Taylor UUCP 1.04

[unix-history] / gnu / libexec / uucp / libuucp / strcas.c

/* strcas.c
  Compare two strings case insensitively.  */

#include "uucp.h"
#include <ctype.h>

int
strcasecmp (z1, z2)
    const char *z1;
    const char *z2;
{
 char b1, b2;

 while ((b1 = *z1++) != '\0')
   {
     b2 = *z2++;
     if (b2 == '\0')
       return 1;
     if (b1 != b2)
       {
         if (isupper (BUCHAR (b1)))
           b1 = tolower (BUCHAR (b1));
         if (isupper (BUCHAR (b2)))
           b2 = tolower (BUCHAR (b2));
         if (b1 != b2)
           return b1 - b2;
       }
   }
 if (*z2 == '\0')
   return 0;
 else
   return -1;
}