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Annotation of dgamelaunch-openbsd/last_char_is.c, Revision 1.1.1.1

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: }