Rename authors in svn using svn dump file

rename_authors_in_svn.py

#!/usr/bin/python
# -*- coding:utf8 -*-

import sys

authors = {
        "author1_old_name\n":"author1_new_name",
        "author2_old_name\n":"author2_new_name",
}

svn_dump = open(sys.argv[1], 'r')

while True:
    line = svn_dump.readline()

    if len(line) == 0:
        break

    if line == "svn:author\n":
        sys.stderr.write("Found svn:author\n")
        value_line = svn_dump.readline()
        author_line = svn_dump.readline()

        if author_line in authors:
            sys.stderr.write("Found author %s in dictionary\n" % author_line.rstrip("\n"))
            value_line = "V " + str(len(authors[author_line])) + "\n"
            author_line = authors[author_line] + "\n"

        sys.stdout.write(line)
        sys.stdout.write(value_line)
        sys.stdout.write(author_line)
    else:
        sys.stdout.write(line)