usr.sbin/lpr/filters.ru/koi2alt/koi2alt.c

   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 /*
  28  * KOI8-R -> CP866 conversion filter (Russian character sets)
  29  */
  30
  31 #include <sys/types.h>
  32 #include <signal.h>
  33 #include <stdio.h>
  34 #include <unistd.h>
  35
  36 int length = 66;
  37 int lines;
  38
  39 char *koi2alt[] = {
  40 /*         0      1      2      3      4      5      6      7   */
  41 /*         8      9      A      B      C      D      E      F   */
  42 /* 8 */ "\xc4","\xb3","\xda","\xbf","\xc0","\xd9","\xc3","\xb4",
  43         "\xc2","\xc1","\xc5","\xdf","\xdc","\xdb","\xdd","\xde",
  44 /* 9 */ "\xb0","\xb1","\xb2","\xb3","\xfe","\xf9","\xfb","-\b~",
  45         "<\b_",">\b_","\xff","\xb3","\xf8","2\b-","\xfa",":\b-",
  46 /* A */ "\xcd","\xba","\xd5","\xf1","\xd6","\xc9","\xb8","\xb7",
  47         "\xbb","\xd4","\xd3","\xc8","\xbe","\xbd","\xbc","\xc6",
  48 /* B */ "\xc7","\xcc","\xb5","\xf0","\xb6","\xb9","\xd1","\xd2",
  49         "\xcb","\xcf","\xd0","\xca","\xd8","\xd7","\xce","c\b_",
  50 /* C */ "\xee","\xa0","\xa1","\xe6","\xa4","\xa5","\xe4","\xa3",
  51         "\xe5","\xa8","\xa9","\xaa","\xab","\xac","\xad","\xae",
  52 /* D */ "\xaf","\xef","\xe0","\xe1","\xe2","\xe3","\xa6","\xa2",
  53         "\xec","\xeb","\xa7","\xe8","\xed","\xe9","\xe7","\xea",
  54 /* E */ "\x9e","\x80","\x81","\x96","\x84","\x85","\x94","\x83",
  55         "\x95","\x88","\x89","\x8a","\x8b","\x8c","\x8d","\x8e",
  56 /* F */ "\x8f","\x9f","\x90","\x91","\x92","\x93","\x86","\x82",
  57         "\x9c","\x9b","\x87","\x98","\x9d","\x99","\x97","\x9a"
  58 };
  59
  60 int main(int argc, char *argv[])
  61 {
  62         int c, i;
  63         char *cp;
  64
  65         while (--argc) {
  66                 if (*(cp = *++argv) == '-') {
  67                         switch (*++cp) {
  68                         case 'l':
  69                                 if ((i = atoi(++cp)) > 0)
  70                                         length = i;
  71                                 break;
  72                         }
  73                 }
  74         }
  75
  76         while ((c = getchar()) != EOF) {
  77                 if (c == '\031') {
  78                         if ((c = getchar()) == '\1') {
  79                                 lines = 0;
  80                                 fflush(stdout);
  81                                 kill(getpid(), SIGSTOP);
  82                                 continue;
  83                         } else {
  84                                 ungetc(c, stdin);
  85                                 c = '\031';
  86                         }
  87                 } else if (c & 0x80) {
  88                         fputs(koi2alt[c & 0x7F], stdout);
  89                         continue;
  90                 } else if (c == '\n')
  91                         lines++;
  92                 else if (c == '\f')
  93                         lines = length;
  94                 putchar(c);
  95                 if (lines >= length) {
  96                         lines = 0;
  97                         fflush(stdout);
  98                 }
  99         }
 100         return 0;
 101 }