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