private static void compileAbilities(File javaDir, File classDir) {
if (!javaDir.exists()) return;
// Make ready a new list of files to compile.
List<File> toCompile = getSourceFilesToCompile(javaDir, classDir);
// No files to compile?
if (toCompile.isEmpty()) {
return;
}
// Notify the console.
Messenger.info("Compiling abilities: " + fileListToString(toCompile));
// Get the compiler
JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
StandardJavaFileManager fileManager = compiler.getStandardFileManager(null, null, null);
// Generate some JavaFileObjects
try {
Iterable<? extends JavaFileObject> compilationUnits =
fileManager.getJavaFileObjectsFromFiles(toCompile);
// Include the MobArena.jar on the classpath, and set the destination folder.
List<String> options = Arrays.asList("-classpath", classpath, "-d", classDir.getPath());
// Set up the compilation task.
JavaCompiler.CompilationTask task =
compiler.getTask(null, fileManager, null, options, null, compilationUnits);
// Call the task.
task.call();
// And close the file manager.
fileManager.close();
} catch (Exception e) {
Messenger.severe("Compilation step failed...");
e.printStackTrace();
}
}
/**
* Load the custom abilities from the specified directory.
*
* @param classDir a directory of .class (and/or .java) files
*/
public static void loadCustomAbilities(File classDir) {
if (abilities == null) abilities = new HashMap<String, Class<? extends Ability>>();
// Grab the source directory.
File javaDir = new File(classDir, "src");
/* If the source directory exists, we need to verify that the system
* has a java compiler before attempting anything. If not, we need to
* skip the compiling step and just go straight to loading in the
* existing class files. */
if (javaDir.exists()) {
if (ToolProvider.getSystemJavaCompiler() != null) {
compileAbilities(javaDir, classDir);
} else {
Messenger.warning(
"Found plugins/MobArena/abilities/src/ folder, but no Java compiler. The source files will not be compiled!");
}
}
// Load all the custom abilities.
loadClasses(classDir);
}