noirin at apache
Nov 2, 2009, 5:09 PM
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svn commit: r832239 - in /httpd/httpd/trunk/docs/manual/mod: mod_rewrite.html.en mod_rewrite.xml
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Author: noirin
Date: Tue Nov 3 01:09:38 2009
New Revision: 832239
URL: http://svn.apache.org/viewvc?rev=832239&view=rev
Log:
Removing more cruft, rewriting what's left
Modified:
httpd/httpd/trunk/docs/manual/mod/mod_rewrite.html.en
httpd/httpd/trunk/docs/manual/mod/mod_rewrite.xml
Modified: httpd/httpd/trunk/docs/manual/mod/mod_rewrite.html.en
URL: http://svn.apache.org/viewvc/httpd/httpd/trunk/docs/manual/mod/mod_rewrite.html.en?rev=832239&r1=832238&r2=832239&view=diff
==============================================================================
--- httpd/httpd/trunk/docs/manual/mod/mod_rewrite.html.en (original)
+++ httpd/httpd/trunk/docs/manual/mod/mod_rewrite.html.en Tue Nov 3 01:09:38 2009
@@ -71,90 +71,35 @@
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Sets the base URL for per-directory rewrites</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>RewriteBase <em>URL-path</em></code></td></tr>
-<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>See usage for information.</code></td></tr>
+<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>None</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>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>Extension</td></tr>
<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_rewrite</td></tr>
</table>
<p>The <code class="directive">RewriteBase</code> directive explicitly
- sets the base URL for per-directory rewrites. As you will see
- below, <code class="directive"><a href="#rewriterule">RewriteRule</a></code>
- can be used in per-directory config files
- (<code>.htaccess</code>). In such a case, it will act locally,
- stripping the local directory prefix before processing, and applying
- rewrite rules only to the remainder. When processing is complete, the
- prefix is automatically added back to the
- path. The default setting is; <code class="directive">RewriteBase</code> <em>physical-directory-path</em></p>
-
- <p>When a substitution occurs for a new URL, this module has
- to re-inject the URL into the server processing. To be able
- to do this it needs to know what the corresponding URL-prefix
- or URL-base is. By default this prefix is the corresponding
- filepath itself. <strong>However, for most websites, URLs are NOT
- directly related to physical filename paths, so this
- assumption will often be wrong!</strong> Therefore, you can
- use the <code>RewriteBase</code> directive to specify the
- correct URL-prefix.</p>
-
-<div class="note"> If your webserver's URLs are <strong>not</strong> directly
-related to physical file paths, you will need to use
-<code class="directive">RewriteBase</code> in every <code>.htaccess</code>
-file where you want to use <code class="directive"><a href="#rewriterule">RewriteRule</a></code> directives.
-</div>
-
- <p> For example, assume the following per-directory config file:</p>
-
+ sets the base URL for per-directory rewrites.
+ When you use a <code class="directive"><a href="#rewriterule">RewriteRule</a></code>
+ in a <code>.htaccess</code> file, <code class="module"><a href="../mod/mod_rewrite.html">mod_rewrite</a></code> strips off
+ the local directory prefix before processing, then rewrites the rest of
+ the URL. When the rewrite is completed, <code class="module"><a href="../mod/mod_rewrite.html">mod_rewrite</a></code>
+ automatically adds the local directory prefix back on to the path.</p>
+
+ <p>If your URL path does not exist on the filesystem,
+ you must use <code class="directive">RewriteBase</code> in every
+ <code>.htaccess</code> file where you want to use <code class="directive"><a href="#rewriterule">RewriteRule</a></code> directives. </p>
+
+ <p>The example below demonstrates how to map
+ http://example.com/foo/index.html to
+ /home/www/example/newsite.html, in a <code>.htaccess</code> file. This
+ assumes that the content available at
+ http://example.com/ is on disk at /home/www/example/</p>
<div class="example"><pre>
-#
-# /abc/def/.htaccess -- per-dir config file for directory /abc/def
-# Remember: /abc/def is the physical path of /xyz, <em>i.e.</em>, the server
-# has a 'Alias /xyz /abc/def' directive <em>e.g.</em>
-#
-
RewriteEngine On
-
-# let the server know that we were reached via /xyz and not
-# via the physical path prefix /abc/def
-RewriteBase /xyz
-
-# now the rewriting rules
-RewriteRule ^oldstuff\.html$ newstuff.html
+RewriteBase /foo/
+RewriteRule ^index\.html$ newsite.html
</pre></div>
- <p>In the above example, a request to
- <code>/xyz/oldstuff.html</code> gets correctly rewritten to
- the physical file <code>/abc/def/newstuff.html</code>.</p>
-
-<div class="note"><h3>For Apache Hackers</h3>
-<p>The following list gives detailed information about
- the internal processing steps:</p>
-<pre>
-Request:
- /xyz/oldstuff.html
-
-Internal Processing:
- /xyz/oldstuff.html -> /abc/def/oldstuff.html (per-server Alias)
- /abc/def/oldstuff.html -> /abc/def/newstuff.html (per-dir RewriteRule)
- /abc/def/newstuff.html -> /xyz/newstuff.html (per-dir RewriteBase)
- /xyz/newstuff.html -> /abc/def/newstuff.html (per-server Alias)
-
-Result:
- /abc/def/newstuff.html
-</pre>
- <p>This seems very complicated, but is in fact
- correct Apache internal processing. Because the
- per-directory rewriting comes late in the
- process, the rewritten request
- has to be re-injected into the Apache kernel, as if it
- were a new request. (See <a href="../rewrite/tech.html">mod_rewrite technical
- details</a>.)
- This is not the serious overhead it may seem to be -
- this re-injection is completely internal to the
- Apache server (and the same procedure is used by
- many other operations within Apache).</p>
-</div>
-
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
Modified: httpd/httpd/trunk/docs/manual/mod/mod_rewrite.xml
URL: http://svn.apache.org/viewvc/httpd/httpd/trunk/docs/manual/mod/mod_rewrite.xml?rev=832239&r1=832238&r2=832239&view=diff
==============================================================================
--- httpd/httpd/trunk/docs/manual/mod/mod_rewrite.xml (original)
+++ httpd/httpd/trunk/docs/manual/mod/mod_rewrite.xml Tue Nov 3 01:09:38 2009
@@ -496,94 +496,38 @@
<name>RewriteBase</name>
<description>Sets the base URL for per-directory rewrites</description>
<syntax>RewriteBase <em>URL-path</em></syntax>
-<default>See usage for information.</default>
+<default>None</default>
<contextlist><context>directory</context><context>.htaccess</context>
</contextlist>
<override>FileInfo</override>
<usage>
<p>The <directive>RewriteBase</directive> directive explicitly
- sets the base URL for per-directory rewrites. As you will see
- below, <directive module="mod_rewrite">RewriteRule</directive>
- can be used in per-directory config files
- (<code>.htaccess</code>). In such a case, it will act locally,
- stripping the local directory prefix before processing, and applying
- rewrite rules only to the remainder. When processing is complete, the
- prefix is automatically added back to the
- path. The default setting is; <directive>RewriteBase</directive> <em>physical-directory-path</em></p>
-
- <p>When a substitution occurs for a new URL, this module has
- to re-inject the URL into the server processing. To be able
- to do this it needs to know what the corresponding URL-prefix
- or URL-base is. By default this prefix is the corresponding
- filepath itself. <strong>However, for most websites, URLs are NOT
- directly related to physical filename paths, so this
- assumption will often be wrong!</strong> Therefore, you can
- use the <code>RewriteBase</code> directive to specify the
- correct URL-prefix.</p>
-
-<note> If your webserver's URLs are <strong>not</strong> directly
-related to physical file paths, you will need to use
-<directive>RewriteBase</directive> in every <code>.htaccess</code>
-file where you want to use <directive
-module="mod_rewrite">RewriteRule</directive> directives.
-</note>
-
- <p> For example, assume the following per-directory config file:</p>
-
+ sets the base URL for per-directory rewrites.
+ When you use a <directive module="mod_rewrite">RewriteRule</directive>
+ in a <code>.htaccess</code> file, <module>mod_rewrite</module> strips off
+ the local directory prefix before processing, then rewrites the rest of
+ the URL. When the rewrite is completed, <module>mod_rewrite</module>
+ automatically adds the local directory prefix back on to the path.</p>
+
+ <p>If your URL path does not exist on the filesystem,
+ you must use <directive>RewriteBase</directive> in every
+ <code>.htaccess</code> file where you want to use <directive
+ module="mod_rewrite">RewriteRule</directive> directives. </p>
+
+ <p>The example below demonstrates how to map
+ http://example.com/foo/index.html to
+ /home/www/example/newsite.html, in a <code>.htaccess</code> file. This
+ assumes that the content available at
+ http://example.com/ is on disk at /home/www/example/</p>
<example>
<pre>
-#
-# /abc/def/.htaccess -- per-dir config file for directory /abc/def
-# Remember: /abc/def is the physical path of /xyz, <em>i.e.</em>, the server
-# has a 'Alias /xyz /abc/def' directive <em>e.g.</em>
-#
-
RewriteEngine On
-
-# let the server know that we were reached via /xyz and not
-# via the physical path prefix /abc/def
-RewriteBase /xyz
-
-# now the rewriting rules
-RewriteRule ^oldstuff\.html$ newstuff.html
+RewriteBase /foo/
+RewriteRule ^index\.html$ newsite.html
</pre>
</example>
- <p>In the above example, a request to
- <code>/xyz/oldstuff.html</code> gets correctly rewritten to
- the physical file <code>/abc/def/newstuff.html</code>.</p>
-
-<note><title>For Apache Hackers</title>
-<p>The following list gives detailed information about
- the internal processing steps:</p>
-<pre>
-Request:
- /xyz/oldstuff.html
-
-Internal Processing:
- /xyz/oldstuff.html -> /abc/def/oldstuff.html (per-server Alias)
- /abc/def/oldstuff.html -> /abc/def/newstuff.html (per-dir RewriteRule)
- /abc/def/newstuff.html -> /xyz/newstuff.html (per-dir RewriteBase)
- /xyz/newstuff.html -> /abc/def/newstuff.html (per-server Alias)
-
-Result:
- /abc/def/newstuff.html
-</pre>
- <p>This seems very complicated, but is in fact
- correct Apache internal processing. Because the
- per-directory rewriting comes late in the
- process, the rewritten request
- has to be re-injected into the Apache kernel, as if it
- were a new request. (See <a
- href="../rewrite/tech.html">mod_rewrite technical
- details</a>.)
- This is not the serious overhead it may seem to be -
- this re-injection is completely internal to the
- Apache server (and the same procedure is used by
- many other operations within Apache).</p>
-</note>
-
</usage>
</directivesynopsis>
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