111 lines
3.2 KiB
C
111 lines
3.2 KiB
C
/****************************************************************************
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* tools/rmcr.c
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*
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* SPDX-License-Identifier: Apache-2.0
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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 <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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/****************************************************************************
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* Private Functions
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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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