Mercurial > repos > bcclaywell > argo_navis

annotate venv/lib/python2.7/site-packages/jinja2/_compat.py @ 0:d67268158946 draft

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planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
author bcclaywell
date Mon, 12 Oct 2015 17:43:33 -0400
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1 # -*- coding: utf-8 -*-
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2 """
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3 jinja2._compat
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4 ~~~~~~~~~~~~~~
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5
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6 Some py2/py3 compatibility support based on a stripped down
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7 version of six so we don't have to depend on a specific version
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8 of it.
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9
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10 :copyright: Copyright 2013 by the Jinja team, see AUTHORS.
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11 :license: BSD, see LICENSE for details.
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12 """
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13 import sys
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14
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15 PY2 = sys.version_info[0] == 2
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16 PYPY = hasattr(sys, 'pypy_translation_info')
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17 _identity = lambda x: x
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18
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19
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20 if not PY2:
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21 unichr = chr
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22 range_type = range
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23 text_type = str
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24 string_types = (str,)
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25 integer_types = (int,)
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26
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27 iterkeys = lambda d: iter(d.keys())
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28 itervalues = lambda d: iter(d.values())
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29 iteritems = lambda d: iter(d.items())
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30
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31 import pickle
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32 from io import BytesIO, StringIO
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33 NativeStringIO = StringIO
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34
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35 def reraise(tp, value, tb=None):
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36 if value.__traceback__ is not tb:
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37 raise value.with_traceback(tb)
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38 raise value
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39
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40 ifilter = filter
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41 imap = map
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42 izip = zip
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43 intern = sys.intern
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44
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45 implements_iterator = _identity
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46 implements_to_string = _identity
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47 encode_filename = _identity
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48 get_next = lambda x: x.__next__
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49
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50 else:
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51 unichr = unichr
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52 text_type = unicode
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53 range_type = xrange
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54 string_types = (str, unicode)
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55 integer_types = (int, long)
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56
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57 iterkeys = lambda d: d.iterkeys()
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58 itervalues = lambda d: d.itervalues()
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59 iteritems = lambda d: d.iteritems()
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60
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61 import cPickle as pickle
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62 from cStringIO import StringIO as BytesIO, StringIO
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63 NativeStringIO = BytesIO
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64
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65 exec('def reraise(tp, value, tb=None):\n raise tp, value, tb')
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66
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67 from itertools import imap, izip, ifilter
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68 intern = intern
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69
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70 def implements_iterator(cls):
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71 cls.next = cls.__next__
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72 del cls.__next__
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73 return cls
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74
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75 def implements_to_string(cls):
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76 cls.__unicode__ = cls.__str__
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77 cls.__str__ = lambda x: x.__unicode__().encode('utf-8')
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78 return cls
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79
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80 get_next = lambda x: x.next
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81
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82 def encode_filename(filename):
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83 if isinstance(filename, unicode):
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84 return filename.encode('utf-8')
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85 return filename
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86
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87
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88 def with_metaclass(meta, *bases):
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89 # This requires a bit of explanation: the basic idea is to make a
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90 # dummy metaclass for one level of class instanciation that replaces
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91 # itself with the actual metaclass. Because of internal type checks
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92 # we also need to make sure that we downgrade the custom metaclass
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93 # for one level to something closer to type (that's why __call__ and
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94 # __init__ comes back from type etc.).
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95 #
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96 # This has the advantage over six.with_metaclass in that it does not
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97 # introduce dummy classes into the final MRO.
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98 class metaclass(meta):
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99 __call__ = type.__call__
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100 __init__ = type.__init__
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101 def __new__(cls, name, this_bases, d):
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102 if this_bases is None:
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103 return type.__new__(cls, name, (), d)
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104 return meta(name, bases, d)
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105 return metaclass('temporary_class', None, {})
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106
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107
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108 try:
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109 from urllib.parse import quote_from_bytes as url_quote
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110 except ImportError:
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111 from urllib import quote as url_quote