lib/armscii_8.h

   1 /*
   2  * Copyright (C) 1999-2002, 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  * ARMSCII-8
  22  */
  23
  24 static const unsigned short armscii_8_2uni[96] = {
  25   /* 0xa0 */
  26   0x00a0, 0xfffd, 0x0587, 0x0589, 0x0029, 0x0028, 0x00bb, 0x00ab,
  27   0x2014, 0x002e, 0x055d, 0x002c, 0x002d, 0x058a, 0x2026, 0x055c,
  28   /* 0xb0 */
  29   0x055b, 0x055e, 0x0531, 0x0561, 0x0532, 0x0562, 0x0533, 0x0563,
  30   0x0534, 0x0564, 0x0535, 0x0565, 0x0536, 0x0566, 0x0537, 0x0567,
  31   /* 0xc0 */
  32   0x0538, 0x0568, 0x0539, 0x0569, 0x053a, 0x056a, 0x053b, 0x056b,
  33   0x053c, 0x056c, 0x053d, 0x056d, 0x053e, 0x056e, 0x053f, 0x056f,
  34   /* 0xd0 */
  35   0x0540, 0x0570, 0x0541, 0x0571, 0x0542, 0x0572, 0x0543, 0x0573,
  36   0x0544, 0x0574, 0x0545, 0x0575, 0x0546, 0x0576, 0x0547, 0x0577,
  37   /* 0xe0 */
  38   0x0548, 0x0578, 0x0549, 0x0579, 0x054a, 0x057a, 0x054b, 0x057b,
  39   0x054c, 0x057c, 0x054d, 0x057d, 0x054e, 0x057e, 0x054f, 0x057f,
  40   /* 0xf0 */
  41   0x0550, 0x0580, 0x0551, 0x0581, 0x0552, 0x0582, 0x0553, 0x0583,
  42   0x0554, 0x0584, 0x0555, 0x0585, 0x0556, 0x0586, 0x055a, 0xfffd,
  43 };
  44
  45 static int
  46 armscii_8_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n)
  47 {
  48   unsigned char c = *s;
  49   if (c < 0xa0) {
  50     *pwc = (ucs4_t) c;
  51     return 1;
  52   }
  53   else {
  54     unsigned short wc = armscii_8_2uni[c-0xa0];
  55     if (wc != 0xfffd) {
  56       *pwc = (ucs4_t) wc;
  57       return 1;
  58     }
  59   }
  60   return RET_ILSEQ;
  61 }
  62
  63 static const unsigned char armscii_8_page00[8] = {
  64   0xa5, 0xa4, 0x2a, 0x2b, 0xab, 0xac, 0xa9, 0x2f, /* 0x28-0x2f */
  65 };
  66 static const unsigned char armscii_8_page00_1[32] = {
  67   0xa0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa0-0xa7 */
  68   0x00, 0x00, 0x00, 0xa7, 0x00, 0x00, 0x00, 0x00, /* 0xa8-0xaf */
  69   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xb0-0xb7 */
  70   0x00, 0x00, 0x00, 0xa6, 0x00, 0x00, 0x00, 0x00, /* 0xb8-0xbf */
  71 };
  72 static const unsigned char armscii_8_page05[96] = {
  73   0x00, 0xb2, 0xb4, 0xb6, 0xb8, 0xba, 0xbc, 0xbe, /* 0x30-0x37 */
  74   0xc0, 0xc2, 0xc4, 0xc6, 0xc8, 0xca, 0xcc, 0xce, /* 0x38-0x3f */
  75   0xd0, 0xd2, 0xd4, 0xd6, 0xd8, 0xda, 0xdc, 0xde, /* 0x40-0x47 */
  76   0xe0, 0xe2, 0xe4, 0xe6, 0xe8, 0xea, 0xec, 0xee, /* 0x48-0x4f */
  77   0xf0, 0xf2, 0xf4, 0xf6, 0xf8, 0xfa, 0xfc, 0x00, /* 0x50-0x57 */
  78   0x00, 0x00, 0xfe, 0xb0, 0xaf, 0xaa, 0xb1, 0x00, /* 0x58-0x5f */
  79   0x00, 0xb3, 0xb5, 0xb7, 0xb9, 0xbb, 0xbd, 0xbf, /* 0x60-0x67 */
  80   0xc1, 0xc3, 0xc5, 0xc7, 0xc9, 0xcb, 0xcd, 0xcf, /* 0x68-0x6f */
  81   0xd1, 0xd3, 0xd5, 0xd7, 0xd9, 0xdb, 0xdd, 0xdf, /* 0x70-0x77 */
  82   0xe1, 0xe3, 0xe5, 0xe7, 0xe9, 0xeb, 0xed, 0xef, /* 0x78-0x7f */
  83   0xf1, 0xf3, 0xf5, 0xf7, 0xf9, 0xfb, 0xfd, 0xa2, /* 0x80-0x87 */
  84   0x00, 0xa3, 0xad, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x88-0x8f */
  85 };
  86 static const unsigned char armscii_8_page20[24] = {
  87   0x00, 0x00, 0x00, 0x00, 0xa8, 0x00, 0x00, 0x00, /* 0x10-0x17 */
  88   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x18-0x1f */
  89   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xae, 0x00, /* 0x20-0x27 */
  90 };
  91
  92 static int
  93 armscii_8_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, size_t n)
  94 {
  95   unsigned char c = 0;
  96   if (wc < 0x0028) {
  97     *r = wc;
  98     return 1;
  99   }
 100   else if (wc >= 0x0028 && wc < 0x0030)
 101     c = armscii_8_page00[wc-0x0028];
 102   else if (wc >= 0x0030 && wc < 0x00a0)
 103     c = wc;
 104   else if (wc >= 0x00a0 && wc < 0x00c0)
 105     c = armscii_8_page00_1[wc-0x00a0];
 106   else if (wc >= 0x0530 && wc < 0x0590)
 107     c = armscii_8_page05[wc-0x0530];
 108   else if (wc >= 0x2010 && wc < 0x2028)
 109     c = armscii_8_page20[wc-0x2010];
 110   if (c != 0) {
 111     *r = c;
 112     return 1;
 113   }
 114   return RET_ILUNI;
 115 }