--- /dev/null
+// ClassAttribute.java\r
+// $Id: ClassAttribute.java,v 1.2 2010/06/15 17:53:11 smhuang Exp $\r
+// (c) COPYRIGHT MIT and INRIA, 1996.\r
+// Please first read the full copyright statement in file COPYRIGHT.html\r
+\r
+package org.w3c.tools.resources.upgrade ;\r
+\r
+import java.io.DataInputStream;\r
+import java.io.DataOutputStream;\r
+import java.io.IOException;\r
+\r
+/**\r
+ * The generic description of an ClassAttribute.\r
+ */\r
+\r
+public class ClassAttribute extends Attribute {\r
+\r
+ /**\r
+ * Make a String out of a ClassAttribute value.\r
+ * The default <code>toString</code> method on classes doesn't work\r
+ * for that purpose, since it will preceed the class name with\r
+ * a <strong>class</strong> keyword.\r
+ * @return The String name of the class.\r
+ */\r
+\r
+ public String stringify(Object value) {\r
+ return ((value instanceof Class) \r
+ ? ((Class) value).getName()\r
+ : "<unknown-class>");\r
+ }\r
+\r
+ /**\r
+ * Is the given object a valid ClassAttribute value ?\r
+ * @param obj The object to test.\r
+ * @return A boolean <strong>true</strong> if okay.\r
+ */\r
+\r
+ public boolean checkValue(Object obj) {\r
+ return (obj instanceof Class);\r
+ }\r
+\r
+ /**\r
+ * Get the number of bytes required to save that attribute value.\r
+ * @param The value about to be pickled.\r
+ * @return The number of bytes needed to pickle that value.\r
+ */\r
+\r
+ public final int getPickleLength(Object value) {\r
+ String str = ((Class) value).getName();\r
+ int strlen = str.length() ;\r
+ int utflen = 0 ;\r
+\r
+ for (int i = 0 ; i < strlen ; i++) {\r
+ int c = str.charAt(i);\r
+ if ((c >= 0x0001) && (c <= 0x007F)) {\r
+ utflen++;\r
+ } else if (c > 0x07FF) {\r
+ utflen += 3;\r
+ } else {\r
+ utflen += 2;\r
+ }\r
+ }\r
+ return utflen + 2 ;\r
+ }\r
+\r
+ /**\r
+ * Pickle an integer to the given output stream.\r
+ * @param out The output stream to pickle to.\r
+ * @param obj The object to pickle.\r
+ * @exception IOException If some IO error occured.\r
+ */\r
+\r
+ public void pickle(DataOutputStream out, Object c) \r
+ throws IOException\r
+ {\r
+ out.writeUTF(((Class) c).getName()) ;\r
+ }\r
+\r
+ /**\r
+ * Unpickle an integer from the given input stream.\r
+ * @param in The input stream to unpickle from.\r
+ * @return An instance of Integer.\r
+ * @exception IOException If some IO error occured.\r
+ */\r
+\r
+ public Object unpickle (DataInputStream in) \r
+ throws IOException\r
+ {\r
+ String clsname = in.readUTF() ;\r
+ try {\r
+ return Class.forName(clsname);\r
+ //Added by Jeff Huang\r
+ //TODO: FIXIT\r
+ } catch (Exception ex) {\r
+ throw new IOException ("Unable to restore class "\r
+ + clsname\r
+ + ": "\r
+ + ex.getMessage()) ;\r
+ }\r
+ }\r
+\r
+ public ClassAttribute(String name, Class def, Integer flags) {\r
+ super(name, def, flags) ;\r
+ this.type = "java.lang.Class";\r
+ }\r
+\r
+}\r