Examples with ScriptEngine javax.script.ScriptEngine used on opensource projects

Example 76 with ScriptEngine

use of javax.script.ScriptEngine in project opennms by OpenNMS.

the class OSGiScriptEngineManager method getEngineByExtension.

public ScriptEngine getEngineByExtension(String extension) {
    // TODO this is a hack to deal with context class loader issues
    ScriptEngine engine = null;
    for (ScriptEngineManager manager : classLoaders.keySet()) {
        ClassLoader old = Thread.currentThread().getContextClassLoader();
        Thread.currentThread().setContextClassLoader(classLoaders.get(manager));
        engine = manager.getEngineByExtension(extension);
        Thread.currentThread().setContextClassLoader(old);
        if (engine != null)
            break;
    }
    return engine;
}

Example 77 with ScriptEngine

use of javax.script.ScriptEngine in project opennms by OpenNMS.

the class OSGiScriptEngineManager method getEngineByName.

public ScriptEngine getEngineByName(String shortName) {
    // TODO this is a hack to deal with context class loader issues
    for (ScriptEngineManager manager : classLoaders.keySet()) {
        ClassLoader old = Thread.currentThread().getContextClassLoader();
        Thread.currentThread().setContextClassLoader(classLoaders.get(manager));
        ScriptEngine engine = manager.getEngineByName(shortName);
        Thread.currentThread().setContextClassLoader(old);
        if (engine != null) {
            return new OSGiScriptEngine(engine, new OSGiScriptEngineFactory(engine.getFactory(), classLoaders.get(manager)));
        }
    }
    return null;
}

Example 78 with ScriptEngine

use of javax.script.ScriptEngine in project MantaroBot by Mantaro.

the class OwnerCmd method eval.

@Subscribe
public void eval(CommandRegistry cr) {
    // has no state
    JavaEvaluator javaEvaluator = new JavaEvaluator();
    Map<String, Evaluator> evals = new HashMap<>();
    evals.put("js", (event, code) -> {
        ScriptEngine script = new ScriptEngineManager().getEngineByName("nashorn");
        script.put("mantaro", MantaroBot.getInstance());
        script.put("db", MantaroData.db());
        script.put("jda", event.getJDA());
        script.put("event", event);
        script.put("guild", event.getGuild());
        script.put("channel", event.getChannel());
        try {
            return script.eval(String.join("\n", "load(\"nashorn:mozilla_compat.js\");", "imports = new JavaImporter(java.util, java.io, java.net);", "(function() {", "with(imports) {", code, "}", "})()"));
        } catch (Exception e) {
            return e;
        }
    });
    evals.put("bsh", (event, code) -> {
        Interpreter interpreter = new Interpreter();
        try {
            interpreter.set("mantaro", MantaroBot.getInstance());
            interpreter.set("db", MantaroData.db());
            interpreter.set("jda", event.getJDA());
            interpreter.set("event", event);
            interpreter.set("guild", event.getGuild());
            interpreter.set("channel", event.getChannel());
            return interpreter.eval(String.join("\n", "import *;", code));
        } catch (Exception e) {
            return e;
        }
    });
    evals.put("java", (event, code) -> {
        try {
            CompilationResult r = javaEvaluator.compile().addCompilerOptions("-Xlint:unchecked").source("Eval", JAVA_EVAL_IMPORTS + "\n\n" + "public class Eval {\n" + "   public static Object run(GuildMessageReceivedEvent event) {\n" + "       try {\n" + "           return null;\n" + "       } finally {\n" + "           " + (code + ";").replaceAll(";{2,}", ";") + "\n" + "       }\n" + "   }\n" + "}").execute();
            EvalClassLoader ecl = new EvalClassLoader();
            r.getClasses().forEach((name, bytes) -> ecl.define(bytes));
            return ecl.loadClass("Eval").getMethod("run", GuildMessageReceivedEvent.class).invoke(null, event);
        } catch (CompilationException e) {
            StringBuilder sb = new StringBuilder("\n");
            if (e.getCompilerOutput() != null)
                sb.append(e.getCompilerOutput());
            if (!e.getDiagnostics().isEmpty()) {
                if (sb.length() > 0)
                    sb.append("\n\n");
                e.getDiagnostics().forEach(d -> sb.append(d).append('\n'));
            }
            return new Error(sb.toString()) {

                @Override
                public String toString() {
                    return getMessage();
                }
            };
        } catch (Exception e) {
            return e;
        }
    });
    cr.register("eval", new SimpleCommand(Category.OWNER, CommandPermission.OWNER) {

        @Override
        protected void call(GuildMessageReceivedEvent event, String content, String[] args) {
            Evaluator evaluator = evals.get(args[0]);
            if (evaluator == null) {
                onHelp(event);
                return;
            }
            String[] values = SPLIT_PATTERN.split(content, 2);
            if (values.length < 2) {
                onHelp(event);
                return;
            }
            String v = values[1];
            Object result = evaluator.eval(event, v);
            boolean errored = result instanceof Throwable;
            event.getChannel().sendMessage(new EmbedBuilder().setAuthor("Evaluated " + (errored ? "and errored" : "with success"), null, event.getAuthor().getAvatarUrl()).setColor(errored ? Color.RED : Color.GREEN).setDescription(result == null ? "Executed successfully with no objects returned" : ("Executed " + (errored ? "and errored: " : "successfully and returned: ") + result.toString())).setFooter("Asked by: " + event.getAuthor().getName(), null).build()).queue();
        }

        @Override
        public MessageEmbed help(GuildMessageReceivedEvent event) {
            return helpEmbed(event, "Eval cmd").setDescription("**Evaluates stuff (A: js/bsh)**").build();
        }
    });
}

Example 79 with ScriptEngine

use of javax.script.ScriptEngine in project bamboobsc by billchen198318.

the class ScriptExpressionUtils method executeRenjin.

private static void executeRenjin(String scriptExpression, Map<String, Object> results, Map<String, Object> parameters) throws Exception {
    ScriptEngine engine = buildRenjinScriptEngine();
    if (parameters != null) {
        for (Map.Entry<String, Object> entry : parameters.entrySet()) {
            engine.put(entry.getKey(), entry.getValue());
        }
    }
    engine.eval(scriptExpression);
    if (results != null) {
        for (Map.Entry<String, Object> entry : results.entrySet()) {
            Object res = engine.get(entry.getKey());
            if (res instanceof AbstractAtomicVector) {
                if (((AbstractAtomicVector) res).length() > 0) {
                    entry.setValue(((AbstractAtomicVector) res).getElementAsObject(0));
                }
            } else {
                entry.setValue(res);
            }
        }
    }
}

Example 80 with ScriptEngine

use of javax.script.ScriptEngine in project bamboobsc by billchen198318.

the class ScriptExpressionUtils method buildRenjinScriptEngine.

public static ScriptEngine buildRenjinScriptEngine() {
    if (renjinScriptEngineTL.get() != null) {
        return renjinScriptEngineTL.get();
    }
    ScriptEngine engine = manager.getEngineByName("Renjin");
    renjinScriptEngineTL.set(engine);
    return engine;
}