6a3c2aded6
* Simplify EINTR/ECANCEL error handling 1. Add semaphore uninterruptible wait function 2 .Replace semaphore wait loop with a single uninterruptible wait 3. Replace all sem_xxx to nxsem_xxx * Unify the void cast usage 1. Remove void cast for function because many place ignore the returned value witout cast 2. Replace void cast for variable with UNUSED macro
120 lines
3.8 KiB
C
120 lines
3.8 KiB
C
/****************************************************************************
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* tools/rmcr.c
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*
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* Copyright (C) 2019 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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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 <stdio.h>
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#include <stdbool.h>
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#include <string.h>
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#include <ctype.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define LINESIZE 1024
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static char g_line[LINESIZE];
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/****************************************************************************
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* Public Data
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****************************************************************************/
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int main(int argc, char **argv)
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{
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FILE *instream;
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FILE *outstream;
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int len;
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int ret = 1;
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if (argc != 3)
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{
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fprintf(stderr, "ERROR: Two arguments expected\n");
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return 1;
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}
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/* Open the source file read-only */
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instream = fopen(argv[1], "r");
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if (instream == NULL)
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{
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fprintf(stderr, "ERROR: Failed to open %s for reading\n", argv[1]);
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return 1;
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}
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/* Open the destination file write-only */
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outstream = fopen(argv[2], "w");
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if (outstream == NULL)
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{
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fprintf(stderr, "ERROR: Failed to open %s for reading\n", argv[2]);
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goto errout_with_instream;
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}
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/* Process each line in the file */
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while ((fgets(g_line, LINESIZE, instream) != NULL))
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{
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/* Remove all whitespace (including newline) from the end of the line */
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len = strlen(g_line) - 1;
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while (len >= 0 && isspace(g_line[len]))
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{
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len--;
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}
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/* Put the newline back. len is either -1, or points to the last, non-
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* space character in the line.
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*/
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g_line[len + 1] = '\n';
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g_line[len + 2] = '\0';
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fputs(g_line, outstream);
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}
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ret = 0;
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fclose(outstream);
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errout_with_instream:
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fclose(instream);
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return ret;
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}
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