package org.apache.tika.batch.fs;

/*
 * 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.
 */

import org.apache.commons.io.IOUtils;

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

import static java.nio.charset.StandardCharsets.UTF_8;

public class StringStreamGobbler implements Runnable {

        //plagiarized from org.apache.oodt's StreamGobbler
        private final BufferedReader reader;
        private volatile boolean running = true;
        private final StringBuilder sb = new StringBuilder();

        public StringStreamGobbler(InputStream is) {
            this.reader = new BufferedReader(new InputStreamReader(new BufferedInputStream(is), UTF_8));
        }

        @Override
        public void run() {
            String line = null;
            try {
                while ((line = reader.readLine()) != null && this.running) {
                    sb.append(line);
                    sb.append("\n");
                }
            } catch (IOException e) {
                //swallow ioe
            }
        }

        public void stopGobblingAndDie() {
            running = false;
            IOUtils.closeQuietly(reader);
        }

        @Override
        public String toString() {
            return sb.toString();
    }

}
