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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
// Most of the code here was originally written by Serika Kurusugawa
// a.k.a. Junji Takagi, and is included in Qt with the author's permission,
// and the grateful thanks of the Qt team.
/*! \class QSjisCodec
\reentrant
\internal
*/
#include "qsjiscodec.h"
#include "qlist.h"
QT_BEGIN_NAMESPACE
#ifndef QT_NO_TEXTCODEC
enum {
Esc = 0x1b
};
#define IsKana(c) (((c) >= 0xa1) && ((c) <= 0xdf))
#define IsSjisChar1(c) ((((c) >= 0x81) && ((c) <= 0x9f)) || \
(((c) >= 0xe0) && ((c) <= 0xfc)))
#define IsSjisChar2(c) (((c) >= 0x40) && ((c) != 0x7f) && ((c) <= 0xfc))
#define IsUserDefinedChar1(c) (((c) >= 0xf0) && ((c) <= 0xfc))
#define QValidChar(u) ((u) ? QChar((ushort)(u)) : QChar(QChar::ReplacementCharacter))
/*!
Creates a Shift-JIS codec. Note that this is done automatically by
the QApplication, you do not need construct your own.
*/
QSjisCodec::QSjisCodec() : conv(QJpUnicodeConv::newConverter(QJpUnicodeConv::Default))
{
}
/*!
Destroys the Shift-JIS codec.
*/
QSjisCodec::~QSjisCodec()
{
delete (QJpUnicodeConv*)conv;
conv = 0;
}
QByteArray QSjisCodec::convertFromUnicode(const QChar *uc, int len, ConverterState *state) const
{
char replacement = '?';
if (state) {
if (state->flags & ConvertInvalidToNull)
replacement = 0;
}
int invalid = 0;
int rlen = 2*len + 1;
QByteArray rstr;
rstr.resize(rlen);
uchar* cursor = (uchar*)rstr.data();
for (int i = 0; i < len; i++) {
QChar ch = uc[i];
uint j;
if (ch.row() == 0x00 && ch.cell() < 0x80) {
// ASCII
*cursor++ = ch.cell();
} else if ((j = conv->unicodeToJisx0201(ch.row(), ch.cell())) != 0) {
// JIS X 0201 Latin or JIS X 0201 Kana
*cursor++ = j;
} else if ((j = conv->unicodeToSjis(ch.row(), ch.cell())) != 0) {
// JIS X 0208
*cursor++ = (j >> 8);
*cursor++ = (j & 0xff);
} else if ((j = conv->unicodeToSjisibmvdc(ch.row(), ch.cell())) != 0) {
// JIS X 0208 IBM VDC
*cursor++ = (j >> 8);
*cursor++ = (j & 0xff);
} else if ((j = conv->unicodeToCp932(ch.row(), ch.cell())) != 0) {
// CP932 (for lead bytes 87, ee & ed)
*cursor++ = (j >> 8);
*cursor++ = (j & 0xff);
} else if ((j = conv->unicodeToJisx0212(ch.row(), ch.cell())) != 0) {
// JIS X 0212 (can't be encoded in ShiftJIS !)
*cursor++ = 0x81; // white square
*cursor++ = 0xa0; // white square
} else {
// Error
*cursor++ = replacement;
++invalid;
}
}
rstr.resize(cursor - (const uchar*)rstr.constData());
if (state) {
state->invalidChars += invalid;
}
return rstr;
}
QString QSjisCodec::convertToUnicode(const char* chars, int len, ConverterState *state) const
{
uchar buf[1] = {0};
int nbuf = 0;
QChar replacement = QChar::ReplacementCharacter;
if (state) {
if (state->flags & ConvertInvalidToNull)
replacement = QChar::Null;
nbuf = state->remainingChars;
buf[0] = state->state_data[0];
}
int invalid = 0;
uint u= 0;
QString result;
for (int i=0; i<len; i++) {
uchar ch = chars[i];
switch (nbuf) {
case 0:
if (ch < 0x80 || IsKana(ch)) {
// JIS X 0201 Latin or JIS X 0201 Kana
u = conv->jisx0201ToUnicode(ch);
result += QValidChar(u);
} else if (IsSjisChar1(ch)) {
// JIS X 0208
buf[0] = ch;
nbuf = 1;
} else {
// Invalid
result += replacement;
++invalid;
}
break;
case 1:
// JIS X 0208
if (IsSjisChar2(ch)) {
if ((u = conv->sjisibmvdcToUnicode(buf[0], ch))) {
result += QValidChar(u);
} else if ((u = conv->cp932ToUnicode(buf[0], ch))) {
result += QValidChar(u);
}
else if (IsUserDefinedChar1(buf[0])) {
result += QChar::ReplacementCharacter;
} else {
u = conv->sjisToUnicode(buf[0], ch);
result += QValidChar(u);
}
} else {
// Invalid
result += replacement;
++invalid;
}
nbuf = 0;
break;
}
}
if (state) {
state->remainingChars = nbuf;
state->state_data[0] = buf[0];
state->invalidChars += invalid;
}
return result;
}
int QSjisCodec::_mibEnum()
{
return 17;
}
QByteArray QSjisCodec::_name()
{
return "Shift_JIS";
}
/*!
Returns the codec's mime name.
*/
QList<QByteArray> QSjisCodec::_aliases()
{
QList<QByteArray> list;
list << "SJIS" // Qt 3 compat
<< "MS_Kanji";
return list;
}
#endif // QT_NO_TEXTCODEC
QT_END_NAMESPACE
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