/*
 * 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.karaf.shell.impl.console;

import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;

import org.apache.karaf.shell.api.console.CommandLine;
import org.apache.karaf.shell.api.console.Completer;
import org.apache.karaf.shell.api.console.Session;
import org.apache.karaf.shell.impl.console.parsing.CommandLineParser;

public class CompleterAsCompletor implements jline.console.completer.Completer {

    private final Session session;
    private final Completer completer;

    public CompleterAsCompletor(Session session, Completer completer) {
        this.session = session;
        this.completer = completer;
    }

    @SuppressWarnings("unchecked")
	public int complete(String buffer, int cursor, @SuppressWarnings("rawtypes") List candidates) {
        AtomicInteger begOfLine = new AtomicInteger();
        CommandLine cmdLine = CommandLineParser.buildCommandLine(session, buffer, cursor, begOfLine);
        int res = completer.complete(session, cmdLine, candidates);
        if (res >= 0) {
            return res + begOfLine.get();
        } else {
            return res;
        }
    }

}
