add xslt script for generating the directive -> url mapping

<?xml version="1.0"?>

<!--

 Copyright 2005 The Apache Software Foundation or its licensors, as

 applicable.

 Licensed under the Apache License, Version 2.0 (the "License");

 you may not use this file except in compliance with the License.

 You may obtain a copy of the License at

     http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software

 distributed under the License is distributed on an "AS IS" BASIS,

 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 See the License for the specific language governing permissions and

 limitations under the License.

-->

<!DOCTYPE xsl:stylesheet [

    <!ENTITY lf SYSTEM "util/lf.xml">

]>

<xsl:stylesheet version="1.0"

              xmlns:xsl="http://www.w3.org/1999/XSL/Transform"

                  xmlns="http://www.w3.org/1999/xhtml">

<xsl:output method="text" encoding="ISO-8859-1" indent="no" />

<!-- Constants used for case translation -->

<xsl:variable name="lowercase" select="'abcdefghijklmnopqrstuvwxyz'" />

<xsl:variable name="uppercase" select="'ABCDEFGHIJKLMNOPQRSTUVWXYZ'" />

<!-- ==================================================================== -->

<!-- <modulefilelist>                                                     -->

<!-- Builds the rewrite map                                               -->

<!-- ==================================================================== -->

<xsl:template match="modulefilelist">

<xsl:text># Mapping from directive names to URLs</xsl:text>&lf;

<xsl:text># GENERATED FROM XML -- DO NOT EDIT</xsl:text>&lf;

<xsl:text># You may use it as follows:</xsl:text>&lf;

<xsl:text># RewriteEngine On</xsl:text>&lf;

<xsl:text># RewriteMap dir2url </xsl:text>

<xsl:text>txt:/path/to/convenience.map</xsl:text>&lf;

<xsl:text># RewriteCond ${dir2url:$1} (.+)</xsl:text>&lf;

<xsl:text># RewriteRule ^/+([^/]+) /manual/%1 [R=301,NE,L]</xsl:text>&lf;&lf;

<xsl:apply-templates

    select="document(modulefile)/modulesynopsis[status!='Obsolete']

                /directivesynopsis[not(@location)]">

    <xsl:sort select="name" />

</xsl:apply-templates>

</xsl:template>

<!-- /modulefilelist -->

<!-- ==================================================================== -->

<!-- <directivesynopsis>                                                  -->

<!-- ==================================================================== -->

<xsl:template match="directivesynopsis">

    <xsl:value-of select="translate(name, $uppercase, $lowercase)" />

    <xsl:text>&#9;mod/</xsl:text>

    <xsl:value-of select="../name" />

    <xsl:text>.html#</xsl:text>

    <xsl:value-of select="translate(name, $uppercase, $lowercase)" />

    &lf;

</xsl:template>

<!-- /directivesynopsis -->

</xsl:stylesheet>