From 700ee732786754d03865cad2d317b3f4a7f163be Mon Sep 17 00:00:00 2001
From: =?utf8?q?David=20=E2=80=98Bombe=E2=80=99=20Roden?=
 <bombe@pterodactylus.net>
Date: Fri, 22 Oct 2010 11:46:22 +0200
Subject: [PATCH] Add template plugin that extracts the page number from the
 request.

---
 .../pterodactylus/sone/template/GetPagePlugin.java | 64 ++++++++++++++++++++++
 1 file changed, 64 insertions(+)
 create mode 100644 src/main/java/net/pterodactylus/sone/template/GetPagePlugin.java

diff --git a/src/main/java/net/pterodactylus/sone/template/GetPagePlugin.java b/src/main/java/net/pterodactylus/sone/template/GetPagePlugin.java
new file mode 100644
index 0000000..c57932e
--- /dev/null
+++ b/src/main/java/net/pterodactylus/sone/template/GetPagePlugin.java
@@ -0,0 +1,64 @@
+/*
+ * Sone - GetPagePlugin.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.template;
+
+import java.util.Map;
+
+import net.pterodactylus.sone.web.page.Page.Request;
+import net.pterodactylus.util.template.DataProvider;
+import net.pterodactylus.util.template.Plugin;
+
+/**
+ * Extracts a page number from a {@link Request}’s parameters and stores it in a
+ * {@link DataProvider}.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public class GetPagePlugin implements Plugin {
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public void execute(DataProvider dataProvider, Map<String, String> parameters) {
+		String requestKey = parameters.get("request");
+		String parameter = parameters.get("parameter");
+		String pageKey = parameters.get("key");
+
+		if (requestKey == null) {
+			requestKey = "request";
+		}
+		if (parameter == null) {
+			parameter = "page";
+		}
+		if (pageKey == null) {
+			pageKey = "page";
+		}
+
+		Request request = (Request) dataProvider.getData(requestKey);
+		String pageString = request.getHttpRequest().getParam(parameter);
+		int page = 0;
+		try {
+			page = Integer.parseInt(pageString);
+		} catch (NumberFormatException nfe1) {
+			/* ignore. */
+		}
+		dataProvider.setData(pageKey, page);
+	}
+
+}
-- 
2.7.4