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Annotation of dgamelaunch-openbsd/last_char_is.c, Revision 1.1

1.1     ! rubenllo    1: /*
        !             2:  * busybox library eXtended function
        !             3:  *
        !             4:  * Copyright (C) 2001 Larry Doolittle, <ldoolitt@recycle.lbl.gov>
        !             5:  *
        !             6:  * This program is free software; you can redistribute it and/or modify
        !             7:  * it under the terms of the GNU General Public License as published by
        !             8:  * the Free Software Foundation; either version 2 of the License, or
        !             9:  * (at your option) any later version.
        !            10:  *
        !            11:  * This program is distributed in the hope that it will be useful,
        !            12:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            13:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
        !            14:  * General Public License for more details.
        !            15:  *
        !            16:  * You should have received a copy of the GNU General Public License
        !            17:  * along with this program; if not, write to the Free Software
        !            18:  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
        !            19:  *
        !            20:  */
        !            21:
        !            22: #include <string.h>
        !            23:
        !            24: /* Find out if the last character of a string matches the one given Don't
        !            25:  * underrun the buffer if the string length is 0.  Also avoids a possible
        !            26:  * space-hogging inline of strlen() per usage.
        !            27:  */
        !            28: char *
        !            29: last_char_is (const char *s, int c)
        !            30: {
        !            31:   char *sret;
        !            32:   if (!s)
        !            33:     return NULL;
        !            34:   sret = (char *) s + strlen (s) - 1;
        !            35:   if (sret >= s && *sret == c)
        !            36:     {
        !            37:       return sret;
        !            38:     }
        !            39:   else
        !            40:     {
        !            41:       return NULL;
        !            42:     }
        !            43: }