forked from bpython/bpython
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathimportcompletion.py
More file actions
208 lines (182 loc) · 7.18 KB
/
importcompletion.py
File metadata and controls
208 lines (182 loc) · 7.18 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
# The MIT License
#
# Copyright (c) 2009-2011 Andreas Stuehrk
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
from __future__ import with_statement
from bpython import line as lineparts
import imp
import os
import sys
import warnings
if sys.version_info[0] == 3 and sys.version_info[1] >= 3:
import importlib.machinery
SUFFIXES = importlib.machinery.all_suffixes()
else:
SUFFIXES = [suffix for suffix, mode, type in imp.get_suffixes()]
try:
from warnings import catch_warnings
except ImportError:
import contextlib
@contextlib.contextmanager
def catch_warnings():
"""Stripped-down version of `warnings.catch_warnings()`
(available in Py >= 2.6)."""
filters = warnings.filters
warnings.filters = list(filters)
try:
yield
finally:
warnings.filters = filters
from bpython._py3compat import py3
# The cached list of all known modules
modules = set()
fully_loaded = False
def module_matches(cw, prefix=''):
"""Modules names to replace cw with"""
full = '%s.%s' % (prefix, cw) if prefix else cw
matches = [name for name in modules
if (name.startswith(full) and
name.find('.', len(full)) == -1)]
if prefix:
return [match[len(prefix)+1:] for match in matches]
else:
return matches
def attr_matches(cw, prefix='', only_modules=False):
"""Attributes to replace name with"""
full = '%s.%s' % (prefix, cw) if prefix else cw
module_name, _, name_after_dot = full.rpartition('.')
if module_name not in sys.modules:
return []
module = sys.modules[module_name]
if only_modules:
matches = [name for name in dir(module)
if name.startswith(name_after_dot) and
'%s.%s' % (module_name, name) in sys.modules]
else:
matches = [name for name in dir(module) if name.startswith(name_after_dot)]
module_part, _, _ = cw.rpartition('.')
if module_part:
return ['%s.%s' % (module_part, m) for m in matches]
return matches
def module_attr_matches(name):
"""Only attributes which are modules to replace name with"""
return attr_matches(name, prefix='', only_modules=True)
def complete(cursor_offset, line):
"""Construct a full list of possibly completions for imports."""
tokens = line.split()
if 'from' not in tokens and 'import' not in tokens:
return None
result = lineparts.current_word(cursor_offset, line)
if result is None:
return None
if lineparts.current_from_import_from(cursor_offset, line) is not None:
if lineparts.current_from_import_import(cursor_offset, line) is not None:
# `from a import <b|>` completion
return (module_matches(lineparts.current_from_import_import(cursor_offset, line)[2],
lineparts.current_from_import_from(cursor_offset, line)[2]) +
attr_matches(lineparts.current_from_import_import(cursor_offset, line)[2],
lineparts.current_from_import_from(cursor_offset, line)[2]))
else:
# `from <a|>` completion
return (module_attr_matches(lineparts.current_from_import_from(cursor_offset, line)[2]) +
module_matches(lineparts.current_from_import_from(cursor_offset, line)[2]))
elif lineparts.current_import(cursor_offset, line):
# `import <a|>` completion
return (module_matches(lineparts.current_import(cursor_offset, line)[2]) +
module_attr_matches(lineparts.current_import(cursor_offset, line)[2]))
else:
return None
def find_modules(path):
"""Find all modules (and packages) for a given directory."""
if not os.path.isdir(path):
# Perhaps a zip file
return
try:
filenames = os.listdir(path)
except EnvironmentError:
filenames = []
for name in filenames:
if not any(name.endswith(suffix) for suffix in SUFFIXES):
# Possibly a package
if '.' in name:
continue
elif os.path.isdir(os.path.join(path, name)):
# Unfortunately, CPython just crashes if there is a directory
# which ends with a python extension, so work around.
continue
for suffix in SUFFIXES:
if name.endswith(suffix):
name = name[:-len(suffix)]
break
if py3 and name == "badsyntax_pep3120":
# Workaround for issue #166
continue
try:
with catch_warnings():
warnings.simplefilter("ignore", ImportWarning)
fo, pathname, _ = imp.find_module(name, [path])
except (ImportError, IOError, SyntaxError):
continue
except UnicodeEncodeError:
# Happens with Python 3 when there is a filename in some
# invalid encoding
continue
else:
if fo is not None:
fo.close()
else:
# Yay, package
for subname in find_modules(pathname):
if subname != '__init__':
yield '%s.%s' % (name, subname)
yield name
def find_all_modules(path=None):
"""Return a list with all modules in `path`, which should be a list of
directory names. If path is not given, sys.path will be used."""
if path is None:
modules.update(sys.builtin_module_names)
path = sys.path
for p in path:
if not p:
p = os.curdir
for module in find_modules(p):
if not py3 and not isinstance(module, unicode):
try:
module = module.decode(sys.getfilesystemencoding())
except UnicodeDecodeError:
# Not importable anyway, ignore it
continue
modules.add(module)
yield
def find_coroutine():
global fully_loaded
if fully_loaded:
return None
try:
find_iterator.next()
except StopIteration:
fully_loaded = True
return True
def reload():
"""Refresh the list of known modules."""
modules.clear()
for _ in find_all_modules():
pass
find_iterator = find_all_modules()