2 * Sone - L10nFilter.java - Copyright © 2010–2019 David Roden
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 package net.pterodactylus.sone.freenet;
20 import java.text.MessageFormat;
21 import java.util.ArrayList;
22 import java.util.List;
23 import java.util.Locale;
26 import javax.annotation.Nonnull;
28 import net.pterodactylus.util.template.Filter;
29 import net.pterodactylus.util.template.TemplateContext;
31 import freenet.l10n.BaseL10n;
34 * {@link Filter} implementation replaces {@link String} values with their
35 * translated equivalents.
37 public class L10nFilter implements Filter {
39 private final BaseL10n l10n;
41 public L10nFilter(BaseL10n l10n) {
49 public String format(TemplateContext templateContext, Object data, Map<String, Object> parameters) {
50 List<Object> parameterValues = getParameters(data, parameters);
51 String text = getText(data);
52 if (parameterValues.isEmpty()) {
53 return l10n.getString(text);
55 return new MessageFormat(l10n.getString(text), new Locale(l10n.getSelectedLanguage().shortCode)).format(parameterValues.toArray());
59 private String getText(Object data) {
60 return (data instanceof L10nText) ? ((L10nText) data).getText() : String.valueOf(data);
64 private List<Object> getParameters(Object data, Map<String, Object> parameters) {
65 if (data instanceof L10nText) {
66 return ((L10nText) data).getParameters();
68 List<Object> parameterValues = new ArrayList<>();
69 int parameterIndex = 0;
70 while (parameters.containsKey(String.valueOf(parameterIndex))) {
71 Object value = parameters.get(String.valueOf(parameterIndex));
72 parameterValues.add(value);
75 return parameterValues;