4.3BSD - /usr/ingres/source/gutil/getufield.c

   1: # include   <sccs.h>
   2: 
   3: SCCSID(@(#)getufield.c	8.1	12/31/84)
   4: 
   5: /*
   6: **  GETUFIELD -- extract field from users file
   7: **
   8: **	A buffer returned as the result of a getuser() (or getpw())
   9: **	call is scanned for the indicated parameter, numbered from
  10: **	zero.  A pointer to the parameter is returned.
  11: */
  12: 
  13: char *
  14: getufield(buf, num)
  15: char    *buf;
  16: int num;
  17: {
  18:     register char   c;
  19:     register int    i;
  20:     register char   *p;
  21:     char        *r;
  22: 
  23:     p = buf;
  24: 
  25:     /* skip other fields */
  26:     for (i = num; i > 0; i--)
  27:     {
  28:         while ((c = *p++) != 0)
  29:             if (c == ':')
  30:                 break;
  31:     }
  32: 
  33:     /* save result pointer */
  34:     r = p;
  35: 
  36:     /* null-terminate this field */
  37:     while ((c = *p++) != 0)
  38:         if (c == ':')
  39:             break;
  40: 
  41:     *--p = 0;
  42: 
  43:     return (r);
  44: }

Defined functions