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authorTimothy Pearson <[email protected]>2011-11-08 12:31:36 -0600
committerTimothy Pearson <[email protected]>2011-11-08 12:31:36 -0600
commitd796c9dd933ab96ec83b9a634feedd5d32e1ba3f (patch)
tree6e3dcca4f77e20ec8966c666aac7c35bd4704053 /src/codecs/qeucjpcodec.cpp
downloadtqt3-d796c9dd933ab96ec83b9a634feedd5d32e1ba3f.tar.gz
tqt3-d796c9dd933ab96ec83b9a634feedd5d32e1ba3f.zip
Test conversion to TQt3 from Qt3 8c6fc1f8e35fd264dd01c582ca5e7549b32ab731
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+/****************************************************************************
+**
+** Implementation of TQEucJpCodec class
+**
+** Created : 990225
+**
+** Copyright (C) 2000-2008 Trolltech ASA. All rights reserved.
+**
+** This file is part of the tools module of the TQt GUI Toolkit.
+**
+** This file may be used under the terms of the GNU General
+** Public License versions 2.0 or 3.0 as published by the Free
+** Software Foundation and appearing in the files LICENSE.GPL2
+** and LICENSE.GPL3 included in the packaging of this file.
+** Alternatively you may (at your option) use any later version
+** of the GNU General Public License if such license has been
+** publicly approved by Trolltech ASA (or its successors, if any)
+** and the KDE Free TQt Foundation.
+**
+** Please review the following information to ensure GNU General
+** Public Licensing retquirements will be met:
+** http://trolltech.com/products/qt/licenses/licensing/opensource/.
+** If you are unsure which license is appropriate for your use, please
+** review the following information:
+** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
+** or contact the sales department at [email protected].
+**
+** This file may be used under the terms of the Q Public License as
+** defined by Trolltech ASA and appearing in the file LICENSE.TQPL
+** included in the packaging of this file. Licensees holding valid TQt
+** Commercial licenses may use this file in accordance with the TQt
+** Commercial License Agreement provided with the Software.
+**
+** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
+** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
+** herein.
+**
+**********************************************************************/
+
+// Most of the code here was originally written by Serika Kurusugawa
+// a.k.a. Junji Takagi, and is included in TQt with the author's permission,
+// and the grateful thanks of the Trolltech team.
+
+/*! \class TQEucJpCodec qeucjpcodec.h
+ \reentrant
+ \ingroup i18n
+
+ \brief The TQEucJpCodec class provides conversion to and from EUC-JP character sets.
+
+ More precisely, the TQEucJpCodec class subclasses TQTextCodec to
+ provide support for EUC-JP, the main legacy encoding for Unix
+ machines in Japan.
+
+ The environment variable \c UNICODEMAP_JP can be used to fine-tune
+ TQJisCodec, TQSjisCodec and TQEucJpCodec. The \l TQJisCodec
+ documentation describes how to use this variable.
+
+ Most of the code here was written by Serika Kurusugawa,
+ a.k.a. Junji Takagi, and is included in TQt with the author's
+ permission and the grateful thanks of the Trolltech team. Here is
+ the copyright statement for that code:
+
+ \legalese
+
+ Copyright (C) 1999 Serika Kurusugawa. All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+ \list 1
+ \i Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ \i Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ \endlist
+
+ THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS".
+ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSETQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ SUCH DAMAGE.
+*/
+
+/*
+ * Copyright (C) 1999 Serika Kurusugawa, All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSETQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "qeucjpcodec.h"
+
+#ifndef QT_NO_BIG_CODECS
+
+static const uchar Esc = 0x1b;
+static const uchar Ss2 = 0x8e; // Single Shift 2
+static const uchar Ss3 = 0x8f; // Single Shift 3
+
+#define IsKana(c) (((c) >= 0xa1) && ((c) <= 0xdf))
+#define IsEucChar(c) (((c) >= 0xa1) && ((c) <= 0xfe))
+
+#define TQValidChar(u) ((u) ? TQChar((ushort)(u)) : TQChar::replacement)
+
+/*!
+ Constructs a TQEucJpCodec.
+*/
+TQEucJpCodec::TQEucJpCodec() : conv(TQJpUnicodeConv::newConverter( TQJpUnicodeConv::Default ))
+{
+}
+
+/*!
+ Destroys the codec.
+*/
+TQEucJpCodec::~TQEucJpCodec()
+{
+ delete (TQJpUnicodeConv*)conv;
+ conv = 0;
+}
+
+/*!
+ Returns 18.
+*/
+int TQEucJpCodec::mibEnum() const
+{
+ /*
+ Name: Extended_UNIX_Code_Packed_Format_for_Japanese
+ MIBenum: 18
+ Source: Standardized by OSF, UNIX International, and UNIX Systems
+ Laboratories Pacific. Uses ISO 2022 rules to select
+ code set 0: US-ASCII (a single 7-bit byte set)
+ code set 1: JIS X0208-1990 (a double 8-bit byte set)
+ restricted to A0-FF in both bytes
+ code set 2: Half Width Katakana (a single 7-bit byte set)
+ retquiring SS2 as the character prefix
+ code set 3: JIS X0212-1990 (a double 7-bit byte set)
+ restricted to A0-FF in both bytes
+ retquiring SS3 as the character prefix
+ Alias: csEUCPkdFmtJapanese
+ Alias: EUC-JP (preferred MIME name)
+ */
+ return 18;
+}
+
+/*!
+ \reimp
+*/
+TQCString TQEucJpCodec::fromUnicode(const TQString& uc, int& lenInOut) const
+{
+ int l = TQMIN((int)uc.length(),lenInOut);
+ int rlen = l*3+1;
+ TQCString rstr(rlen);
+ uchar* cursor = (uchar*)rstr.data();
+ for (int i=0; i<l; i++) {
+ TQChar 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) {
+ if (j < 0x80) {
+ // JIS X 0201 Latin ?
+ *cursor++ = j;
+ } else {
+ // JIS X 0201 Kana
+ *cursor++ = Ss2;
+ *cursor++ = j;
+ }
+ } else if ((j = conv->unicodeToJisx0208(ch.row(), ch.cell())) != 0) {
+ // JIS X 0208
+ *cursor++ = (j >> 8) | 0x80;
+ *cursor++ = (j & 0xff) | 0x80;
+ } else if ((j = conv->unicodeToJisx0212(ch.row(), ch.cell())) != 0) {
+ // JIS X 0212
+ *cursor++ = Ss3;
+ *cursor++ = (j >> 8) | 0x80;
+ *cursor++ = (j & 0xff) | 0x80;
+ } else {
+ // Error
+ *cursor++ = '?'; // unknown char
+ }
+ }
+ lenInOut = cursor - (uchar*)rstr.data();
+ rstr.truncate(lenInOut);
+ return rstr;
+}
+
+/*!
+ \reimp
+*/
+TQString TQEucJpCodec::toUnicode(const char* chars, int len) const
+{
+ TQString result;
+ for (int i=0; i<len; i++) {
+ uchar ch = chars[i];
+ if ( ch < 0x80 ) {
+ // ASCII
+ result += TQChar(ch);
+ } else if ( ch == Ss2 ) {
+ // JIS X 0201 Kana
+ if ( i < len-1 ) {
+ uchar c2 = chars[++i];
+ if ( IsKana(c2) ) {
+ uint u = conv->jisx0201ToUnicode(c2);
+ result += TQValidChar(u);
+ } else {
+ i--;
+ result += TQChar::replacement;
+ }
+ }
+ } else if ( ch == Ss3 ) {
+ // JIS X 0212
+ if ( i < len-1 ) {
+ uchar c2 = chars[++i];
+ if ( IsEucChar(c2) ) {
+ if ( i < len-1 ) {
+ uchar c3 = chars[++i];
+ if ( IsEucChar(c3) ) {
+ uint u = conv->jisx0212ToUnicode(c2 & 0x7f, c3 & 0x7f);
+ result += TQValidChar(u);
+ } else {
+ i--;
+ result += TQChar::replacement;
+ }
+ } else {
+ result += TQChar::replacement;
+ }
+ } else {
+ i--;
+ result += TQChar::replacement;
+ }
+ } else {
+ result += TQChar::replacement;
+ }
+ } else if ( IsEucChar(ch) ) {
+ // JIS X 0208
+ if ( i < len-1 ) {
+ uchar c2 = chars[++i];
+ if ( IsEucChar(c2) ) {
+ uint u = conv->jisx0208ToUnicode(ch & 0x7f, c2 & 0x7f);
+ result += TQValidChar(u);
+ } else {
+ i--;
+ result += TQChar::replacement;
+ }
+ } else {
+ result += TQChar::replacement;
+ }
+ } else {
+ // Invalid
+ result += TQChar::replacement;
+ }
+ }
+ return result;
+}
+
+/*!
+ \reimp
+*/
+const char* TQEucJpCodec::name() const
+{
+ return "eucJP";
+}
+
+/*!
+ Returns the codec's mime name.
+*/
+const char* TQEucJpCodec::mimeName() const
+{
+ return "EUC-JP";
+}
+
+/*!
+ \reimp
+*/
+int TQEucJpCodec::heuristicNameMatch(const char* hint) const
+{
+ int score = 0;
+ bool ja = FALSE;
+ if (qstrnicmp(hint, "ja_JP", 5) == 0 || qstrnicmp(hint, "japan", 5) == 0) {
+ score += 3;
+ ja = TRUE;
+ } else if (qstrnicmp(hint, "ja", 2) == 0) {
+ score += 2;
+ ja = TRUE;
+ }
+ const char *p;
+ if (ja) {
+ p = strchr(hint, '.');
+ if (p == 0) {
+ return score;
+ }
+ p++;
+ } else {
+ p = hint;
+ }
+ if (p) {
+ if ((qstricmp(p, "AJEC") == 0) ||
+ (qstricmp(p, "eucJP") == 0) ||
+ (qstricmp(p, "ujis") == 0) ||
+ (simpleHeuristicNameMatch(p, "eucJP") > 0) ||
+ (simpleHeuristicNameMatch(p, "x-euc-jp") > 0)) {
+ return score + 4;
+ }
+ // there exists ja_JP.EUC, ko_KR.EUC, zh_CN.EUC and zh_TW.EUC
+ // so "euc" may or may not be Japanese EUC.
+ if (qstricmp(p, "euc") == 0 && ja) {
+ return score + 4;
+ }
+ }
+ return TQTextCodec::heuristicNameMatch(hint);
+}
+
+/*!
+ \reimp
+*/
+int TQEucJpCodec::heuristicContentMatch(const char* chars, int len) const
+{
+ int score = 0;
+ for (int i=0; i<len; i++) {
+ uchar ch = chars[i];
+ // No nulls allowed.
+ if ( !ch || ch == Esc )
+ return -1;
+ if ( ch < 32 && ch != '\t' && ch != '\n' && ch != '\r' ) {
+ // Suspicious
+ if ( score )
+ score--;
+ } else if ( ch < 0x80 ) {
+ // Inconclusive
+ score++;
+ } else if ( ch == Ss2 ) {
+ // JIS X 0201 Kana
+ if ( i < len-1 ) {
+ uchar c2 = chars[++i];
+ if ( !IsKana(c2) )
+ return -1;
+ score+=2;
+ }
+ score++;
+ } else if ( ch == Ss3 ) {
+ // JIS X 0212
+ if ( i < len-1 ) {
+ uchar c2 = chars[++i];
+ if ( !IsEucChar(c2) )
+ return -1;
+ if ( i < len-1 ) {
+ uchar c3 = chars[++i];
+ if ( !IsEucChar(c3) )
+ return -1;
+ score++;
+ }
+ score+=2;
+ }
+ score++;
+ } else if ( IsEucChar(ch) ) {
+ // JIS X 0208-1990
+ if ( i < len-1 ) {
+ uchar c2 = chars[++i];
+ if ( !IsEucChar(c2) )
+ return -1;
+ score+=2;
+ }
+ score++;
+ } else {
+ // Invalid
+ return -1;
+ }
+ }
+ return score;
+}
+
+class TQEucJpDecoder : public TQTextDecoder {
+ uchar buf[2];
+ int nbuf;
+ const TQJpUnicodeConv * const conv;
+public:
+ TQEucJpDecoder(const TQJpUnicodeConv *c) : nbuf(0), conv(c)
+ {
+ }
+
+ TQString toUnicode(const char* chars, int len)
+ {
+ TQString result;
+ for (int i=0; i<len; i++) {
+ uchar ch = chars[i];
+ switch (nbuf) {
+ case 0:
+ if ( ch < 0x80 ) {
+ // ASCII
+ result += TQChar(ch);
+ } else if ( ch == Ss2 || ch == Ss3 ) {
+ // JIS X 0201 Kana or JIS X 0212
+ buf[0] = ch;
+ nbuf = 1;
+ } else if ( IsEucChar(ch) ) {
+ // JIS X 0208
+ buf[0] = ch;
+ nbuf = 1;
+ } else {
+ // Invalid
+ result += TQChar::replacement;
+ }
+ break;
+ case 1:
+ if ( buf[0] == Ss2 ) {
+ // JIS X 0201 Kana
+ if ( IsKana(ch) ) {
+ uint u = conv->jisx0201ToUnicode(ch);
+ result += TQValidChar(u);
+ } else {
+ result += TQChar::replacement;
+ }
+ nbuf = 0;
+ } else if ( buf[0] == Ss3 ) {
+ // JIS X 0212-1990
+ if ( IsEucChar(ch) ) {
+ buf[1] = ch;
+ nbuf = 2;
+ } else {
+ // Error
+ result += TQChar::replacement;
+ nbuf = 0;
+ }
+ } else {
+ // JIS X 0208-1990
+ if ( IsEucChar(ch) ) {
+ uint u = conv->jisx0208ToUnicode(buf[0] & 0x7f, ch & 0x7f);
+ result += TQValidChar(u);
+ } else {
+ // Error
+ result += TQChar::replacement;
+ }
+ nbuf = 0;
+ }
+ break;
+ case 2:
+ // JIS X 0212
+ if ( IsEucChar(ch) ) {
+ uint u = conv->jisx0212ToUnicode(buf[1] & 0x7f, ch & 0x7f);
+ result += TQValidChar(u);
+ } else {
+ result += TQChar::replacement;
+ }
+ nbuf = 0;
+ }
+ }
+ return result;
+ }
+};
+
+/*!
+ \reimp
+*/
+TQTextDecoder* TQEucJpCodec::makeDecoder() const
+{
+ return new TQEucJpDecoder(conv);
+}
+
+#endif