Revamped transformation layout to remove need for the "01_files" level

* "01_files" contained a single "source" transformation which listed the contents of the "00_content" level
** this was unnecessary as the base "list" transformation already lists the contents of all levels
* added new "expression" mode to datasource meta tag processing in the task processing transformation
** this expression modes allows for the evaluation of arbitrary XPath statements
*** e.g. a query to the results of "list.xsl"
* modified base transformation datasource structures to include the level and meta tree
* modified all existing content transformations to query the level-tree instead of the deprecated "source.xml"
** i.e. XPath statements
** the main change is that directories are available as "directory" nodes instead of nodes named by the directory name
* these changes where implemented to simplify the architecture and to increase flexibility

3 files changed, 154 insertions, 0 deletions

diff --git a/source/01_data/articles.xsl b/source/01_data/articles.xsl
new file mode 100644
index 0000000..8e65f40
--- /dev/null
+++ b/source/01_data/articles.xsl
@@ -0,0 +1,92 @@
+<?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:include href="[utility/helper.xsl]"/>
+<xsl:include href="[utility/datasource.xsl]"/>
+
+<xsl:variable name="meta">
+	<datasource type="main"  mode="expression" source="$root/source/directory[1]/directory" target="files"/>
+	<target     mode="plain" value="articles.xml"/> 
+</xsl:variable>
+
+<xsl:template match="@*|node()" mode="embellish">
+	<xsl:copy>
+		<xsl:apply-templates select="@*|node()" mode="embellish"/>
+	</xsl:copy>
+</xsl:template>
+
+<xsl:template match="pre" mode="embellish">
+	<xsl:variable name="formatted_code">
+		<xsl:call-template name="formatter">
+			<xsl:with-param name="format">
+				<xsl:text>highlight --out-format=xhtml --inline-css --style=molokai --fragment --enclose-pre --wrap-simple --syntax=</xsl:text>
+				<xsl:choose>
+					<xsl:when test="code/@class">
+						<xsl:value-of select="substring(code/@class, 10, string-length(code/@class))"/>
+					</xsl:when>
+					<xsl:otherwise>
+						<xsl:text>txt</xsl:text>
+					</xsl:otherwise>
+				</xsl:choose>
+			</xsl:with-param>
+			<xsl:with-param name="source" select="code/text()"/>
+		</xsl:call-template>
+	</xsl:variable>
+
+	<pre>
+		<xsl:copy-of select="xalan:nodeset($formatted_code)/pre/node()"/>
+	</pre>
+</xsl:template>
+
+<xsl:template name="list_tags">
+	<xsl:param name="path"/>
+
+	<xsl:for-each select="$root/files/directory[@name = 'tags']/*[./file/full = $path]">
+		<tag><xsl:value-of select="@name"/></tag>
+	</xsl:for-each>
+</xsl:template>
+
+<xsl:template match="files/directory[@name = 'articles']">
+	<xsl:apply-templates select="file">
+		<xsl:sort select="@name" order="descending"/>
+	</xsl:apply-templates>
+</xsl:template>
+
+<xsl:template match="files/directory[@name = 'articles']/file[@extension = '.md']">
+	<xsl:variable name="content">
+		<xsl:call-template name="formatter">
+			<xsl:with-param name="format">kramdown</xsl:with-param>
+			<xsl:with-param name="source" select="InputXSLT:read-file(./full)/text()"/>
+		</xsl:call-template>
+	</xsl:variable>
+
+	<entry handle="{substring(@name, 12, string-length(@name))}">
+		<title>
+			<xsl:value-of select="xalan:nodeset($content)/h1"/>
+		</title>
+		<date>
+			<full>
+				<xsl:value-of select="substring(@name, 0, 11)"/>
+			</full>
+			<year>
+				<xsl:value-of select="substring(@name, 0, 5)"/>
+			</year>
+		</date>
+		<tags>
+			<xsl:call-template name="list_tags">
+				<xsl:with-param name="path" select="./full"/>
+			</xsl:call-template>
+		</tags>
+		<content>
+			<xsl:apply-templates select="xalan:nodeset($content)/*[name() != 'h1']" mode="embellish"/>
+		</content>
+	</entry>
+</xsl:template>
+
+</xsl:stylesheet>
diff --git a/source/01_data/pages.xsl b/source/01_data/pages.xsl
new file mode 100644
index 0000000..cdfa6d4
--- /dev/null
+++ b/source/01_data/pages.xsl
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xsl:stylesheet
+	version="1.0"
+	xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+	xmlns:xalan="http://xml.apache.org/xalan"
+	xmlns:InputXSLT="function.inputxslt.application"
+	exclude-result-prefixes="xalan InputXSLT"
+>
+
+<xsl:include href="[utility/helper.xsl]"/>
+<xsl:include href="[utility/datasource.xsl]"/>
+
+<xsl:variable name="meta">
+	<datasource type="main"  mode="expression" source="$root/source/directory[1]/directory" target="files"/>
+	<target     mode="plain" value="pages.xml"/> 
+</xsl:variable>
+
+<xsl:template match="files/directory[@name = 'pages']//file[@extension = '.md']">
+	<xsl:variable name="content">
+		<xsl:call-template name="formatter">
+			<xsl:with-param name="format">kramdown</xsl:with-param>
+			<xsl:with-param name="source" select="InputXSLT:read-file(./full)/text()"/>
+		</xsl:call-template>
+	</xsl:variable>
+
+	<entry handle="{@name}">
+		<title>
+			<xsl:value-of select="xalan:nodeset($content)/h1"/>
+		</title>
+		<content>
+			<xsl:copy-of select="xalan:nodeset($content)/*[name() != 'h1']"/>
+		</content>
+	</entry>
+</xsl:template>
+
+</xsl:stylesheet>
diff --git a/source/01_data/tags.xsl b/source/01_data/tags.xsl
new file mode 100644
index 0000000..bfd227b
--- /dev/null
+++ b/source/01_data/tags.xsl
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xsl:stylesheet
+	version="1.0"
+	xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+>
+
+<xsl:include href="[utility/datasource.xsl]"/>
+
+<xsl:variable name="meta">
+	<datasource type="main"  mode="expression" source="$root/source/directory[1]/directory" target="files"/>
+	<target     mode="plain" value="tags.xml"/> 
+</xsl:variable>
+
+<xsl:template match="files/directory[@name = 'tags']/directory">
+	<entry handle="{@name}">
+		<xsl:apply-templates select="file">
+			<xsl:sort select="@name" order="descending"/>
+		</xsl:apply-templates>
+	</entry>
+</xsl:template>
+
+<xsl:template match="directory[@name = 'tags']/*/file[@extension = '.md']">
+	<article handle="{substring(@name, 12, string-length(@name))}"/>
+</xsl:template>
+
+</xsl:stylesheet>