lib/cp1252.h

   1 /*
   2  * Copyright (C) 1999-2001, 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  * CP1252
  22  */
  23
  24 static const unsigned short cp1252_2uni[32] = {
  25   /* 0x80 */
  26   0x20ac, 0xfffd, 0x201a, 0x0192, 0x201e, 0x2026, 0x2020, 0x2021,
  27   0x02c6, 0x2030, 0x0160, 0x2039, 0x0152, 0xfffd, 0x017d, 0xfffd,
  28   /* 0x90 */
  29   0xfffd, 0x2018, 0x2019, 0x201c, 0x201d, 0x2022, 0x2013, 0x2014,
  30   0x02dc, 0x2122, 0x0161, 0x203a, 0x0153, 0xfffd, 0x017e, 0x0178,
  31 };
  32
  33 static int
  34 cp1252_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n)
  35 {
  36   unsigned char c = *s;
  37   if (c < 0x80 || c >= 0xa0) {
  38     *pwc = (ucs4_t) c;
  39     return 1;
  40   }
  41   else {
  42     unsigned short wc = cp1252_2uni[c-0x80];
  43     if (wc != 0xfffd) {
  44       *pwc = (ucs4_t) wc;
  45       return 1;
  46     }
  47   }
  48   return RET_ILSEQ;
  49 }
  50
  51 static const unsigned char cp1252_page01[72] = {
  52   0x00, 0x00, 0x8c, 0x9c, 0x00, 0x00, 0x00, 0x00, /* 0x50-0x57 */
  53   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x58-0x5f */
  54   0x8a, 0x9a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x60-0x67 */
  55   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x68-0x6f */
  56   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x70-0x77 */
  57   0x9f, 0x00, 0x00, 0x00, 0x00, 0x8e, 0x9e, 0x00, /* 0x78-0x7f */
  58   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x80-0x87 */
  59   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x88-0x8f */
  60   0x00, 0x00, 0x83, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x90-0x97 */
  61 };
  62 static const unsigned char cp1252_page02[32] = {
  63   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x88, 0x00, /* 0xc0-0xc7 */
  64   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xc8-0xcf */
  65   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xd0-0xd7 */
  66   0x00, 0x00, 0x00, 0x00, 0x98, 0x00, 0x00, 0x00, /* 0xd8-0xdf */
  67 };
  68 static const unsigned char cp1252_page20[48] = {
  69   0x00, 0x00, 0x00, 0x96, 0x97, 0x00, 0x00, 0x00, /* 0x10-0x17 */
  70   0x91, 0x92, 0x82, 0x00, 0x93, 0x94, 0x84, 0x00, /* 0x18-0x1f */
  71   0x86, 0x87, 0x95, 0x00, 0x00, 0x00, 0x85, 0x00, /* 0x20-0x27 */
  72   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x28-0x2f */
  73   0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x30-0x37 */
  74   0x00, 0x8b, 0x9b, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x38-0x3f */
  75 };
  76
  77 static int
  78 cp1252_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, size_t n)
  79 {
  80   unsigned char c = 0;
  81   if (wc < 0x0080) {
  82     *r = wc;
  83     return 1;
  84   }
  85   else if (wc >= 0x00a0 && wc < 0x0100)
  86     c = wc;
  87   else if (wc >= 0x0150 && wc < 0x0198)
  88     c = cp1252_page01[wc-0x0150];
  89   else if (wc >= 0x02c0 && wc < 0x02e0)
  90     c = cp1252_page02[wc-0x02c0];
  91   else if (wc >= 0x2010 && wc < 0x2040)
  92     c = cp1252_page20[wc-0x2010];
  93   else if (wc == 0x20ac)
  94     c = 0x80;
  95   else if (wc == 0x2122)
  96     c = 0x99;
  97   if (c != 0) {
  98     *r = c;
  99     return 1;
 100   }
 101   return RET_ILUNI;
 102 }