utils.h

/*
 * Copyright (C) 2017 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.
 */

#ifndef ANDROID_VINTF_UTILS_H
#define ANDROID_VINTF_UTILS_H

#include <fstream>
#include <iostream>
#include <sstream>

#include <android-base/logging.h>
#include <utils/Errors.h>

#include "parse_xml.h"

namespace android {
namespace vintf {
namespace details {

template<typename T>
status_t fetchAllInformation(const std::string &path,
        const XmlConverter<T> &converter, T *outObject) {
    std::ifstream in;
    in.open(path);
    if (!in.is_open()) {
        LOG(WARNING) << "Cannot open " << path;
        return INVALID_OPERATION;
    }
    std::stringstream ss;
    ss << in.rdbuf();
    bool success = converter(outObject, ss.str());
    if (!success) {
        LOG(ERROR) << "Illformed file: " << path << ": "
                   << converter.lastError();
        return BAD_VALUE;
    }
    return OK;
}

}  // namespace details
}  // namespace vintf
}  // namespace android



#endif