public static void writeFile(String dir, String fileName, String content) {
try {
File f = new File(dir, fileName);
FileWriter w = new FileWriter(f);
BufferedWriter bw = new BufferedWriter(w);
bw.write(content);
bw.close();
w.close();
} catch (IOException ioe) {
System.err.println("can't write file");
ioe.printStackTrace(System.err);
}
}
/**
* Wow! much faster than compiling outside of VM. Finicky though. Had rules called r and modulo.
* Wouldn't compile til I changed to 'a'.
*/
protected boolean compile(String fileName) {
String classpathOption = "-classpath";
String[] args =
new String[] {
"javac",
"-d",
tmpdir,
classpathOption,
tmpdir + pathSep + CLASSPATH,
tmpdir + "/" + fileName
};
String cmdLine =
"javac"
+ " -d "
+ tmpdir
+ " "
+ classpathOption
+ " "
+ tmpdir
+ pathSep
+ CLASSPATH
+ " "
+ fileName;
// System.out.println("compile: "+cmdLine);
File f = new File(tmpdir, fileName);
JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
// DiagnosticCollector<JavaFileObject> diagnostics =
// new DiagnosticCollector<JavaFileObject>();
StandardJavaFileManager fileManager = compiler.getStandardFileManager(null, null, null);
Iterable<? extends JavaFileObject> compilationUnits =
fileManager.getJavaFileObjectsFromFiles(Arrays.asList(f));
Iterable<String> compileOptions =
Arrays.asList(new String[] {"-d", tmpdir, "-cp", tmpdir + pathSep + CLASSPATH});
JavaCompiler.CompilationTask task =
compiler.getTask(null, fileManager, null, compileOptions, null, compilationUnits);
boolean ok = task.call();
try {
fileManager.close();
} catch (IOException ioe) {
ioe.printStackTrace(System.err);
}
// List<String> errors = new ArrayList<String>();
// for (Diagnostic diagnostic : diagnostics.getDiagnostics()) {
// errors.add(
// String.valueOf(diagnostic.getLineNumber())+
// ": " + diagnostic.getMessage(null));
// }
// if ( errors.size()>0 ) {
// System.err.println("compile stderr from: "+cmdLine);
// System.err.println(errors);
// return false;
// }
return ok;
/*
File outputDir = new File(tmpdir);
try {
Process process =
Runtime.getRuntime().exec(args, null, outputDir);
StreamVacuum stdout = new StreamVacuum(process.getInputStream());
StreamVacuum stderr = new StreamVacuum(process.getErrorStream());
stdout.start();
stderr.start();
process.waitFor();
stdout.join();
stderr.join();
if ( stdout.toString().length()>0 ) {
System.err.println("compile stdout from: "+cmdLine);
System.err.println(stdout);
}
if ( stderr.toString().length()>0 ) {
System.err.println("compile stderr from: "+cmdLine);
System.err.println(stderr);
}
int ret = process.exitValue();
return ret==0;
}
catch (Exception e) {
System.err.println("can't exec compilation");
e.printStackTrace(System.err);
return false;
}
*/
}