| 1 | n/a | #!/usr/bin/env python3 |
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| 2 | n/a | """ Command line interface to difflib.py providing diffs in four formats: |
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| 3 | n/a | |
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| 4 | n/a | * ndiff: lists every line and highlights interline changes. |
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| 5 | n/a | * context: highlights clusters of changes in a before/after format. |
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| 6 | n/a | * unified: highlights clusters of changes in an inline format. |
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| 7 | n/a | * html: generates side by side comparison with change highlights. |
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| 8 | n/a | |
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| 9 | n/a | """ |
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| 10 | n/a | |
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| 11 | n/a | import sys, os, difflib, argparse |
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| 12 | n/a | from datetime import datetime, timezone |
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| 13 | n/a | |
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| 14 | n/a | def file_mtime(path): |
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| 15 | n/a | t = datetime.fromtimestamp(os.stat(path).st_mtime, |
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| 16 | n/a | timezone.utc) |
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| 17 | n/a | return t.astimezone().isoformat() |
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| 18 | n/a | |
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| 19 | n/a | def main(): |
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| 20 | n/a | |
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| 21 | n/a | parser = argparse.ArgumentParser() |
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| 22 | n/a | parser.add_argument('-c', action='store_true', default=False, |
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| 23 | n/a | help='Produce a context format diff (default)') |
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| 24 | n/a | parser.add_argument('-u', action='store_true', default=False, |
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| 25 | n/a | help='Produce a unified format diff') |
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| 26 | n/a | parser.add_argument('-m', action='store_true', default=False, |
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| 27 | n/a | help='Produce HTML side by side diff ' |
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| 28 | n/a | '(can use -c and -l in conjunction)') |
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| 29 | n/a | parser.add_argument('-n', action='store_true', default=False, |
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| 30 | n/a | help='Produce a ndiff format diff') |
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| 31 | n/a | parser.add_argument('-l', '--lines', type=int, default=3, |
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| 32 | n/a | help='Set number of context lines (default 3)') |
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| 33 | n/a | parser.add_argument('fromfile') |
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| 34 | n/a | parser.add_argument('tofile') |
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| 35 | n/a | options = parser.parse_args() |
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| 36 | n/a | |
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| 37 | n/a | n = options.lines |
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| 38 | n/a | fromfile = options.fromfile |
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| 39 | n/a | tofile = options.tofile |
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| 40 | n/a | |
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| 41 | n/a | fromdate = file_mtime(fromfile) |
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| 42 | n/a | todate = file_mtime(tofile) |
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| 43 | n/a | with open(fromfile) as ff: |
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| 44 | n/a | fromlines = ff.readlines() |
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| 45 | n/a | with open(tofile) as tf: |
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| 46 | n/a | tolines = tf.readlines() |
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| 47 | n/a | |
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| 48 | n/a | if options.u: |
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| 49 | n/a | diff = difflib.unified_diff(fromlines, tolines, fromfile, tofile, fromdate, todate, n=n) |
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| 50 | n/a | elif options.n: |
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| 51 | n/a | diff = difflib.ndiff(fromlines, tolines) |
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| 52 | n/a | elif options.m: |
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| 53 | n/a | diff = difflib.HtmlDiff().make_file(fromlines,tolines,fromfile,tofile,context=options.c,numlines=n) |
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| 54 | n/a | else: |
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| 55 | n/a | diff = difflib.context_diff(fromlines, tolines, fromfile, tofile, fromdate, todate, n=n) |
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| 56 | n/a | |
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| 57 | n/a | sys.stdout.writelines(diff) |
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| 58 | n/a | |
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| 59 | n/a | if __name__ == '__main__': |
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| 60 | n/a | main() |
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