public static void copyJarResourcesRecursively(File destination, JarURLConnection jarConnection) {
JarFile jarFile;
try {
jarFile = jarConnection.getJarFile();
} catch (Exception e) {
_.die("Failed to get jar file)");
return;
}
Enumeration<JarEntry> em = jarFile.entries();
while (em.hasMoreElements()) {
JarEntry entry = em.nextElement();
if (entry.getName().startsWith(jarConnection.getEntryName())) {
String fileName = StringUtils.removeStart(entry.getName(), jarConnection.getEntryName());
if (!fileName.equals("/")) { // exclude the directory
InputStream entryInputStream = null;
try {
entryInputStream = jarFile.getInputStream(entry);
FileUtils.copyInputStreamToFile(entryInputStream, new File(destination, fileName));
} catch (Exception e) {
die("Failed to copy resource: " + fileName);
} finally {
if (entryInputStream != null) {
try {
entryInputStream.close();
} catch (Exception e) {
}
}
}
}
}
}
}
/**
* Returns the name of the jar file main class, or null if no "Main-Class" manifest attributes was
* defined.
*/
public String getMainClassName() throws IOException {
URL u = new URL("jar", "", url + "!/");
JarURLConnection uc = (JarURLConnection) u.openConnection();
if (uc.getEntryName() == null) System.out.println("No Entry Name");
else System.out.println(uc.getEntryName());
if (uc == null) System.out.println("Connection is null");
Attributes attr = uc.getMainAttributes();
if (attr != null) System.out.println("Attributes has size: " + attr.size());
// output(attr);
return attr != null ? attr.getValue(Attributes.Name.MAIN_CLASS) : null;
}
public static boolean copyJarResourcesRecursively(
final File destDir, final JarURLConnection jarConnection) throws IOException {
final JarFile jarFile = jarConnection.getJarFile();
for (final Enumeration<JarEntry> e = jarFile.entries(); e.hasMoreElements(); ) {
final JarEntry entry = e.nextElement();
if (entry.getName().startsWith(jarConnection.getEntryName())) {
final String filename = entry.getName();
final File f = new File(destDir, filename);
if (!entry.isDirectory()) {
final InputStream entryInputStream = jarFile.getInputStream(entry);
if (!FileUtils.copyStream(entryInputStream, f)) {
return false;
}
entryInputStream.close();
} else {
if (!FileUtils.ensureDirectoryExists(f)) {
throw new IOException("Could not create directory: " + f.getAbsolutePath());
}
}
}
}
return true;
}
/**
* Return the directories in a jar URI, relative to the jar entry, if any. . Jar URLS have several
* forms, the most common being: <code>jar:file:///foo/bar.jar/!/bif/baz</code>, which means that
* the jar file /foo/bar.jar has a directory or file name bif/baz. If such a file is passed to
* this method, then any directories in the jar file directory bif/baz will be returned.
*
* @param jarURL The Jar URL for which we are to look for directories.
* @return An list of Strings that name the directories
* @exception IOException If opening the connection fails or if getting the jar file from the
* connection fails
*/
public static List<String> jarURLDirectories(URL jarURL) throws IOException {
List<String> directories = new LinkedList<String>();
JarURLConnection connection = (JarURLConnection) (jarURL.openConnection());
String jarEntryName = connection.getEntryName();
if (jarEntryName.endsWith("/")) {
jarEntryName = jarEntryName.substring(0, jarEntryName.length() - 1);
}
JarFile jarFile = connection.getJarFile();
Enumeration<JarEntry> entries = jarFile.entries();
while (entries.hasMoreElements()) {
JarEntry entry = entries.nextElement();
String name = entry.getName();
int jarEntryIndex = name.indexOf(jarEntryName + "/");
int jarEntrySlashIndex = jarEntryIndex + jarEntryName.length() + 1;
int nextSlashIndex = name.indexOf("/", jarEntrySlashIndex);
int lastSlashIndex = name.indexOf("/", jarEntrySlashIndex);
if (jarEntryIndex > -1
&& jarEntrySlashIndex > -1
&& nextSlashIndex > -1
&& nextSlashIndex == lastSlashIndex
&& nextSlashIndex == name.length() - 1
&& entry.isDirectory()) {
directories.add(name);
}
}
jarFile.close();
return directories;
}
private List<JavaFileObject> processJar(URL packageFolderURL) {
List<JavaFileObject> result = new ArrayList<JavaFileObject>();
try {
String jarUri = packageFolderURL.toExternalForm().split("!")[0];
JarURLConnection jarConn = (JarURLConnection) packageFolderURL.openConnection();
String rootEntryName = jarConn.getEntryName();
int rootEnd = rootEntryName.length() + 1;
Enumeration<JarEntry> entryEnum = jarConn.getJarFile().entries();
while (entryEnum.hasMoreElements()) {
JarEntry jarEntry = entryEnum.nextElement();
String name = jarEntry.getName();
if (name.startsWith(rootEntryName)
&& name.indexOf('/', rootEnd) == -1
&& name.endsWith(CLASS_FILE_EXTENSION)) {
URI uri = URI.create(jarUri + "!/" + name);
String binaryName = name.replaceAll("/", ".");
binaryName = binaryName.replaceAll(CLASS_FILE_EXTENSION + "$", "");
result.add(new CustomJavaFileObject(binaryName, uri));
}
}
} catch (Exception e) {
throw new RuntimeException("Wasn't able to open " + packageFolderURL + " as a jar file", e);
}
return result;
}
/**
* Extracts the entry name for the grammar from a given JAR or ZIP URL. The name is either given
* in the JAR entry part of the URL, or it is taken to be the name of the archive file.
*
* @param url the URL to be parsed; guaranteed to be a JAR or ZIP
* @return the name; non-null
* @throws IllegalArgumentException if no name can be found according to the above rules
* @throws IOException if the URL cannot be opened
*/
private String extractEntryName(URL url) throws IOException {
String result;
JarURLConnection connection = (JarURLConnection) url.openConnection();
result = connection.getEntryName();
if (result == null) {
result = FileType.getPureName(new File(connection.getJarFileURL().getPath()));
}
return result;
}