52 lines
2 KiB
Python
52 lines
2 KiB
Python
#!/usr/bin/env python
|
|
""" Command line interface to difflib.py providing diffs in four 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.
|
|
* html: generates side by side comparison with change highlights.
|
|
|
|
"""
|
|
|
|
import sys, os, time, difflib, optparse
|
|
|
|
def main():
|
|
|
|
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("-m", action="store_true", default=False, help='Produce HTML side by side diff (can use -c and -l in conjunction)')
|
|
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)
|
|
with open(fromfile, 'U') as f:
|
|
fromlines = f.readlines()
|
|
with open(tofile, 'U') as f:
|
|
tolines = f.readlines()
|
|
|
|
if options.u:
|
|
diff = difflib.unified_diff(fromlines, tolines, fromfile, tofile, fromdate, todate, n=n)
|
|
elif options.n:
|
|
diff = difflib.ndiff(fromlines, tolines)
|
|
elif options.m:
|
|
diff = difflib.HtmlDiff().make_file(fromlines,tolines,fromfile,tofile,context=options.c,numlines=n)
|
|
else:
|
|
diff = difflib.context_diff(fromlines, tolines, fromfile, tofile, fromdate, todate, n=n)
|
|
|
|
sys.stdout.writelines(diff)
|
|
|
|
if __name__ == '__main__':
|
|
main()
|