source: buchla-68k/orig/GP/GETWORD.C

/*
   =============================================================================
        getword.c -- Get a string from a file
        Version 2 -- 1988-07-13 -- D.N. Lynx Crowe
   =============================================================================
*/

#include "stdio.h"
#include "ctype.h"
#include "stddefs.h"

/*
   =============================================================================
        getword(string, ioptr) -- get a string from a file

        getword(string, ioptr) is equivalent to fscanf(ioptr, "%s", string)
        but much faster.  It returns a NULL pointer on EOF or the end
        of the string when one is found.  The return result can be used
        to find the length of the obtained string, or to append further
        characters to the returned string.
   =============================================================================
*/

char *
getword(string, ioptr)
register char *string;
register FILE *ioptr;
{
        register int c;

        while (((c = getc(ioptr)) NE EOF) AND isspace(c))
                ;

        if (c EQ EOF)
                return(NULL);

        do {
                *string++ = c;

        } while (((c = getc(ioptr)) NE EOF) AND (NOT isspace(c)));

        *string = '\0';         /* terminate the string */

        return(string);         /* return a pointer to the end of the string */
}