1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
/* $OpenBSD: lib_print.c,v 1.5 2010/01/12 23:22:06 nicm Exp $ */
/****************************************************************************
* Copyright (c) 1998-2002,2006 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/****************************************************************************
* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
****************************************************************************/
#include <curses.priv.h>
#include <term.h>
MODULE_ID("$Id: lib_print.c,v 1.5 2010/01/12 23:22:06 nicm Exp $")
NCURSES_EXPORT(int)
mcprint(char *data, int len)
/* ship binary character data to the printer via mc4/mc5/mc5p */
{
char *mybuf, *switchon;
size_t onsize, offsize, res;
errno = 0;
if (!cur_term || (!prtr_non && (!prtr_on || !prtr_off))) {
errno = ENODEV;
return (ERR);
}
if (prtr_non) {
switchon = TPARM_1(prtr_non, len);
onsize = strlen(switchon);
offsize = 0;
} else {
switchon = prtr_on;
onsize = strlen(prtr_on);
offsize = strlen(prtr_off);
}
res = onsize + len + offsize + 1;
if (switchon == 0 || (mybuf = typeMalloc(char, res)) == 0) {
errno = ENOMEM;
return (ERR);
}
(void) strlcpy(mybuf, switchon, res);
memcpy(mybuf + onsize, data, (unsigned) len);
if (offsize)
(void) strlcpy(mybuf + onsize + len, prtr_off, res - onsize - len);
/*
* We're relying on the atomicity of UNIX writes here. The
* danger is that output from a refresh() might get interspersed
* with the printer data after the write call returns but before the
* data has actually been shipped to the terminal. If the write(2)
* operation is truly atomic we're protected from this.
*/
res = write(cur_term->Filedes, mybuf, onsize + len + offsize);
/*
* By giving up our scheduler slot here we increase the odds that the
* kernel will ship the contiguous clist items from the last write
* immediately.
*/
(void) sleep(0);
free(mybuf);
return (res);
}
|
