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importcompletion.py
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133 lines (110 loc) · 3.89 KB
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# The MIT License
#
# Copyright (c) 2009-2010 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.
importimp
importos
importsys
# The cached list of all known modules
modules=set()
fully_loaded=False
defcomplete(line,cw):
"""Construct a full list of possibly completions for imports."""
ifnotcw:
returnNone
tokens=line.split()
iftokens[0]notin ['from','import']:
returnNone
completing_from=False
iftokens[0]=='from':
iflen(tokens)>3:
if'.'incw:
# This will result in a SyntaxError, so do not return
# any matches
returnNone
completing_from=True
cw='%s.%s'% (tokens[1],cw)
eliflen(tokens)==3:
return ['import']
matches=list()
fornameinmodules:
ifnot (name.startswith(cw)andname.find('.',len(cw))==-1):
continue
ifcompleting_from:
name=name[len(tokens[1])+1:]
matches.append(name)
ifnotmatches:
return []
returnmatches
deffind_modules(path):
"""Find all modules (and packages) for a given directory."""
ifnotos.path.isdir(path):
# Perhaps a zip file
return
fornameinos.listdir(path):
ifnotany(name.endswith(suffix[0])forsuffixinimp.get_suffixes()):
# Possibly a package
if'.'inname:
continue
elifos.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
name=os.path.splitext(name)[0]
try:
fo,pathname,_=imp.find_module(name, [path])
except (ImportError,SyntaxError):
continue
else:
iffoisnotNone:
fo.close()
else:
# Yay, package
forsubnameinfind_modules(pathname):
ifsubname!='__init__':
yield'%s.%s'% (name,subname)
yieldname
deffind_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."""
ifpathisNone:
modules.update(sys.builtin_module_names)
path=sys.path
forpinpath:
ifnotpath:
path=os.curdir
formoduleinfind_modules(p):
modules.add(module)
yield
deffind_coroutine():
globalfully_loaded
iffully_loaded:
returnNone
try:
find_iterator.next()
exceptStopIteration:
fully_loaded=True
returnTrue
defreload():
"""Refresh the list of known modules."""
modules.clear()
for_infind_all_modules():
pass
find_iterator=find_all_modules()