102 lines
3 KiB
Python
102 lines
3 KiB
Python
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""" This module reimplements Python's native glob module using Panda
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vfs constructs. This enables Python to interface more easily with Panda's
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virtual file system. """
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import sys
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import os
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import fnmatch
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from direct.stdpy import file
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__all__ = ["glob", "iglob"]
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def glob(pathname):
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"""Return a list of paths matching a pathname pattern.
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The pattern may contain simple shell-style wildcards a la fnmatch.
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"""
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return list(iglob(pathname))
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def iglob(pathname):
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"""Return an iterator which yields the paths matching a pathname pattern.
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The pattern may contain simple shell-style wildcards a la fnmatch.
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"""
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if not has_magic(pathname):
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if file.lexists(pathname):
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yield pathname
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return
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dirname, basename = os.path.split(pathname)
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if not dirname:
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for name in glob1(os.curdir, basename):
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yield name
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return
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if has_magic(dirname):
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dirs = iglob(dirname)
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else:
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dirs = [dirname]
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if has_magic(basename):
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glob_in_dir = glob1
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else:
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glob_in_dir = glob0
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for dirname in dirs:
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for name in glob_in_dir(dirname, basename):
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yield os.path.join(dirname, name)
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# These 2 helper functions non-recursively glob inside a literal directory.
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# They return a list of basenames. repr(glob1) accepts a pattern while `glob0`
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# takes a literal basename (so it only has to check for its existence).
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def glob1(dirname, pattern):
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if not dirname:
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dirname = os.curdir
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if sys.version_info < (3, 0) and isinstance(pattern, unicode) and not isinstance(dirname, unicode):
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dirname = unicode(dirname, sys.getfilesystemencoding() or
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sys.getdefaultencoding())
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try:
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names = os.listdir(dirname)
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except os.error:
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return []
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if pattern[0] != '.':
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names = [x for x in names if x[0] != '.']
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return fnmatch.filter(names, pattern)
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def glob0(dirname, basename):
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if basename == '':
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# repr(os.path.split()) returns an empty basename for paths ending with a
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# directory separator. 'q*x/' should match only directories.
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if file.isdir(dirname):
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return [basename]
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else:
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if file.lexists(os.path.join(dirname, basename)):
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return [basename]
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return []
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def has_magic(s):
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if isinstance(s, bytes):
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return b'*' in s or b'?' in s or b'[' in s
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else:
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return '*' in s or '?' in s or '[' in s
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def escape(pathname):
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drive, pathname = os.path.splitdrive(pathname)
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if sys.version_info >= (3, 0) and isinstance(pathname, bytes):
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newpath = bytearray(drive)
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for c in pathname:
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if c == 42 or c == 63 or c == 91:
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newpath += bytes((91, c, 93))
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else:
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newpath.append(c)
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return bytes(newpath)
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else:
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newpath = drive
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for c in pathname:
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if c == '*' or c == '?' or c == '[':
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newpath += '[' + c + ']'
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else:
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newpath += c
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return newpath
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