1 /*
2  * Copyright (C) 1999 by Andrey A. Chernov, Moscow, Russia.
3  * (C) 18 Sep 1999, Alex G. Bulushev (bag@demos.su)
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25  * SUCH DAMAGE.
26  */
27 
28 /*
29  * KOI8-R -> CP855 conversion filter (Russian character sets)
30  *
31  * $FreeBSD: src/usr.sbin/lpr/filters.ru/koi2855/koi2855.c,v 1.1 1999/09/21 20:42:10 ache Exp $
32  * $DragonFly: src/usr.sbin/lpr/filters.ru/koi2855/koi2855.c,v 1.3 2005/12/05 02:40:27 swildner Exp $
33  */
34 
35 #include <sys/types.h>
36 #include <signal.h>
37 #include <stdio.h>
38 #include <unistd.h>
39 
40 int length = 66;
41 int lines;
42 
43 unsigned char koi2855 [] = {
44 0xc4, 0xb3, 0xda, 0xbf, 0xc0, 0xd9, 0xc3, 0xb4,
45 0xc2, 0xc1, 0xc5, 0xdf, 0xdc, 0xdb, 0xdb, 0xdb,
46 0xb0, 0xb1, 0xb2, 0xda, 0xfe, 0x2e, 0xad, 0x3d,
47 0xae, 0xaf, 0xff, 0xd9, 0xcf, 0x32, 0x2e, 0x25,
48 0xcd, 0xba, 0xc9, 0x84, 0xc9, 0xc9, 0xbb, 0xbb,
49 0xbb, 0xc8, 0xc8, 0xc8, 0xbc, 0xbc, 0xbc, 0xcc,
50 0xcc, 0xcc, 0xb9, 0x85, 0xb9, 0xb9, 0xcb, 0xcb,
51 0xcb, 0xca, 0xca, 0xca, 0xce, 0xce, 0xce, 0x43,
52 0x9c, 0xa0, 0xa2, 0xa4, 0xa6, 0xa8, 0xaa, 0xac,
53 0xb5, 0xb7, 0xbd, 0xc6, 0xd0, 0xd2, 0xd4, 0xd6,
54 0xd8, 0xde, 0xe1, 0xe3, 0xe5, 0xe7, 0xe9, 0xeb,
55 0xed, 0xf1, 0xf3, 0xf5, 0xf7, 0xf9, 0xfb, 0x9e,
56 0x9d, 0xa1, 0xa3, 0xa5, 0xa7, 0xa9, 0xab, 0xad,
57 0xb6, 0xb8, 0xbe, 0xc7, 0xd1, 0xd3, 0xd5, 0xd7,
58 0xdd, 0xe0, 0xe2, 0xe4, 0xe6, 0xe8, 0xea, 0xec,
59 0xee, 0xf2, 0xf4, 0xf6, 0xf8, 0xfa, 0xfc, 0x9f
60 };
61 
62 int
63 main(int argc, char *argv[])
64 {
65 	int c, i;
66 	char *cp;
67 
68 	while (--argc) {
69 		if (*(cp = *++argv) == '-') {
70 			switch (*++cp) {
71 			case 'l':
72 				if ((i = atoi(++cp)) > 0)
73 					length = i;
74 				break;
75 			}
76 		}
77 	}
78 
79 	while ((c = getchar()) != EOF) {
80 		if (c == '\031') {
81 			if ((c = getchar()) == '\1') {
82 				lines = 0;
83 				fflush(stdout);
84 				kill(getpid(), SIGSTOP);
85 				continue;
86 			} else {
87 				ungetc(c, stdin);
88 				c = '\031';
89 			}
90 		} else if (c & 0x80) {
91 			putchar(koi2855[c & 0x7F]);
92 			continue;
93 		} else if (c == '\n')
94 			lines++;
95 		else if (c == '\f')
96 			lines = length;
97 		putchar(c);
98 		if (lines >= length) {
99 			lines = 0;
100 			fflush(stdout);
101 		}
102 	}
103 	return 0;
104 }
105