FileUtils.java

/**
 * Sahi - Web Automation and Test Tool
 *
 * Copyright  2006  V Narayan Raman
 *
 * 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 net.sf.sahi.util;

import java.io.*;
import java.nio.channels.FileChannel;

public class FileUtils {

  public static void copyDir(final String src, final String dest) throws IOException, InterruptedException {
    copyDir(new File(src), new File(dest));
  }

  public static void copyDir(final File src, final File dest) throws IOException {
    dest.mkdirs();
    File[] files = src.listFiles();

    int j = files.length;   // cache the length so it doesn't need to be looked up over and over in the loop
    for (int i = 0; i < j; i++) {
      File file = files[i];
      if (file.isDirectory()) {
        copyDir(file, new File(dest, file.getName()));
      } else {
        copyFile(file, new File(dest, file.getName()));
      }
    }
  }

  public static void copyFile(final String src, final String dest) throws IOException {
    copyFile(new File(src), new File(dest));
  }

  public static boolean renameFile(String oldPath, String newPath) {
    File oldFile = new File(oldPath);
    File newFile = new File(newPath);
    if (newFile.exists()) newFile.delete();
    return oldFile.renameTo(newFile);
  }

  public static void copyFile(final File src, final File dest) throws IOException {
    dest.getParentFile().mkdirs();
    dest.createNewFile();

    FileChannel sourceChannel = new FileInputStream(src).getChannel();
    FileChannel targetChannel = new FileOutputStream(dest).getChannel();
    sourceChannel.transferTo(0, sourceChannel.size(), targetChannel);
    sourceChannel.close();
    targetChannel.close();
  }

  public static String cleanFileName(String fileName) {
    if (fileName == null) return fileName;
    return fileName.replaceAll("[\\\\/:*?\"<>|]", "");
  }

  public static File copyToTempFile(String filename, Class resourceLocation, File tempDir) {
    File temp = null;
    InputStream in = null;
    FileOutputStream out = null;
    try {
      in = resourceLocation.getResourceAsStream(filename);
      temp = new File(tempDir, filename);
      out = new FileOutputStream(temp);

      int read = 0;
      byte[] bytes = new byte[1024];

      while ((read = in.read(bytes)) != -1) {
        out.write(bytes, 0, read);
      }
    } catch (IOException e) {
      e.printStackTrace();
    } finally {
      if (in != null) {
        try {
          in.close();
        } catch (IOException e) {
          e.printStackTrace();
        }
      }
      if (out != null) {
        try {
          out.close();
        } catch (IOException e) {
          e.printStackTrace();
        }

      }
    }

    return temp;
  }
}