YouCompleteMe/python/ycm/paths.py

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#!/usr/bin/env python
#
# Copyright (C) 2015 YouCompleteMe contributors.
#
# This file is part of YouCompleteMe.
#
# YouCompleteMe is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# YouCompleteMe is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with YouCompleteMe. If not, see <http://www.gnu.org/licenses/>.
import os
import vim
import functools
from ycmd import utils
DIR_OF_CURRENT_SCRIPT = os.path.dirname( os.path.abspath( __file__ ) )
WIN_PYTHON27_PATH = 'C:\python27\python.exe'
WIN_PYTHON26_PATH = 'C:\python26\python.exe'
def Memoize( obj ):
cache = obj.cache = {}
@functools.wraps( obj )
def memoizer( *args, **kwargs ):
key = str( args ) + str( kwargs )
if key not in cache:
cache[ key ] = obj( *args, **kwargs )
return cache[ key ]
return memoizer
@Memoize
def PathToPythonInterpreter():
user_path_to_python = vim.eval( 'g:ycm_path_to_python_interpreter' )
if user_path_to_python:
return user_path_to_python
# We check for 'python2' before 'python' because some OS's (I'm looking at
# you Arch Linux) have made the... interesting decision to point
# /usr/bin/python to python3.
python_names = [ 'python2', 'python' ]
path_to_python = utils.PathToFirstExistingExecutable( python_names )
if path_to_python:
return path_to_python
# On Windows, Python may not be on the PATH at all, so we check some common
# install locations.
if utils.OnWindows():
if os.path.exists( WIN_PYTHON27_PATH ):
return WIN_PYTHON27_PATH
elif os.path.exists( WIN_PYTHON26_PATH ):
return WIN_PYTHON26_PATH
raise RuntimeError( 'Python 2.7/2.6 not installed!' )
def PathToServerScript():
return os.path.join( DIR_OF_CURRENT_SCRIPT, '..', '..', 'third_party',
'ycmd', 'ycmd' )
def PathToCheckCoreVersion():
return os.path.join( DIR_OF_CURRENT_SCRIPT, '..', '..', 'third_party',
'ycmd', 'check_core_version.py' )