bob's install-name-tool.py

gistfile1.py

import macholib
def install_name_tool(fn, new_id=None, changedict=None):
    m = macholib.MachO(fn)
    if new_id:
        m.rewriteInstallNameCommand(new_id)
    if changedict:
        m.rewriteLoadCommands(changedict)
    m.save()

if __name__ == '__main__':
    import sys
    args = sys.argv[1:]
    def err():
        print >>sys.stderr, 'Usage: %s [-change old new] ... [-id name] input' % (sys.argv[0],)
        raise SystemExit
    if not args:
        err()
    new_id = None
    fn = None
    changedict = {}
    args = iter(args)
    try:
        for arg in args:
            if arg == '-change':
                changedict[args.next()] = args.next()
            elif arg == '-id':
                new_id = args.next()
            else:
                fn = arg
                if list(args):
                    raise StopIteration
                break
        else:
            raise StopIteration
    except StopIteration:
        err()
    install_name_tool(fn, new_id, changedict)