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() | |