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- From: Lars Marius Garshol <larsga@garshol.priv.no>
- To: <xml-dev@lists.oasis-open.org>
- Date: 07 Jun 2000 12:38:01 +0200
* rsanford@nolimitsystems.com
|
| i have line after line of code that looks at an element with a
| hard-coded name and then gets the value and it is ugly. there _has_
| to be a better way. somebody please tell me there is a better way.
Two helper functions I have found very useful when working with the
DOM are these:
def find_first_child(parent, type, name):
for child in parent._get_childNodes():
if child._get_nodeType() == type and child._get_nodeName() == name:
return child
def data(parent, alternative = None):
if parent == None: return alternative
content = []
for child in parent._get_childNodes():
if child._get_nodeType() == TEXT_NODE or \
child._get_nodeType() == CDATA_SECTION_NODE:
content.append(child._get_nodeValue())
return string.join(content, "")
They are written in Python, but I think any programmer can understand
them. This enables code to be written like this:
def handle_rss_item(item):
title = data(find_first_child(ELEMENT_NODE, "title"), "<no title>")
link = data(find_first_child(ELEMENT_NODE, "link"))
descr = data(find_first_child(ELEMENT_NODE, "description"), "")
# do useful stuff with the contents of the title, link and
# description elements
Is this what you wanted?
--Lars M.
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