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sh.py
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sh.py
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#!/usr/bin/env python
# ***** BEGIN LICENSE BLOCK *****
# Version: MPL 1.1/GPL 2.0/LGPL 2.1
#
# The contents of this file are subject to the Mozilla Public License
# Version 1.1 (the "License"); you may not use this file except in
# compliance with the License. You may obtain a copy of the License at
# http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS IS"
# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
# License for the specific language governing rights and limitations
# under the License.
#
# The Original Code is Komodo code.
#
# The Initial Developer of the Original Code is ActiveState Software Inc.
# Portions created by ActiveState Software Inc are Copyright (C) 2000-2007
# ActiveState Software Inc. All Rights Reserved.
#
# Contributor(s):
# ActiveState Software Inc
#
# Alternatively, the contents of this file may be used under the terms of
# either the GNU General Public License Version 2 or later (the "GPL"), or
# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
# in which case the provisions of the GPL or the LGPL are applicable instead
# of those above. If you wish to allow use of your version of this file only
# under the terms of either the GPL or the LGPL, and not to allow others to
# use your version of this file under the terms of the MPL, indicate your
# decision by deleting the provisions above and replace them with the notice
# and other provisions required by the GPL or the LGPL. If you do not delete
# the provisions above, a recipient may use your version of this file under
# the terms of any one of the MPL, the GPL or the LGPL.
#
# ***** END LICENSE BLOCK *****
"""
Some path and shell utility methods.
"""
import os
import sys
import shutil
import string
import glob
import logging
#---- globals
log = logging.getLogger("sh")
#---- public interface
def isdir(dirname):
r"""os.path.isdir() doesn't work for UNC mount points. Fake it.
# For an existing mount point (want: isdir() == 1)
os.path.ismount(r"\\netshare\apps") -> 1
os.path.exists(r"\\netshare\apps") -> 0
os.path.isdir(r"\\netshare\apps") -> 0
os.listdir(r"\\netshare\apps") -> [...contents...]
# For a non-existant mount point (want: isdir() == 0)
os.path.ismount(r"\\netshare\foo") -> 1
os.path.exists(r"\\netshare\foo") -> 0
os.path.isdir(r"\\netshare\foo") -> 0
os.listdir(r"\\netshare\foo") -> WindowsError
# For an existing dir under a mount point (want: isdir() == 1)
os.path.mount(r"\\netshare\apps\Komodo") -> 0
os.path.exists(r"\\netshare\apps\Komodo") -> 1
os.path.isdir(r"\\netshare\apps\Komodo") -> 1
os.listdir(r"\\netshare\apps\Komodo") -> [...contents...]
# For a non-existant dir/file under a mount point (want: isdir() == 0)
os.path.ismount(r"\\netshare\apps\foo") -> 0
os.path.exists(r"\\netshare\apps\foo") -> 0
os.path.isdir(r"\\netshare\apps\foo") -> 0
os.listdir(r"\\netshare\apps\foo") -> [] # as if empty contents
# For an existing file under a mount point (want: isdir() == 0)
os.path.ismount(r"\\netshare\apps\Komodo\latest.komodo-devel.txt") -> 0
os.path.exists(r"\\netshare\apps\Komodo\latest.komodo-devel.txt") -> 1
os.path.isdir(r"\\netshare\apps\Komodo\latest.komodo-devel.txt") -> 0
os.listdir(r"\\netshare\apps\Komodo\latest.komodo-devel.txt") -> WindowsError
"""
if sys.platform[:3] == 'win' and dirname[:2] == r'\\':
if os.path.exists(dirname):
return os.path.isdir(dirname)
try:
os.listdir(dirname)
except WindowsError:
return 0
else:
return os.path.ismount(dirname)
else:
return os.path.isdir(dirname)
def mkdir(newdir, mode=0777):
"""works the way a good mkdir should :)
- already exists, silently complete
- regular file in the way, raise an exception
- parent directory(ies) does not exist, make them as well
"""
if isdir(newdir):
pass
elif os.path.isfile(newdir):
raise OSError("a file with the same name as the desired " \
"dir, '%s', already exists." % newdir)
else:
head, tail = os.path.split(newdir)
if head and not isdir(head):
mkdir(head, mode)
if tail:
log.debug('mkdir "%s"' % newdir)
os.mkdir(newdir, mode)
def copy(src, dst):
"""works the way a good copy should :)
- no source, raise an exception
- destination directory, make a file in that dir named after src
- source directory, recursively copy the directory to the destination
- filename wildcarding allowed
NOTE:
- This copy CHANGES THE FILE ATTRIBUTES.
"""
assert src != dst, "You are try to copy a file to itself. Bad you! "\
"src='%s' dst='%s'" % (src, dst)
# determine if filename wildcarding is being used
# (only raise error if non-wildcarded source file does not exist)
if string.find(src, '*') != -1 or \
string.find(src, '?') != -1 or \
string.find(src, '[') != -1:
usingWildcards = 1
srcFiles = glob.glob(src)
else:
usingWildcards = 0
srcFiles = [src]
for srcFile in srcFiles:
if os.path.isfile(srcFile):
if usingWildcards:
srcFileHead, srcFileTail = os.path.split(srcFile)
srcHead, srcTail = os.path.split(src)
dstHead, dstTail = os.path.split(dst)
if dstTail == srcTail:
dstFile = os.path.join(dstHead, srcFileTail)
else:
dstFile = os.path.join(dst, srcFileTail)
else:
dstFile = dst
dstFileHead, dstFileTail = os.path.split(dstFile)
if dstFileHead and not isdir(dstFileHead):
mkdir(dstFileHead)
if isdir(dstFile):
dstFile = os.path.join(dstFile, os.path.basename(srcFile))
if os.path.isfile(dstFile):
# make sure 'dstFile' is writeable
try:
os.chmod(dstFile, 0777)
except OSError, ex:
log.warn(str(ex))
log.debug('copy "%s" "%s"' % (srcFile, dstFile))
try:
shutil.copy(srcFile, dstFile)
except OSError, ex:
log.warn(str(ex))
# make the new 'dstFile' writeable
try:
os.chmod(dstFile, 0777)
except OSError, ex:
log.warn(str(ex))
elif isdir(srcFile):
srcFiles = os.listdir(srcFile)
if not os.path.exists(dst):
mkdir(dst)
for f in srcFiles:
s = os.path.join(srcFile, f)
d = os.path.join(dst, f)
try:
copy(s, d)
except (IOError, os.error), why:
raise OSError("Can't copy %s to %s: %s"\
% (repr(s), repr(d), str(why)))
elif not usingWildcards:
raise OSError("Source file %s does not exist" % repr(srcFile))
def _rmtreeOnError(rmFunction, filePath, excInfo):
if excInfo[0] == OSError:
# presuming because file is read-only
os.chmod(filePath, 0777)
rmFunction(filePath)
def rmtree(dirname):
shutil.rmtree(dirname, 0, _rmtreeOnError)
def rm(path):
"""Remove the given path (be it a file or directory).
Raises OSError if the given path does not exist. Can also raise an
EnvironmentError if the path cannot be removed for some reason.
"""
if path.find('*') != -1 or path.find('?') != -1 or path.find('[') != -1:
paths = glob.glob(path)
if not paths:
raise OSError(2, "No such file or directory: '%s'" % path)
else:
paths = [path]
for path in paths:
if os.path.isfile(path) or os.path.islink(path):
try:
os.remove(path)
except OSError, ex:
if ex.errno == 13: # OSError: [Errno 13] Permission denied
os.chmod(path, 0777)
os.remove(path)
else:
raise
elif os.path.isdir(path):
for f in os.listdir(path):
rm(os.path.join(path, f))
os.rmdir(path)
else:
raise OSError(2, "No such file or directory", path)