stdio: added vdprintf() for printf to a file descriptor

nuttx/libc/lib_internal.h

@@ -140,6 +140,7 @@ int lib_vsprintf(FAR struct lib_outstream_s *obj,
 /* Defined lib_rawprintf.c */
 
 int lib_rawvprintf(const char *src, va_list ap);
+int lib_rawvdprintf(int fd, const char *fmt, va_list ap);
 
 /* Defined lib_lowprintf.c */
 

nuttx/libc/stdio/Make.defs

@@ -59,7 +59,7 @@ CSRCS += lib_fopen.c lib_fclose.c lib_fread.c lib_libfread.c lib_fseek.c \
 		 lib_gets.c lib_fwrite.c lib_libfwrite.c lib_fflush.c \
 		 lib_libflushall.c lib_libfflush.c lib_rdflush.c lib_wrflush.c \
 		 lib_fputc.c lib_puts.c lib_fputs.c lib_ungetc.c lib_vprintf.c \
-		 lib_fprintf.c lib_vfprintf.c lib_stdinstream.c lib_stdoutstream.c \
+		 lib_fprintf.c lib_vfprintf.c lib_vdprintf.c lib_stdinstream.c lib_stdoutstream.c \
 		 lib_perror.c lib_feof.c lib_ferror.c lib_clearerr.c
 
 endif

nuttx/libc/stdio/lib_rawprintf.c

@@ -149,3 +149,18 @@ int lib_rawprintf(const char *fmt, ...)
 
   return ret;
 }
+
+
+/****************************************************************************
+ * Name: lib_rawvdprintf
+ ****************************************************************************/
+
+int lib_rawvdprintf(int fd, const char *fmt, va_list ap)
+{
+  /* Wrap the fd in a stream object and let lib_vsprintf
+   * do the work.
+   */
+  struct lib_rawoutstream_s rawoutstream;
+  lib_rawoutstream(&rawoutstream, fd);
+  return lib_vsprintf(&rawoutstream.public, fmt, ap);
+}

nuttx/libc/stdio/lib_vdprintf.c

@@ -0,0 +1,81 @@
+/****************************************************************************
+ * libc/stdio/lib_vdprintf.c
+ *
+ *   Copyright (C) 2007-2009, 2011 Andrew Tridgell. All rights reserved.
+ *   Author: Andrew Tridgell <andrew@tridgell.net>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdio.h>
+
+#include "lib_internal.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Type Declarations
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Global Constant Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Global Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Constant Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+int vdprintf(int fd, FAR const char *fmt, va_list ap)
+{
+	return lib_rawvdprintf(fd, fmt, ap);
+}