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  */
33 
34 #include <sys/types.h>
35 #include <signal.h>
36 #include <stdio.h>
37 #include <unistd.h>
38 
39 int length = 66;
40 int lines;
41 
42 unsigned char koi2855 [] = {
43 0xc4, 0xb3, 0xda, 0xbf, 0xc0, 0xd9, 0xc3, 0xb4,
44 0xc2, 0xc1, 0xc5, 0xdf, 0xdc, 0xdb, 0xdb, 0xdb,
45 0xb0, 0xb1, 0xb2, 0xda, 0xfe, 0x2e, 0xad, 0x3d,
46 0xae, 0xaf, 0xff, 0xd9, 0xcf, 0x32, 0x2e, 0x25,
47 0xcd, 0xba, 0xc9, 0x84, 0xc9, 0xc9, 0xbb, 0xbb,
48 0xbb, 0xc8, 0xc8, 0xc8, 0xbc, 0xbc, 0xbc, 0xcc,
49 0xcc, 0xcc, 0xb9, 0x85, 0xb9, 0xb9, 0xcb, 0xcb,
50 0xcb, 0xca, 0xca, 0xca, 0xce, 0xce, 0xce, 0x43,
51 0x9c, 0xa0, 0xa2, 0xa4, 0xa6, 0xa8, 0xaa, 0xac,
52 0xb5, 0xb7, 0xbd, 0xc6, 0xd0, 0xd2, 0xd4, 0xd6,
53 0xd8, 0xde, 0xe1, 0xe3, 0xe5, 0xe7, 0xe9, 0xeb,
54 0xed, 0xf1, 0xf3, 0xf5, 0xf7, 0xf9, 0xfb, 0x9e,
55 0x9d, 0xa1, 0xa3, 0xa5, 0xa7, 0xa9, 0xab, 0xad,
56 0xb6, 0xb8, 0xbe, 0xc7, 0xd1, 0xd3, 0xd5, 0xd7,
57 0xdd, 0xe0, 0xe2, 0xe4, 0xe6, 0xe8, 0xea, 0xec,
58 0xee, 0xf2, 0xf4, 0xf6, 0xf8, 0xfa, 0xfc, 0x9f
59 };
60 
61 int main(int argc, char *argv[])
62 {
63 	int c, i;
64 	char *cp;
65 
66 	while (--argc) {
67 		if (*(cp = *++argv) == '-') {
68 			switch (*++cp) {
69 			case 'l':
70 				if ((i = atoi(++cp)) > 0)
71 					length = i;
72 				break;
73 			}
74 		}
75 	}
76 
77 	while ((c = getchar()) != EOF) {
78 		if (c == '\031') {
79 			if ((c = getchar()) == '\1') {
80 				lines = 0;
81 				fflush(stdout);
82 				kill(getpid(), SIGSTOP);
83 				continue;
84 			} else {
85 				ungetc(c, stdin);
86 				c = '\031';
87 			}
88 		} else if (c & 0x80) {
89 			putchar(koi2855[c & 0x7F]);
90 			continue;
91 		} else if (c == '\n')
92 			lines++;
93 		else if (c == '\f')
94 			lines = length;
95 		putchar(c);
96 		if (lines >= length) {
97 			lines = 0;
98 			fflush(stdout);
99 		}
100 	}
101 	return 0;
102 }
103