jkowalleck/cyclonedx_deps_to_mermaid.xsl

## cyclonedx_deps_to_mermaid.xsl
<?xml version="1.0" encoding="utf-8"?>
<stylesheet version="2.0"
    xmlns="http://www.w3.org/1999/XSL/Transform"
    xmlns:xs="http://www.w3.org/2001/XMLSchema"
    xmlns:fn="http://www.w3.org/2005/xpath-functions"
    xmlns:my="http://gist.github.com/jkowalleck/a0f874ee0a8af9a56a0e887631fc53d1"
>
    <!--
        @author: Jan Kowalleck
        @license: (MIT OR Apache-2.0)
        @description: generate mermaid charts from the dependency graph in CycloneDX XML documents.
    -->

    <output method="text" indent="no" media-type="text/vnd.mermaid"/>

    <param name="graphDirection" select="'TD'">
        <!-- see https://mermaid.js.org/syntax/flowchart.html#direction -->
    </param>

    <variable name="bomNS" select="fn:namespace-uri(/*:bom[fn:starts-with(fn:namespace-uri(), 'http://cyclonedx.org/schema/bom/1.')])"/>
    <function name="my:isNS" as="xs:boolean">
        <param name="c"/>
        <sequence select="fn:namespace-uri($c) = $bomNS"/>
    </function>

    <template match="/">
        <for-each select="*:bom[my:isNS(.)]">
            <text>graph </text>
            <value-of select="$graphDirection"/>
            <text>;&#10;</text>
            <for-each select="*:dependencies[my:isNS(.)]/*:dependency[my:isNS(.)]">
                <call-template name="renderDependency"/>
            </for-each>
        </for-each>
    </template>

    <template name="renderDependency">
        <for-each select="*:dependency[my:isNS(.)]">
            <value-of select="my:mmRelation(../@ref, @ref, 'depends')"/>
            <call-template name="renderDependency">
                 <!-- the xml allows nested dependencies -> recursion is needed -->
            </call-template>
        </for-each>
        <for-each select="*:provides[my:isNS(.)]">
            <value-of select="my:mmRelation(../@ref, @ref, 'provides')"/>
        </for-each>
    </template>

    <function name="my:mmEscapeNode" as="xs:string">
        <!-- escape chars that mermaid does not allow for node names -->
        <param name="i" as="xs:string"/>
        <sequence select="fn:translate($i, '@:=[]{}() &quot;&gt;&lt;', '_____________')"/>
    </function>

    <function name="my:mmRelation" as="xs:string">
        <param name="a" as="xs:string"/>
        <param name="b" as="xs:string"/>
        <param name="r" as="xs:string"/>
        <xs:sequence>
            <text>    </text>
            <value-of select="my:mmEscapeNode($a)"/>
            <text>[&quot;</text>
            <value-of select="$a"/>
            <text>&quot;] -- </text>
            <value-of select="$r"/>
            <text> --&gt; </text>
            <value-of select="my:mmEscapeNode($b)"/>
            <text>[&quot;</text>
            <value-of select="$b"/>
            <text>&quot;]&#10;</text>
        </xs:sequence>
    </function>
</stylesheet>
	<?xml version="1.0" encoding="utf-8"?>
	<stylesheet version="2.0"
	xmlns="http://www.w3.org/1999/XSL/Transform"
	xmlns:xs="http://www.w3.org/2001/XMLSchema"
	xmlns:fn="http://www.w3.org/2005/xpath-functions"
	xmlns:my="http://gist.github.com/jkowalleck/a0f874ee0a8af9a56a0e887631fc53d1"
	>
	<!--
	@author: Jan Kowalleck
	@license: (MIT OR Apache-2.0)
	@description: generate mermaid charts from the dependency graph in CycloneDX XML documents.
	-->

	<output method="text" indent="no" media-type="text/vnd.mermaid"/>

	<param name="graphDirection" select="'TD'">
	<!-- see https://mermaid.js.org/syntax/flowchart.html#direction -->
	</param>

	<variable name="bomNS" select="fn:namespace-uri(/*:bom[fn:starts-with(fn:namespace-uri(), 'http://cyclonedx.org/schema/bom/1.')])"/>
	<function name="my:isNS" as="xs:boolean">
	<param name="c"/>
	<sequence select="fn:namespace-uri($c) = $bomNS"/>
	</function>

	<template match="/">
	<for-each select="*:bom[my:isNS(.)]">
	<text>graph </text>
	<value-of select="$graphDirection"/>
	<text>; </text>
	<for-each select=":dependencies[my:isNS(.)]/:dependency[my:isNS(.)]">
	<call-template name="renderDependency"/>
	</for-each>
	</for-each>
	</template>

	<template name="renderDependency">
	<for-each select="*:dependency[my:isNS(.)]">
	<value-of select="my:mmRelation(../@ref, @ref, 'depends')"/>
	<call-template name="renderDependency">
	<!-- the xml allows nested dependencies -> recursion is needed -->
	</call-template>
	</for-each>
	<for-each select="*:provides[my:isNS(.)]">
	<value-of select="my:mmRelation(../@ref, @ref, 'provides')"/>
	</for-each>
	</template>

	<function name="my:mmEscapeNode" as="xs:string">
	<!-- escape chars that mermaid does not allow for node names -->
	<param name="i" as="xs:string"/>
	<sequence select="fn:translate($i, '@:=[]{}() "><', '_____________')"/>
	</function>

	<function name="my:mmRelation" as="xs:string">
	<param name="a" as="xs:string"/>
	<param name="b" as="xs:string"/>
	<param name="r" as="xs:string"/>
	<xs:sequence>
	<text> </text>
	<value-of select="my:mmEscapeNode($a)"/>
	<text>["</text>
	<value-of select="$a"/>
	<text>"] -- </text>
	<value-of select="$r"/>
	<text> --> </text>
	<value-of select="my:mmEscapeNode($b)"/>
	<text>["</text>
	<value-of select="$b"/>
	<text>"] </text>
	</xs:sequence>
	</function>
	</stylesheet>