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/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2011 Tatsuhiro Tsujikawa
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
/* copyright --> */
#ifndef D_JSON_H
#define D_JSON_H
#include "common.h"
#include "ValueBase.h"
namespace aria2 {
namespace json {
std::string jsonEscape(const std::string& s);
template<typename OutputStream>
OutputStream& encode(OutputStream& out, const ValueBase* vlb)
{
class JsonValueBaseVisitor : public ValueBaseVisitor {
public:
JsonValueBaseVisitor(OutputStream& out):out_(out) {}
virtual void visit(const String& string) CXX11_OVERRIDE
{
encodeString(string.s());
}
virtual void visit(const Integer& integer) CXX11_OVERRIDE
{
out_ << integer.i();
}
virtual void visit(const Bool& boolValue) CXX11_OVERRIDE
{
out_ << (boolValue.val() ? "true" : "false");
}
virtual void visit(const Null& nullValue) CXX11_OVERRIDE
{
out_ << "null";
}
virtual void visit(const List& list) CXX11_OVERRIDE
{
out_ << "[";
if(!list.empty()) {
auto i = list.begin();
(*i)->accept(*this);
++i;
for(auto eoi = list.end(); i != eoi; ++i){
out_ << ",";
(*i)->accept(*this);
}
}
out_ << "]";
}
virtual void visit(const Dict& dict) CXX11_OVERRIDE
{
out_ << "{";
if(!dict.empty()) {
auto i = dict.begin();
encodeString((*i).first);
out_ << ":";
(*i).second->accept(*this);
++i;
for(auto eoi = dict.end(); i != eoi; ++i){
out_ << ",";
encodeString((*i).first);
out_ << ":";
(*i).second->accept(*this);
}
}
out_ << "}";
}
private:
void encodeString(const std::string& s)
{
out_ << "\"" << jsonEscape(s) << "\"";
}
OutputStream& out_;
};
JsonValueBaseVisitor visitor(out);
vlb->accept(visitor);
return out;
}
// Serializes JSON object or array.
std::string encode(const ValueBase* json);
struct JsonGetParam {
std::string request;
std::string callback;
JsonGetParam(const std::string& request, const std::string& callback);
};
// Decodes JSON-RPC request from GET query parameter query. query must
// starts with "?". This function identifies method name, id,
// parameters and jsonp callback. For method name, it searches
// "method" query parameter. For id, it searches "id" query
// parameter. The id is always treated as string. For parameters, it
// searches "params" query parameter. The params is Base64 encoded
// JSON string normally associated "params" key in POST request. For
// jsonp callback, it searches "jsoncallback". For example, calling
// remote method, sum([1,2,3]) with id=300 looks like this:
// ?method=sum&id=300¶ms=WzEsMiwzXQ%3D%3D
//
// If both method and id are missing, params is treated as batch call.
JsonGetParam decodeGetParams(const std::string& query);
} // namespace json
} // namespace aria2
#endif // D_JSON_H
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