diff options
Diffstat (limited to 'src/corelib/codecs/qutfcodec.cpp')
| -rw-r--r-- | src/corelib/codecs/qutfcodec.cpp | 349 |
1 files changed, 183 insertions, 166 deletions
diff --git a/src/corelib/codecs/qutfcodec.cpp b/src/corelib/codecs/qutfcodec.cpp index abae6f7..abcc07c 100644 --- a/src/corelib/codecs/qutfcodec.cpp +++ b/src/corelib/codecs/qutfcodec.cpp @@ -44,23 +44,19 @@ #include "qendian.h" #include "qchar.h" -#ifndef QT_NO_TEXTCODEC - QT_BEGIN_NAMESPACE -QUtf8Codec::~QUtf8Codec() -{ -} +enum { Endian = 0, Data = 1 }; -QByteArray QUtf8Codec::convertFromUnicode(const QChar *uc, int len, ConverterState *state) const +QByteArray QUtf8::convertFromUnicode(const QChar *uc, int len, QTextCodec::ConverterState *state) { uchar replacement = '?'; int rlen = 3*len; int surrogate_high = -1; if (state) { - if (state->flags & ConvertInvalidToNull) + if (state->flags & QTextCodec::ConvertInvalidToNull) replacement = 0; - if (!(state->flags & IgnoreHeader)) + if (!(state->flags & QTextCodec::IgnoreHeader)) rlen += 3; if (state->remainingChars) surrogate_high = state->state_data[0]; @@ -71,7 +67,7 @@ QByteArray QUtf8Codec::convertFromUnicode(const QChar *uc, int len, ConverterSta uchar* cursor = (uchar*)rstr.data(); const QChar *ch = uc; int invalid = 0; - if (state && !(state->flags & IgnoreHeader)) { + if (state && !(state->flags & QTextCodec::IgnoreHeader)) { *cursor++ = 0xef; *cursor++ = 0xbb; *cursor++ = 0xbf; @@ -133,7 +129,7 @@ QByteArray QUtf8Codec::convertFromUnicode(const QChar *uc, int len, ConverterSta rstr.resize(cursor - (const uchar*)rstr.constData()); if (state) { state->invalidChars += invalid; - state->flags |= IgnoreHeader; + state->flags |= QTextCodec::IgnoreHeader; state->remainingChars = 0; if (surrogate_high >= 0) { state->remainingChars = 1; @@ -143,18 +139,18 @@ QByteArray QUtf8Codec::convertFromUnicode(const QChar *uc, int len, ConverterSta return rstr; } -void QUtf8Codec::convertToUnicode(QString *target, const char *chars, int len, ConverterState *state) const +QString QUtf8::convertToUnicode(const char *chars, int len, QTextCodec::ConverterState *state) { bool headerdone = false; - QChar replacement = QChar::ReplacementCharacter; + ushort replacement = QChar::ReplacementCharacter; int need = 0; int error = -1; uint uc = 0; uint min_uc = 0; if (state) { - if (state->flags & IgnoreHeader) + if (state->flags & QTextCodec::IgnoreHeader) headerdone = true; - if (state->flags & ConvertInvalidToNull) + if (state->flags & QTextCodec::ConvertInvalidToNull) replacement = QChar::Null; need = state->remainingChars; if (need) { @@ -170,40 +166,28 @@ void QUtf8Codec::convertToUnicode(QString *target, const char *chars, int len, C headerdone = true; } - int originalLength = target->length(); - QString &result = *target; - result.resize(originalLength + len + 1); // worst case - QChar *qch = result.data() + originalLength; + QString result(need + len + 1, Qt::Uninitialized); // worst case + ushort *qch = (ushort *)result.unicode(); uchar ch; int invalid = 0; - for (int i=0; i<len; i++) { + for (int i = 0; i < len; ++i) { ch = chars[i]; if (need) { if ((ch&0xc0) == 0x80) { uc = (uc << 6) | (ch & 0x3f); - need--; + --need; if (!need) { // utf-8 bom composes into 0xfeff code point if (!headerdone && uc == 0xfeff) { // dont do anything, just skip the BOM } else if (uc > 0xffff && uc < 0x110000) { // surrogate pair - uc -= 0x10000; - unsigned short high = uc/0x400 + 0xd800; - unsigned short low = uc%0x400 + 0xdc00; - - // resize if necessary - long where = qch - result.unicode(); - if (where + 2 >= result.length()) { - result.resize(where + 2); - qch = result.data() + where; - } - - *qch++ = QChar(high); - *qch++ = QChar(low); + Q_ASSERT((qch - (ushort*)result.unicode()) + 2 < result.length()); + *qch++ = QChar::highSurrogate(uc); + *qch++ = QChar::lowSurrogate(uc); } else if ((uc < min_uc) || (uc >= 0xd800 && uc <= 0xdfff) || (uc >= 0xfffe)) { - // error + // error: overlong sequence, UTF16 surrogate or BOM *qch++ = replacement; ++invalid; } else { @@ -221,7 +205,7 @@ void QUtf8Codec::convertToUnicode(QString *target, const char *chars, int len, C } } else { if (ch < 128) { - *qch++ = QLatin1Char(ch); + *qch++ = ushort(ch); headerdone = true; } else if ((ch & 0xe0) == 0xc0) { uc = ch & 0x1f; @@ -255,57 +239,35 @@ void QUtf8Codec::convertToUnicode(QString *target, const char *chars, int len, C ++invalid; } } - result.truncate(qch - result.unicode()); + result.truncate(qch - (ushort *)result.unicode()); if (state) { state->invalidChars += invalid; state->remainingChars = need; if (headerdone) - state->flags |= IgnoreHeader; + state->flags |= QTextCodec::IgnoreHeader; state->state_data[0] = need ? uc : 0; state->state_data[1] = need ? min_uc : 0; } -} - -QString QUtf8Codec::convertToUnicode(const char *chars, int len, ConverterState *state) const -{ - QString result; - convertToUnicode(&result, chars, len, state); return result; } -QByteArray QUtf8Codec::name() const -{ - return "UTF-8"; -} - -int QUtf8Codec::mibEnum() const -{ - return 106; -} - -enum { Endian = 0, Data = 1 }; - -QUtf16Codec::~QUtf16Codec() -{ -} - -QByteArray QUtf16Codec::convertFromUnicode(const QChar *uc, int len, ConverterState *state) const +QByteArray QUtf16::convertFromUnicode(const QChar *uc, int len, QTextCodec::ConverterState *state, DataEndianness e) { - Endianness endian = e; + DataEndianness endian = e; int length = 2*len; - if (!state || (!(state->flags & IgnoreHeader))) { + if (!state || (!(state->flags & QTextCodec::IgnoreHeader))) { length += 2; } - if (e == Detect) { - endian = (QSysInfo::ByteOrder == QSysInfo::BigEndian) ? BE : LE; + if (e == DetectEndianness) { + endian = (QSysInfo::ByteOrder == QSysInfo::BigEndian) ? BigEndianness : LittleEndianness; } QByteArray d; d.resize(length); char *data = d.data(); - if (!state || !(state->flags & IgnoreHeader)) { + if (!state || !(state->flags & QTextCodec::IgnoreHeader)) { QChar bom(QChar::ByteOrderMark); - if (endian == BE) { + if (endian == BigEndianness) { data[0] = bom.row(); data[1] = bom.cell(); } else { @@ -314,7 +276,7 @@ QByteArray QUtf16Codec::convertFromUnicode(const QChar *uc, int len, ConverterSt } data += 2; } - if (endian == BE) { + if (endian == BigEndianness) { for (int i = 0; i < len; ++i) { *(data++) = uc[i].row(); *(data++) = uc[i].cell(); @@ -328,35 +290,35 @@ QByteArray QUtf16Codec::convertFromUnicode(const QChar *uc, int len, ConverterSt if (state) { state->remainingChars = 0; - state->flags |= IgnoreHeader; + state->flags |= QTextCodec::IgnoreHeader; } return d; } -QString QUtf16Codec::convertToUnicode(const char *chars, int len, ConverterState *state) const +QString QUtf16::convertToUnicode(const char *chars, int len, QTextCodec::ConverterState *state, DataEndianness e) { - Endianness endian = e; + DataEndianness endian = e; bool half = false; uchar buf = 0; bool headerdone = false; if (state) { - headerdone = state->flags & IgnoreHeader; - if (endian == Detect) - endian = (Endianness)state->state_data[Endian]; + headerdone = state->flags & QTextCodec::IgnoreHeader; + if (endian == DetectEndianness) + endian = (DataEndianness)state->state_data[Endian]; if (state->remainingChars) { half = true; buf = state->state_data[Data]; } } - if (headerdone && endian == Detect) - endian = (QSysInfo::ByteOrder == QSysInfo::BigEndian) ? BE : LE; + if (headerdone && endian == DetectEndianness) + endian = (QSysInfo::ByteOrder == QSysInfo::BigEndian) ? BigEndianness : LittleEndianness; QString result(len, Qt::Uninitialized); // worst case QChar *qch = (QChar *)result.unicode(); while (len--) { if (half) { QChar ch; - if (endian == LE) { + if (endian == LittleEndianness) { ch.setRow(*chars++); ch.setCell(buf); } else { @@ -364,17 +326,17 @@ QString QUtf16Codec::convertToUnicode(const char *chars, int len, ConverterState ch.setCell(*chars++); } if (!headerdone) { - if (endian == Detect) { - if (ch == QChar::ByteOrderSwapped && endian != BE) { - endian = LE; - } else if (ch == QChar::ByteOrderMark && endian != LE) { + if (endian == DetectEndianness) { + if (ch == QChar::ByteOrderSwapped && endian != BigEndianness) { + endian = LittleEndianness; + } else if (ch == QChar::ByteOrderMark && endian != LittleEndianness) { // ignore BOM - endian = BE; + endian = BigEndianness; } else { if (QSysInfo::ByteOrder == QSysInfo::BigEndian) { - endian = BE; + endian = BigEndianness; } else { - endian = LE; + endian = LittleEndianness; ch = QChar((ch.unicode() >> 8) | ((ch.unicode() & 0xff) << 8)); } *qch++ = ch; @@ -396,7 +358,7 @@ QString QUtf16Codec::convertToUnicode(const char *chars, int len, ConverterState if (state) { if (headerdone) - state->flags |= IgnoreHeader; + state->flags |= QTextCodec::IgnoreHeader; state->state_data[Endian] = endian; if (half) { state->remainingChars = 1; @@ -409,72 +371,21 @@ QString QUtf16Codec::convertToUnicode(const char *chars, int len, ConverterState return result; } -int QUtf16Codec::mibEnum() const -{ - return 1015; -} - -QByteArray QUtf16Codec::name() const -{ - return "UTF-16"; -} - -QList<QByteArray> QUtf16Codec::aliases() const -{ - return QList<QByteArray>(); -} - -int QUtf16BECodec::mibEnum() const -{ - return 1013; -} - -QByteArray QUtf16BECodec::name() const -{ - return "UTF-16BE"; -} - -QList<QByteArray> QUtf16BECodec::aliases() const -{ - QList<QByteArray> list; - return list; -} - -int QUtf16LECodec::mibEnum() const -{ - return 1014; -} - -QByteArray QUtf16LECodec::name() const -{ - return "UTF-16LE"; -} - -QList<QByteArray> QUtf16LECodec::aliases() const -{ - QList<QByteArray> list; - return list; -} - -QUtf32Codec::~QUtf32Codec() -{ -} - -QByteArray QUtf32Codec::convertFromUnicode(const QChar *uc, int len, ConverterState *state) const +QByteArray QUtf32::convertFromUnicode(const QChar *uc, int len, QTextCodec::ConverterState *state, DataEndianness e) { - Endianness endian = e; + DataEndianness endian = e; int length = 4*len; - if (!state || (!(state->flags & IgnoreHeader))) { + if (!state || (!(state->flags & QTextCodec::IgnoreHeader))) { length += 4; } - if (e == Detect) { - endian = (QSysInfo::ByteOrder == QSysInfo::BigEndian) ? BE : LE; + if (e == DetectEndianness) { + endian = (QSysInfo::ByteOrder == QSysInfo::BigEndian) ? BigEndianness : LittleEndianness; } QByteArray d(length, Qt::Uninitialized); char *data = d.data(); - if (!state || !(state->flags & IgnoreHeader)) { - if (endian == BE) { + if (!state || !(state->flags & QTextCodec::IgnoreHeader)) { + if (endian == BigEndianness) { data[0] = 0; data[1] = 0; data[2] = (char)0xfe; @@ -487,7 +398,7 @@ QByteArray QUtf32Codec::convertFromUnicode(const QChar *uc, int len, ConverterSt } data += 4; } - if (endian == BE) { + if (endian == BigEndianness) { for (int i = 0; i < len; ++i) { uint cp = uc[i].unicode(); if (uc[i].isHighSurrogate() && i < len - 1) @@ -511,59 +422,59 @@ QByteArray QUtf32Codec::convertFromUnicode(const QChar *uc, int len, ConverterSt if (state) { state->remainingChars = 0; - state->flags |= IgnoreHeader; + state->flags |= QTextCodec::IgnoreHeader; } return d; } -QString QUtf32Codec::convertToUnicode(const char *chars, int len, ConverterState *state) const +QString QUtf32::convertToUnicode(const char *chars, int len, QTextCodec::ConverterState *state, DataEndianness e) { - Endianness endian = e; + DataEndianness endian = e; uchar tuple[4]; int num = 0; bool headerdone = false; if (state) { - headerdone = state->flags & IgnoreHeader; - if (endian == Detect) { - endian = (Endianness)state->state_data[Endian]; + headerdone = state->flags & QTextCodec::IgnoreHeader; + if (endian == DetectEndianness) { + endian = (DataEndianness)state->state_data[Endian]; } num = state->remainingChars; memcpy(tuple, &state->state_data[Data], 4); } - if (headerdone && endian == Detect) - endian = (QSysInfo::ByteOrder == QSysInfo::BigEndian) ? BE : LE; + if (headerdone && endian == DetectEndianness) + endian = (QSysInfo::ByteOrder == QSysInfo::BigEndian) ? BigEndianness : LittleEndianness; QString result; result.resize((num + len) >> 2 << 1); // worst case QChar *qch = (QChar *)result.unicode(); - + const char *end = chars + len; while (chars < end) { tuple[num++] = *chars++; if (num == 4) { if (!headerdone) { - if (endian == Detect) { - if (endian == Detect) { - if (tuple[0] == 0xff && tuple[1] == 0xfe && tuple[2] == 0 && tuple[3] == 0 && endian != BE) { - endian = LE; + if (endian == DetectEndianness) { + if (endian == DetectEndianness) { + if (tuple[0] == 0xff && tuple[1] == 0xfe && tuple[2] == 0 && tuple[3] == 0 && endian != BigEndianness) { + endian = LittleEndianness; num = 0; continue; - } else if (tuple[0] == 0 && tuple[1] == 0 && tuple[2] == 0xfe && tuple[3] == 0xff && endian != LE) { - endian = BE; + } else if (tuple[0] == 0 && tuple[1] == 0 && tuple[2] == 0xfe && tuple[3] == 0xff && endian != LittleEndianness) { + endian = BigEndianness; num = 0; continue; } else if (QSysInfo::ByteOrder == QSysInfo::BigEndian) { - endian = BE; + endian = BigEndianness; } else { - endian = LE; + endian = LittleEndianness; } } - } else if (((endian == BE) ? qFromBigEndian<quint32>(tuple) : qFromLittleEndian<quint32>(tuple)) == QChar::ByteOrderMark) { + } else if (((endian == BigEndianness) ? qFromBigEndian<quint32>(tuple) : qFromLittleEndian<quint32>(tuple)) == QChar::ByteOrderMark) { num = 0; continue; } } - uint code = (endian == BE) ? qFromBigEndian<quint32>(tuple) : qFromLittleEndian<quint32>(tuple); + uint code = (endian == BigEndianness) ? qFromBigEndian<quint32>(tuple) : qFromLittleEndian<quint32>(tuple); if (code >= 0x10000) { *qch++ = QChar::highSurrogate(code); *qch++ = QChar::lowSurrogate(code); @@ -574,10 +485,10 @@ QString QUtf32Codec::convertToUnicode(const char *chars, int len, ConverterState } } result.truncate(qch - result.unicode()); - + if (state) { if (headerdone) - state->flags |= IgnoreHeader; + state->flags |= QTextCodec::IgnoreHeader; state->state_data[Endian] = endian; state->remainingChars = num; memcpy(&state->state_data[Data], tuple, 4); @@ -585,6 +496,113 @@ QString QUtf32Codec::convertToUnicode(const char *chars, int len, ConverterState return result; } + +#ifndef QT_NO_TEXTCODEC + +QUtf8Codec::~QUtf8Codec() +{ +} + +QByteArray QUtf8Codec::convertFromUnicode(const QChar *uc, int len, ConverterState *state) const +{ + return QUtf8::convertFromUnicode(uc, len, state); +} + +void QUtf8Codec::convertToUnicode(QString *target, const char *chars, int len, ConverterState *state) const +{ + *target += QUtf8::convertToUnicode(chars, len, state); +} + +QString QUtf8Codec::convertToUnicode(const char *chars, int len, ConverterState *state) const +{ + return QUtf8::convertToUnicode(chars, len, state); +} + +QByteArray QUtf8Codec::name() const +{ + return "UTF-8"; +} + +int QUtf8Codec::mibEnum() const +{ + return 106; +} + +QUtf16Codec::~QUtf16Codec() +{ +} + +QByteArray QUtf16Codec::convertFromUnicode(const QChar *uc, int len, ConverterState *state) const +{ + return QUtf16::convertFromUnicode(uc, len, state, e); +} + +QString QUtf16Codec::convertToUnicode(const char *chars, int len, ConverterState *state) const +{ + return QUtf16::convertToUnicode(chars, len, state, e); +} + +int QUtf16Codec::mibEnum() const +{ + return 1015; +} + +QByteArray QUtf16Codec::name() const +{ + return "UTF-16"; +} + +QList<QByteArray> QUtf16Codec::aliases() const +{ + return QList<QByteArray>(); +} + +int QUtf16BECodec::mibEnum() const +{ + return 1013; +} + +QByteArray QUtf16BECodec::name() const +{ + return "UTF-16BE"; +} + +QList<QByteArray> QUtf16BECodec::aliases() const +{ + QList<QByteArray> list; + return list; +} + +int QUtf16LECodec::mibEnum() const +{ + return 1014; +} + +QByteArray QUtf16LECodec::name() const +{ + return "UTF-16LE"; +} + +QList<QByteArray> QUtf16LECodec::aliases() const +{ + QList<QByteArray> list; + return list; +} + +QUtf32Codec::~QUtf32Codec() +{ +} + +QByteArray QUtf32Codec::convertFromUnicode(const QChar *uc, int len, ConverterState *state) const +{ + return QUtf32::convertFromUnicode(uc, len, state, e); +} + +QString QUtf32Codec::convertToUnicode(const char *chars, int len, ConverterState *state) const +{ + return QUtf32::convertToUnicode(chars, len, state, e); +} + int QUtf32Codec::mibEnum() const { return 1017; @@ -633,7 +651,6 @@ QList<QByteArray> QUtf32LECodec::aliases() const return list; } +#endif //QT_NO_TEXTCODEC QT_END_NAMESPACE - -#endif //QT_NO_TEXTCODEC |