/*
 * 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.ant.props.stringops;

/**
 * DeleteFromEndGreedy operation.
 */
public class DeleteFromEndGreedy extends DeletePartOperation {

    /**
     * Construct a new DeleteFromEndGreedy operation.
     */
    public DeleteFromEndGreedy() {
        super("^(.*)%%(.*)$", GREEDY);
    }

    /** {@inheritDoc} */
    protected String specializePattern(String pattern) {
        return "^(.*?)(?:" + pattern + ")$";
    }

    /**
     * {@inheritDoc}
     * @see org.apache.ant.props.stringops.PatternOperation#convertToRegex(java.lang.StringBuffer, boolean)
     */
    protected void convertToRegex(StringBuffer sb, boolean greedy) {
        deEscape('%', sb);
        super.convertToRegex(sb, greedy);
    }
}