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#!/usr/bin/env python
from base import *
from helpers import *
try:
import xattr
except ImportError:
xattr = None
class OSFS(FS):
"""The most basic of filesystems. Simply shadows the underlaying filesytem
of the Operating System.
"""
def __init__(self, root_path, thread_syncronize=True):
FS.__init__(self, thread_syncronize=thread_syncronize)
expanded_path = normpath(os.path.expanduser(os.path.expandvars(root_path)))
if not os.path.exists(expanded_path):
raise ResourceNotFoundError("NO_DIR", expanded_path, msg="Root directory does not exist: %(path)s")
if not os.path.isdir(expanded_path):
raise ResourceNotFoundError("NO_DIR", expanded_path, msg="Root path is not a directory: %(path)s")
self.root_path = normpath(os.path.abspath(expanded_path))
def __str__(self):
return "<OSFS: %s>" % self.root_path
__repr__ = __str__
def getsyspath(self, path, allow_none=False):
sys_path = os.path.join(self.root_path, makerelative(self._resolve(path))).replace('/', os.sep)
return sys_path
def open(self, path, mode="r", **kwargs):
try:
f = open(self.getsyspath(path), mode, kwargs.get("buffering", -1))
except IOError, e:
if e.errno == 2:
raise ResourceNotFoundError("NO_FILE", path)
raise OperationFailedError("OPEN_FAILED", path, details=e, msg=str(e))
return f
def exists(self, path):
path = self.getsyspath(path)
return os.path.exists(path)
def isdir(self, path):
path = self.getsyspath(path)
return os.path.isdir(path)
def isfile(self, path):
path = self.getsyspath(path)
return os.path.isfile(path)
def ishidden(self, path):
return path.startswith('.')
def listdir(self, path="./", wildcard=None, full=False, absolute=False, hidden=True, dirs_only=False, files_only=False):
try:
paths = os.listdir(self.getsyspath(path))
except (OSError, IOError), e:
raise OperationFailedError("LISTDIR_FAILED", path, details=e, msg="Unable to get directory listing: %(path)s - (%(details)s)")
return self._listdir_helper(path, paths, wildcard, full, absolute, hidden, dirs_only, files_only)
def makedir(self, path, mode=0777, recursive=False, allow_recreate=False):
sys_path = self.getsyspath(path)
try:
if recursive:
os.makedirs(sys_path, mode)
else:
if not allow_recreate and self.exists(path):
raise OperationFailedError("MAKEDIR_FAILED", dirname, msg="Can not create a directory that already exists (try allow_recreate=True): %(path)s")
try:
os.mkdir(sys_path, mode)
except OSError, e:
if allow_recreate:
if e.errno != 17:
raise OperationFailedError("MAKEDIR_FAILED", path)
else:
raise OperationFailedError("MAKEDIR_FAILED", path)
except WindowsError, e:
if allow_recreate:
if e.errno != 183:
raise OperationFailedError("MAKEDIR_FAILED", path)
else:
raise OperationFailedError("MAKEDIR_FAILED", path)
except OSError, e:
if e.errno == 17:
return
else:
raise OperationFailedError("MAKEDIR_FAILED", path, details=e)
def remove(self, path):
sys_path = self.getsyspath(path)
try:
os.remove(sys_path)
except OSError, e:
raise OperationFailedError("REMOVE_FAILED", path, details=e)
def removedir(self, path, recursive=False,force=False):
sys_path = self.getsyspath(path)
# Don't remove the root directory of this FS
if path in ("","/"):
return
if force:
for path2 in self.listdir(path,absolute=True,files_only=True):
self.remove(path2)
for path2 in self.listdir(path,absolute=True,dirs_only=True):
self.removedir(path2,force=True)
try:
os.rmdir(sys_path)
except OSError, e:
raise OperationFailedError("REMOVEDIR_FAILED", path, details=e)
# Using os.removedirs() for this can result in dirs being
# removed outside the root of this FS, so we recurse manually.
if recursive:
try:
self.removedir(dirname(path),recursive=True)
except OperationFailedError:
pass
def rename(self, src, dst):
if not issamedir(src, dst):
raise ValueError("Destination path must the same directory (user the move method for moving to a different directory)")
path_src = self.getsyspath(src)
path_dst = self.getsyspath(dst)
try:
os.rename(path_src, path_dst)
except OSError, e:
raise OperationFailedError("RENAME_FAILED", src)
def getinfo(self, path):
sys_path = self.getsyspath(path)
try:
stats = os.stat(sys_path)
except OSError, e:
raise FSError("UNKNOWN_ERROR", path, details=e)
info = dict((k, getattr(stats, k)) for k in dir(stats) if not k.startswith('__') )
info['size'] = info['st_size']
ct = info.get('st_ctime', None)
if ct is not None:
info['created_time'] = datetime.datetime.fromtimestamp(ct)
at = info.get('st_atime', None)
if at is not None:
info['accessed_time'] = datetime.datetime.fromtimestamp(at)
mt = info.get('st_mtime', None)
if mt is not None:
info['modified_time'] = datetime.datetime.fromtimestamp(at)
return info
def getsize(self, path):
sys_path = self.getsyspath(path)
try:
stats = os.stat(sys_path)
except OSError, e:
raise FSError("UNKNOWN_ERROR", path, details=e)
return stats.st_size
def setxattr(self, path, key, value):
self._lock.acquire()
try:
if xattr is None:
return FS.setxattr(self, path, key, value)
try:
xattr.xattr(self.getsyspath(path))[key]=value
except IOError, e:
if e.errno == 95:
return FS.setxattr(self, path, key, value)
else:
raise OperationFailedError('XATTR_FAILED', path, details=e)
finally:
self._lock.release()
def getxattr(self, path, key, default=None):
self._lock.acquire()
try:
if xattr is None:
return FS.getxattr(self, path, key, default)
try:
return xattr.xattr(self.getsyspath(path)).get(key)
except IOError, e:
if e.errno == 95:
return FS.getxattr(self, path, key, default)
else:
raise OperationFailedError('XATTR_FAILED', path, details=e)
finally:
self._lock.release()
def removexattr(self, path, key):
self._lock.acquire()
try:
if xattr is None:
return FS.removexattr(self, path, key)
try:
del xattr.xattr(self.getsyspath(path))[key]
except KeyError:
pass
except IOError, e:
if e.errono == 95:
return FS.removexattr(self, path, key)
else:
raise OperationFailedError('XATTR_FAILED', path, details=e)
finally:
self._lock.release()
def listxattrs(self, path):
self._lock.acquire()
try:
if xattr is None:
return FS.listxattrs(self, path)
try:
return xattr.xattr(self.getsyspath(path)).keys()
except IOError, e:
if errono == 95:
return FS.listxattrs(self, path)
else:
raise OperationFailedError('XATTR_FAILED', path, details=e)
finally:
self._lock.release()
if __name__ == "__main__":
osfs = OSFS('testfs')
#a = xattr.xattr('/home/will/projects/pyfilesystem/fs/testfs/test.txt')
#a['user.comment'] = 'world'
#print xattr.xattr('/home/will/projects/pyfilesystem/fs/testfs/test.txt').keys()
print osfs.listxattrs('test.txt')
osfs.removexattr('test.txt', 'user.foo')
#print osfs.listxattrs('test.txt')
osfs.setxattr('test.txt', 'user.foo', 'bar')
print osfs.getxattr('test.txt', 'user.foo')
print osfs.listxattrs('test.txt')
print osfs.getxattrs('test.txt')
#
#osfs = OSFS("~/projects")
#
#
##for p in osfs.walk("tagging-trunk", search='depth'):
## print p
#
#import browsewin
#browsewin.browse(osfs)
#
#print_fs(osfs)
#
##print osfs.listdir("/projects/fs")
#
##sub_fs = osfs.open_dir("projects/")
#
##print sub_fs
#
##sub_fs.open('test.txt')
#
##print sub_fs.listdir(dirs_only=True)
##print sub_fs.listdir()
##print_fs(sub_fs, max_levels=2)
#
##for f in osfs.listdir():
## print f
#
##print osfs.listdir('projects', dirs_only=True, wildcard="d*")
#
##print_fs(osfs, 'projects/')
#
#print pathjoin('/', 'a')
#
#print pathjoin('a/b/c', '../../e/f')
|
