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@@ -1,242 +1,242 b'' | |||||
1 | # coding: utf-8 |
|
1 | # coding: utf-8 | |
2 | """Compatibility tricks for Python 3. Mainly to do with unicode.""" |
|
2 | """Compatibility tricks for Python 3. Mainly to do with unicode.""" | |
3 | import functools |
|
3 | import functools | |
4 | import os |
|
4 | import os | |
5 | import sys |
|
5 | import sys | |
6 | import re |
|
6 | import re | |
7 | import types |
|
7 | import types | |
8 |
|
8 | |||
9 | from .encoding import DEFAULT_ENCODING |
|
9 | from .encoding import DEFAULT_ENCODING | |
10 |
|
10 | |||
11 | orig_open = open |
|
11 | orig_open = open | |
12 |
|
12 | |||
13 | def no_code(x, encoding=None): |
|
13 | def no_code(x, encoding=None): | |
14 | return x |
|
14 | return x | |
15 |
|
15 | |||
16 | def decode(s, encoding=None): |
|
16 | def decode(s, encoding=None): | |
17 | encoding = encoding or DEFAULT_ENCODING |
|
17 | encoding = encoding or DEFAULT_ENCODING | |
18 | return s.decode(encoding, "replace") |
|
18 | return s.decode(encoding, "replace") | |
19 |
|
19 | |||
20 | def encode(u, encoding=None): |
|
20 | def encode(u, encoding=None): | |
21 | encoding = encoding or DEFAULT_ENCODING |
|
21 | encoding = encoding or DEFAULT_ENCODING | |
22 | return u.encode(encoding, "replace") |
|
22 | return u.encode(encoding, "replace") | |
23 |
|
23 | |||
24 |
|
24 | |||
25 | def cast_unicode(s, encoding=None): |
|
25 | def cast_unicode(s, encoding=None): | |
26 | if isinstance(s, bytes): |
|
26 | if isinstance(s, bytes): | |
27 | return decode(s, encoding) |
|
27 | return decode(s, encoding) | |
28 | return s |
|
28 | return s | |
29 |
|
29 | |||
30 | def cast_bytes(s, encoding=None): |
|
30 | def cast_bytes(s, encoding=None): | |
31 | if not isinstance(s, bytes): |
|
31 | if not isinstance(s, bytes): | |
32 | return encode(s, encoding) |
|
32 | return encode(s, encoding) | |
33 | return s |
|
33 | return s | |
34 |
|
34 | |||
35 | def _modify_str_or_docstring(str_change_func): |
|
35 | def _modify_str_or_docstring(str_change_func): | |
36 | @functools.wraps(str_change_func) |
|
36 | @functools.wraps(str_change_func) | |
37 | def wrapper(func_or_str): |
|
37 | def wrapper(func_or_str): | |
38 | if isinstance(func_or_str, string_types): |
|
38 | if isinstance(func_or_str, string_types): | |
39 | func = None |
|
39 | func = None | |
40 | doc = func_or_str |
|
40 | doc = func_or_str | |
41 | else: |
|
41 | else: | |
42 | func = func_or_str |
|
42 | func = func_or_str | |
43 | doc = func.__doc__ |
|
43 | doc = func.__doc__ | |
44 |
|
44 | |||
45 | doc = str_change_func(doc) |
|
45 | doc = str_change_func(doc) | |
46 |
|
46 | |||
47 | if func: |
|
47 | if func: | |
48 | func.__doc__ = doc |
|
48 | func.__doc__ = doc | |
49 | return func |
|
49 | return func | |
50 | return doc |
|
50 | return doc | |
51 | return wrapper |
|
51 | return wrapper | |
52 |
|
52 | |||
53 | def safe_unicode(e): |
|
53 | def safe_unicode(e): | |
54 | """unicode(e) with various fallbacks. Used for exceptions, which may not be |
|
54 | """unicode(e) with various fallbacks. Used for exceptions, which may not be | |
55 | safe to call unicode() on. |
|
55 | safe to call unicode() on. | |
56 | """ |
|
56 | """ | |
57 | try: |
|
57 | try: | |
58 | return unicode_type(e) |
|
58 | return unicode_type(e) | |
59 | except UnicodeError: |
|
59 | except UnicodeError: | |
60 | pass |
|
60 | pass | |
61 |
|
61 | |||
62 | try: |
|
62 | try: | |
63 | return str_to_unicode(str(e)) |
|
63 | return str_to_unicode(str(e)) | |
64 | except UnicodeError: |
|
64 | except UnicodeError: | |
65 | pass |
|
65 | pass | |
66 |
|
66 | |||
67 | try: |
|
67 | try: | |
68 | return str_to_unicode(repr(e)) |
|
68 | return str_to_unicode(repr(e)) | |
69 | except UnicodeError: |
|
69 | except UnicodeError: | |
70 | pass |
|
70 | pass | |
71 |
|
71 | |||
72 | return u'Unrecoverably corrupt evalue' |
|
72 | return u'Unrecoverably corrupt evalue' | |
73 |
|
73 | |||
74 | if sys.version_info[0] >= 3: |
|
74 | if sys.version_info[0] >= 3: | |
75 | PY3 = True |
|
75 | PY3 = True | |
76 |
|
76 | |||
77 | input = input |
|
77 | input = input | |
78 | builtin_mod_name = "builtins" |
|
78 | builtin_mod_name = "builtins" | |
79 | import builtins as builtin_mod |
|
79 | import builtins as builtin_mod | |
80 |
|
80 | |||
81 | str_to_unicode = no_code |
|
81 | str_to_unicode = no_code | |
82 | unicode_to_str = no_code |
|
82 | unicode_to_str = no_code | |
83 | str_to_bytes = encode |
|
83 | str_to_bytes = encode | |
84 | bytes_to_str = decode |
|
84 | bytes_to_str = decode | |
85 | cast_bytes_py2 = no_code |
|
85 | cast_bytes_py2 = no_code | |
86 |
|
86 | |||
87 | string_types = (str,) |
|
87 | string_types = (str,) | |
88 | unicode_type = str |
|
88 | unicode_type = str | |
89 |
|
89 | |||
90 | def isidentifier(s, dotted=False): |
|
90 | def isidentifier(s, dotted=False): | |
91 | if dotted: |
|
91 | if dotted: | |
92 | return all(isidentifier(a) for a in s.split(".")) |
|
92 | return all(isidentifier(a) for a in s.split(".")) | |
93 | return s.isidentifier() |
|
93 | return s.isidentifier() | |
94 |
|
94 | |||
95 | open = orig_open |
|
95 | open = orig_open | |
96 | xrange = range |
|
96 | xrange = range | |
97 | def iteritems(d): return iter(d.items()) |
|
97 | def iteritems(d): return iter(d.items()) | |
98 | def itervalues(d): return iter(d.values()) |
|
98 | def itervalues(d): return iter(d.values()) | |
99 | getcwd = os.getcwd |
|
99 | getcwd = os.getcwd | |
100 |
|
100 | |||
101 | MethodType = types.MethodType |
|
101 | MethodType = types.MethodType | |
102 |
|
102 | |||
103 | def execfile(fname, glob, loc=None): |
|
103 | def execfile(fname, glob, loc=None): | |
104 | loc = loc if (loc is not None) else glob |
|
104 | loc = loc if (loc is not None) else glob | |
105 | with open(fname, 'rb') as f: |
|
105 | with open(fname, 'rb') as f: | |
106 | exec(compile(f.read(), fname, 'exec'), glob, loc) |
|
106 | exec(compile(f.read(), fname, 'exec'), glob, loc) | |
107 |
|
107 | |||
108 | # Refactor print statements in doctests. |
|
108 | # Refactor print statements in doctests. | |
109 | _print_statement_re = re.compile(r"\bprint (?P<expr>.*)$", re.MULTILINE) |
|
109 | _print_statement_re = re.compile(r"\bprint (?P<expr>.*)$", re.MULTILINE) | |
110 | def _print_statement_sub(match): |
|
110 | def _print_statement_sub(match): | |
111 | expr = match.groups('expr') |
|
111 | expr = match.groups('expr') | |
112 | return "print(%s)" % expr |
|
112 | return "print(%s)" % expr | |
113 |
|
113 | |||
114 | @_modify_str_or_docstring |
|
114 | @_modify_str_or_docstring | |
115 | def doctest_refactor_print(doc): |
|
115 | def doctest_refactor_print(doc): | |
116 | """Refactor 'print x' statements in a doctest to print(x) style. 2to3 |
|
116 | """Refactor 'print x' statements in a doctest to print(x) style. 2to3 | |
117 | unfortunately doesn't pick up on our doctests. |
|
117 | unfortunately doesn't pick up on our doctests. | |
118 |
|
118 | |||
119 | Can accept a string or a function, so it can be used as a decorator.""" |
|
119 | Can accept a string or a function, so it can be used as a decorator.""" | |
120 | return _print_statement_re.sub(_print_statement_sub, doc) |
|
120 | return _print_statement_re.sub(_print_statement_sub, doc) | |
121 |
|
121 | |||
122 | # Abstract u'abc' syntax: |
|
122 | # Abstract u'abc' syntax: | |
123 | @_modify_str_or_docstring |
|
123 | @_modify_str_or_docstring | |
124 | def u_format(s): |
|
124 | def u_format(s): | |
125 | """"{u}'abc'" --> "'abc'" (Python 3) |
|
125 | """"{u}'abc'" --> "'abc'" (Python 3) | |
126 |
|
126 | |||
127 | Accepts a string or a function, so it can be used as a decorator.""" |
|
127 | Accepts a string or a function, so it can be used as a decorator.""" | |
128 | return s.format(u='') |
|
128 | return s.format(u='') | |
129 |
|
129 | |||
130 | else: |
|
130 | else: | |
131 | PY3 = False |
|
131 | PY3 = False | |
132 |
|
132 | |||
133 | input = raw_input |
|
133 | input = raw_input | |
134 | builtin_mod_name = "__builtin__" |
|
134 | builtin_mod_name = "__builtin__" | |
135 | import __builtin__ as builtin_mod |
|
135 | import __builtin__ as builtin_mod | |
136 |
|
136 | |||
137 | str_to_unicode = decode |
|
137 | str_to_unicode = decode | |
138 | unicode_to_str = encode |
|
138 | unicode_to_str = encode | |
139 | str_to_bytes = no_code |
|
139 | str_to_bytes = no_code | |
140 | bytes_to_str = no_code |
|
140 | bytes_to_str = no_code | |
141 | cast_bytes_py2 = cast_bytes |
|
141 | cast_bytes_py2 = cast_bytes | |
142 |
|
142 | |||
143 | string_types = (str, unicode) |
|
143 | string_types = (str, unicode) | |
144 | unicode_type = unicode |
|
144 | unicode_type = unicode | |
145 |
|
145 | |||
146 | import re |
|
146 | import re | |
147 | _name_re = re.compile(r"[a-zA-Z_][a-zA-Z0-9_]*$") |
|
147 | _name_re = re.compile(r"[a-zA-Z_][a-zA-Z0-9_]*$") | |
148 | def isidentifier(s, dotted=False): |
|
148 | def isidentifier(s, dotted=False): | |
149 | if dotted: |
|
149 | if dotted: | |
150 | return all(isidentifier(a) for a in s.split(".")) |
|
150 | return all(isidentifier(a) for a in s.split(".")) | |
151 | return bool(_name_re.match(s)) |
|
151 | return bool(_name_re.match(s)) | |
152 |
|
152 | |||
153 | class open(object): |
|
153 | class open(object): | |
154 | """Wrapper providing key part of Python 3 open() interface.""" |
|
154 | """Wrapper providing key part of Python 3 open() interface.""" | |
155 | def __init__(self, fname, mode="r", encoding="utf-8"): |
|
155 | def __init__(self, fname, mode="r", encoding="utf-8"): | |
156 | self.f = orig_open(fname, mode) |
|
156 | self.f = orig_open(fname, mode) | |
157 | self.enc = encoding |
|
157 | self.enc = encoding | |
158 |
|
158 | |||
159 | def write(self, s): |
|
159 | def write(self, s): | |
160 | return self.f.write(s.encode(self.enc)) |
|
160 | return self.f.write(s.encode(self.enc)) | |
161 |
|
161 | |||
162 | def read(self, size=-1): |
|
162 | def read(self, size=-1): | |
163 | return self.f.read(size).decode(self.enc) |
|
163 | return self.f.read(size).decode(self.enc) | |
164 |
|
164 | |||
165 | def close(self): |
|
165 | def close(self): | |
166 | return self.f.close() |
|
166 | return self.f.close() | |
167 |
|
167 | |||
168 | def __enter__(self): |
|
168 | def __enter__(self): | |
169 | return self |
|
169 | return self | |
170 |
|
170 | |||
171 | def __exit__(self, etype, value, traceback): |
|
171 | def __exit__(self, etype, value, traceback): | |
172 | self.f.close() |
|
172 | self.f.close() | |
173 |
|
173 | |||
174 | xrange = xrange |
|
174 | xrange = xrange | |
175 | def iteritems(d): return d.iteritems() |
|
175 | def iteritems(d): return d.iteritems() | |
176 | def itervalues(d): return d.itervalues() |
|
176 | def itervalues(d): return d.itervalues() | |
177 | getcwd = os.getcwdu |
|
177 | getcwd = os.getcwdu | |
178 |
|
178 | |||
179 | def MethodType(func, instance): |
|
179 | def MethodType(func, instance): | |
180 | return types.MethodType(func, instance, type(instance)) |
|
180 | return types.MethodType(func, instance, type(instance)) | |
181 |
|
181 | |||
182 | # don't override system execfile on 2.x: |
|
182 | # don't override system execfile on 2.x: | |
183 | execfile = execfile |
|
183 | execfile = execfile | |
184 |
|
184 | |||
185 | def doctest_refactor_print(func_or_str): |
|
185 | def doctest_refactor_print(func_or_str): | |
186 | return func_or_str |
|
186 | return func_or_str | |
187 |
|
187 | |||
188 |
|
188 | |||
189 | # Abstract u'abc' syntax: |
|
189 | # Abstract u'abc' syntax: | |
190 | @_modify_str_or_docstring |
|
190 | @_modify_str_or_docstring | |
191 | def u_format(s): |
|
191 | def u_format(s): | |
192 | """"{u}'abc'" --> "u'abc'" (Python 2) |
|
192 | """"{u}'abc'" --> "u'abc'" (Python 2) | |
193 |
|
193 | |||
194 | Accepts a string or a function, so it can be used as a decorator.""" |
|
194 | Accepts a string or a function, so it can be used as a decorator.""" | |
195 | return s.format(u='u') |
|
195 | return s.format(u='u') | |
196 |
|
196 | |||
197 | if sys.platform == 'win32': |
|
197 | if sys.platform == 'win32': | |
198 | def execfile(fname, glob=None, loc=None): |
|
198 | def execfile(fname, glob=None, loc=None): | |
199 | loc = loc if (loc is not None) else glob |
|
199 | loc = loc if (loc is not None) else glob | |
200 | # The rstrip() is necessary b/c trailing whitespace in files will |
|
200 | # The rstrip() is necessary b/c trailing whitespace in files will | |
201 | # cause an IndentationError in Python 2.6 (this was fixed in 2.7, |
|
201 | # cause an IndentationError in Python 2.6 (this was fixed in 2.7, | |
202 | # but we still support 2.6). See issue 1027. |
|
202 | # but we still support 2.6). See issue 1027. | |
203 | scripttext = builtin_mod.open(fname).read().rstrip() + '\n' |
|
203 | scripttext = builtin_mod.open(fname).read().rstrip() + '\n' | |
204 | # compile converts unicode filename to str assuming |
|
204 | # compile converts unicode filename to str assuming | |
205 | # ascii. Let's do the conversion before calling compile |
|
205 | # ascii. Let's do the conversion before calling compile | |
206 | if isinstance(fname, unicode): |
|
206 | if isinstance(fname, unicode): | |
207 | filename = unicode_to_str(fname) |
|
207 | filename = unicode_to_str(fname) | |
208 | else: |
|
208 | else: | |
209 | filename = fname |
|
209 | filename = fname | |
210 | exec(compile(scripttext, filename, 'exec'), glob, loc) |
|
210 | exec(compile(scripttext, filename, 'exec'), glob, loc) | |
211 | else: |
|
211 | else: | |
212 | def execfile(fname, *where): |
|
212 | def execfile(fname, *where): | |
213 | if isinstance(fname, unicode): |
|
213 | if isinstance(fname, unicode): | |
214 | filename = fname.encode(sys.getfilesystemencoding()) |
|
214 | filename = fname.encode(sys.getfilesystemencoding()) | |
215 | else: |
|
215 | else: | |
216 | filename = fname |
|
216 | filename = fname | |
217 | builtin_mod.execfile(filename, *where) |
|
217 | builtin_mod.execfile(filename, *where) | |
218 |
|
218 | |||
219 | # Parts below taken from six: |
|
219 | # Parts below taken from six: | |
220 | # Copyright (c) 2010-2013 Benjamin Peterson |
|
220 | # Copyright (c) 2010-2013 Benjamin Peterson | |
221 | # |
|
221 | # | |
222 | # Permission is hereby granted, free of charge, to any person obtaining a copy |
|
222 | # Permission is hereby granted, free of charge, to any person obtaining a copy | |
223 | # of this software and associated documentation files (the "Software"), to deal |
|
223 | # of this software and associated documentation files (the "Software"), to deal | |
224 | # in the Software without restriction, including without limitation the rights |
|
224 | # in the Software without restriction, including without limitation the rights | |
225 | # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
|
225 | # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
226 | # copies of the Software, and to permit persons to whom the Software is |
|
226 | # copies of the Software, and to permit persons to whom the Software is | |
227 | # furnished to do so, subject to the following conditions: |
|
227 | # furnished to do so, subject to the following conditions: | |
228 | # |
|
228 | # | |
229 | # The above copyright notice and this permission notice shall be included in all |
|
229 | # The above copyright notice and this permission notice shall be included in all | |
230 | # copies or substantial portions of the Software. |
|
230 | # copies or substantial portions of the Software. | |
231 | # |
|
231 | # | |
232 | # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
|
232 | # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
233 | # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
|
233 | # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
234 | # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
|
234 | # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
235 | # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
|
235 | # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
236 | # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
|
236 | # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
237 | # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
|
237 | # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
238 | # SOFTWARE. |
|
238 | # SOFTWARE. | |
239 |
|
239 | |||
240 | def with_metaclass(meta, *bases): |
|
240 | def with_metaclass(meta, *bases): | |
241 | """Create a base class with a metaclass.""" |
|
241 | """Create a base class with a metaclass.""" | |
242 | return meta("NewBase", bases, {}) |
|
242 | return meta("_NewBase", bases, {}) |
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