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annotate mixconfig/yaml.py @ 1:e4c63b4f1568

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Provide a yaml wrapper that import with all-unicode strings on Python2 but does not path the Loader globally
author Franz Glasner <f.glasner@feldmann-mg.com>
date Tue, 08 Mar 2016 13:11:58 +0100
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children bedc4f95b9e9
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e4c63b4f1568 Provide a yaml wrapper that import with all-unicode strings on Python2 but does not path the Loader globally
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1 # -*- coding: utf-8 -*-
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2 r"""Simple wrapper for yaml to support all-unicode strings when loading
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3 configuration files.
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5 """
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7 from __future__ import division, print_function, absolute_import
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9 import yaml
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12 __all__ = ["safe_load", "safe_load_all", "load", "load_all"]
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15 class ConfigLoader(yaml.Loader):
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17 """A YAML loader, which makes all !!str strings to Unicode. Standard
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18 PyYAML does this only in the non-ASCII case.
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20 """
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22 def construct_yaml_str(self, node):
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23 return self.construct_scalar(node)
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26 ConfigLoader.add_constructor(
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27 "tag:yaml.org,2002:str",
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28 ConfigLoader.construct_yaml_str)
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31 class ConfigSafeLoader(yaml.SafeLoader):
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33 """A safe YAML loader, which makes all !!str strings to Unicode.
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34 Standard PyYAML does this only in the non-ASCII case.
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36 """
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38 def construct_yaml_str(self, node):
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39 return self.construct_scalar(node)
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42 ConfigSafeLoader.add_constructor(
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43 "tag:yaml.org,2002:str",
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44 ConfigSafeLoader.construct_yaml_str)
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47 def load(stream, Loader=ConfigLoader):
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48 return yaml.load(stream, Loader)
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51 def load_all(stream, Loader=ConfigLoader):
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52 return yaml.load_all(stream, Loader)
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55 def safe_load(stream):
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56 return yaml.load(stream, Loader=ConfigSafeLoader)
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59 def safe_load_all(stream):
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60 return yaml.load_all(stream, Loader=ConfigSafeLoader)