from subprocess import call

SVN_CONF = '''[general]
anon-access = none
auth-access = write
password-db = passwd
authz-db = authz
'''

SVN_PASSWD = '''[users]
{user} = {password}
'''

SVN_AUTHZ = '''[groups]
admin = {user}

[/]
* = r
@admin = rw
'''

class SVNServer(object):
    def __init__(self, root, name, user, password):
        self.root = '{0}{1}'.format(root, name)
        self.passwd = SVN_PASSWD.format(user = user, password = password)
        self.passwd_path = '{0}/conf/passwd'.format(self.root)
        self.authz = SVN_AUTHZ.format(user = user)
        self.authz_path = '{0}/conf/authz'.format(self.root)
        self.conf_path = '{0}/conf/svnserve.conf'.format(self.root)

        self.log_file = '{0}.log'.format(self.root)
        self.pid_file = '{0}.pid'.format(self.root)

    def __enter__(self):
        call(["svnadmin", "create", self.root])
        with open(self.passwd_path, 'w') as f:
            f.write(self.passwd)
        with open(self.authz_path, 'w') as f:
            f.write(self.authz)
        with open(self.conf_path, 'w') as f:
            f.write(SVN_CONF)
        call([
            "svnserve", "--daemon",
            "--root", self.root,
            "--log-file", self.log_file,
            "--pid-file", self.pid_file
        ])
        return self

    def __exit__(self, *args):
        try:
            with open(self.pid_file, 'r') as f:
                call(["kill", "-9", f.read().strip()])
        finally:
            call(["rm", self.pid_file])
            call(["rm", self.log_file])
            call(["rm", "-rf", self.root])


if __name__ == '__main__':
    from time import sleep
    def keyboard_loop():
        while True:
            try:
                sleep(1)
            except KeyboardInterrupt:
                break

    with SVNServer('./', 'myRepos', 'guest', 'guest') as server:
        try:
             # DO SOMETHING
             keyboard_loop()
        finally:
             # CLEAN