lib/tds565.h

   1 /*
   2  * Copyright (C) 1999-2002, 2016 Free Software Foundation, Inc.
   3  * This file is part of the GNU LIBICONV Library.
   4  *
   5  * The GNU LIBICONV Library is free software; you can redistribute it
   6  * and/or modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either version 2.1
   8  * of the License, or (at your option) any later version.
   9  *
  10  * The GNU LIBICONV Library is distributed in the hope that it will be
  11  * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with the GNU LIBICONV Library; see the file COPYING.LIB.
  17  * If not, see <https://www.gnu.org/licenses/>.
  18  */
  19
  20 /*
  21  * TDS565
  22  */
  23
  24 static const unsigned short tds565_2uni[64] = {
  25   /* 0x40 */
  26   0x0040, 0x0041, 0x0042, 0x00c7, 0x0044, 0x0045, 0x00c4, 0x0046,
  27   0x0047, 0x0048, 0x0049, 0x004a, 0x017d, 0x004b, 0x004c, 0x004d,
  28   /* 0x50 */
  29   0x004e, 0x0147, 0x004f, 0x00d6, 0x0050, 0x0052, 0x0053, 0x015e,
  30   0x0054, 0x0055, 0x00dc, 0x0057, 0x0059, 0x00dd, 0x005a, 0x005f,
  31   /* 0x60 */
  32   0x2116, 0x0061, 0x0062, 0x00e7, 0x0064, 0x0065, 0x00e4, 0x0066,
  33   0x0067, 0x0068, 0x0069, 0x006a, 0x017e, 0x006b, 0x006c, 0x006d,
  34   /* 0x70 */
  35   0x006e, 0x0148, 0x006f, 0x00f6, 0x0070, 0x0072, 0x0073, 0x015f,
  36   0x0074, 0x0075, 0x00fc, 0x0077, 0x0079, 0x00fd, 0x007a, 0x007f,
  37 };
  38
  39 static int
  40 tds565_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n)
  41 {
  42   unsigned char c = *s;
  43   if (c < 0x40) {
  44     *pwc = (ucs4_t) c;
  45     return 1;
  46   }
  47   else if (c < 0x80) {
  48     *pwc = (ucs4_t) tds565_2uni[c-0x40];
  49     return 1;
  50   }
  51   return RET_ILSEQ;
  52 }
  53
  54 static const unsigned char tds565_page00[64] = {
  55   0x40, 0x41, 0x42, 0x00, 0x44, 0x45, 0x47, 0x48, /* 0x40-0x47 */
  56   0x49, 0x4a, 0x4b, 0x4d, 0x4e, 0x4f, 0x50, 0x52, /* 0x48-0x4f */
  57   0x54, 0x00, 0x55, 0x56, 0x58, 0x59, 0x00, 0x5b, /* 0x50-0x57 */
  58   0x00, 0x5c, 0x5e, 0x00, 0x00, 0x00, 0x00, 0x5f, /* 0x58-0x5f */
  59   0x00, 0x61, 0x62, 0x00, 0x64, 0x65, 0x67, 0x68, /* 0x60-0x67 */
  60   0x69, 0x6a, 0x6b, 0x6d, 0x6e, 0x6f, 0x70, 0x72, /* 0x68-0x6f */
  61   0x74, 0x00, 0x75, 0x76, 0x78, 0x79, 0x00, 0x7b, /* 0x70-0x77 */
  62   0x00, 0x7c, 0x7e, 0x00, 0x00, 0x00, 0x00, 0x7f, /* 0x78-0x7f */
  63 };
  64 static const unsigned char tds565_page00_1[64] = {
  65   0x00, 0x00, 0x00, 0x00, 0x46, 0x00, 0x00, 0x43, /* 0xc0-0xc7 */
  66   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xc8-0xcf */
  67   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x53, 0x00, /* 0xd0-0xd7 */
  68   0x00, 0x00, 0x00, 0x00, 0x5a, 0x5d, 0x00, 0x00, /* 0xd8-0xdf */
  69   0x00, 0x00, 0x00, 0x00, 0x66, 0x00, 0x00, 0x63, /* 0xe0-0xe7 */
  70   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xe8-0xef */
  71   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x73, 0x00, /* 0xf0-0xf7 */
  72   0x00, 0x00, 0x00, 0x00, 0x7a, 0x7d, 0x00, 0x00, /* 0xf8-0xff */
  73 };
  74 static const unsigned char tds565_page01[64] = {
  75   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x51, /* 0x40-0x47 */
  76   0x71, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x48-0x4f */
  77   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x50-0x57 */
  78   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x57, 0x77, /* 0x58-0x5f */
  79   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x60-0x67 */
  80   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x68-0x6f */
  81   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x70-0x77 */
  82   0x00, 0x00, 0x00, 0x00, 0x00, 0x4c, 0x6c, 0x00, /* 0x78-0x7f */
  83 };
  84
  85 static int
  86 tds565_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, size_t n)
  87 {
  88   unsigned char c = 0;
  89   if (wc < 0x0040) {
  90     *r = wc;
  91     return 1;
  92   }
  93   else if (wc >= 0x0040 && wc < 0x0080)
  94     c = tds565_page00[wc-0x0040];
  95   else if (wc >= 0x00c0 && wc < 0x0100)
  96     c = tds565_page00_1[wc-0x00c0];
  97   else if (wc >= 0x0140 && wc < 0x0180)
  98     c = tds565_page01[wc-0x0140];
  99   else if (wc == 0x2116)
 100     c = 0x60;
 101   if (c != 0) {
 102     *r = c;
 103     return 1;
 104   }
 105   return RET_ILUNI;
 106 }