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sb/path: Update the path module to the latest from master.
- Fixes Windows path issues - Fixes infinite loop with a read-only path. Close #3394
This commit is contained in:
Chris Johns
parent
9f4ed7e316
commit
62537bc0ac
@ -34,6 +34,7 @@ import string
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import error
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windows = os.name == 'nt'
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win_maxpath = 254
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def host(path):
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if path is not None:
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@ -46,13 +47,21 @@ def host(path):
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path[1] in string.ascii_uppercase):
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path = '%s:%s' % (path[1], path[2:])
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path = path.replace('/', '\\')
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if not path.startswith('\\\\?\\') and len(path) > 254:
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path = '\\\\?\\' + path
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if len(path) > win_maxpath:
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if path.startswith('\\\\?\\'):
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path = path[4:]
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path = u'\\'.join([u'\\\\?', path])
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return path
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def is_abspath(path):
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if path is not None and len(path) > 0:
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return '/' == path[0]
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return False
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def shell(path):
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if path is not None:
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if windows:
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path = path.encode('ascii', 'ignore')
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if path.startswith('\\\\?\\'):
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path = path[4:]
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if len(path) > 1 and path[1] == ':':
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@ -63,9 +72,11 @@ def shell(path):
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return path
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def basename(path):
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return shell(os.path.basename(path))
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path = shell(path)
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return shell(os.path.basename(host(path)))
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def dirname(path):
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path = shell(path)
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return shell(os.path.dirname(path))
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def join(path, *args):
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@ -78,42 +89,68 @@ def join(path, *args):
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return shell(path)
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def abspath(path):
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path = shell(path)
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return shell(os.path.abspath(host(path)))
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def relpath(path, start = None):
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path = shell(path)
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if start is None:
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path = os.path.relpath(host(path))
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else:
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path = os.path.relpath(host(path), start)
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return shell(path)
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def splitext(path):
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path = shell(path)
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root, ext = os.path.splitext(host(path))
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return shell(root), ext
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def listdir(path):
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path = shell(path)
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hp = host(path)
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if not os.path.exists(hp):
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return []
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return os.listdir(hp)
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def exists(paths):
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def _exists(p):
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if not is_abspath(p):
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p = shell(join(os.getcwd(), host(p)))
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return basename(p) in ['.'] + listdir(dirname(p))
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if type(paths) == list:
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results = []
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for p in paths:
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results += [os.path.exists(host(p))]
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results += [_exists(shell(p))]
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return results
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return os.path.exists(host(paths))
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return _exists(shell(paths))
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def isdir(path):
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path = shell(path)
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return os.path.isdir(host(path))
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def isfile(path):
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path = shell(path)
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return os.path.isfile(host(path))
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def isabspath(path):
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path = shell(path)
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return path[0] == '/'
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def iswritable(path):
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path = shell(path)
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return os.access(host(path), os.W_OK)
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def ispathwritable(path):
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path = host(path)
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while len(path) != 0:
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if os.path.exists(path):
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path = shell(path)
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while len(path) > 1:
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if exists(path):
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return iswritable(path)
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path = os.path.dirname(path)
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path = dirname(path)
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return False
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def mkdir(path):
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path = host(path)
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path = shell(path)
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if exists(path):
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if not isdir(path):
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raise error.general('path exists and is not a directory: %s' % (path))
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@ -135,41 +172,60 @@ def mkdir(path):
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except OSError as err:
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raise error.general('cannot make directory: %s' % (path))
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def chdir(path):
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path = shell(path)
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os.chdir(host(path))
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def removeall(path):
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#
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# Perform the removal of the directory tree manually so we can
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# make sure on Windows the files and correctly encoded to avoid
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# the size limit.
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# make sure on Windows the files are correctly encoded to avoid
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# the file name size limit. On Windows the os.walk fails once we
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# get to the max path length on Windows.
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#
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path = host(path)
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for root, dirs, files in os.walk(path, topdown = False):
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for name in files:
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file = host(os.path.join(root, name))
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if not os.path.islink(file) and not os.access(file, os.W_OK):
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os.chmod(file, stat.S_IWUSR)
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os.unlink(file)
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for name in dirs:
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dir = host(os.path.join(root, name))
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if os.path.islink(dir):
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os.unlink(dir)
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def _isdir(path):
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hpath = host(path)
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return os.path.isdir(hpath) and not os.path.islink(hpath)
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def _remove_node(path):
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hpath = host(path)
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if not os.path.islink(hpath) and not os.access(hpath, os.W_OK):
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os.chmod(hpath, stat.S_IWUSR)
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if _isdir(path):
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os.rmdir(hpath)
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else:
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os.unlink(hpath)
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def _remove(path):
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dirs = []
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for name in listdir(path):
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path_ = join(path, name)
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hname = host(path_)
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if _isdir(path_):
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dirs += [name]
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else:
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if not os.access(dir, os.W_OK):
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os.chmod(dir, stat.S_IWUSR)
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os.rmdir(dir)
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if not os.path.islink(path) and not os.access(path, os.W_OK):
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os.chmod(path, stat.S_IWUSR)
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if os.path.islink(path):
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os.unlink(path)
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else:
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os.rmdir(path)
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_remove_node(path_)
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for name in dirs:
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dir = join(path, name)
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_remove(dir)
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_remove_node(dir)
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path = shell(path)
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hpath = host(path)
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if os.path.exists(hpath):
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_remove(path)
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_remove_node(path)
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def expand(name, paths):
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l = []
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for p in paths:
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l += [join(p, name)]
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l += [join(shell(p), name)]
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return l
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def copy(src, dst):
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src = shell(src)
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dst = shell(dst)
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hsrc = host(src)
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hdst = host(dst)
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try:
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@ -179,7 +235,7 @@ def copy(src, dst):
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if WindowsError is not None and isinstance(why, WindowsError):
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pass
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else:
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raise error.general('copying tree: %s -> %s: %s' % (hsrc, hdst, str(why)))
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raise error.general('copying tree (1): %s -> %s: %s' % (hsrc, hdst, str(why)))
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def copy_tree(src, dst):
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trace = False
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@ -187,17 +243,17 @@ def copy_tree(src, dst):
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hsrc = host(src)
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hdst = host(dst)
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if os.path.exists(hsrc):
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names = os.listdir(hsrc)
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if exists(src):
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names = listdir(src)
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else:
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names = []
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if trace:
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print('path.copy_tree:')
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print(' src: %s' % (src))
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print(' hsrc: %s' % (hsrc))
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print(' dst: %s' % (dst))
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print(' hdst: %s' % (hdst))
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print(' src: "%s"' % (src))
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print(' hsrc: "%s"' % (hsrc))
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print(' dst: "%s"' % (dst))
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print(' hdst: "%s"' % (hdst))
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print(' names: %r' % (names))
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if not os.path.isdir(hdst):
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@ -215,7 +271,7 @@ def copy_tree(src, dst):
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try:
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if os.path.islink(srcname):
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linkto = os.readlink(srcname)
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if os.path.exists(dstname):
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if exists(shell(dstname)):
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if os.path.islink(dstname):
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dstlinkto = os.readlink(dstname)
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if linkto != dstlinkto:
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@ -231,12 +287,13 @@ def copy_tree(src, dst):
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elif os.path.isdir(srcname):
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copy_tree(srcname, dstname)
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else:
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shutil.copy2(host(srcname), host(dstname))
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shutil.copyfile(host(srcname), host(dstname))
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shutil.copystat(host(srcname), host(dstname))
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except shutil.Error as err:
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raise error.general('copying tree: %s -> %s: %s' % \
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raise error.general('copying tree (2): %s -> %s: %s' % \
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(hsrc, hdst, str(err)))
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except EnvironmentError as why:
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raise error.general('copying tree: %s -> %s: %s' % \
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raise error.general('copying tree (3): %s -> %s: %s' % \
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(srcname, dstname, str(why)))
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try:
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shutil.copystat(hsrc, hdst)
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@ -245,7 +302,7 @@ def copy_tree(src, dst):
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if WindowsError is not None and isinstance(why, WindowsError):
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pass
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else:
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raise error.general('copying tree: %s -> %s: %s' % (hsrc, hdst, str(why)))
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raise error.general('copying tree (4): %s -> %s: %s' % (hsrc, hdst, str(why)))
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if __name__ == '__main__':
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print(host('/a/b/c/d-e-f'))
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