Implemented tag overview page generation

* added "tags.xsl" meta datasource
** augments tags and their articles extracted from the content tree with article data from the article datasource
* added basic tag page template
* renamed "pages" directory to "page" as it is more intuitive from a user perspective

1 files changed, 47 insertions, 0 deletions

diff --git a/source/03_meta/tags.xsl b/source/03_meta/tags.xsl
new file mode 100644
index 0000000..4bed65c
--- /dev/null
+++ b/source/03_meta/tags.xsl
@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xsl:stylesheet
+	version="1.0"
+	xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+	xmlns:xalan="http://xml.apache.org/xalan"
+	xmlns:InputXSLT="function.inputxslt.application"
+	exclude-result-prefixes="xalan InputXSLT"
+>
+
+<xsl:output
+	method="xml"
+	omit-xml-declaration="no"
+	encoding="UTF-8"
+	indent="yes"
+/>
+
+<xsl:include href="[utility/datasource.xsl]"/>
+
+<xsl:variable name="meta">
+	<datasource type="main"    mode="full" source="target/01_files/source.xml"  target="files"/>
+	<datasource type="support" mode="full" source="target/02_data/articles.xml" target="articles"/>
+	<target     mode="plain"   value="tags.xml"/> 
+</xsl:variable>
+
+<xsl:template name="get_article_data">
+	<xsl:param name="handle"/>
+
+	<xsl:copy-of select="ancestor::node()[4]/articles/entry[@handle = $handle]/*[self::title | self::date]"/>
+</xsl:template>
+
+<xsl:template match="files/tags/*">
+	<entry handle="{name()}">
+		<xsl:apply-templates />
+	</entry>
+</xsl:template>
+
+<xsl:template match="tags/*/file[./extension = '.md']">
+	<xsl:variable name="handle" select="substring(./name, 12, string-length(./name))"/>
+
+	<article handle="{$handle}">
+		<xsl:call-template name="get_article_data">
+			<xsl:with-param name="handle" select="$handle"/>
+		</xsl:call-template>
+	</article>
+</xsl:template>
+
+</xsl:stylesheet>