1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
29
30 #include "termio.h"
31
32 /*
33 * The following macro computes the number of seconds to sleep
34 * AFTER waiting for the system buffers to be drained.
35 *
36 * Various choices:
37 *
38 * - A percentage (perhaps even >100%) of the time it would
39 * take to print the printer's buffer. Use this if it appears
40 * the printers are affected if the port is closed before they
41 * finish printing.
42 *
43 * - 0. Use this to avoid any extra sleep after waiting for the
44 * system buffers to be flushed.
45 *
46 * - N > 0. Use this to have a fixed sleep after flushing the
47 * system buffers.
48 *
49 * The sleep period can be overridden by a single command line argument.
50 */
51 /* 25% of the print-full-buffer time, plus 1 */
52 #define LONG_ENOUGH(BUFSZ,CPS) (1 + ((250 * BUFSZ) / CPS) / 1000)
53
54 extern int tidbit();
55
56 /**
57 ** main()
58 **/
59
60 int
main(int argc,char * argv[])61 main(int argc, char *argv[])
62 {
63 extern char *getenv();
64
65 short bufsz = -1,
66 cps = -1;
67
68 char *TERM;
69
70 int sleep_time = 0;
71
72
73 /*
74 * Wait for the output to drain.
75 */
76 ioctl (1, TCSBRK, (struct termio *)1);
77
78 /*
79 * Decide how long to sleep.
80 */
81 if (argc != 2 || (sleep_time = atoi(argv[1])) < 0)
82 if ((TERM = getenv("TERM"))) {
83 tidbit (TERM, "bufsz", &bufsz);
84 tidbit (TERM, "cps", &cps);
85 if (cps > 0 && bufsz > 0)
86 sleep_time = LONG_ENOUGH(bufsz, cps);
87 } else
88 sleep_time = 2;
89
90 /*
91 * Wait ``long enough'' for the printer to finish
92 * printing what's in its buffer.
93 */
94 if (sleep_time)
95 sleep (sleep_time);
96
97 return (0);
98 }
99