SysPaths.py (10759:37fd40f8300f) | SysPaths.py (12233:53cf2e32cb59) |
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1# Copyright (c) 2006 The Regents of The University of Michigan 2# All rights reserved. 3# 4# Redistribution and use in source and binary forms, with or without 5# modification, are permitted provided that the following conditions are 6# met: redistributions of source code must retain the above copyright 7# notice, this list of conditions and the following disclaimer; 8# redistributions in binary form must reproduce the above copyright --- 13 unchanged lines hidden (view full) --- 22# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26# 27# Authors: Ali Saidi 28 29import os, sys | 1# Copyright (c) 2006 The Regents of The University of Michigan 2# All rights reserved. 3# 4# Redistribution and use in source and binary forms, with or without 5# modification, are permitted provided that the following conditions are 6# met: redistributions of source code must retain the above copyright 7# notice, this list of conditions and the following disclaimer; 8# redistributions in binary form must reproduce the above copyright --- 13 unchanged lines hidden (view full) --- 22# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26# 27# Authors: Ali Saidi 28 29import os, sys |
30from os.path import join as joinpath 31from os import environ as env | |
32 33config_path = os.path.dirname(os.path.abspath(__file__)) 34config_root = os.path.dirname(config_path) 35 | 30 31config_path = os.path.dirname(os.path.abspath(__file__)) 32config_root = os.path.dirname(config_path) 33 |
36def searchpath(path, filename): 37 for p in path: 38 f = joinpath(p, filename) 39 if os.path.exists(f): 40 return f 41 raise IOError, "Can't find file '%s' on path." % filename | 34class PathSearchFunc(object): 35 _sys_paths = None |
42 | 36 |
43def disk(filename): 44 system() 45 return searchpath(disk.path, filename) | 37 def __init__(self, *subdirs): 38 self._subdir = os.path.join(*subdirs) |
46 | 39 |
47def binary(filename): 48 system() 49 return searchpath(binary.path, filename) | 40 def __call__(self, filename): 41 if self._sys_paths is None: 42 try: 43 paths = os.environ['M5_PATH'].split(':') 44 except KeyError: 45 paths = [ '/dist/m5/system', '/n/poolfs/z/dist/m5/system' ] |
50 | 46 |
51def script(filename): 52 system() 53 return searchpath(script.path, filename) | 47 # expand '~' and '~user' in paths 48 paths = map(os.path.expanduser, paths) |
54 | 49 |
55def system(): 56 if not system.path: 57 try: 58 path = env['M5_PATH'].split(':') 59 except KeyError: 60 path = [ '/dist/m5/system', '/n/poolfs/z/dist/m5/system' ] | 50 # filter out non-existent directories 51 paths = filter(os.path.isdir, paths) |
61 | 52 |
62 # expand '~' and '~user' in paths 63 path = map(os.path.expanduser, path) | 53 if not paths: 54 raise IOError, "Can't find a path to system files." |
64 | 55 |
65 # filter out non-existent directories 66 system.path = filter(os.path.isdir, path) | 56 self._sys_paths = paths |
67 | 57 |
68 if not system.path: 69 raise IOError, "Can't find a path to system files." | 58 filepath = os.path.join(self._subdir, filename) 59 paths = (os.path.join(p, filepath) for p in self._sys_paths) 60 try: 61 return next(p for p in paths if os.path.exists(p)) 62 except StopIteration: 63 raise IOError, "Can't find file '%s' on path." % filename |
70 | 64 |
71 if not binary.path: 72 binary.path = [joinpath(p, 'binaries') for p in system.path] 73 if not disk.path: 74 disk.path = [joinpath(p, 'disks') for p in system.path] 75 if not script.path: 76 script.path = [joinpath(config_root, 'boot')] 77 78system.path = None 79binary.path = None 80disk.path = None 81script.path = None | 65disk = PathSearchFunc('disks') 66binary = PathSearchFunc('binaries') 67script = PathSearchFunc('boot') |