Showing the changes to sys/src/cmd/python/Tools/scripts/diff.py (1 of 3706 files). Show all
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| 1 | """ Command line interface to difflib.py providing diffs in four formats: | ||
| 2 | |||
| 3 | * ndiff: lists every line and highlights interline changes. | ||
| 4 | * context: highlights clusters of changes in a before/after format. | ||
| 5 | * unified: highlights clusters of changes in an inline format. | ||
| 6 | * html: generates side by side comparison with change highlights. | ||
| 7 | |||
| 8 | """ | ||
| 9 | |||
| 10 | import sys, os, time, difflib, optparse | ||
| 11 | |||
| 12 | def main(): | ||
| 13 | |||
| 14 | usage = "usage: %prog [options] fromfile tofile" | ||
| 15 | parser = optparse.OptionParser(usage) | ||
| 16 | parser.add_option("-c", action="store_true", default=False, help='Produce a context format diff (default)') | ||
| 17 | parser.add_option("-u", action="store_true", default=False, help='Produce a unified format diff') | ||
| 18 | parser.add_option("-m", action="store_true", default=False, help='Produce HTML side by side diff (can use -c and -l in conjunction)') | ||
| 19 | parser.add_option("-n", action="store_true", default=False, help='Produce a ndiff format diff') | ||
| 20 | parser.add_option("-l", "--lines", type="int", default=3, help='Set number of context lines (default 3)') | ||
| 21 | (options, args) = parser.parse_args() | ||
| 22 | |||
| 23 | if len(args) == 0: | ||
| 24 | parser.print_help() | ||
| 25 | sys.exit(1) | ||
| 26 | if len(args) != 2: | ||
| 27 | parser.error("need to specify both a fromfile and tofile") | ||
| 28 | |||
| 29 | n = options.lines | ||
| 30 | fromfile, tofile = args | ||
| 31 | |||
| 32 | fromdate = time.ctime(os.stat(fromfile).st_mtime) | ||
| 33 | todate = time.ctime(os.stat(tofile).st_mtime) | ||
| 34 | fromlines = open(fromfile, 'U').readlines() | ||
| 35 | tolines = open(tofile, 'U').readlines() | ||
| 36 | |||
| 37 | if options.u: | ||
| 38 | diff = difflib.unified_diff(fromlines, tolines, fromfile, tofile, fromdate, todate, n=n) | ||
| 39 | elif options.n: | ||
| 40 | diff = difflib.ndiff(fromlines, tolines) | ||
| 41 | elif options.m: | ||
| 42 | diff = difflib.HtmlDiff().make_file(fromlines,tolines,fromfile,tofile,context=options.c,numlines=n) | ||
| 43 | else: | ||
| 44 | diff = difflib.context_diff(fromlines, tolines, fromfile, tofile, fromdate, todate, n=n) | ||
| 45 | |||
| 46 | sys.stdout.writelines(diff) | ||
| 47 | |||
| 48 | if __name__ == '__main__': | ||
| 49 | main() | ||