X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=src%2Fde%2Ftodesbaum%2Fjsite%2Fmain%2FVersion.java;h=2b80c36aa93c8737ae1e606da71f629c59f64dcd;hb=302eb7c9ef9b1b45e41f8dfdeda365be8fb6dfe8;hp=6ef8dbc1ae79553d44411475d26b98e117f6c6e3;hpb=2b8f1e9f36036973fba61d8596189410a0556f99;p=jSite.git

diff --git a/src/de/todesbaum/jsite/main/Version.java b/src/de/todesbaum/jsite/main/Version.java
index 6ef8dbc..2b80c36 100644
--- a/src/de/todesbaum/jsite/main/Version.java
+++ b/src/de/todesbaum/jsite/main/Version.java
@@ -20,15 +20,95 @@
 package de.todesbaum.jsite.main;
 
 /**
- * @author <a href="mailto:droden@gmail.com">David Roden </a>
- * @version $Id$
+ * Container for version information.
+ *
+ * @author David ‘Bombe’ Roden &lt;bombe@freenetproject.org&gt;
  */
-public class Version {
+public class Version implements Comparable<Version> {
+
+	/** The components of the version information. */
+	private final int[] components;
+
+	/**
+	 * Creates a new version container with the given components.
+	 *
+	 * @param components
+	 *            The version components
+	 */
+	public Version(int... components) {
+		this.components = new int[components.length];
+		System.arraycopy(components, 0, this.components, 0, components.length);
+	}
+
+	/**
+	 * Returns the number of version components.
+	 *
+	 * @return The number of version components
+	 */
+	public int size() {
+		return components.length;
+	}
 
-	private static final String VERSION = "0.4.9.7";
+	/**
+	 * Returns the version component with the given index.
+	 *
+	 * @param index
+	 *            The index of the version component
+	 * @return The version component
+	 */
+	public int getComponent(int index) {
+		return components[index];
+	}
+
+	/**
+	 * Parses a version from the given string.
+	 *
+	 * @param versionString
+	 *            The version string to parse
+	 * @return The parsed version, or <code>null</code> if the string could not
+	 *         be parsed
+	 */
+	public static Version parse(String versionString) {
+		String[] componentStrings = versionString.split("\\.");
+		int[] components = new int[componentStrings.length];
+		int index = -1;
+		for (String componentString : componentStrings) {
+			try {
+				components[++index] = Integer.parseInt(componentString);
+			} catch (NumberFormatException nfe1) {
+				return null;
+			}
+		}
+		return new Version(components);
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public String toString() {
+		StringBuilder versionString = new StringBuilder();
+		for (int component : components) {
+			if (versionString.length() != 0) {
+				versionString.append('.');
+			}
+			versionString.append(component);
+		}
+		return versionString.toString();
+	}
 
-	public static final String getVersion() {
-		return VERSION;
+	/**
+	 * {@inheritDoc}
+	 */
+	public int compareTo(Version version) {
+		int lessComponents = Math.min(components.length, version.components.length);
+		for (int index = 0; index < lessComponents; index++) {
+			if (version.components[index] == components[index]) {
+				continue;
+			}
+			return components[index] - version.components[index];
+		}
+		return components.length - version.components.length;
 	}
 
 }