anki/ftl/format.py

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2020-11-22 06:30:59 +01:00
#!/usr/bin/env python3
# -*- coding: UTF-8 -*-
"""
Parse and re-serialize ftl files to get them in a consistent form.
"""
import os
import json
import glob
import sys
from typing import List
from fluent.syntax import parse, serialize
from fluent.syntax.ast import Junk
def check_file(path: str, fix: bool) -> bool:
"True if file is ok."
orig_text = open(path).read()
obj = parse(orig_text, with_spans=False)
# make sure there's no junk
for ent in obj.body:
if isinstance(ent, Junk):
raise Exception(f"file had junk! {path} {ent}")
# serialize
new_text = serialize(obj)
# make sure serializing did not introduce new junk
obj = parse(new_text, with_spans=False)
for ent in obj.body:
if isinstance(ent, Junk):
raise Exception(f"file introduced junk! {path} {ent}")
if new_text == orig_text:
return True
if fix:
print(f"Fixing {path}")
open(path, "w", newline="\n", encoding="utf8").write(new_text)
return True
else:
print(f"Bad formatting in {path}")
return False
def check_files(files: List[str], fix: bool) -> bool:
"True if files ok."
found_bad = False
for path in files:
ok = check_file(path, fix)
if not ok:
found_bad = True
return True
if __name__ == "__main__":
template_root = os.environ["BUILD_WORKSPACE_DIRECTORY"]
template_files = glob.glob(
os.path.join(template_root, "ftl", "*", "*.ftl"), recursive=True
)
check_files(template_files, fix=True)