private static GremlinScriptContext convertContext(final ScriptContext context) {
if (context instanceof GremlinScriptContext) return (GremlinScriptContext) context;
else {
GremlinScriptContext context2 = new GremlinScriptContext();
for (int scope : context.getScopes()) {
context2.setBindings(context.getBindings(scope), scope);
}
return context2;
}
}
/* Utility functions for the binding classes */
protected static ScriptEngine createScriptEngine(String language) throws ScriptException {
ScriptEngineManager manager = new ScriptEngineManager();
ScriptEngine engine = manager.getEngineByName(language);
ScriptContext scriptContext = engine.getContext();
Bindings bindings = scriptContext.getBindings(ScriptContext.ENGINE_SCOPE);
scriptContext.setBindings(new JSFBindings(bindings), ScriptContext.ENGINE_SCOPE);
return engine;
}
private static void typeCastContextBindings(final ScriptContext context) {
for (int scope : context.getScopes()) {
Bindings bindings = context.getBindings(scope);
if (!(bindings instanceof VariableLibrary) && null != bindings) {
for (String key : bindings.keySet()) {
Object object = bindings.get(key);
if (object instanceof Atom) {
bindings.put(key, ((Atom) object).getValue());
}
}
}
}
}
public Object eval(final Reader reader, final ScriptContext context) {
String line;
Iterable result;
StringBuilder script = new StringBuilder();
BufferedReader bReader = new BufferedReader(reader);
try {
// read whole script before evaluation
while ((line = bReader.readLine()) != null) {
script.append(line).append("\n");
}
// evaluate script
result = this.evaluate(script.toString(), convertContext(context));
// flushing output streams
context.getWriter().flush();
typeCastContextBindings(context);
} catch (SyntaxErrorException e) {
throw e;
} catch (Exception e) {
throw new RuntimeException(e.getMessage());
}
return result;
}
PageInfo getPageInfo(ScriptContext context, String path) throws IOException {
PageInfo info = null;
if (pageInfoCache != null) info = this.pageInfoCache.get(path);
if (info == null) {
String file = prefix + path + suffix;
String actualPath = FileHelper.findRecursive(file);
String source = FileHelper.read(actualPath);
Object object = context.evaluate(source, path);
info = new PageInfo((BaseFunction) object, actualPath);
if (pageInfoCache != null) pageInfoCache.put(path, info);
}
return info;
}
void serve(
HttpServletRequest request,
HttpServletResponse response,
ScriptContext context,
String path,
Exception error)
throws IOException {
PageInfo info = getPageInfo(context, path);
context.put("request", request);
context.put("response", response);
context.put("path", path);
context.put("servlet", this);
context.put("__filename", info.path);
context.put("__pagepath", getPagePath(info.path));
if (error != null) context.put("error", error);
context.call(info.function);
}
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);
}
}
}
public Object eval(ScriptContext context) throws ScriptException {
return eval(((LuajContext) context).globals, context.getBindings(ScriptContext.ENGINE_SCOPE));
}
