iconvdata/euc-kr.c

   1 /* Mapping tables for EUC-KR handling.
   2    Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Jungshik Shin <jshin@pantheon.yale.edu>
   5    and Ulrich Drepper <drepper@cygnus.com>, 1998.
   6
   7    The GNU C Library is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU Library General Public License as
   9    published by the Free Software Foundation; either version 2 of the
  10    License, or (at your option) any later version.
  11
  12    The GNU C Library is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    Library General Public License for more details.
  16
  17    You should have received a copy of the GNU Library General Public
  18    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  19    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 #include <stdint.h>
  23 #include <ksc5601.h>
  24
  25
  26 static inline void
  27 euckr_from_ucs4 (uint32_t ch, unsigned char *cp)
  28 {
  29   if (ch > 0x7f)
  30     {
  31       if (ucs4_to_ksc5601 (ch, cp, 2) != __UNKNOWN_10646_CHAR)
  32         {
  33           cp[0] |= 0x80;
  34           cp[1] |= 0x80;
  35         }
  36       else
  37         cp[0] = '\0';
  38     }
  39   /* XXX Think about 0x5c ; '\'.  */
  40   else
  41     {
  42       cp[0] = (unsigned char) ch;
  43       cp[1] = '\0';
  44     }
  45 }
  46
  47
  48 /* Definitions used in the body of the `gconv' function.  */
  49 #define CHARSET_NAME            "EUC-KR//"
  50 #define FROM_LOOP               from_euc_kr
  51 #define TO_LOOP                 to_euc_kr
  52 #define DEFINE_INIT             1
  53 #define DEFINE_FINI             1
  54 #define MIN_NEEDED_FROM         1
  55 #define MAX_NEEDED_FROM         2
  56 #define MIN_NEEDED_TO           4
  57
  58
  59 /* First define the conversion function from EUC-KR to UCS4.  */
  60 #define MIN_NEEDED_INPUT        MIN_NEEDED_FROM
  61 #define MAX_NEEDED_INPUT        MAX_NEEDED_FROM
  62 #define MIN_NEEDED_OUTPUT       MIN_NEEDED_TO
  63 #define LOOPFCT                 FROM_LOOP
  64 #define BODY \
  65   {                                                                           \
  66     uint32_t ch = *inptr;                                                     \
  67                                                                               \
  68     /* Half-width Korean Currency WON sign                                    \
  69                                                                               \
  70        if (inchar == 0x5c)                                                    \
  71          ch =  0x20a9;                                                        \
  72        else if (inchar <= 0x7f)                                               \
  73          ch = (uint32_t) inchar;                                              \
  74     */                                                                        \
  75                                                                               \
  76     if (ch <= 0x7f)                                                           \
  77       /* Plain ASCII.  */                                                     \
  78       ++inptr;                                                                \
  79     /* 0xfe(->0x7e : row 94) and 0xc9(->0x59 : row 41) are                    \
  80        user-defined areas.  */                                                \
  81     else if (ch <= 0xa0 || ch > 0xfe || ch == 0xc9)                           \
  82       {                                                                       \
  83         /* This is illegal.  */                                               \
  84         result = __GCONV_ILLEGAL_INPUT;                                       \
  85         break;                                                                \
  86       }                                                                       \
  87     else                                                                      \
  88       {                                                                       \
  89         /* Two-byte character.  First test whether the next character         \
  90            is also available.  */                                             \
  91         ch = ksc5601_to_ucs4 (&inptr,                                         \
  92                               NEED_LENGTH_TEST ? inptr - inend : 2, 0x80);    \
  93         if (NEED_LENGTH_TEST && ch == 0)                                      \
  94           {                                                                   \
  95             /* The second character is not available.  */                     \
  96             result = __GCONV_INCOMPLETE_INPUT;                                \
  97             break;                                                            \
  98           }                                                                   \
  99         if (ch == __UNKNOWN_10646_CHAR)                                       \
 100           {                                                                   \
 101             /* This is an illegal character.  */                              \
 102             result = __GCONV_ILLEGAL_INPUT;                                   \
 103             break;                                                            \
 104           }                                                                   \
 105       }                                                                       \
 106                                                                               \
 107     put32 (outptr, ch);                                                       \
 108     outptr += 4;                                                              \
 109   }
 110 #include <iconv/loop.c>
 111
 112
 113 /* Next, define the other direction.  */
 114 #define MIN_NEEDED_INPUT        MIN_NEEDED_TO
 115 #define MIN_NEEDED_OUTPUT       MIN_NEEDED_FROM
 116 #define MAX_NEEDED_OUTPUT       MAX_NEEDED_FROM
 117 #define LOOPFCT                 TO_LOOP
 118 #define BODY \
 119   {                                                                           \
 120     uint32_t ch = get32 (inptr);                                              \
 121     unsigned char cp[2];                                                      \
 122                                                                               \
 123     /* Decomposing Hangul syllables not available in KS C 5601 into           \
 124        Jamos should be considered either here or in euckr_from_ucs4() */      \
 125     euckr_from_ucs4 (ch, cp) ;                                                \
 126                                                                               \
 127     if (cp[0] == '\0' && ch != 0)                                             \
 128       {                                                                       \
 129         /* Illegal character.  */                                             \
 130         result = __GCONV_ILLEGAL_INPUT;                                       \
 131         break;                                                                \
 132       }                                                                       \
 133                                                                               \
 134     *outptr++ = cp[0];                                                        \
 135     /* Now test for a possible second byte and write this if possible.  */    \
 136     if (cp[1] != '\0')                                                        \
 137       {                                                                       \
 138         if (NEED_LENGTH_TEST && outptr >= outend)                             \
 139           {                                                                   \
 140             /* The result does not fit into the buffer.  */                   \
 141             --outptr;                                                         \
 142             result = __GCONV_FULL_OUTPUT;                                     \
 143             break;                                                            \
 144           }                                                                   \
 145         *outptr++ = cp[1];                                                    \
 146       }                                                                       \
 147                                                                               \
 148     inptr += 4;                                                               \
 149   }
 150 #include <iconv/loop.c>
 151
 152
 153 /* Now define the toplevel functions.  */
 154 #include <iconv/skeleton.c>