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#
# RTEMS Tools Project (http://www.rtems.org/)
# Copyright 2010-2012 Chris Johns (chrisj@rtems.org)
# All rights reserved.
#
# This file is part of the RTEMS Tools package in 'rtems-tools'.
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#
# Manage paths locally. The internally the path is in Unix or shell format and
# we convert to the native format when performing operations at the Python
# level. This allows macro expansion to work.
#
import log
import os
import shutil
import string
import error
windows = os.name == 'nt'
def host(path):
if path is not None:
while '//' in path:
path = path.replace('//', '/')
if windows and len(path) > 2:
if path[0] == '/' and path[2] == '/' and \
(path[1] in string.ascii_lowercase or \
path[1] in string.ascii_uppercase):
path = ('%s:%s' % (path[1], path[2:])).replace('/', '\\')
return path
def shell(path):
if path is not None:
if windows and len(path) > 1 and path[1] == ':':
path = ('/%s%s' % (path[0], path[2:])).replace('\\', '/')
while '//' in path:
path = path.replace('//', '/')
return path
def basename(path):
return shell(os.path.basename(path))
def dirname(path):
return shell(os.path.dirname(path))
def join(path, *args):
path = shell(path)
for arg in args:
if len(path):
path += '/' + shell(arg)
else:
path = shell(arg)
return shell(path)
def abspath(path):
return shell(os.path.abspath(host(path)))
def splitext(path):
root, ext = os.path.splitext(host(path))
return shell(root), ext
def exists(paths):
if type(paths) == list:
results = []
for p in paths:
results += [os.path.exists(host(p))]
return results
return os.path.exists(host(paths))
def isdir(path):
return os.path.isdir(host(path))
def isfile(path):
return os.path.isfile(host(path))
def isabspath(path):
return path[0] == '/'
def iswritable(path):
return os.access(host(path), os.W_OK)
def ispathwritable(path):
path = host(path)
while len(path) != 0:
if os.path.exists(path):
return iswritable(path)
path = os.path.dirname(path)
return False
def mkdir(path):
path = host(path)
if exists(path):
if not isdir(path):
raise error.general('path exists and is not a directory: %s' % (path))
else:
if windows:
try:
os.makedirs(host(path))
except IOError, err:
raise error.general('cannot make directory: %s' % (path))
except OSError, err:
raise error.general('cannot make directory: %s' % (path))
except WindowsError, err:
raise error.general('cannot make directory: %s' % (path))
else:
try:
os.makedirs(host(path))
except IOError, err:
raise error.general('cannot make directory: %s' % (path))
except OSError, err:
raise error.general('cannot make directory: %s' % (path))
def removeall(path):
def _onerror(function, path, excinfo):
import stat
if not os.access(path, os.W_OK):
# Is the error an access error ?
os.chmod(path, stat.S_IWUSR)
function(path)
else:
print 'removeall error: %s' % (path)
raise
path = host(path)
shutil.rmtree(path, onerror = _onerror)
return
def expand(name, paths):
l = []
for p in paths:
l += [join(p, name)]
return l
def copy_tree(src, dst):
hsrc = host(src)
hdst = host(dst)
if os.path.exists(src):
names = os.listdir(src)
else:
names = []
if not os.path.isdir(dst):
os.makedirs(dst)
for name in names:
srcname = os.path.join(src, name)
dstname = os.path.join(dst, name)
try:
if os.path.islink(srcname):
linkto = os.readlink(srcname)
if os.path.exists(dstname):
if os.path.islink(dstname):
dstlinkto = os.readlink(dstname)
if linkto != dstlinkto:
log.warning('copying tree: update of link does not match: %s -> %s' % \
(dstname, dstlinkto))
os.remove(dstname)
else:
log.warning('copying tree: destination is not a link: %s' % \
(dstname))
os.remove(dstname)
else:
os.symlink(linkto, dstname)
elif os.path.isdir(srcname):
copy_tree(srcname, dstname)
else:
shutil.copy2(srcname, dstname)
except shutil.Error, err:
raise error.general('copying tree: %s -> %s: %s' % (src, dst, str(err)))
except EnvironmentError, why:
raise error.general('copying tree: %s -> %s: %s' % (srcname, dstname, str(why)))
try:
shutil.copystat(src, dst)
except OSError, why:
if windows:
if WindowsError is not None and isinstance(why, WindowsError):
pass
else:
raise error.general('copying tree: %s -> %s: %s' % (src, dst, str(why)))
if __name__ == '__main__':
print host('/a/b/c/d-e-f')
print host('//a/b//c/d-e-f')
print shell('/w/x/y/z')
print basename('/as/sd/df/fg/me.txt')
print dirname('/as/sd/df/fg/me.txt')
print join('/d', 'g', '/tyty/fgfg')
windows = True
print host('/a/b/c/d-e-f')
print host('//a/b//c/d-e-f')
print shell('/w/x/y/z')
print shell('w:/x/y/z')
print basename('x:/sd/df/fg/me.txt')
print dirname('x:/sd/df/fg/me.txt')
print join('s:/d/', '/g', '/tyty/fgfg')
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