lib/cp1133.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  * IBM-CP1133
  22  */
  23
  24 static const unsigned short cp1133_2uni_1[64] = {
  25   /* 0xa0 */
  26   0x00a0, 0x0e81, 0x0e82, 0x0e84, 0x0e87, 0x0e88, 0x0eaa, 0x0e8a,
  27   0x0e8d, 0x0e94, 0x0e95, 0x0e96, 0x0e97, 0x0e99, 0x0e9a, 0x0e9b,
  28   /* 0xb0 */
  29   0x0e9c, 0x0e9d, 0x0e9e, 0x0e9f, 0x0ea1, 0x0ea2, 0x0ea3, 0x0ea5,
  30   0x0ea7, 0x0eab, 0x0ead, 0x0eae, 0xfffd, 0xfffd, 0xfffd, 0x0eaf,
  31   /* 0xc0 */
  32   0x0eb0, 0x0eb2, 0x0eb3, 0x0eb4, 0x0eb5, 0x0eb6, 0x0eb7, 0x0eb8,
  33   0x0eb9, 0x0ebc, 0x0eb1, 0x0ebb, 0x0ebd, 0xfffd, 0xfffd, 0xfffd,
  34   /* 0xd0 */
  35   0x0ec0, 0x0ec1, 0x0ec2, 0x0ec3, 0x0ec4, 0x0ec8, 0x0ec9, 0x0eca,
  36   0x0ecb, 0x0ecc, 0x0ecd, 0x0ec6, 0xfffd, 0x0edc, 0x0edd, 0x20ad,
  37 };
  38 static const unsigned short cp1133_2uni_2[16] = {
  39   /* 0xf0 */
  40   0x0ed0, 0x0ed1, 0x0ed2, 0x0ed3, 0x0ed4, 0x0ed5, 0x0ed6, 0x0ed7,
  41   0x0ed8, 0x0ed9, 0xfffd, 0xfffd, 0x00a2, 0x00ac, 0x00a6, 0xfffd,
  42 };
  43
  44 static int
  45 cp1133_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n)
  46 {
  47   unsigned char c = *s;
  48   if (c < 0xa0) {
  49     *pwc = (ucs4_t) c;
  50     return 1;
  51   }
  52   else if (c < 0xe0) {
  53     unsigned short wc = cp1133_2uni_1[c-0xa0];
  54     if (wc != 0xfffd) {
  55       *pwc = (ucs4_t) wc;
  56       return 1;
  57     }
  58   }
  59   else if (c < 0xf0) {
  60   }
  61   else {
  62     unsigned short wc = cp1133_2uni_2[c-0xf0];
  63     if (wc != 0xfffd) {
  64       *pwc = (ucs4_t) wc;
  65       return 1;
  66     }
  67   }
  68   return RET_ILSEQ;
  69 }
  70
  71 static const unsigned char cp1133_page00[16] = {
  72   0xa0, 0x00, 0xfc, 0x00, 0x00, 0x00, 0xfe, 0x00, /* 0xa0-0xa7 */
  73   0x00, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x00, 0x00, /* 0xa8-0xaf */
  74 };
  75 static const unsigned char cp1133_page0e[96] = {
  76   0x00, 0xa1, 0xa2, 0x00, 0xa3, 0x00, 0x00, 0xa4, /* 0x80-0x87 */
  77   0xa5, 0x00, 0xa7, 0x00, 0x00, 0xa8, 0x00, 0x00, /* 0x88-0x8f */
  78   0x00, 0x00, 0x00, 0x00, 0xa9, 0xaa, 0xab, 0xac, /* 0x90-0x97 */
  79   0x00, 0xad, 0xae, 0xaf, 0xb0, 0xb1, 0xb2, 0xb3, /* 0x98-0x9f */
  80   0x00, 0xb4, 0xb5, 0xb6, 0x00, 0xb7, 0x00, 0xb8, /* 0xa0-0xa7 */
  81   0x00, 0x00, 0xa6, 0xb9, 0x00, 0xba, 0xbb, 0xbf, /* 0xa8-0xaf */
  82   0xc0, 0xca, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, /* 0xb0-0xb7 */
  83   0xc7, 0xc8, 0x00, 0xcb, 0xc9, 0xcc, 0x00, 0x00, /* 0xb8-0xbf */
  84   0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0x00, 0xdb, 0x00, /* 0xc0-0xc7 */
  85   0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0x00, 0x00, /* 0xc8-0xcf */
  86   0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* 0xd0-0xd7 */
  87   0xf8, 0xf9, 0x00, 0x00, 0xdd, 0xde, 0x00, 0x00, /* 0xd8-0xdf */
  88 };
  89
  90 static int
  91 cp1133_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, size_t n)
  92 {
  93   unsigned char c = 0;
  94   if (wc < 0x00a0) {
  95     *r = wc;
  96     return 1;
  97   }
  98   else if (wc >= 0x00a0 && wc < 0x00b0)
  99     c = cp1133_page00[wc-0x00a0];
 100   else if (wc >= 0x0e80 && wc < 0x0ee0)
 101     c = cp1133_page0e[wc-0x0e80];
 102   else if (wc == 0x20ad)
 103     c = 0xdf;
 104   if (c != 0) {
 105     *r = c;
 106     return 1;
 107   }
 108   return RET_ILUNI;
 109 }