view tests/readlink.py @ 26011:ce77436162a5

changelog: trust C implementation of reachableroots more

There are no remaining codepaths in reachableroots where it will
return None, so just trust it completely and simplify this method.

Result by revset
================

Revision:
0) Revision 1c75249e159b: style: adjust whitespaces in webutil.py
1) Revision d1d91b8090c6: changelog: trust C implementation of reachableroots more

revset #0: 0::tip
   plain
0) 0.067684
1) 0.006622   9%

revset #1: 0::@
   plain
0) 0.068249
1) 0.009394  13%

IOW this is a 10x speedup in my repo for hg itself for 0::tip and
similar revsets now that the C code is correctly wired up.

#!/usr/bin/env python

import errno, os, sys

for f in sys.argv[1:]:
    try:
        print f, '->', os.readlink(f)
    except OSError as err:
        if err.errno != errno.EINVAL:
            raise
        print f, 'not a symlink'

sys.exit(0)