MySQL数据库

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Visual C++

friends.c：源码内容
							/* 
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
#include "common/setup_before.h"
#include <stdio.h>
#ifdef HAVE_STDDEF_H
# include <stddef.h>
#else
# ifndef NULL
#  define NULL ((void *)0)
# endif
#endif
#ifdef STDC_HEADERS
# include <stdlib.h>
#else
# ifdef HAVE_MALLOC_H
#  include <malloc.h>
# endif
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#else
# ifdef HAVE_STRINGS_H
#  include <strings.h>
# endif
#endif
#include "compat/strcasecmp.h"
#include "common/eventlog.h"
#include "common/list.h"
#include "account.h"
#include "prefs.h"
#include "friends.h"
#include "common/setup_after.h"
extern t_account * friend_get_account(t_friend * fr)
{
    if (fr == NULL)
    {
        eventlog(eventlog_level_error, __FUNCTION__,"got NULL account");
        return NULL;
    }
    return fr->friendacc;
}
extern int friend_set_account(t_friend * fr, t_account * acc)
{
    if (fr == NULL)
    {
        eventlog(eventlog_level_error, __FUNCTION__,"got NULL account");
        return -1;
    }
    fr->friendacc=acc;
    return 0;
}
extern char friend_get_mutual(t_friend * fr)
{
    if (fr == NULL)
    {
        eventlog(eventlog_level_error, __FUNCTION__,"got NULL account");
        return 0;
    }
    return fr->mutual;
}
extern int friend_set_mutual(t_friend * fr, char mutual)
{
    if (fr == NULL)
    {
        eventlog(eventlog_level_error, __FUNCTION__,"got NULL account");
        return -1;
    }
    fr->mutual=mutual;
    return 0;
}
extern t_list * friendlist_init(void)
{
    t_list * new;
    if((new = list_create())==NULL)
    {
        eventlog(eventlog_level_error,__FUNCTION__,"could not create friendlist");
        return NULL;
    }
    return new;
}
extern int friendlist_unload(t_list * flist)
{
    t_elem  * curr;
    t_friend * fr;
    if(flist==NULL)
        return -1;
    LIST_TRAVERSE(flist,curr)
    {
        if (!(fr = elem_get_data(curr)))
        {
            eventlog(eventlog_level_error,__FUNCTION__,"found NULL entry in list");
            continue;
        }
        fr->mutual=-1;
    }
    return 0;
}
extern int friendlist_close(t_list * flist)
{
    t_elem * curr;
    t_friend * fr;
    if(flist==NULL)
        return -1;
    LIST_TRAVERSE(flist,curr)
    {
        if (!(fr = elem_get_data(curr)))
        {
            eventlog(eventlog_level_error,__FUNCTION__,"found NULL entry in list");
            continue;
        }
	if (list_remove_elem(flist, curr) < 0) 
	    eventlog(eventlog_level_error, __FUNCTION__, "could not remove elem from flist");
        free((void *) fr);
    }
    list_destroy(flist);
    return 0;
}
extern int friendlist_purge(t_list * flist)
{
    t_elem  * curr;
    t_friend * fr;
    int doremove=0;
    if(flist==NULL)
        return -1;
    LIST_TRAVERSE(flist,curr)
    {
        if (!(fr = elem_get_data(curr)))
        {
            eventlog(eventlog_level_error,__FUNCTION__,"found NULL entry in list");
            continue;
        }
        if (fr->mutual<0)
          {
            if(list_remove_elem(flist, curr)<0)
                eventlog(eventlog_level_error,__FUNCTION__,"could not remove item from list");
            else
                doremove=1;
          }
    }
    if(doremove)
        list_purge(flist);
    return 0;
}
extern int friendlist_add_account(t_list * flist, t_account * acc, int mutual)
{
    t_friend * fr;
    if(flist==NULL)
        return -1;
    if (!(fr = malloc(sizeof(t_friend))))
    {
        eventlog(eventlog_level_error,__FUNCTION__,"could not allocate memory for friend");
        return -1;
    }
    fr->friendacc = acc;
    fr->mutual = mutual;
    list_append_data(flist, fr);
    return 0;
}
extern int friendlist_remove_friend(t_list * flist, t_friend * fr)
{
    if(flist==NULL)
        return -1;
    if(fr!=NULL)
    {
        if(list_remove_data(flist, fr)<0)
        {
            eventlog(eventlog_level_error,__FUNCTION__,"could not remove item from list");
            return -1;
        }
/* commented by dizzy
        else
            list_purge(flist); */
	free((void *)fr);
        return 0;
    }
    return -1;
}
extern int friendlist_remove_account(t_list * flist, t_account * acc)
{
    t_friend * fr;
    if(flist==NULL)
        return -1;
    fr=friendlist_find_account(flist, acc);
    if(fr!=NULL)
    {
        if(list_remove_data(flist, fr)<0)
        {
            eventlog(eventlog_level_error,__FUNCTION__,"could not remove item from list");
            return -1;
        }
/* commented by dizzy
        else
            list_purge(flist); */
	free((void *)fr);
        return 0;
    }
    return -1;
}
extern int friendlist_remove_username(t_list * flist, const char * accname)
{
    t_friend * fr;
    if(flist==NULL)
        return -1;
    fr=friendlist_find_username(flist, accname);
    if(fr!=NULL)
    {
        if(list_remove_data(flist, fr)<0)
        {
            eventlog(eventlog_level_error,__FUNCTION__,"could not remove item from list");
            return -1;
        }
/* commented by dizzy
        else
            list_purge(flist); */
	free((void *)fr);
        return 0;
    }
    return -1;
}
extern t_friend * friendlist_find_account(t_list * flist, t_account * acc)
{
    t_elem  * curr;
    t_friend * fr;
    if(flist==NULL)
        return NULL;
    LIST_TRAVERSE(flist,curr)
    {
        if (!(fr = elem_get_data(curr)))
        {
            eventlog(eventlog_level_error,__FUNCTION__,"found NULL entry in list");
            continue;
        }
        if (fr->friendacc == acc)
            return fr;
    }
    return NULL;
}
extern t_friend * friendlist_find_username(t_list * flist, const char * accname)
{
    t_elem  * curr;
    t_friend * fr;
    if(flist==NULL)
        return NULL;
    LIST_TRAVERSE(flist,curr)
    {
        if (!(fr = elem_get_data(curr)))
        {
            eventlog(eventlog_level_error,__FUNCTION__,"found NULL entry in list");
            continue;
        }
        if (strcasecmp(account_get_name(fr->friendacc),accname)==0) return fr;
    }
    return NULL;
}
extern t_friend * friendlist_find_uid(t_list * flist, int uid)
{
    t_elem  * curr;
    t_friend * fr;
    if(flist==NULL)
        return NULL;
    LIST_TRAVERSE(flist,curr)
    {
        if (!(fr = elem_get_data(curr)))
        {
            eventlog(eventlog_level_error,__FUNCTION__,"found NULL entry in list");
            continue;
        }
        if (account_get_uid(fr->friendacc)==uid) return fr;
    }
    return NULL;
}

						