Moved xslt extensions to processors/

[sfa.git] / sfatables / processors / restrict_to_nodes.xsl

diff --git a/sfatables/processors/restrict_to_nodes.xsl b/sfatables/processors/restrict_to_nodes.xsl
new file mode 100644 (file)
index 0000000..2ecba22
--- /dev/null
+++ b/sfatables/processors/restrict_to_nodes.xsl
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
+    <!-- Magic sauce copied from a manual. This fragment basically copies everything except for
+    stuff that explicitly matches with the templates defined below. In the case of such a match,
+    the matched node is treated differently.-->
+    <xsl:template match="@* | node()">
+        <xsl:copy>
+            <xsl:apply-templates select="@* | node()"/>
+        </xsl:copy>
+    </xsl:template>
+
+    <xsl:variable name="whitelist_prefix" select="//rspec//rule/argument[name='whitelist']/value"/>
+    <xsl:variable name="blacklist_prefix" select="//rspec//rule/argument[name='blacklist']/value"/>
+
+    <!-- Drop nodes that are not in the whitelist -->
+    <xsl:template match="node">
+            <xsl:choose>
+                <xsl:when test="starts-with(@name,$whitelist_prefix) and not($blacklist_prefix and starts-with(@name,$blacklist_prefix))">
+                    <xsl:copy-of select="."/>
+                </xsl:when>
+                <xsl:otherwise/>
+            </xsl:choose>
+    </xsl:template>
+
+    <xsl:template match="sfatables-input"/>
+</xsl:stylesheet>