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import operator
import os
import subprocess
import sys
from xml.dom import minidom
scripts_dir = os.path.dirname(__file__)
base_dir = os.path.dirname(scripts_dir)
_cached_dname, _cached_dversion = None, None
_cached_packages = None
_UNSTABLE_NAMES = {
'debian': 'unstable',
'fedora': 'rawhide',
'mandrivalinux': 'cooker',
'ubuntu': 'unstable',
'tuquito':'unstable',
}
def _pipe_lower(args):
out, err_ = subprocess.Popen(args, stdout=subprocess.PIPE).communicate()
return out.strip().lower()
def get_distribution():
global _cached_dname, _cached_dversion
if _cached_dname:
return _cached_dname, _cached_dversion
if 'SJH_DISTRIBUTION' in os.environ:
_cached_dname, _cached_dversion = \
os.environ['SJH_DISTRIBUTION'].split('-')
return _cached_dname, _cached_dversion
try:
_cached_dname = _pipe_lower(['lsb_release', '-is'])
_cached_dversion = _pipe_lower(['lsb_release', '-rs'])
except OSError:
sys.stderr.write('ERROR: Could not run lsb_release. Is it installed?\n')
return _cached_dname, _cached_dversion
def check_package(package):
name, version_ = get_distribution()
if name in ['fedora', 'mandrivalinux']:
ret = subprocess.call(['rpm', '--quiet', '-q', package])
return ret == 0
elif name in ['ubuntu', 'debian', 'tuquito']:
cmd = ["dpkg-query", "-f='${status}'", "-W", package]
out, err_ = subprocess.Popen(cmd, stdout=subprocess.PIPE).communicate()
return out.find('install ok installed') != -1
return None
def _check_suffix(name, suffixes):
"""
Returns a list of all matching suffixes for <name>.
"""
return [name for suffix in suffixes if name.endswith(suffix)]
def _parse_dependencies(dname, dversion):
if not (dname and dversion):
return []
suffixes = ['alldistros.xml', '%s-allversions.xml' % (dname, ),
'%s-%s.xml' % (dname, dversion)]
dirname = os.path.join(base_dir, 'config', 'sysdeps')
filenames = [os.path.join(dirname, fname)
for fname in os.listdir(dirname)
if _check_suffix(fname, suffixes)]
# check whether we have a file matching the exact distro version
if not [name for name in filenames if name.endswith(suffixes[-1])]:
if dname not in _UNSTABLE_NAMES:
sys.stderr.write('ERROR: %r is not a supported distro. If you '
'think it is sufficiently recent to contain everything the '
'latest development version of Sugar needs and would like to '
'see it supported, please file a ticket at dev.sugarlabs.org.'
'\n' % (dname, ))
return []
uversion = _UNSTABLE_NAMES[dname]
if (dversion == uversion):
# no config for unstable
return []
sys.stderr.write('Warning: unknown distro version, automatic fallback '
'to %s.\n' % (uversion, ))
return _parse_dependencies(dname, uversion)
return [minidom.parse(fname)
for fname in filenames if os.path.exists(fname)]
def get_packages():
global _cached_packages
if _cached_packages is not None:
return _cached_packages
dname, dversion = get_distribution()
documents = _parse_dependencies(dname, dversion)
_cached_packages = []
if not documents:
return _cached_packages
roots = [doc.childNodes[0] for doc in documents]
for node in reduce(operator.add, [root.childNodes for root in roots]):
if node.nodeType == node.ELEMENT_NODE:
if node.nodeName == 'package':
name = node.getAttribute('name')
if node.hasAttribute('source'):
source = node.getAttribute('source')
else:
source = None
_cached_packages.append((name, source))
return _cached_packages
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