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Annotation of embedaddon/pimd/libite/chomp.c, revision 1.1

1.1     ! misho       1: /* Perl inspired chomp() implementation.
        !             2:  *
        !             3:  * Copyright (c) 2014-2015  Joachim Nilsson <troglobit@gmail.com>
        !             4:  *
        !             5:  * Permission to use, copy, modify, and/or distribute this software for any
        !             6:  * purpose with or without fee is hereby granted, provided that the above
        !             7:  * copyright notice and this permission notice appear in all copies.
        !             8:  *
        !             9:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
        !            10:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
        !            11:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
        !            12:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
        !            13:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
        !            14:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
        !            15:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
        !            16:  */
        !            17: 
        !            18: #include <errno.h>
        !            19: #include <string.h>
        !            20: 
        !            21: /**
        !            22:  * chomp - Perl like chomp function, chop off last char(s) if newline.
        !            23:  * @str: String to chomp
        !            24:  *
        !            25:  * This function is like Perl chomp, but it's set to chop of all
        !            26:  * trailing newlines.
        !            27:  *
        !            28:  * Returns:
        !            29:  * If @str is a valid pointer this function returns @str, otherwise
        !            30:  * @errno is set to %EINVAL and this function returns %NULL.
        !            31:  */
        !            32: char *chomp(char *str)
        !            33: {
        !            34:        char *p;
        !            35: 
        !            36:        if (!str || strlen(str) < 1) {
        !            37:                errno = EINVAL;
        !            38:                return NULL;
        !            39:        }
        !            40: 
        !            41:        p = str + strlen(str) - 1;
        !            42:         while (*p == '\n')
        !            43:                *p-- = 0;
        !            44: 
        !            45:        return str;
        !            46: }
        !            47: 
        !            48: #ifdef UNITTEST
        !            49: #include <stdio.h>
        !            50: int main(void)
        !            51: {
        !            52:        int i; char t[][16] = { "hej\ndej", "Slime\n\n\\n", "Tripple\n\n\n", "" };
        !            53:        for (i = 0; t[i][0]; i++) printf("[%02d]: '%s'\n", i, chomp(t[i])); return 0;
        !            54: }
        !            55: #endif
        !            56: 
        !            57: /**
        !            58:  * Local Variables:
        !            59:  *  compile-command: "make V=1 -f chomp.mk"
        !            60:  *  version-control: t
        !            61:  *  indent-tabs-mode: t
        !            62:  *  c-file-style: "linux"
        !            63:  * End:
        !            64:  */