X-Git-Url: http://git.phpeclipse.com

diff --git a/archive/net.sourceforge.phpeclipse.quantum.sql/src/com/quantum/util/JarUtil.java b/archive/net.sourceforge.phpeclipse.quantum.sql/src/com/quantum/util/JarUtil.java
new file mode 100644
index 0000000..c30bdad
--- /dev/null
+++ b/archive/net.sourceforge.phpeclipse.quantum.sql/src/com/quantum/util/JarUtil.java
@@ -0,0 +1,93 @@
+package com.quantum.util;
+
+import java.io.File;
+import java.io.IOException;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.sql.Driver;
+import java.util.ArrayList;
+import java.util.Enumeration;
+import java.util.Hashtable;
+import java.util.List;
+import java.util.jar.JarEntry;
+import java.util.jar.JarFile;
+
+
+/**
+ * @author BC Holmes
+ */
+public class JarUtil {
+
+    private static Hashtable classLoaderCache = new Hashtable();
+	
+	public static Driver loadDriver(String driverFile, String className) {
+		Driver result = null;
+		try {
+        	File file = new File(driverFile);
+        	if (file.exists() && file.isFile()) {
+        		URLClassLoader loader = getURLClassLoader(file);
+		        Class driverClass = loader.loadClass(className);
+	            try {
+	            	result = (Driver) driverClass.newInstance();
+	            } catch (ClassCastException e) {
+	            }
+	        }
+		} catch (MalformedURLException e) {
+		} catch (ClassNotFoundException e) {
+		} catch (InstantiationException e) {
+		} catch (IllegalAccessException e) {
+		}
+		return result;
+	}
+	
+	public static String[] getAllDriverNames(String driverFile) {
+		List list = new ArrayList();
+		try {
+			File file = new File(driverFile);
+			URLClassLoader loader = getURLClassLoader(file);
+			JarFile jar = new JarFile(file);
+			for (Enumeration e = jar.entries(); e.hasMoreElements(); ) {
+				JarEntry entry = (JarEntry) e.nextElement();
+				String className = getClassNameFromFileName(entry.getName());
+				if (className != null) {
+					try {
+						Class driverClass = loader.loadClass(className);
+						if (Driver.class.isAssignableFrom(driverClass)) {
+							list.add(className);
+						}
+					} catch (ClassNotFoundException ex) {
+					}
+				}
+			}
+		} catch (IOException e) {
+		}
+		return (String[]) list.toArray(new String[list.size()]);
+	}
+	
+	private static String getClassNameFromFileName(String name) {
+		String result = null;
+		if (name.endsWith(".class")) {
+			result = name.substring(0, name.length()-6).replace('/', '.').replace('\\', '.' );
+		}
+		return result;
+	}
+
+	/**
+	 * @param file
+	 * @return
+	 * @throws MalformedURLException
+	 */
+	private static URLClassLoader getURLClassLoader(File file) throws MalformedURLException {
+		String driverFile = file.getAbsolutePath();
+		URLClassLoader loader =
+		    (URLClassLoader) classLoaderCache.get(driverFile);
+		if (loader == null) {
+		    URL urls[] = new URL[1];
+		    urls[0] = file.toURL();
+		    loader = new URLClassLoader(urls);
+		    classLoaderCache.put(driverFile, loader);
+		}
+		return loader;
+	}
+}