增加删除已注册的cmd和keys的接口

Change-Id: Iedabe119d74f3232a15e206e0b4edf03e8d1ea82

extensions/test/test.c

@@ -100,6 +100,39 @@ static void cmd_history(int argc, char* argv[])
     }while(len--);
 }
 
+static void cmd_delete_cmd(int argc, char* argv[])
+{
+    int res = 0;
+    if (argc == 2)
+    {
+        res = xcmd_unregister_cmd(argv[1]);
+        if (res)
+        {
+            goto error;
+        }
+    }
+    return;
+error:
+    xcmd_print("Too many parameters are entered or there is no command\r\n");
+    return;
+}
+
+static void cmd_delete_key(int argc, char* argv[])
+{
+    int res = 0;
+    if (argc == 2)
+    {
+        res = xcmd_unregister_key(argv[1]);
+        if (res)
+        {
+            goto error;
+        }
+    }
+error:
+    xcmd_print("Too many parameters are entered or there is no command\r\n");
+}
+
+
 static int cmd_ctr_q(void* pv)
 {
     xcmd_print("this is ctr+q\n");
@@ -111,6 +144,8 @@ static xcmd_t cmds[] =
     {"echo", cmd_echo, "echo anything", NULL},
     {"history", cmd_history, "show history list", NULL},
     {"example", cmd_example, "example [-f|-i|-s] [val]", NULL},
+    {"delcmd",  cmd_delete_cmd, "delete cmd [val]", NULL},
+    {"delkey",  cmd_delete_key, "delete key [val]", NULL},
 };
 
 static xcmd_key_t keys[] = 

inc/xcmd.h

@@ -81,6 +81,20 @@ xcmd_t *xcmd_cmdlist_get(void);
  */
 xcmd_key_t *xcmd_keylist_get(void);
 
+/**
+ * @description: 删除已经注册的cmd
+ * @param {char*} cmd：cmd集
+ * @return {int}：0：success； !0：failed
+ */
+int xcmd_unregister_cmd(char *cmd);
+
+/**
+ * @description:删除已经注册的key
+ * @param {char*} key：key集
+ * @return {int}：0：success； !0：failed
+ */
+int xcmd_unregister_key(char *key);
+
 /**
  * @description: 手动执行命令
  * @param {char* } str：命令

src/xcmd.c

@@ -592,6 +592,40 @@ xcmd_t *xcmd_cmdlist_get(void)
     return g_xcmder.cmd_list.head;
 }
 
+int xcmd_unregister_cmd(char *cmd)
+{
+    xcmd_t *p = xcmd_cmdlist_get();
+    xcmd_t *bk = p;
+    while(p)
+    {
+        if(strcmp(cmd, p->name) == 0)
+        {
+            bk->next = p->next;
+            return 0;
+        }
+        bk = p;
+        p = p->next;
+    }
+    return -1;
+}
+
+int xcmd_unregister_key(char *key)
+{
+    xcmd_t *p = xcmd_cmdlist_get();
+    xcmd_t *bk = p;
+    while(p)
+    {
+        if(strcmp(key, p->name) == 0)
+        {
+            bk->next = p->next;
+            return 0;
+        }
+        bk = p;
+        p = p->next;
+    }
+    return -1;
+}
+
 void xcmd_set_prompt(const char* prompt)
 {
     if(prompt)