// MyJsonTest.cpp : 定义控制台应用程序的入口点。

//

#include "stdafx.h"

#include <fstream>

#include <cassert>

#include "json/json.h"

using namespace std;

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void test1() {

    Json::Value root;

    Json::FastWriter writer;

    Json::Value person;

    person["FileName"] = "test1";

    person["fileLength"] = ""; // 4G以内文件

    person.removeMember("fileLength");

    root.append(person);

    person["FileName"] = "test2";

    person["fileLength"] = ""; // 4G以内文件

    root.append(person);

    person["FileName"] = "test3";

    person["fileLength"] = ""; // 4G以内文件

    root.append(person);

    std::string json_file = writer.write(root);

    ofstream ofs;

    ofs.open("test1.json", ios::trunc);

    assert(ofs.is_open());

    ofs << json_file;

    ofs.close();

}

int test2() {

    Json::Reader pJsonParser;;

    string strJson = "{\"name\":\"tom\",\"sex\":\"男\",\"age\":\"24\",\"friends\":[{\"name\":\"chen\",\"sex\":\"男\"},{\"name\":\"li\",\"sex\":\"女\"}]}";

    Json::Value tempVal;

    if (!pJsonParser.parse(strJson, tempVal))

    {

        cout << "parse error" << endl;

        return -;

    }

    string name = tempVal["name"].asString();

    string sex = tempVal["sex"].asString();

    string age = tempVal["age"].asString();

    Json::Value friends = tempVal["friends"];

    for (int i = ; i < friends.size(); i++) {

        cout << friends[i]["name"].asString() << endl;

    }

    cout << "name = " << name << "    age = " << age << "    sex = " << sex  << endl;

    return ;

}

void test3() {

        Json::Value root;

        Json::Value arrayObj;

        Json::Value item;

        Json::FastWriter writer;

        for (int i = ; i<; i++)

        {

            item["key"] = i;

            arrayObj.append(item); //数组项添加

        }

        root["key1"] = "value1";

        root["key2"] = "value2";

        root["key3"] = 0x100;

        root["key4"] = true;

        root["key5"] = "中国人";

        item = root["key5"];

        root["array"] = arrayObj;

        std::cout << root.toStyledString();

        std::cout << writer.write(root);

}

void test4() {

    char* config_doc = "{\"encoding\" : \"UTF-8\",\"plug-ins\" : [\"python\",\"c++\",\"ruby\"],\"indent\" : { \"length\" : 3, \"use_space\" : true }}";

    Json::Value root;   // will contains the root value after parsing.

    Json::Reader reader;

    bool parsingSuccessful = reader.parse(config_doc, root);

    if (!parsingSuccessful)

    {

        // report to the user the failure and their locations in the document.

        std::cout << "Failed to parse configuration\n";

        return;

    }

    // Get the value of the member of root named 'encoding', return 'UTF-8' if there is no

    // such member.

    std::string encoding = root.get("encoding", "UTF-8").asString();

    // Get the value of the member of root named 'encoding', return a 'null' value if

    // there is no such member.

    const Json::Value plugins = root["plug-ins"];

    for (int index = ; index < plugins.size(); ++index)  // Iterates over the sequence elements.

        std::cout << plugins[index].asString() << std::endl;

    std::cout << root["indent"].get("length", ).asInt() << std::endl;

    std::cout << root["indent"].get("use_space", true).asBool() << std::endl;;

    // ...

    // At application shutdown to make the new configuration document:

    // Since Json::Value has implicit constructor for all value types, it is not

    // necessary to explicitly construct the Json::Value object:

    //root["encoding"] = getCurrentEncoding();

    //root["indent"]["length"] = getCurrentIndentLength();

    //root["indent"]["use_space"] = getCurrentIndentUseSpace();

    Json::StyledWriter writer;

    // Make a new JSON document for the configuration. Preserve original comments.

    std::string outputConfig = writer.write(root);

    // You can also use streams.  This will put the contents of any JSON

    // stream at a particular sub-value, if you'd like.

    //std::cin >> root["subtree"];

    // And you can write to a stream, using the StyledWriter automatically.

    std::cout << root;

}

void test5() {

    Json::Reader reader;

    Json::Value root;

    Json::StyledStreamWriter writer;

    std::string text = "{ \"first\": \"James\", \"last\": \"Bond\", \"nums\": [0, 0, 7] }";

    std::ofstream outFile;

    // Parse JSON and print errors if needed

    if (!reader.parse(text, root)) {

        std::cout << reader.getFormatedErrorMessages();

        exit();

    }

    else {

        // Read and modify the json data

        std::cout << "Size: " << root.size() << std::endl;

        std::cout << "Contains nums? " << root.isMember("nums") << std::endl;

        root["first"] = "Jimmy";

        root["middle"] = "Danger";

        // Write the output to a file

        outFile.open("output.json");

        writer.write(outFile, root);

        outFile.close();

    }

}

int main()

{

    test5();

    return ;

}