# -*- coding: utf-8 -*- # Copyright © Cloud Linux GmbH & Cloud Linux Software, Inc 2010-2019 All Rights Reserved # # Licensed under CLOUD LINUX LICENSE AGREEMENT # http://cloudlinux.com/docs/LICENSE.TXT from __future__ import print_function from __future__ import division from __future__ import absolute_import import os import re from clselect.clselectexcept import ClSelectExcept class Interpreter(object): def __init__(self, prefix, versions_info=None): """ :param prefix: mandatory prefix for nodejs root :param versions_info: optional precomputed dict with handy info about versions """ if versions_info is None: from clselect.clselectnodejs import scan_node_versions versions_info = scan_node_versions() self.prefix = prefix # Guess two things at once: self.is_venv = self._guess_version_by_prefix() # Our NodeJS interpreters is always in usr/bin on both CL6/CL7, but # this code is also called for virtual environments that use # different path if self.is_venv: folder_ = 'bin' else: folder_ = 'usr/bin' self.binary = os.path.join(self.prefix, folder_, 'node') if not os.path.isfile(self.binary): raise ClSelectExcept.InterpreterError( 'Cannot find node binary: %s' % self.binary) self.version_full = versions_info[self.version]['full_version'] def _guess_version_by_prefix(self): # Example prefixes: # /opt/alt/alt-nodejs6/root # /home//nodevenv//6 if self.prefix.startswith('/opt/alt'): venv = False pattern = r'/opt/alt/alt-nodejs(\d+)/root' else: venv = True pattern = r'.+/nodevenv/.+/(\d+)' self.version = re.findall(pattern, self.prefix)[0] return venv def __repr__(self): return ( "%s.%s(prefix='%s', version='%s', binary='%s', " "version_full='%s')" % ( self.__class__.__module__, self.__class__.__name__, self.prefix, self.version, self.binary, self.version_full )) def as_dict(self, key=None): i = { 'prefix': self.prefix, 'binary': self.binary, 'version': self.version, 'version_full': self.version_full, } if key: del i[key] return {getattr(self, key): i} return i def interpreters(key=None): interps = [] from clselect.clselectnodejs import scan_node_versions versions_info = scan_node_versions() for ver_info in versions_info.values(): try: interpreter = Interpreter(ver_info['root_path'], versions_info) except ClSelectExcept.InterpreterError: continue interps.append(interpreter) if key: return dict((getattr(i, key), i) for i in interps) else: return interps def interpreters_dict(key): return dict(list(i.as_dict(key).items())[0] for i in interpreters())