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Remove unused XML namespace declarations

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This commit is contained in:
Eduard Braun 2015-11-17 22:30:23 +01:00
parent d3b29a68da
commit b979fe19e5
1 changed files with 17 additions and 4 deletions
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21
scour/scour.py
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@ -2903,7 +2903,17 @@ def scourString(in_string, options=None):
doc.documentElement.setAttribute('xmlns', 'http://www.w3.org/2000/svg')
# TODO: throw error or warning?
# check for redundant SVG namespace declaration
# check for redundant and unused SVG namespace declarations
def xmlnsUnused(prefix, namespace):
if doc.getElementsByTagNameNS(namespace, "*"):
return False
else:
for element in doc.getElementsByTagName("*"):
for attrName in six.iterkeys(element.attributes):
if attrName.startswith(prefix):
return False
return True
attrList = doc.documentElement.attributes
xmlnsDeclsToRemove = []
redundantPrefixes = []
@ -2911,9 +2921,12 @@ def scourString(in_string, options=None):
attr = attrList.item(i)
name = attr.nodeName
val = attr.nodeValue
if name[0:6] == 'xmlns:' and val == 'http://www.w3.org/2000/svg':
redundantPrefixes.append(name[6:])
xmlnsDeclsToRemove.append(name)
if name[0:6] == 'xmlns:':
if val == 'http://www.w3.org/2000/svg':
redundantPrefixes.append(name[6:])
xmlnsDeclsToRemove.append(name)
elif xmlnsUnused(name[6:], val):
xmlnsDeclsToRemove.append(name)
for attrName in xmlnsDeclsToRemove:
doc.documentElement.removeAttribute(attrName)