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authorTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-11-08 12:31:36 -0600
committerTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-11-08 12:31:36 -0600
commitd796c9dd933ab96ec83b9a634feedd5d32e1ba3f (patch)
tree6e3dcca4f77e20ec8966c666aac7c35bd4704053 /src/codecs/qjiscodec.cpp
downloadtqt3-d796c9dd933ab96ec83b9a634feedd5d32e1ba3f.tar.gz
tqt3-d796c9dd933ab96ec83b9a634feedd5d32e1ba3f.zip
Test conversion to TQt3 from Qt3 8c6fc1f8e35fd264dd01c582ca5e7549b32ab731
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+/****************************************************************************
+**
+** Implementation of TQJisCodec 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 sales@trolltech.com.
+**
+** 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 TQJisCodec
+ \reentrant
+ \ingroup i18n
+
+ \brief The TQJisCodec class provides conversion to and from JIS character sets.
+
+ More precisely, the TQJisCodec class subclasses TQTextCodec to
+ provide support for JIS X 0201 Latin, JIS X 0201 Kana, JIS X 0208
+ and JIS X 0212.
+
+ The environment variable UNICODEMAP_JP can be used to fine-tune
+ TQJisCodec, TQSjisCodec and TQEucJpCodec. The mapping names are as for
+ the Japanese XML working group's \link
+ http://www.y-adagio.com/public/standards/tr_xml_jpf/toc.htm XML
+ Japanese Profile\endlink, because it names and explains all the
+ widely used mappings. Here are brief descriptions, written by
+ Serika Kurusugawa:
+
+ \list
+
+ \i "unicode-0.9" or "unicode-0201" for Unicode style. This assumes
+ JISX0201 for 0x00-0x7f. (0.9 is a table version of jisx02xx mapping
+ used for Uniocde spec version 1.1.)
+
+ \i "unicode-ascii" This assumes US-ASCII for 0x00-0x7f; some
+ chars (JISX0208 0x2140 and JISX0212 0x2237) are different from
+ Unicode 1.1 to avoid conflict.
+
+ \i "open-19970715-0201" ("open-0201" for convenience) or
+ "jisx0221-1995" for JISX0221-JISX0201 style. JIS X 0221 is JIS
+ version of Unicode, but a few chars (0x5c, 0x7e, 0x2140, 0x216f,
+ 0x2131) are different from Unicode 1.1. This is used when 0x5c is
+ treated as YEN SIGN.
+
+ \i "open-19970715-ascii" ("open-ascii" for convenience) for
+ JISX0221-ASCII style. This is used when 0x5c is treated as REVERSE
+ SOLIDUS.
+
+ \i "open-19970715-ms" ("open-ms" for convenience) or "cp932" for
+ Microsoft Windows style. Windows Code Page 932. Some chars (0x2140,
+ 0x2141, 0x2142, 0x215d, 0x2171, 0x2172) are different from Unicode
+ 1.1.
+
+ \i "jdk1.1.7" for Sun's JDK style. Same as Unicode 1.1, except that
+ JIS 0x2140 is mapped to UFF3C. Either ASCII or JISX0201 can be used
+ for 0x00-0x7f.
+
+ \endlist
+
+ In addition, the extensions "nec-vdc", "ibm-vdc" and "udc" are
+ supported.
+
+ For example, if you want to use Unicode style conversion but with
+ NEC's extension, set \c UNICODEMAP_JP to
+ <nobr>\c {unicode-0.9, nec-vdc}.</nobr> (You will probably
+ need to quote that in a shell command.)
+
+ 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.
+*/
+
+#include "qjiscodec.h"
+
+#ifndef QT_NO_BIG_CODECS
+
+static const uchar Esc = 0x1b;
+static const uchar So = 0x0e; // Shift Out
+static const uchar Si = 0x0f; // Shift In
+
+static const uchar ReverseSolidus = 0x5c;
+static const uchar YenSign = 0x5c;
+static const uchar Tilde = 0x7e;
+static const uchar Overline = 0x7e;
+
+#define IsKana(c) (((c) >= 0xa1) && ((c) <= 0xdf))
+#define IsJisChar(c) (((c) >= 0x21) && ((c) <= 0x7e))
+
+#define TQValidChar(u) ((u) ? TQChar((ushort)(u)) : TQChar::replacement)
+
+enum Iso2022State{ Ascii, MinState = Ascii,
+ JISX0201_Latin, JISX0201_Kana,
+ JISX0208_1978, JISX0208_1983,
+ JISX0212, MaxState = JISX0212,
+ UnknownState };
+
+static const char Esc_CHARS[] = "()*+-./";
+
+static const char Esc_Ascii[] = {Esc, '(', 'B', 0 };
+static const char Esc_JISX0201_Latin[] = {Esc, '(', 'J', 0 };
+static const char Esc_JISX0201_Kana[] = {Esc, '(', 'I', 0 };
+static const char Esc_JISX0208_1978[] = {Esc, '$', '@', 0 };
+static const char Esc_JISX0208_1983[] = {Esc, '$', 'B', 0 };
+static const char Esc_JISX0212[] = {Esc, '$', '(', 'D', 0 };
+static const char * const Esc_SEQ[] = { Esc_Ascii,
+ Esc_JISX0201_Latin,
+ Esc_JISX0201_Kana,
+ Esc_JISX0208_1978,
+ Esc_JISX0208_1983,
+ Esc_JISX0212 };
+
+/*! \internal */
+TQJisCodec::TQJisCodec() : conv(TQJpUnicodeConv::newConverter(TQJpUnicodeConv::Default))
+{
+}
+
+
+/*! \internal */
+TQJisCodec::~TQJisCodec()
+{
+ delete (TQJpUnicodeConv*)conv;
+ conv = 0;
+}
+
+
+/*! \internal */
+int TQJisCodec::mibEnum() const
+{
+ /*
+ Name: JIS_Encoding
+ MIBenum: 16
+ Source: JIS X 0202-1991. Uses ISO 2022 escape sequences to
+ shift code sets as documented in JIS X 0202-1991.
+ Alias: csJISEncoding
+ */
+ return 16;
+}
+
+/*! \internal */
+TQCString TQJisCodec::fromUnicode(const TQString& uc, int& lenInOut) const
+{
+ int l = TQMIN((int)uc.length(),lenInOut);
+ TQCString result;
+ Iso2022State state = Ascii;
+ Iso2022State prev = Ascii;
+ for (int i=0; i<l; i++) {
+ TQChar ch = uc[i];
+ uint j;
+ if ( ch.row() == 0x00 && ch.cell() < 0x80 ) {
+ // Ascii
+ if (state != JISX0201_Latin ||
+ ch.cell() == ReverseSolidus || ch.cell() == Tilde) {
+ state = Ascii;
+ }
+ j = ch.cell();
+ } else if ((j = conv->unicodeToJisx0201(ch.row(), ch.cell())) != 0) {
+ if (j < 0x80) {
+ // JIS X 0201 Latin
+ if (state != Ascii ||
+ ch.cell() == YenSign || ch.cell() == Overline) {
+ state = JISX0201_Latin;
+ }
+ } else {
+ // JIS X 0201 Kana
+ state = JISX0201_Kana;
+ j &= 0x7f;
+ }
+ } else if ((j = conv->unicodeToJisx0208(ch.row(), ch.cell())) != 0) {
+ // JIS X 0208
+ state = JISX0208_1983;
+ } else if ((j = conv->unicodeToJisx0212(ch.row(), ch.cell())) != 0) {
+ // JIS X 0212
+ state = JISX0212;
+ } else {
+ // Invalid
+ state = UnknownState;
+ j = '?';
+ }
+ if (state != prev) {
+ if (state == UnknownState) {
+ result += Esc_Ascii;
+ } else {
+ result += Esc_SEQ[state - MinState];
+ }
+ prev = state;
+ }
+ if (j < 0x0100) {
+ result += j & 0xff;
+ } else {
+ result += (j >> 8) & 0xff;
+ result += j & 0xff;
+ }
+ }
+ if (prev != Ascii) {
+ result += Esc_Ascii;
+ }
+ lenInOut = result.length();
+ return result;
+}
+
+/*! \internal */
+TQString TQJisCodec::toUnicode(const char* chars, int len) const
+{
+ TQString result;
+ Iso2022State state = Ascii, prev = Ascii;
+ for (int i=0; i<len; i++) {
+ uchar ch = chars[i];
+ if ( ch == Esc ) {
+ // Escape sequence
+ state = UnknownState;
+ if ( i < len-1 ) {
+ uchar c2 = chars[++i];
+ if (c2 == '$') {
+ if ( i < len-1 ) {
+ uchar c3 = chars[++i];
+ if (strchr(Esc_CHARS, c3)) {
+ if ( i < len-1 ) {
+ uchar c4 = chars[++i];
+ if (c4 == '(') {
+ switch (c4) {
+ case 'D':
+ state = JISX0212; // Esc $ ( D
+ break;
+ }
+ }
+ }
+ } else {
+ switch (c3) {
+ case '@':
+ state = JISX0208_1978; // Esc $ @
+ break;
+ case 'B':
+ state = JISX0208_1983; // Esc $ B
+ break;
+ }
+ }
+ }
+ } else {
+ if (strchr(Esc_CHARS, c2)) {
+ if ( i < len-1 ) {
+ uchar c3 = chars[++i];
+ if (c2 == '(') {
+ switch (c3) {
+ case 'B':
+ state = Ascii; // Esc ( B
+ break;
+ case 'I':
+ state = JISX0201_Kana; // Esc ( I
+ break;
+ case 'J':
+ state = JISX0201_Latin; // Esc ( J
+ break;
+ }
+ }
+ }
+ }
+ }
+ }
+ } else if (ch == So) {
+ // Shift out
+ prev = state;
+ state = JISX0201_Kana;
+ } else if (ch == Si) {
+ // Shift in
+ if (prev == Ascii || prev == JISX0201_Latin) {
+ state = prev;
+ } else {
+ state = Ascii;
+ }
+ } else {
+ uint u;
+ switch (state) {
+ case Ascii:
+ if (ch < 0x80) {
+ result += TQChar(ch);
+ break;
+ }
+ /* fall throught */
+ case JISX0201_Latin:
+ u = conv->jisx0201ToUnicode(ch);
+ result += TQValidChar(u);
+ break;
+ case JISX0201_Kana:
+ u = conv->jisx0201ToUnicode(ch | 0x80);
+ result += TQValidChar(u);
+ break;
+ case JISX0208_1978:
+ case JISX0208_1983:
+ if ( i < len-1 ) {
+ uchar c2 = chars[++i];
+ u = conv->jisx0208ToUnicode(ch & 0x7f, c2 & 0x7f);
+ result += TQValidChar(u);
+ }
+ break;
+ case JISX0212:
+ if ( i < len-1 ) {
+ uchar c2 = chars[++i];
+ u = conv->jisx0212ToUnicode(ch & 0x7f, c2 & 0x7f);
+ result += TQValidChar(u);
+ }
+ break;
+ default:
+ result += TQChar::replacement;
+ break;
+ }
+ }
+ }
+ return result;
+}
+
+/*! \internal */
+const char* TQJisCodec::name() const
+{
+ return "JIS7";
+}
+
+/*!
+ Returns the codec's mime name.
+*/
+const char* TQJisCodec::mimeName() const
+{
+ return "ISO-2022-JP";
+}
+
+/*! \internal */
+int TQJisCodec::heuristicNameMatch(const char* hint) const
+{
+ if ( qstrnicmp( hint, "ISO-2022-JP", 11 ) == 0 )
+ return 10000;
+ if ( simpleHeuristicNameMatch( "ISO-2022-JP-2", hint ) > 0 )
+ return 10;
+
+ 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 - 2;
+ }
+ p++;
+ } else {
+ p = hint;
+ }
+ if (p) {
+ if ((qstricmp(p, "JIS") == 0) ||
+ (qstricmp(p, "JIS7") == 0) ||
+ (simpleHeuristicNameMatch("ISO-2022-JP", p) > 0)) {
+ return score + 4;
+ }
+ }
+ return TQTextCodec::heuristicNameMatch(hint);
+}
+
+/*! \internal */
+int TQJisCodec::heuristicContentMatch(const char* chars, int len) const
+{
+ int score = 0;
+ Iso2022State state = Ascii, prev = Ascii;
+ for (int i=0; i<len; i++) {
+ uchar ch = chars[i];
+ // No nulls allowed.
+ if ( !ch )
+ return -1;
+ if ( ch == Esc ) {
+ // Escape sequence
+ state = UnknownState;
+ if ( i < len-1 ) {
+ uchar c2 = chars[++i];
+ if (c2 == '$') {
+ if ( i < len-1 ) {
+ uchar c3 = chars[++i];
+ if (strchr(Esc_CHARS, c3)) {
+ if ( i < len-1 ) {
+ uchar c4 = chars[++i];
+ if (c4 == '(') {
+ switch (c4) {
+ case 'D':
+ state = JISX0212; // Esc $ ( D
+ score++;
+ break;
+ }
+ }
+ }
+ score++;
+ } else {
+ switch (c3) {
+ case '@':
+ state = JISX0208_1978; // Esc $ @
+ score++;
+ break;
+ case 'B':
+ state = JISX0208_1983; // Esc $ B
+ score++;
+ break;
+ }
+ }
+ }
+ score++;
+ } else {
+ if (strchr(Esc_CHARS, c2)) {
+ if ( i < len-1 ) {
+ uchar c3 = chars[++i];
+ if (c2 == '(') {
+ switch (c3) {
+ case 'B':
+ state = Ascii; // Esc ( B
+ score++;
+ break;
+ case 'I':
+ state = JISX0201_Kana; // Esc ( I
+ score++;
+ break;
+ case 'J':
+ state = JISX0201_Latin; // Esc ( J
+ score++;
+ break;
+ }
+ }
+ }
+ score++;
+ }
+ }
+ }
+ if ( state == UnknownState ) {
+ return -1;
+ }
+ score++;
+ } else if (ch == So) {
+ // Shift out
+ prev = state;
+ state = JISX0201_Kana;
+ score++;
+ } else if (ch == Si) {
+ // Shift in
+ if (prev == Ascii || prev == JISX0201_Latin) {
+ state = prev;
+ } else {
+ state = Ascii;
+ }
+ score++;
+ } else {
+ switch (state) {
+ case Ascii:
+ case JISX0201_Latin:
+ if ( ch < 32 && ch != '\t' && ch != '\n' && ch != '\r' ) {
+ // Suspicious
+ if ( score )
+ score--;
+ } else {
+ // Inconclusive
+ }
+ break;
+ case JISX0201_Kana:
+ if ( !IsKana(ch | 0x80) ) {
+ return -1;
+ }
+ score++;
+ break;
+ case JISX0208_1978:
+ case JISX0208_1983:
+ case JISX0212:
+ if ( !IsJisChar(ch) ) {
+ // Invalid
+ return -1;
+ }
+ if ( i < len-1 ) {
+ uchar c2 = chars[++i];
+ if ( !IsJisChar(c2) ) {
+ // Invalid
+ return -1;
+ }
+ score++;
+ }
+ score++;
+ break;
+ default:
+ return -1;
+ }
+ }
+ }
+ return score;
+}
+
+class TQJisDecoder : public TQTextDecoder {
+ uchar buf[4];
+ int nbuf;
+ Iso2022State state, prev;
+ bool esc;
+ const TQJpUnicodeConv * const conv;
+public:
+ TQJisDecoder(const TQJpUnicodeConv *c) : nbuf(0), state(Ascii), prev(Ascii), esc(FALSE), conv(c)
+ {
+ }
+
+ TQString toUnicode(const char* chars, int len)
+ {
+ TQString result;
+ for (int i=0; i<len; i++) {
+ uchar ch = chars[i];
+ if (esc) {
+ // Escape sequence
+ state = UnknownState;
+ switch (nbuf) {
+ case 0:
+ if (ch == '$' || strchr(Esc_CHARS, ch)) {
+ buf[nbuf++] = ch;
+ } else {
+ nbuf = 0;
+ esc = FALSE;
+ }
+ break;
+ case 1:
+ if (buf[0] == '$') {
+ if (strchr(Esc_CHARS, ch)) {
+ buf[nbuf++] = ch;
+ } else {
+ switch (ch) {
+ case '@':
+ state = JISX0208_1978; // Esc $ @
+ break;
+ case 'B':
+ state = JISX0208_1983; // Esc $ B
+ break;
+ }
+ nbuf = 0;
+ esc = FALSE;
+ }
+ } else {
+ if (buf[0] == '(') {
+ switch (ch) {
+ case 'B':
+ state = Ascii; // Esc ( B
+ break;
+ case 'I':
+ state = JISX0201_Kana; // Esc ( I
+ break;
+ case 'J':
+ state = JISX0201_Latin; // Esc ( J
+ break;
+ }
+ }
+ nbuf = 0;
+ esc = FALSE;
+ }
+ break;
+ case 2:
+ if (buf[1] == '(') {
+ switch (ch) {
+ case 'D':
+ state = JISX0212; // Esc $ ( D
+ break;
+ }
+ }
+ nbuf = 0;
+ esc = FALSE;
+ break;
+ }
+ } else {
+ if (ch == Esc) {
+ // Escape sequence
+ nbuf = 0;
+ esc = TRUE;
+ } else if (ch == So) {
+ // Shift out
+ prev = state;
+ state = JISX0201_Kana;
+ nbuf = 0;
+ } else if (ch == Si) {
+ // Shift in
+ if (prev == Ascii || prev == JISX0201_Latin) {
+ state = prev;
+ } else {
+ state = Ascii;
+ }
+ nbuf = 0;
+ } else {
+ uint u;
+ switch (nbuf) {
+ case 0:
+ switch (state) {
+ case Ascii:
+ if (ch < 0x80) {
+ result += TQChar(ch);
+ break;
+ }
+ /* fall throught */
+ case JISX0201_Latin:
+ u = conv->jisx0201ToUnicode(ch);
+ result += TQValidChar(u);
+ break;
+ case JISX0201_Kana:
+ u = conv->jisx0201ToUnicode(ch | 0x80);
+ result += TQValidChar(u);
+ break;
+ case JISX0208_1978:
+ case JISX0208_1983:
+ case JISX0212:
+ buf[nbuf++] = ch;
+ break;
+ default:
+ result += TQChar::replacement;
+ break;
+ }
+ break;
+ case 1:
+ switch (state) {
+ case JISX0208_1978:
+ case JISX0208_1983:
+ u = conv->jisx0208ToUnicode(buf[0] & 0x7f, ch & 0x7f);
+ result += TQValidChar(u);
+ break;
+ case JISX0212:
+ u = conv->jisx0212ToUnicode(buf[0] & 0x7f, ch & 0x7f);
+ result += TQValidChar(u);
+ break;
+ default:
+ result += TQChar::replacement;
+ break;
+ }
+ nbuf = 0;
+ break;
+ }
+ }
+ }
+ }
+ return result;
+ }
+};
+
+/*! \internal */
+TQTextDecoder* TQJisCodec::makeDecoder() const
+{
+ return new TQJisDecoder(conv);
+}
+
+#endif