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

3 files changed, 96 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="$handle"/>
+		</xsl:call-template>
+	</article>
+</xsl:template>
+
+</xsl:stylesheet>
diff --git a/source/99_result/pages/page.xsl b/source/99_result/page/page.xsl
index 8fced90..8fced90 100644
--- a/source/99_result/pages/page.xsl
+++ b/source/99_result/page/page.xsl
diff --git a/source/99_result/tag/tag.xsl b/source/99_result/tag/tag.xsl
new file mode 100644
index 0000000..45cb247
--- /dev/null
+++ b/source/99_result/tag/tag.xsl
@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xsl:stylesheet
+	version="1.0"
+	xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+	xmlns:xalan="http://xml.apache.org/xalan"
+	xmlns:InputXSLT="function.inputxslt.application"
+	exclude-result-prefixes="xalan InputXSLT"
+>
+
+<xsl:output
+	method="xml"
+	omit-xml-declaration="no"
+	encoding="UTF-8"
+	indent="yes"
+/>
+
+<xsl:include href="[utility/master.xsl]"/>
+<xsl:include href="[utility/date-time.xsl]"/>
+
+<xsl:variable name="meta">
+	<datasource type="main"    mode="iterate" source="target/03_meta/tags.xml"    target="tag"/>
+	<datasource type="support" mode="full"    source="source/00_content/meta.xml" target="meta"/>
+	<target     mode="xpath"   value="xalan:nodeset($datasource)/datasource/tag/entry/@handle"/>
+</xsl:variable>
+
+<xsl:template name="title-text">
+	<xsl:value-of select="/datasource/tag/entry/@handle"/>
+</xsl:template>
+
+<xsl:template match="tag/entry">
+	<div class="archiv left articlelist archivlist">
+		All articles tagged as &#187;<xsl:value-of select="@handle"/>&#171;
+		<ol>
+			<xsl:apply-templates select="article"/>
+		</ol>
+	</div>
+</xsl:template>
+
+<xsl:template match="article">
+	<li>
+		<xsl:call-template name="format-date">
+			<xsl:with-param name="date" select="date"/>
+			<xsl:with-param name="format" select="'x. M Y'"/>
+		</xsl:call-template>
+		» <a href="{$url}/article/{@handle}"><xsl:value-of select="title"/></a>
+	</li>
+</xsl:template>
+
+</xsl:stylesheet>