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# Copyright (C) 2018 The Android Open Source Project
#
# 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.
"""Tool functions to deal with files."""
import datetime
import os
from pathlib import Path
# pylint: disable=import-error
from google.protobuf import text_format # type: ignore
# pylint: disable=import-error
import metadata_pb2 # type: ignore
ANDROID_TOP = Path(os.environ.get('ANDROID_BUILD_TOP', os.getcwd()))
EXTERNAL_PATH = ANDROID_TOP / 'external'
METADATA_FILENAME = 'METADATA'
def get_absolute_project_path(proj_path: Path) -> Path:
"""Gets absolute path of a project.
Path resolution starts from external/.
"""
return EXTERNAL_PATH / proj_path
def get_metadata_path(proj_path: Path) -> Path:
"""Gets the absolute path of METADATA for a project."""
return get_absolute_project_path(proj_path) / METADATA_FILENAME
def get_relative_project_path(proj_path: Path) -> Path:
"""Gets the relative path of a project starting from external/."""
return get_absolute_project_path(proj_path).relative_to(EXTERNAL_PATH)
def read_metadata(proj_path: Path) -> metadata_pb2.MetaData:
"""Reads and parses METADATA file for a project.
Args:
proj_path: Path to the project.
Returns:
Parsed MetaData proto.
Raises:
text_format.ParseError: Occurred when the METADATA file is invalid.
FileNotFoundError: Occurred when METADATA file is not found.
"""
with get_metadata_path(proj_path).open('r') as metadata_file:
metadata = metadata_file.read()
return text_format.Parse(metadata, metadata_pb2.MetaData())
def write_metadata(proj_path: Path, metadata: metadata_pb2.MetaData, keep_date: bool) -> None:
"""Writes updated METADATA file for a project.
This function updates last_upgrade_date in metadata and write to the project
directory.
Args:
proj_path: Path to the project.
metadata: The MetaData proto to write.
keep_date: Do not change date.
"""
if not keep_date:
date = metadata.third_party.last_upgrade_date
now = datetime.datetime.now()
date.year = now.year
date.month = now.month
date.day = now.day
text_metadata = text_format.MessageToString(metadata)
with get_metadata_path(proj_path).open('w') as metadata_file:
metadata_file.write(text_metadata)
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