a simple script for helping do cakephp releases

cakephp_version_bump.py

#! /usr/bin/env python

import os, re
from optparse import OptionParser

"""
Helper script for making releases

- Bumps version numbers
- Updates changelog urls

"""

def main():
    """
    Main dispatcher for other commands.
    """
    usage = 'usage %prog [options] <command> <version_number>'
    parser = OptionParser(usage)
    parser.add_option('-w', '--working-dir', dest="working_dir",
                      help="The working directory Cake is in, defaults to the CWD.", metavar="CWD",
                      default=os.getcwd())
    (options, args) = parser.parse_args()

    if len(args) == 0:
        parser.error('A command is required!')
    if len(args) == 1:
        parser.error('A version number is required!')

    functions = {
        'version': version,
        'changelog': changelog,
        'update': update
    }
    command = args[0].lower()
    try:
        functions[command](args, options)
    except KeyError:
        print 'Could not find that command'

def update(args, options):
    """
    Bump the version number in the version files
    and update the changelog link
    """
    version(args, options)
    changelog(args, options)


def version(args, options):
    """
    Update version numbers in the two files its in.
    """
    new_version = args[1]

    # Update VERSION.txt
    path = os.path.join(options.working_dir, 'cake/VERSION.txt');
    version_file = open(path, 'r')
    contents = version_file.read()
    contents = re.sub(r"""\n([0-9\.\-A-Z]+)""", "\n%s\n" % new_version, contents)

    version_file = open(path, 'w')
    version_file.write(contents)
    version_file.close()

    # Update cake/config/config.php
    path = os.path.join(options.working_dir, 'cake/config/config.php');

    version_conf = open(path, 'r')
    contents = version_conf.read()
    version_conf.close()

    contents = re.sub(r"""(')([^'"]+)(';\n)""", "'%s';\n" % new_version, contents)

    version_conf = open(path, 'w+')
    version_conf.write(contents)
    version_conf.close()


def changelog(args, options):
    """
    Find and fix the changelog files.
    """
    new_version = args[1]

    # Fix home.ctp in libs dir.
    path = os.path.join(options.working_dir, 'cake/libs/view/pages/home.ctp');
    home = open(path, 'r')
    contents = home.read()
    home.close()

    contents = re.sub(r"""changelogs/([^"']+)""", 'changelogs/%s' % new_version, contents)

    home = open(path, 'w+')
    home.write(contents)
    home.close()


if __name__ == '__main__':
    main()