org.openqa.selenium.io.Zip Maven / Gradle / Ivy

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// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The SFC 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.


package org.openqa.selenium.io;

import com.google.common.io.Closeables;

import java.io.BufferedOutputStream;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Base64;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;

import static com.google.common.base.Preconditions.checkArgument;

public class Zip {
  private static final int BUF_SIZE = 16384; // "big"

  public void zip(File inputDir, File output) throws IOException {
    if (output.exists()) {
      throw new IOException("File already exists: " + output);
    }

    FileOutputStream fos = null;
    try {
      fos = new FileOutputStream(output);
      zip(inputDir, fos);
    } finally {
      Closeables.close(fos, false);
    }
  }

  public String zip(File inputDir) throws IOException {
    ByteArrayOutputStream bos = new ByteArrayOutputStream();

    try {
      zip(inputDir, bos);
      return Base64.getEncoder().encodeToString(bos.toByteArray());
    } finally {
      bos.close();
    }
  }

  public String zipFile(File baseDir, File fileToCompress) throws IOException {
    checkArgument(fileToCompress.isFile(), "File should be a file: " + fileToCompress);

    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    ZipOutputStream zos = new ZipOutputStream(bos);

    try {
      addToZip(baseDir.getAbsolutePath(), zos, fileToCompress);
      return Base64.getEncoder().encodeToString(bos.toByteArray());
    } finally {
      zos.close();
      bos.close();
    }

  }

  private void zip(File inputDir, OutputStream writeTo) throws IOException {
    ZipOutputStream zos = null;
    try {
      zos = new ZipOutputStream(writeTo);
      addToZip(inputDir.getAbsolutePath(), zos, inputDir);
    } finally {
      Closeables.close(zos, false);
    }
  }

  private void addToZip(String basePath, ZipOutputStream zos, File toAdd) throws IOException {
    if (toAdd.isDirectory()) {
      File[] files = toAdd.listFiles();
      if (files != null) {
        for (File file : files) {
          addToZip(basePath, zos, file);
        }
      }
    } else {
      FileInputStream fis = new FileInputStream(toAdd);
      String name = toAdd.getAbsolutePath().substring(basePath.length() + 1);

      ZipEntry entry = new ZipEntry(name.replace('\\', '/'));
      zos.putNextEntry(entry);

      int len;
      byte[] buffer = new byte[4096];
      while ((len = fis.read(buffer)) != -1) {
        zos.write(buffer, 0, len);
      }

      fis.close();
      zos.closeEntry();
    }
  }

  public void unzip(String source, File outputDir) throws IOException {
    byte[] bytes = Base64.getDecoder().decode(source);

    ByteArrayInputStream bis = null;
    try {
      bis = new ByteArrayInputStream(bytes);
      unzip(bis, outputDir);
    } finally {
      Closeables.close(bis, false);
    }
  }

  public void unzip(File source, File outputDir) throws IOException {
    FileInputStream fis = null;

    try {
      fis = new FileInputStream(source);
      unzip(fis, outputDir);
    } finally {
      Closeables.close(fis, false);
    }
  }

  public void unzip(InputStream source, File outputDir) throws IOException {
    ZipInputStream zis = new ZipInputStream(source);

    try {
      ZipEntry entry;
      while ((entry = zis.getNextEntry()) != null) {
        File file = new File(outputDir, entry.getName());
        if (entry.isDirectory()) {
          FileHandler.createDir(file);
          continue;
        }

        unzipFile(outputDir, zis, entry.getName());
      }
    } finally {
      zis.close();
    }
  }

  public void unzipFile(File output, InputStream zipStream, String name)
      throws IOException {
    File toWrite = new File(output, name);

    if (!FileHandler.createDir(toWrite.getParentFile()))
      throw new IOException("Cannot create parent director for: " + name);

    OutputStream out = new BufferedOutputStream(new FileOutputStream(toWrite), BUF_SIZE);
    try {
      byte[] buffer = new byte[BUF_SIZE];
      int read;
      while ((read = zipStream.read(buffer)) != -1) {
        out.write(buffer, 0, read);
      }
    } finally {
      out.close();
    }
  }
}