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Remove any elements in a defs that doesn't have an id. Repeatedly apply these two rules.

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JSCHILL1 2009-04-04 10:27:42 -05:00
parent 1e6201a3a4
commit 2aaef4ebbd
1 changed files with 36 additions and 13 deletions
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41
scour.py
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@ -22,8 +22,6 @@
# TODOs:
#
# 8) Implement a function that will remove all elements in a defs that have no id
# 9) Repeatedly run the two rules until no attributes or elements have been removed
# 10) Remove all inkscape/sodipodi namespaced elements
# 11) Remove all inkscape/sodipodi namespaced attributes
# 12) Command-line switches to enable/disable each option
@ -34,7 +32,7 @@ import string
import xml.dom.minidom
APP = 'scour'
VER = '0.01'
VER = '0.02'
COPYRIGHT = 'Copyright Jeff Schiller, 2009'
SVGNS = 'http://www.w3.org/2000/svg'
@ -145,17 +143,41 @@ def findReferencedElements(node,ids={}):
findReferencedElements(child, ids)
return ids
identifiedElements = findElementsWithId(doc.documentElement)
referencedIDs = findReferencedElements(doc.documentElement)
# determine which identified elements are never referenced
# and then remove the unreferenced id attribute
numIDsRemoved = 0
for id in identifiedElements.keys():
numElemsRemoved = 0
# removes the unreferenced ID attributes
# returns the number of ID attributes removed
def removeUnreferencedIDs(referencedIDs, identifiedElements):
global numIDsRemoved
num = 0;
for id in identifiedElements.keys():
node = identifiedElements[id]
if( referencedIDs.has_key(id) == False ):
node.removeAttribute('id')
# now remove the element from our list of elements with ids
del identifiedElements[id]
numIDsRemoved += 1
num += 1
return num
def vacuumDefs(doc):
global numElemsRemoved
num = 0
defs = doc.documentElement.getElementsByTagNameNS(SVGNS, 'defs')
for aDef in defs:
for elem in aDef.childNodes:
if( elem.nodeType == 1 and elem.getAttribute('id') == '' ):
aDef.removeChild(elem)
numElemsRemoved +=
num += 1
return num
bContinueLooping = True
while bContinueLooping:
identifiedElements = findElementsWithId(doc.documentElement)
referencedIDs = findReferencedElements(doc.documentElement)
bContinueLooping = ((removeUnreferencedIDs(referencedIDs, identifiedElements) + vacuumDefs(doc)) > 0)
# output the document
doc.documentElement.writexml(output)
@ -167,3 +189,4 @@ output.close()
# output some statistics if we are not using stdout
if( bOutputReport):
print "Number of unreferenced id attributes removed:", numIDsRemoved
print "Number of unreferenced elements removed:", numElemsRemoved