iconvdata/euc-kr.c

   1 /* Mapping tables for EUC-KR handling.
   2    Copyright (C) 1998, 1999, 2000-2002, 2003, 2007
   3    Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5    Contributed by Jungshik Shin <jshin@pantheon.yale.edu>
   6    and Ulrich Drepper <drepper@cygnus.com>, 1998.
   7
   8    The GNU C Library is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU Lesser General Public
  10    License as published by the Free Software Foundation; either
  11    version 2.1 of the License, or (at your option) any later version.
  12
  13    The GNU C Library is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16    Lesser General Public License for more details.
  17
  18    You should have received a copy of the GNU Lesser General Public
  19    License along with the GNU C Library; if not, write to the Free
  20    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  21    02111-1307 USA.  */
  22
  23 #include <dlfcn.h>
  24 #include <stdint.h>
  25 #include <ksc5601.h>
  26
  27
  28 static inline void
  29 __attribute ((always_inline))
  30 euckr_from_ucs4 (uint32_t ch, unsigned char *cp)
  31 {
  32   if (ch > 0x9f)
  33     {
  34       if (__builtin_expect (ch, 0) == 0x20a9)
  35         {
  36           /* Half-width Korean Currency WON sign.  There is no
  37              equivalent in EUC-KR.  Some mappings use \x5c because
  38              this is what some old Korean ASCII variants used but this
  39              is causing problems.  We map it to the FULL WIDTH WON SIGN.  */
  40           cp[0] = '\xa3';
  41           cp[1] = '\xdc';
  42         }
  43       else if (__builtin_expect (ucs4_to_ksc5601 (ch, cp, 2), 0)
  44           != __UNKNOWN_10646_CHAR)
  45         {
  46           cp[0] |= 0x80;
  47           cp[1] |= 0x80;
  48         }
  49       else
  50         cp[0] = cp[1] = '\0';
  51     }
  52   else
  53     {
  54       /* There is no mapping for U005c but we nevertheless map it to
  55          \x5c.  */
  56       cp[0] = (unsigned char) ch;
  57       cp[1] = '\0';
  58     }
  59 }
  60
  61
  62 /* Definitions used in the body of the `gconv' function.  */
  63 #define CHARSET_NAME            "EUC-KR//"
  64 #define FROM_LOOP               from_euc_kr
  65 #define TO_LOOP                 to_euc_kr
  66 #define DEFINE_INIT             1
  67 #define DEFINE_FINI             1
  68 #define MIN_NEEDED_FROM         1
  69 #define MAX_NEEDED_FROM         2
  70 #define MIN_NEEDED_TO           4
  71
  72
  73 /* First define the conversion function from EUC-KR to UCS4.  */
  74 #define MIN_NEEDED_INPUT        MIN_NEEDED_FROM
  75 #define MAX_NEEDED_INPUT        MAX_NEEDED_FROM
  76 #define MIN_NEEDED_OUTPUT       MIN_NEEDED_TO
  77 #define LOOPFCT                 FROM_LOOP
  78 #define BODY \
  79   {                                                                           \
  80     uint32_t ch = *inptr;                                                     \
  81                                                                               \
  82     if (ch <= 0x9f)                                                           \
  83       ++inptr;                                                                \
  84     /* 0xfe(->0x7e : row 94) and 0xc9(->0x59 : row 41) are                    \
  85        user-defined areas.  */                                                \
  86     else if (__builtin_expect (ch == 0xa0, 0)                                 \
  87              || __builtin_expect (ch > 0xfe, 0)                               \
  88              || __builtin_expect (ch == 0xc9, 0))                             \
  89       {                                                                       \
  90         /* This is illegal.  */                                               \
  91         STANDARD_FROM_LOOP_ERR_HANDLER (1);                                   \
  92       }                                                                       \
  93     else                                                                      \
  94       {                                                                       \
  95         /* Two-byte character.  First test whether the next byte              \
  96            is also available.  */                                             \
  97         ch = ksc5601_to_ucs4 (&inptr, inend - inptr, 0x80);                   \
  98         if (__builtin_expect (ch == 0, 0))                                    \
  99           {                                                                   \
 100             /* The second byte is not available.  */                          \
 101             result = __GCONV_INCOMPLETE_INPUT;                                \
 102             break;                                                            \
 103           }                                                                   \
 104         if (__builtin_expect (ch == __UNKNOWN_10646_CHAR, 0))                 \
 105           /* This is an illegal character.  */                                \
 106           STANDARD_FROM_LOOP_ERR_HANDLER (2);                                 \
 107       }                                                                       \
 108                                                                               \
 109     put32 (outptr, ch);                                                       \
 110     outptr += 4;                                                              \
 111   }
 112 #define LOOP_NEED_FLAGS
 113 #define ONEBYTE_BODY \
 114   {                                                                           \
 115     if (c <= 0x9f)                                                            \
 116       return c;                                                               \
 117     else                                                                      \
 118       return WEOF;                                                            \
 119   }
 120 #include <iconv/loop.c>
 121
 122
 123 /* Next, define the other direction.  */
 124 #define MIN_NEEDED_INPUT        MIN_NEEDED_TO
 125 #define MIN_NEEDED_OUTPUT       MIN_NEEDED_FROM
 126 #define MAX_NEEDED_OUTPUT       MAX_NEEDED_FROM
 127 #define LOOPFCT                 TO_LOOP
 128 #define BODY \
 129   {                                                                           \
 130     uint32_t ch = get32 (inptr);                                              \
 131     unsigned char cp[2];                                                      \
 132                                                                               \
 133     /* Decomposing Hangul syllables not available in KS C 5601 into           \
 134        Jamos should be considered either here or in euckr_from_ucs4() */      \
 135     euckr_from_ucs4 (ch, cp);                                                 \
 136                                                                               \
 137     if (__builtin_expect (cp[0], '\1') == '\0' && ch != 0)                    \
 138       {                                                                       \
 139         UNICODE_TAG_HANDLER (ch, 4);                                          \
 140                                                                               \
 141         /* Illegal character.  */                                             \
 142         STANDARD_TO_LOOP_ERR_HANDLER (4);                                     \
 143       }                                                                       \
 144                                                                               \
 145     *outptr++ = cp[0];                                                        \
 146     /* Now test for a possible second byte and write this if possible.  */    \
 147     if (cp[1] != '\0')                                                        \
 148       {                                                                       \
 149         if (__builtin_expect (outptr >= outend, 0))                           \
 150           {                                                                   \
 151             /* The result does not fit into the buffer.  */                   \
 152             --outptr;                                                         \
 153             result = __GCONV_FULL_OUTPUT;                                     \
 154             break;                                                            \
 155           }                                                                   \
 156         *outptr++ = cp[1];                                                    \
 157       }                                                                       \
 158                                                                               \
 159     inptr += 4;                                                               \
 160   }
 161 #define LOOP_NEED_FLAGS
 162 #include <iconv/loop.c>
 163
 164
 165 /* Now define the toplevel functions.  */
 166 #include <iconv/skeleton.c>