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ohmyzsh/tools/alias_collision/check_alias_collision.py
2024-02-19 12:54:59 +01:00

102 lines
2.5 KiB
Python

"""Check for alias collisions within the codebase"""
from argparse import ArgumentDefaultsHelpFormatter, ArgumentParser
from pathlib import Path
from dataclasses import dataclass
import itertools
import re
ERROR_MESSAGE_TEMPLATE = (
"Alias `%s` defined in `%s` already exists as alias `%s` in `%s`."
)
def dir_path(path_string: str) -> Path:
if Path(path_string).is_dir():
return Path(path_string)
else:
raise NotADirectoryError(path_string)
def parse_arguments():
parser = ArgumentParser(
description=__doc__,
formatter_class=ArgumentDefaultsHelpFormatter,
)
parser.add_argument(
"folder",
type=dir_path,
help="Folder to check",
)
return parser.parse_args()
@dataclass(frozen=True)
class Alias:
alias: str
value: str
module: Path
@dataclass(frozen=True)
class Collision:
existing_alias: Alias
new_alias: Alias
def find_aliases_in_file(file: Path) -> list[Alias]:
matches = re.findall(r"^alias (.*)='(.*)'", file.read_text(), re.M)
return [Alias(match[0], match[1], file) for match in matches]
def find_all_aliases(path: Path) -> list:
files = list(path.rglob("*.zsh"))
aliases = [find_aliases_in_file(file) for file in files]
return list(itertools.chain(*aliases))
def check_for_duplicates(aliases: list[Alias]) -> list[Collision]:
elements = {}
collisions = []
for alias in aliases:
if alias.alias in elements:
existing = elements[alias.alias]
collisions.append(Collision(existing, alias))
else:
elements[alias.alias] = alias
return collisions
def print_collisions(collisions: dict[Alias, Alias]) -> None:
if collisions:
print(f"Found {len(collisions)} alias collisions:\n")
for collision in collisions:
print(
ERROR_MESSAGE_TEMPLATE
% (
f"{collision.new_alias.alias}={collision.new_alias.value}",
collision.new_alias.module.name,
f"{collision.existing_alias.alias}={collision.existing_alias.value}",
collision.existing_alias.module.name,
)
)
print("\nConsider renaming your aliases.")
else:
print("Found no collisions")
def main():
"""main"""
args = parse_arguments()
aliases = find_all_aliases(args.folder)
collisions = check_for_duplicates(aliases)
print_collisions(collisions)
if collisions:
exit(-1)
if __name__ == "__main__":
main()