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/*
* The ManaPlus Client
* Copyright (C) 2009-2010 The Mana Developers
* Copyright (C) 2011 The ManaPlus Developers
*
* This file is part of The ManaPlus Client.
*
* 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
* 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef NET_DOWNLOAD_H
#define NET_DOWNLOAD_H
#include <SDL_types.h>
#include <stdio.h>
#include <string>
#ifdef __GNUC__
#define A_UNUSED __attribute__ ((unused))
#else
#define A_UNUSED
#endif
enum DownloadStatus
{
DOWNLOAD_STATUS_CANCELLED = -3,
DOWNLOAD_STATUS_THREAD_ERROR = -2,
DOWNLOAD_STATUS_ERROR = -1,
DOWNLOAD_STATUS_STARTING = 0,
DOWNLOAD_STATUS_IDLE,
DOWNLOAD_STATUS_COMPLETE
};
typedef int (*DownloadUpdate)(void *ptr, DownloadStatus status,
size_t total, size_t remaining);
// Matches what CURL expects
typedef size_t (*WriteFunction)( void *ptr, size_t size, size_t nmemb,
void *stream);
struct SDL_Thread;
typedef void CURL;
struct curl_slist;
namespace Net
{
class Download
{
public:
Download(void *ptr, const std::string &url,
DownloadUpdate updateFunction, bool ignoreError = false);
~Download();
void addHeader(const std::string &header);
/**
* Convience method for adding no-cache headers.
*/
void noCache();
void setFile(const std::string &filename, Sint64 adler32 = -1);
void setWriteFunction(WriteFunction write);
/**
* Starts the download thread.
* @returns true if thread was created
* false if the thread could not be made or download wasn't
* properly setup
*/
bool start();
/**
* Cancels the download. Returns immediately, the cancelled status will
* be noted in the next avialable update call.
*/
void cancel();
char *getError();
void setIgnoreError(bool n)
{ mIgnoreError = n; }
static unsigned long fadler32(FILE *file);
private:
static int downloadThread(void *ptr);
static int downloadProgress(void *clientp, double dltotal,
double dlnow, double ultotal,
double ulnow);
void *mPtr;
std::string mUrl;
struct
{
unsigned cancel : 1;
unsigned memoryWrite: 1;
unsigned checkAdler: 1;
} mOptions;
std::string mFileName;
WriteFunction mWriteFunction;
unsigned long mAdler;
DownloadUpdate mUpdateFunction;
SDL_Thread *mThread;
CURL *mCurl;
curl_slist *mHeaders;
char *mError;
bool mIgnoreError;
};
} // namespace Net
#endif // NET_DOWNLOAD_H
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