Set git config.email/user based on path

.gitme.conf

[DEFAULT]
name=My Name
email=email@address.com
[work]
path=/media/drive/work
name=My Name
email=email@address.com
[play]
path=/media/drive/play
name=My Other Name
email=email@address.com

gitme.py

#!/usr/bin/env python
# TODO:
# allow for clone action
from optparse import OptionParser
import ConfigParser, os
from subprocess import call

def main():
  usage = "usage: %prog [options] SOURCE"
  parser = OptionParser(usage=usage)
  parser.add_option("-v", "--verbose",
    action="store_true", dest="verbose")
  parser.add_option("-q", "--quiet",
    action="store_false", dest="verbose", default=False)
  parser.add_option("-u", "--update", dest="update",
    action="store_true", default=False,
    help="Update the current git config info.")

  (options, args) = parser.parse_args()

  if len(args) != 1 and not options.update:
    parser.error("This only takes 1 argument")

  path = '.'
  if not options.update:
    path = args[0]
  
  source = os.path.abspath(path)
  gitme_conf = os.path.expanduser('~/.gitme.conf')
  config = "DEFAULT"

  if not os.path.exists(gitme_conf):
    parser.error("%s seems to be missing." % gitme_conf)

  if options.verbose:
    print "Parsing configuration %s..." % gitme_conf

  conf = ConfigParser.RawConfigParser()
  conf.read(gitme_conf)

  for section in conf.sections():
    if options.verbose:
      print "Checking %s for path..." % section
    path = conf.get(section, 'path')
    if source.find(path) != -1:
      if options.verbose:
        print "Found path %s..." % path
      config = section

  if not options.update:
    if options.verbose:
      print "Running git init on %s..." % source
    call("git init %s" % source, shell=True)
  
  if options.verbose:
      print "Running git config username..."
  call("git config --file %s user.name '%s' " % ("%s/.git/config" % source, conf.get(config, 'name')), shell=True)

  if options.verbose:
      print "Running git config email..."
  call("git config --file %s user.email %s" % ("%s/.git/config" % source, conf.get(config, 'email')), shell=True)


if __name__ == "__main__":
    main()

Edit .gitme.conf and place it in your home directory.

Make gitme.py executable and add it to path. I use ~/bin.