org.pentaho.ui.xul.util.ResourceBundleTranslator.java Source code

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Here is the source code for org.pentaho.ui.xul.util.ResourceBundleTranslator.java

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/*!
 * This program is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 * or from the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 * Copyright (c) 2002-2013 Pentaho Corporation..  All rights reserved.
 */

package org.pentaho.ui.xul.util;

import org.apache.commons.lang.StringEscapeUtils;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class ResourceBundleTranslator {

    public static String translate(InputStream input, ResourceBundle bundle) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(input));

        StringBuffer buf = new StringBuffer();
        String line;
        while ((line = reader.readLine()) != null) {
            buf.append(line);
        }

        String template = buf.toString();

        Pattern pattern = Pattern.compile("\\$\\{([^\\}]*)\\}"); //$NON-NLS-1$

        Matcher m = pattern.matcher(template);
        StringBuffer sb = new StringBuffer();
        while (m.find()) {
            m.appendReplacement(sb, ResourceBundleTranslator.getTranslatedValue(m.group(1), bundle));
        }
        m.appendTail(sb);

        return sb.toString();
    }

    public static String translate(String input, ResourceBundle bundle) throws IOException {

        String template = input;

        Pattern pattern = Pattern.compile("\\$\\{([^\\}]*)\\}"); //$NON-NLS-1$

        Matcher m = pattern.matcher(template);
        StringBuffer sb = new StringBuffer();
        while (m.find()) {
            m.appendReplacement(sb, ResourceBundleTranslator.getTranslatedValue(m.group(1), bundle));
        }
        m.appendTail(sb);

        return sb.toString();
    }

    private static String getTranslatedValue(String key, ResourceBundle bundle) {
        try {
            return StringEscapeUtils.escapeXml(bundle.getString(key));
        } catch (MissingResourceException e) {
            // return unchanged so later ResourceBundles can have a go at it
            return "\\${" + key + "}"; //$NON-NLS-1$ //$NON-NLS-2$
        }
    }
}