package com.gentics.mesh.core.data.i18n;

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import java.util.Locale;
import java.util.PropertyResourceBundle;
import java.util.ResourceBundle;
import java.util.ResourceBundle.Control;

/**
 * Extended {@link Control} which supports utf8 resource bundles.
 */
public class UTF8Control extends Control {

	/**
	 * Create a new resource bundle for the given local and base that supports utf8 encoded properties.
	 * 
	 * @param baseName
	 * @param locale
	 * @param format
	 * @param loader
	 * @param reload
	 * @return Loaded resource bundle
	 */
	public ResourceBundle newBundle(String baseName, Locale locale, String format, ClassLoader loader, boolean reload)
		throws IllegalAccessException, InstantiationException, IOException {
		// The below is a copy of the default implementation.
		String bundleName = toBundleName(baseName, locale);
		String resourceName = toResourceName(bundleName, "properties");
		ResourceBundle bundle = null;
		InputStream stream = null;
		if (reload) {
			URL url = loader.getResource(resourceName);
			if (url != null) {
				URLConnection connection = url.openConnection();
				if (connection != null) {
					connection.setUseCaches(false);
					stream = connection.getInputStream();
				}
			}
		} else {
			stream = loader.getResourceAsStream(resourceName);
		}
		if (stream != null) {
			try {
				// Only this line is changed to make it to read properties files as UTF-8.
				bundle = new PropertyResourceBundle(new InputStreamReader(stream, "UTF-8"));
			} finally {
				stream.close();
			}
		}
		return bundle;
	}
}