Git pre-receive hook

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Oddly, I had some code laying around from a git -> WordPress utility that might help. The following will give you a list of all files changed in the receive, as well as their contents. No guarantees, may have bugs, may not be the most efficient way to do it, blah blah blah. Some of this code is based off stuff in gitshelve, which is a really great thing to look at for generic git manipulation.

import sys
import os
import subprocess

def git(args, **kwargs):
    environ = os.environ.copy()
    if 'repo' in kwargs:
        environ['GIT_DIR'] = kwargs['repo']
    if 'work' in kwargs:
        environ['GIT_WORK_TREE'] = kwargs['work']
    proc = subprocess.Popen(args, stdout=subprocess.PIPE, env=environ)
    return proc.communicate()

def get_changed_files(base, commit, **kw):
    (results, code) = git(('git', 'diff', '--numstat', "%s..%s" % (base, commit)), **kw)
    lines = results.split('\n')[:-1]
    return map(lambda x: x.split('\t')[2], lines)

def get_new_file(filename, commit):
    (results, code) = git(('git', 'show', '%s:%s' % (commit, filename)))
    return results

repo = os.getcwd()
basedir = os.path.join(repo, "..")

line = sys.stdin.read()
(base, commit, ref) = line.strip().split()
modified = get_changed_files(base, commit)

for fname in modified:
    print "=====", fname
    print get_new_file(fname, commit)

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