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  1. /*
  2.  * Copyright (C) 1999-2001 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 Library General Public
  7.  * License as published by the Free Software Foundation; either version 2
  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.  * Library General Public License for more details.
  14.  *
  15.  * You should have received a copy of the GNU Library General Public
  16.  * License along with the GNU LIBICONV Library; see the file COPYING.LIB.
  17.  * If not, write to the Free Software Foundation, Inc., 51 Franklin Street,
  18.  * Fifth Floor, Boston, MA 02110-1301, USA.
  19.  */
  20.  
  21. /*
  22.  * CP866
  23.  */
  24.  
  25. static const unsigned short cp866_2uni[80] = {
  26.   /* 0xb0 */
  27.   0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x2561, 0x2562, 0x2556,
  28.   0x2555, 0x2563, 0x2551, 0x2557, 0x255d, 0x255c, 0x255b, 0x2510,
  29.   /* 0xc0 */
  30.   0x2514, 0x2534, 0x252c, 0x251c, 0x2500, 0x253c, 0x255e, 0x255f,
  31.   0x255a, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256c, 0x2567,
  32.   /* 0xd0 */
  33.   0x2568, 0x2564, 0x2565, 0x2559, 0x2558, 0x2552, 0x2553, 0x256b,
  34.   0x256a, 0x2518, 0x250c, 0x2588, 0x2584, 0x258c, 0x2590, 0x2580,
  35.   /* 0xe0 */
  36.   0x0440, 0x0441, 0x0442, 0x0443, 0x0444, 0x0445, 0x0446, 0x0447,
  37.   0x0448, 0x0449, 0x044a, 0x044b, 0x044c, 0x044d, 0x044e, 0x044f,
  38.   /* 0xf0 */
  39.   0x0401, 0x0451, 0x0404, 0x0454, 0x0407, 0x0457, 0x040e, 0x045e,
  40.   0x00b0, 0x2219, 0x00b7, 0x221a, 0x2116, 0x00a4, 0x25a0, 0x00a0,
  41. };
  42.  
  43. static int
  44. cp866_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
  45. {
  46.   unsigned char c = *s;
  47.   if (c < 0x80)
  48.     *pwc = (ucs4_t) c;
  49.   else if (c < 0xb0)
  50.     *pwc = (ucs4_t) c + 0x0390;
  51.   else
  52.     *pwc = (ucs4_t) cp866_2uni[c-0xb0];
  53.   return 1;
  54. }
  55.  
  56. static const unsigned char cp866_page00[24] = {
  57.   0xff, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x00, 0x00, /* 0xa0-0xa7 */
  58.   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa8-0xaf */
  59.   0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfa, /* 0xb0-0xb7 */
  60. };
  61. static const unsigned char cp866_page04[96] = {
  62.   0x00, 0xf0, 0x00, 0x00, 0xf2, 0x00, 0x00, 0xf4, /* 0x00-0x07 */
  63.   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf6, 0x00, /* 0x08-0x0f */
  64.   0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, /* 0x10-0x17 */
  65.   0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, /* 0x18-0x1f */
  66.   0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, /* 0x20-0x27 */
  67.   0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, /* 0x28-0x2f */
  68.   0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, /* 0x30-0x37 */
  69.   0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, /* 0x38-0x3f */
  70.   0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 0x40-0x47 */
  71.   0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, /* 0x48-0x4f */
  72.   0x00, 0xf1, 0x00, 0x00, 0xf3, 0x00, 0x00, 0xf5, /* 0x50-0x57 */
  73.   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf7, 0x00, /* 0x58-0x5f */
  74. };
  75. static const unsigned char cp866_page22[8] = {
  76.   0x00, 0xf9, 0xfb, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x18-0x1f */
  77. };
  78. static const unsigned char cp866_page25[168] = {
  79.   0xc4, 0x00, 0xb3, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x00-0x07 */
  80.   0x00, 0x00, 0x00, 0x00, 0xda, 0x00, 0x00, 0x00, /* 0x08-0x0f */
  81.   0xbf, 0x00, 0x00, 0x00, 0xc0, 0x00, 0x00, 0x00, /* 0x10-0x17 */
  82.   0xd9, 0x00, 0x00, 0x00, 0xc3, 0x00, 0x00, 0x00, /* 0x18-0x1f */
  83.   0x00, 0x00, 0x00, 0x00, 0xb4, 0x00, 0x00, 0x00, /* 0x20-0x27 */
  84.   0x00, 0x00, 0x00, 0x00, 0xc2, 0x00, 0x00, 0x00, /* 0x28-0x2f */
  85.   0x00, 0x00, 0x00, 0x00, 0xc1, 0x00, 0x00, 0x00, /* 0x30-0x37 */
  86.   0x00, 0x00, 0x00, 0x00, 0xc5, 0x00, 0x00, 0x00, /* 0x38-0x3f */
  87.   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x40-0x47 */
  88.   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x48-0x4f */
  89.   0xcd, 0xba, 0xd5, 0xd6, 0xc9, 0xb8, 0xb7, 0xbb, /* 0x50-0x57 */
  90.   0xd4, 0xd3, 0xc8, 0xbe, 0xbd, 0xbc, 0xc6, 0xc7, /* 0x58-0x5f */
  91.   0xcc, 0xb5, 0xb6, 0xb9, 0xd1, 0xd2, 0xcb, 0xcf, /* 0x60-0x67 */
  92.   0xd0, 0xca, 0xd8, 0xd7, 0xce, 0x00, 0x00, 0x00, /* 0x68-0x6f */
  93.   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x70-0x77 */
  94.   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x78-0x7f */
  95.   0xdf, 0x00, 0x00, 0x00, 0xdc, 0x00, 0x00, 0x00, /* 0x80-0x87 */
  96.   0xdb, 0x00, 0x00, 0x00, 0xdd, 0x00, 0x00, 0x00, /* 0x88-0x8f */
  97.   0xde, 0xb0, 0xb1, 0xb2, 0x00, 0x00, 0x00, 0x00, /* 0x90-0x97 */
  98.   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x98-0x9f */
  99.   0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa0-0xa7 */
  100. };
  101.  
  102. static int
  103. cp866_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
  104. {
  105.   unsigned char c = 0;
  106.   if (wc < 0x0080) {
  107.     *r = wc;
  108.     return 1;
  109.   }
  110.   else if (wc >= 0x00a0 && wc < 0x00b8)
  111.     c = cp866_page00[wc-0x00a0];
  112.   else if (wc >= 0x0400 && wc < 0x0460)
  113.     c = cp866_page04[wc-0x0400];
  114.   else if (wc == 0x2116)
  115.     c = 0xfc;
  116.   else if (wc >= 0x2218 && wc < 0x2220)
  117.     c = cp866_page22[wc-0x2218];
  118.   else if (wc >= 0x2500 && wc < 0x25a8)
  119.     c = cp866_page25[wc-0x2500];
  120.   if (c != 0) {
  121.     *r = c;
  122.     return 1;
  123.   }
  124.   return RET_ILUNI;
  125. }
  126.