public static void main(String[] args) {
try {
ZipFile zipFile = new ZipFile(testDirName + zipFileName);
ZipEntry ze = zipFile.getEntry(zipEntryName);
byte[] digest1 = getZipDigest(zipFile, ze, true);
System.out.println("Digest1: " + Base64Util.encode(digest1));
byte[] digest2 = getZipDigest(zipFile, ze, false);
System.out.println("Digest2: " + Base64Util.encode(digest2));
} catch (Exception ex) {
System.out.println("Error: " + ex.toString());
ex.printStackTrace(System.out);
}
}
public static String[] getZipList(String zipFile) throws ZipException, IOException {
File file = new File(zipFile);
ZipFile zip = new ZipFile(file);
Enumeration<? extends ZipEntry> zipFileEntries = zip.entries();
ArrayList<String> files = new ArrayList<String>();
// Process each entry
while (zipFileEntries.hasMoreElements()) {
// grab a zip file entry
ZipEntry entry = (ZipEntry) zipFileEntries.nextElement();
String currentEntry = entry.getName();
files.add(currentEntry);
}
return files.toArray(new String[files.size()]);
}
public static void extract(String zipFile, String newPath, boolean overwrite)
throws ZipException, IOException {
File file = new File(zipFile);
ZipFile zip = new ZipFile(file);
new File(newPath).mkdir();
Enumeration<? extends ZipEntry> zipFileEntries = zip.entries();
// Process each entry
while (zipFileEntries.hasMoreElements()) {
// grab a zip file entry
ZipEntry entry = (ZipEntry) zipFileEntries.nextElement();
String currentEntry = entry.getName();
File destFile = new File(newPath, currentEntry);
// destFile = new File(newPath, destFile.getName());
File destinationParent = destFile.getParentFile();
// create the parent directory structure if needed
destinationParent.mkdirs();
if (!entry.isDirectory()) {
if (!overwrite && destFile.exists()) continue;
BufferedInputStream is = new BufferedInputStream(zip.getInputStream(entry));
int currentByte;
// establish buffer for writing file
byte data[] = new byte[BUFFER];
// write the current file to disk
FileOutputStream fos = new FileOutputStream(destFile);
BufferedOutputStream dest = new BufferedOutputStream(fos, BUFFER);
// read and write until last byte is encountered
while ((currentByte = is.read(data, 0, BUFFER)) != -1) {
dest.write(data, 0, currentByte);
}
close(dest);
close(is);
}
}
}
private static byte[] getZipDigest(ZipFile zipFile, ZipEntry ze, boolean zip)
throws ZipException, IOException, Exception {
System.out.println("z2e: " + ze.toString());
InputStream is = null;
if (zip) is = zipFile.getInputStream(ze);
else is = new FileInputStream(testDirName + ze.toString());
MessageDigest sha = MessageDigest.getInstance("SHA-1");
byte[] buf = new byte[1024];
int count;
while ((count = is.read(buf)) != -1) {
System.out.println("Count: " + count);
sha.update(buf, 0, count);
}
is.close();
return sha.digest();
}