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Annotation of 43BSDReno/kerberosIV/krb/fgetst.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * $Source: /mit/kerberos/src/lib/krb/RCS/fgetst.c,v $
                      3:  * $Author: jtkohl $ 
                      4:  *
                      5:  * Copyright 1987, 1988 by the Massachusetts Institute of Technology. 
                      6:  *
                      7:  * For copying and distribution information, please see the file
                      8:  * <mit-copyright.h>. 
                      9:  */
                     10: 
                     11: #ifndef lint
                     12: static char rcsid_fgetst_c[] =
                     13: "$Header: fgetst.c,v 4.0 89/01/23 10:08:31 jtkohl Exp $";
                     14: #endif                         /* lint */
                     15: 
                     16: #include <mit-copyright.h>
                     17: #include <stdio.h>
                     18: 
                     19: /*
                     20:  * fgetst takes a file descriptor, a character pointer, and a count.
                     21:  * It reads from the file it has either read "count" characters, or
                     22:  * until it reads a null byte.  When finished, what has been read exists
                     23:  * in "s". If "count" characters were actually read, the last is changed
                     24:  * to a null, so the returned string is always null-terminated.  fgetst
                     25:  * returns the number of characters read, including the null terminator. 
                     26:  */
                     27: 
                     28: fgetst(f, s, n)
                     29:     FILE   *f;
                     30:     register char *s;
                     31:     int     n;
                     32: {
                     33:     register count = n;
                     34:     int     ch;                /* NOT char; otherwise you don't see EOF */
                     35: 
                     36:     while ((ch = getc(f)) != EOF && ch && --count) {
                     37:        *s++ = ch;
                     38:     }
                     39:     *s = '\0';
                     40:     return (n - count);
                     41: }

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