play.libs.Files Maven / Gradle / Ivy
package play.libs;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;
import org.apache.commons.io.FileUtils;
import play.exceptions.UnexpectedException;
/**
* Files utils
*/
public class Files {
/**
* Just copy a file
* @param from
* @param to
*/
public static void copy(File from, File to) {
if (from.getAbsolutePath().equals(to.getAbsolutePath())) {
return;
}
FileInputStream is = null;
FileOutputStream os = null;
try {
is = new FileInputStream(from);
os = new FileOutputStream(to);
int read;
byte[] buffer = new byte[10000];
while ((read = is.read(buffer)) > 0) {
os.write(buffer, 0, read);
}
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
try {
is.close();
} catch (Exception ignored) {
}
try {
os.close();
} catch (Exception ignored) {
}
}
}
/**
* Just delete a file. If the file is a directory, it's work.
* @param file The file to delete
*/
public static boolean delete(File file) {
if (file.isDirectory()) {
return deleteDirectory(file);
} else {
return file.delete();
}
}
/**
* Recursively delete a directory.
*/
public static boolean deleteDirectory(File path) {
if (path.exists()) {
File[] files = path.listFiles();
for (File file: files) {
if (file.isDirectory()) {
deleteDirectory(file);
} else {
file.delete();
}
}
}
return (path.delete());
}
public static boolean copyDir(File from, File to) {
try {
FileUtils.copyDirectory(from, to);
return true;
} catch (IOException e) {
return false;
}
}
public static void unzip(File from, File to) {
try {
String outDir = to.getCanonicalPath();
ZipFile zipFile = new ZipFile(from);
Enumeration entries = zipFile.entries();
while (entries.hasMoreElements()) {
ZipEntry entry = entries.nextElement();
if (entry.isDirectory()) {
new File(to, entry.getName()).mkdir();
continue;
}
File f = new File(to, entry.getName());
if(!f.getCanonicalPath().startsWith(outDir)) {
throw new IOException("Corrupted zip file");
}
f.getParentFile().mkdirs();
FileOutputStream os = new FileOutputStream(f);
IO.copy(zipFile.getInputStream(entry), os);
os.close();
}
zipFile.close();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
public static void zip(File directory, File zipFile) {
try {
FileOutputStream os = new FileOutputStream(zipFile);
ZipOutputStream zos = new ZipOutputStream(os);
zipDirectory(directory, directory, zos);
zos.close();
os.close();
} catch (Exception e) {
throw new UnexpectedException(e);
}
}
static void zipDirectory(File root, File directory, ZipOutputStream zos) throws Exception {
for (File item : directory.listFiles()) {
if (item.isDirectory()) {
zipDirectory(root, item, zos);
} else {
byte[] readBuffer = new byte[2156];
int bytesIn;
FileInputStream fis = new FileInputStream(item);
String path = item.getAbsolutePath().substring(root.getAbsolutePath().length() + 1);
ZipEntry anEntry = new ZipEntry(path);
zos.putNextEntry(anEntry);
while ((bytesIn = fis.read(readBuffer)) != -1) {
zos.write(readBuffer, 0, bytesIn);
}
fis.close();
}
}
}
}