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GPXSee/src/common/textcodec.cpp

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Switched from fallback encodings to core5compat module in Qt6 builds Archlinux has started to use the Qt6 build, so to support the legacy East Asian encodings use the compat module rather than a "clean" but less functional fallback solution and hope there will be some replacement in Qt6 before the module gets dropped. Non-UTF XML files will however still not work.
2021-10-27 20:29:12 +02:00
#include "textcodec.h"
Use QTextCodec for conversions to UTF on Qt5 This way we can support East Asian encodings at least on Qt5 in some way (the Qt codecs are not 100% compatible with the CPx encodings, but the result should be much better than a fallback to cp1250...).
2021-10-25 10:30:09 +02:00
Drop Qt5Compat dependency Use QStringConverter instead of QTextCodec on Qt > 6.5. Qt6 builds now require Qt build with ICU support for the non-UTF encodings to work!
2024-01-18 10:04:38 +01:00
#if QT_VERSION < QT_VERSION_CHECK(6, 5, 0)
Use MIB numbers for QTextCodec fetching Discard the "broken name cache" workaround and use QTextCodec search based on MIB numbers.
2023-12-22 09:32:47 +01:00
static QTextCodec *codec(int mib)
Use QTextCodec for conversions to UTF on Qt5 This way we can support East Asian encodings at least on Qt5 in some way (the Qt codecs are not 100% compatible with the CPx encodings, but the result should be much better than a fallback to cp1250...).
2021-10-25 10:30:09 +02:00
{
Use MIB numbers for QTextCodec fetching Discard the "broken name cache" workaround and use QTextCodec search based on MIB numbers.
2023-12-22 09:32:47 +01:00
QTextCodec *c = QTextCodec::codecForMib(mib);
if (!c)
qWarning("MIB-%d: No such QTextCodec, using UTF-8", mib);
Optimize TextCodec initialization QTextCodec initialization is very slow due to it's broken caching in Qt when ICU is enabled. Make TetCodec initialize fast anyway as it may be used very often in IMG maps (every LBL subfile has it's own codec!).
2023-12-21 01:31:44 +01:00
Use MIB numbers for QTextCodec fetching Discard the "broken name cache" workaround and use QTextCodec search based on MIB numbers.
2023-12-22 09:32:47 +01:00
return c;
Use QTextCodec for conversions to UTF on Qt5 This way we can support East Asian encodings at least on Qt5 in some way (the Qt codecs are not 100% compatible with the CPx encodings, but the result should be much better than a fallback to cp1250...).
2021-10-25 10:30:09 +02:00
}
Drop Qt5Compat dependency Use QStringConverter instead of QTextCodec on Qt > 6.5. Qt6 builds now require Qt build with ICU support for the non-UTF encodings to work!
2024-01-18 10:04:38 +01:00
TextCodec::TextCodec() : _codec(0)
{
}
Use QTextCodec for conversions to UTF on Qt5 This way we can support East Asian encodings at least on Qt5 in some way (the Qt codecs are not 100% compatible with the CPx encodings, but the result should be much better than a fallback to cp1250...).
2021-10-25 10:30:09 +02:00
TextCodec::TextCodec(int codepage)
{
Use MIB numbers for QTextCodec fetching Discard the "broken name cache" workaround and use QTextCodec search based on MIB numbers.
2023-12-22 09:32:47 +01:00
switch (codepage) {
case 874:
_codec = codec(2109);
break;
case 932:
_codec = codec(17);
break;
case 936:
_codec = codec(114);
break;
case 949:
_codec = codec(38);
break;
case 950:
_codec = codec(2026);
break;
case 1250:
_codec = codec(2250);
break;
case 1251:
_codec = codec(2251);
break;
case 1252:
_codec = codec(2252);
break;
case 1253:
_codec = codec(2253);
break;
case 1254:
_codec = codec(2254);
break;
case 1255:
_codec = codec(2255);
break;
case 1256:
_codec = codec(2256);
break;
case 1257:
_codec = codec(2257);
break;
case 1258:
_codec = codec(2258);
break;
case 65001:
_codec = 0;
break;
default:
qWarning("%d: Unknown codepage, using UTF-8", codepage);
_codec = 0;
}
Use QTextCodec for conversions to UTF on Qt5 This way we can support East Asian encodings at least on Qt5 in some way (the Qt codecs are not 100% compatible with the CPx encodings, but the result should be much better than a fallback to cp1250...).
2021-10-25 10:30:09 +02:00
}
Drop Qt5Compat dependency Use QStringConverter instead of QTextCodec on Qt > 6.5. Qt6 builds now require Qt build with ICU support for the non-UTF encodings to work!
2024-01-18 10:04:38 +01:00
QString TextCodec::toString(const QByteArray &ba)
Use QTextCodec for conversions to UTF on Qt5 This way we can support East Asian encodings at least on Qt5 in some way (the Qt codecs are not 100% compatible with the CPx encodings, but the result should be much better than a fallback to cp1250...).
2021-10-25 10:30:09 +02:00
{
return _codec ? _codec->toUnicode(ba) : QString::fromUtf8(ba);
}
Drop Qt5Compat dependency Use QStringConverter instead of QTextCodec on Qt > 6.5. Qt6 builds now require Qt build with ICU support for the non-UTF encodings to work!
2024-01-18 10:04:38 +01:00
#else // QT 6.5
TextCodec::TextCodec()
{
}
TextCodec::TextCodec(int codepage)
{
if (codepage != 65001) {
QByteArray cp(QByteArray("CP") + QByteArray::number(codepage));
_decoder = QStringDecoder(cp.constData());
if (!_decoder.isValid())
qWarning("%d: Unknown codepage, using UTF-8", codepage);
}
}
QString TextCodec::toString(const QByteArray &ba)
{
return _decoder.isValid() ? _decoder.decode(ba) : QString::fromUtf8(ba);
}
#endif // QT 6.5
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