com.ovea.tajin.framework.i18nL10n.JsonI18NBundlerProvider.groovy Maven / Gradle / Ivy

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/**
 * Copyright (C) 2011 Ovea 
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.ovea.tajin.framework.i18nL10n

import com.ovea.tajin.framework.core.Resource
import groovy.json.JsonSlurper

import java.util.logging.Level
import java.util.logging.Logger

/**
 * @author Mathieu Carbou ([email protected])
 */
public class JsonI18NBundlerProvider extends I18NBundlerProviderSkeleton {

    private static final Logger LOGGER = Logger.getLogger(JsonI18NBundlerProvider.class.getName());

    JsonI18NBundlerProvider(String bundleName, int maximumSize, long expirationSeconds) {
        super(bundleName, maximumSize, expirationSeconds)
    }

    @Override
    I18NBundle newBundle(String bundleName, Locale locale) {
        return new JsonI18NBundle(bundleName, locale, missingKeyBehaviour, load(locale))
    }

    private Properties load(Locale locale) {
        Properties all = new Properties();
        load(bundleName, all, "");
        String str = locale.toString();
        if (str.length() >= 2)
            load(bundleName, all, str.substring(0, 2));
        if (str.length() >= 5)
            load(bundleName, all, str.substring(0, 5));
        return all;
    }

    String loadAsjson(Resource resource) { resource.getText() }

    private void load(String bundleName, Properties target, String lc) {
        Resource resource = null;
        try {
            String b = bundleName;
            int pos = b.lastIndexOf('.');
            if (pos == -1) {
                throw new IllegalArgumentException("Illegal bundle name: extension needed");
            }
            resource = Resource.parse(b.substring(0, pos) + (lc.length() > 0 ? "_" + lc : lc) + b.substring(pos));
            String content = loadAsjson(resource);
            if (content.length() > 0) {
                //noinspection unchecked
                parse(target, (Map) new JsonSlurper().parseText(content), "");
            }
        } catch (RuntimeException ignored) {
            if (LOGGER.isLoggable(Level.FINE))
                LOGGER.fine("Cannot find resource " + resource);
        }
    }

    private static void parse(Properties target, Map object, String completeKey) {
        for (String key : object.keySet()) {
            Object o = object.get(key);
            String ck = completeKey.length() > 0 ? completeKey + "." + key : key;
            if (o instanceof Map) {
                //noinspection unchecked
                parse(target, (Map) o, ck);
            } else if (o instanceof Collection) {
                target.put(ck, o.toString());
            } else if (o != null) {
                target.put(ck, String.valueOf(o));
            }
            // else o == null => ignore property
        }
    }

}