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<div id="preamble"><h1>Apache Module mod_charset_lite</h1>
<div class="toplang">
<p><span>Available Languages: </span><a href="../en/mod/mod_charset_lite.html" title="English"> en </a> |
<a href="../ko/mod/mod_charset_lite.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p>
</div>
<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Specify character set translation or recoding</td></tr>
<tr><th><a href="module-dict.html#Status">Status:</a></th><td>Experimental</td></tr>
<tr><th><a href="module-dict.html#ModuleIdentifier">Module營dentifier:</a></th><td>charset_lite_module</td></tr>
<tr><th><a href="module-dict.html#SourceFile">Source燜ile:</a></th><td>mod_charset_lite.c</td></tr></table>
<h3>Summary</h3>
<p>This is an <strong>experimental</strong> module and should
be used with care. Experiment with your
<code class="module"><a href="../mod/mod_charset_lite.html">mod_charset_lite</a></code> configuration to ensure that it
performs the desired function.</p>
<p><code class="module"><a href="../mod/mod_charset_lite.html">mod_charset_lite</a></code> allows the administrator to
specify the source character set of objects as well as the
character set they should be translated into before sending to the
client. <code class="module"><a href="../mod/mod_charset_lite.html">mod_charset_lite</a></code> does not translate the
data itself but instead tells Apache what translation to
perform. <code class="module"><a href="../mod/mod_charset_lite.html">mod_charset_lite</a></code> is applicable to EBCDIC
and ASCII host environments. In an EBCDIC environment, Apache
normally translates text content from the code page of the Apache
process locale to ISO-8859-1. <code class="module"><a href="../mod/mod_charset_lite.html">mod_charset_lite</a></code>
can be used to specify that a different translation is to be
performed. In an ASCII environment, Apache normally performs no
translation, so <code class="module"><a href="../mod/mod_charset_lite.html">mod_charset_lite</a></code> is needed in
order for any translation to take place.</p>
<p>This module provides a small subset of configuration
mechanisms implemented by Russian Apache and its associated
<code>mod_charset</code>.</p>
</div>
<div id="quickview"><h3 class="directives">Directives</h3>
<ul id="toc">
<li><img alt="" src="../images/down.gif" /> <a href="#charsetdefault">CharsetDefault</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#charsetoptions">CharsetOptions</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#charsetsourceenc">CharsetSourceEnc</a></li>
</ul>
<h3>Topics</h3>
<ul id="topics">
<li><img alt="" src="../images/down.gif" /> <a href="#problems">Common Problems</a></li>
</ul></div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="section">
<h2><a name="problems" id="problems">Common Problems</a></h2>
<h3>Invalid character set names</h3>
<p>The character set name parameters of <code class="directive"><a href="#charsetsourceenc">CharsetSourceEnc</a></code> and
<code class="directive"><a href="#charsetdefault">CharsetDefault</a></code>
must be acceptable to the translation mechanism used by APR on the
system where <code class="module"><a href="../mod/mod_charset_lite.html">mod_charset_lite</a></code> is deployed. These
character set names are not standardized and are usually not the
same as the corresponding values used in http headers. Currently,
APR can only use iconv(3), so you can easily test your character
set names using the iconv(1) program, as follows:</p>
<div class="example"><p><code>
iconv -f charsetsourceenc-value -t charsetdefault-value
</code></p></div>
<h3>Mismatch between character set of content and translation
rules</h3>
<p>If the translation rules don't make sense for the content,
translation can fail in various ways, including:</p>
<ul>
<li>The translation mechanism may return a bad return code,
and the connection will be aborted.</li>
<li>The translation mechanism may silently place special
characters (e.g., question marks) in the output buffer when
it cannot translate the input buffer.</li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="CharsetDefault" id="CharsetDefault">CharsetDefault</a> <a name="charsetdefault" id="charsetdefault">Directive</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Charset to translate into</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>CharsetDefault <var>charset</var></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>FileInfo</td></tr>
<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Experimental</td></tr>
<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_charset_lite</td></tr>
</table>
<p>The <code class="directive">CharsetDefault</code> directive specifies the
charset that content in the associated container should be
translated to.</p>
<p>The value of the <var>charset</var> argument must be accepted
as a valid character set name by the character set support in
APR. Generally, this means that it must be supported by
iconv.</p>
<div class="example"><h3>Example</h3><p><code>
<Directory /export/home/trawick/apacheinst/htdocs/convert><br />
<span class="indent">
CharsetSourceEnc UTF-16BE<br />
CharsetDefault ISO-8859-1<br />
</span>
</Directory>
</code></p></div>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="CharsetOptions" id="CharsetOptions">CharsetOptions</a> <a name="charsetoptions" id="charsetoptions">Directive</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Configures charset translation behavior</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>CharsetOptions <var>option</var> [<var>option</var>] ...</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>CharsetOptions DebugLevel=0 NoImplicitAdd</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>FileInfo</td></tr>
<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Experimental</td></tr>
<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_charset_lite</td></tr>
</table>
<p>The <code class="directive">CharsetOptions</code> directive configures certain
behaviors of <code class="module"><a href="../mod/mod_charset_lite.html">mod_charset_lite</a></code>. <var>Option</var> can
be one of</p>
<dl>
<dt><code>DebugLevel=<var>n</var></code></dt>
<dd>The <code>DebugLevel</code> keyword allows you to specify
the level of debug messages generated by
<code class="module"><a href="../mod/mod_charset_lite.html">mod_charset_lite</a></code>. By default, no messages are
generated. This is equivalent to <code>DebugLevel=0</code>.
With higher numbers, more debug messages are generated, and
server performance will be degraded. The actual meanings of
the numeric values are described with the definitions of the
DBGLVL_ constants near the beginning of
<code>mod_charset_lite.c</code>.</dd>
<dt><code>ImplicitAdd | NoImplicitAdd</code></dt>
<dd>The <code>ImplicitAdd</code> keyword specifies that
<code class="module"><a href="../mod/mod_charset_lite.html">mod_charset_lite</a></code> should implicitly insert its
filter when the configuration specifies that the character
set of content should be translated. If the filter chain is
explicitly configured using the <code class="directive"><a href="../mod/mod_mime.html#addoutputfilter">AddOutputFilter</a></code> directive, <code>NoImplicitAdd</code>
should be specified so that <code class="module"><a href="../mod/mod_charset_lite.html">mod_charset_lite</a></code>
doesn't add its filter.</dd>
</dl>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="CharsetSourceEnc" id="CharsetSourceEnc">CharsetSourceEnc</a> <a name="charsetsourceenc" id="charsetsourceenc">Directive</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Source charset of files</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>CharsetSourceEnc <var>charset</var></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>FileInfo</td></tr>
<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Experimental</td></tr>
<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_charset_lite</td></tr>
</table>
<p>The <code class="directive">CharsetSourceEnc</code> directive specifies the
source charset of files in the associated container.</p>
<p>The value of the <var>charset</var> argument must be accepted
as a valid character set name by the character set support in
APR. Generally, this means that it must be supported by
iconv.</p>
<div class="example"><h3>Example</h3><p><code>
<Directory /export/home/trawick/apacheinst/htdocs/convert><br />
<span class="indent">
CharsetSourceEnc UTF-16BE<br />
CharsetDefault ISO-8859-1<br />
</span>
</Directory>
</code></p></div>
<p>The character set names in this example work with the iconv
translation support in Solaris 8.</p>
</div>
</div>
<div class="bottomlang">
<p><span>Available Languages: </span><a href="../en/mod/mod_charset_lite.html" title="English"> en </a> |
<a href="../ko/mod/mod_charset_lite.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p>
</div><div id="footer">
<p class="apache">Copyright 2006 The Apache Software Foundation.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p>
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