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dir_util.py

"""distutils.dir_util

Utility functions for manipulating directories and directory trees."""

import functools
import itertools
import os
import pathlib

from . import file_util
from ._log import log
from .errors import DistutilsFileError, DistutilsInternalError

class SkipRepeatAbsolutePaths(set):
    """
    Cache for mkpath.

In addition to cheapening redundant calls, eliminates redundant
    "creating /foo/bar/baz" messages in dry-run mode.
    """

def __init__(self):
        SkipRepeatAbsolutePaths.instance = self

@classmethod
    def clear(cls):
        super(cls, cls.instance).clear()

def wrap(self, func):
        @functools.wraps(func)
        def wrapper(path, *args, **kwargs):
            if path.absolute() in self:
                return
            result = func(path, *args, **kwargs)
            self.add(path.absolute())
            return result

return wrapper

# Python 3.8 compatibility
wrapper = SkipRepeatAbsolutePaths().wrap

@functools.singledispatch
@wrapper
def mkpath(name: pathlib.Path, mode=0o777, verbose=True, dry_run=False) -> None:
    """Create a directory and any missing ancestor directories.

If the directory already exists (or if 'name' is the empty string, which
    means the current directory, which of course exists), then do nothing.
    Raise DistutilsFileError if unable to create some directory along the way
    (eg. some sub-path exists, but is a file rather than a directory).
    If 'verbose' is true, log the directory created.
    """
    if verbose and not name.is_dir():
        log.info("creating %s", name)

try:
        dry_run or name.mkdir(mode=mode, parents=True, exist_ok=True)
    except OSError as exc:
        raise DistutilsFileError(f"could not create '{name}': {exc.args[-1]}")

@mkpath.register
def _(name: str, *args, **kwargs):
    return mkpath(pathlib.Path(name), *args, **kwargs)

@mkpath.register
def _(name: None, *args, **kwargs):
    """
    Detect a common bug -- name is None.
    """
    raise DistutilsInternalError(f"mkpath: 'name' must be a string (got {name!r})")

def create_tree(base_dir, files, mode=0o777, verbose=True, dry_run=False):
    """Create all the empty directories under 'base_dir' needed to put 'files'
    there.

'base_dir' is just the name of a directory which doesn't necessarily
    exist yet; 'files' is a list of filenames to be interpreted relative to
    'base_dir'.  'base_dir' + the directory portion of every file in 'files'
    will be created if it doesn't already exist.  'mode', 'verbose' and
    'dry_run' flags are as for 'mkpath()'.
    """
    # First get the list of directories to create
    need_dir = set(os.path.join(base_dir, os.path.dirname(file)) for file in files)

# Now create them
    for dir in sorted(need_dir):
        mkpath(dir, mode, verbose=verbose, dry_run=dry_run)

def copy_tree(
    src,
    dst,
    preserve_mode=True,
    preserve_times=True,
    preserve_symlinks=False,
    update=False,
    verbose=True,
    dry_run=False,
):
    """Copy an entire directory tree 'src' to a new location 'dst'.

Both 'src' and 'dst' must be directory names.  If 'src' is not a
    directory, raise DistutilsFileError.  If 'dst' does not exist, it is
    created with 'mkpath()'.  The end result of the copy is that every
    file in 'src' is copied to 'dst', and directories under 'src' are
    recursively copied to 'dst'.  Return the list of files that were
    copied or might have been copied, using their output name.  The
    return value is unaffected by 'update' or 'dry_run': it is simply
    the list of all files under 'src', with the names changed to be
    under 'dst'.

'preserve_mode' and 'preserve_times' are the same as for
    'copy_file'; note that they only apply to regular files, not to
    directories.  If 'preserve_symlinks' is true, symlinks will be
    copied as symlinks (on platforms that support them!); otherwise
    (the default), the destination of the symlink will be copied.
    'update' and 'verbose' are the same as for 'copy_file'.
    """
    if not dry_run and not os.path.isdir(src):
        raise DistutilsFileError(f"cannot copy tree '{src}': not a directory")
    try:
        names = os.listdir(src)
    except OSError as e:
        if dry_run:
            names = []
        else:
            raise DistutilsFileError(f"error listing files in '{src}': {e.strerror}")

if not dry_run:
        mkpath(dst, verbose=verbose)

copy_one = functools.partial(
        _copy_one,
        src=src,
        dst=dst,
        preserve_symlinks=preserve_symlinks,
        verbose=verbose,
        dry_run=dry_run,
        preserve_mode=preserve_mode,
        preserve_times=preserve_times,
        update=update,
    )
    return list(itertools.chain.from_iterable(map(copy_one, names)))

def _copy_one(
    name,
    *,
    src,
    dst,
    preserve_symlinks,
    verbose,
    dry_run,
    preserve_mode,
    preserve_times,
    update,
):
    src_name = os.path.join(src, name)
    dst_name = os.path.join(dst, name)

if name.startswith('.nfs'):
        # skip NFS rename files
        return

if preserve_symlinks and os.path.islink(src_name):
        link_dest = os.readlink(src_name)
        if verbose >= 1:
            log.info("linking %s -> %s", dst_name, link_dest)
        if not dry_run:
            os.symlink(link_dest, dst_name)
        yield dst_name

elif os.path.isdir(src_name):
        yield from copy_tree(
            src_name,
            dst_name,
            preserve_mode,
            preserve_times,
            preserve_symlinks,
            update,
            verbose=verbose,
            dry_run=dry_run,
        )
    else:
        file_util.copy_file(
            src_name,
            dst_name,
            preserve_mode,
            preserve_times,
            update,
            verbose=verbose,
            dry_run=dry_run,
        )
        yield dst_name

def _build_cmdtuple(path, cmdtuples):
    """Helper for remove_tree()."""
    for f in os.listdir(path):
        real_f = os.path.join(path, f)
        if os.path.isdir(real_f) and not os.path.islink(real_f):
            _build_cmdtuple(real_f, cmdtuples)
        else:
            cmdtuples.append((os.remove, real_f))
    cmdtuples.append((os.rmdir, path))

def remove_tree(directory, verbose=True, dry_run=False):
    """Recursively remove an entire directory tree.

Any errors are ignored (apart from being reported to stdout if 'verbose'
    is true).
    """
    if verbose >= 1:
        log.info("removing '%s' (and everything under it)", directory)
    if dry_run:
        return
    cmdtuples = []
    _build_cmdtuple(directory, cmdtuples)
    for cmd in cmdtuples:
        try:
            cmd[0](cmd[1])
            # Clear the cache
            SkipRepeatAbsolutePaths.clear()
        except OSError as exc:
            log.warning("error removing %s: %s", directory, exc)

def ensure_relative(path):
    """Take the full path 'path', and make it a relative path.

This is useful to make 'path' the second argument to os.path.join().
    """
    drive, path = os.path.splitdrive(path)
    if path[0:1] == os.sep:
        path = drive + path[1:]
    return path

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	drwxr-xr-x	2025-01-11 06:02:30
..	dir	-	root/root	drwxr-xr-x	2025-01-11 06:02:30
__pycache__	dir	-	root/root	drwxr-xr-x	2025-01-11 06:02:30
command	dir	-	root/root	drwxr-xr-x	2025-01-11 06:02:30
compat	dir	-	root/root	drwxr-xr-x	2025-01-11 06:01:11
tests	dir	-	root/root	drwxr-xr-x	2025-01-11 06:01:11
__init__.py	text/x-script.python	359 B	root/root	-rw-r--r--	2024-12-18 10:23:15
_log.py	text/plain	42 B	root/root	-rw-r--r--	2024-12-18 10:23:15
_macos_compat.py	text/x-script.python	239 B	root/root	-rw-r--r--	2024-12-18 10:23:15
_modified.py	text/plain	2.39 KB	root/root	-rw-r--r--	2024-12-18 10:23:15
_msvccompiler.py	text/plain	20.31 KB	root/root	-rw-r--r--	2024-12-18 10:23:15
archive_util.py	text/plain	7.66 KB	root/root	-rw-r--r--	2024-12-18 10:23:15
ccompiler.py	text/plain	47.73 KB	root/root	-rw-r--r--	2024-12-18 10:23:15
cmd.py	text/plain	17.46 KB	root/root	-rw-r--r--	2024-12-18 10:23:15
core.py	text/plain	9.05 KB	root/root	-rw-r--r--	2024-12-18 10:23:15
cygwinccompiler.py	text/plain	11.61 KB	root/root	-rw-r--r--	2024-12-18 10:23:15
debug.py	text/plain	139 B	root/root	-rw-r--r--	2024-12-18 10:23:15
dep_util.py	text/x-script.python	349 B	root/root	-rw-r--r--	2024-12-18 10:23:15
dir_util.py	text/plain	7.07 KB	root/root	-rw-r--r--	2024-12-18 10:23:15
dist.py	text/plain	49.37 KB	root/root	-rw-r--r--	2024-12-18 10:23:15
errors.py	text/plain	3.25 KB	root/root	-rw-r--r--	2024-12-18 10:23:15
extension.py	text/plain	10.12 KB	root/root	-rw-r--r--	2024-12-18 10:23:15
fancy_getopt.py	text/plain	17.4 KB	root/root	-rw-r--r--	2024-12-18 10:23:15
file_util.py	text/plain	7.78 KB	root/root	-rw-r--r--	2024-12-18 10:23:15
filelist.py	text/plain	13.33 KB	root/root	-rw-r--r--	2024-12-18 10:23:15
log.py	text/plain	1.17 KB	root/root	-rw-r--r--	2024-12-18 10:23:15
spawn.py	text/plain	3.54 KB	root/root	-rw-r--r--	2024-12-18 10:23:15
sysconfig.py	text/plain	18.78 KB	root/root	-rw-r--r--	2024-12-18 10:23:15
text_file.py	text/plain	11.81 KB	root/root	-rw-r--r--	2024-12-18 10:23:15
unixccompiler.py	text/plain	15.08 KB	root/root	-rw-r--r--	2024-12-18 10:23:15
util.py	text/plain	17.24 KB	root/root	-rw-r--r--	2024-12-18 10:23:15
version.py	text/x-script.python	12.34 KB	root/root	-rw-r--r--	2024-12-18 10:23:15
versionpredicate.py	text/plain	5.08 KB	root/root	-rw-r--r--	2024-12-18 10:23:15
zosccompiler.py	text/plain	6.43 KB	root/root	-rw-r--r--	2024-12-18 10:23:15