Initial code commit

src/sega/a7/CommandServer.java

@@ -0,0 +1,78 @@
+package sega.a7;
+
+import javacard.framework.Util;
+
+/**
+ * Ordinal-to-command dispatcher.
+ */
+public class CommandServer {
+
+    private Command m_ee_noCommand;
+    private Command[] m_ee_list;
+    private short m_ee_listCount;
+
+    public CommandServer() {
+        m_ee_noCommand = null;
+        m_ee_list = new Command[4];
+        m_ee_listCount = 0;
+    }
+
+    public void setNoCommand(Command cmdClass) {
+        m_ee_noCommand = cmdClass;
+    }
+
+    public void attachCommand(Command cmdClass) {
+        if (cmdClass == null) {
+            return;
+        }
+        if (m_ee_listCount >= m_ee_list.length) {
+            Command[] tmp = new Command[(short) (m_ee_list.length * 2)];
+            for (short i = 0; i < m_ee_list.length; i++) {
+                tmp[i] = m_ee_list[i];
+            }
+            m_ee_list = tmp;
+        }
+        m_ee_list[m_ee_listCount] = cmdClass;
+        m_ee_listCount = (short) (m_ee_listCount + 1);
+    }
+
+    public short findCommand(short cmd) {
+        for (short i = 0; i < m_ee_listCount; i++) {
+            if (cmd == m_ee_list[i].getCmd_ee()) {
+                return i;
+            }
+        }
+        return -1;
+    }
+
+    public boolean select() {
+        boolean ret = true;
+        for (short i = 0; i < m_ee_listCount; i++) {
+            if (!m_ee_list[i].select()) {
+                ret = false;
+            }
+        }
+        return ret;
+    }
+
+    public short execute(byte[] data, short dataOffset, short dataLength,
+                         byte[] dst, short dstOffset, short dstLength) {
+        short cmd = -1;
+        if (data != null && dataOffset >= 0 && dataLength >= AppConfig.HEADER_SIZE
+                && dataOffset <= (short) (data.length - AppConfig.HEADER_SIZE)) {
+            cmd = Util.getShort(data,
+                    (short) (dataOffset + AppConfig.CMD_OFFSET));
+        }
+
+        short index = findCommand(cmd);
+        if (index >= 0) {
+            return m_ee_list[index].execute(data, dataOffset, dataLength,
+                    dst, dstOffset, dstLength);
+        }
+        if (m_ee_noCommand != null) {
+            return m_ee_noCommand.execute(data, dataOffset, dataLength,
+                    dst, dstOffset, dstLength);
+        }
+        return -1;
+    }
+}