/**
* Constructor, compiles script, put header in the bindings
*
* @param scriptReader reader containing the script. will be closed.
* @param header the header to be injected in the javascript context
*/
protected AbstractJavascriptFilter(final Reader scriptReader, final HEADER header) {
final ScriptEngineManager manager = new ScriptEngineManager();
/* get javascript engine */
final ScriptEngine engine = manager.getEngineByName("js");
if (engine == null) {
CloserUtil.close(scriptReader);
throw new RuntimeScriptException(
"The embedded 'javascript' engine is not available in java. "
+ "Do you use the SUN/Oracle Java Runtime ?");
}
if (scriptReader == null) {
throw new RuntimeScriptException("missing ScriptReader.");
}
try {
final Compilable compilingEngine = getCompilable(engine);
this.script = compilingEngine.compile(scriptReader);
} catch (ScriptException err) {
throw new RuntimeScriptException("Script error in input", err);
} finally {
CloserUtil.close(scriptReader);
}
/*
* create the javascript bindings and put the file header in that
* context
*/
this.bindings = new SimpleBindings();
this.bindings.put(DEFAULT_HEADER_KEY, header);
}
public Object eval(ScriptEngine engine, String script, ScriptContext context)
throws ScriptException {
if (engine instanceof Compilable && Config.SCRIPT_ALLOW_COMPILATION) {
Compilable eng = (Compilable) engine;
CompiledScript cs = eng.compile(script);
return context != null ? cs.eval(context) : cs.eval();
} else return context != null ? engine.eval(script, context) : engine.eval(script);
}
@Test
public void testCompilable() throws ScriptException {
final Compilable compilableFrege = (Compilable) frege;
final CompiledScript compiled =
compilableFrege.compile("fib = 0 : 1 : zipWith (+) fib (tail fib)");
compiled.eval();
final Object actual = frege.eval("show $ take 6 fib");
final Object expected = "[0, 1, 1, 2, 3, 5]";
assertEquals(expected, actual);
}
public boolean compile() {
String script = getTextAsString();
try {
compiledScript = compiler.compile(script);
} catch (ScriptException e) {
onScriptError(e);
return false;
}
return true;
}
@Test
public void testNashornWithCompile() throws Exception {
ScriptEngineManager engineManager = new ScriptEngineManager();
ScriptEngine engine =
engineManager.getEngineByName(AutomationScriptingConstants.NASHORN_ENGINE);
assertNotNull(engine);
Compilable compiler = (Compilable) engine;
assertNotNull(compiler);
InputStream stream = this.getClass().getResourceAsStream("/testScript" + ".js");
assertNotNull(stream);
String js = IOUtils.toString(stream);
CompiledScript compiled = compiler.compile(new StringReader(js));
engine.put("mapper", new Mapper());
compiled.eval(engine.getContext());
assertEquals(
"1"
+ System.lineSeparator()
+ "str"
+ System.lineSeparator()
+ "[1, 2, {a=1, b=2}]"
+ System.lineSeparator()
+ "{a=1, b=2}"
+ System.lineSeparator()
+ "This is a string"
+ System.lineSeparator()
+ "This is a string"
+ System.lineSeparator()
+ "2"
+ System.lineSeparator()
+ "[A, B, C]"
+ System.lineSeparator()
+ "{a=salut, b=from java}"
+ System.lineSeparator()
+ "done"
+ System.lineSeparator(),
outContent.toString());
}
@Post
@At("/:port/interceptor/request")
public Reply<?> addRequestInterceptor(@Named("port") int port, Request<String> request)
throws IOException, ScriptException {
LegacyProxyServer proxy = proxyManager.get(port);
if (proxy == null) {
return Reply.saying().notFound();
}
if (!(proxy instanceof ProxyServer)) {
return Reply.saying().badRequest();
}
ByteArrayOutputStream baos = new ByteArrayOutputStream();
request.readTo(baos);
ScriptEngineManager mgr = new ScriptEngineManager();
final ScriptEngine engine = mgr.getEngineByName("JavaScript");
Compilable compilable = (Compilable) engine;
final CompiledScript script = compilable.compile(baos.toString());
proxy.addRequestInterceptor(
new RequestInterceptor() {
@Override
public void process(BrowserMobHttpRequest request, Har har) {
Bindings bindings = engine.createBindings();
bindings.put("request", request);
bindings.put("har", har);
bindings.put("log", LOG);
try {
script.eval(bindings);
} catch (ScriptException e) {
LOG.error("Could not execute JS-based response interceptor", e);
}
}
});
return Reply.saying().ok();
}
boolean init_functions() {
GenericDialog gd = new GenericDialog("Fitting Options");
gd.addStringField("Extra Definitions", exdef, 50);
gd.addCheckbox("Weight Using Plot Errors", false);
gd.addStringField("Weighting Equation (y is for data)", weightfunction, 50);
gd.addStringField("Fit_Equation", function, 50);
gd.showDialog();
if (gd.wasCanceled()) {
return false;
}
exdef = gd.getNextString();
boolean errweights = gd.getNextBoolean();
weightfunction = gd.getNextString();
function = gd.getNextString();
// first initialize the weights
weights = new float[tempdata.length];
if (errweights
|| weightfunction.equals("")
|| weightfunction == null
|| weightfunction == "1.0") {
if (errweights) {
for (int i = 0; i < tempdata.length; i++) weights[i] = 1.0f / (errs[i] * errs[i]);
} else {
for (int i = 0; i < tempdata.length; i++) weights[i] = 1.0f;
}
} else {
for (int i = 0; i < tempdata.length; i++) {
String script =
"y =" + tempdata[i] + "; " + "x =" + tempx[i] + "; " + "retval=" + weightfunction + ";";
Double temp = new Double(0.0);
try {
temp = (Double) engine.eval(script);
} catch (Exception e) {
IJ.log(e.getMessage());
}
if (!(temp.isInfinite() || temp.isNaN())) {
weights[i] = temp.floatValue();
}
}
}
// now compile the function script
try {
String script1 = exdef + "; retval=" + function + ";";
cs = ce.compile(script1);
} catch (Exception e) {
IJ.log(e.toString());
return false;
}
return true;
}
/**
* Return a compiled version of the provided script.
*
* @param content the script to compile.
* @param engine the script engine.
* @return the compiled version of the script.
* @throws ScriptException failed to compile the script.
*/
protected CompiledScript getCompiledScript(String content, Compilable engine)
throws ScriptException {
// TODO: add caching
return engine.compile(content);
}
public void executeScript(ScriptEngine engine, File file)
throws FileNotFoundException, ScriptException {
BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(file)));
if (Config.SCRIPT_DEBUG) {
_log.info("Loading Script: " + file.getAbsolutePath());
}
if (Config.SCRIPT_ERROR_LOG) {
String name = file.getAbsolutePath() + ".error.log";
File errorLog = new File(name);
if (errorLog.isFile()) {
errorLog.delete();
}
}
if (engine instanceof Compilable && Config.SCRIPT_ALLOW_COMPILATION) {
ScriptContext context = new SimpleScriptContext();
context.setAttribute(
"mainClass",
getClassForFile(file).replace('/', '.').replace('\\', '.'),
ScriptContext.ENGINE_SCOPE);
context.setAttribute(ScriptEngine.FILENAME, file.getName(), ScriptContext.ENGINE_SCOPE);
context.setAttribute(
"classpath", SCRIPT_FOLDER.getAbsolutePath(), ScriptContext.ENGINE_SCOPE);
context.setAttribute(
"sourcepath", SCRIPT_FOLDER.getAbsolutePath(), ScriptContext.ENGINE_SCOPE);
context.setAttribute(
JythonScriptEngine.JYTHON_ENGINE_INSTANCE, engine, ScriptContext.ENGINE_SCOPE);
setCurrentLoadingScript(file);
ScriptContext ctx = engine.getContext();
try {
engine.setContext(context);
if (Config.SCRIPT_CACHE) {
CompiledScript cs = _cache.loadCompiledScript(engine, file);
cs.eval(context);
} else {
Compilable eng = (Compilable) engine;
CompiledScript cs = eng.compile(reader);
cs.eval(context);
}
} finally {
engine.setContext(ctx);
setCurrentLoadingScript(null);
context.removeAttribute(ScriptEngine.FILENAME, ScriptContext.ENGINE_SCOPE);
context.removeAttribute("mainClass", ScriptContext.ENGINE_SCOPE);
}
} else {
ScriptContext context = new SimpleScriptContext();
context.setAttribute(
"mainClass",
getClassForFile(file).replace('/', '.').replace('\\', '.'),
ScriptContext.ENGINE_SCOPE);
context.setAttribute(ScriptEngine.FILENAME, file.getName(), ScriptContext.ENGINE_SCOPE);
context.setAttribute(
"classpath", SCRIPT_FOLDER.getAbsolutePath(), ScriptContext.ENGINE_SCOPE);
context.setAttribute(
"sourcepath", SCRIPT_FOLDER.getAbsolutePath(), ScriptContext.ENGINE_SCOPE);
setCurrentLoadingScript(file);
try {
engine.eval(reader, context);
} finally {
setCurrentLoadingScript(null);
engine.getContext().removeAttribute(ScriptEngine.FILENAME, ScriptContext.ENGINE_SCOPE);
engine.getContext().removeAttribute("mainClass", ScriptContext.ENGINE_SCOPE);
}
}
}
