From bd0f3345a938b35ce6a12f6150373b0955b8dd12 Mon Sep 17 00:00:00 2001 From: Timothy Pearson Date: Sun, 10 Jul 2011 15:24:15 -0500 Subject: Add Qt3 development HEAD version --- src/codecs/qtsciicodec.cpp | 528 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 528 insertions(+) create mode 100644 src/codecs/qtsciicodec.cpp (limited to 'src/codecs/qtsciicodec.cpp') diff --git a/src/codecs/qtsciicodec.cpp b/src/codecs/qtsciicodec.cpp new file mode 100644 index 0000000..ad6a6ee --- /dev/null +++ b/src/codecs/qtsciicodec.cpp @@ -0,0 +1,528 @@ +/**************************************************************************** +** +** Implementation of QTsciiCodec class +** +** Copyright (C) 2000-2008 Trolltech ASA. All rights reserved. +** +** This file is part of the tools module of the Qt 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 Qt Foundation. +** +** Please review the following information to ensure GNU General +** Public Licensing requirements 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.QPL +** included in the packaging of this file. Licensees holding valid Qt +** Commercial licenses may use this file in accordance with the Qt +** 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 Hans Petter Bieker, +// and is included in Qt with the author's permission, and the grateful +// thanks of the Trolltech team. + +/*! \class QTsciiCodec qtsciicodec.h + \reentrant + \ingroup i18n + + \brief The QTsciiCodec class provides conversion to and from the Tamil TSCII encoding. + + TSCII, formally the Tamil Standard Code Information Interchange + specification, is a commonly used charset for Tamils. The + official page for the standard is at + \link http://www.tamil.net/tscii/ http://www.tamil.net/tscii/\endlink + + This codec uses the mapping table found at + \link http://www.geocities.com/Athens/5180/tsciiset.html + http://www.geocities.com/Athens/5180/tsciiset.html\endlink. + Tamil uses composed Unicode which might cause some + problems if you are using Unicode fonts instead of TSCII fonts. + + Most of the code here was written by Hans Petter Bieker + and is included in Qt with the author's permission and the + grateful thanks of the Trolltech team. + Here is the copyright statement for the code as it was at the + point of contribution. Trolltech's subsequent modifications + are covered by the usual copyright for Qt. + + \legalese + + Copyright (C) 2000 Hans Petter Bieker. 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'' 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 CONSEQUENTIAL + 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 "qtsciicodec.h" + +#ifndef QT_NO_CODECS + +static unsigned char qt_UnicodeToTSCII(ushort u1, ushort u2, ushort u3); +static unsigned int qt_TSCIIToUnicode(unsigned int code, uint *s); + +#define IsTSCIIChar(c) (((c) >= 0x80) && ((c) <= 0xfd)) +#define QValidChar(u) ((u) ? QChar((u)) : QChar::replacement) + +/*! \reimp */ +int QTsciiCodec::mibEnum() const +{ + /* There is no MIBEnum for TSCII now */ + return 2028; +} + +/*! \reimp */ +QCString QTsciiCodec::fromUnicode(const QString& uc, int& lenInOut) const +{ + int l = QMIN((int)uc.length(), lenInOut); + int rlen = l+1; + QCString rstr(rlen); + uchar* cursor = (uchar*)rstr.data(); + for (int i = 0; i < l; i++) { + QChar ch = uc[i]; + uchar j; + if ( ch.row() == 0x00 && ch.cell() < 0x80 ) { + // ASCII + j = ch.cell(); + } else if ((j = qt_UnicodeToTSCII(uc[i].unicode(), + uc[i + 1].unicode(), + uc[i + 2].unicode()))) { + // We have to check the combined chars first! + i += 2; + } else if ((j = qt_UnicodeToTSCII(uc[i].unicode(), + uc[i + 1].unicode(), 0))) { + i++; + } else if ((j = qt_UnicodeToTSCII(uc[i].unicode(), 0, 0))) { + } else { + // Error + j = '?'; // unknown char + } + *cursor++ = j; + } + lenInOut = cursor - (uchar*)rstr.data(); + *cursor = 0; + return rstr; +} + +/*! \reimp */ +QString QTsciiCodec::toUnicode(const char* chars, int len) const +{ + QString result; + for (int i = 0; i < len; i++) { + uchar ch = chars[i]; + if ( ch < 0x80 ) { + // ASCII + result += QChar(ch); + } else if ( IsTSCIIChar(ch) ) { + // TSCII + uint s[3]; + uint u = qt_TSCIIToUnicode(ch, s); + uint *p = s; + while ( u-- ) { + uint c = *p++; + result += QValidChar(c); + } + } else { + // Invalid + result += QChar::replacement; + } + } + + return result; +} + +/*! \reimp */ +const char* QTsciiCodec::name() const +{ + return "TSCII"; +} + +/*! \reimp */ +int QTsciiCodec::heuristicNameMatch(const char* hint) const +{ + const char *p = strchr(hint, '.'); + if (p) + p++; + else + p = hint; + if (qstricmp(p, "TSCII") == 0) + return 4; + return QTextCodec::heuristicNameMatch(hint); +} + +/*! \reimp */ +int QTsciiCodec::heuristicContentMatch(const char* chars, int len) const +{ + int score = 0; + for (int i=0; i