29 lines
958 B
Python
29 lines
958 B
Python
# Copyright (C) 2012 Yahoo! Inc.
|
|
#
|
|
# Author: Joshua Harlow <harlowja@yahoo-inc.com>
|
|
#
|
|
# This file is part of cloud-init. See LICENSE file for license information.
|
|
|
|
|
|
class Merger:
|
|
def __init__(self, _merger, opts):
|
|
self._append = "append" in opts
|
|
|
|
def __str__(self):
|
|
return "StringMerger: (append=%s)" % (self._append)
|
|
|
|
# On encountering a unicode object to merge value with
|
|
# we will for now just proxy into the string method to let it handle it.
|
|
def _on_unicode(self, value, merge_with):
|
|
return self._on_str(value, merge_with)
|
|
|
|
# On encountering a string object to merge with we will
|
|
# perform the following action, if appending we will
|
|
# merge them together, otherwise we will just return value.
|
|
def _on_str(self, value, merge_with):
|
|
if not isinstance(value, str):
|
|
return merge_with
|
|
if not self._append:
|
|
return merge_with
|
|
return value + merge_with
|