1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (C) 1999 by Andrey A. Chernov, Moscow, Russia.
5  * (C) 18 Sep 1999, Alex G. Bulushev (bag@demos.su)
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  */
29 
30 #include "lp.cdefs.h"		/* A cross-platform version of <sys/cdefs.h> */
31 __FBSDID("$FreeBSD$");
32 
33 /*
34  * KOI8-R -> CP855 conversion filter (Russian character sets)
35  */
36 
37 #include <sys/types.h>
38 #include <signal.h>
39 #include <stdio.h>
40 #include <stdlib.h>
41 #include <unistd.h>
42 
43 int length = 66;
44 int lines;
45 
46 unsigned char koi2855 [] = {
47 0xc4, 0xb3, 0xda, 0xbf, 0xc0, 0xd9, 0xc3, 0xb4,
48 0xc2, 0xc1, 0xc5, 0xdf, 0xdc, 0xdb, 0xdb, 0xdb,
49 0xb0, 0xb1, 0xb2, 0xda, 0xfe, 0x2e, 0xad, 0x3d,
50 0xae, 0xaf, 0xff, 0xd9, 0xcf, 0x32, 0x2e, 0x25,
51 0xcd, 0xba, 0xc9, 0x84, 0xc9, 0xc9, 0xbb, 0xbb,
52 0xbb, 0xc8, 0xc8, 0xc8, 0xbc, 0xbc, 0xbc, 0xcc,
53 0xcc, 0xcc, 0xb9, 0x85, 0xb9, 0xb9, 0xcb, 0xcb,
54 0xcb, 0xca, 0xca, 0xca, 0xce, 0xce, 0xce, 0x43,
55 0x9c, 0xa0, 0xa2, 0xa4, 0xa6, 0xa8, 0xaa, 0xac,
56 0xb5, 0xb7, 0xbd, 0xc6, 0xd0, 0xd2, 0xd4, 0xd6,
57 0xd8, 0xde, 0xe1, 0xe3, 0xe5, 0xe7, 0xe9, 0xeb,
58 0xed, 0xf1, 0xf3, 0xf5, 0xf7, 0xf9, 0xfb, 0x9e,
59 0x9d, 0xa1, 0xa3, 0xa5, 0xa7, 0xa9, 0xab, 0xad,
60 0xb6, 0xb8, 0xbe, 0xc7, 0xd1, 0xd3, 0xd5, 0xd7,
61 0xdd, 0xe0, 0xe2, 0xe4, 0xe6, 0xe8, 0xea, 0xec,
62 0xee, 0xf2, 0xf4, 0xf6, 0xf8, 0xfa, 0xfc, 0x9f
63 };
64 
65 int main(int argc, char *argv[])
66 {
67 	int c, i;
68 	char *cp;
69 
70 	while (--argc) {
71 		if (*(cp = *++argv) == '-') {
72 			switch (*++cp) {
73 			case 'l':
74 				if ((i = atoi(++cp)) > 0)
75 					length = i;
76 				break;
77 			}
78 		}
79 	}
80 
81 	while ((c = getchar()) != EOF) {
82 		if (c == '\031') {
83 			if ((c = getchar()) == '\1') {
84 				lines = 0;
85 				fflush(stdout);
86 				kill(getpid(), SIGSTOP);
87 				continue;
88 			} else {
89 				ungetc(c, stdin);
90 				c = '\031';
91 			}
92 		} else if (c & 0x80) {
93 			putchar(koi2855[c & 0x7F]);
94 			continue;
95 		} else if (c == '\n')
96 			lines++;
97 		else if (c == '\f')
98 			lines = length;
99 		putchar(c);
100 		if (lines >= length) {
101 			lines = 0;
102 			fflush(stdout);
103 		}
104 	}
105 	return 0;
106 }
107