1 /*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #ifndef PRINT_JSON_UTIL_H
17 #define PRINT_JSON_UTIL_H
18
19 #include <string>
20 #include <memory>
21 #include <json/json.h>
22 #include <print_log.h>
23
24 namespace OHOS::Print {
25
26 class PrintJsonUtil {
27 public:
28 static bool IsMember(const Json::Value &jsonObject, const std::string &key);
29 static bool Parse(const std::string &root, Json::Value &jsonObject);
30 static bool ParseFromStream(Json::IStream &ifs, Json::Value &jsonObject);
31 static std::string WriteString(const Json::Value &jsonObject);
32 static std::string WriteStringUTF8(const Json::Value &jsonObject);
33 };
34
35 /*
36 Json::Value 非object对象直接调用isMember会程序崩溃
37 */
IsMember(const Json::Value & jsonObject,const std::string & key)38 inline bool PrintJsonUtil::IsMember(const Json::Value &jsonObject, const std::string &key)
39 {
40 if (jsonObject.isObject() || jsonObject.isNull()) {
41 return jsonObject.isMember(key);
42 }
43 return false;
44 }
45
46 /*
47 string对象，不包含数组，或者对象格式，使用此方法转换
48 */
Parse(const std::string & root,Json::Value & jsonObject)49 inline bool PrintJsonUtil::Parse(const std::string &root, Json::Value &jsonObject)
50 {
51 Json::CharReaderBuilder rBuilder;
52 std::unique_ptr<Json::CharReader> reader(rBuilder.newCharReader());
53 JSONCPP_STRING err;
54 if (!reader->parse(root.c_str(), root.c_str() + root.length(), &jsonObject, &err)) {
55 PRINT_HILOGE("PrintJsonUtil string parse error! ErrorInfo: %{public}s", err.c_str());
56 return false;
57 }
58 return true;
59 }
60
61 /*
62 文件流转化json，使用此方法转换
63 */
ParseFromStream(Json::IStream & ifs,Json::Value & jsonObject)64 inline bool PrintJsonUtil::ParseFromStream(Json::IStream &ifs, Json::Value &jsonObject)
65 {
66 Json::CharReaderBuilder rBuilder;
67 JSONCPP_STRING err;
68 if (!parseFromStream(rBuilder, ifs, &jsonObject, &err)) {
69 PRINT_HILOGE("PrintJsonUtil stream parse error! ErrorInfo: %{public}s", err.c_str());
70 return false;
71 }
72 return true;
73 }
74
WriteString(const Json::Value & jsonObject)75 inline std::string PrintJsonUtil::WriteString(const Json::Value &jsonObject)
76 {
77 Json::StreamWriterBuilder wBuilder;
78 wBuilder["indentation"] = "";
79 return Json::writeString(wBuilder, jsonObject);
80 }
81
WriteStringUTF8(const Json::Value & jsonObject)82 inline std::string PrintJsonUtil::WriteStringUTF8(const Json::Value &jsonObject)
83 {
84 Json::StreamWriterBuilder wBuilder;
85 wBuilder["indentation"] = "";
86 wBuilder["emitUTF8"] = true;
87 return Json::writeString(wBuilder, jsonObject);
88 }
89 }
90
91 #endif // HARMONYOSDEV_PRINT_JSON_HELPER_H