Custom method

[Daniel Jipa]

Hello, 

Is there a possibility to create custom methods. I've created a parser just like I18NParser but I still get a method not defined error. Maybe I need to register that parser 

in the application somewhere. 

Is there a sample code available? Google searches bring me no luck.

Thank you

[green]

Are you talking about custom directive? Maybe you want to take a look at https://github.com/greenlaw110/play-rythm/tree/master/src/org/rythmengine/play/parsers for sample parser code and also https://github.com/greenlaw110/play-rythm/blob/master/src/org/rythmengine/play/RythmPlugin.java#L523 on how to register those parsers

If you want to create transformers, please refer to http://rythmengine.org/doc/user_defined_transformer.md

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[Daniel Jipa]

I am trying to integrate Rythm in Pippo and for this I need to do a custom method so I can use in the templates. Something like this:

<script src=@webjarsAt("jquery/1.11.1/jquery.min.js")></script>

I made a class WebjarsAtParser extending KeywordParserFactory and also a PippoDialect with buildin classes WebjarsAtParser.class

But when I want to register the parser I get an error:

Exception in thread "main" java.lang.IllegalArgumentException: Cannot find dialect by Id: pippo

at org.rythmengine.internal.dialect.DialectManager.registerExternalParsers(DialectManager.java:134)

at org.rythmengine.internal.ExtensionManager.registerUserDefinedParsers(ExtensionManager.java:84)

at ro.danjee.App.main(App.java:25)

Code looks like this:

Map<String, Object> conf = new HashMap<String, Object>();

Rythm.init(conf);

RythmEngine engine = Rythm.engine();

IParserFactory[] factories = {new WebjarsAtParser()};

engine.extensionManager().registerUserDefinedParsers(factories).registerUserDefinedParsers(PippoDialect.ID, factories);

It seems that DialectManager class has some fixed dialects and I cannot push mine.

I'm pretty sure there is something I miss.

Thank you, 

Daniel 

[Daniel Jipa]

I need something like what you do with @def but to be declare în Java code and to be available în all templates. Is this possible?

[Daniel Jipa]

[green]

Don't understand why you need a dialect. Is registering your parser into existing dialect like what is documented at https://github.com/greenlaw110/play-rythm/blob/master/src/org/rythmengine/play/RythmPlugin.java#L523 okay to you?

[Daniel Jipa]

Thank you for your help!
Indeed, I did not need a custom dialect for that. I' be had a second look at the verbatim parser that didn't use dialects.
But I still cannot call a custom method defined in java from template. Is there a documentation for that?
Thanks

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[green]

Have you registered your parser? 

[Daniel Jipa]

Yes, I have.

Thank you for your help!

[green]

Can you please send out your code initializing Rythm Engine?

[Daniel Jipa]

Map<String, Object> conf = new HashMap<String, Object>();

conf.put("home.template", "/home/cory/testrythm/src/main/resources/");

Rythm.init(conf);
RythmEngine engine = Rythm.engine();

engine.extensionManager().registerUserDefinedParsers(new WebjarsAtParser());

Map<String, Object> params = new HashMap<String, Object>();
params.put("who", "World");
params.put("greeting", "My greetings!");

System.out.println(engine.render("/home/cory/testrythm/src/main/resources/hello.html", params));

And the parser is

public class WebjarsAtParser extends KeywordParserFactory {
    private static final Pattern P = Pattern.compile(
            getRegex(), Pattern.DOTALL);

    private static String getRegex(){
        return "((@webjarsAt)(\\(\\\"(.*)\\\",\\\"(js|css)\\\"\\))(.*))";
    }

    private static String getTestRegex(){
        return "@webjarsAt(\"test\",\"css\")</h5>\n</body>\n</html>";
    }

    public static void main(String[] args) {
        //@webjarsAt("test","css")</h5></body></html>


        String s = getTestRegex();
        Matcher m = P.matcher(s);
        if (m.matches()) {
            for (int i = 1; i <= m.groupCount(); i++){
                System.out.println(m.group(i));
            }
        }
    }

    public IParser create(IContext ctx) {
        return new ParserBase(ctx) {

            public Token go() {
                String remain = remain();
                Matcher m = P.matcher(remain);
                if (m.matches()) {
                    for (int i = 1; i <= m.groupCount(); i++){
                        System.out.println(i + ">>>" + m.group(i));
                    }
                    step(m.group(1).length());
                    return new CodeToken("p(org.rythmengine.utils.S.raw(\"" +getLine(m.group(3), m.group(4))+"\"));", ctx()).pline();
                } else {
                    return null;
                }
            }

        };
    }

    private String getLine(String uri, String type){
        if (type.equals("css")){
            String ret = "<link href=\"${webjarsAt('"+uri+"')}\" rel=\"stylesheet\">";
//            System.out.println(ret);
            return ret;
        }else if (type.equals("js")){
            return "<script src=\"${webjarsAt('"+uri+"')}\"></script>";
        }
        return null;
    }

    @Override
    public IKeyword keyword() {
        return ExtendedKeyword.WEBJARSAT;
    }

    @Override
    protected String patternStr() {
        return null;
    }
}


public enum ExtendedKeyword implements IKeyword{
    WEBJARSAT, PUBLICAT;

    private final String s;

    private ExtendedKeyword() {
        this.s = name().toLowerCase();
    }

    private ExtendedKeyword(String s) {
        this.s = (null == s) ? name().toLowerCase() : s;
    }

    @Override
    public String toString() {
        return s;
    }

    public boolean isRegexp() {
        return !s.equals(name().toLowerCase());
    }
}

I still got to work on my parser on the regex part. I got confused with the error because it doesn't gave me a hint that the regex could be invalid, it only told me the 

method is undefined.

Thank you