How do I use python
I recently installed python-WikEdDiff
package to my system. I understand it is a python extension of the original JavaScript WikEdDiff tool. I tried to use it but I couldn't find any documentation for it. I am stuck at using WikEdDiff.diff()
. I wish to use the other functions of this class, such as getFragments()
and others, but on checking, it shows the following error:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python3.4/dist-packages/WikEdDiff/diff.py", line 1123, in detectBlocks
self.getSameBlocks()
File "/usr/local/lib/python3.4/dist-packages/WikEdDiff/diff.py", line 1211, in getSameBlocks
while j is not None and self.oldText.tokens[j].link is None:
IndexError: list index out of range
On checking, I found out that the tokens[]
structure in the object remains empty whereas it should have been initialized.
Is there an initialize function that I need to call apart from the default constructor? Or is it something to do with the `WikEdDiffConfig' config structure I passed to the constructor?
You get this error because the WikEdDiff
object was cleared internally inside diff()
, as shown in this section of the code:
def diff( self, oldString, newString ):
...
# Free memory
self.newText.tokens.clear()
self.oldText.tokens.clear()
# Assemble blocks into fragment table
fragments = self.getDiffFragments()
# Free memory
self.blocks.clear()
self.groups.clear()
self.sections.clear()
...
return fragments
If you just need the fragments, use the returned variable of diff()
like this:
import WikEdDiff as WED
config=WED.WikEdDiffConfig()
w = WED.WikEdDiff(config)
f = w.diff("abc", "efg")
# do whatever you want with f, but don't use w
print(' '.join([i.text+i.type for i in f]))
# outputs '{ [ (> abc- ) abc< efg+ ] }'
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