/usr/lib/python2.7/dist-packages/gnatpython/arch.py is in python-gnatpython 54-3+b1.
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# #
# ARCH.PY #
# #
# Copyright (C) 2008 - 2010 Ada Core Technologies, Inc. #
# #
# This program 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. #
# #
# This program 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 this program. If not, see <http://www.gnu.org/licenses/> #
# #
############################################################################
"""This package contains a single class called Arch that allows the user to
instantiate configuration objects containing information about the system
(native or cross).
"""
import platform
import re
import os.path
from gnatpython import config
UNKNOWN = 'unknown'
# __CPU and __OS are internal classes used only to create namespaces
# and have the possibility to declare attributes such as cpu.name in
# Arch class
class _Arch__CPU:
"""CPU attributes
ATTRIBUTES
name: string containing the cpu name
bits: int representing the number of bits for the cpu or 'unknown'
endian: 'big', 'little' or 'unknown'
"""
def __init__(self):
self.name = UNKNOWN
self.bits = UNKNOWN
self.endian = UNKNOWN
class _Arch__OS:
"""OS attributes
ATTRIBUTES
name: os name
version: string containing the os version
exeext: default executable extension
dllext: default shared library extension
is_bareboard: True if the system is bareboard, False otherwise
"""
def __init__(self):
self.name = UNKNOWN
self.version = None
self.exeext = ''
self.dllext = ''
self.is_bareboard = False
self.kernel_version = None
class Arch:
"""Class that allow user to retrieve os/cpu specific informations
ATTRIBUTES
cpu: CPU information (see _Arch__CPU)
os: Operating system information (see _Arch__OS)
is_hie: True if the system is a high integrity system
platform: AdaCore platform product name. Ex: x86-linux
triplet: GCC target
machine: machine name
domain: domain name
is_host: True if this is not a cross context
is_virtual: Set to True if the current system is a virtual one.
Currently set only for Solaris containers
"""
def __init__(self, platform_name=None, version=None, is_host=False,
machine=None):
"""Arch constructor
PARAMETERS
platform: if None then automatically detect current platform (native)
Otherwise should be a valid platform string.
version: if None, assume default OS version or find it automatically
(native case only).
Otherwise should be a valid version string.
is_host: if True the system is not a cross one. Default is False
except if a platform_name is specified or if the
platform_name is equal to the automatically detected one.
RETURN VALUE
A Arch instance
"""
# Create necesarry namespaces using "dummy" classes __CPU and __OS
self.cpu = __CPU() # pylint: disable-msg=E0602
self.os = __OS() # pylint: disable-msg=E0602
# Initialize attributes values
self.platform = platform_name
self.os.version = version
self.machine = machine
self.is_hie = False
self.is_virtual = False
if self.platform is None:
self.is_host = True
else:
self.is_host = is_host
if self.platform is None:
# In this case we try to guess the host platform
self.platform = self.__guess_platform()
else:
if self.platform == self.__guess_platform():
# This is a native platform
self.is_host = True
if self.is_host:
# This is host so we can find the machine name using uname fields
tmp = platform.uname()[1].lower().split('.', 1)
self.machine = tmp[0]
if len(tmp) > 1:
self.domain = tmp[1]
else:
self.domain = ""
# On solaris host detect if we are in a container context or not
tmp = platform.uname()
if tmp[0] == 'SunOS' and tmp[3] == 'Generic_Virtual':
self.is_virtual = True
else:
# This is a target name. Sometimes it's suffixed by the host os
# name. If the name is not a key in config.platform_info try to
# to find a valid name by suppressing -linux, -solaris or -windows
if self.platform not in config.platform_info:
for suffix in ('-linux', '-solaris', '-windows'):
if self.platform.endswith(suffix):
self.platform = self.platform.replace(suffix, '')
break
# Fill other attributes
self.__fill_info()
# Find triplet
self.triplet = config.build_targets[self.platform]['name'] % \
self.__get_dict()
def __get_dict(self):
"""Export os and cpu variables as os_{var} and cpu_{var}
Returns a dictionary containing os and cpu exported vars
and self.__dict__ content
"""
str_dict = self.__dict__.copy()
for (key, var) in self.os.__dict__.items():
str_dict["os_" + key] = var
for (key, var) in self.cpu.__dict__.items():
str_dict["cpu_" + key] = var
return str_dict
def __str__(self):
"""Return a representation string of the object"""
result = "platform: %(platform)s\n" \
"machine: %(machine)s\n" \
"is_hie: %(is_hie)s\n" \
"is_host: %(is_host)s\n" \
"triplet: %(triplet)s\n" \
"OS\n" \
" name: %(os_name)s\n" \
" version: %(os_version)s\n" \
" exeext: %(os_exeext)s\n" \
" dllext: %(os_dllext)s\n" \
" is_bareboard: %(os_is_bareboard)s\n" \
"CPU\n" \
" name: %(cpu_name)s\n" \
" bits: %(cpu_bits)s\n" \
" endian: %(cpu_endian)s" % self.__get_dict()
return result
def __fill_info(self):
"""Internal function that fill info related to the cpu, os, ...
PARAMETERS
None
RETURN VALUE
None
REMARKS
None
"""
self.os.name = config.platform_info[self.platform]['os']
self.cpu.name = config.platform_info[self.platform]['cpu']
self.is_hie = config.platform_info[self.platform]['is_hie']
self.cpu.bits = config.cpu_info[self.cpu.name]['bits']
self.cpu.endian = config.cpu_info[self.cpu.name]['endian']
self.os.is_bareboard = config.os_info[self.os.name]['is_bareboard']
self.os.exeext = config.os_info[self.os.name]['exeext']
self.os.dllext = config.os_info[self.os.name]['dllext']
# If version is not given by the user guess it or set it to the
# default (cross case)
if self.is_host and self.os.version is None:
self.__guess_os_version()
if self.os.version is None:
self.os.version = config.os_info[self.os.name]['version']
def __guess_platform(self):
"""
Internal function that guess base on uname system call the
current platform
PARAMETERS
None
RETURN VALUE
return a string object containing the platform name
REMARKS
None
"""
def re_contains(left, right):
"""Returns right in left (regexp aware)"""
if re.match(left + '$', right) or \
re.match('^' + left, right):
return True
else:
return False
def re_endswith(left, right):
"""Returns right.endswith(left) (regexp aware)"""
return re.match(left + '$', right)
def guess(os_name, p_uname):
"""Guess based on os_name"""
for p_name in config.host_guess:
p_config = config.host_guess[p_name]
if p_config['os'] is not None:
if re_contains(p_config['os'], os_name):
if p_config['cpu'] is None or \
re_endswith(p_config['cpu'], p_uname[4]) or \
re_endswith(p_config['cpu'], p_uname[5]):
# The p_name config matched
if p_name in config.host_aliases:
return config.host_aliases[p_name]
else:
return p_name
# wrong guess
return None
# First look for matching machine name
for p_name in config.host_guess:
if config.host_guess[p_name]['machine'] is not None:
if re_endswith(config.host_guess[p_name]['machine'] + '$',
self.machine):
return p_name
# Else we need to guess
uname = platform.uname()
p_name = guess(uname[0], uname)
if p_name is not None:
return p_name
p_name = guess(uname[2], uname)
if p_name is not None:
return p_name
# Not found !
return UNKNOWN
def __guess_os_version(self):
"""Internal function used to guess the host OS version/dist
PARAMETERS
None
RETURN VALUE
None
REMARKS
Set the self.os.version attribute and on some platform the
self.os.kernel_version
"""
if self.os.name in ('freebsd', 'tru64'):
# Do not compute OS version but read config.os_info table
return
uname = platform.uname()
if self.os.name == 'darwin':
self.os.version = uname[2]
elif self.os.name == 'linux':
self.os.kernel_version = uname[2]
if os.path.isfile('/etc/redhat-release'):
# RedHat distributions
with open('/etc/redhat-release') as rel_f:
content = rel_f.read().strip()
for sub in (('\(.*', ''),
(' ', ''),
('Linux', ''),
('release', ''),
('Enterprise', ''),
('AdvancedServer', 'AS'),
('Server', 'ES'),
('RedHat', 'rh'),
('5\.[0-9]', '5')):
content = re.sub(sub[0], sub[1], content)
self.os.version = content
elif os.path.isfile('/etc/SuSE-release'):
# Suse distributions
release = open('/etc/SuSE-release', 'r')
for line in release:
version = re.search('VERSION = ([0-9\.]+)', line)
if version is not None:
release.close()
self.os.version = 'suse' + version.group(1)
break
release.close()
if self.os.version is None:
self.os.version = 'suse'
elif os.path.isfile('/etc/lsb-release'):
# /etc/lsb-release is present on the previous distrib
# but is not useful. On ubuntu it contains the
# distrib number
release = open('/etc/lsb-release', 'r')
distrib_name = ''
distrib_version = ''
for line in release:
distrib_id = re.search('DISTRIB_ID=(.+)', line.rstrip())
if distrib_id is not None:
distrib_name = distrib_id.group(1).lower()
else:
distrib_release = re.search('DISTRIB_RELEASE=(.*)',
line.rstrip())
if distrib_release is not None:
distrib_version = distrib_release.group(1)
release.close()
if distrib_name:
self.os.version = distrib_name + distrib_version
elif self.os.name == 'aix':
self.os.version = uname[3] + '.' + uname[2]
elif self.os.name == 'hp-ux':
version = uname[2]
if version[0:2] == 'B.':
version = version[2:]
self.os.version = version
elif self.os.name == 'irix':
self.os.version = uname[2]
elif self.os.name == 'lynxos':
self.os.version = ''
elif self.os.name == 'solaris':
self.os.version = '2' + uname[2][1:]
elif self.os.name == 'windows':
self.os.version = uname[2].replace('Server', '')
self.os.kernel_version = uname[3]
return
if __name__ == "__main__":
print Arch()
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