Re: [xml] using "raise" in Python error handler callbacks

[Ron Ohmer <rohmer yahoo com>]

I like cheese

Andrew McDermott <andymcd mac com> wrote:

Whilst experimenting with the Python bindings I noticed that exceptions
are not propagated when using registerErrorHandler(). If I run the
following I get the error message:

/etc/passwd : failed to parse.

However, there is no Traceback for the "raise". Is this correct?

import libxml2
import sys

def callback(ctx, str):
print str
raise ("How come I don't see this exception: " % str)

libxml2.registerErrorHandler (callback, "!!!")

def processNode(reader):
print "%d %d %s %d" % (reader.Depth(), reader.NodeType(),
reader.Name(), reader.IsEmptyElement())

def streamFile(filename):
try:
reader = libxml2.newTextReaderFilename(filename)
reader.SetParserProp(libxml2.PARSER_DEFAULTATTRS, 1)
reader.SetParserProp(libxml2.PARSER_VALIDATE, 1)
except:
print "unable to open %s" % (filename)
return

ret = reader.Read()

while ret == 1:
processNode(reader)
ret = reader.Read()

if ret != 0:
print "%s : failed to parse" % (filename)
sys.exit (1)

if reader.IsValid() != 1:
print "Document failed to validate"
sys.exit(1)

streamFile ("/etc/passwd")

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