Moved section on Programming I18N Compliant Applications from Handbook

to Developers Handbook.

Suggsted by: nik and murray
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Chern Lee 2001-09-13 00:14:45 +00:00
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<!--
The FreeBSD Documentation Project
$FreeBSD$
-->
<chapter id="l10n">
<title>Localization - I18N</title>
<sect1>
<title>Programming I18N Compliant Applications</title>
<indexterm><primary>Qt</primary></indexterm>
<indexterm><primary>GTK</primary></indexterm>
<para>To make your application more useful for speakers of other
languages, we hope that you will program I18N compliant. The GNU
gcc compiler, GUI Libraries like QT and GTK support I18N through
special handling of strings. Making a program I18N compliant is
very easy. It allows contributors to port your application to
other languages quickly. Refer to library specific I18N
documentation for more details.</para>
<para>To the contrary of common perception, I18N compliant code is
easy to write. Usually, it only involves wrapping your strings
with library specific functions. In addition, please be sure to
allow for wide or multibyte characters support.</para>
<sect3>
<title>A Call to Unify the I18N Effort</title>
<para>It has come to our attention that the individual I18N/L10N
efforts for each country has been repeating each others'
efforts. Many of us have been reinventing the wheel repeatedly
and inefficiently. We hope that the various major groups in
I18N could congregate into a group effort similar to the Core
Team's responsibility.</para>
<para>Currently, we hope that, when you write or port I18N
programs, you would send it out to each country's related
FreeBSD mailing lists for testing. In the future, we hope to
create applications that work in all the languages
out-of-the-box without dirty hacks.</para>
<para>The mailing list <email>FreeBSD-I18N@FreeBSD.org</email>
has been established. If you are an I18N/L10N developer,
please send your comments, ideas, questions, and anything
you deem related to it. </para>
<para> Michael C. Wu will be maintaining an I18N works in progress
homepage at <ulink
url="http://www.FreeBSD.org/~keichii/i18n/index.html">http://www.FreeBSD.org/~keichii/i18n/index.html</ulink>
Please also read the BSDCon2000 I18N paper and presentations
by Clive Lin, Chia-Liang Kao, and Michael C. Wu at <ulink
url="http://www.FreeBSD.org/~keichii/papers/">http://www.FreeBSD.org/~keichii/papers/</ulink></para>
</sect3>
<sect3>
<title>Perl and Python</title>
<indexterm>
<primary>Perl</primary>
</indexterm>
<indexterm>
<primary>Python</primary>
</indexterm>
<para>Perl and Python have I18N and wide characters handling
libraries. Please use them for I18N compliance.</para>
<para>In older FreeBSD versions,
Perl may gives warning about not having a wide characters locale
that is already installed in your system. You can set the
environmental variable <envar>LD_PRELOAD</envar> to
<filename>/usr/lib/libxpg4.so</filename> in your shell.</para>
<para>In <literal>sh</literal>-based shells:</para>
<programlisting><envar>LD_PRELOAD=/usr/lib/libxpg4.so</envar></programlisting>
<para>In <literal>C</literal>-based shells:</para>
<programlisting><envar>setenv LD_PRELOAD /usr/lib/libxpg4.so</envar></programlisting>
</sect3>
</sect1>
</chapter>