给COCO数据集的json标签换行

//针对COCO标签只有单行，打开/修改非常慢的问题（虽然本程序跑起来也不快，但至少以后用Notepad++修改起来会快点）

#include <iostream>
#include <fstream>
#include <string>
#include <vector>

using namespace std;

int main(){
    ifstream src("原.json");
    ofstream dst("新.json");

    string getall;
    getline(src, getall);

    string space = "    ";
    size_t count_of_space = ;
    size_t n = getall.size();
    bool inmark = false;
    for (size_t i = ; i < n; ++i){
        char c = getall[i];
        if (c < )break;
        //printf("%c[%d/%d]\n", c, i, n);
        if (c == '\"'){
            inmark = !inmark;
        }
        if (inmark){
            dst << c;
            continue;
        }
        switch (c){
        case '[':
        case '{':
            count_of_space += ;
            dst << c << '\n';
            for (size_t j = ; j < count_of_space; ++j)dst << space;
            break;
        case ']':
            count_of_space -= ;
            if (count_of_space < )count_of_space = ;
            dst << '\n';
            for (size_t j = ; j < count_of_space; ++j)dst << space;
            dst << ']';
            if (i +  < n){
                if (getall[i + ] != ','&&getall[i + ] != ',')dst << '\n';
            }
            break;
        case '}':
            count_of_space -= ;
            if (count_of_space < )count_of_space = ;
            dst << '\n';
            for (size_t j = ; j < count_of_space; ++j)dst << space;
            dst << '}';
            if (i +  < n){
                if(getall[i + ] != ','&&getall[i + ] != ',')dst << '\n';
            }
            break;
        case ',':
            dst << ',';
        case '\n':
            dst << '\n';
            if (count_of_space < )count_of_space = ;
            for (size_t j = ; j < count_of_space; ++j)dst << space;
            break;
        default:
            dst << c;
            break;
        }
    }

    return ;
}