1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
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/*
32 * KOI8-R -> CP855 conversion filter (Russian character sets)
33 */
34
35#include <sys/types.h>
36#include <signal.h>
37#include <stdio.h>
38#include <stdlib.h>
39#include <unistd.h>
40
41int length = 66;
42int lines;
43
44unsigned char koi2855 [] = {
450xc4, 0xb3, 0xda, 0xbf, 0xc0, 0xd9, 0xc3, 0xb4,
460xc2, 0xc1, 0xc5, 0xdf, 0xdc, 0xdb, 0xdb, 0xdb,
470xb0, 0xb1, 0xb2, 0xda, 0xfe, 0x2e, 0xad, 0x3d,
480xae, 0xaf, 0xff, 0xd9, 0xcf, 0x32, 0x2e, 0x25,
490xcd, 0xba, 0xc9, 0x84, 0xc9, 0xc9, 0xbb, 0xbb,
500xbb, 0xc8, 0xc8, 0xc8, 0xbc, 0xbc, 0xbc, 0xcc,
510xcc, 0xcc, 0xb9, 0x85, 0xb9, 0xb9, 0xcb, 0xcb,
520xcb, 0xca, 0xca, 0xca, 0xce, 0xce, 0xce, 0x43,
530x9c, 0xa0, 0xa2, 0xa4, 0xa6, 0xa8, 0xaa, 0xac,
540xb5, 0xb7, 0xbd, 0xc6, 0xd0, 0xd2, 0xd4, 0xd6,
550xd8, 0xde, 0xe1, 0xe3, 0xe5, 0xe7, 0xe9, 0xeb,
560xed, 0xf1, 0xf3, 0xf5, 0xf7, 0xf9, 0xfb, 0x9e,
570x9d, 0xa1, 0xa3, 0xa5, 0xa7, 0xa9, 0xab, 0xad,
580xb6, 0xb8, 0xbe, 0xc7, 0xd1, 0xd3, 0xd5, 0xd7,
590xdd, 0xe0, 0xe2, 0xe4, 0xe6, 0xe8, 0xea, 0xec,
600xee, 0xf2, 0xf4, 0xf6, 0xf8, 0xfa, 0xfc, 0x9f
61};
62
63int 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