From 00cebaacace8d3c77655bc7ce751a0aa5abd0784 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sun, 28 Feb 2021 05:07:02 +0800
Subject: [PATCH] add RT_KERVICE_USING_STDLIB

---
 include/rtthread.h | 41 ++++++++++++++++++++++++++++-------------
 src/Kconfig        |  4 ++++
 src/kservice.c     |  5 +++++
 3 files changed, 37 insertions(+), 13 deletions(-)

diff --git a/include/rtthread.h b/include/rtthread.h
index 1e0094e73b..9d537d6e4d 100644
--- a/include/rtthread.h
+++ b/include/rtthread.h
@@ -14,6 +14,7 @@
  * 2013-06-24     Bernard      add rt_kprintf re-define when not use RT_USING_CONSOLE.
  * 2016-08-09     ArdaFu       add new thread and interrupt hook.
  * 2018-11-22     Jesven       add all cpu's lock and ipi handler
+ * 2021-02-28     Meco Man     add RT_KERVICE_USING_STDLIB
  */
 
 #ifndef __RT_THREAD_H__
@@ -516,7 +517,9 @@ void rt_components_board_init(void);
 #else
 void rt_kprintf(const char *fmt, ...);
 void rt_kputs(const char *str);
+rt_int32_t rt_sscanf(const char *buf, const char *fmt, ...);
 #endif
+
 rt_int32_t rt_vsprintf(char *dest, const char *format, va_list arg_ptr);
 rt_int32_t rt_vsnprintf(char *buf, rt_size_t size, const char *fmt, va_list args);
 rt_int32_t rt_sprintf(char *buf, const char *format, ...);
@@ -541,22 +544,34 @@ int __rt_ffs(int value);
 void *rt_memset(void *src, int c, rt_ubase_t n);
 void *rt_memcpy(void *dest, const void *src, rt_ubase_t n);
 
-rt_int32_t rt_strncmp(const char *cs, const char *ct, rt_ubase_t count);
-rt_int32_t rt_strcmp(const char *cs, const char *ct);
-rt_size_t rt_strlen(const char *src);
-rt_size_t rt_strnlen(const char *s, rt_ubase_t maxlen);
-char *rt_strdup(const char *s);
-#if defined(__CC_ARM) || defined(__CLANG_ARM)
-/* leak strdup interface */
-char* strdup(const char* str);
-#endif
-
-char *rt_strstr(const char *str1, const char *str2);
-rt_int32_t rt_sscanf(const char *buf, const char *fmt, ...);
-char *rt_strncpy(char *dest, const char *src, rt_ubase_t n);
+#ifndef RT_KERVICE_USING_STDLIB
 void *rt_memmove(void *dest, const void *src, rt_ubase_t n);
 rt_int32_t rt_memcmp(const void *cs, const void *ct, rt_ubase_t count);
+char *rt_strstr(const char *str1, const char *str2);
 rt_int32_t rt_strcasecmp(const char *a, const char *b);
+char *rt_strncpy(char *dest, const char *src, rt_ubase_t n);
+rt_int32_t rt_strncmp(const char *cs, const char *ct, rt_ubase_t count);
+rt_int32_t rt_strcmp(const char *cs, const char *ct);
+rt_size_t rt_strnlen(const char *s, rt_ubase_t maxlen);
+rt_size_t rt_strlen(const char *src);
+#else
+#include <string.h>
+#define rt_memmove(dest, src, n)    memmove(dest, src, n)
+#define rt_memcmp(cs, ct, count)    memcmp(cs, ct, count)
+#define rt_strstr(str1, str2)       strstr(str1, str2)
+#define rt_strcasecmp(a, b)         strcasecmp(a, b)
+#define rt_strncpy(dest, src, n)    strncpy(dest, src, n)
+#define rt_strncmp(cs, ct, count)   strncmp(cs, ct, count)
+#define rt_strcmp(cs, ct)           strcmp(cs, ct)
+#define rt_strnlen(s, maxlen)       strnlen(s, maxlen)
+#define rt_strlen(src)              strlen(src)
+#endif /*RT_KERVICE_USING_STDLIB*/
+
+char *rt_strdup(const char *s);
+#if defined(__CC_ARM) || defined(__CLANG_ARM)
+/* lack strdup interface */
+char* strdup(const char* str);
+#endif
 
 void rt_show_version(void);
 
diff --git a/src/Kconfig b/src/Kconfig
index 803c827e51..5bc9adda52 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -116,6 +116,10 @@ config RT_TIMER_THREAD_STACK_SIZE
 
 endif
 
+config RT_KERVICE_USING_STDLIB
+    bool "Enable kservice to use standard C library"
+    default n
+
 menuconfig RT_DEBUG
     bool "Enable debugging features"
     default y
diff --git a/src/kservice.c b/src/kservice.c
index 9fc3971c7e..29097bafac 100644
--- a/src/kservice.c
+++ b/src/kservice.c
@@ -17,6 +17,7 @@
  * 2013-06-24     Bernard      remove rt_kprintf if RT_USING_CONSOLE is not defined.
  * 2013-09-24     aozima       make sure the device is in STREAM mode when used by rt_kprintf.
  * 2015-07-06     Bernard      Add rt_assert_handler routine.
+ * 2021-02-28     Meco Man     add RT_KERVICE_USING_STDLIB
  */
 
 #include <rtthread.h>
@@ -280,6 +281,8 @@ RT_WEAK void *rt_memcpy(void *dst, const void *src, rt_ubase_t count)
 }
 RTM_EXPORT(rt_memcpy);
 
+#ifndef RT_KERVICE_USING_STDLIB
+
 /**
  * This function will move memory content from source address to destination
  * address.
@@ -506,6 +509,8 @@ rt_size_t rt_strlen(const char *s)
 }
 RTM_EXPORT(rt_strlen);
 
+#endif /*RT_KERVICE_USING_STDLIB*/
+
 #ifdef RT_USING_HEAP
 /**
  * This function will duplicate a string.