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check for absolute URI before updating relative URIs.

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[SVN r32441]
This commit is contained in:
João Abecasis 2006-01-27 19:08:48 +00:00
parent 51b1cb4bea
commit 3227dde659
1 changed files with 68 additions and 31 deletions
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99
xsl/relative-href.xsl
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@ -6,48 +6,85 @@
<!-- ==================================================================== -->
<!-- Check if path is absolute
Not attempting to fully parse or validate absolute vs. relative URI.
Assumes an absolute url when $target matches the regex '^[a-zA-Z+-.]*:'
According to RFC1808, however, the colon (':') may also appear in a relative
URL. To workaround this limitation for relative links containing colons one
may use the alternatives below, instead.
For the relative URI this:that use ./this:that or this%3Athat, instead.
-->
<xsl:template name="is.absolute.uri">
<xsl:param name="uri"/>
<xsl:variable name="scheme1" select="substring-before($uri, ':')"/>
<xsl:variable name="scheme2" select="translate($scheme1, 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789+-.', '')"/>
<xsl:choose>
<xsl:when test="$scheme1 and not($scheme2)">1</xsl:when>
<xsl:otherwise>0</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template name="href.target.relative">
<xsl:param name="target"/>
<xsl:param name="context" select="."/>
<xsl:variable name="href.to.uri" select="$target"/>
<xsl:variable name="href.from.uri">
<xsl:call-template name="href.target.uri">
<xsl:with-param name="object" select="$context"/>
<xsl:variable name="isabsoluteuri">
<xsl:call-template name="is.absolute.uri">
<xsl:with-param name="uri" select="$target"/>
</xsl:call-template>
</xsl:variable>
<xsl:variable name="href.to">
<xsl:call-template name="trim.common.uri.paths">
<xsl:with-param name="uriA" select="$href.to.uri"/>
<xsl:with-param name="uriB" select="$href.from.uri"/>
<xsl:with-param name="return" select="'A'"/>
</xsl:call-template>
</xsl:variable>
<xsl:choose>
<xsl:when test="$isabsoluteuri='1'">
<xsl:value-of select="$target"/>
</xsl:when>
<xsl:variable name="href.from">
<xsl:call-template name="trim.common.uri.paths">
<xsl:with-param name="uriA" select="$href.to.uri"/>
<xsl:with-param name="uriB" select="$href.from.uri"/>
<xsl:with-param name="return" select="'B'"/>
</xsl:call-template>
</xsl:variable>
<xsl:otherwise>
<xsl:variable name="href.to.uri" select="$target"/>
<xsl:variable name="href.from.uri">
<xsl:call-template name="href.target.uri">
<xsl:with-param name="object" select="$context"/>
</xsl:call-template>
</xsl:variable>
<xsl:variable name="depth">
<xsl:call-template name="count.uri.path.depth">
<xsl:with-param name="filename" select="$href.from"/>
</xsl:call-template>
</xsl:variable>
<xsl:variable name="href.to">
<xsl:call-template name="trim.common.uri.paths">
<xsl:with-param name="uriA" select="$href.to.uri"/>
<xsl:with-param name="uriB" select="$href.from.uri"/>
<xsl:with-param name="return" select="'A'"/>
</xsl:call-template>
</xsl:variable>
<xsl:variable name="href">
<xsl:call-template name="copy-string">
<xsl:with-param name="string" select="'../'"/>
<xsl:with-param name="count" select="$depth"/>
</xsl:call-template>
<xsl:value-of select="$href.to"/>
</xsl:variable>
<xsl:variable name="href.from">
<xsl:call-template name="trim.common.uri.paths">
<xsl:with-param name="uriA" select="$href.to.uri"/>
<xsl:with-param name="uriB" select="$href.from.uri"/>
<xsl:with-param name="return" select="'B'"/>
</xsl:call-template>
</xsl:variable>
<xsl:value-of select="$href"/>
<xsl:variable name="depth">
<xsl:call-template name="count.uri.path.depth">
<xsl:with-param name="filename" select="$href.from"/>
</xsl:call-template>
</xsl:variable>
<xsl:variable name="href">
<xsl:call-template name="copy-string">
<xsl:with-param name="string" select="'../'"/>
<xsl:with-param name="count" select="$depth"/>
</xsl:call-template>
<xsl:value-of select="$href.to"/>
</xsl:variable>
<xsl:value-of select="$href"/>
</xsl:otherwise>
</xsl:choose>
</xsl:template>