Application: gvSIG desktop

package org.gvsig.expressionevaluator.impl.javascripting;

import java.util.Arrays;

import java.util.Collections;

import java.util.List;

import javax.script.ScriptEngine;

import javax.script.ScriptEngineFactory;

/**

 *

 * @author jjdelcerro

 */

public class CosaScriptEngineFactory 

    implements ScriptEngineFactory

    {

    public static final String ENGINE_NAME = "Cosa";

    public static final String ENGINE_VERSION = "1.0.0";

    public static final String LANGUAGE_NAME = "cosa";

    public static final String LANGUAGE_VERSION = "1.0";

    public static final String[] NAMES = new String[] {

        ENGINE_NAME,

        "COSA",

        "cosa"

    };

    public static final String[] FILE_EXTENSIONS = new String[] {

        "cosa"

    };

    public static final String[] MIME_TYPES = new String[] {

       "text/cosa", 

        "application/cosa", 

        "text/x-cosa", 

        "application/x-cosa"

    };

    public CosaScriptEngineFactory() {

    }

    @Override

    public String getEngineName() {

        return ENGINE_NAME;

    }

    @Override

    public String getEngineVersion() {

        return ENGINE_VERSION;

    }

    @Override

    public List<String> getExtensions() {

        return Collections.unmodifiableList(Arrays.asList(FILE_EXTENSIONS));

    }

    @Override

    public String getLanguageName() {

        return LANGUAGE_NAME;

    }

    @Override

    public String getLanguageVersion() {

        return LANGUAGE_VERSION;

    }

    @Override

    public Object getParameter(String key) {

        switch (key) {

            case ScriptEngine.ENGINE:

                return getEngineName();

            case ScriptEngine.ENGINE_VERSION:

                return getEngineVersion();

            case ScriptEngine.NAME:

                return getEngineName();

            case ScriptEngine.LANGUAGE:

                return getLanguageName();

            case ScriptEngine.LANGUAGE_VERSION:

                return getLanguageVersion();

            default:

                return null;

        }

    }

    @Override

    public String getMethodCallSyntax(String obj, String m, String... args) {

        StringBuilder buffer = new StringBuilder();

        buffer.append(String.format("%s.%s(", obj, m));

        int i = args.length;

        for (String arg : args) {

            buffer.append(arg);

            if (i-- > 0) {

                buffer.append(", ");

            }

        }

        buffer.append(")");

        return buffer.toString();

    }

    @Override

    public String getOutputStatement(String toDisplay) {

        StringBuilder buffer = new StringBuilder(toDisplay.length() + 8);

        buffer.append("print('");

        buffer.append(toDisplay.replace("'", "''"));

        buffer.append("')");

        return buffer.toString();

    }

    @Override

    public String getProgram(String... statements) {

        StringBuilder buffer = new StringBuilder();

        for (String statement : statements) {

            buffer.append(statement);

            buffer.append("\n");

        }

        return buffer.toString();

    }

    @Override

    public ScriptEngine getScriptEngine() {

        return new CosaScriptEngine(this);

    }

    @Override

    public List<String> getMimeTypes() {

        return Collections.unmodifiableList(Arrays.asList(MIME_TYPES));

    }

    @Override

    public List<String> getNames() {

        return Collections.unmodifiableList(Arrays.asList(NAMES));

    }

}