/*
 * Copyright (c) 2002,2003 Robert Collins <rbtcollins@hotmail.com>
 *
 * 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, USA.
 *
 */

#include "Trie.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include "TrieNode.h"
#include "TrieCharTransform.h"

Trie::Trie (TrieCharTransform *aTransform) : head (0) , transform (aTransform)
{}

extern "C" void *TrieCreate ()
{
    return new Trie;
}

Trie::~Trie ()
{
    delete head;
    delete transform;
}

extern "C" void TrieDestroy (void *aTrie)
{
    delete (Trie *)aTrie;
}

extern "C" void *TrieFind (void *aTrie, char const *aString, size_t theLength)
{
    return ((Trie *)aTrie)->find (aString, theLength);
}

bool

Trie::add
(char const *aString, size_t theLength, void *privatedata)
{
    if (!privatedata)
        return false;

    if (head) {
        if (find (aString, theLength))
            return false;

        return head->add
               (aString, theLength, privatedata, transform);
    }

    head = new TrieNode;

    return head->add
           (aString, theLength, privatedata, transform);
}

extern "C" int TrieAdd (void *aTrie, char const *aString, size_t theLength, void *privatedata)
{

    return ((Trie *)aTrie)->add
           (aString, theLength, privatedata);
}

#ifndef _USE_INLINE_
#include "Trie.cci"
#endif
