nuttx/libs/libc/stdio/lib_vsprintf.c

/****************************************************************************
 * libs/libc/stdio/lib_vsprintf.c
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.  The
 * ASF licenses this file to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance with the
 * License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 ****************************************************************************/

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <nuttx/config.h>

#include <stdio.h>

#include "libc.h"

/****************************************************************************
 * Public Functions
 ****************************************************************************/

/****************************************************************************
 * Name: vsprintf
 ****************************************************************************/

int vsprintf(FAR char *dest, FAR const IPTR char *src, va_list ap)
{
  struct lib_memoutstream_s memoutstream;

  /* Wrap the destination buffer in a stream object and let
   * libs/libc/stdio/lib_vsprintf do the work.
   */

  lib_memoutstream((FAR struct lib_memoutstream_s *)&memoutstream, dest,
                   LIB_BUFLEN_UNKNOWN);
  return lib_vsprintf((FAR struct lib_outstream_s *)&memoutstream.public,
                      src, ap);
}