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# Copyright (C) 2015-2017 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/>.
from __future__ import unicode_literals
from __future__ import print_function
from __future__ import division
from __future__ import absolute_import
# Not installing aliases from python-future; it's unreliable and slow.
from builtins import * # noqa
import os
import sys
import vim
import re
# Can't import these from setup.py because it makes nosetests go crazy.
DIR_OF_CURRENT_SCRIPT = os.path.dirname( os.path.abspath( __file__ ) )
DIR_OF_YCMD = "/usr/lib/ycmd"
WIN_PYTHON_PATH = os.path.join( sys.exec_prefix, 'python.exe' )
PYTHON_BINARY_REGEX = re.compile(
r'python((2(\.[67])?)|(3(\.[3-9])?))?(.exe)?$', re.IGNORECASE )
# Not caching the result of this function; users shouldn't have to restart Vim
# after running the install script or setting the
# `g:ycm_server_python_interpreter` option.
def PathToPythonInterpreter():
# Not calling the Python interpreter to check its version as it significantly
# impacts startup time.
from ycmd import utils
python_interpreter = vim.eval( 'g:ycm_server_python_interpreter' )
if python_interpreter:
python_interpreter = utils.FindExecutable( python_interpreter )
if python_interpreter:
return python_interpreter
raise RuntimeError( "Path in 'g:ycm_server_python_interpreter' option "
"does not point to a valid Python 2.7 or 3.4+." )
python_interpreter = _PathToPythonUsedDuringBuild()
if python_interpreter and utils.GetExecutable( python_interpreter ):
return python_interpreter
# As a last resort, we search python in the PATH. We prefer Python 2 over 3
# for the sake of backwards compatibility with ycm_extra_conf.py files out
# there; few people wrote theirs to work on py3.
# So we check 'python2' before 'python' because on some distributions (Arch
# Linux for example), python refers to python3.
python_interpreter = utils.PathToFirstExistingExecutable( [ 'python3',
'python',
'python2' ] )
if python_interpreter:
return python_interpreter
raise RuntimeError( "Cannot find Python 2.7 or 3.4+. "
"Set the 'g:ycm_server_python_interpreter' option "
"to a Python interpreter path." )
def _PathToPythonUsedDuringBuild():
from ycmd import utils
try:
filepath = os.path.join( DIR_OF_YCMD, 'PYTHON_USED_DURING_BUILDING' )
return utils.ReadFile( filepath ).strip()
# We need to check for IOError for Python2 and OSError for Python3
except ( IOError, OSError ):
return None
def _EndsWithPython( path ):
"""Check if given path ends with a python 2.7 or 3.4+ name."""
return path and PYTHON_BINARY_REGEX.search( path ) is not None
def PathToServerScript():
return "/usr/bin/ycmd"
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