[shell] add finsh_get/set_prompt_mode.

components/finsh/shell.c

@@ -67,6 +67,13 @@ const char *finsh_get_prompt()
 #define _PROMPT     "finsh "
     static char finsh_prompt[RT_CONSOLEBUF_SIZE + 1] = {0};
 
+    /* check prompt mode */
+    if (!shell->prompt_mode)
+    {
+        finsh_prompt[0] = '\0';
+        return finsh_prompt;
+    }
+
 #ifdef FINSH_USING_MSH
     if (msh_is_used()) strcpy(finsh_prompt, _MSH_PROMPT);
     else
@@ -84,6 +91,34 @@ const char *finsh_get_prompt()
 }
 #endif
 
+/**
+ * @ingroup finsh
+ *
+ * This function get the prompt mode of finsh shell.
+ *
+ * @return prompt the prompt mode, 0 disable prompt mode, other values enable prompt mode.
+ */
+rt_uint32_t finsh_get_prompt_mode(void)
+{
+    RT_ASSERT(shell != RT_NULL);
+    return shell->prompt_mode;
+}
+
+/**
+ * @ingroup finsh
+ *
+ * This function set the prompt mode of finsh shell.
+ *
+ * The parameter 0 disable prompt mode, other values enable prompt mode.
+ *
+ * @param prompt the prompt mode
+ */
+void finsh_set_prompt_mode(rt_uint32_t prompt_mode)
+{
+    RT_ASSERT(shell != RT_NULL);
+    shell->prompt_mode = prompt_mode;
+}
+
 static char finsh_getchar(void)
 {
 #ifdef RT_USING_POSIX

components/finsh/shell.h

@@ -86,6 +86,7 @@ struct finsh_shell
     enum input_stat stat;
 
     rt_uint8_t echo_mode:1;
+    rt_uint8_t prompt_mode: 1;
 
 #ifdef FINSH_USING_HISTORY
     rt_uint16_t current_history;
@@ -118,6 +119,9 @@ int finsh_system_init(void);
 void finsh_set_device(const char* device_name);
 const char* finsh_get_device(void);
 
+rt_uint32_t finsh_get_prompt_mode(void);
+void finsh_set_prompt_mode(rt_uint32_t prompt_mode);
+
 #ifdef FINSH_USING_AUTH
 rt_err_t finsh_set_password(const char *password);
 const char *finsh_get_password(void);