Add template factory for Sone templates.

diff --git a/src/main/java/net/pterodactylus/sone/web/SoneTemplateFactory.java b/src/main/java/net/pterodactylus/sone/web/SoneTemplateFactory.java
new file mode 100644 (file)
index 0000000..51a6691
--- /dev/null
+++ b/src/main/java/net/pterodactylus/sone/web/SoneTemplateFactory.java
@@ -0,0 +1,147 @@
+/*
+ * shortener - L10nTemplateFactory.java - Copyright © 2010 David Roden
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.pterodactylus.sone.web;
+
+import java.io.Reader;
+import java.text.DateFormat;
+import java.util.Date;
+import java.util.Map;
+
+import net.pterodactylus.util.template.DataProvider;
+import net.pterodactylus.util.template.DefaultTemplateFactory;
+import net.pterodactylus.util.template.Filter;
+import net.pterodactylus.util.template.ReflectionAccessor;
+import net.pterodactylus.util.template.Template;
+import net.pterodactylus.util.template.TemplateFactory;
+import freenet.l10n.BaseL10n;
+
+/**
+ * {@link TemplateFactory} implementation that creates {@link Template}s that
+ * have an {@link L10nFilter} added.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public class SoneTemplateFactory implements TemplateFactory {
+
+       /** The base template factory. */
+       private final TemplateFactory templateFactory;
+
+       /** The L10n filter. */
+       private final L10nFilter l10nFilter;
+
+       /** The date filter. */
+       private final DateFilter dateFilter;
+
+       /** The reflection accessor. */
+       private final ReflectionAccessor reflectionAccessor = new ReflectionAccessor();
+
+       /**
+        * Creates a new Freetalk template factory.
+        *
+        * @param l10n
+        *            The L10n handler
+        */
+       public SoneTemplateFactory(BaseL10n l10n) {
+               this(DefaultTemplateFactory.getInstance(), l10n);
+       }
+
+       /**
+        * Creates a new Freetalk template factory, retrieving templates from the
+        * given template factory, then adding all filters used by Freetalk to them.
+        *
+        * @param templateFactory
+        *            The base template factory
+        * @param l10n
+        *            The L10n handler
+        */
+       public SoneTemplateFactory(TemplateFactory templateFactory, BaseL10n l10n) {
+               this.templateFactory = templateFactory;
+               this.l10nFilter = new L10nFilter(l10n);
+               this.dateFilter = new DateFilter();
+       }
+
+       /**
+        * {@inheritDoc}
+        */
+       @Override
+       public Template createTemplate(Reader templateSource) {
+               Template template = templateFactory.createTemplate(templateSource);
+               template.addAccessor(Object.class, reflectionAccessor);
+               template.addFilter("l10n", l10nFilter);
+               template.addFilter("date", dateFilter);
+               return template;
+       }
+
+       /**
+        * {@link Filter} implementation replaces {@link String} values with their
+        * translated equivalents.
+        *
+        * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+        */
+       public static class L10nFilter implements Filter {
+
+               /** The l10n handler. */
+               private final BaseL10n l10n;
+
+               /**
+                * Creates a new L10n filter.
+                *
+                * @param l10n
+                *            The l10n handler
+                */
+               public L10nFilter(BaseL10n l10n) {
+                       this.l10n = l10n;
+               }
+
+               /**
+                * {@inheritDoc}
+                */
+               @Override
+               public String format(DataProvider dataProvider, Object data, Map<String, String> parameters) {
+                       return l10n.getString(String.valueOf(data));
+               }
+
+       }
+
+       /**
+        * {@link Filter} implementation that formats a date. The date may be given
+        * either as a {@link Date} or a {@link Long} object.
+        *
+        * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+        */
+       public static class DateFilter implements Filter {
+
+               /** The date formatter. */
+               private final DateFormat dateFormat = DateFormat.getInstance();
+
+               /**
+                * {@inheritDoc}
+                */
+               @Override
+               public String format(DataProvider dataProvider, Object data, Map<String, String> parameters) {
+                       if (data instanceof Date) {
+                               return dateFormat.format((Date) data);
+                       } else if (data instanceof Long) {
+                               return dateFormat.format(new Date((Long) data));
+                       }
+                       return "";
+               }
+
+       }
+
+}