rss.h

来自「AMLOGIC DPF source code」· C头文件 代码 · 共 142 行

/*******************************************************************
 * 
 *  Copyright C 2006 by Amlogic, Inc. All Rights Reserved.
 *
 *  Description: RSS 2.0 feed reader.
 *
 *  Author: Jerry Cao
 *  Created: Mon Nov 13 20:42:23 2006
 *
 *******************************************************************/

#ifndef _RSS_H_
#define _RSS_H_

/***************************** INCLUDES *****************************/

#include "includes.h"
#include "AVmalloc.h"

#include "ixml.h"
#include "xml_util.h"

/************************ CONSTANTS & MACROS ************************/

#define RSS_ERROR_MSG_SIZE	128

#define rssMalloc(x)	AVMem_malloc(x)
#define rssFree(x)		if (x) AVMem_free(x)

#ifdef RSS_DEBUG
  #define rssPrint		AVOS_printf_ext
#else
  #define rssPrint(x...)
#endif /* RSS_DEBUG */

#define RSS_WAIT_TIMEOUT 500

/****************************** TYPES ******************************/
typedef int (*rss_interrupt_cb_t)(void* arg);

typedef enum
{
    eRSS_NoError = 0,
    eRSS_NotSupported,
    eRSS_InvalidRss,
    eRSS_HttpError,
    eRSS_UrlError,
    eRSS_Cancled
} rssStatus_e;

/* Supported RSS feed type. */
typedef enum 
{
    eRSS_FEED_UNKNOWN = 0,	/* Unknown feed */
    eRSS_FEED_PICASA,		/* Google Picasa */
    eRSS_FEED_FLICKR,		/* Yahoo Flickr */
    eRSS_FEED_IPHOTO,		/* Apple iPhoto */
} rssFeedType_e;

/* RSS item type. */
typedef enum 
{
    eRSS_ITEM_PHOTO = 0,
    eRSS_ITEM_ALBUM,
} rssItemType_e;

/* RSS HTTP connection data. */
typedef struct rssConn_s
{
    HTTPTcpConnection_t * httpConn;
    char                * httpResponse;
    size_t                httpResponseSize;
    OS_EVENT            * httpWait;
    void                * httpCookie;
} rssConn_t;

/* RSS feed data. */
typedef struct rssFeed_s
{
    URI_t * uri;
    char  * version;
    char  * title;
    char  * lang;
    char  * thumbnail;

    /* HTTP request execution status and error message buffer. */
    rssStatus_e status;
    char        lastErrorMsg[RSS_ERROR_MSG_SIZE];

    rssFeedType_e type;
    rssConn_t   * conn;
} rssFeed_t;

struct rssItemList_s;
/* RSS item. */
typedef struct rssItem_s
{
    list_t link;
    char * title;
    char * thumbnail;
    char * url;
    rssItemType_e type;
    /* used when item is album, othersize it is NULL */
    rssFeed_t * child_feed;
    struct rssItemList_s* child_list;
} rssItem_t;

typedef struct rssItemList_s
{
    int count;
    rssItem_t *head;
} rssItemList_t;

/**************************** PROTOTYPES ****************************/

/* Debug routine. */
#ifdef RSS_DEBUG
  void rss_dump_buffer(char *buf, uint32_t buf_size);
  void rss_dump_feed(rssFeed_t *feed);
  void rss_dump_item(rssItem_t *item);
  void rss_dump_item_list(rssItemList_t *list);
  void rss_test(char *feeds[]);
#endif /* RSS_DEBUG */

rssFeed_t *
	 rssFeedCreate(char *url);
void
	rssFeedDelete(rssFeed_t *feed);
rssStatus_e
	rssFeedGet(rssFeed_t *feed, 
               char *url, 
               rssItemList_t *list,
               rss_interrupt_cb_t interrupt_cb,
               void* arg);
rssItem_t *
	rssItemCreate(rssFeed_t *feed, Nodeptr node);
void
	rssItemDelete(rssItem_t *item);
void
	rssItemListFree(rssItem_t *list);
#endif /* _RSS_H_ */