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/*
* Copyright (C) 2008 Martin Willi
* Hochschule fuer Technik Rapperswil
*
* 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. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* 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.
*/
/**
* @defgroup fetcher_manager fetcher_manager
* @{ @ingroup fetcher
*/
#ifndef FETCHER_MANAGER_H_
#define FETCHER_MANAGER_H_
typedef struct fetcher_manager_t fetcher_manager_t;
#include <fetcher/fetcher.h>
/**
* Fetches from URIs using registerd fetcher_t instances.
*/
struct fetcher_manager_t {
/**
* Fetch data from URI.
*
* The variable argument list contains fetcher_option_t's, followed
* by a option specific data argument.
* If no FETCH_CALLBACK function is given as option, userdata must be
* a chunk_t*. This chunk gets allocated, accumulated data using the
* fetcher_default_callback() function.
*
* @param uri URI to fetch from
* @param userdata userdata to pass to callback function.
* @param options FETCH_END terminated fetcher_option_t arguments
* @return status indicating result of fetch
*/
status_t (*fetch)(fetcher_manager_t *this, char *url, void *userdata, ...);
/**
* Register a fetcher implementation.
*
* @param constructor fetcher constructor function
* @param url URL type this fetcher fetches, e.g. "http://"
*/
void (*add_fetcher)(fetcher_manager_t *this,
fetcher_constructor_t constructor, char *url);
/**
* Unregister a previously registered fetcher implementation.
*
* @param constructor fetcher constructor function to unregister
*/
void (*remove_fetcher)(fetcher_manager_t *this,
fetcher_constructor_t constructor);
/**
* Destroy a fetcher_manager instance.
*/
void (*destroy)(fetcher_manager_t *this);
};
/**
* Create a fetcher_manager instance.
*/
fetcher_manager_t *fetcher_manager_create();
#endif /** FETCHER_MANAGER_H_ @}*/
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