cherry.goods.command.CommandLauncherImpl.java Source code

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Here is the source code for cherry.goods.command.CommandLauncherImpl.java

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/*
 * Copyright 2014,2015 agwlvssainokuni
 *
 * Licensed 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 cherry.goods.command;

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;

import com.google.common.io.CharStreams;

/**
 * <br />
 * ??? (??) ??
 */
public class CommandLauncherImpl implements CommandLauncher {

    /** ???????UTF-8 */
    private Charset charset = StandardCharsets.UTF_8;

    /** ????true (?) */
    private boolean redirectErrorStream = true;

    public void setCharset(Charset charset) {
        this.charset = charset;
    }

    public void setRedirectErrorStream(boolean redirectErrorStream) {
        this.redirectErrorStream = redirectErrorStream;
    }

    /**
     * ??? (??) ??
     * 
     * @param command ? ()
     * @return? (??)
     * @throws IOException ? (???)?????????
     * @throws InterruptedException ?????????
     */
    @Override
    public CommandResult launch(String... command) throws IOException, InterruptedException {
        CommandResult result = new CommandResult();
        Process proc = new ProcessBuilder(command).redirectErrorStream(redirectErrorStream).start();
        try (InputStream in = proc.getErrorStream(); Reader r = new InputStreamReader(in, charset)) {
            result.setStderr(CharStreams.toString(r));
        }
        try (InputStream in = proc.getInputStream(); Reader r = new InputStreamReader(in, charset)) {
            result.setStdout(CharStreams.toString(r));
        }
        int exitValue = proc.waitFor();
        result.setExitValue(exitValue);
        return result;
    }

}