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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.  * CP1252
  23.  */
  24.  
  25. static const unsigned short cp1252_2uni[32] = {
  26.   /* 0x80 */
  27.   0x20ac, 0xfffd, 0x201a, 0x0192, 0x201e, 0x2026, 0x2020, 0x2021,
  28.   0x02c6, 0x2030, 0x0160, 0x2039, 0x0152, 0xfffd, 0x017d, 0xfffd,
  29.   /* 0x90 */
  30.   0xfffd, 0x2018, 0x2019, 0x201c, 0x201d, 0x2022, 0x2013, 0x2014,
  31.   0x02dc, 0x2122, 0x0161, 0x203a, 0x0153, 0xfffd, 0x017e, 0x0178,
  32. };
  33.  
  34. static int
  35. cp1252_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
  36. {
  37.   unsigned char c = *s;
  38.   if (c < 0x80 || c >= 0xa0) {
  39.     *pwc = (ucs4_t) c;
  40.     return 1;
  41.   }
  42.   else {
  43.     unsigned short wc = cp1252_2uni[c-0x80];
  44.     if (wc != 0xfffd) {
  45.       *pwc = (ucs4_t) wc;
  46.       return 1;
  47.     }
  48.   }
  49.   return RET_ILSEQ;
  50. }
  51.  
  52. static const unsigned char cp1252_page01[72] = {
  53.   0x00, 0x00, 0x8c, 0x9c, 0x00, 0x00, 0x00, 0x00, /* 0x50-0x57 */
  54.   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x58-0x5f */
  55.   0x8a, 0x9a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x60-0x67 */
  56.   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x68-0x6f */
  57.   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x70-0x77 */
  58.   0x9f, 0x00, 0x00, 0x00, 0x00, 0x8e, 0x9e, 0x00, /* 0x78-0x7f */
  59.   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x80-0x87 */
  60.   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x88-0x8f */
  61.   0x00, 0x00, 0x83, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x90-0x97 */
  62. };
  63. static const unsigned char cp1252_page02[32] = {
  64.   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x88, 0x00, /* 0xc0-0xc7 */
  65.   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xc8-0xcf */
  66.   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xd0-0xd7 */
  67.   0x00, 0x00, 0x00, 0x00, 0x98, 0x00, 0x00, 0x00, /* 0xd8-0xdf */
  68. };
  69. static const unsigned char cp1252_page20[48] = {
  70.   0x00, 0x00, 0x00, 0x96, 0x97, 0x00, 0x00, 0x00, /* 0x10-0x17 */
  71.   0x91, 0x92, 0x82, 0x00, 0x93, 0x94, 0x84, 0x00, /* 0x18-0x1f */
  72.   0x86, 0x87, 0x95, 0x00, 0x00, 0x00, 0x85, 0x00, /* 0x20-0x27 */
  73.   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x28-0x2f */
  74.   0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x30-0x37 */
  75.   0x00, 0x8b, 0x9b, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x38-0x3f */
  76. };
  77.  
  78. static int
  79. cp1252_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
  80. {
  81.   unsigned char c = 0;
  82.   if (wc < 0x0080) {
  83.     *r = wc;
  84.     return 1;
  85.   }
  86.   else if (wc >= 0x00a0 && wc < 0x0100)
  87.     c = wc;
  88.   else if (wc >= 0x0150 && wc < 0x0198)
  89.     c = cp1252_page01[wc-0x0150];
  90.   else if (wc >= 0x02c0 && wc < 0x02e0)
  91.     c = cp1252_page02[wc-0x02c0];
  92.   else if (wc >= 0x2010 && wc < 0x2040)
  93.     c = cp1252_page20[wc-0x2010];
  94.   else if (wc == 0x20ac)
  95.     c = 0x80;
  96.   else if (wc == 0x2122)
  97.     c = 0x99;
  98.   if (c != 0) {
  99.     *r = c;
  100.     return 1;
  101.   }
  102.   return RET_ILUNI;
  103. }
  104.