anne/lyx_mirror
1
0
Fork 0
mirror of https://git.lyx.org/repos/lyx.git synced 2024-09-20 06:49:56 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Make LaTeX export threadsafe.

Browse Source 
This is one of the more important threadsafety issues because of export in
thread and simultanous view source. The solution is ugly, but a better one
(see FIXME) would require major rework. These static variables should not
have been used in the first place IMHO.
This commit is contained in:
Georg Baum 2014-07-07 22:14:28 +02:00
parent 2fe650f77f
commit 29f6aebb3e
1 changed files with 64 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

102
src/output_latex.cpp
View File

@ -35,6 +35,8 @@
#include "support/lstrings.h"
#include "support/textutils.h"
#include <QThreadStorage>
#include <algorithm>
#include <boost/next_prior.hpp>
#include <list>
@ -53,9 +55,28 @@ enum OpenEncoding {
CJK
};
static int open_encoding_ = none;
static int cjk_inherited_ = 0;
Language const * prev_env_language_ = 0;
struct OutputState
{
OutputState() : open_encoding_(none), cjk_inherited_(0),
prev_env_language_(0)
{
}
int open_encoding_;
int cjk_inherited_;
Language const * prev_env_language_;
};
OutputState * getOutputState()
{
// FIXME An instance of OutputState should be kept around for each export
// instead of using local thread storage
static QThreadStorage<OutputState *> outputstate;
if (!outputstate.hasLocalData())
outputstate.setLocalData(new OutputState);
return outputstate.localData();
}
string const getPolyglossiaEnvName(Language const * lang)
@ -97,7 +118,8 @@ static TeXEnvironmentData prepareEnvironment(Buffer const & buf,
ParagraphList::const_iterator const priorpit =
pit == paragraphs.begin() ? pit : boost::prior(pit);
bool const use_prev_env_language = prev_env_language_ != 0
OutputState * state = getOutputState();
bool const use_prev_env_language = state->prev_env_language_ != 0
&& priorpit->layout().isEnvironment()
&& (priorpit->getDepth() > pit->getDepth()
|| (priorpit->getDepth() == pit->getDepth()
@ -108,7 +130,7 @@ static TeXEnvironmentData prepareEnvironment(Buffer const & buf,
Language const * const doc_language = bparams.language;
Language const * const prev_par_language =
(pit != paragraphs.begin())
? (use_prev_env_language ? prev_env_language_
? (use_prev_env_language ? state->prev_env_language_
: priorpit->getParLanguage(bparams))
: doc_language;
@ -187,11 +209,11 @@ static TeXEnvironmentData prepareEnvironment(Buffer const & buf,
// in multilingual environments, the CJK tags have to be nested properly
data.cjk_nested = false;
if (data.par_language->encoding()->package() == Encoding::CJK &&
open_encoding_ != CJK && pit->isMultiLingual(bparams)) {
state->open_encoding_ != CJK && pit->isMultiLingual(bparams)) {
if (prev_par_language->encoding()->package() == Encoding::CJK)
os << "\\begin{CJK}{" << from_ascii(data.par_language->encoding()->latexName())
<< "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
open_encoding_ = CJK;
state->open_encoding_ = CJK;
data.cjk_nested = true;
}
return data;
@ -201,16 +223,17 @@ static TeXEnvironmentData prepareEnvironment(Buffer const & buf,
static void finishEnvironment(otexstream & os, OutputParams const & runparams,
TeXEnvironmentData const & data)
{
if (open_encoding_ == CJK && data.cjk_nested) {
OutputState * state = getOutputState();
if (state->open_encoding_ == CJK && data.cjk_nested) {
// We need to close the encoding even if it does not change
// to do correct environment nesting
os << "\\end{CJK}\n";
open_encoding_ = none;
state->open_encoding_ = none;
}
if (data.style->isEnvironment()) {
os << "\\end{" << from_ascii(data.style->latexname()) << "}\n";
prev_env_language_ = data.par_language;
state->prev_env_language_ = data.par_language;
if (runparams.encoding != data.prev_encoding) {
runparams.encoding = data.prev_encoding;
if (!runparams.isFullUnicode())
@ -220,7 +243,7 @@ static void finishEnvironment(otexstream & os, OutputParams const & runparams,
if (data.leftindent_open) {
os << "\\end{LyXParagraphLeftIndent}\n";
prev_env_language_ = data.par_language;
state->prev_env_language_ = data.par_language;
if (runparams.encoding != data.prev_encoding) {
runparams.encoding = data.prev_encoding;
if (!runparams.isFullUnicode())
@ -565,10 +588,11 @@ void TeXOnePar(Buffer const & buf,
bool const maintext = text.isMainText();
// we are at the beginning of an inset and CJK is already open;
// we count inheritation levels to get the inset nesting right.
OutputState * state = getOutputState();
if (pit == 0 && !maintext
&& (cjk_inherited_ > 0 || open_encoding_ == CJK)) {
cjk_inherited_ += 1;
open_encoding_ = none;
&& (state->cjk_inherited_ > 0 || state->open_encoding_ == CJK)) {
state->cjk_inherited_ += 1;
state->open_encoding_ = none;
}
if (text.inset().isPassThru()) {
@ -631,7 +655,7 @@ void TeXOnePar(Buffer const & buf,
// environment with nesting depth greater than (or equal to, but with
// a different layout) the current one. If there is no previous
// paragraph, the previous language is the outer language.
bool const use_prev_env_language = prev_env_language_ != 0
bool const use_prev_env_language = state->prev_env_language_ != 0
&& priorpar
&& priorpar->layout().isEnvironment()
&& (priorpar->getDepth() > par.getDepth()
@ -639,7 +663,7 @@ void TeXOnePar(Buffer const & buf,
&& priorpar->layout() != par.layout()));
Language const * const prev_language =
(pit != 0)
? (use_prev_env_language ? prev_env_language_
? (use_prev_env_language ? state->prev_env_language_
: priorpar->getParLanguage(bparams))
: outer_language;
@ -780,10 +804,10 @@ void TeXOnePar(Buffer const & buf,
// 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) {
&& state->open_encoding_ != CJK && state->cjk_inherited_ == 0) {
os << "\\begin{CJK}{" << from_ascii(par_language->encoding()->latexName())
<< "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
open_encoding_ = CJK;
state->open_encoding_ = CJK;
}
if (encoding->package() != Encoding::none && enc_switch.first) {
if (enc_switch.second > 0) {
@ -967,19 +991,19 @@ void TeXOnePar(Buffer const & buf,
// 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 (nextpar
&& open_encoding_ == CJK
&& state->open_encoding_ == CJK
&& (nextpar->getParLanguage(bparams)->encoding()->package() != Encoding::CJK
|| (nextpar->layout().isEnvironment() && nextpar->isMultiLingual(bparams)))
// inbetween environments, CJK has to be closed later (nesting!)
&& (!style.isEnvironment() || !nextpar->layout().isEnvironment())) {
os << "\\end{CJK}\n";
open_encoding_ = none;
state->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 (runparams.isLastPar && !style.isEnvironment()) {
switch (open_encoding_) {
switch (state->open_encoding_) {
case CJK: {
// do nothing at the end of child documents
if (maintext && buf.masterBuffer() != &buf)
@ -990,12 +1014,12 @@ void TeXOnePar(Buffer const & buf,
// end of an inset
} else
os << "\\end{CJK}";
open_encoding_ = none;
state->open_encoding_ = none;
break;
}
case inputenc: {
os << "\\egroup";
open_encoding_ = none;
state->open_encoding_ = none;
break;
}
case none:
@ -1067,11 +1091,12 @@ void latexParagraphs(Buffer const & 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)
OutputState * state = getOutputState();
if (maintext && !is_child
&& bparams.encoding().package() == Encoding::CJK) {
os << "\\begin{CJK}{" << from_ascii(bparams.encoding().latexName())
<< "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
open_encoding_ = CJK;
state->open_encoding_ = CJK;
}
// if "auto begin" is switched off, explicitly switch the
// language on at start
@ -1193,16 +1218,16 @@ void latexParagraphs(Buffer const & buf,
// 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) {
if (maintext && !is_child && state->open_encoding_ == CJK) {
os << "\\end{CJK}\n";
open_encoding_ = none;
state->open_encoding_ = none;
}
// reset inherited encoding
if (cjk_inherited_ > 0) {
cjk_inherited_ -= 1;
if (cjk_inherited_ == 0)
open_encoding_ = CJK;
if (state->cjk_inherited_ > 0) {
state->cjk_inherited_ -= 1;
if (state->cjk_inherited_ == 0)
state->open_encoding_ = CJK;
}
}
@ -1241,6 +1266,7 @@ pair<bool, int> switchEncoding(odocstream & os, BufferParams const & bparams,
return make_pair(true, 0);
docstring const inputenc_arg(from_ascii(newEnc.latexName()));
OutputState * state = getOutputState();
switch (newEnc.package()) {
case Encoding::none:
case Encoding::japanese:
@ -1249,15 +1275,15 @@ pair<bool, int> switchEncoding(odocstream & os, BufferParams const & bparams,
case Encoding::inputenc: {
int count = inputenc_arg.length();
if (oldEnc.package() == Encoding::CJK &&
open_encoding_ == CJK) {
state->open_encoding_ == CJK) {
os << "\\end{CJK}";
open_encoding_ = none;
state->open_encoding_ = none;
count += 9;
}
else if (oldEnc.package() == Encoding::inputenc &&
open_encoding_ == inputenc) {
state->open_encoding_ == inputenc) {
os << "\\egroup";
open_encoding_ = none;
state->open_encoding_ = none;
count += 7;
}
if (runparams.local_font != 0
@ -1267,7 +1293,7 @@ pair<bool, int> switchEncoding(odocstream & os, BufferParams const & bparams,
// else CJK fails.
os << "\\bgroup";
count += 7;
open_encoding_ = inputenc;
state->open_encoding_ = inputenc;
}
// with the japanese option, inputenc is omitted.
if (runparams.use_japanese)
@ -1278,18 +1304,18 @@ pair<bool, int> switchEncoding(odocstream & os, BufferParams const & bparams,
case Encoding::CJK: {
int count = inputenc_arg.length();
if (oldEnc.package() == Encoding::CJK &&
open_encoding_ == CJK) {
state->open_encoding_ == CJK) {
os << "\\end{CJK}";
count += 9;
}
if (oldEnc.package() == Encoding::inputenc &&
open_encoding_ == inputenc) {
state->open_encoding_ == inputenc) {
os << "\\egroup";
count += 7;
}
os << "\\begin{CJK}{" << inputenc_arg << "}{"
<< from_ascii(bparams.fonts_cjk) << "}";
open_encoding_ = CJK;
state->open_encoding_ = CJK;
return make_pair(true, count + 15);
}
}