niobe/build/lite/utils.py

115 lines
3.3 KiB
Python
Executable File

#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright (c) 2020 Huawei Device Co., Ltd.
# 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.
#
import os
import collections
import subprocess
import shutil
import sys
import json
def encode(data, encoding='utf-8'):
if sys.version_info.major == 2:
return data.encode(encoding)
return data
def decode(data, encoding='utf-8'):
if sys.version_info.major == 2:
return data.decode(encoding)
return data
def remove_path(path):
if os.path.exists(path):
shutil.rmtree(path)
# Read json file data
def read_json_file(input_file):
if not os.path.exists(input_file):
print('file [{}] no exist.'.format(input_file))
return None
data = None
with open(input_file, 'rb') as input_f:
data = json.load(input_f)
return data
def exec_command(cmd, log_path='out/build.log', **kwargs):
with open(log_path, 'at', encoding='utf-8') as log_file:
process = subprocess.Popen(cmd,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
encoding='utf-8',
**kwargs)
for line in iter(process.stdout.readline, ''):
sys.stdout.write(line)
log_file.write(line)
process.wait()
ret_code = process.returncode
if ret_code != 0:
with open(log_path, 'at', encoding='utf-8') as log_file:
for line in iter(process.stderr.readline, ''):
sys.stdout.write(line)
log_file.write(line)
print('you can check build log in {}'.format(log_path))
raise Exception("{} failed, return code is {}".format(cmd, ret_code))
def check_output(cmd, **kwargs):
try:
ret = subprocess.check_output(cmd,
stderr=subprocess.STDOUT,
universal_newlines=True,
**kwargs)
except subprocess.CalledProcessError as e:
ret = e.output
raise Exception("{} failed, failed log is {}".format(cmd, ret))
return ret
def makedirs(path, exist_ok=True):
try:
os.makedirs(path)
except OSError:
if not os.path.isdir(path):
raise Exception("{} makedirs failed".format(path))
if not exist_ok:
raise Exception("{} exists, makedirs failed".format(path))
class CallbackDict(object):
handlers = None
def __init__(self):
self.handlers = collections.defaultdict(list)
def register(self, event, callback):
self.handlers[event].append(callback)
def excute(self, event, **kwargs):
if event not in self.handlers:
raise Exception('{} not found in callback dict'.format(event))
for handler in self.handlers.get(event, []):
handler(**kwargs)