1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (C) 1993-98 by Andrey A. Chernov, Moscow, Russia.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include "lp.cdefs.h"		/* A cross-platform version of <sys/cdefs.h> */
30__FBSDID("$FreeBSD$");
31
32/*
33 * KOI8-R -> CP866 conversion filter (Russian character sets)
34 */
35
36#include <sys/types.h>
37#include <signal.h>
38#include <stdio.h>
39#include <stdlib.h>
40#include <unistd.h>
41
42int length = 66;
43int lines;
44
45char *koi2alt[] = {
46/*         0      1      2      3      4      5      6      7   */
47/*         8      9      A      B      C      D      E      F   */
48/* 8 */ "\xc4","\xb3","\xda","\xbf","\xc0","\xd9","\xc3","\xb4",
49	"\xc2","\xc1","\xc5","\xdf","\xdc","\xdb","\xdd","\xde",
50/* 9 */ "\xb0","\xb1","\xb2","\xb3","\xfe","\xf9","\xfb","-\b~",
51	"<\b_",">\b_","\xff","\xb3","\xf8","2\b-","\xfa",":\b-",
52/* A */ "\xcd","\xba","\xd5","\xf1","\xd6","\xc9","\xb8","\xb7",
53	"\xbb","\xd4","\xd3","\xc8","\xbe","\xbd","\xbc","\xc6",
54/* B */ "\xc7","\xcc","\xb5","\xf0","\xb6","\xb9","\xd1","\xd2",
55	"\xcb","\xcf","\xd0","\xca","\xd8","\xd7","\xce","c\b_",
56/* C */ "\xee","\xa0","\xa1","\xe6","\xa4","\xa5","\xe4","\xa3",
57	"\xe5","\xa8","\xa9","\xaa","\xab","\xac","\xad","\xae",
58/* D */ "\xaf","\xef","\xe0","\xe1","\xe2","\xe3","\xa6","\xa2",
59	"\xec","\xeb","\xa7","\xe8","\xed","\xe9","\xe7","\xea",
60/* E */ "\x9e","\x80","\x81","\x96","\x84","\x85","\x94","\x83",
61	"\x95","\x88","\x89","\x8a","\x8b","\x8c","\x8d","\x8e",
62/* F */ "\x8f","\x9f","\x90","\x91","\x92","\x93","\x86","\x82",
63	"\x9c","\x9b","\x87","\x98","\x9d","\x99","\x97","\x9a"
64};
65
66int main(int argc, char *argv[])
67{
68	int c, i;
69	char *cp;
70
71	while (--argc) {
72		if (*(cp = *++argv) == '-') {
73			switch (*++cp) {
74			case 'l':
75				if ((i = atoi(++cp)) > 0)
76					length = i;
77				break;
78			}
79		}
80	}
81
82	while ((c = getchar()) != EOF) {
83		if (c == '\031') {
84			if ((c = getchar()) == '\1') {
85				lines = 0;
86				fflush(stdout);
87				kill(getpid(), SIGSTOP);
88				continue;
89			} else {
90				ungetc(c, stdin);
91				c = '\031';
92			}
93		} else if (c & 0x80) {
94			fputs(koi2alt[c & 0x7F], stdout);
95			continue;
96		} else if (c == '\n')
97			lines++;
98		else if (c == '\f')
99			lines = length;
100		putchar(c);
101		if (lines >= length) {
102			lines = 0;
103			fflush(stdout);
104		}
105	}
106	return 0;
107}
108