python/moz/l10n/formats/plain_json/serialize.py (50 lines of code) (raw):
# Copyright Mozilla Foundation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import annotations
from collections import defaultdict
from collections.abc import Iterator
from json import dumps
from typing import Any
from ...model import Entry, Message, PatternMessage, Resource
def plain_json_serialize(
resource: Resource[str] | Resource[Message],
trim_comments: bool = False,
) -> Iterator[str]:
"""
Serialize a resource as a nested JSON object.
Comments and metadata are not supported.
Yields the entire JSON result as a single string.
"""
def check(comment: str | None, meta: Any) -> None:
if trim_comments:
return
if comment:
raise ValueError("Resource and section comments are not supported")
if meta:
raise ValueError("Metadata is not supported")
def ddict() -> dict[str, Any]:
return defaultdict(ddict)
check(resource.comment, resource.meta)
root = ddict()
for section in resource.sections:
check(section.comment, section.meta)
section_parent = root
for part in section.id:
section_parent = section_parent[part]
for entry in section.entries:
if isinstance(entry, Entry):
check(entry.comment, entry.meta)
if not entry.id:
raise ValueError(f"Unsupported empty identifier in {section.id}")
msg = entry.value
if isinstance(msg, str):
value = msg
elif isinstance(msg, PatternMessage) and all(
isinstance(p, str) for p in msg.pattern
):
value = "".join(msg.pattern) # type: ignore[arg-type]
else:
raise ValueError(
f"Unsupported message for {section.id + entry.id}: {msg}"
)
parent = section_parent
for part in entry.id[:-1]:
parent = parent[part]
parent[entry.id[-1]] = value
else:
check(entry.comment, None)
yield dumps(root, indent=2, ensure_ascii=False)
yield "\n"