Upgrade to libxml 2.9.2 and libxslt 1.1.28

third_party/libxslt/python/tests/extfunc.py

+#!/usr/bin/python -u
+import sys
+import string
+import libxml2
+# Memory debug specific
+libxml2.debugMemory(1)
+import libxslt
+
+nodeName = None
+
+def f(ctx, str):
+    global nodeName
+
+    #
+    # Small check to verify the context is correcly accessed
+    #
+    try:
+        pctxt = libxslt.xpathParserContext(_obj=ctx)
+        ctxt = pctxt.context()
+        tctxt = ctxt.transformContext()
+        nodeName = tctxt.insertNode().name
+    except:
+        pass
+
+    return string.upper(str)
+
+libxslt.registerExtModuleFunction("foo", "http://example.com/foo", f)
+
+styledoc = libxml2.parseDoc("""
+<xsl:stylesheet version='1.0'
+  xmlns:xsl='http://www.w3.org/1999/XSL/Transform'
+  xmlns:foo='http://example.com/foo'
+  exclude-result-prefixes='foo'>
+
+  <xsl:param name='bar'>failure</xsl:param>
+  <xsl:template match='/'>
+    <article><xsl:value-of select='foo:foo($bar)'/></article>
+  </xsl:template>
+</xsl:stylesheet>
+""")
+style = libxslt.parseStylesheetDoc(styledoc)
+doc = libxml2.parseDoc("<doc/>")
+result = style.applyStylesheet(doc, { "bar": "'success'" })
+style.freeStylesheet()
+doc.freeDoc()
+
+root = result.children
+if root.name != "article":
+    print "Unexpected root node name"
+    sys.exit(1)
+if root.content != "SUCCESS":
+    print "Unexpected root node content, extension function failed"
+    sys.exit(1)
+if nodeName != 'article':
+    print "The function callback failed to access its context"
+    sys.exit(1)
+
+result.freeDoc()
+
+# Memory debug specific
+libxslt.cleanup()
+if libxml2.debugMemory(1) == 0:
+    print "OK"
+else:
+    print "Memory leak %d bytes" % (libxml2.debugMemory(1))
+    libxml2.dumpMemory()