BSD 4_3_Net_2 release

[unix-history] / usr / src / contrib / isode / others / quipu / uips / pod / util.c

#include "util.h"

int issubstr(str, substr)
    char *str;
    char *substr;
{
 register char *sptr;
 char c;
 int substrlen = strlen(substr);
 int count;

 if (*substr == '\0' || *str == '\0') return(0);

 sptr = str;
 c = *substr;

 while (1) {
   while (*sptr != '\0' && *sptr != c) sptr++;
   if (*sptr == '\0') return(0);
   for (count = 0; count < substrlen; count++) {
     if (sptr[count] == '\0') return(0);
     else if (substr[count] != sptr[count]) break;
   }
   if (count == substrlen) return(1);
   sptr++;
 }
}

int indexstring(string, substring)
    char *string, *substring;
{
 register char *sub, *str;
 char c, s;
 int indx = 0;

 while (1) {
   str = string + indx;;
   if (*str == '\0') return(-1);
   sub = substring;

   if (*str == *sub) {
     s = *str;
     c = *sub;
     while(c == s && c != '\0') {
       c = *++sub;
       s = *++str;
     }

     if (c == '\0') return((int) indx);
     else if(s == '\0') return(-1);
   }
   indx++;
 }
}