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#Copyright (c) 2011 Walter Bender
# 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.
#
# You should have received a copy of the GNU General Public License
# along with this library; if not, write to the Free Software
# Foundation, 51 Franklin Street, Suite 500 Boston, MA 02110-1335 USA
import os
from StringIO import StringIO
try:
OLD_SUGAR_SYSTEM = False
import json
json.dumps
from json import load as jload
from json import dump as jdump
except (ImportError, AttributeError):
try:
import simplejson as json
from simplejson import load as jload
from simplejson import dump as jdump
except:
OLD_SUGAR_SYSTEM = True
XO1 = 'xo1'
XO15 = 'xo1.5'
XO175 = 'xo1.75'
UNKNOWN = 'unknown'
def get_hardware():
""" Determine whether we are using XO 1.0, 1.5, or "unknown" hardware """
product = _get_dmi('product_name')
if product is None:
if os.path.exists('/sys/devices/platform/lis3lv02d/position'):
return XO175 # FIXME: temporary check for XO 1.75
elif os.path.exists('/etc/olpc-release') or \
os.path.exists('/sys/power/olpc-pm'):
return XO1
else:
return UNKNOWN
if product != 'XO':
return UNKNOWN
version = _get_dmi('product_version')
if version == '1':
return XO1
elif version == '1.5':
return XO15
else:
return XO175
def _get_dmi(node):
''' The desktop management interface should be a reliable source
for product and version information. '''
path = os.path.join('/sys/class/dmi/id', node)
try:
return open(path).readline().strip()
except:
return None
def json_load(text):
""" Load JSON data using what ever resources are available. """
if OLD_SUGAR_SYSTEM is True:
listdata = json.read(text)
else:
# strip out leading and trailing whitespace, nulls, and newlines
io = StringIO(text)
try:
listdata = jload(io)
except ValueError:
# assume that text is ascii list
listdata = text.split()
for i, value in enumerate(listdata):
listdata[i] = int(value)
return listdata
def json_dump(data):
""" Save data using available JSON tools. """
if OLD_SUGAR_SYSTEM is True:
return json.write(data)
else:
_io = StringIO()
jdump(data, _io)
return _io.getvalue()
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