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 <brian.budge@gmail.com> 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 <olitour@gmail.com> 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 <boost/property_tree/ptree.hpp>

#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 <boost/property_tree/json_parser.hpp>

#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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