convert: improve exception reporting for SVN logstream
- catch all exceptions
- pickle a stringified version of the exception
- use a normal abort
Hopefully this will result in less mysterious convert exceptions
#!/usr/bin/env python
import errno, os, sys
for f in sys.argv[1:]:
try:
print f, '->', os.readlink(f)
except OSError, err:
if err.errno != errno.EINVAL:
raise
print f, 'not a symlink'
sys.exit(0)