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Copy pathbatch_file_rename.py
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100 lines (82 loc) · 3.16 KB
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import argparse
import sys
from pathlib import Path
def batch_rename(work_dir, old_ext, new_ext, dry_run=False):
"""
Batch rename files in a directory from one extension to another.
Args:
work_dir (str): Path to the target directory.
old_ext (str): Extension to find (e.g., '.txt' or '.tar.gz').
new_ext (str): New extension to apply (e.g., '.md').
dry_run (bool): If True, preview changes without applying.
"""
work_path = Path(work_dir)
if not work_path.is_dir():
print(f"Error: {work_dir} is not a valid directory.", file=sys.stderr)
return
# Normalize extensions for library safety
if not old_ext.startswith("."):
old_ext = "." + old_ext
if not new_ext.startswith("."):
new_ext = "." + new_ext
print(f"[*] Scanning {work_dir} for files with extension '{old_ext}'...")
found_files = list(work_path.glob(f"*{old_ext}"))
if not found_files:
print(f"[!] No files found with extension '{old_ext}'.")
return
for file_path in found_files:
# Handle compound extensions by checking ends-with
if file_path.name.endswith(old_ext):
new_name = file_path.name[:-len(old_ext)] + new_ext
new_file_path = file_path.with_name(new_name)
else:
new_file_path = file_path.with_suffix(new_ext)
if new_file_path.exists():
print(f"[!] Skip: {new_file_path.name} already exists. Cannot rename {file_path.name}.", file=sys.stderr)
continue
if dry_run:
print(f"[DRY-RUN] Would rename: {file_path.name} -> {new_file_path.name}")
else:
try:
file_path.rename(new_file_path)
print(f"[+] Renamed: {file_path.name} -> {new_file_path.name}")
except OSError as e:
print(f"[!] Error renaming {file_path.name}: {e}", file=sys.stderr)
continue
if not dry_run:
print("[*] Batch rename completed.")
def get_parser():
"""
Create and return the argument parser for the CLI.
"""
parser = argparse.ArgumentParser(
description="Change extension of files in a working directory"
)
parser.add_argument(
"work_dir",
help="The directory where to change extension",
)
parser.add_argument(
"old_ext", help="Old extension (e.g., .txt or txt)"
)
parser.add_argument(
"new_ext", help="New extension (e.g., .md or md)"
)
parser.add_argument(
"--dry-run",
action="store_true",
help="Preview changes without applying them",
)
return parser
def main():
"""
This will be called if the script is directly invoked.
"""
parser = get_parser()
args = parser.parse_args()
work_dir = args.work_dir
old_ext = args.old_ext if args.old_ext.startswith(".") else "." + args.old_ext
new_ext = args.new_ext if args.new_ext.startswith(".") else "." + args.new_ext
batch_rename(work_dir, old_ext, new_ext, dry_run=args.dry_run)
if __name__ == "__main__":
main()