httpjsonrequest.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 3 of the License, or
 * (at your option) any later version.
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 * 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.
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 * You should have received a copy of the GNU General Public License
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#ifndef BACKENDS_NETWORKING_HTTP_HTTPJSONREQUEST_H
#define BACKENDS_NETWORKING_HTTP_HTTPJSONREQUEST_H
 
#include "backends/networking/http/httprequest.h"
#include "common/memstream.h"
#include "common/formats/json.h"
 
namespace Networking {
 
typedef Response<const Common::JSONValue *> JsonResponse;
typedef Common::BaseCallback<const JsonResponse &> *JsonCallback;
typedef Common::BaseCallback<const Common::JSONValue *> *JSONValueCallback;
 
#define HTTP_JSON_REQUEST_BUFFER_SIZE 512 * 1024
 
class HttpJsonRequest: public HttpRequest {
protected:
    JsonCallback _jsonCallback;
    Common::MemoryWriteStreamDynamic _contentsStream;
    byte *_buffer;
 
    virtual void finishJson(const Common::JSONValue *json);
 
public:
    HttpJsonRequest(JsonCallback cb, ErrorCallback ecb, const Common::String &url);
    ~HttpJsonRequest() override;
 
    void handle() override;
    void restart() override;
 
    static bool jsonIsObject(const Common::JSONValue *item, const char *warningPrefix);
    static bool jsonContainsObject(const Common::JSONObject &item, const char *key, const char *warningPrefix, bool isOptional = false);
    static bool jsonContainsString(const Common::JSONObject &item, const char *key, const char *warningPrefix, bool isOptional = false);
    static bool jsonContainsIntegerNumber(const Common::JSONObject &item, const char *key, const char *warningPrefix, bool isOptional = false);
    static bool jsonContainsArray(const Common::JSONObject &item, const char *key, const char *warningPrefix, bool isOptional = false);
    static bool jsonContainsStringOrIntegerNumber(const Common::JSONObject &item, const char *key, const char *warningPrefix, bool isOptional = false);
    static bool jsonContainsAttribute(const Common::JSONObject &item, const char *key, const char *warningPrefix, bool isOptional = false);
};
 
} // End of namespace Networking
 
#endif