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lyx_mirror/src/output_latex.cpp
Jürgen Spitzmüller 737e9b2c20 start XeTeX support. 
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@29119 a592a061-630c-0410-9148-cb99ea01b6c8
2009-04-06 06:58:30 +00:00

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/**
* \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 <config.h>
#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 <boost/next_prior.hpp>
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
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<InsetOptArg *>(it->inset);
lines += ins->latexOptional(os, runparams);
--number;
}
}
return lines;
}
// FIXME: this should be anonymous
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,
int start_pos, int end_pos)
{
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, start_pos, end_pos);
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 * const prev_language =
(pit != paragraphs.begin()) ?
priorpit->getParLanguage(bparams) : outer_language;
if (par_language->babel() != prev_language->babel()
// 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<bool, int> 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, start_pos, end_pos);
// 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.
// However, do not change the encoding when XeTeX is used.
if (nextpit == paragraphs.end() && runparams_in.local_font != 0
&& runparams_in.encoding != runparams_in.local_font->language()->encoding()
&& (bparams.inputenc == "auto" || bparams.inputenc == "default")
&& (!bparams.useXetex)) {
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;
}
// 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<OutputParams&>(runparams).par_begin = 0;
const_cast<OutputParams&>(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<bool, int> 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
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