Re: [Boost-users] [property_tree] Parsing JSON

Ok, thank you. I am however not familiar with Spirit. I was expected that thé parser works out of thé box. If you hAve a pièce of code it Will be really helpful Regards Olivier Envoyé de mon iPhone Le 29 déc. 2010 à 02:08, Brian Budge a écrit :

Hi -

I don't have the code in front of me, but we had to modify the grammar for the JSON parser in boost property_tree in order to read top-level groups. If you're familiar with boost spirit, I think it's not too much work.

Brian

On Mon, Dec 27, 2010 at 11:14 AM, Olivier Tournaire wrote: Hi all,

I am currently trying to parse a JSON file, but cannot figure how to achieve this task (see for instance http://ax.itunes.apple.com/WebObjects/MZStoreServices.woa/wa/wsSearch?term=sudoku&entity=software&limit=1). Here is a piece of code:

#ifndef ITUNES_JSON_STRUCTURE_HPP #define ITUNES_JSON_STRUCTURE_HPP #include #include <string> class itunes_json_structure { public: void load(const std::string &filename); boost::property_tree::ptree m_ptree; }; #endif // ITUNES_JASON_STRUCTURE_HPP

#include "itunes_jason_structure.hpp"

#include

#include <iostream>

using namespace std;

void itunes_json_structure::load(const string &filename)

{

using boost::property_tree::ptree;

try

{

// Load the JSON file into the property tree. If reading fails

// (cannot open file, parse error), an exception is thrown.

read_json(filename, m_ptree);

cout << "resultCount = " << m_ptree.get<string>("resultCount") << endl;

ptree all_results = m_ptree.get_child("results");

// HERE!!! How can I read the content of the "results" node????

}

catch(exception &e)

{

throw e;

}

}

I am unable to read the content of the "results" node. Could you please give me some help?

Regards,

Olivier

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