/**
* Evaluates a script.
*
* @param script string representation of the script to evaluate.
* @param sourceName the name of the evaluated script.
* @return evaluated object.
* @throws IOException if the script couldn't be retrieved.
*/
public Object evaluate(final String script, final String sourceName) {
if (script == null) {
throw new IllegalArgumentException("script cannot be null");
}
try {
return context.evaluateString(scope, script, sourceName, 1, null);
} catch (final JavaScriptException e) {
LOG.error("JavaScriptException occured: " + e.getMessage());
throw e;
}
}
int getStatus(Exception e) {
if (e instanceof JavaScriptException) {
JavaScriptException je = (JavaScriptException) e;
Object value = ((ScriptableObject) je.getValue()).get("message", null);
if (value != null) {
String status = Utility.find(value.toString(), "^\\d\\d\\d\\b");
if (status != null) return Integer.parseInt(status);
}
}
return 500;
}
/**
* Evaluates a script from a reader.
*
* @param reader {@link Reader} of the script to evaluate.
* @param sourceName the name of the evaluated script.
* @return evaluated object.
* @throws IOException if the script couldn't be retrieved.
*/
public Object evaluate(final Reader reader, final String sourceName) throws IOException {
if (reader == null) {
throw new IllegalArgumentException("reader cannot be null");
}
try {
return context.evaluateReader(scope, reader, sourceName, 1, null);
} catch (final JavaScriptException e) {
LOG.error("JavaScriptException occured: " + e.getMessage());
throw e;
} finally {
reader.close();
}
}
@Override
public void service(HttpServletRequest request, HttpServletResponse response) throws IOException {
response.setContentType("text/html");
String path = request.getRequestURI();
// use routes if present
if (this.routes != null) {
String route = this.routes.getProperty(path);
if (route != null) {
path = route;
// then we also need to replace the HttpServletRequest.getRequestURI method
// request = getRequestWrapper(request, path);
}
}
if (path.endsWith("/")) path += "index";
String source = null;
// check for changes first
if (this.debug && contextCache.checkForChanges()) {
if (this.pageInfoCache != null) this.pageInfoCache.clear();
}
ScriptContext context = contextCache.getContext();
try {
serve(request, response, context, path, null);
} catch (Exception e) {
int status = getStatus(e);
response.setStatus(status);
response.setContentType("text/plain");
System.out.println(e.toString());
if (errorPath != null && status >= 500) {
try {
serve(request, response, context, errorPath, e);
} catch (Exception f) {
e.printStackTrace(response.getWriter());
response.getWriter().write("ERROR IN ERROR HANDLER PAGE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
f.printStackTrace(response.getWriter());
}
} else if (debug && status == 500) {
e.printStackTrace(response.getWriter());
} else if (e instanceof JavaScriptException) {
JavaScriptException je = (JavaScriptException) e;
response.getWriter().write(je.getValue().toString());
} else {
response.getWriter().write(e.getMessage());
}
} finally {
contextCache.returnContext(context);
}
}
/**
* Executes an arbitrary expression.<br>
* It fails if the expression throws a JsAssertException.<br>
* It fails if the expression throws a RhinoException.<br>
* Code from JsTester (http://jstester.sf.net/)
*/
public Object eval(String expr) {
Object value = null;
try {
value = context.evaluateString(globalScope, expr, "", 1, null);
} catch (JavaScriptException jse) {
Scriptable jsAssertException = (Scriptable) globalScope.get("currentException", globalScope);
jse.printStackTrace();
String message = (String) jsAssertException.get("message", jsAssertException);
if (message != null) {
fail(message);
}
} catch (RhinoException re) {
fail(re.getMessage());
}
return value;
}
/**
* Call a Javascript function, identified by name, on a set of arguments. Optionally, expect it to
* throw an exception.
*
* @param expectingException
* @param functionName
* @param args
* @return
*/
public Object rhinoCallExpectingException(
final Object expectingException, final String functionName, final Object... args) {
Object fObj = rhinoScope.get(functionName, rhinoScope);
if (!(fObj instanceof Function)) {
throw new RuntimeException("Missing test function " + functionName);
}
Function function = (Function) fObj;
try {
return function.call(rhinoContext, rhinoScope, rhinoScope, args);
} catch (RhinoException angryRhino) {
if (expectingException != null && angryRhino instanceof JavaScriptException) {
JavaScriptException jse = (JavaScriptException) angryRhino;
Assert.assertEquals(jse.getValue(), expectingException);
return null;
}
String trace = angryRhino.getScriptStackTrace();
Assert.fail("JavaScript error: " + angryRhino.toString() + " " + trace);
} catch (JavaScriptAssertionFailed assertion) {
Assert.fail(assertion.getMessage());
}
return null;
}
/** process exception */
private void processJavaScriptException(JavaScriptException e) {
Object eValue = e.getValue();
if (eValue instanceof NativeJavaObject) {
eValue = ((NativeJavaObject) eValue).unwrap();
}
boolean isBuildException = eValue instanceof BuildException;
if (isBuildException) {
BuildException be = (BuildException) eValue;
be.setLocation(getLocation());
throw be;
}
}
/**
* Evaluate JavaScript source.
*
* @param cx the current context
* @param filename the name of the file to compile, or null for interactive mode.
*/
private void processSource(Context cx, String filename) {
if (filename == null) {
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
String sourceName = "<stdin>";
int lineno = 1;
boolean hitEOF = false;
do {
int startline = lineno;
System.err.print("js> ");
System.err.flush();
try {
String source = "";
// Collect lines of source to compile.
while (true) {
String newline;
newline = in.readLine();
if (newline == null) {
hitEOF = true;
break;
}
source = source + newline + "\n";
lineno++;
// Continue collecting as long as more lines
// are needed to complete the current
// statement. stringIsCompilableUnit is also
// true if the source statement will result in
// any error other than one that might be
// resolved by appending more source.
if (cx.stringIsCompilableUnit(source)) {
break;
}
}
Object result = cx.evaluateString(this, source, sourceName, startline, null);
if (result != Context.getUndefinedValue()) {
System.err.println(Context.toString(result));
}
} catch (WrappedException we) {
// Some form of exception was caught by JavaScript and
// propagated up.
System.err.println(we.getWrappedException().toString());
we.printStackTrace();
} catch (EvaluatorException ee) {
// Some form of JavaScript error.
System.err.println("js: " + ee.getMessage());
} catch (JavaScriptException jse) {
// Some form of JavaScript error.
System.err.println("js: " + jse.getMessage());
} catch (IOException ioe) {
System.err.println(ioe.toString());
}
if (quitting) {
// The user executed the quit() function.
break;
}
} while (!hitEOF);
System.err.println();
} else {
FileReader in = null;
try {
in = new FileReader(filename);
} catch (FileNotFoundException ex) {
Context.reportError("Couldn't open file \"" + filename + "\".");
return;
}
try {
// Here we evalute the entire contents of the file as
// a script. Text is printed only if the print() function
// is called.
cx.evaluateReader(this, in, filename, 1, null);
} catch (WrappedException we) {
System.err.println(we.getWrappedException().toString());
we.printStackTrace();
} catch (EvaluatorException ee) {
System.err.println("js: " + ee.getMessage());
} catch (JavaScriptException jse) {
System.err.println("js: " + jse.getMessage());
} catch (IOException ioe) {
System.err.println(ioe.toString());
} finally {
try {
in.close();
} catch (IOException ioe) {
System.err.println(ioe.toString());
}
}
}
}
