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#!/usr/bin/env python
"""
all your lint are belong to us
"""
import os
import subprocess
import sys
def run(cmd, file):
"Exec a linter for a file."
global ERRORS # pylint: disable=global-statement
args = {
"ormolu": ["--mode", "check"],
"hlint": [],
"black": ["--quiet", "--check"],
"pylint": [],
}
# pylint: disable=subprocess-run-check
ret = subprocess.run([cmd, *args[cmd], file], stdout=subprocess.PIPE)
if ret.returncode != 0:
ERRORS += 1 # pylint: disable=undefined-variable
msg = ret.stdout.decode("utf-8").strip()
print(f"lint error: {cmd} on {file}")
if msg:
print(msg)
def changed_files():
"Return a list of changed files according to git."
return (
subprocess.check_output(["git", "diff", "--cached", "--name-only"])
.decode("utf-8")
.strip()
)
def group_files(files, extensions):
"""Given a list of files and list of extensions, return a dict of:
{ext: [files]}
"""
root = os.getenv("BIZ_ROOT")
ret = {k: [] for k in extensions}
for ext in extensions:
for file in files:
if file.endswith(ext):
ret[ext].append(os.path.join(root, file))
return ret
if __name__ == "__main__":
ERRORS = 0
if "-h" in sys.argv:
print(f"usage: {os.path.basename(__file__)} <files...>")
print("if no files given, lint files staged in git")
sys.exit(0)
elif len(sys.argv) == 1:
FILES = group_files(changed_files(), [".hs", ".py"])
else:
FILES = group_files(sys.argv[1:], [".hs", ".py"])
for hs in FILES[".hs"]:
print(f"lint: {hs}")
run("ormolu", hs)
run("hlint", hs)
for py in FILES[".py"]:
print(f"lint: {py}")
run("black", py)
run("pylint", py)
run("black", __file__)
run("pylint", __file__)
sys.exit(ERRORS)
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