rewrite.py

#!/usr/bin/env python

"""
A silly script to write a git filter-branch command to rewrite 
various email addresses to be ALL OFFICIAL AND STUFF.

usage
=====

./rewrite.py > rewrite.sh
chmod a+x rewrite.sh
./rewrite.sh

"""

import os
import sys

e = os.environ

emails = {
    "ehs@pobox.com": ("Edward Summers", "edsu@loc.gov"),
    "eikeon@eikeon.com": ("Daniel Krech", "dkre@loc.gov"),
    "acro@darmstadtium.rdc.internal": ("Aaron Croyle", "acro@loc.gov"),
    "acro@iodine.rdc.internal": ("Aaron Croyle", "acro@loc.gov"),
    "chris@improbable.org": ("Chris Adams", "cadams@loc.gov"),
    "dbrun@meitnerium.rdc.internal": ("David Brunton", "dbrun@loc.gov"),
    "devnull@localhost": ("Risa Ohara", "rioh@loc.gov"),
    "ehs@pobox.com": ("Ed Summers", "edsu@loc.gov"),
    "jackiekazil@gmail.com": ("Jackie Kazil", "jkazil@loc.gov"),
    "rioh@loc.gov": ("Risa Ohara", "rioh@loc.gov")
}

print \
"""
git filter-branch --env-filter '
"""

for old_email, new_info in emails.items():
    print \
"""
    if [ $GIT_COMMITTER_EMAIL = "%(old_email)s" ]
    then
      GIT_COMMITTER_EMAIL="%(email)s"
      GIT_AUTHOR_EMAIL="%(email)s"
      GIT_AUTHOR_NAME="%(name)s"
      GIT_COMMITTER_NAME="%(name)s"
    fi
""" % {"old_email": old_email, "email": new_info[1], "name": new_info[0]}

print \
"""
' -- --all
"""