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-
- <modulesynopsis metafile="mod_charset_lite.xml.meta">
-
- <name>mod_charset_lite</name>
- <description>Specify character set translation or recoding</description>
- <status>Experimental</status>
- <sourcefile>mod_charset_lite.c</sourcefile>
- <identifier>charset_lite_module</identifier>
-
- <summary>
- <p>This is an <strong>experimental</strong> module and should
- be used with care. Experiment with your
- <module>mod_charset_lite</module> configuration to ensure that it
- performs the desired function.</p>
-
- <p><module>mod_charset_lite</module> 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. <module>mod_charset_lite</module> does not translate the
- data itself but instead tells Apache what translation to
- perform. <module>mod_charset_lite</module> 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. <module>mod_charset_lite</module>
- can be used to specify that a different translation is to be
- performed. In an ASCII environment, Apache normally performs no
- translation, so <module>mod_charset_lite</module> 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>
- </summary>
-
- <section id="problems"><title>Common Problems</title>
-
- <section><title>Invalid character set names</title>
-
- <p>The character set name parameters of <directive
- module="mod_charset_lite">CharsetSourceEnc</directive> and
- <directive module="mod_charset_lite">CharsetDefault</directive>
- must be acceptable to the translation mechanism used by APR on the
- system where <module>mod_charset_lite</module> 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>
-
- <example>
- iconv -f charsetsourceenc-value -t charsetdefault-value
- </example>
- </section>
-
- <section><title>Mismatch between character set of content and translation
- rules</title>
-
- <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>
- </section>
- </section>
-
- <directivesynopsis>
- <name>CharsetSourceEnc</name>
- <description>Source charset of files</description>
- <syntax>CharsetSourceEnc <var>charset</var></syntax>
- <contextlist><context>server config</context>
- <context>virtual host</context><context>directory</context>
- <context>.htaccess</context>
- </contextlist>
- <override>FileInfo</override>
-
- <usage>
- <p>The <directive>CharsetSourceEnc</directive> 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>
-
- <example><title>Example</title>
- <Directory /export/home/trawick/apacheinst/htdocs/convert><br />
- <indent>
- CharsetSourceEnc UTF-16BE<br />
- CharsetDefault ISO-8859-1<br />
- </indent>
- </Directory>
- </example>
-
- <p>The character set names in this example work with the iconv
- translation support in Solaris 8.</p>
- </usage>
- </directivesynopsis>
-
- <directivesynopsis>
- <name>CharsetDefault</name>
- <description>Charset to translate into</description>
- <syntax>CharsetDefault <var>charset</var></syntax>
- <contextlist><context>server config</context>
- <context>virtual host</context><context>directory</context>
- <context>.htaccess</context>
- </contextlist>
- <override>FileInfo</override>
-
- <usage>
- <p>The <directive>CharsetDefault</directive> 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>
-
- <example><title>Example</title>
- <Directory /export/home/trawick/apacheinst/htdocs/convert><br />
- <indent>
- CharsetSourceEnc UTF-16BE<br />
- CharsetDefault ISO-8859-1<br />
- </indent>
- </Directory>
- </example>
- </usage>
- </directivesynopsis>
-
- <directivesynopsis>
- <name>CharsetOptions</name>
- <description>Configures charset translation behavior</description>
- <syntax>CharsetOptions <var>option</var> [<var>option</var>] ...</syntax>
- <default>CharsetOptions DebugLevel=0 NoImplicitAdd</default>
- <contextlist><context>server config</context>
- <context>virtual host</context><context>directory</context>
- <context>.htaccess</context>
- </contextlist>
- <override>FileInfo</override>
-
- <usage>
- <p>The <directive>CharsetOptions</directive> directive configures certain
- behaviors of <module>mod_charset_lite</module>. <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
- <module>mod_charset_lite</module>. 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
- <module>mod_charset_lite</module> 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 <directive module="mod_mime"
- >AddOutputFilter</directive> directive, <code>NoImplicitAdd</code>
- should be specified so that <module>mod_charset_lite</module>
- doesn't add its filter.</dd>
- </dl>
- </usage>
- </directivesynopsis>
-
- </modulesynopsis>
-