com.sangupta.andruil.commands.file.Combine.java Source code

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Here is the source code for com.sangupta.andruil.commands.file.Combine.java

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/**
 *
 * andruil - Java command line shell
 * Copyright (c) 2012-2015, Sandeep Gupta
 * 
 * http://www.sangupta/projects/andruil
 * 
 * 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 com.sangupta.andruil.commands.file;

import java.io.File;
import java.io.IOException;

import org.apache.commons.io.FileUtils;

import com.sangupta.andruil.commands.base.AbstractAndruilCommand;

/**
 * Combine multiple files into one.
 * 
 * @author sangupta
 *
 */
public class Combine extends AbstractAndruilCommand {

    @Override
    public void execute(String[] args) {
        if (args.length < 3) {
            System.out.println("Usage: combine <out-file> <file1> <file2> ...");
            return;
        }

        File outFile = resolveFile(args[0]);
        if (outFile.exists() && outFile.isFile()) {
            System.out.println("Output file exists... exiting!");
            return;
        }

        try {
            for (int index = 1; index < args.length; index++) {
                File inFile = resolveFile(args[index]);
                if (!(inFile.exists() && inFile.isFile())) {
                    continue;
                }

                byte[] bytes = FileUtils.readFileToByteArray(inFile);
                FileUtils.writeByteArrayToFile(outFile, bytes, true);
            }
        } catch (IOException e) {
            System.out.println("Unable to copy files: " + e.getMessage());
        }
    }

    @Override
    public String getHelpLine() {
        return "Combine multiple files into one";
    }

    @Override
    public String getName() {
        return "combine";
    }

}