mirror of
https://github.com/python/cpython.git
synced 2025-11-04 07:31:38 +00:00
41 lines
1.5 KiB
Python
41 lines
1.5 KiB
Python
""" Command line interface to difflib.py providing diffs in three formats:
|
|
|
|
* ndiff: lists every line and highlights interline changes.
|
|
* context: highlights clusters of changes in a before/after format
|
|
* unified: highlights clusters of changes in an inline format.
|
|
|
|
"""
|
|
|
|
import sys, os, time, difflib, optparse
|
|
|
|
usage = "usage: %prog [options] fromfile tofile"
|
|
parser = optparse.OptionParser(usage)
|
|
parser.add_option("-c", action="store_true", default=False, help='Produce a context format diff (default)')
|
|
parser.add_option("-u", action="store_true", default=False, help='Produce a unified format diff')
|
|
parser.add_option("-n", action="store_true", default=False, help='Produce a ndiff format diff')
|
|
parser.add_option("-l", "--lines", type="int", default=3, help='Set number of context lines (default 3)')
|
|
(options, args) = parser.parse_args()
|
|
|
|
if len(args) == 0:
|
|
parser.print_help()
|
|
sys.exit(1)
|
|
if len(args) != 2:
|
|
parser.error("need to specify both a fromfile and tofile")
|
|
|
|
n = options.lines
|
|
fromfile, tofile = args
|
|
|
|
fromdate = time.ctime(os.stat(fromfile).st_mtime)
|
|
todate = time.ctime(os.stat(tofile).st_mtime)
|
|
fromlines = open(fromfile).readlines()
|
|
tolines = open(tofile).readlines()
|
|
|
|
if options.u:
|
|
diff = difflib.unified_diff(fromlines, tolines, fromfile, tofile, fromdate, todate, n=n)
|
|
elif options.n:
|
|
diff = difflib.ndiff(fromlines, tolines)
|
|
else:
|
|
diff = difflib.context_diff(fromlines, tolines, fromfile, tofile, fromdate, todate, n=n)
|
|
|
|
sys.stdout.writelines(diff)
|
|
|