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