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/** BEGIN COPYRIGHT BLOCK
 * 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; version 2 of the License.
 * 
 * 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.
 * 
 * In addition, as a special exception, Red Hat, Inc. gives You the additional
 * right to link the code of this Program with code not covered under the GNU
 * General Public License ("Non-GPL Code") and to distribute linked combinations
 * including the two, subject to the limitations in this paragraph. Non-GPL Code
 * permitted under this exception must only link to the code of this Program
 * through those well defined interfaces identified in the file named EXCEPTION
 * found in the source code files (the "Approved Interfaces"). The files of
 * Non-GPL Code may instantiate templates or use macros or inline functions from
 * the Approved Interfaces without causing the resulting work to be covered by
 * the GNU General Public License. Only Red Hat, Inc. may make changes or
 * additions to the list of Approved Interfaces. You must obey the GNU General
 * Public License in all respects for all of the Program code and other code used
 * in conjunction with the Program except the Non-GPL Code covered by this
 * exception. If you modify this file, you may extend this exception to your
 * version of the file, but you are not obligated to do so. If you do not wish to
 * do so, delete this exception statement from your version. 
 * 
 * 
 * Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
 * Copyright (C) 2005 Red Hat, Inc.
 * All rights reserved.
 * END COPYRIGHT BLOCK **/
#ifndef RESHASH_H
#define RESHASH_H
/**********************************************************************
    Hash  --> Tree --> ValueList      

    ValueList: language per item, each list associated with one key
    Tree:  contains multiple keys
    Hash:  Based on hash to decide withc tree to use for lookup

***********************************************************************/

/* 
  Valuelist, each item contains 
    language:  ISO two or four letters 
    value:     UTF-8 encoding strings
 */
typedef struct ValueNode {
	char *language;
	char *value;
    struct ValueNode *next;
} ValueNode;


/*  
  Current: BINARY TREE
  Future: balanced tree for high search performance
 */
typedef struct TreeNodeStruct {
	ValueNode *vlist;
    char *key;
	char *value;
    struct TreeNodeStruct *left;
    struct TreeNodeStruct *right;
} TreeNode;


typedef struct ResHash {
    char *name;  /* name of hash table */
    TreeNode *treelist;
} ResHash;


ResHash * ResHashCreate(char * name);
int ResHashAdd(ResHash *res, char *key, char *value, char *language);
const char *ResHashSearch(ResHash *res, char *key, char *language);
void ResHashDestroy(ResHash *res);

#endif