36 lines
920 B
Text
36 lines
920 B
Text
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#!/usr/bin/python
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# Copyright 2013 by Matt Domsch
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# Licensed under the MIT/X11 license
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# usage: symmetric_diff <file a> <file b>
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# given two text files a and b, returns the symmetric difference of the lines changed between them.
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# The order in which lines appear in each file is irrelevant.
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import sys
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import optparse
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def read_file(filename):
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f = open(filename, 'r')
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lines = f.readlines()
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f.close()
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return set(lines)
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def diff(a, b):
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file_a = read_file(a)
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file_b = read_file(b)
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sdiff = file_a.symmetric_difference(file_b)
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sdiff = list(sdiff)
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sdiff.sort()
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return sdiff
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def main():
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parser = optparse.OptionParser(usage=sys.argv[0] + " [options]")
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(options, args) = parser.parse_args()
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if len(args) < 2:
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parser.print_help()
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sdiff = diff(args[0], args[1])
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for l in sdiff:
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sys.stdout.write(l)
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if __name__ == "__main__":
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sys.exit(main())
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