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使用 Python 修剪过长的目录和文件名

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此 Python 脚本接受一个目录路径，然后扫描其中的每个文件和子目录，查找超过指定长度的任何文件名或目录名。找到后，脚本将这些名称截断以适应所需长度，并附加省略号（如 ...）以指示截断。此脚本的美妙之处在于其可配置性和嵌入的安全功能。

***注意：使用此脚本会丢失信息（因为新文件名会更短，文件名其余部分中的任何重要信息将永远丢失）。***此外，它可能以其他方式丢失信息。即使我们已仔细测试，它仍可能以意想不到的方式破坏你的数据。使用

如何使用

脚本提供以下命令行选项：

FixLongFilenames_usage.txt
usage: FixLongFilenames.py [-h] [-n LENGTH] [--ellipsis ELLIPSIS] [--dry] directory

Shorten long filenames and directory names.

positional arguments:
    directory             The directory to process.

options:
    -h, --help            show this help message and exit
    -n LENGTH, --length LENGTH
                                                The maximum allowable length for directory or file names.
    --ellipsis ELLIPSIS   The ellipsis to use when shortening.
    --dry                 Dry run mode, only log what would be renamed without actual renaming.

源代码

FixLongFilenames.py
#!/usr/bin/env python3
import os
import argparse

def shorten_path(path, max_length, ellipsis, dry_run):
    if os.path.isdir(path):
        base_name = os.path.basename(path)
        if len(base_name) > max_length:
            new_name = base_name[:max_length] + ellipsis
            new_path = os.path.join(os.path.dirname(path), new_name)
            if not os.path.exists(new_path):
                if dry_run:
                    print(f"[DRY RUN] Directory would be renamed: {path} -> {new_name}")
                else:
                    os.rename(path, new_path)
                    print(f"Renamed directory: {path} -> {new_name}")
                return new_path
    else:
        base_name, ext = os.path.splitext(os.path.basename(path))
        if len(base_name) > max_length:
            new_name = base_name[:max_length] + ellipsis + ext
            new_path = os.path.join(os.path.dirname(path), new_name)
            if not os.path.exists(new_path):
                if dry_run:
                    print(f"[DRY RUN] File would be renamed: {path} -> {new_name}")
                else:
                    os.rename(path, new_path)
                    print(f"Renamed file: {path} -> {new_name}")
                return new_path
    return path

def iterate_and_shorten(directory, max_length, ellipsis, dry_run):
    for root, dirs, files in os.walk(directory, topdown=False):
        for dname in dirs:
            dpath = os.path.join(root, dname)
            shortened_path = shorten_path(dpath, max_length, ellipsis, dry_run)
            dirs[dirs.index(dname)] = os.path.basename(shortened_path)

        for fname in files:
            fpath = os.path.join(root, fname)
            shorten_path(fpath, max_length, ellipsis, dry_run)


if __name__ == "__main__":
    parser = argparse.ArgumentParser(description="Shorten long filenames and directory names.")
    parser.add_argument('directory', help="The directory to process.")
    parser.add_argument('-n', '--length', type=int, default=100, help="The maximum allowable length for directory or file names.")
    parser.add_argument('--ellipsis', default="...", help="The ellipsis to use when shortening.")
    parser.add_argument('--dry', action="store_true", help="Dry run mode, only log what would be renamed without actual renaming.")
    args = parser.parse_args()

    iterate_and_shorten(args.directory, args.length, args.ellipsis, args.dry)
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