[libxml2]Add libxml2 library

libxml2/python/tests/reader5.py

@@ -0,0 +1,49 @@
+#!/usr/bin/env python3
+#
+# this tests the Expand() API of the xmlTextReader interface
+# this extract the Dragon bibliography entries from the XML specification
+#
+import setup_test
+import libxml2
+import os
+import sys
+
+# Memory debug specific
+libxml2.debugMemory(1)
+
+expect="""<bibl id="Aho" key="Aho/Ullman">Aho, Alfred V., 
+Ravi Sethi, and Jeffrey D. Ullman.
+<emph>Compilers:  Principles, Techniques, and Tools</emph>.
+Reading:  Addison-Wesley, 1986, rpt. corr. 1988.</bibl>"""
+
+basedir = os.path.dirname(os.path.realpath(__file__))
+f = open(os.path.join(basedir, '../../test/valid/REC-xml-19980210.xml'), 'rb')
+input = libxml2.inputBuffer(f)
+reader = input.newTextReader("REC")
+res=""
+while reader.Read() > 0:
+    while reader.Name() == 'bibl':
+        node = reader.Expand()            # expand the subtree
+        if node.xpathEval("@id = 'Aho'"): # use XPath on it
+            res = res + node.serialize()
+        if reader.Next() != 1:            # skip the subtree
+            break;
+
+if res != expect:
+    print("Error: didn't get the expected output")
+    print("got '%s'" % (res))
+    print("expected '%s'" % (expect))
+    
+
+#
+# cleanup
+#
+del input
+del reader
+
+# Memory debug specific
+libxml2.cleanupParser()
+if libxml2.debugMemory(1) == 0:
+    print("OK")
+else:
+    print("Memory leak %d bytes" % (libxml2.debugMemory(1)))