Object evalScript(
String script,
StringBuffer scriptOutput,
boolean captureOutErr,
HttpServletRequest request,
HttpServletResponse response)
throws EvalError {
// Create a PrintStream to capture output
ByteArrayOutputStream baos = new ByteArrayOutputStream();
PrintStream pout = new PrintStream(baos);
// Create an interpreter instance with a null inputstream,
// the capture out/err stream, non-interactive
Interpreter bsh = new Interpreter(null, pout, pout, false);
// set up interpreter
bsh.set("bsh.httpServletRequest", request);
bsh.set("bsh.httpServletResponse", response);
// Eval the text, gathering the return value or any error.
Object result = null;
String error = null;
PrintStream sout = System.out;
PrintStream serr = System.err;
if (captureOutErr) {
System.setOut(pout);
System.setErr(pout);
}
try {
// Eval the user text
result = bsh.eval(script);
} finally {
if (captureOutErr) {
System.setOut(sout);
System.setErr(serr);
}
}
pout.flush();
scriptOutput.append(baos.toString());
return result;
}
