/*!
\threadsafe
Returns the QTextCodec which matches the
\l{QTextCodec::mibEnum()}{MIBenum} \a mib.
*/
QTextCodec* QTextCodec::codecForMib(int mib)
{
QMutexLocker locker(textCodecsMutex());
QCoreGlobalData *globalData = QCoreGlobalData::instance();
if (!globalData)
return 0;
if (globalData->allCodecs.isEmpty())
setup();
QByteArray key = "MIB: " + QByteArray::number(mib);
QTextCodecCache *cache = &globalData->codecCache;
QTextCodec *codec;
if (cache) {
codec = cache->value(key);
if (codec)
return codec;
}
for (TextCodecListConstIt it = globalData->allCodecs.constBegin(), cend = globalData->allCodecs.constEnd(); it != cend; ++it) {
QTextCodec *cursor = *it;
if (cursor->mibEnum() == mib) {
if (cache)
cache->insert(key, cursor);
return cursor;
}
}
#ifdef QT_USE_ICU
return QIcuCodec::codecForMibUnlocked(mib);
#else
return 0;
#endif
}
/*!
Returns the list of all available codecs, by name. Call
QTextCodec::codecForName() to obtain the QTextCodec for the name.
The list may contain many mentions of the same codec
if the codec has aliases.
\sa availableMibs(), name(), aliases()
*/
QList<QByteArray> QTextCodec::availableCodecs()
{
QMutexLocker locker(textCodecsMutex());
setup();
QList<QByteArray> codecs;
if (!validCodecs())
return codecs;
for (int i = 0; i < all->size(); ++i) {
codecs += all->at(i)->name();
codecs += all->at(i)->aliases();
}
locker.unlock();
#if ! defined(QT_NO_TEXTCODECPLUGIN)
QFactoryLoader *l = loader();
QStringList keys = l->keys();
for (int i = 0; i < keys.size(); ++i) {
if (!keys.at(i).startsWith(QLatin1String("MIB: "))) {
QByteArray name = keys.at(i).toLatin1();
if (!codecs.contains(name))
codecs += name;
}
}
#endif
return codecs;
}
/*!
Returns the list of MIBs for all available codecs. Call
QTextCodec::codecForMib() to obtain the QTextCodec for the MIB.
\sa availableCodecs(), mibEnum()
*/
QList<int> QTextCodec::availableMibs()
{
QMutexLocker locker(textCodecsMutex());
setup();
QList<int> codecs;
if (!validCodecs())
return codecs;
for (int i = 0; i < all->size(); ++i)
codecs += all->at(i)->mibEnum();
locker.unlock();
#if ! defined(QT_NO_TEXTCODECPLUGIN)
QFactoryLoader *l = loader();
QStringList keys = l->keys();
for (int i = 0; i < keys.size(); ++i) {
if (keys.at(i).startsWith(QLatin1String("MIB: "))) {
int mib = keys.at(i).mid(5).toInt();
if (!codecs.contains(mib))
codecs += mib;
}
}
#endif
return codecs;
}
/*!
Constructs a QTextCodec, and gives it the highest precedence. The
QTextCodec should always be constructed on the heap (i.e. with \c
new). Qt takes ownership and will delete it when the application
terminates.
*/
QTextCodec::QTextCodec()
{
QMutexLocker locker(textCodecsMutex());
setup();
all->prepend(this);
}
/*!
Set the codec to \a c; this will be returned by
codecForLocale(). If \a c is a null pointer, the codec is reset to
the default.
This might be needed for some applications that want to use their
own mechanism for setting the locale.
\sa codecForLocale()
*/
void QTextCodec::setCodecForLocale(QTextCodec *c)
{
QMutexLocker locker(textCodecsMutex());
localeMapper = c;
if (!localeMapper)
setupLocaleMapper();
}
/*!
Constructs a QTextCodec, and gives it the highest precedence. The
QTextCodec should always be constructed on the heap (i.e. with \c
new). Qt takes ownership and will delete it when the application
terminates.
*/
QTextCodec::QTextCodec()
{
QMutexLocker locker(textCodecsMutex());
QCoreGlobalData *globalInstance = QCoreGlobalData::instance();
if (globalInstance->allCodecs.isEmpty())
setup();
globalInstance->allCodecs.prepend(this);
}
QTextCodec* QTextCodec::codecForLocale()
{
QCoreGlobalData *globalData = QCoreGlobalData::instance();
if (!globalData)
return 0;
QTextCodec *codec = globalData->codecForLocale.loadAcquire();
if (!codec) {
#ifdef QT_USE_ICU
textCodecsMutex()->lock();
codec = QIcuCodec::defaultCodecUnlocked();
textCodecsMutex()->unlock();
#else
// setupLocaleMapper locks as necessary
codec = setupLocaleMapper();
#endif
}
return codec;
}
QTextCodec* QTextCodec::codecForLocale()
{
if (!validCodecs())
return 0;
if (localeMapper)
return localeMapper;
QMutexLocker locker(textCodecsMutex());
setup();
return localeMapper;
}
/*!
\nonreentrant
Destroys the QTextCodec. Note that you should not delete codecs
yourself: once created they become Qt's responsibility.
*/
QTextCodec::~QTextCodec()
{
#ifdef Q_DEBUG_TEXTCODEC
if (!destroying_is_ok)
qWarning("QTextCodec::~QTextCodec: Called by application");
#endif
if (all) {
QMutexLocker locker(textCodecsMutex());
all->removeAll(this);
QTextCodecCache *cache = qTextCodecCache();
if (cache)
cache->clear();
}
}
/*!
\threadsafe
Returns the list of MIBs for all available codecs. Call
QTextCodec::codecForMib() to obtain the QTextCodec for the MIB.
\sa availableCodecs(), mibEnum()
*/
QList<int> QTextCodec::availableMibs()
{
#ifdef QT_USE_ICU
return QIcuCodec::availableMibs();
#else
QMutexLocker locker(textCodecsMutex());
QCoreGlobalData *globalData = QCoreGlobalData::instance();
if (globalData->allCodecs.isEmpty())
setup();
QList<int> codecs;
for (TextCodecListConstIt it = globalData->allCodecs.constBegin(), cend = globalData->allCodecs.constEnd(); it != cend; ++it)
codecs += (*it)->mibEnum();
return codecs;
#endif
}
/*!
\threadsafe
Searches all installed QTextCodec objects and returns the one
which best matches \a name; the match is case-insensitive. Returns
0 if no codec matching the name \a name could be found.
*/
QTextCodec *QTextCodec::codecForName(const QByteArray &name)
{
if (name.isEmpty())
return 0;
QMutexLocker locker(textCodecsMutex());
QCoreGlobalData *globalData = QCoreGlobalData::instance();
if (!globalData)
return 0;
setup();
#ifndef QT_USE_ICU
QTextCodecCache *cache = &globalData->codecCache;
QTextCodec *codec;
if (cache) {
codec = cache->value(name);
if (codec)
return codec;
}
for (TextCodecListConstIt it = globalData->allCodecs.constBegin(), cend = globalData->allCodecs.constEnd(); it != cend; ++it) {
QTextCodec *cursor = *it;
if (qTextCodecNameMatch(cursor->name(), name)) {
if (cache)
cache->insert(name, cursor);
return cursor;
}
QList<QByteArray> aliases = cursor->aliases();
for (ByteArrayListConstIt ait = aliases.constBegin(), acend = aliases.constEnd(); ait != acend; ++ait) {
if (qTextCodecNameMatch(*ait, name)) {
if (cache)
cache->insert(name, cursor);
return cursor;
}
}
}
return 0;
#else
return QIcuCodec::codecForNameUnlocked(name);
#endif
}
/*!
\threadsafe
Returns the list of MIBs for all available codecs. Call
QTextCodec::codecForMib() to obtain the QTextCodec for the MIB.
\sa availableCodecs(), mibEnum()
*/
QList<int> QTextCodec::availableMibs()
{
#ifdef QT_USE_ICU
return QIcuCodec::availableMibs();
#else
QMutexLocker locker(textCodecsMutex());
QCoreGlobalData *globalData = QCoreGlobalData::instance();
if (globalData->allCodecs.isEmpty())
setup();
QList<int> codecs;
for (int i = 0; i < globalData->allCodecs.size(); ++i)
codecs += globalData->allCodecs.at(i)->mibEnum();
return codecs;
#endif
}
/*!
\threadsafe
Searches all installed QTextCodec objects and returns the one
which best matches \a name; the match is case-insensitive. Returns
0 if no codec matching the name \a name could be found.
*/
QTextCodec *QTextCodec::codecForName(const QByteArray &name)
{
if (name.isEmpty())
return 0;
QMutexLocker locker(textCodecsMutex());
QCoreGlobalData *globalData = QCoreGlobalData::instance();
if (!globalData)
return 0;
setup();
#ifndef QT_USE_ICU
QTextCodecCache *cache = &globalData->codecCache;
QTextCodec *codec;
if (cache) {
codec = cache->value(name);
if (codec)
return codec;
}
for (int i = 0; i < globalData->allCodecs.size(); ++i) {
QTextCodec *cursor = globalData->allCodecs.at(i);
if (qTextCodecNameMatch(cursor->name(), name)) {
if (cache)
cache->insert(name, cursor);
return cursor;
}
QList<QByteArray> aliases = cursor->aliases();
for (int y = 0; y < aliases.size(); ++y)
if (qTextCodecNameMatch(aliases.at(y), name)) {
if (cache)
cache->insert(name, cursor);
return cursor;
}
}
return 0;
#else
return QIcuCodec::codecForNameUnlocked(name);
#endif
}
/*!
\threadsafe
Returns the list of all available codecs, by name. Call
QTextCodec::codecForName() to obtain the QTextCodec for the name.
The list may contain many mentions of the same codec
if the codec has aliases.
\sa availableMibs(), name(), aliases()
*/
QList<QByteArray> QTextCodec::availableCodecs()
{
QMutexLocker locker(textCodecsMutex());
QCoreGlobalData *globalData = QCoreGlobalData::instance();
if (globalData->allCodecs.isEmpty())
setup();
QList<QByteArray> codecs;
for (TextCodecListConstIt it = globalData->allCodecs.constBegin(), cend = globalData->allCodecs.constEnd(); it != cend; ++it) {
codecs += (*it)->name();
codecs += (*it)->aliases();
}
#ifdef QT_USE_ICU
codecs += QIcuCodec::availableCodecs();
#endif
return codecs;
}
/*!
\threadsafe
Returns the list of all available codecs, by name. Call
QTextCodec::codecForName() to obtain the QTextCodec for the name.
The list may contain many mentions of the same codec
if the codec has aliases.
\sa availableMibs(), name(), aliases()
*/
QList<QByteArray> QTextCodec::availableCodecs()
{
QMutexLocker locker(textCodecsMutex());
QCoreGlobalData *globalData = QCoreGlobalData::instance();
if (globalData->allCodecs.isEmpty())
setup();
QList<QByteArray> codecs;
for (int i = 0; i < globalData->allCodecs.size(); ++i) {
codecs += globalData->allCodecs.at(i)->name();
codecs += globalData->allCodecs.at(i)->aliases();
}
#ifdef QT_USE_ICU
codecs += QIcuCodec::availableCodecs();
#endif
return codecs;
}
/*!
Searches all installed QTextCodec objects and returns the one
which best matches \a name; the match is case-insensitive. Returns
0 if no codec matching the name \a name could be found.
*/
QTextCodec *QTextCodec::codecForName(const QByteArray &name)
{
if (name.isEmpty())
return 0;
QMutexLocker locker(textCodecsMutex());
setup();
if (!validCodecs())
return 0;
QTextCodecCache *cache = qTextCodecCache();
QTextCodec *codec;
if (cache) {
codec = cache->value(name);
if (codec)
return codec;
}
for (int i = 0; i < all->size(); ++i) {
QTextCodec *cursor = all->at(i);
if (nameMatch(cursor->name(), name)) {
if (cache)
cache->insert(name, cursor);
return cursor;
}
QList<QByteArray> aliases = cursor->aliases();
for (int y = 0; y < aliases.size(); ++y)
if (nameMatch(aliases.at(y), name)) {
if (cache)
cache->insert(name, cursor);
return cursor;
}
}
codec = createForName(name);
if (codec && cache)
cache->insert(name, codec);
return codec;
}
/*!
Returns the QTextCodec which matches the \link
QTextCodec::mibEnum() MIBenum\endlink \a mib.
*/
QTextCodec* QTextCodec::codecForMib(int mib)
{
QMutexLocker locker(textCodecsMutex());
setup();
if (!validCodecs())
return 0;
QByteArray key = "MIB: " + QByteArray::number(mib);
QTextCodecCache *cache = qTextCodecCache();
QTextCodec *codec;
if (cache) {
codec = cache->value(key);
if (codec)
return codec;
}
QList<QTextCodec*>::ConstIterator i;
for (int i = 0; i < all->size(); ++i) {
QTextCodec *cursor = all->at(i);
if (cursor->mibEnum() == mib) {
if (cache)
cache->insert(key, cursor);
return cursor;
}
}
codec = createForMib(mib);
// Qt 3 used 1000 (mib for UCS2) as its identifier for the utf16 codec. Map
// this correctly for compatibility.
if (!codec && mib == 1000)
return codecForMib(1015);
if (codec && cache)
cache->insert(key, codec);
return codec;
}
/*!
\threadsafe
Returns the QTextCodec which matches the
\l{QTextCodec::mibEnum()}{MIBenum} \a mib.
*/
QTextCodec* QTextCodec::codecForMib(int mib)
{
QMutexLocker locker(textCodecsMutex());
QCoreGlobalData *globalData = QCoreGlobalData::instance();
if (!globalData)
return 0;
if (globalData->allCodecs.isEmpty())
setup();
QByteArray key = "MIB: " + QByteArray::number(mib);
QTextCodecCache *cache = &globalData->codecCache;
QTextCodec *codec;
if (cache) {
codec = cache->value(key);
if (codec)
return codec;
}
QList<QTextCodec*>::ConstIterator i;
for (int i = 0; i < globalData->allCodecs.size(); ++i) {
QTextCodec *cursor = globalData->allCodecs.at(i);
if (cursor->mibEnum() == mib) {
if (cache)
cache->insert(key, cursor);
return cursor;
}
}
#ifdef QT_USE_ICU
return QIcuCodec::codecForMibUnlocked(mib);
#else
return 0;
#endif
}
// \threadsafe
// this returns the codec the method sets up as locale codec to
// avoid a race condition in codecForLocale() when
// setCodecForLocale(0) is called at the same time.
static QTextCodec *setupLocaleMapper()
{
QCoreGlobalData *globalData = QCoreGlobalData::instance();
QTextCodec *locale = 0;
{
QMutexLocker locker(textCodecsMutex());
if (globalData->allCodecs.isEmpty())
setup();
}
#if !defined(QT_BOOTSTRAPPED)
QCoreApplicationPrivate::initLocale();
#endif
#if defined(QT_LOCALE_IS_UTF8)
locale = QTextCodec::codecForName("UTF-8");
#elif defined(Q_OS_WIN) || defined(Q_OS_WINCE)
locale = QTextCodec::codecForName("System");
#else
// First try getting the codecs name from nl_langinfo and see
// if we have a builtin codec for it.
// Only fall back to using iconv if we can't find a builtin codec
// This is because the builtin utf8 codec is around 5 times faster
// then the using QIconvCodec
#if defined (_XOPEN_UNIX) && !defined(Q_OS_OSF)
char *charset = nl_langinfo(CODESET);
if (charset)
locale = QTextCodec::codecForName(charset);
#endif
#if !defined(QT_NO_ICONV) && !defined(QT_BOOTSTRAPPED)
if (!locale) {
// no builtin codec for the locale found, let's try using iconv
(void) new QIconvCodec();
locale = QTextCodec::codecForName("System");
}
#endif
if (!locale) {
// Very poorly defined and followed standards causes lots of
// code to try to get all the cases... This logic is
// duplicated in QIconvCodec, so if you change it here, change
// it there too.
// Try to determine locale codeset from locale name assigned to
// LC_CTYPE category.
// First part is getting that locale name. First try setlocale() which
// definitely knows it, but since we cannot fully trust it, get ready
// to fall back to environment variables.
const QByteArray ctype = setlocale(LC_CTYPE, 0);
// Get the first nonempty value from $LC_ALL, $LC_CTYPE, and $LANG
// environment variables.
QByteArray lang = qgetenv("LC_ALL");
if (lang.isEmpty() || lang == "C") {
lang = qgetenv("LC_CTYPE");
}
if (lang.isEmpty() || lang == "C") {
lang = qgetenv("LANG");
}
// Now try these in order:
// 1. CODESET from ctype if it contains a .CODESET part (e.g. en_US.ISO8859-15)
// 2. CODESET from lang if it contains a .CODESET part
// 3. ctype (maybe the locale is named "ISO-8859-1" or something)
// 4. locale (ditto)
// 5. check for "@euro"
// 6. guess locale from ctype unless ctype is "C"
// 7. guess locale from lang
// 1. CODESET from ctype if it contains a .CODESET part (e.g. en_US.ISO8859-15)
int indexOfDot = ctype.indexOf('.');
if (indexOfDot != -1)
locale = checkForCodec( ctype.mid(indexOfDot + 1) );
// 2. CODESET from lang if it contains a .CODESET part
if (!locale) {
indexOfDot = lang.indexOf('.');
if (indexOfDot != -1)
locale = checkForCodec( lang.mid(indexOfDot + 1) );
}
// 3. ctype (maybe the locale is named "ISO-8859-1" or something)
if (!locale && !ctype.isEmpty() && ctype != "C")
locale = checkForCodec(ctype);
// 4. locale (ditto)
if (!locale && !lang.isEmpty())
locale = checkForCodec(lang);
// 5. "@euro"
if ((!locale && ctype.contains("@euro")) || lang.contains("@euro"))
locale = checkForCodec("ISO 8859-15");
}
#endif
// If everything failed, we default to 8859-1
if (!locale)
locale = QTextCodec::codecForName("ISO 8859-1");
globalData->codecForLocale.storeRelease(locale);
return locale;
}
QMutex *qTextCodecsMutex() { return textCodecsMutex(); }
/*!
Constructs a QTextCodec, and gives it the highest precedence. The
QTextCodec should always be constructed on the heap (i.e. with \c
new). Qt takes ownership and will delete it when the application
terminates.
*/
QTextCodec::QTextCodec()
{
QMutexLocker locker(textCodecsMutex());
QCoreGlobalData::instance()->allCodecs.prepend(this);
}
