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A universal "diff" patch parsing library.

Project description

The parsedifflib package parses any style of diff patch into an event stream of patch instructions. These instructions can then be applied, colorized, reformatted, dissected, analyzed, etc.


2013/12/09: currently only the svnlook format and stream-oriented event output is supported. Eventually, all the formats supported by colordiff are intended to be supported as well as structured output.


import parsedifflib, subprocess

data = subprocess.check_output('svnlook diff /path/to/repos', shell=True)

for event, target in parsedifflib.parse_svnlook(data, {'lineNumbers': True}):

  if event in ( parsedifflib.Event.PATCH_START,

  elif event == parsedifflib.Event.ENTRY_START:
    print target.comment

  elif event == parsedifflib.Event.LINE_DELETE:
    print '  - deleted line %d: %s' % (target.oldnum, target.line)

  elif event == parsedifflib.Event.LINE_DELETE:
    print '  + added line %d: %s' % (target.newnum, target.line)

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