/**
* Save a compiled class and associated classes to a jar file.
*
* <p>With a packageName = "" and recursive = false, it will save clazz and any classes compiled
* from the same source (I think); this is probably what you want.
*
* @param packageName package name prefix to search for classes, or "" for all
* @param clazz a class that has been previously compiled by this bridge
* @param mainClazz a class that will be installed as the "Main-Class" of a runnable jar
* @param outStream output stream
* @param recursive whether to retrieve classes from rest of the the JavaFileManager hierarchy
* @throws FileNotFoundException
* @throws IOException
*/
public void saveToJar(
String packageName,
Class<?> clazz,
Class<?> mainClazz,
OutputStream outStream,
boolean recursive)
throws IOException {
JavaFileManager manager = fileManagerCache.get(clazz);
List<JavaFileObject> list = new ArrayList<JavaFileObject>();
for (JavaFileObject obj :
manager.list(
StandardLocation.CLASS_PATH,
packageName,
Collections.singleton(JavaFileObject.Kind.CLASS),
false)) list.add(obj);
if (list.iterator().hasNext()) {
Manifest manifest = new Manifest();
manifest.getMainAttributes().put(Attributes.Name.MANIFEST_VERSION, "1.0");
if (mainClazz != null) {
manifest.getMainAttributes().put(Attributes.Name.MAIN_CLASS, mainClazz.getName());
}
manifest
.getMainAttributes()
.put(new Attributes.Name("X-Rascal-Saved-Class"), clazz.getName());
JarOutputStream target = new JarOutputStream(outStream, manifest);
JarEntry entry = new JarEntry("META-INF/");
target.putNextEntry(entry);
Collection<String> dirs = new ArrayList<String>();
for (JavaFileObject o : list) {
String path = o.toUri().getPath().replace(".", "/");
makeJarDirs(target, dirs, path);
entry = new JarEntry(path + ".class");
entry.setTime(o.getLastModified());
target.putNextEntry(entry);
try (InputStream stream = o.openInputStream()) {
byte[] buffer = new byte[8192];
int c = stream.read(buffer);
while (c > -1) {
target.write(buffer, 0, c);
c = stream.read(buffer);
}
}
target.closeEntry();
}
if (mainClazz != null) {
String name = mainClazz.getName();
String path = name.replace(".", "/") + ".class";
String dir = path.substring(0, path.lastIndexOf('/'));
StringBuilder dirTmp = new StringBuilder(dir.length());
for (String d : dir.split("/")) {
dirTmp.append(d);
dirTmp.append("/");
String tmp = dirTmp.toString();
if (!dirs.contains(tmp)) {
dirs.add(tmp);
entry = new JarEntry(tmp);
target.putNextEntry(entry);
}
}
entry = new JarEntry(path);
target.putNextEntry(entry);
try (InputStream stream = mainClazz.getClassLoader().getResourceAsStream(path)) {
byte[] buffer = new byte[8192];
int c = stream.read(buffer);
while (c > -1) {
target.write(buffer, 0, c);
c = stream.read(buffer);
}
}
target.closeEntry();
}
target.close();
}
}
