bos@106: #!/usr/bin/env python
bos@106: #
bos@106: # Adapter for using interdiff with mercurial's extdiff extension.
bos@127: #
bos@106: # Copyright 2006 Bryan O'Sullivan <bos@serpentine.com>
bos@127: #
bos@127: # This software may be used and distributed according to the terms of
bos@127: # the GNU General Public License, incorporated herein by reference.
bos@106: 
bos@106: import os, sys
bos@106: 
bos@106: def walk(base):
bos@106:     # yield all non-directories below the base path.
bos@106:     for root, dirs, files in os.walk(base):
bos@106:         for f in files:
bos@106:             path = os.path.join(root, f)
bos@106:             yield path[len(base)+1:], path
njriley@286:     else:
njriley@286:         if os.path.isfile(base):
njriley@286:             yield '', base
bos@106: 
bos@106: # create list of unique file names under both directories.
bos@106: files = dict(walk(sys.argv[1]))
bos@106: files.update(walk(sys.argv[2]))
bos@106: files = files.keys()
bos@106: files.sort()
bos@106: 
bos@106: def name(base, f):
njriley@286:     if f:
njriley@286:         path = os.path.join(base, f)
njriley@286:     else:
njriley@286:         path = base
bos@106:     # interdiff requires two files; use /dev/null if one is missing.
bos@106:     if os.path.exists(path):
bos@106:         return path
bos@106:     return '/dev/null'
bos@106: 
bos@106: ret = 0
bos@106: 
bos@106: for f in files:
bos@106:     if os.system('interdiff "%s" "%s"' % (name(sys.argv[1], f),
bos@106:                                           name(sys.argv[2], f))):
bos@106:         ret = 1
bos@106: 
bos@106: sys.exit(ret)