FileUtils.java

/*
 * Copyright 2014 Google Inc. All rights reserved.
 *
 * 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.google.samples.apps.iosched.util;

import com.google.api.client.util.IOUtils;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.charset.Charset;

/**
 * Utilities and constants related to files
 */
public class FileUtils {
    public static void writeFile(String data, File file) throws IOException {
        writeFile(data.getBytes(Charset.forName("UTF-8")), file);
    }

    public static void writeFile(byte[] data, File file) throws IOException {
        BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(file, false));
        bos.write(data);
        bos.close();
    }

    public static String readFileAsString(File file) throws IOException {
        BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        IOUtils.copy(bis, bos);
        byte[] contents = bos.toByteArray();
        bis.close();
        bos.close();
        return new String(contents, Charset.forName("UTF-8"));
    }
}