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54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
/* Perl inspired chomp() implementation.
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*
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* Copyright (c) 2014-2021 Joachim Wiberg <troglobit@gmail.com>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <errno.h>
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#include <string.h>
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/**
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* chomp - Perl like chomp function, chop off last char(s) if newline.
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* @str: String to chomp
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*
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* This function is like Perl chomp, but it's set to chop of all
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* trailing newlines. Useful in combination with fgets().
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*
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* Returns:
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* If @str is a valid pointer this function returns @str, otherwise
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* @errno is set to %EINVAL and this function returns %NULL.
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*/
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char *chomp(char *str)
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{
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char *p;
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if (!str || strlen(str) < 1) {
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errno = EINVAL;
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return NULL;
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}
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p = str + strlen(str) - 1;
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while (p >= str && *p == '\n')
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*p-- = 0;
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return str;
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}
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/**
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* Local Variables:
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* indent-tabs-mode: t
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* c-file-style: "linux"
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* End:
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*/
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