/**
* Get an entry from the ZIP, trying both types of slashes.
*
* @param file
* @return
*/
private ZipEntry getEntry(String file) {
ZipEntry entry = zip.getEntry(file);
if (entry != null) {
return entry;
}
return zip.getEntry(file.replace("/", "\\"));
}
public List<File> unpack(File archiveFile, File targetDir) throws ArchiveException {
// 首先判断下对应的目标文件是否存在，如存在则执行删除
if (false == archiveFile.exists()) {
throw new ArchiveException(String.format("[%s] not exist", archiveFile.getAbsolutePath()));
}
if (false == targetDir.exists() && false == NioUtils.create(targetDir, false, 3)) {
throw new ArchiveException(
String.format("[%s] not exist and create failed", targetDir.getAbsolutePath()));
}
List<File> result = new ArrayList<File>();
ZipFile zipFile = null;
try {
zipFile = new ZipFile(archiveFile);
Enumeration entries = zipFile.entries();
while (entries.hasMoreElements()) {
// entry
ZipEntry entry = (ZipEntry) entries.nextElement();
String entryName = entry.getName();
// target
File targetFile = new File(targetDir, entryName);
NioUtils.create(targetFile.getParentFile(), false, 3); // 尝试创建父路径
InputStream input = null;
OutputStream output = null;
try {
output = new FileOutputStream(targetFile);
input = zipFile.getInputStream(entry);
NioUtils.copy(input, output);
} finally {
IOUtils.closeQuietly(input);
IOUtils.closeQuietly(output);
}
result.add(targetFile);
}
} catch (Exception e) {
throw new ArchiveException(e);
} finally {
if (zipFile != null) {
try {
zipFile.close();
} catch (IOException ex) {
}
}
}
return result;
}
/**
* Get the input stream for a chunk file.
*
* @param name
* @return
* @throws IOException
* @throws DataException
*/
@Override
@SuppressWarnings("unchecked")
protected InputStream getInputStream(String name, String worldname)
throws IOException, DataException {
// Detect subfolder for the world's files
if (folder != null) {
if (!folder.equals("")) {
name = folder + "/" + name;
}
} else {
Pattern pattern = Pattern.compile(".*\\.mcr$");
// World pattern
Pattern worldPattern = Pattern.compile(worldname + "\\$");
for (Enumeration<? extends ZipEntry> e = zip.entries(); e.hasMoreElements(); ) {
ZipEntry testEntry = (ZipEntry) e.nextElement();
// Check for world
if (worldPattern.matcher(worldname).matches()) {
// Check for file
if (pattern.matcher(testEntry.getName()).matches()) {
folder = testEntry.getName().substring(0, testEntry.getName().lastIndexOf("/"));
name = folder + "/" + name;
break;
}
}
}
// Check if world is found
if (folder == null) {
throw new MissingWorldException("Target world is not present in ZIP.", worldname);
}
}
ZipEntry entry = getEntry(name);
if (entry == null) {
throw new MissingChunkException();
}
try {
return zip.getInputStream(entry);
} catch (ZipException e) {
throw new IOException("Failed to read " + name + " in ZIP");
}
}
@Override
@SuppressWarnings("unchecked")
public boolean isValid() {
for (Enumeration<? extends ZipEntry> e = zip.entries(); e.hasMoreElements(); ) {
ZipEntry testEntry = e.nextElement();
if (testEntry.getName().matches(".*\\.mcr$")) {
return true;
}
}
return false;
}
/**
* Close resources.
*
* @throws IOException
*/
@Override
public void close() throws IOException {
zip.close();
}