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"""Wrapper for readdir which grabs file type from d_type."""
import errno
import os
from stat import (
S_IFBLK,
S_IFCHR,
S_IFDIR,
S_IFIFO,
S_IFLNK,
S_IFMT,
S_IFREG,
S_IFSOCK,
S_ISDIR,
S_ISREG,
)
from ..mappings import ProtectedDict
# we can still use the cpy pjoin here, just need to do something about the
# import cycle.
pjoin = os.path.join
def stat_swallow_enoent(path, check, default=False, stat=os.stat):
try:
return check(stat(path).st_mode)
except OSError as oe:
if oe.errno == errno.ENOENT:
return default
raise
def listdir_dirs(path, followSymlinks=True):
"""
Return a list of all subdirectories within a directory
:param path: directory to scan
:param followSymlinks: this controls if symlinks are resolved.
If True and the symlink resolves to a directory, it is returned,
else if False it isn't returned.
:return: list of directories within `path`
"""
scheck = S_ISDIR
pjf = pjoin
lstat = os.lstat
if followSymlinks:
return [
x for x in os.listdir(path) if stat_swallow_enoent(pjf(path, x), scheck)
]
lstat = os.lstat
return [x for x in os.listdir(path) if scheck(lstat(pjf(path, x)).st_mode)]
def listdir_files(path, followSymlinks=True):
"""
Return a list of all files within a directory
:param path: directory to scan
:param followSymlinks: this controls if symlinks are resolved.
If True and the symlink resolves to a file, it is returned,
else if False it isn't returned.
:return: list of files within `path`
"""
scheck = S_ISREG
pjf = pjoin
if followSymlinks:
return [
x for x in os.listdir(path) if stat_swallow_enoent(pjf(path, x), scheck)
]
lstat = os.lstat
return [x for x in os.listdir(path) if scheck(lstat(pjf(path, x)).st_mode)]
# we store this outside the function to ensure that
# the strings used are reused, thus avoiding unneeded
# allocations
d_type_mapping = ProtectedDict(
{
S_IFREG: "file",
S_IFDIR: "directory",
S_IFLNK: "symlink",
S_IFCHR: "chardev",
S_IFBLK: "block",
S_IFSOCK: "socket",
S_IFIFO: "fifo",
}
)
def readdir(path):
"""
Given a directory, return a list of (filename, filetype)
see :py:data:`d_type_mappings` for the translation used
:param path: path of a directory to scan
:return: list of (filename, filetype)
"""
return [
(name, d_type_mapping[S_IFMT(os.lstat(pjoin(path, name)).st_mode)])
for name in os.listdir(path)
]
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