Find files with non-ASCII characters in filenames in Windows XP

Question

Is there any easy way to find all files in a particular directory that have any non-ASCII (ie. Unicode) characters in the filename? I'm running Windows XP x64 SP2, NTFS filesystem.

Answer 1

I ended up writing a Python script for this. Posting it in case it helps anyone. Feel free to move to StackOverflow.

import sys, os


def main(argv):
    if len(argv) != 2:
        raise Exception('Syntax: FindUnicodeFiles.py <directory>')

    startdir = argv[1]
    if not os.path.isdir(startdir):
        raise Exception('"%s" is not a directory' % startdir)

    for r in recurse_breadth_first(startdir, is_unicode_filename):
        print(r)


def recurse_breadth_first(dirpath, test_func):
    namesandpaths = [(f, os.path.join(dirpath, f)) for f in os.listdir(dirpath)]

    for (name, path) in namesandpaths:
        if test_func(name):
            yield path

    for (_, path) in namesandpaths:
        if os.path.isdir(path):
            for r in recurse_breadth_first(path, test_func):
                yield r


def is_unicode_filename(filename):
    return any(ord(c) >= 0x7F for c in filename)


if __name__ == '__main__':
    main(sys.argv)

Answer 2

Here's a method using Powershell:

gci -recurse "<directory_name>" | where {$_.Name -match "[^\u0000-\u007F]"}