iconvdata/armscii-8.c

   1 /* Conversion to and from ARMSCII-8
   2    Copyright (C) 1997-2024 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    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 C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <dlfcn.h>
  20 #include <stdint.h>
  21
  22 /* Definitions used in the body of the `gconv' function.  */
  23 #define CHARSET_NAME            "ARMSCII-8//"
  24 #define FROM_LOOP               from_armscii_8
  25 #define TO_LOOP                 to_armscii_8
  26 #define DEFINE_INIT             1
  27 #define DEFINE_FINI             1
  28 #define MIN_NEEDED_FROM         1
  29 #define MIN_NEEDED_TO           4
  30 #define ONE_DIRECTION           0
  31
  32
  33 static const uint16_t map_from_armscii_8[0xfe - 0xa2 + 1] =
  34   {
  35     0x0587, 0x0589, 0x0029, 0x0028, 0x00bb, 0x00ab, 0x2014, 0x002e,
  36     0x055d, 0x002c, 0x002d, 0x058a, 0x2026, 0x055c, 0x055b, 0x055e,
  37     0x0531, 0x0561, 0x0532, 0x0562, 0x0533, 0x0563, 0x0534, 0x0564,
  38     0x0535, 0x0565, 0x0536, 0x0566, 0x0537, 0x0567, 0x0538, 0x0568,
  39     0x0539, 0x0569, 0x053a, 0x056a, 0x053b, 0x056b, 0x053c, 0x056c,
  40     0x053d, 0x056d, 0x053e, 0x056e, 0x053f, 0x056f, 0x0540, 0x0570,
  41     0x0541, 0x0571, 0x0542, 0x0572, 0x0543, 0x0573, 0x0544, 0x0574,
  42     0x0545, 0x0575, 0x0546, 0x0576, 0x0547, 0x0577, 0x0548, 0x0578,
  43     0x0549, 0x0579, 0x054a, 0x057a, 0x054b, 0x057b, 0x054c, 0x057c,
  44     0x054d, 0x057d, 0x054e, 0x057e, 0x054f, 0x057f, 0x0550, 0x0580,
  45     0x0551, 0x0581, 0x0552, 0x0582, 0x0553, 0x0583, 0x0554, 0x0584,
  46     0x0555, 0x0585, 0x0556, 0x0586, 0x055a
  47   };
  48
  49
  50 /* First define the conversion function from ARMSCII-8 to UCS4.  */
  51 #define MIN_NEEDED_INPUT        MIN_NEEDED_FROM
  52 #define MIN_NEEDED_OUTPUT       MIN_NEEDED_TO
  53 #define LOOPFCT                 FROM_LOOP
  54 #define BODY \
  55   {                                                                           \
  56     uint_fast8_t ch = *inptr;                                                 \
  57                                                                               \
  58     if (ch <= 0xa0)                                                           \
  59       {                                                                       \
  60         /* Upto and including 0xa0 the ARMSCII-8 corresponds to Unicode.  */  \
  61         *((uint32_t *) outptr) = ch;                                          \
  62         outptr += sizeof (uint32_t);                                          \
  63       }                                                                       \
  64     else if (ch >= 0xa2 && ch <= 0xfe)                                        \
  65       {                                                                       \
  66         /* Use the table.  */                                                 \
  67         *((uint32_t *) outptr) = map_from_armscii_8[ch - 0xa2];               \
  68         outptr += sizeof (uint32_t);                                          \
  69       }                                                                       \
  70     else                                                                      \
  71       {                                                                       \
  72         /* This is an illegal character.  */                                  \
  73         STANDARD_FROM_LOOP_ERR_HANDLER (1);                                   \
  74       }                                                                       \
  75                                                                               \
  76     ++inptr;                                                                  \
  77   }
  78 #define LOOP_NEED_FLAGS
  79 #define ONEBYTE_BODY \
  80   {                                                                           \
  81     if (c <= 0xa0)                                                            \
  82       /* Upto and including 0xa0 the ARMSCII-8 corresponds to Unicode.  */    \
  83       return c;                                                               \
  84     else if (c >= 0xa2 && c <= 0xfe)                                          \
  85       /* Use the table.  */                                                   \
  86       return map_from_armscii_8[c - 0xa2];                                    \
  87     else                                                                      \
  88       return WEOF;                                                            \
  89   }
  90 #include <iconv/loop.c>
  91
  92
  93 static const unsigned char map_to_armscii_8[0x58a - 0x531 + 1] =
  94   {
  95     0xb2, 0xb4, 0xb6, 0xb8, 0xba, 0xbc, 0xbe, 0xc0,
  96     0xc2, 0xc4, 0xc6, 0xc8, 0xca, 0xcc, 0xce, 0xd0,
  97     0xd2, 0xd4, 0xd6, 0xd8, 0xda, 0xdc, 0xde, 0xe0,
  98     0xe2, 0xe4, 0xe6, 0xe8, 0xea, 0xec, 0xee, 0xf0,
  99     0xf2, 0xf4, 0xf6, 0xf8, 0xfa, 0xfc, 0x00, 0x00,
 100     0x00, 0xfe, 0xb0, 0xaf, 0xaa, 0xb1, 0x00, 0x00,
 101     0xb3, 0xb5, 0xb7, 0xb9, 0xbb, 0xbd, 0xbf, 0xc1,
 102     0xc3, 0xc5, 0xc7, 0xc9, 0xcb, 0xcd, 0xcf, 0xd1,
 103     0xd3, 0xd5, 0xd7, 0xd9, 0xdb, 0xdd, 0xdf, 0xe1,
 104     0xe3, 0xe5, 0xe7, 0xe9, 0xeb, 0xed, 0xef, 0xf1,
 105     0xf3, 0xf5, 0xf7, 0xf9, 0xfb, 0xfd, 0xa2, 0x00,
 106     0xa3, 0xad
 107   };
 108
 109
 110 /* Next, define the other direction.  */
 111 #define MIN_NEEDED_INPUT        MIN_NEEDED_TO
 112 #define MIN_NEEDED_OUTPUT       MIN_NEEDED_FROM
 113 #define LOOPFCT                 TO_LOOP
 114 #define BODY \
 115   {                                                                           \
 116     uint32_t ch = *((const uint32_t *) inptr);                                \
 117                                                                               \
 118     if (ch <= 0xa0)                                                           \
 119       /* Upto and including 0xa0 the ARMSCII-8 corresponds to Unicode.  */    \
 120       *outptr = (unsigned char) ch;                                           \
 121     else if (ch == 0xab)                                                      \
 122       *outptr = 0xa7;                                                         \
 123     else if (ch == 0xbb)                                                      \
 124       *outptr = 0xa6;                                                         \
 125     else if (ch >= 0x531 && ch <= 0x58a)                                      \
 126       {                                                                       \
 127         unsigned char oc = map_to_armscii_8[ch - 0x531];                      \
 128                                                                               \
 129         if (oc == 0)                                                          \
 130           /* No valid mapping.  */                                            \
 131           goto err;                                                           \
 132                                                                               \
 133         *outptr = oc;                                                         \
 134       }                                                                       \
 135     else if (ch == 0x2014)                                                    \
 136       *outptr = 0xa8;                                                         \
 137     else if (ch == 0x2026)                                                    \
 138       *outptr = 0xae;                                                         \
 139     else                                                                      \
 140       {                                                                       \
 141         UNICODE_TAG_HANDLER (ch, 4);                                          \
 142                                                                               \
 143         /* We have an illegal character.  */                                  \
 144       err:                                                                    \
 145         STANDARD_TO_LOOP_ERR_HANDLER (4);                                     \
 146       }                                                                       \
 147     ++outptr;                                                                 \
 148     inptr += 4;                                                               \
 149   }
 150 #define LOOP_NEED_FLAGS
 151 #include <iconv/loop.c>
 152
 153
 154 /* Now define the toplevel functions.  */
 155 #include <iconv/skeleton.c>