iconvdata/armscii-8.c

   1 /* Conversion to and from ARMSCII-8
   2    Copyright (C) 1997-2017 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include <dlfcn.h>
  21 #include <stdint.h>
  22
  23 /* Definitions used in the body of the `gconv' function.  */
  24 #define CHARSET_NAME            "ARMSCII-8//"
  25 #define FROM_LOOP               from_armscii_8
  26 #define TO_LOOP                 to_armscii_8
  27 #define DEFINE_INIT             1
  28 #define DEFINE_FINI             1
  29 #define MIN_NEEDED_FROM         1
  30 #define MIN_NEEDED_TO           4
  31 #define ONE_DIRECTION           0
  32
  33
  34 static const uint16_t map_from_armscii_8[0xfe - 0xa2 + 1] =
  35   {
  36     0x0587, 0x0589, 0x0029, 0x0028, 0x00bb, 0x00ab, 0x2014, 0x002e,
  37     0x055d, 0x002c, 0x002d, 0x058a, 0x2026, 0x055c, 0x055b, 0x055e,
  38     0x0531, 0x0561, 0x0532, 0x0562, 0x0533, 0x0563, 0x0534, 0x0564,
  39     0x0535, 0x0565, 0x0536, 0x0566, 0x0537, 0x0567, 0x0538, 0x0568,
  40     0x0539, 0x0569, 0x053a, 0x056a, 0x053b, 0x056b, 0x053c, 0x056c,
  41     0x053d, 0x056d, 0x053e, 0x056e, 0x053f, 0x056f, 0x0540, 0x0570,
  42     0x0541, 0x0571, 0x0542, 0x0572, 0x0543, 0x0573, 0x0544, 0x0574,
  43     0x0545, 0x0575, 0x0546, 0x0576, 0x0547, 0x0577, 0x0548, 0x0578,
  44     0x0549, 0x0579, 0x054a, 0x057a, 0x054b, 0x057b, 0x054c, 0x057c,
  45     0x054d, 0x057d, 0x054e, 0x057e, 0x054f, 0x057f, 0x0550, 0x0580,
  46     0x0551, 0x0581, 0x0552, 0x0582, 0x0553, 0x0583, 0x0554, 0x0584,
  47     0x0555, 0x0585, 0x0556, 0x0586, 0x055a
  48   };
  49
  50
  51 /* First define the conversion function from ARMSCII-8 to UCS4.  */
  52 #define MIN_NEEDED_INPUT        MIN_NEEDED_FROM
  53 #define MIN_NEEDED_OUTPUT       MIN_NEEDED_TO
  54 #define LOOPFCT                 FROM_LOOP
  55 #define BODY \
  56   {                                                                           \
  57     uint_fast8_t ch = *inptr;                                                 \
  58                                                                               \
  59     if (ch <= 0xa0)                                                           \
  60       {                                                                       \
  61         /* Upto and including 0xa0 the ARMSCII-8 corresponds to Unicode.  */  \
  62         *((uint32_t *) outptr) = ch;                                          \
  63         outptr += sizeof (uint32_t);                                          \
  64       }                                                                       \
  65     else if (ch >= 0xa2 && ch <= 0xfe)                                        \
  66       {                                                                       \
  67         /* Use the table.  */                                                 \
  68         *((uint32_t *) outptr) = map_from_armscii_8[ch - 0xa2];               \
  69         outptr += sizeof (uint32_t);                                          \
  70       }                                                                       \
  71     else                                                                      \
  72       {                                                                       \
  73         /* This is an illegal character.  */                                  \
  74         STANDARD_FROM_LOOP_ERR_HANDLER (1);                                   \
  75       }                                                                       \
  76                                                                               \
  77     ++inptr;                                                                  \
  78   }
  79 #define LOOP_NEED_FLAGS
  80 #define ONEBYTE_BODY \
  81   {                                                                           \
  82     if (c <= 0xa0)                                                            \
  83       /* Upto and including 0xa0 the ARMSCII-8 corresponds to Unicode.  */    \
  84       return c;                                                               \
  85     else if (c >= 0xa2 && c <= 0xfe)                                          \
  86       /* Use the table.  */                                                   \
  87       return map_from_armscii_8[c - 0xa2];                                    \
  88     else                                                                      \
  89       return WEOF;                                                            \
  90   }
  91 #include <iconv/loop.c>
  92
  93
  94 static const unsigned char map_to_armscii_8[0x58a - 0x531 + 1] =
  95   {
  96     0xb2, 0xb4, 0xb6, 0xb8, 0xba, 0xbc, 0xbe, 0xc0,
  97     0xc2, 0xc4, 0xc6, 0xc8, 0xca, 0xcc, 0xce, 0xd0,
  98     0xd2, 0xd4, 0xd6, 0xd8, 0xda, 0xdc, 0xde, 0xe0,
  99     0xe2, 0xe4, 0xe6, 0xe8, 0xea, 0xec, 0xee, 0xf0,
 100     0xf2, 0xf4, 0xf6, 0xf8, 0xfa, 0xfc, 0x00, 0x00,
 101     0x00, 0xfe, 0xb0, 0xaf, 0xaa, 0xb1, 0x00, 0x00,
 102     0xb3, 0xb5, 0xb7, 0xb9, 0xbb, 0xbd, 0xbf, 0xc1,
 103     0xc3, 0xc5, 0xc7, 0xc9, 0xcb, 0xcd, 0xcf, 0xd1,
 104     0xd3, 0xd5, 0xd7, 0xd9, 0xdb, 0xdd, 0xdf, 0xe1,
 105     0xe3, 0xe5, 0xe7, 0xe9, 0xeb, 0xed, 0xef, 0xf1,
 106     0xf3, 0xf5, 0xf7, 0xf9, 0xfb, 0xfd, 0xa2, 0x00,
 107     0xa3, 0xad
 108   };
 109
 110
 111 /* Next, define the other direction.  */
 112 #define MIN_NEEDED_INPUT        MIN_NEEDED_TO
 113 #define MIN_NEEDED_OUTPUT       MIN_NEEDED_FROM
 114 #define LOOPFCT                 TO_LOOP
 115 #define BODY \
 116   {                                                                           \
 117     uint32_t ch = *((const uint32_t *) inptr);                                \
 118                                                                               \
 119     if (ch <= 0xa0)                                                           \
 120       /* Upto and including 0xa0 the ARMSCII-8 corresponds to Unicode.  */    \
 121       *outptr = (unsigned char) ch;                                           \
 122     else if (ch == 0xab)                                                      \
 123       *outptr = 0xa7;                                                         \
 124     else if (ch == 0xbb)                                                      \
 125       *outptr = 0xa6;                                                         \
 126     else if (ch >= 0x531 && ch <= 0x58a)                                      \
 127       {                                                                       \
 128         unsigned char oc = map_to_armscii_8[ch - 0x531];                      \
 129                                                                               \
 130         if (oc == 0)                                                          \
 131           /* No valid mapping.  */                                            \
 132           goto err;                                                           \
 133                                                                               \
 134         *outptr = oc;                                                         \
 135       }                                                                       \
 136     else if (ch == 0x2014)                                                    \
 137       *outptr = 0xa8;                                                         \
 138     else if (ch == 0x2026)                                                    \
 139       *outptr = 0xae;                                                         \
 140     else                                                                      \
 141       {                                                                       \
 142         UNICODE_TAG_HANDLER (ch, 4);                                          \
 143                                                                               \
 144         /* We have an illegal character.  */                                  \
 145       err:                                                                    \
 146         STANDARD_TO_LOOP_ERR_HANDLER (4);                                     \
 147       }                                                                       \
 148     ++outptr;                                                                 \
 149     inptr += 4;                                                               \
 150   }
 151 #define LOOP_NEED_FLAGS
 152 #include <iconv/loop.c>
 153
 154
 155 /* Now define the toplevel functions.  */
 156 #include <iconv/skeleton.c>