Mercurial > hgrepos > Python > libs > ConfigMix

annotate configmix/__init__.py @ 8:7090c295c940

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Two differend tree merge function implementations: not yet finished
author Franz Glasner <hg@dom66.de>
date Wed, 09 Mar 2016 09:05:41 +0100
parents dc058099a4cb
children 6835a5663008
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1 # -*- coding: utf-8 -*-
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2 r"""
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3
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4 :Author: Franz Glasner
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5 :License: BSD License.
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6 See LICENSE for details.
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7
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8 """
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9 #
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10 # NOTE: ONLY STANDARDLIB-IMPORTS IN THIS MODULE.
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11 # ITS JUST FOR BOOTSTRAPPING WITH PYTHON2 and PYTHON3.
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12 # NO `future`, `six`, ...
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13 #
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14
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15 from __future__ import division, print_function, absolute_import
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16
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17
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18 __version__ = "0.0.dev0"
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19
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20
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21 __all__ = []
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22
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23
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24 #
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25 # From: https://github.com/jet9/python-yconfig/blob/master/yconfig.py
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26 # License: BSD License
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27 #
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28 def dict_merge(a, b):
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29 """Recursively merges dict's. not just simple a['key'] = b['key'], if
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30 both a and bhave a key who's value is a dict then dict_merge is called
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31 on both values and the result stored in the returned dictionary."""
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32
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33 if not isinstance(b, dict):
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34 return b
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35 result = deepcopy(a)
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36 for k, v in b.iteritems():
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37 if k in result and isinstance(result[k], dict):
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38 result[k] = dict_merge(result[k], v)
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39 else:
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40 result[k] = deepcopy(v)
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41 return result
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42
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43
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44 def merge(user, default):
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45 """A simple (YAML-)tree merge.
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46
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47 From http://stackoverflow.com/questions/823196/yaml-merge-in-python
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48
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49 """
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50 if isinstance(user, dict) and isinstance(default, dict):
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51 for k,v in default.items():
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52 if k not in user:
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53 user[k] = v
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54 else:
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55 user[k] = merge(user[k], v)
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56 return user