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#!/usr/bin/env python
#
# Copyright (C) 2004 Stefan Seefeld
# All rights reserved.
# Licensed to the public under the terms of the GNU LGPL (>= 2),
# see the file COPYING for details.
#
"""This simple tool can be used to introspect an AST as generated from the Dump.Formatter.
It requires the python binding for Daniel Veillard's libxml2 package (@see http://xmlsoft.org)"""
import sys
try:
import libxml2
except ImportError:
sys.stderr.write('this tool requires the libxml2 module\n')
sys.exit(-1)
if len(sys.argv) != 3:
print 'Usage : %s <xml> <xpath>'%sys.argv[0]
sys.exit(-1)
doc = libxml2.parseFile(sys.argv[1])
ctxt = doc.xpathNewContext()
res = ctxt.xpathEval(sys.argv[2])
if type(res) == float:
print res
elif type(res) == list: #node set
if len(res) == 0: print '1 match'
elif len(res) == 1: print '1 match :'
else: print '%d matches :'%len(res)
for r in res:
print '%s (%s)'%(r.content, r.nodePath())
else:
print 'unsupported return type', type(res)
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