diplodocus.org Git - nmh/blob - sbr/ssequal.c

   1
   2 /*
   3  * ssequal.c -- check if a string is a substring of another
   4  *
   5  * $Id$
   6  */
   7
   8 #include <h/mh.h>
   9
  10 /*
  11  * Check if s1 is a substring of s2.
  12  * If yes, then return 1, else return 0.
  13  */
  14
  15 int
  16 ssequal (char *s1, char *s2)
  17 {
  18     if (!s1)
  19         s1 = "";
  20     if (!s2)
  21         s2 = "";
  22
  23     while (*s1)
  24         if (*s1++ != *s2++)
  25             return 0;
  26     return 1;
  27 }