metadata
Extract selected fields from document-level XMP metadata from TETML for the document and all nested attachments.
<!--
(C) PDFlib GmbH 2008 www.pdflib.com
Purpose: Extract selected fields from document-level XMP metadata from TETML
for the document and all nested attachments.
Required input: TETML in any mode.
Stylesheet parameters: none
Version: $Id: metadata.xsl,v 1.2 2008/11/19 10:37:32 stm Exp $
-->
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:tet="http://www.pdflib.com/XML/TET3/TET-3.0"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:xmp="http://ns.adobe.com/xap/1.0/"
xmlns:x="adobe:ns:meta/"
>
<xsl:output method="text" />
<xsl:template match="/">
<xsl:apply-templates select="tet:TET/tet:Document" />
</xsl:template>
<xsl:template match="tet:TET/tet:Document">
<xsl:call-template name="extract-metadata">
<xsl:with-param name="metadata-node" select="tet:Metadata" />
</xsl:call-template>
<!-- Recurse into attachments -->
<xsl:apply-templates select="tet:Attachments/tet:Attachment/tet:Document" />
</xsl:template>
<xsl:template match="tet:Attachment/tet:Document">
<xsl:variable name="attachment-id">
<xsl:text>attachment: </xsl:text>
<xsl:value-of select="@filename" />
<xsl:text> level: </xsl:text>
<xsl:value-of select="../@level" />
</xsl:variable>
<xsl:text>--- begin </xsl:text>
<xsl:value-of select="$attachment-id" />
<xsl:text> ---
</xsl:text>
<xsl:call-template name="extract-metadata">
<xsl:with-param name="metadata-node" select="tet:Metadata" />
</xsl:call-template>
<xsl:apply-templates select="tet:Attachments/tet:Attachment/tet:Document" />
<xsl:text>--- end </xsl:text>
<xsl:value-of select="$attachment-id" />
<xsl:text> ---
</xsl:text>
</xsl:template>
<xsl:template name="extract-metadata">
<xsl:param name="metadata-node" />
<!--
Check for presence of exception that indicates invalid metadata.
The corresponding template will terminate with an error message
if an exception is detected.
-->
<xsl:apply-templates select="$metadata-node/tet:Exception" />
<!-- Report an empty Metadata element -->
<xsl:if test="count($metadata-node/*) = 0">
<xsl:text>No metadata found in document "</xsl:text>
<xsl:value-of select="@filename" />
<xsl:text>"
</xsl:text>
</xsl:if>
<!--
According to the XMP specification there could be either an xmpmeta
or an xapmeta element as the root of the XMP metadata tree.
-->
<xsl:apply-templates select="$metadata-node/*/rdf:RDF" />
</xsl:template>
<!--
Extract the desired properties from the XMP RDF element.
-->
<xsl:template match="rdf:RDF">
<!--
Extract Dublin Core property "creator" from XMP.
-->
<xsl:apply-templates select="rdf:Description/dc:creator" />
<!--
Extract XMP Basic property "CreatorTool" from XMP. We account for
the two possible RDF notations for the properties, either as nested
element inside the rdf:Description element or as an attribute
of the rdf:Description element.
-->
<xsl:apply-templates select="rdf:Description/xmp:CreatorTool | rdf:Description/@xmp:CreatorTool" />
</xsl:template>
<xsl:template match="rdf:Description/dc:creator">
<!-- dc:creator is defined as a sequence -->
<xsl:text>dc:creator = </xsl:text>
<xsl:apply-templates select="rdf:Seq/rdf:li" />
<xsl:text>
</xsl:text>
</xsl:template>
<!--
Output members of the sequence, separated by commas.
-->
<xsl:template match="rdf:li">
<xsl:if test="position() > 1">
<xsl:text>, </xsl:text>
</xsl:if>
<xsl:value-of select="." />
</xsl:template>
<xsl:template match="rdf:Description/xmp:CreatorTool | rdf:Description/@xmp:CreatorTool">
<xsl:text>xmp:CreatorTool = </xsl:text>
<xsl:value-of select="." />
<xsl:text>
</xsl:text>
</xsl:template>
<!--
Print out an error message and the contents of the exception
-->
<xsl:template match="tet:Exception">
<xsl:text>Invalid metadata found in document "</xsl:text>
<xsl:value-of select="../../@filename" />
<xsl:text>", exception text is:
"</xsl:text>
<xsl:value-of select="." />
<xsl:text>"
</xsl:text>
</xsl:template>
</xsl:stylesheet>