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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* camel-recipient.h : handle recipients (addresses) and recipiemt lists */

/* 
 *
 * Copyright (C) 1999 Bertrand Guiheneuf <Bertrand.Guiheneuf@aful.org> .
 *
 * 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 "glib.h"
#include "hash-table-utils.h"
#include "camel-recipient.h"


CamelRecipientTable *
camel_recipient_new ()
{
    CamelRecipientTable *recipient_table;

    recipient_table = g_new0 (CamelRecipientTable, 1);
    recipient_table->recipient_hash_table = g_hash_table_new (g_strcase_hash, g_strcase_equal);
    recipient_table->ref_count = 1;
    return recipient_table;
}


void 
camel_recipient_ref (CamelRecipientTable *recipient_table)
{
    g_return_if_fail (recipient_table);
    recipient_table->ref_count += 1;
}



static void 
_free_recipient_list (gpointer key, gpointer value, gpointer user_data)
{
    GList *recipient_list = (GList *)value;
    gchar *recipient_name = (gchar *)key;

    while (recipient_list) {
        g_free (recipient_list->data);
        recipient_list = recipient_list->next;
    }

    g_free (recipient_name);
    
}

void 
camel_recipient_free (CamelRecipientTable *recipient_table)
{
    g_return_if_fail (recipient_table);

    /* free each recipient list */
    g_hash_table_foreach (recipient_table->recipient_hash_table, _free_recipient_list, NULL);
    g_hash_table_destroy (recipient_table->recipient_hash_table);
}




void 
camel_recipient_unref (CamelRecipientTable *recipient_table)
{
    g_return_if_fail (recipient_table);
    recipient_table->ref_count -= 1;
    if (recipient_table->ref_count <1)      
            camel_recipient_free (recipient_table);
        
}



void 
camel_recipient_add (CamelRecipientTable *recipient_table, 
             const gchar *recipient_type, 
             const gchar *recipient)
{
    GList *recipients_list;
    GList *existent_list;
    
    /* see if there is already a list for this recipient type */
    existent_list = (GList *)g_hash_table_lookup (recipient_table->recipient_hash_table, recipient_type);
    
    
    /* append the new recipient to the recipient list
       if the existent_list is NULL, then a new GList is
       automagically created */ 
    recipients_list = g_list_append (existent_list, (gpointer)recipient);
    
    if (!existent_list) /* if there was no recipient of this type create the section */
        g_hash_table_insert (recipient_table->recipient_hash_table, recipient_type, recipients_list);
    else 
        g_free (recipient_type);

}




static void
camel_recipient_remove (CamelRecipientTable *recipient_table,
            const gchar *recipient_type,
            const gchar *recipient) 
{
    GList *recipients_list;
    GList *new_recipients_list;
    GList *old_element;
    gchar *old_recipient_type;
    
    /* if the recipient type section does not exist, do nothing */
    if (! g_hash_table_lookup_extended (recipient_table->recipient_hash_table, 
                        recipient_type, 
                        (gpointer)&(old_recipient_type),
                        (gpointer)&(recipients_list)) 
        ) return;
    
    /* look for the recipient to remove */
    /* g_list_find_custom does use "const" for recipient, is it a mistake ? */
    old_element = g_list_find_custom (recipients_list, recipient, g_strcase_equal);
    if (old_element) {
        /* if recipient exists, remove it */
        new_recipients_list =  g_list_remove_link (recipients_list, old_element);
        
        /* if glist head has changed, fix up hash table */
        if (new_recipients_list != recipients_list)
            g_hash_table_insert (recipient_table->recipient_hash_table, old_recipient_type, new_recipients_list);
        
        g_free( (gchar *)(old_element->data));
        g_list_free_1 (old_element);
    }
}



const GList *
camel_recipient_get (CamelRecipientTable *recipient_table,
              const gchar *recipient_type)
{
    return (const GList *)g_hash_table_lookup (recipient_table->recipient_hash_table, recipient_type);
}