"""
Filename globbing utility. Mostly a copy of `glob` from Python 3.5.
Changes include:
* `yieldfrom` and PEP3102 `*` removed.
* Hidden files are not ignored. """
import fnmatch import os import re
__all__ = ["glob", "iglob", "escape"]
def glob(pathname, recursive=False): """Return a list of paths matching a pathname pattern.
The pattern may contain simple shell-style wildcards a la
fnmatch. However, unlike fnmatch, filenames starting with a
dot are special cases that are not matched by '*'and'?'
patterns.
If recursive istrue, the pattern '**' will match any files and
zero or more directories and subdirectories. """ return list(iglob(pathname, recursive=recursive))
def iglob(pathname, recursive=False): """Return an iterator which yields the paths matching a pathname pattern.
The pattern may contain simple shell-style wildcards a la
fnmatch. However, unlike fnmatch, filenames starting with a
dot are special cases that are not matched by '*'and'?'
patterns.
If recursive istrue, the pattern '**' will match any files and
zero or more directories and subdirectories. """
it = _iglob(pathname, recursive) if recursive and _isrecursive(pathname):
s = next(it) # skip empty string assertnot s return it
def _iglob(pathname, recursive):
dirname, basename = os.path.split(pathname)
glob_in_dir = glob2 if recursive and _isrecursive(basename) else glob1
ifnot has_magic(pathname): if basename: if os.path.lexists(pathname): yield pathname else: # Patterns ending with a slash should match only directories if os.path.isdir(dirname): yield pathname return
ifnot dirname: yieldfrom glob_in_dir(dirname, basename) return # `os.path.split()` returns the argument itself as a dirname if it is a # drive or UNC path. Prevent an infinite recursion if a drive or UNC path # contains magic characters (i.e. r'\\?\C:'). if dirname != pathname and has_magic(dirname):
dirs = _iglob(dirname, recursive) else:
dirs = [dirname] ifnot has_magic(basename):
glob_in_dir = glob0 for dirname in dirs: for name in glob_in_dir(dirname, basename): yield os.path.join(dirname, name)
# These 2 helper functions non-recursively glob inside a literal directory. # They return a list of basenames. `glob1` accepts a pattern while `glob0` # takes a literal basename (so it only has to check for its existence).
def glob0(dirname, basename): ifnot basename: # `os.path.split()` returns an empty basename for paths ending with a # directory separator. 'q*x/' should match only directories. if os.path.isdir(dirname): return [basename] else: if os.path.lexists(os.path.join(dirname, basename)): return [basename] return []
# This helper function recursively yields relative pathnames inside a literal # directory.
# Recursively yields relative pathnames inside a literal directory. def _rlistdir(dirname): ifnot dirname: if isinstance(dirname, bytes):
dirname = os.curdir.encode('ASCII') else:
dirname = os.curdir try:
names = os.listdir(dirname) except OSError: return for x in names: yield x
path = os.path.join(dirname, x) if dirname else x for y in _rlistdir(path): yield os.path.join(x, y)
def escape(pathname): """Escape all special characters.""" # Escaping is done by wrapping any of "*?[" between square brackets. # Metacharacters do not work in the drive part and shouldn't be escaped.
drive, pathname = os.path.splitdrive(pathname) if isinstance(pathname, bytes):
pathname = magic_check_bytes.sub(rb'[\1]', pathname) else:
pathname = magic_check.sub(r'[\1]', pathname) return drive + pathname
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