1 /*
2 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
3 * Use is subject to license terms.
4 */
5
6 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
7 /* All Rights Reserved */
8
9 /*
10 * Copyright (c) 1980 Regents of the University of California.
11 * All rights reserved. The Berkeley software License Agreement
12 * specifies the terms and conditions for redistribution.
13 */
14
15 #include "refer..c"
16
17 static char ahead[1024];
18 static int peeked = 0;
19 static char *noteof = (char *)1;
20
21 char *
input(char * s)22 input(char *s)
23 {
24 if (peeked) {
25 peeked = 0;
26 if (noteof == 0)
27 return (0);
28 strcpy(s, ahead);
29 return (s);
30 }
31 return (fgets(s, 1000, in));
32 }
33
34 char *
lookat(void)35 lookat(void)
36 {
37 if (peeked)
38 return (ahead);
39 noteof = input(ahead);
40 peeked = 1;
41 return (noteof);
42 }
43
44 void
addch(char * s,char c)45 addch(char *s, char c)
46 {
47 while (*s)
48 s++;
49 *s++ = c;
50 *s = 0;
51 }
52