X-Git-Url: https://git.argeo.org/?a=blobdiff_plain;f=org.argeo.osgi.boot%2Fsrc%2Forg%2Fargeo%2Fosgi%2Fboot%2FOsgiBootUtils.java;fp=org.argeo.osgi.boot%2Fsrc%2Forg%2Fargeo%2Fosgi%2Fboot%2FOsgiBootUtils.java;h=20891c7f9ef3ada558496662063117755102d743;hb=575dfe19b8516b1213b6d56d9f34fc3bcdb62026;hp=0000000000000000000000000000000000000000;hpb=a43dfffeac351b6446ec469578d54fcca94986a5;p=lgpl%2Fargeo-commons.git

diff --git a/org.argeo.osgi.boot/src/org/argeo/osgi/boot/OsgiBootUtils.java b/org.argeo.osgi.boot/src/org/argeo/osgi/boot/OsgiBootUtils.java
new file mode 100644
index 000000000..20891c7f9
--- /dev/null
+++ b/org.argeo.osgi.boot/src/org/argeo/osgi/boot/OsgiBootUtils.java
@@ -0,0 +1,142 @@
+/*
+ * Copyright (C) 2007-2012 Argeo GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.argeo.osgi.boot;
+
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import java.util.StringTokenizer;
+
+import org.osgi.framework.Bundle;
+
+/** Utilities, mostly related to logging. */
+public class OsgiBootUtils {
+	/** ISO8601 (as per log4j) and difference to UTC */
+	private static DateFormat dateFormat = new SimpleDateFormat(
+			"yyyy-MM-dd HH:mm:ss,SSS Z");
+
+	public static void info(Object obj) {
+		System.out.println("# OSGiBOOT      # " + dateFormat.format(new Date())
+				+ " # " + obj);
+	}
+
+	public static void debug(Object obj) {
+		System.out.println("# OSGiBOOT DBG  # " + dateFormat.format(new Date())
+				+ " # " + obj);
+	}
+
+	public static void warn(Object obj) {
+		System.out.println("# OSGiBOOT WARN # " + dateFormat.format(new Date())
+				+ " # " + obj);
+	}
+
+	/**
+	 * Gets a property value
+	 * 
+	 * @return null when defaultValue is ""
+	 */
+	public static String getProperty(String name, String defaultValue) {
+		final String value;
+		if (defaultValue != null)
+			value = System.getProperty(name, defaultValue);
+		else
+			value = System.getProperty(name);
+
+		if (value == null || value.equals(""))
+			return null;
+		else
+			return value;
+	}
+
+	public static String getProperty(String name) {
+		return getProperty(name, null);
+	}
+
+	public static String stateAsString(int state) {
+		switch (state) {
+		case Bundle.UNINSTALLED:
+			return "UNINSTALLED";
+		case Bundle.INSTALLED:
+			return "INSTALLED";
+		case Bundle.RESOLVED:
+			return "RESOLVED";
+		case Bundle.STARTING:
+			return "STARTING";
+		case Bundle.ACTIVE:
+			return "ACTIVE";
+		case Bundle.STOPPING:
+			return "STOPPING";
+		default:
+			return Integer.toString(state);
+		}
+	}
+
+	/**
+	 * @return ==0: versions are identical, <0: tested version is newer, >0:
+	 *         currentVersion is newer.
+	 */
+	public static int compareVersions(String currentVersion,
+			String testedVersion) {
+		List cToks = new ArrayList();
+		StringTokenizer cSt = new StringTokenizer(currentVersion, ".");
+		while (cSt.hasMoreTokens())
+			cToks.add(cSt.nextToken());
+		List tToks = new ArrayList();
+		StringTokenizer tSt = new StringTokenizer(currentVersion, ".");
+		while (tSt.hasMoreTokens())
+			tToks.add(tSt.nextToken());
+	
+		int comp = 0;
+		comp: for (int i = 0; i < cToks.size(); i++) {
+			if (tToks.size() <= i) {
+				// equals until then, tested shorter
+				comp = 1;
+				break comp;
+			}
+	
+			String c = (String) cToks.get(i);
+			String t = (String) tToks.get(i);
+	
+			try {
+				int cInt = Integer.parseInt(c);
+				int tInt = Integer.parseInt(t);
+				if (cInt == tInt)
+					continue comp;
+				else {
+					comp = (cInt - tInt);
+					break comp;
+				}
+			} catch (NumberFormatException e) {
+				if (c.equals(t))
+					continue comp;
+				else {
+					comp = c.compareTo(t);
+					break comp;
+				}
+			}
+		}
+	
+		if (comp == 0 && tToks.size() > cToks.size()) {
+			// equals until then, current shorter
+			comp = -1;
+		}
+	
+		return comp;
+	}
+
+}