From 319501e9ef38f88ce97ce204ca10a389090bfde9 Mon Sep 17 00:00:00 2001
From: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
Date: Mon, 3 Jun 2024 16:55:36 +0800
Subject: [PATCH] libs/libc: remove LIB_BUFLEN_UNKNOWN to reduce depends on
 libc.h

1. remove libc.h
2. include <nuttx/stream.h>, remove stdio.h, becuase stream.h include stdio.h

Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
---
 libs/libc/libc.h               | 2 --
 libs/libc/stdio/lib_sprintf.c  | 5 ++---
 libs/libc/stdio/lib_vsprintf.c | 8 ++------
 libs/libc/stdio/lib_vsscanf.c  | 8 +-------
 4 files changed, 5 insertions(+), 18 deletions(-)

diff --git a/libs/libc/libc.h b/libs/libc/libc.h
index 8e3a038fb5a..b531fa87ff7 100644
--- a/libs/libc/libc.h
+++ b/libs/libc/libc.h
@@ -53,8 +53,6 @@
 #  define CONFIG_LIBC_HOMEDIR "/"
 #endif
 
-#define LIB_BUFLEN_UNKNOWN INT_MAX
-
 #if ((!defined(CONFIG_LIBC_PREVENT_MEMCHR_USER) && !defined(__KERNEL__))  || \
      (!defined(CONFIG_LIBC_PREVENT_MEMCHR_KERNEL) && defined(__KERNEL__)))
 #  define LIBC_BUILD_MEMCHR
diff --git a/libs/libc/stdio/lib_sprintf.c b/libs/libc/stdio/lib_sprintf.c
index d99840a815d..1536828e5d0 100644
--- a/libs/libc/stdio/lib_sprintf.c
+++ b/libs/libc/stdio/lib_sprintf.c
@@ -22,8 +22,7 @@
  * Included Files
  ****************************************************************************/
 
-#include <stdio.h>
-#include "libc.h"
+#include <nuttx/streams.h>
 
 /****************************************************************************
  * Public Functions
@@ -41,7 +40,7 @@ int sprintf(FAR char *buf, FAR const IPTR char *fmt, ...)
 
   /* Initialize a memory stream to write to the buffer */
 
-  lib_memoutstream(&memoutstream, buf, LIB_BUFLEN_UNKNOWN);
+  lib_memoutstream(&memoutstream, buf, INT_MAX);
 
   /* Then let lib_vsprintf do the real work */
 
diff --git a/libs/libc/stdio/lib_vsprintf.c b/libs/libc/stdio/lib_vsprintf.c
index 08378f7f085..b474a63ac9f 100644
--- a/libs/libc/stdio/lib_vsprintf.c
+++ b/libs/libc/stdio/lib_vsprintf.c
@@ -22,11 +22,7 @@
  * Included Files
  ****************************************************************************/
 
-#include <nuttx/config.h>
-
-#include <stdio.h>
-
-#include "libc.h"
+#include <nuttx/streams.h>
 
 /****************************************************************************
  * Public Functions
@@ -44,6 +40,6 @@ int vsprintf(FAR char *dest, FAR const IPTR char *src, va_list ap)
    * libs/libc/stdio/lib_vsprintf do the work.
    */
 
-  lib_memoutstream(&memoutstream, dest, LIB_BUFLEN_UNKNOWN);
+  lib_memoutstream(&memoutstream, dest, INT_MAX);
   return lib_vsprintf(&memoutstream.common, src, ap);
 }
diff --git a/libs/libc/stdio/lib_vsscanf.c b/libs/libc/stdio/lib_vsscanf.c
index 5b53a9e0212..6be4a0c2fad 100644
--- a/libs/libc/stdio/lib_vsscanf.c
+++ b/libs/libc/stdio/lib_vsscanf.c
@@ -22,14 +22,8 @@
  * Included Files
  ****************************************************************************/
 
-#include <nuttx/config.h>
-
-#include <stdio.h>
-
 #include <nuttx/streams.h>
 
-#include "libc.h"
-
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
@@ -45,7 +39,7 @@ int vsscanf(FAR const char *buf, FAR const IPTR char *fmt, va_list ap)
 
   /* Initialize a memory stream to freadm from the buffer */
 
-  lib_meminstream(&meminstream, buf, LIB_BUFLEN_UNKNOWN);
+  lib_meminstream(&meminstream, buf, INT_MAX);
 
   /* Then let lib_vscanf do the real work */