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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.  * CP1251
  23.  */
  24.  
  25. static const unsigned short cp1251_2uni[128] = {
  26.   /* 0x80 */
  27.   0x0402, 0x0403, 0x201a, 0x0453, 0x201e, 0x2026, 0x2020, 0x2021,
  28.   0x20ac, 0x2030, 0x0409, 0x2039, 0x040a, 0x040c, 0x040b, 0x040f,
  29.   /* 0x90 */
  30.   0x0452, 0x2018, 0x2019, 0x201c, 0x201d, 0x2022, 0x2013, 0x2014,
  31.   0xfffd, 0x2122, 0x0459, 0x203a, 0x045a, 0x045c, 0x045b, 0x045f,
  32.   /* 0xa0 */
  33.   0x00a0, 0x040e, 0x045e, 0x0408, 0x00a4, 0x0490, 0x00a6, 0x00a7,
  34.   0x0401, 0x00a9, 0x0404, 0x00ab, 0x00ac, 0x00ad, 0x00ae, 0x0407,
  35.   /* 0xb0 */
  36.   0x00b0, 0x00b1, 0x0406, 0x0456, 0x0491, 0x00b5, 0x00b6, 0x00b7,
  37.   0x0451, 0x2116, 0x0454, 0x00bb, 0x0458, 0x0405, 0x0455, 0x0457,
  38.   /* 0xc0 */
  39.   0x0410, 0x0411, 0x0412, 0x0413, 0x0414, 0x0415, 0x0416, 0x0417,
  40.   0x0418, 0x0419, 0x041a, 0x041b, 0x041c, 0x041d, 0x041e, 0x041f,
  41.   /* 0xd0 */
  42.   0x0420, 0x0421, 0x0422, 0x0423, 0x0424, 0x0425, 0x0426, 0x0427,
  43.   0x0428, 0x0429, 0x042a, 0x042b, 0x042c, 0x042d, 0x042e, 0x042f,
  44.   /* 0xe0 */
  45.   0x0430, 0x0431, 0x0432, 0x0433, 0x0434, 0x0435, 0x0436, 0x0437,
  46.   0x0438, 0x0439, 0x043a, 0x043b, 0x043c, 0x043d, 0x043e, 0x043f,
  47.   /* 0xf0 */
  48.   0x0440, 0x0441, 0x0442, 0x0443, 0x0444, 0x0445, 0x0446, 0x0447,
  49.   0x0448, 0x0449, 0x044a, 0x044b, 0x044c, 0x044d, 0x044e, 0x044f,
  50. };
  51.  
  52. static int
  53. cp1251_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
  54. {
  55.   unsigned char c = *s;
  56.   if (c < 0x80) {
  57.     *pwc = (ucs4_t) c;
  58.     return 1;
  59.   }
  60.   else {
  61.     unsigned short wc = cp1251_2uni[c-0x80];
  62.     if (wc != 0xfffd) {
  63.       *pwc = (ucs4_t) wc;
  64.       return 1;
  65.     }
  66.   }
  67.   return RET_ILSEQ;
  68. }
  69.  
  70. static const unsigned char cp1251_page00[32] = {
  71.   0xa0, 0x00, 0x00, 0x00, 0xa4, 0x00, 0xa6, 0xa7, /* 0xa0-0xa7 */
  72.   0x00, 0xa9, 0x00, 0xab, 0xac, 0xad, 0xae, 0x00, /* 0xa8-0xaf */
  73.   0xb0, 0xb1, 0x00, 0x00, 0x00, 0xb5, 0xb6, 0xb7, /* 0xb0-0xb7 */
  74.   0x00, 0x00, 0x00, 0xbb, 0x00, 0x00, 0x00, 0x00, /* 0xb8-0xbf */
  75. };
  76. static const unsigned char cp1251_page04[152] = {
  77.   0x00, 0xa8, 0x80, 0x81, 0xaa, 0xbd, 0xb2, 0xaf, /* 0x00-0x07 */
  78.   0xa3, 0x8a, 0x8c, 0x8e, 0x8d, 0x00, 0xa1, 0x8f, /* 0x08-0x0f */
  79.   0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 0x10-0x17 */
  80.   0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, /* 0x18-0x1f */
  81.   0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, /* 0x20-0x27 */
  82.   0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, /* 0x28-0x2f */
  83.   0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 0x30-0x37 */
  84.   0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, /* 0x38-0x3f */
  85.   0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* 0x40-0x47 */
  86.   0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, /* 0x48-0x4f */
  87.   0x00, 0xb8, 0x90, 0x83, 0xba, 0xbe, 0xb3, 0xbf, /* 0x50-0x57 */
  88.   0xbc, 0x9a, 0x9c, 0x9e, 0x9d, 0x00, 0xa2, 0x9f, /* 0x58-0x5f */
  89.   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x60-0x67 */
  90.   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x68-0x6f */
  91.   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x70-0x77 */
  92.   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x78-0x7f */
  93.   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x80-0x87 */
  94.   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x88-0x8f */
  95.   0xa5, 0xb4, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x90-0x97 */
  96. };
  97. static const unsigned char cp1251_page20[48] = {
  98.   0x00, 0x00, 0x00, 0x96, 0x97, 0x00, 0x00, 0x00, /* 0x10-0x17 */
  99.   0x91, 0x92, 0x82, 0x00, 0x93, 0x94, 0x84, 0x00, /* 0x18-0x1f */
  100.   0x86, 0x87, 0x95, 0x00, 0x00, 0x00, 0x85, 0x00, /* 0x20-0x27 */
  101.   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x28-0x2f */
  102.   0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x30-0x37 */
  103.   0x00, 0x8b, 0x9b, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x38-0x3f */
  104. };
  105.  
  106. static int
  107. cp1251_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
  108. {
  109.   unsigned char c = 0;
  110.   if (wc < 0x0080) {
  111.     *r = wc;
  112.     return 1;
  113.   }
  114.   else if (wc >= 0x00a0 && wc < 0x00c0)
  115.     c = cp1251_page00[wc-0x00a0];
  116.   else if (wc >= 0x0400 && wc < 0x0498)
  117.     c = cp1251_page04[wc-0x0400];
  118.   else if (wc >= 0x2010 && wc < 0x2040)
  119.     c = cp1251_page20[wc-0x2010];
  120.   else if (wc == 0x20ac)
  121.     c = 0x88;
  122.   else if (wc == 0x2116)
  123.     c = 0xb9;
  124.   else if (wc == 0x2122)
  125.     c = 0x99;
  126.   if (c != 0) {
  127.     *r = c;
  128.     return 1;
  129.   }
  130.   return RET_ILUNI;
  131. }
  132.