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/*!

    \group codecs

    \title Codecs

    \ingroup groups

    \brief Codec support in Qt.

    These codecs provide facilities for conversion between Unicode and

    specific text encodings.

    \generatelist{related}

*/

/*!

    \page codec-big5.html

    \title Big5 Text Codec

    \ingroup codecs

    The Big5 codec provides conversion to and from the Big5 encoding.

    The code was originally contributed by Ming-Che Chuang

    \<mingche@cobra.ee.ntu.edu.tw\> for the Big-5+ encoding, and was

    included in Qt with the author's permission, and the grateful

    thanks of the Qt team. (Note: Ming-Che's code is QPL'd, as

    per an mail to qt-info@nokia.com.)

    However, since Big-5+ was never formally approved, and was never

    used by anyone, the Taiwan Free Software community and the Li18nux

    Big5 Standard Subgroup agree that the de-facto standard Big5-ETen

    (zh_TW.Big5 or zh_TW.TW-Big5) be used instead.

    The Big5 is currently implemented as a pure subset of the

    Big5-HKSCS codec, so more fine-tuning is needed to make it

    identical to the standard Big5 mapping as determined by

    Li18nux-Big5.  See \l{http://www.autrijus.org/xml/} for the draft

    Big5 (2002) standard.

    James Su \<suzhe@turbolinux.com.cn\> \<suzhe@gnuchina.org\>

    generated the Big5-HKSCS-to-Unicode tables with a very

    space-efficient algorithm. He generously donated his code to glibc

    in May 2002.  Subsequently, James has kindly allowed Anthony Fok

    \<anthony@thizlinux.com\> \<foka@debian.org\> to adapt the code

    for Qt.

    \legalese

    Copyright (C) 2000  Ming-Che Chuang \BR

    Copyright (C) 2002  James Su, Turbolinux Inc. \BR

    Copyright (C) 2002  Anthony Fok, ThizLinux Laboratory Ltd.

    Redistribution and use in source and binary forms, with or without

    modification, are permitted provided that the following conditions

    are met:

    \list 1

    \o Redistributions of source code must retain the above copyright

       notice, this list of conditions and the following disclaimer.

    \o 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.

    \endlegalese

*/

/*!

    \page codec-big5hkscs.html

    \title Big5-HKSCS Text Codec

    \ingroup codecs

    The Big5-HKSCS codec provides conversion to and from the

    Big5-HKSCS encoding.

    The codec grew out of the QBig5Codec originally contributed by

    Ming-Che Chuang \<mingche@cobra.ee.ntu.edu.tw\>.  James Su

    \<suzhe@turbolinux.com.cn\> \<suzhe@gnuchina.org\> and Anthony Fok

    \<anthony@thizlinux.com\> \<foka@debian.org\> implemented HKSCS-1999

    QBig5hkscsCodec for Qt-2.3.x, but it was too late in Qt development

    schedule to be officially included in the Qt-2.3.x series.

    Wu Yi \<wuyi@hancom.com\> ported the HKSCS-1999 QBig5hkscsCodec to

    Qt-3.0.1 in March 2002.

    With the advent of the new HKSCS-2001 standard, James Su

    \<suzhe@turbolinux.com.cn\> \<suzhe@gnuchina.org\> generated the

    Big5-HKSCS<->Unicode tables with a very space-efficient algorithm.

    He generously donated his code to glibc in May 2002.  Subsequently,

    James has generously allowed Anthony Fok to adapt the code for

    Qt-3.0.5.

    Currently, the Big5-HKSCS tables are generated from the following

    sources, and with the Euro character added:

    \list 1

    \o \l{http://www.microsoft.com/typography/unicode/950.txt}

    \o \l{http://www.info.gov.hk/digital21/chi/hkscs/download/big5-iso.txt}

    \o \l{http://www.info.gov.hk/digital21/chi/hkscs/download/big5cmp.txt}

    \endlist

    There may be more fine-tuning to the QBig5hkscsCodec to maximize its

    compatibility with the standard Big5 (2002) mapping as determined by

    Li18nux Big5 Standard Subgroup.  See \l{http://www.autrijus.org/xml/}

    for the various Big5 CharMapML tables.

    \legalese

    Copyright (C) 2000  Ming-Che Chuang \BR

    Copyright (C) 2001, 2002  James Su, Turbolinux Inc. \BR

    Copyright (C) 2002  WU Yi, HancomLinux Inc. \BR

    Copyright (C) 2001, 2002  Anthony Fok, ThizLinux Laboratory Ltd.

    Redistribution and use in source and binary forms, with or without

    modification, are permitted provided that the following conditions

    are met:

    \list 1

    \o Redistributions of source code must retain the above copyright

       notice, this list of conditions and the following disclaimer.

    \o 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.

    \endlegalese

*/

/*!

    \page codec-eucjp.html

    \title EUC-JP Text Codec

    \ingroup codecs

    The EUC-JP codec provides conversion to and from EUC-JP, the main

    legacy encoding for Unix machines in Japan.

    The environment variable \c UNICODEMAP_JP can be used to

    fine-tune the JIS, Shift-JIS, and EUC-JP codecs. The \l{ISO

    2022-JP (JIS) Text Codec} 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 Qt with the author's

    permission and the grateful thanks of the Qt 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

    \o Redistributions of source code must retain the above copyright

       notice, this list of conditions and the following disclaimer.

    \o 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 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.

    \endlegalese

*/

/*!

    \page codec-euckr.html

    \title EUC-KR Text Codec

    \ingroup codecs

    The EUC-KR codec provides conversion to and from EUC-KR, KR, the

    main legacy encoding for Unix machines in Korea.

    It was largely written by Mizi Research Inc. Here is the

    copyright statement for the code as it was at the point of

    contribution. The subsequent modifications are covered by

    the usual copyright for Qt.

    \legalese

    Copyright (C) 1999-2000 Mizi Research Inc. 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

    \o Redistributions of source code must retain the above copyright

       notice, this list of conditions and the following disclaimer.

    \o 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.

    \endlegalese

*/

/*!

    \page codec-gbk.html

    \title GBK Text Codec

    \ingroup codecs

    The GBK codec provides conversion to and from the Chinese

    GB18030/GBK/GB2312 encoding.

    GBK, formally the Chinese Internal Code Specification, is a commonly

    used extension of GB 2312-80.  Microsoft Windows uses it under the

    name codepage 936.

    GBK has been superseded by the new Chinese national standard

    GB 18030-2000, which added a 4-byte encoding while remaining

    compatible with GB2312 and GBK.  The new GB 18030-2000 may be described

    as a special encoding of Unicode 3.x and ISO-10646-1.

    Special thanks to charset gurus Markus Scherer (IBM),

    Dirk Meyer (Adobe Systems) and Ken Lunde (Adobe Systems) for publishing

    an excellent GB 18030-2000 summary and specification on the Internet.

    Some must-read documents are:

    \list

    \o \l{ftp://ftp.oreilly.com/pub/examples/nutshell/cjkv/pdf/GB18030_Summary.pdf}

    \o \l{http://oss.software.ibm.com/cvs/icu/~checkout~/charset/source/gb18030/gb18030.html}

    \o \l{http://oss.software.ibm.com/cvs/icu/~checkout~/charset/data/xml/gb-18030-2000.xml}

    \endlist

    The GBK codec was contributed to Qt by

    Justin Yu \<justiny@turbolinux.com.cn\> and

    Sean Chen \<seanc@turbolinux.com.cn\>.  They may also be reached at

    Yu Mingjian \<yumj@sun.ihep.ac.cn\>, \<yumingjian@china.com\>

    Chen Xiangyang \<chenxy@sun.ihep.ac.cn\>

    The GB18030 codec Qt functions were contributed to Qt by

    James Su \<suzhe@gnuchina.org\>, \<suzhe@turbolinux.com.cn\>

    who pioneered much of GB18030 development on GNU/Linux systems.

    The GB18030 codec was contributed to Qt by

    Anthony Fok \<anthony@thizlinux.com\>, \<foka@debian.org\>

    using a Perl script to generate C++ tables from gb-18030-2000.xml

    while merging contributions from James Su, Justin Yu and Sean Chen.

    A copy of the source Perl script is available at

    \l{http://people.debian.org/~foka/gb18030/gen-qgb18030codec.pl}

    The copyright notice for their code follows:

    \legalese

    Copyright (C) 2000 TurboLinux, Inc.  Written by Justin Yu and Sean Chen. \BR

    Copyright (C) 2001, 2002 Turbolinux, Inc.  Written by James Su. \BR

    Copyright (C) 2001, 2002 ThizLinux Laboratory Ltd.  Written by Anthony Fok.

    Redistribution and use in source and binary forms, with or without

    modification, are permitted provided that the following conditions

    are met:

    \list 1

    \o Redistributions of source code must retain the above copyright

       notice, this list of conditions and the following disclaimer.

    \o 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.

    \endlegalese

*/

/*!

    \page codecs-jis.html

    \title ISO 2022-JP (JIS) Text Codec

    \ingroup codecs

    The JIS codec provides conversion to and from ISO 2022-JP.

    The environment variable \c UNICODEMAP_JP can be used to

    fine-tune the JIS, Shift-JIS, and EUC-JP codecs. 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

    \o "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 Unicode 1.1.)

    \o "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.

    \o "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.

    \o "open-19970715-ascii" ("open-ascii" for convenience) for

    JISX0221-ASCII style. This is used when 0x5c is treated as REVERSE

    SOLIDUS.

    \o "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.

    \o "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 \c {unicode-0.9,

    nec-vdc}. (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 Qt with the author's

    permission and the grateful thanks of the Qt 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

    \o Redistributions of source code must retain the above copyright

       notice, this list of conditions and the following disclaimer.

    \o 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 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.

    \endlegalese

*/

/*!

    \page codec-sjis.html

    \title Shift-JIS Text Codec

    \ingroup codecs

    The Shift-JIS codec provides conversion to and from Shift-JIS, an

    encoding of JIS X 0201 Latin, JIS X 0201 Kana and JIS X 0208.

    The environment variable \c UNICODEMAP_JP can be used to

    fine-tune the codec. The \l{ISO 2022-JP (JIS) Text Codec}

    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 Qt with the author's permission

    and the grateful thanks of the Qt team. Here is the

    copyright statement for the code as it was at the point of

    contribution. The subsequent modifications are covered by

    the usual copyright for Qt.

    \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

    \o Redistributions of source code must retain the above copyright

       notice, this list of conditions and the following disclaimer.

    \o 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 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.

    \endlegalese

*/

/*!

    \page codec-tscii.html

    \title TSCII Text Codec

    \ingroup codecs

    The TSCII codec 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 was written by Hans Petter Bieker and is

    included in Qt with the author's permission and the grateful

    thanks of the Qt team. Here is the copyright statement for

    the code as it was at the point of contribution. The

    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

    \o Redistributions of source code must retain the above copyright

       notice, this list of conditions and the following disclaimer.