Replicant

import sys

import re

import argparse

args = None

gitver = dict()

def warn(msg):

    sys.stderr.write('{0}: warning: {1}\n'.format(sys.argv[0], msg))

def load_gitver():

    with open(args.gitver, 'r') as f:

        for line in f:

            a = line.rstrip('\n').split(' ')

            if len(a) != 3 or a[1] != 'commit':

                sys.stderr.write('invalid git_versions.txt line: '+line)

            gitver[a[0]] = a[2]

def rewrite_manifest(out):

    projectexp = re.compile('\s*<project .*>\s*')

    pathexp = re.compile(' path="([^"]*)"')

    with open(args.manifest, 'r') as f:

        for line in f:

            if projectexp.match(line):

                pathm = pathexp.search(line)

                if pathm:

                    path = pathm.group(1)

                    if path in gitver:

                        line = re.sub(' revision="', ' upstream="', line)

                        line = re.sub('(\s*/?>\s*)$',

                                      ' revision="'+gitver[path]+'"\\1',

                                      line)

                        del gitver[path]

                    else:

                        warn('unknown project {0} in manifest'.format(

                                repr(path)))

            out.write(line)

    if len(gitver) > 0:

        warn('extra projects {0} in gitver'.format(

                repr(gitver.keys())))

def main():

    global args

    parser = argparse.ArgumentParser()

    parser.add_argument('manifest', type=str,

                        help='XML manifest file name')

    parser.add_argument('gitver', type=str,

                        help='Replicant git_versions.txt file name')

    args = parser.parse_args()

    load_gitver()

    rewrite_manifest(sys.stdout)

if __name__ == '__main__':

    main()