/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.hyracks.data.std.util;

import org.apache.hyracks.data.std.primitive.UTF8StringPointable;

public class UTF8StringCharacterIterator implements ICharIterator {

    private UTF8StringPointable utf8Ptr;
    private int pos;

    public UTF8StringCharacterIterator reset(UTF8StringPointable utf8Ptr) {
        this.utf8Ptr = utf8Ptr;
        return reset();
    }

    public UTF8StringCharacterIterator reset() {
        this.pos = utf8Ptr.getMetaDataLength();
        return this;
    }

    @Override
    public boolean hasNext() {
        return pos < utf8Ptr.getMetaDataLength() + utf8Ptr.getUTF8Length();
    }

    @Override
    public char next() {
        char ret = utf8Ptr.charAt(pos);
        pos += utf8Ptr.charSize(pos);
        return ret;
    }
}
