try to output them at the beginning of the paragraph, // since the \inputencoding command is not allowed e.g. in // sections. for (pos_type i = 0; i < pit->size(); ++i) { char_type const c = pit->getChar(i); Encoding const * const encoding = pit->getFontSettings(bparams, i).language()->encoding(); if (encoding->package() != Encoding::CJK && runparams.encoding->package() == Encoding::inputenc && c < 0x80) continue; if (pit->isInset(i)) break; // All characters before c are in the ASCII range, and // c is non-ASCII (but no inset), so change the // encoding to that required by the language of c. // With CJK, only add switch if we have CJK content at the beginning // of the paragraph if (encoding->package() != Encoding::CJK || i == 0) { pair enc_switch = switchEncoding(os, bparams, runparams, *encoding); // the following is necessary after a CJK environment in a multilingual // context (nesting issue). if (par_language->encoding()->package() == Encoding::CJK && open_encoding_ != CJK && cjk_inherited_ == 0) { os << "\\begin{CJK}{" << from_ascii(par_language->encoding()->latexName()) << "}{" << from_ascii(bparams.fontsCJK) << "}%\n"; open_encoding_ = CJK; texrow.newline(); } if (encoding->package() != Encoding::none && enc_switch.first) { if (enc_switch.second > 0) { // the '%' is necessary to prevent unwanted whitespace os << "%\n"; texrow.newline(); } // With CJK, the CJK tag had to be closed first (see above) if (runparams.encoding->package() == Encoding::CJK) { os << from_ascii(subst( lyxrc.language_command_begin, "$$lang", par_language->babel())) // the '%' is necessary to prevent unwanted whitespace << "%\n"; texrow.newline(); } runparams.encoding = encoding; } break; } } } bool const useSetSpace = bparams.documentClass().provides("SetSpace"); if (pit->allowParagraphCustomization()) { if (pit->params().startOfAppendix()) { os << "\\appendix\n"; texrow.newline(); } if (!pit->params().spacing().isDefault() && (pit == paragraphs.begin() || !priorpit->hasSameLayout(*pit))) { os << from_ascii(pit->params().spacing().writeEnvirBegin(useSetSpace)) << '\n'; texrow.newline(); } if (style.isCommand()) { os << '\n'; texrow.newline(); } } switch (style.latextype) { case LATEX_COMMAND: os << '\\' << from_ascii(style.latexname()); // Separate handling of optional argument inset. if (style.optionalargs > 0) { int ret = latexOptArgInsets(*pit, os, runparams, style.optionalargs); while (ret > 0) { texrow.newline(); --ret; } } else os << from_ascii(style.latexparam()); break; case LATEX_ITEM_ENVIRONMENT: case LATEX_LIST_ENVIRONMENT: os << "\\item "; break; case LATEX_BIB_ENVIRONMENT: // ignore this, the inset will write itself break; default: break; } Font const outerfont = outerFont(distance(paragraphs.begin(), pit), paragraphs); // FIXME UNICODE os << from_utf8(everypar); bool need_par = pit->latex(bparams, outerfont, os, texrow, runparams); // Make sure that \\par is done with the font of the last // character if this has another size as the default. // This is necessary because LaTeX (and LyX on the screen) // calculates the space between the baselines according // to this font. (Matthias) // // Is this really needed ? (Dekel) // We do not need to use to change the font for the last paragraph // or for a command. Font const font = pit->empty() ? pit->getLayoutFont(bparams, outerfont) : pit->getFont(bparams, pit->size() - 1, outerfont); bool const is_command = style.isCommand(); if (style.resfont.size() != font.fontInfo().size() && nextpit != paragraphs.end() && !is_command) { if (!need_par) os << '{'; os << "\\" << from_ascii(font.latexSize()) << " \\par}"; } else if (need_par) { os << "\\par}"; } else if (is_command) os << '}'; bool pending_newline = false; switch (style.latextype) { case LATEX_ITEM_ENVIRONMENT: case LATEX_LIST_ENVIRONMENT: if (nextpit != paragraphs.end() && (pit->params().depth() < nextpit->params().depth())) pending_newline = true; break; case LATEX_ENVIRONMENT: { // if its the last paragraph of the current environment // skip it otherwise fall through if (nextpit != paragraphs.end() && (nextpit->layout() != pit->layout() || nextpit->params().depth() != pit->params().depth())) break; } // fall through possible default: // we don't need it for the last paragraph!!! if (nextpit != paragraphs.end()) pending_newline = true; } if (pit->allowParagraphCustomization()) { if (!pit->params().spacing().isDefault() && (nextpit == paragraphs.end() || !nextpit->hasSameLayout(*pit))) { if (pending_newline) { os << '\n'; texrow.newline(); } os << from_ascii(pit->params().spacing().writeEnvirEnd(useSetSpace)); pending_newline = true; } } // Closing the language is needed for the last paragraph; it is also // needed if we're within an \L or \R that we may have opened above (not // necessarily in this paragraph) and are about to close. bool closing_rtl_ltr_environment = // not for ArabTeX (par_language->lang() != "arabic_arabtex" && outer_language->lang() != "arabic_arabtex") && // have we opened and \L or \R environment? runparams.local_font != 0 && runparams.local_font->isRightToLeft() != par_language->rightToLeft() && // are we about to close the language? ((nextpit != paragraphs.end() && par_language->babel() != (nextpit->getParLanguage(bparams))->babel()) || (nextpit == paragraphs.end() && par_language->babel() != outer_language->babel())); if (closing_rtl_ltr_environment || (nextpit == paragraphs.end() && par_language->babel() != outer_language->babel())) { // Since \selectlanguage write the language to the aux file, // we need to reset the language at the end of footnote or // float. if (pending_newline) { os << '\n'; texrow.newline(); } // when the paragraph uses CJK, the language has to be closed earlier if (font.language()->encoding()->package() != Encoding::CJK) { if (lyxrc.language_command_end.empty()) { if (!prev_language->babel().empty()) { os << from_ascii(subst( lyxrc.language_command_begin, "$$lang", prev_language->babel())); pending_newline = true; } } else if (!par_language->babel().empty()) { os << from_ascii(subst( lyxrc.language_command_end, "$$lang", par_language->babel())); pending_newline = true; } } } if (closing_rtl_ltr_environment) os << "}"; if (pending_newline) { os << '\n'; texrow.newline(); } // if this is a CJK-paragraph and the next isn't, close CJK // also if the next paragraph is a multilingual environment (because of nesting) if (nextpit != paragraphs.end() && open_encoding_ == CJK && (nextpit->getParLanguage(bparams)->encoding()->package() != Encoding::CJK || nextpit->layout().isEnvironment() && nextpit->isMultiLingual(bparams)) // inbetween environments, CJK has to be closed later (nesting!) && (!style.isEnvironment() || !nextpit->layout().isEnvironment())) { os << "\\end{CJK}\n"; open_encoding_ = none; } // If this is the last paragraph, close the CJK environment // if necessary. If it's an environment, we'll have to \end that first. if (nextpit == paragraphs.end() && !style.isEnvironment()) { switch (open_encoding_) { case CJK: { // do nothing at the end of child documents if (maintext && buf.masterBuffer() != &buf) break; // end of main text if (maintext) { os << '\n'; texrow.newline(); os << "\\end{CJK}\n"; texrow.newline(); // end of an inset } else os << "\\end{CJK}"; open_encoding_ = none; break; } case inputenc: { os << "\\egroup"; open_encoding_ = none; break; } case none: default: // do nothing break; } } // If this is the last paragraph, and a local_font was set upon entering // the inset, and we're using "auto" or "default" encoding, the encoding // should be set back to that local_font's encoding. if (nextpit == paragraphs.end() && runparams_in.local_font != 0 && runparams_in.encoding != runparams_in.local_font->language()->encoding() && (bparams.inputenc == "auto" || bparams.inputenc == "default")) { runparams_in.encoding = runparams_in.local_font->language()->encoding(); os << setEncoding(runparams_in.encoding->iconvName()); } // Otherwise, the current encoding should be set for the next paragraph. else runparams_in.encoding = runparams.encoding; // we don't need a newline for the last paragraph!!! // Note from JMarc: we will re-add a \n explicitly in // TeXEnvironment, because it is needed in this case if (nextpit != paragraphs.end()) { Layout const & next_layout = nextpit->layout(); if (style == next_layout // no blank lines before environments! || !next_layout.isEnvironment() // unless there's a depth change // FIXME What we really want to do here is put every \begin and \end // tag on a new line (which was not the case with nested environments). // But in the present state of play, we don't have access to the // information whether the current TeX row is empty or not. // For some ideas about how to fix this, see this thread: // http://www.mail-archive.com/lyx-devel@lists.lyx.org/msg145787.html || nextpit->params().depth() != pit->params().depth()) { os << '\n'; texrow.newline(); } } if (nextpit != paragraphs.end()) LYXERR(Debug::LATEX, "TeXOnePar...done " << &*nextpit); return nextpit; } } // anon namespace // LaTeX all paragraphs void latexParagraphs(Buffer const & buf, Text const & text, odocstream & os, TexRow & texrow, OutputParams const & runparams, string const & everypar) { bool was_title = false; bool already_title = false; BufferParams const & bparams = buf.params(); DocumentClass const & tclass = bparams.documentClass(); ParagraphList const & paragraphs = text.paragraphs(); ParagraphList::const_iterator par = paragraphs.begin(); ParagraphList::const_iterator endpar = paragraphs.end(); LASSERT(runparams.par_begin <= runparams.par_end, /**/); // if only part of the paragraphs will be outputed if (runparams.par_begin != runparams.par_end) { par = boost::next(paragraphs.begin(), runparams.par_begin); endpar = boost::next(paragraphs.begin(), runparams.par_end); // runparams will be passed to nested paragraphs, so // we have to reset the range parameters. const_cast(runparams).par_begin = 0; const_cast(runparams).par_end = 0; } bool const maintext = text.isMainText(buf); bool const is_child = buf.masterBuffer() != &buf; // Open a CJK environment at the beginning of the main buffer // if the document's language is a CJK language // (but not in child documents) if (maintext && !is_child && bparams.encoding().package() == Encoding::CJK) { os << "\\begin{CJK}{" << from_ascii(bparams.encoding().latexName()) << "}{" << from_ascii(bparams.fontsCJK) << "}%\n"; texrow.newline(); open_encoding_ = CJK; } // if "auto begin" is switched off, explicitely switch the // language on at start if (maintext && !lyxrc.language_auto_begin && !bparams.language->babel().empty()) { // FIXME UNICODE os << from_utf8(subst(lyxrc.language_command_begin, "$$lang", bparams.language->babel())) << '\n'; texrow.newline(); } ParagraphList::const_iterator lastpar; // if only_body while (par != endpar) { lastpar = par; // FIXME This check should not be needed. We should // perhaps issue an error if it is. Layout const & layout = par->forcePlainLayout() ? tclass.plainLayout() : par->layout(); if (layout.intitle) { if (already_title) { lyxerr << "Error in latexParagraphs: You" " should not mix title layouts" " with normal ones." << endl; } else if (!was_title) { was_title = true; if (tclass.titletype() == TITLE_ENVIRONMENT) { os << "\\begin{" << from_ascii(tclass.titlename()) << "}\n"; texrow.newline(); } } } else if (was_title && !already_title) { if (tclass.titletype() == TITLE_ENVIRONMENT) { os << "\\end{" << from_ascii(tclass.titlename()) << "}\n"; } else { os << "\\" << from_ascii(tclass.titlename()) << "\n"; } texrow.newline(); already_title = true; was_title = false; } if (layout.isEnvironment() || !par->params().leftIndent().zero()) { par = TeXEnvironment(buf, text, par, os, texrow, runparams); } else { par = TeXOnePar(buf, text, par, os, texrow, runparams, everypar); } if (distance(lastpar, par) >= distance(lastpar, endpar)) break; } // It might be that we only have a title in this document if (was_title && !already_title) { if (tclass.titletype() == TITLE_ENVIRONMENT) { os << "\\end{" << from_ascii(tclass.titlename()) << "}\n"; } else { os << "\\" << from_ascii(tclass.titlename()) << "\n"; } texrow.newline(); } // if "auto end" is switched off, explicitely close the language at the end // but only if the last par is in a babel language if (maintext && !lyxrc.language_auto_end && !bparams.language->babel().empty() && lastpar->getParLanguage(bparams)->encoding()->package() != Encoding::CJK) { os << from_utf8(subst(lyxrc.language_command_end, "$$lang", bparams.language->babel())) << '\n'; texrow.newline(); } // If the last paragraph is an environment, we'll have to close // CJK at the very end to do proper nesting. if (maintext && !is_child && open_encoding_ == CJK) { os << "\\end{CJK}\n"; texrow.newline(); open_encoding_ = none; } // reset inherited encoding if (cjk_inherited_ > 0) { cjk_inherited_ -= 1; if (cjk_inherited_ == 0) open_encoding_ = CJK; } } pair switchEncoding(odocstream & os, BufferParams const & bparams, OutputParams const & runparams, Encoding const & newEnc, bool force) { Encoding const & oldEnc = *runparams.encoding; bool moving_arg = runparams.moving_arg; if (!force && ((bparams.inputenc != "auto" && bparams.inputenc != "default") || moving_arg)) return make_pair(false, 0); // Do nothing if the encoding is unchanged. if (oldEnc.name() == newEnc.name()) return make_pair(false, 0); // FIXME We ignore encoding switches from/to encodings that do // neither support the inputenc package nor the CJK package here. // This does of course only work in special cases (e.g. switch from // tis620-0 to latin1, but the text in latin1 contains ASCII only), // but it is the best we can do if (oldEnc.package() == Encoding::none || newEnc.package() == Encoding::none) return make_pair(false, 0); LYXERR(Debug::LATEX, "Changing LaTeX encoding from " << oldEnc.name() << " to " << newEnc.name()); os << setEncoding(newEnc.iconvName()); if (bparams.inputenc == "default") return make_pair(true, 0); docstring const inputenc_arg(from_ascii(newEnc.latexName())); switch (newEnc.package()) { case Encoding::none: case Encoding::japanese: // shouldn't ever reach here, see above return make_pair(true, 0); case Encoding::inputenc: { int count = inputenc_arg.length(); if (oldEnc.package() == Encoding::CJK && open_encoding_ == CJK) { os << "\\end{CJK}"; open_encoding_ = none; count += 9; } else if (oldEnc.package() == Encoding::inputenc && open_encoding_ == inputenc) { os << "\\egroup"; open_encoding_ = none; count += 7; } if (runparams.local_font != 0 && oldEnc.package() == Encoding::CJK) { // within insets, \inputenc switches need // to be embraced within \bgroup...\egroup; // else CJK fails. os << "\\bgroup"; count += 7; open_encoding_ = inputenc; } // with the japanese option, inputenc is omitted. if (runparams.use_japanese) return make_pair(true, count); os << "\\inputencoding{" << inputenc_arg << '}'; return make_pair(true, count + 16); } case Encoding::CJK: { int count = inputenc_arg.length(); if (oldEnc.package() == Encoding::CJK && open_encoding_ == CJK) { os << "\\end{CJK}"; count += 9; } if (oldEnc.package() == Encoding::inputenc && open_encoding_ == inputenc) { os << "\\egroup"; count += 7; } os << "\\begin{CJK}{" << inputenc_arg << "}{" << from_ascii(bparams.fontsCJK) << "}"; open_encoding_ = CJK; return make_pair(true, count + 15); } } // Dead code to avoid a warning: return make_pair(true, 0); } } // namespace lyx