/**
* Unzips entries from {@code stream} into {@code directory}.
*
* @param stream source zip stream
* @param directory target directory to which entries going to be unzipped.
* @param buffer the buffer to use
* @throws IOException if an I/O error occurs.
*/
public static void unzip(final ZipInputStream stream, final File directory, final byte[] buffer)
throws IOException {
if (stream == null) {
throw new NullPointerException("stream");
}
if (directory == null) {
throw new NullPointerException("directory");
}
if (!directory.isDirectory()) {
throw new IllegalArgumentException("directory doesn't exist");
}
if (buffer == null) {
throw new NullPointerException("buffer");
}
if (buffer.length == 0) {
throw new IllegalArgumentException("buffer.length(" + buffer.length + ") == 0");
}
ZipEntry entry;
while ((entry = stream.getNextEntry()) != null) {
final File file = file(directory, entry);
if (!entry.isDirectory()) {
ByteStreams.copy(stream, file, buffer, -1L);
}
stream.closeEntry();
}
}
protected static void zip(
final StringBuilder path,
final File file,
final FileFilter filter,
final ZipOutputStream stream,
final byte[] buffer)
throws IOException {
if (path == null) {
throw new NullPointerException("path");
}
if (file == null) {
throw new NullPointerException("file");
}
if (!file.exists()) {
throw new IllegalArgumentException("file does not exist");
}
if (filter == null) {
// throw new NullPointerException("filter");
}
if (stream == null) {
throw new NullPointerException("stream");
}
if (buffer == null) {
throw new NullPointerException("buffer");
}
if (buffer.length == 0) {
throw new IllegalArgumentException("buffer.length(" + buffer.length + ") == 0");
}
if (file.isDirectory()) {
stream.putNextEntry(new ZipEntry(path + file.getName() + "/"));
stream.closeEntry();
final int start = path.length();
path.append(file.getName()).append("/");
for (File child : file.listFiles()) {
if (filter != null && !filter.accept(child)) {
continue;
}
zip(path, child, filter, stream, buffer);
}
path.delete(start, path.length());
} else {
stream.putNextEntry(new ZipEntry(path + file.getName()));
ByteStreams.copy(file, stream, buffer, -1L);
stream.closeEntry();
}
}
/**
* Unzips entries from {@code zipfile} into {@code directory}.
*
* @param zipfile source zip file
* @param directory target directory to which entries going to be unzipped
* @param buffer
* @throws IOException if an I/O error occurs.
*/
public static void unzip(final ZipFile zipfile, final File directory, final byte[] buffer)
throws IOException {
if (zipfile == null) {
throw new NullPointerException("zipfile");
}
if (directory == null) {
throw new NullPointerException("directory");
}
if (!directory.isDirectory()) {
throw new IllegalArgumentException("directory doesn't exist");
}
if (buffer == null) {
throw new NullPointerException("buffer");
}
if (buffer.length == 0) {
throw new IllegalArgumentException("buffer.length(" + buffer.length + ") == 0");
}
final Enumeration<? extends ZipEntry> entries = zipfile.entries();
while (entries.hasMoreElements()) {
final ZipEntry entry = entries.nextElement();
final File file = file(directory, entry);
if (entry.isDirectory()) {
continue;
}
final InputStream input = zipfile.getInputStream(entry);
try {
ByteStreams.copy(input, file, buffer, -1L);
} finally {
input.close();
}
}
}
