// Licensed to the Apache Software Foundation (ASF) under one// or more contributor license agreements. See the NOTICE file// distributed with this work for additional information// regarding copyright ownership. The ASF licenses this file// to you 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.// Date: 2017/11/04 17:13:18#ifndef PUBLIC_COMMON_POPEN_H#define PUBLIC_COMMON_POPEN_H#include <ostream>namespacebutil{// Read the stdout of child process executing `cmd'.// Returns the exit status(0-255) of cmd and all the output is stored in// |os|. -1 otherwise and errno is set appropriately.intread_command_output(std::ostream&os,constchar*cmd);}#endif //PUBLIC_COMMON_POPEN_H