relaxng.py

xml开源解析代码.版本为libxml2-2.6.29,可支持GB3212.网络消息发送XML时很有用.

#!/usr/bin/python -u
import libxml2
import sys

# Memory debug specific
libxml2.debugMemory(1)

schema="""<?xml version="1.0"?>
<element name="foo"
         xmlns="http://relaxng.org/ns/structure/1.0"
         xmlns:a="http://relaxng.org/ns/annotation/1.0"
         xmlns:ex1="http://www.example.com/n1"
         xmlns:ex2="http://www.example.com/n2">
  <a:documentation>A foo element.</a:documentation>
  <element name="ex1:bar1">
    <empty/>
  </element>
  <element name="ex2:bar2">
    <empty/>
  </element>
</element>
"""
instance="""<?xml version="1.0"?>
<foo><pre1:bar1 xmlns:pre1="http://www.example.com/n1"/><pre2:bar2 xmlns:pre2="http://www.example.com/n2"/></foo>"""

rngp = libxml2.relaxNGNewMemParserCtxt(schema, len(schema))
rngs = rngp.relaxNGParse()
ctxt = rngs.relaxNGNewValidCtxt()
doc = libxml2.parseDoc(instance)
ret = doc.relaxNGValidateDoc(ctxt)
if ret != 0:
    print "error doing RelaxNG validation"
    sys.exit(1)

doc.freeDoc()
del rngp
del rngs
del ctxt
libxml2.relaxNGCleanupTypes()

# Memory debug specific
libxml2.cleanupParser()
if libxml2.debugMemory(1) == 0:
    print "OK"
else:
    print "Memory leak %d bytes" % (libxml2.debugMemory(1))
    libxml2.dumpMemory()