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RedHat 9 (Linux i386) - man page for qhebrewcodec (redhat section 3qt)

QHebrewCodec(3qt)								QHebrewCodec(3qt)

NAME
       QHebrewCodec - Conversion to and from visually ordered Hebrew

SYNOPSIS
       All the functions in this class are reentrant when Qt is built with thread support.</p>

       #include <qrtlcodec.h>

       Inherits QTextCodec.

   Public Members
       virtual const char * mimeName () const
       virtual QCString fromUnicode ( const QString & uc, int & lenInOut ) const

DESCRIPTION
       The QHebrewCodec class provides conversion to and from visually ordered Hebrew.

       Hebrew as a semitic language is written from right to left. Because older computer systems
       couldn't handle reordering a string so that the first letter appears on the right, many
       older documents were encoded in visual order, so that the first letter of a line is the
       rightmost one in the string.

       In contrast to this, Unicode defines characters to be in logical order (the order you
       would read the string). This codec tries to convert visually ordered Hebrew (8859-8) to
       Unicode. This might not always work perfectly, because reversing the bidi (bi-directional)
       algorithm that transforms from logical to visual order is non-trivial.

       Transformation from Unicode to visual Hebrew (8859-8) is done using the bidi algorithm in
       Qt, and will produce correct results, so long as the codec is given the text one whole
       paragraph at a time. Places where newlines are supposed to start can be indicated by a
       newline character ('\n'). Please be aware, that these newline characters change the
       reordering behaviour of the algorithm, as the BiDi reordering only takes place within one
       line of text, whereas linebreaks are determined in visual order.

       Visually ordered Hebrew is still used quite often in some places, mainly in email
       communication (as most email programs still don't understand logically ordered Hebrew) and
       on web pages. The use on web pages is strongly decreasing however, as there are now a few
       browsers that correctly support logically ordered Hebrew.

       This codec has the name "iso8859-8". If you don't want any bidi reordering to happen
       during conversion, use the "iso8859-8-i" codec, which assumes logical order for the 8-bit
       string.

       See also Internationalization with Qt.

MEMBER FUNCTION DOCUMENTATION
QCString QHebrewCodec::fromUnicode ( const QString & uc, int & lenInOut ) const [virtual]
       Transforms the logically ordered QString, uc, into a visually ordered string in the 8859-8
       encoding. Qt's bidi algorithm is used to perform this task. Note that newline characters
       affect the reordering, as reordering is done on a line by line basis.

       The algorithm is designed to work on whole paragraphs of text, so processing a line at a
       time may produce incorrect results. This approach is taken because the reordering of the
       contents of a particular line in a paragraph may depend on the previous line in the same
       paragraph.

       Some encodings (for example Japanese or utf8) are multibye (so one input character is
       mapped to two output characters). The lenInOut argument specifies the number of QChars
       that should be converted and is set to the number of characters returned.

       Reimplemented from QTextCodec.

const char * QHebrewCodec::mimeName () const [virtual]
       Returns the codec's mime name.

       Reimplemented from QTextCodec.

SEE ALSO
       http://doc.trolltech.com/qhebrewcodec.html http://www.trolltech.com/faq/tech.html

COPYRIGHT
       Copyright 1992-2001 Trolltech AS, http://www.trolltech.com.  See the license file included
       in the distribution for a complete license statement.

AUTHOR
       Generated automatically from the source code.

BUGS
       If you find a bug in Qt, please report it as described in
       http://doc.trolltech.com/bughowto.html.	Good bug reports help us to help you. Thank you.

       The definitive Qt documentation is provided in HTML format; it is located at
       $QTDIR/doc/html and can be read using Qt Assistant or with a web browser. This man page is
       provided as a convenience for those users who prefer man pages, although this format is
       not officially supported by Trolltech.

       If you find errors in this manual page, please report them to qt-bugs@trolltech.com.
       Please include the name of the manual page (qhebrewcodec.3qt) and the Qt version (3.1.1).

Trolltech AS				 9 December 2002			QHebrewCodec(3qt)


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