mirror of
https://github.com/moparisthebest/xeps
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581 lines
19 KiB
XML
581 lines
19 KiB
XML
<?xml version="1.0"?>
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<xsl:stylesheet
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version="1.0"
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extension-element-prefixes="doc"
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xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
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xmlns:doc="http://xsltsl.org/xsl/documentation/1.0"
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xmlns:uri="http://xsltsl.org/uri"
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>
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<doc:reference xmlns="">
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<referenceinfo>
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<releaseinfo role="meta">
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$Id$
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</releaseinfo>
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<author>
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<surname>Diamond</surname>
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<firstname>Jason</firstname>
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</author>
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<copyright>
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<year>2001</year>
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<holder>Jason Diamond</holder>
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</copyright>
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</referenceinfo>
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<title>URI (Uniform Resource Identifier) Processing</title>
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<partintro>
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<section>
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<title>Introduction</title>
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<para>This module provides templates for processing URIs (Uniform Resource Identifers).</para>
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</section>
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</partintro>
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</doc:reference>
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<doc:template name="uri:is-absolute-uri" xmlns="">
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<refpurpose>Determines if a URI is absolute or relative.</refpurpose>
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<refdescription>
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<para>Absolute URIs start with a scheme (like "http:" or "mailto:").</para>
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</refdescription>
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<refparameter>
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<variablelist>
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<varlistentry>
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<term>uri</term>
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<listitem>
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<para>An absolute or relative URI.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refparameter>
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<refreturn>
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<para>Returns 'true' if the URI is absolute or '' if it's not.</para>
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</refreturn>
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</doc:template>
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<xsl:template name="uri:is-absolute-uri">
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<xsl:param name="uri"/>
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<xsl:if test="contains($uri, ':')">
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<xsl:value-of select="true()"/>
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</xsl:if>
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</xsl:template>
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<doc:template name="uri:get-uri-scheme" xmlns="">
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<refpurpose>Gets the scheme part of a URI.</refpurpose>
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<refdescription>
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<para>The ':' is not part of the scheme.</para>
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</refdescription>
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<refparameter>
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<variablelist>
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<varlistentry>
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<term>uri</term>
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<listitem>
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<para>An absolute or relative URI.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refparameter>
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<refreturn>
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<para>Returns the scheme (without the ':') or '' if the URI is relative.</para>
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</refreturn>
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</doc:template>
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<xsl:template name="uri:get-uri-scheme">
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<xsl:param name="uri"/>
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<xsl:if test="contains($uri, ':')">
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<xsl:value-of select="substring-before($uri, ':')"/>
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</xsl:if>
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</xsl:template>
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<doc:template name="uri:get-uri-authority" xmlns="">
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<refpurpose>Gets the authority part of a URI.</refpurpose>
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<refdescription>
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<para>The authority usually specifies the host machine for a resource. It always follows '//' in a typical URI.</para>
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</refdescription>
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<refparameter>
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<variablelist>
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<varlistentry>
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<term>uri</term>
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<listitem>
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<para>An absolute or relative URI.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refparameter>
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<refreturn>
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<para>Returns the authority (without the '//') or '' if the URI has no authority.</para>
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</refreturn>
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</doc:template>
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<xsl:template name="uri:get-uri-authority">
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<xsl:param name="uri"/>
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<xsl:variable name="a">
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<xsl:choose>
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<xsl:when test="contains($uri, ':')">
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<xsl:if test="substring(substring-after($uri, ':'), 1, 2) = '//'">
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<xsl:value-of select="substring(substring-after($uri, ':'), 3)"/>
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</xsl:if>
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</xsl:when>
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<xsl:otherwise>
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<xsl:if test="substring($uri, 1, 2) = '//'">
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<xsl:value-of select="substring($uri, 3)"/>
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</xsl:if>
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</xsl:otherwise>
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</xsl:choose>
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</xsl:variable>
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<xsl:choose>
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<xsl:when test="contains($a, '/')">
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<xsl:value-of select="substring-before($a, '/')" />
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</xsl:when>
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<xsl:when test="contains($a, '?')">
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<xsl:value-of select="substring-before($a, '?')" />
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</xsl:when>
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<xsl:when test="contains($a, '#')">
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<xsl:value-of select="substring-before($a, '#')" />
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</xsl:when>
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<xsl:otherwise>
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<xsl:value-of select="$a" />
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</xsl:otherwise>
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</xsl:choose>
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</xsl:template>
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<doc:template name="uri:get-uri-path" xmlns="">
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<refpurpose>Gets the path part of a URI.</refpurpose>
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<refdescription>
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<para>The path usually comes after the '/' in a URI.</para>
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</refdescription>
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<refparameter>
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<variablelist>
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<varlistentry>
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<term>uri</term>
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<listitem>
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<para>An absolute or relative URI.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refparameter>
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<refreturn>
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<para>Returns the path (with any leading '/') or '' if the URI has no path.</para>
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</refreturn>
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</doc:template>
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<xsl:template name="uri:get-uri-path">
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<xsl:param name="uri"/>
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<xsl:variable name="p">
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<xsl:choose>
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<xsl:when test="contains($uri, '//')">
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<xsl:if test="contains(substring-after($uri, '//'), '/')">
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<xsl:value-of select="concat('/', substring-after(substring-after($uri, '//'), '/'))"/>
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</xsl:if>
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</xsl:when>
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<xsl:otherwise>
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<xsl:choose>
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<xsl:when test="contains($uri, ':')">
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<xsl:value-of select="substring-after($uri, ':')"/>
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</xsl:when>
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<xsl:otherwise>
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<xsl:value-of select="$uri"/>
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</xsl:otherwise>
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</xsl:choose>
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</xsl:otherwise>
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</xsl:choose>
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</xsl:variable>
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<xsl:choose>
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<xsl:when test="contains($p, '?')">
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<xsl:value-of select="substring-before($p, '?')" />
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</xsl:when>
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<xsl:when test="contains($p, '#')">
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<xsl:value-of select="substring-before($p, '#')" />
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</xsl:when>
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<xsl:otherwise>
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<xsl:value-of select="$p" />
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</xsl:otherwise>
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</xsl:choose>
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</xsl:template>
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<doc:template name="uri:get-uri-query" xmlns="">
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<refpurpose>Gets the query part of a URI.</refpurpose>
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<refdescription>
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<para>The query comes after the '?' in a URI.</para>
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</refdescription>
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<refparameter>
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<variablelist>
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<varlistentry>
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<term>uri</term>
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<listitem>
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<para>An absolute or relative URI.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refparameter>
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<refreturn>
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<para>Returns the query (without the '?') or '' if the URI has no query.</para>
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</refreturn>
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</doc:template>
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<xsl:template name="uri:get-uri-query">
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<xsl:param name="uri"/>
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<xsl:variable name="q" select="substring-after($uri, '?')"/>
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<xsl:choose>
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<xsl:when test="contains($q, '#')">
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<xsl:value-of select="substring-before($q, '#')"/>
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</xsl:when>
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<xsl:otherwise><xsl:value-of select="$q"/></xsl:otherwise>
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</xsl:choose>
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</xsl:template>
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<doc:template name="uri:get-uri-fragment" xmlns="">
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<refpurpose>Gets the fragment part of a URI.</refpurpose>
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<refdescription>
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<para>The fragment comes after the '#' in a URI.</para>
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</refdescription>
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<refparameter>
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<variablelist>
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<varlistentry>
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<term>uri</term>
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<listitem>
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<para>An absolute or relative URI.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refparameter>
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<refreturn>
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<para>Returns the fragment (without the '#') or '' if the URI has no fragment.</para>
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</refreturn>
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</doc:template>
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<xsl:template name="uri:get-uri-fragment">
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<xsl:param name="uri"/>
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<xsl:value-of select="substring-after($uri, '#')"/>
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</xsl:template>
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<doc:template name="uri:resolve-uri" xmlns="">
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<refpurpose>Resolves a URI reference against a base URI.</refpurpose>
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<refdescription>
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<para>This template follows the guidelines specified by <ulink url="ftp://ftp.isi.edu/in-notes/rfc2396.txt">RFC 2396</ulink>.</para>
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</refdescription>
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<refparameter>
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<variablelist>
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<varlistentry>
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<term>reference</term>
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<listitem>
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<para>A (potentially relative) URI reference.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>base</term>
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<listitem>
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<para>The base URI.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>document</term>
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<listitem>
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<para>The URI of the current document. This defaults to the value of the base URI if not specified.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refparameter>
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<refreturn>
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<para>The "combined" URI.</para>
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</refreturn>
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</doc:template>
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<xsl:template name="uri:resolve-uri">
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<xsl:param name="reference"/>
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<xsl:param name="base"/>
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<xsl:param name="document" select="$base"/>
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<xsl:variable name="reference-scheme">
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<xsl:call-template name="uri:get-uri-scheme">
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<xsl:with-param name="uri" select="$reference"/>
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</xsl:call-template>
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</xsl:variable>
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<xsl:variable name="reference-authority">
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<xsl:call-template name="uri:get-uri-authority">
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<xsl:with-param name="uri" select="$reference"/>
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</xsl:call-template>
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</xsl:variable>
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<xsl:variable name="reference-path">
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<xsl:call-template name="uri:get-uri-path">
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<xsl:with-param name="uri" select="$reference"/>
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</xsl:call-template>
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</xsl:variable>
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<xsl:variable name="reference-query">
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<xsl:call-template name="uri:get-uri-query">
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<xsl:with-param name="uri" select="$reference"/>
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</xsl:call-template>
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</xsl:variable>
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<xsl:variable name="reference-fragment">
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<xsl:call-template name="uri:get-uri-fragment">
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<xsl:with-param name="uri" select="$reference"/>
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</xsl:call-template>
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</xsl:variable>
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<xsl:choose>
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<xsl:when test="
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not(string-length($reference-scheme)) and
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not(string-length($reference-authority)) and
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not(string-length($reference-path)) and
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not(string-length($reference-query))"
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>
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<xsl:choose>
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<xsl:when test="contains($document, '?')">
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<xsl:value-of select="substring-before($document, '?')"/>
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</xsl:when>
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<xsl:when test="contains($document, '#')">
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<xsl:value-of select="substring-before($document, '#')"/>
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</xsl:when>
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<xsl:otherwise>
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<xsl:value-of select="$document"/>
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</xsl:otherwise>
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</xsl:choose>
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<xsl:if test="string-length($reference-fragment)">
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<xsl:value-of select="concat('#', $reference-fragment)"/>
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</xsl:if>
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</xsl:when>
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<xsl:when test="string-length($reference-scheme)">
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<xsl:value-of select="$reference"/>
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</xsl:when>
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<xsl:otherwise>
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<xsl:variable name="base-scheme">
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<xsl:call-template name="uri:get-uri-scheme">
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<xsl:with-param name="uri" select="$base"/>
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</xsl:call-template>
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</xsl:variable>
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<xsl:variable name="base-authority">
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<xsl:call-template name="uri:get-uri-authority">
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<xsl:with-param name="uri" select="$base"/>
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</xsl:call-template>
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</xsl:variable>
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<xsl:variable name="base-path">
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<xsl:call-template name="uri:get-uri-path">
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<xsl:with-param name="uri" select="$base"/>
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</xsl:call-template>
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</xsl:variable>
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<xsl:variable name="base-query">
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<xsl:call-template name="uri:get-uri-query">
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<xsl:with-param name="uri" select="$base"/>
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</xsl:call-template>
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</xsl:variable>
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<xsl:variable name="base-fragment">
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<xsl:call-template name="uri:get-uri-fragment">
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<xsl:with-param name="uri" select="$base"/>
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</xsl:call-template>
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</xsl:variable>
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<xsl:variable name="result-authority">
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<xsl:choose>
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<xsl:when test="string-length($reference-authority)">
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<xsl:value-of select="$reference-authority"/>
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</xsl:when>
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<xsl:otherwise>
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<xsl:value-of select="$base-authority"/>
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</xsl:otherwise>
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</xsl:choose>
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</xsl:variable>
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<xsl:variable name="result-path">
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<xsl:choose>
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<!-- don't normalize absolute paths -->
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<xsl:when test="starts-with($reference-path, '/')">
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<xsl:value-of select="$reference-path" />
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</xsl:when>
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<xsl:otherwise>
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<xsl:call-template name="uri:normalize-path">
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<xsl:with-param name="path">
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<xsl:if test="string-length($reference-authority) = 0 and substring($reference-path, 1, 1) != '/'">
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<xsl:call-template name="uri:get-path-without-file">
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<xsl:with-param name="path-with-file" select="$base-path"/>
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</xsl:call-template>
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<xsl:value-of select="'/'"/>
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</xsl:if>
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<xsl:value-of select="$reference-path"/>
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</xsl:with-param>
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</xsl:call-template>
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</xsl:otherwise>
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</xsl:choose>
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</xsl:variable>
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<xsl:value-of select="concat($base-scheme, '://', $result-authority, $result-path)"/>
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<xsl:if test="string-length($reference-query)">
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<xsl:value-of select="concat('?', $reference-query)"/>
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</xsl:if>
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<xsl:if test="string-length($reference-fragment)">
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<xsl:value-of select="concat('#', $reference-fragment)"/>
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</xsl:if>
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</xsl:otherwise>
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</xsl:choose>
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</xsl:template>
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<xsl:template name="uri:get-path-without-file">
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<xsl:param name="path-with-file" />
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<xsl:param name="path-without-file" />
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<xsl:choose>
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<xsl:when test="contains($path-with-file, '/')">
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<xsl:call-template name="uri:get-path-without-file">
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<xsl:with-param name="path-with-file" select="substring-after($path-with-file, '/')" />
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<xsl:with-param name="path-without-file">
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<xsl:choose>
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<xsl:when test="$path-without-file">
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<xsl:value-of select="concat($path-without-file, '/', substring-before($path-with-file, '/'))" />
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</xsl:when>
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<xsl:otherwise>
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<xsl:value-of select="substring-before($path-with-file, '/')" />
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</xsl:otherwise>
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</xsl:choose>
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</xsl:with-param>
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</xsl:call-template>
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</xsl:when>
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<xsl:otherwise>
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<xsl:value-of select="$path-without-file" />
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</xsl:otherwise>
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</xsl:choose>
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</xsl:template>
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<xsl:template name="uri:normalize-path">
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<xsl:param name="path"/>
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|
<xsl:param name="result" select="''"/>
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|
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<xsl:choose>
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|
<xsl:when test="string-length($path)">
|
|
<xsl:choose>
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<xsl:when test="$path = '/'">
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<xsl:value-of select="concat($result, '/')"/>
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</xsl:when>
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<xsl:when test="$path = '.'">
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<xsl:value-of select="concat($result, '/')"/>
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</xsl:when>
|
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<xsl:when test="$path = '..'">
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<xsl:call-template name="uri:get-path-without-file">
|
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<xsl:with-param name="path-with-file" select="$result"/>
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</xsl:call-template>
|
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<xsl:value-of select="'/'"/>
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</xsl:when>
|
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<xsl:when test="contains($path, '/')">
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<!-- the current segment -->
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<xsl:variable name="s" select="substring-before($path, '/')"/>
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<!-- the remaining path -->
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<xsl:variable name="p">
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<xsl:choose>
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<xsl:when test="substring-after($path, '/') = ''">
|
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<xsl:value-of select="'/'"/>
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</xsl:when>
|
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<xsl:otherwise>
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<xsl:value-of select="substring-after($path, '/')"/>
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</xsl:otherwise>
|
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</xsl:choose>
|
|
</xsl:variable>
|
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<xsl:choose>
|
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<xsl:when test="$s = ''">
|
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<xsl:call-template name="uri:normalize-path">
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<xsl:with-param name="path" select="$p"/>
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|
<xsl:with-param name="result" select="$result"/>
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|
</xsl:call-template>
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|
</xsl:when>
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|
<xsl:when test="$s = '.'">
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|
<xsl:call-template name="uri:normalize-path">
|
|
<xsl:with-param name="path" select="$p"/>
|
|
<xsl:with-param name="result" select="$result"/>
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|
</xsl:call-template>
|
|
</xsl:when>
|
|
<xsl:when test="$s = '..'">
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|
<xsl:choose>
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|
<xsl:when test="string-length($result) and (substring($result, string-length($result) - 2) != '/..')">
|
|
<xsl:call-template name="uri:normalize-path">
|
|
<xsl:with-param name="path" select="$p"/>
|
|
<xsl:with-param name="result">
|
|
<xsl:call-template name="uri:get-path-without-file">
|
|
<xsl:with-param name="path-with-file" select="$result"/>
|
|
</xsl:call-template>
|
|
</xsl:with-param>
|
|
</xsl:call-template>
|
|
</xsl:when>
|
|
<xsl:otherwise>
|
|
<xsl:call-template name="uri:normalize-path">
|
|
<xsl:with-param name="path" select="$p"/>
|
|
<xsl:with-param name="result" select="concat($result, '/..')"/>
|
|
</xsl:call-template>
|
|
</xsl:otherwise>
|
|
</xsl:choose>
|
|
</xsl:when>
|
|
<xsl:otherwise>
|
|
<xsl:call-template name="uri:normalize-path">
|
|
<xsl:with-param name="path" select="$p"/>
|
|
<xsl:with-param name="result" select="concat($result, '/', $s)"/>
|
|
</xsl:call-template>
|
|
</xsl:otherwise>
|
|
</xsl:choose>
|
|
</xsl:when>
|
|
<xsl:otherwise>
|
|
<xsl:value-of select="concat($result, '/', $path)"/>
|
|
</xsl:otherwise>
|
|
</xsl:choose>
|
|
</xsl:when>
|
|
<xsl:otherwise>
|
|
<xsl:value-of select="$result"/>
|
|
</xsl:otherwise>
|
|
</xsl:choose>
|
|
|
|
</xsl:template>
|
|
|
|
</xsl:stylesheet>
|