finish encoding: SelfEncodingBase

src/main/java/packet/CPacket.java

@@ -1,5 +1,10 @@
 package packet;
 
+import component.IdentifierWrapper;
+import component.Payload;
+import component.TTL;
+import encoding.*;
+
 /*
  * @Author: Wang Feng
  * @Description:
@@ -27,6 +32,79 @@ package packet;
 //                 }
 //             }
 //
-public class CPacket {
+public class CPacket implements InteractWithField, IEncodingAble {
+    private MINPacket minPacket;
+    private TTL ttl;
+    private Payload payload;
+    private String flatIdentifier; // 推式包拥有一个扁平的标识
 
+    public  CPacket(){
+        minPacket=new MINPacket();
+        ttl=new TTL();
+        payload=new Payload();
+    }
+
+    /**
+     * 将 CPacket 的各项属性填充到 MINPacket 中定义的对应分区当中
+     * @Description:
+     * //	1. 主要填充标识区、只读区和可变区
+     * @return
+     */
+    @Override
+    public boolean fillDataToFields() {
+        // 可变区 => 受保护区（无）
+
+        // 填充可变区 => 非受保护区
+        // 首先清除所有的Block
+        this.minPacket.mutableField.mutableDangerousField.clearBlocks();
+//        Block block
+        return true;
+    }
+
+    /**
+     * 从 MINPacket 的分区当中提取出 CPacket 的各项属性
+     * @return
+     */
+    @Override
+    public boolean extraDataFromFields() {
+        // 提取 Payload
+        Block payloadBlock=this.minPacket.readOnlyField.getBlockByType(new VlInt(TLV.TlvPayload));
+        if(payloadBlock==null){
+            return false;
+        }
+        if(this.payload.wireDecode(payloadBlock)){
+            return false;
+        }
+
+        // 提取 TTL
+        Block ttlBlock=this.minPacket.mutableField.mutableDangerousField.getBlockByType(new VlInt(TLV.TlvTTL));
+        if(ttlBlock==null){
+            return false;
+        }
+        if(this.ttl.wireDecode(ttlBlock)){
+            return false;
+        }
+
+        // 提取标识
+        IdentifierWrapper commonIdentifier=this.minPacket.identifierField.getIdentifierByType(new VlInt(TLV.TlvIdentifierCommon));
+        if(commonIdentifier==null){
+            return false;
+        }
+        String identifierString=commonIdentifier.toUri();
+        if((identifierString.length()>0)&&(identifierString.startsWith("/"))){
+            this.flatIdentifier=identifierString.substring(1);
+        }
+
+        return true;
+    }
+
+    @Override
+    public int wireEncode(Encoder encoder) {
+        return 0;
+    }
+
+    @Override
+    public boolean wireDecode(Block block) {
+        return false;
+    }
 }