Files
tools_previewer/util/JsonReader.cpp
T
2023-02-28 16:57:48 +08:00

56 lines
1.7 KiB
C++

/*
* Copyright (c) 2022 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.
*/
#include "JsonReader.h"
#include <fstream>
#include "PreviewerEngineLog.h"
#include "json.h"
using namespace std;
string JsonReader::ReadFile(const string path)
{
ifstream inFile(path);
if (!inFile.is_open()) {
ELOG("JsonReader: Open json file failed.");
return string();
}
string jsonStr((istreambuf_iterator<char>(inFile)), istreambuf_iterator<char>());
inFile.close();
return jsonStr;
}
Json::Value JsonReader::ParseJsonData(const string jsonStr)
{
Json::Value val;
Json::CharReaderBuilder builder;
Json::CharReader* charReader = builder.newCharReader();
if (charReader == nullptr) {
ELOG("JsonReader: CharReader memory allocation failed.");
return val;
}
std::unique_ptr<Json::CharReader> reader(charReader);
if (reader.get() == nullptr) {
ELOG("JsonReader: CharReader get null.");
return val;
}
string message; // NOLINT
if (!reader->parse(jsonStr.data(), jsonStr.data() + jsonStr.size(), &val, &message)) {
ELOG("JsonReader: Failed to parse the json data, errors: %s", message.c_str());
}
return val;
}