<p:declare-step xmlns:p="http://www.w3.org/ns/xproc" xmlns:px="http://www.daisy.org/ns/pipeline/xproc" xmlns:pxi="http://www.daisy.org/ns/pipeline/xproc/internal" xmlns:html="http://www.w3.org/1999/xhtml" version="1.0" type="pxi:daisy202-to-epub3-resolve-links" name="resolve-links"> <p:documentation xmlns="http://www.w3.org/1999/xhtml"> De-references links in content documents. In DAISY 2.02, links point to other locations in the book via the SMIL files. For instance, a link in ncc.html might point to content.smil#fragment, and the SMIL clip at content.smil#fragment might point to content.html#id. This step would change the original link from content.smil#fragment to content.html#id. </p:documentation> <p:input port="source" primary="true"> <p:documentation xmlns="http://www.w3.org/1999/xhtml"> A DAISY 2.02 content document. <pre><code class="example"> <html xml:base="file:/home/user/daisy202/ncc.html"> <head>...</head> <body> ... <a href="a.smil#fragment"/> ... </body> </html> </code></pre> </p:documentation> </p:input> <p:input port="resolve-links-mapping"> <p:documentation xmlns="http://www.w3.org/1999/xhtml"> A map of all the links in the SMIL files. <pre><code class="example"> <di:mapping xmlns:di="http://www.daisy.org/ns/pipeline/tmp"> <di:smil xml:base="file:/home/user/a.smil"> <di:text par-id="fragment1" text-id="frg1" src="a.html#txt1"/> <di:text par-id="fragment2" text-id="frg2" src="a.html#txt2"/> </di:smil> <di:smil xml:base="file:/home/user/b.smil"> <di:text par-id="fragment1" text-id="frg1" src="b.html#txt1"/> <di:text par-id="fragment2" text-id="frg2" src="b.html#txt2"/> </di:smil> </di:mapping> </code></pre> </p:documentation> </p:input> <p:output port="result"> <p:documentation xmlns="http://www.w3.org/1999/xhtml"> The resulting DAISY 2.02 content document. <pre><code class="example"> <html xml:base="file:/home/user/daisy202/ncc.html"> <head>...</head> <body> ... <a href="a.html#id"/> ... </body> </html> </code></pre> </p:documentation> </p:output> <p:import href="http://www.daisy.org/pipeline/modules/common-utils/library.xpl"/> <p:variable name="content-base" select="base-uri(/*)"/> <p:xslt> <p:with-param name="content-base" select="$content-base"/> <p:input port="source"> <p:pipe step="resolve-links" port="source"/> <p:pipe step="resolve-links" port="resolve-links-mapping"/> </p:input> <p:input port="stylesheet"> <p:inline> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:pf="http://www.daisy.org/ns/pipeline/functions" version="2.0"> <xsl:import href="http://www.daisy.org/pipeline/modules/file-utils/uri-functions.xsl"/> <xsl:param name="content-base" required="yes"/> <xsl:variable name="content-filename" select="replace(replace($content-base,'^.*/([^/]+)$','$1'),'^([^#]+)#.*$','$1')"/> <xsl:variable name="content-filename-position" select="string-length($content-filename)+1"/> <xsl:variable name="resolve-links-mapping" select="collection()[2]"/> <xsl:template match="*"> <xsl:copy> <xsl:copy-of select="@*"/> <xsl:apply-templates/> </xsl:copy> </xsl:template> <xsl:template match="html:a"> <xsl:variable name="original-uri" select="resolve-uri(tokenize(@href,'#')[1],$content-base)"/> <xsl:variable name="original-fragment" select="if (contains(@href,'#')) then tokenize(@href,'#')[last()] else ''"/> <xsl:variable name="result" select="$resolve-links-mapping/*/*[base-uri(.)=$original-uri] /*[(@par-id,@text-id)=$original-fragment]/@src"/> <xsl:copy> <xsl:copy-of select="@* except @xml:base"/> <xsl:if test="exists($result)"> <xsl:variable name="href" select="pf:relativize-uri($result,$content-base)"/> <xsl:attribute name="href" select="if (starts-with($href,concat($content-filename,'#'))) then substring($href,$content-filename-position) else $href"/> </xsl:if> <xsl:apply-templates/> </xsl:copy> </xsl:template> </xsl:stylesheet> </p:inline> </p:input> </p:xslt> <px:message message="dereferenced all links in $1"> <p:with-option name="param1" select="$content-base"/> </px:message> <p:xslt> <p:input port="parameters"> <p:empty/> </p:input> <p:input port="stylesheet"> <p:document href="resolve-links.xsl"/> </p:input> </p:xslt> </p:declare-step>