Return "-1" on an error.

[unix-history] / usr / src / usr.bin / tn3270 / api / astosc.c

#include <ctype.h>

#include "../general/general.h"

#include "../ctlr/function.h"

#include "astosc.h"

struct astosc astosc[256] = {
#include "astosc.out"
};

/* compare two strings, ignoring case */

static
ustrcmp(string1, string2)
register char *string1;
register char *string2;
{
   register int c1, c2;

   while ((c1 = (unsigned char) *string1++) != 0) {
       if (isupper(c1)) {
           c1 = tolower(c1);
       }
       if (isupper(c2 = (unsigned char) *string2++)) {
           c2 = tolower(c2);
       }
       if (c1 < c2) {
           return(-1);
       } else if (c1 > c2) {
           return(1);
       }
   }
   if (*string2) {
       return(-1);
   } else {
       return(0);
   }
}


/*
* This routine takes a string and returns an integer.  It may return
* -1 if there is no other integer which corresponds to the
* string.  -1 implies an error.
*/

int
ascii_to_index(string)
register char *string;
{
   register struct astosc *this;

   for (this = astosc; this <= &astosc[highestof(astosc)]; this++) {
       if (ustrcmp(this->name, string) == 0) {
           return this-astosc;
       }
   }
   return -1;
}