67 lines
2.2 KiB
C
67 lines
2.2 KiB
C
/****************************************************************************
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* libs/libc/wchar/lib_swprintf.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <wchar.h>
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#include "libc.h"
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#include <nuttx/streams.h>
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#ifdef CONFIG_LIBC_WCHAR
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* swprintf
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****************************************************************************/
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int swprintf(FAR wchar_t *buf, size_t maxlen, FAR const wchar_t *fmt, ...)
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{
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struct lib_memoutstream_s memoutstream;
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va_list ap;
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int n;
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/* Initialize a memory stream to write to the buffer */
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lib_memoutstream((FAR struct lib_memoutstream_s *)&memoutstream,
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(FAR char *)buf, maxlen);
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/* Then let lib_vsprintf do the real work */
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va_start(ap, fmt);
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n = lib_vsprintf((FAR struct lib_outstream_s *)&memoutstream.public,
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(FAR const char *)fmt, ap);
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va_end(ap);
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return n;
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}
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#endif /* CONFIG_LIBC_WCHAR */
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