Improve OSGi boot(clean up code, documentation)

[lgpl/argeo-commons.git] / osgi / runtime / org.argeo.osgi.boot / src / main / java / org / argeo / osgi / boot / OsgiBootUtils.java

diff --git a/osgi/runtime/org.argeo.osgi.boot/src/main/java/org/argeo/osgi/boot/OsgiBootUtils.java b/osgi/runtime/org.argeo.osgi.boot/src/main/java/org/argeo/osgi/boot/OsgiBootUtils.java
index fa3ecc2b10ca2dd99951a9573b24c991bd270143..461b8e5a782eccf8012aa07b5e2fa8984131e9a0 100644 (file)
--- a/osgi/runtime/org.argeo.osgi.boot/src/main/java/org/argeo/osgi/boot/OsgiBootUtils.java
+++ b/osgi/runtime/org.argeo.osgi.boot/src/main/java/org/argeo/osgi/boot/OsgiBootUtils.java
@@ -18,7 +18,12 @@ package org.argeo.osgi.boot;
 \r
 import java.text.DateFormat;\r
 import java.text.SimpleDateFormat;\r
+import java.util.ArrayList;\r
 import java.util.Date;\r
+import java.util.List;\r
+import java.util.StringTokenizer;\r
+\r
+import org.osgi.framework.Bundle;\r
 \r
 /** Utilities, mostly related to logging. */\r
 public class OsgiBootUtils {\r
@@ -63,4 +68,76 @@ public class OsgiBootUtils {
                return getProperty(name, null);\r
        }\r
 \r
+       public static String stateAsString(int state) {\r
+               switch (state) {\r
+               case Bundle.UNINSTALLED:\r
+                       return "UNINSTALLED";\r
+               case Bundle.INSTALLED:\r
+                       return "INSTALLED";\r
+               case Bundle.RESOLVED:\r
+                       return "RESOLVED";\r
+               case Bundle.STARTING:\r
+                       return "STARTING";\r
+               case Bundle.ACTIVE:\r
+                       return "ACTIVE";\r
+               case Bundle.STOPPING:\r
+                       return "STOPPING";\r
+               default:\r
+                       return Integer.toString(state);\r
+               }\r
+       }\r
+\r
+       /**\r
+        * @return ==0: versions are identical, <0: tested version is newer, >0:\r
+        *         currentVersion is newer.\r
+        */\r
+       public static int compareVersions(String currentVersion,\r
+                       String testedVersion) {\r
+               List cToks = new ArrayList();\r
+               StringTokenizer cSt = new StringTokenizer(currentVersion, ".");\r
+               while (cSt.hasMoreTokens())\r
+                       cToks.add(cSt.nextToken());\r
+               List tToks = new ArrayList();\r
+               StringTokenizer tSt = new StringTokenizer(currentVersion, ".");\r
+               while (tSt.hasMoreTokens())\r
+                       tToks.add(tSt.nextToken());\r
+       \r
+               int comp = 0;\r
+               comp: for (int i = 0; i < cToks.size(); i++) {\r
+                       if (tToks.size() <= i) {\r
+                               // equals until then, tested shorter\r
+                               comp = 1;\r
+                               break comp;\r
+                       }\r
+       \r
+                       String c = (String) cToks.get(i);\r
+                       String t = (String) tToks.get(i);\r
+       \r
+                       try {\r
+                               int cInt = Integer.parseInt(c);\r
+                               int tInt = Integer.parseInt(t);\r
+                               if (cInt == tInt)\r
+                                       continue comp;\r
+                               else {\r
+                                       comp = (cInt - tInt);\r
+                                       break comp;\r
+                               }\r
+                       } catch (NumberFormatException e) {\r
+                               if (c.equals(t))\r
+                                       continue comp;\r
+                               else {\r
+                                       comp = c.compareTo(t);\r
+                                       break comp;\r
+                               }\r
+                       }\r
+               }\r
+       \r
+               if (comp == 0 && tToks.size() > cToks.size()) {\r
+                       // equals until then, current shorter\r
+                       comp = -1;\r
+               }\r
+       \r
+               return comp;\r
+       }\r
+\r
 }\r