You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
118 lines
3.8 KiB
Python
118 lines
3.8 KiB
Python
"""architecture matching
|
|
|
|
@copyright: 2014, Ansgar Burchardt <ansgar@debian.org>
|
|
@license: GPL-2+
|
|
"""
|
|
|
|
# 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 2 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, write to the Free Software
|
|
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
import errno
|
|
|
|
def _load_table(path):
|
|
table = []
|
|
with open(path, 'r') as fh:
|
|
for line in fh:
|
|
if not line or line.startswith('#'):
|
|
continue
|
|
table.append(line.split())
|
|
return table
|
|
|
|
_cached_cputable = None
|
|
def _cputable():
|
|
global _cached_cputable
|
|
if _cached_cputable is None:
|
|
_cached_cputable = _load_table('/usr/share/dpkg/cputable')
|
|
return _cached_cputable
|
|
|
|
_cached_arch2tuple = None
|
|
_cached_tuple2arch = None
|
|
def _tupletable():
|
|
global _cached_arch2tuple, _cached_tuple2arch
|
|
if _cached_arch2tuple is None or _cached_tuple2arch is None:
|
|
try:
|
|
tripletable = False
|
|
table = _load_table('/usr/share/dpkg/tupletable')
|
|
except IOError as e:
|
|
if e.errno != errno.ENOENT:
|
|
raise
|
|
tripletable = True
|
|
table = _load_table('/usr/share/dpkg/triplettable')
|
|
|
|
arch2tuple = {}
|
|
tuple2arch = {}
|
|
|
|
def add_tuple(tuple, arch):
|
|
if tripletable:
|
|
tuple = "base-{}".format(tuple)
|
|
arch2tuple[arch] = tuple
|
|
tuple2arch[tuple] = arch
|
|
|
|
for row in table:
|
|
if '<cpu>' in row[0] or '<cpu>' in row[1]:
|
|
for cpu in _cputable():
|
|
replaced_row = [ column.replace('<cpu>', cpu[0]) for column in row ]
|
|
add_tuple(replaced_row[0], replaced_row[1])
|
|
else:
|
|
add_tuple(row[0], row[1])
|
|
|
|
_cached_arch2tuple = arch2tuple
|
|
_cached_tuple2arch = tuple2arch
|
|
return _cached_tuple2arch, _cached_arch2tuple
|
|
|
|
class InvalidArchitecture(Exception):
|
|
pass
|
|
|
|
def Debian_arch_to_Debian_tuple(arch):
|
|
parts = arch.split('-')
|
|
|
|
# Handle architecture wildcards
|
|
if 'any' in parts:
|
|
if len(parts) == 4:
|
|
return parts
|
|
elif len(parts) == 3:
|
|
return 'any', parts[0], parts[1], parts[2]
|
|
elif len(parts) == 2:
|
|
return 'any', 'any', parts[0], parts[1]
|
|
else:
|
|
return 'any', 'any', 'any', 'any'
|
|
|
|
if len(parts) == 2 and parts[0] == 'linux':
|
|
arch = parts[1]
|
|
|
|
tuple = _tupletable()[1].get(arch, None)
|
|
if tuple is None:
|
|
return None
|
|
return tuple.split('-', 3)
|
|
|
|
def match_architecture(arch, wildcard):
|
|
# 'all' has no valid tuple
|
|
if arch == 'all' or wildcard == 'all':
|
|
return arch == wildcard
|
|
if wildcard is 'any' or arch == wildcard:
|
|
return True
|
|
|
|
tuple_arch = Debian_arch_to_Debian_tuple(arch)
|
|
tuple_wildcard = Debian_arch_to_Debian_tuple(wildcard)
|
|
|
|
if tuple_arch is None or len(tuple_arch) != 4:
|
|
raise InvalidArchitecture('{0} is not a valid architecture name'.format(arch))
|
|
if tuple_wildcard is None or len(tuple_wildcard) != 4:
|
|
raise InvalidArchitecture('{0} is not a valid architecture name or wildcard'.format(wildcard))
|
|
|
|
for i in range(0,4):
|
|
if tuple_arch[i] != tuple_wildcard[i] and tuple_wildcard[i] != 'any':
|
|
return False
|
|
return True
|