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@@ -1,204 +1,204 b'' | |||||
1 | # coding: utf-8 |
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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 __builtin__ |
|
3 | import __builtin__ | |
4 | import functools |
|
4 | import functools | |
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, basestring): |
|
38 | if isinstance(func_or_str, basestring): | |
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(e) |
|
58 | return unicode(e) | |
59 | except UnicodeError: |
|
59 | except UnicodeError: | |
60 | pass |
|
60 | pass | |
61 |
|
61 | |||
62 | try: |
|
62 | try: | |
63 |
return |
|
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 |
|
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 |
|
79 | |||
80 | str_to_unicode = no_code |
|
80 | str_to_unicode = no_code | |
81 | unicode_to_str = no_code |
|
81 | unicode_to_str = no_code | |
82 | str_to_bytes = encode |
|
82 | str_to_bytes = encode | |
83 | bytes_to_str = decode |
|
83 | bytes_to_str = decode | |
84 | cast_bytes_py2 = no_code |
|
84 | cast_bytes_py2 = no_code | |
85 |
|
85 | |||
86 | string_types = (str,) |
|
86 | string_types = (str,) | |
87 |
|
87 | |||
88 | def isidentifier(s, dotted=False): |
|
88 | def isidentifier(s, dotted=False): | |
89 | if dotted: |
|
89 | if dotted: | |
90 | return all(isidentifier(a) for a in s.split(".")) |
|
90 | return all(isidentifier(a) for a in s.split(".")) | |
91 | return s.isidentifier() |
|
91 | return s.isidentifier() | |
92 |
|
92 | |||
93 | open = orig_open |
|
93 | open = orig_open | |
94 |
|
94 | |||
95 | MethodType = types.MethodType |
|
95 | MethodType = types.MethodType | |
96 |
|
96 | |||
97 | def execfile(fname, glob, loc=None): |
|
97 | def execfile(fname, glob, loc=None): | |
98 | loc = loc if (loc is not None) else glob |
|
98 | loc = loc if (loc is not None) else glob | |
99 | with open(fname, 'rb') as f: |
|
99 | with open(fname, 'rb') as f: | |
100 | exec compile(f.read(), fname, 'exec') in glob, loc |
|
100 | exec compile(f.read(), fname, 'exec') in glob, loc | |
101 |
|
101 | |||
102 | # Refactor print statements in doctests. |
|
102 | # Refactor print statements in doctests. | |
103 | _print_statement_re = re.compile(r"\bprint (?P<expr>.*)$", re.MULTILINE) |
|
103 | _print_statement_re = re.compile(r"\bprint (?P<expr>.*)$", re.MULTILINE) | |
104 | def _print_statement_sub(match): |
|
104 | def _print_statement_sub(match): | |
105 | expr = match.groups('expr') |
|
105 | expr = match.groups('expr') | |
106 | return "print(%s)" % expr |
|
106 | return "print(%s)" % expr | |
107 |
|
107 | |||
108 | @_modify_str_or_docstring |
|
108 | @_modify_str_or_docstring | |
109 | def doctest_refactor_print(doc): |
|
109 | def doctest_refactor_print(doc): | |
110 | """Refactor 'print x' statements in a doctest to print(x) style. 2to3 |
|
110 | """Refactor 'print x' statements in a doctest to print(x) style. 2to3 | |
111 | unfortunately doesn't pick up on our doctests. |
|
111 | unfortunately doesn't pick up on our doctests. | |
112 |
|
112 | |||
113 | Can accept a string or a function, so it can be used as a decorator.""" |
|
113 | Can accept a string or a function, so it can be used as a decorator.""" | |
114 | return _print_statement_re.sub(_print_statement_sub, doc) |
|
114 | return _print_statement_re.sub(_print_statement_sub, doc) | |
115 |
|
115 | |||
116 | # Abstract u'abc' syntax: |
|
116 | # Abstract u'abc' syntax: | |
117 | @_modify_str_or_docstring |
|
117 | @_modify_str_or_docstring | |
118 | def u_format(s): |
|
118 | def u_format(s): | |
119 | """"{u}'abc'" --> "'abc'" (Python 3) |
|
119 | """"{u}'abc'" --> "'abc'" (Python 3) | |
120 |
|
120 | |||
121 | Accepts a string or a function, so it can be used as a decorator.""" |
|
121 | Accepts a string or a function, so it can be used as a decorator.""" | |
122 | return s.format(u='') |
|
122 | return s.format(u='') | |
123 |
|
123 | |||
124 | else: |
|
124 | else: | |
125 | PY3 = False |
|
125 | PY3 = False | |
126 |
|
126 | |||
127 | input = raw_input |
|
127 | input = raw_input | |
128 | builtin_mod_name = "__builtin__" |
|
128 | builtin_mod_name = "__builtin__" | |
129 |
|
129 | |||
130 | str_to_unicode = decode |
|
130 | str_to_unicode = decode | |
131 | unicode_to_str = encode |
|
131 | unicode_to_str = encode | |
132 | str_to_bytes = no_code |
|
132 | str_to_bytes = no_code | |
133 | bytes_to_str = no_code |
|
133 | bytes_to_str = no_code | |
134 | cast_bytes_py2 = cast_bytes |
|
134 | cast_bytes_py2 = cast_bytes | |
135 |
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135 | |||
136 | string_types = (str, unicode) |
|
136 | string_types = (str, unicode) | |
137 |
|
137 | |||
138 | import re |
|
138 | import re | |
139 | _name_re = re.compile(r"[a-zA-Z_][a-zA-Z0-9_]*$") |
|
139 | _name_re = re.compile(r"[a-zA-Z_][a-zA-Z0-9_]*$") | |
140 | def isidentifier(s, dotted=False): |
|
140 | def isidentifier(s, dotted=False): | |
141 | if dotted: |
|
141 | if dotted: | |
142 | return all(isidentifier(a) for a in s.split(".")) |
|
142 | return all(isidentifier(a) for a in s.split(".")) | |
143 | return bool(_name_re.match(s)) |
|
143 | return bool(_name_re.match(s)) | |
144 |
|
144 | |||
145 | class open(object): |
|
145 | class open(object): | |
146 | """Wrapper providing key part of Python 3 open() interface.""" |
|
146 | """Wrapper providing key part of Python 3 open() interface.""" | |
147 | def __init__(self, fname, mode="r", encoding="utf-8"): |
|
147 | def __init__(self, fname, mode="r", encoding="utf-8"): | |
148 | self.f = orig_open(fname, mode) |
|
148 | self.f = orig_open(fname, mode) | |
149 | self.enc = encoding |
|
149 | self.enc = encoding | |
150 |
|
150 | |||
151 | def write(self, s): |
|
151 | def write(self, s): | |
152 | return self.f.write(s.encode(self.enc)) |
|
152 | return self.f.write(s.encode(self.enc)) | |
153 |
|
153 | |||
154 | def read(self, size=-1): |
|
154 | def read(self, size=-1): | |
155 | return self.f.read(size).decode(self.enc) |
|
155 | return self.f.read(size).decode(self.enc) | |
156 |
|
156 | |||
157 | def close(self): |
|
157 | def close(self): | |
158 | return self.f.close() |
|
158 | return self.f.close() | |
159 |
|
159 | |||
160 | def __enter__(self): |
|
160 | def __enter__(self): | |
161 | return self |
|
161 | return self | |
162 |
|
162 | |||
163 | def __exit__(self, etype, value, traceback): |
|
163 | def __exit__(self, etype, value, traceback): | |
164 | self.f.close() |
|
164 | self.f.close() | |
165 |
|
165 | |||
166 | def MethodType(func, instance): |
|
166 | def MethodType(func, instance): | |
167 | return types.MethodType(func, instance, type(instance)) |
|
167 | return types.MethodType(func, instance, type(instance)) | |
168 |
|
168 | |||
169 | # don't override system execfile on 2.x: |
|
169 | # don't override system execfile on 2.x: | |
170 | execfile = execfile |
|
170 | execfile = execfile | |
171 |
|
171 | |||
172 | def doctest_refactor_print(func_or_str): |
|
172 | def doctest_refactor_print(func_or_str): | |
173 | return func_or_str |
|
173 | return func_or_str | |
174 |
|
174 | |||
175 |
|
175 | |||
176 | # Abstract u'abc' syntax: |
|
176 | # Abstract u'abc' syntax: | |
177 | @_modify_str_or_docstring |
|
177 | @_modify_str_or_docstring | |
178 | def u_format(s): |
|
178 | def u_format(s): | |
179 | """"{u}'abc'" --> "u'abc'" (Python 2) |
|
179 | """"{u}'abc'" --> "u'abc'" (Python 2) | |
180 |
|
180 | |||
181 | Accepts a string or a function, so it can be used as a decorator.""" |
|
181 | Accepts a string or a function, so it can be used as a decorator.""" | |
182 | return s.format(u='u') |
|
182 | return s.format(u='u') | |
183 |
|
183 | |||
184 | if sys.platform == 'win32': |
|
184 | if sys.platform == 'win32': | |
185 | def execfile(fname, glob=None, loc=None): |
|
185 | def execfile(fname, glob=None, loc=None): | |
186 | loc = loc if (loc is not None) else glob |
|
186 | loc = loc if (loc is not None) else glob | |
187 | # The rstrip() is necessary b/c trailing whitespace in files will |
|
187 | # The rstrip() is necessary b/c trailing whitespace in files will | |
188 | # cause an IndentationError in Python 2.6 (this was fixed in 2.7, |
|
188 | # cause an IndentationError in Python 2.6 (this was fixed in 2.7, | |
189 | # but we still support 2.6). See issue 1027. |
|
189 | # but we still support 2.6). See issue 1027. | |
190 | scripttext = __builtin__.open(fname).read().rstrip() + '\n' |
|
190 | scripttext = __builtin__.open(fname).read().rstrip() + '\n' | |
191 | # compile converts unicode filename to str assuming |
|
191 | # compile converts unicode filename to str assuming | |
192 | # ascii. Let's do the conversion before calling compile |
|
192 | # ascii. Let's do the conversion before calling compile | |
193 | if isinstance(fname, unicode): |
|
193 | if isinstance(fname, unicode): | |
194 | filename = unicode_to_str(fname) |
|
194 | filename = unicode_to_str(fname) | |
195 | else: |
|
195 | else: | |
196 | filename = fname |
|
196 | filename = fname | |
197 | exec compile(scripttext, filename, 'exec') in glob, loc |
|
197 | exec compile(scripttext, filename, 'exec') in glob, loc | |
198 | else: |
|
198 | else: | |
199 | def execfile(fname, *where): |
|
199 | def execfile(fname, *where): | |
200 | if isinstance(fname, unicode): |
|
200 | if isinstance(fname, unicode): | |
201 | filename = fname.encode(sys.getfilesystemencoding()) |
|
201 | filename = fname.encode(sys.getfilesystemencoding()) | |
202 | else: |
|
202 | else: | |
203 | filename = fname |
|
203 | filename = fname | |
204 | __builtin__.execfile(filename, *where) |
|
204 | __builtin__.execfile(filename, *where) |
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