74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
/****************************************************************************
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* libs/libc/stdio/lib_fgets.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 <stdio.h>
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#include "libc.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: fgets
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*
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* Description:
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* fgets() reads in at most one less than 'buflen' characters from stream
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* and stores them into the buffer pointed to by 'buf'. Reading stops after
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* an EOF or a newline. If a newline is read, it is stored into the
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* buffer. A null terminator is stored after the last character in the
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* buffer.
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*
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****************************************************************************/
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FAR char *fgets_unlocked(FAR char *buf, int buflen, FAR FILE *stream)
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{
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/* Handle negative buffer size */
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if (buflen < 0)
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{
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return NULL;
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}
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/* Let lib_fgets() do the heavy lifting */
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else
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{
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return lib_fgets_unlocked(buf, buflen, stream, true, false);
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}
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}
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FAR char *fgets(FAR char *buf, int buflen, FAR FILE *stream)
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{
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FAR char *ret;
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flockfile(stream);
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ret = fgets_unlocked(buf, buflen, stream);
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funlockfile(stream);
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return ret;
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}
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