Revision control

++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only
++ // Qt-Security score:insignificant reason:docs
++
++ /*!
++ \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
++ 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.
++
++ \sa{Text Codecs: Big5, Big5-HKSCS}
++ */
++
++ /*!
++ \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
++ \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 the
++ for the various Big5 CharMapML tables.
++
++ \sa{Text Codecs: Big5, Big5-HKSCS}
++ */
++
++ /*!
++ \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.
++
++ \sa{Text Codec: EUC-JP}
++ */
++
++ /*!
++ \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.
++
++ \sa{Text Codec: EUC-KR}
++ */
++
++ /*!
++ \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
++ \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
++
++ \sa{Text Codec: GBK}
++ */
++
++ /*!
++ \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
++ \l{XML Japanese Profile},
++ because it names and explains all the
++ widely used mappings. Here are brief descriptions, written by
++ Serika Kurusugawa:
++
++ \list
++
++ \li "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.)
++
++ \li "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.
++
++ \li "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.
++
++ \li "open-19970715-ascii" ("open-ascii" for convenience) for
++ JISX0221-ASCII style. This is used when 0x5c is treated as REVERSE
++ SOLIDUS.
++
++ \li "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.
++
++ \li "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.
++
++ \sa{Text Codec: ISO 2022-JP (JIS)}
++ */
++
++ /*!
++ \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.
++
++ \sa{Text Codec: Shift-JIS}
++ */
++
++ /*!
++ \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 \l{Information Technology in Tamil}
++
++ Tamil uses composed Unicode which might cause some
++ problems if you are using Unicode fonts instead of TSCII fonts.
++ A Tamil codepage layout can be found on \l {Tamil Script Code}.
++
++ 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.
++
++ \sa{Text Codec: TSCII}
++ */