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/* Mapping tables for EUC-KR handling.
Copyright (C) 1998-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <dlfcn.h>
#include <stdint.h>
#include <ksc5601.h>
static inline void
__attribute ((always_inline))
euckr_from_ucs4 (uint32_t ch, unsigned char *cp)
{
if (ch > 0x9f)
{
if (__builtin_expect (ch, 0) == 0x20a9)
{
/* Half-width Korean Currency WON sign. There is no
equivalent in EUC-KR. Some mappings use \x5c because
this is what some old Korean ASCII variants used but this
is causing problems. We map it to the FULL WIDTH WON SIGN. */
cp[0] = '\xa3';
cp[1] = '\xdc';
}
else if (__builtin_expect (ucs4_to_ksc5601 (ch, cp, 2), 0)
!= __UNKNOWN_10646_CHAR)
{
cp[0] |= 0x80;
cp[1] |= 0x80;
}
else
cp[0] = cp[1] = '\0';
}
else
{
/* There is no mapping for U005c but we nevertheless map it to
\x5c. */
cp[0] = (unsigned char) ch;
cp[1] = '\0';
}
}
/* Definitions used in the body of the `gconv' function. */
#define CHARSET_NAME "EUC-KR//"
#define FROM_LOOP from_euc_kr
#define TO_LOOP to_euc_kr
#define DEFINE_INIT 1
#define DEFINE_FINI 1
#define MIN_NEEDED_FROM 1
#define MAX_NEEDED_FROM 2
#define MIN_NEEDED_TO 4
#define ONE_DIRECTION 0
/* First define the conversion function from EUC-KR to UCS4. */
#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
#define MAX_NEEDED_INPUT MAX_NEEDED_FROM
#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
#define LOOPFCT FROM_LOOP
#define BODY \
{ \
uint32_t ch = *inptr; \
\
if (ch <= 0x9f) \
++inptr; \
else if (__glibc_unlikely (ch == 0xa0)) \
{ \
/* This is illegal. */ \
STANDARD_FROM_LOOP_ERR_HANDLER (1); \
} \
else \
{ \
/* Two-byte character. First test whether the next byte \
is also available. */ \
ch = ksc5601_to_ucs4 (&inptr, inend - inptr, 0x80); \
if (__glibc_unlikely (ch == 0)) \
{ \
/* The second byte is not available. */ \
result = __GCONV_INCOMPLETE_INPUT; \
break; \
} \
if (__glibc_unlikely (ch == __UNKNOWN_10646_CHAR)) \
/* This is an illegal character. */ \
STANDARD_FROM_LOOP_ERR_HANDLER (2); \
} \
\
put32 (outptr, ch); \
outptr += 4; \
}
#define LOOP_NEED_FLAGS
#define ONEBYTE_BODY \
{ \
if (c <= 0x9f) \
return c; \
else \
return WEOF; \
}
#include <iconv/loop.c>
/* Next, define the other direction. */
#define MIN_NEEDED_INPUT MIN_NEEDED_TO
#define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM
#define MAX_NEEDED_OUTPUT MAX_NEEDED_FROM
#define LOOPFCT TO_LOOP
#define BODY \
{ \
uint32_t ch = get32 (inptr); \
unsigned char cp[2]; \
\
/* Decomposing Hangul syllables not available in KS C 5601 into \
Jamos should be considered either here or in euckr_from_ucs4() */ \
euckr_from_ucs4 (ch, cp); \
\
if (__builtin_expect (cp[0], '\1') == '\0' && ch != 0) \
{ \
UNICODE_TAG_HANDLER (ch, 4); \
\
/* Illegal character. */ \
STANDARD_TO_LOOP_ERR_HANDLER (4); \
} \
\
*outptr++ = cp[0]; \
/* Now test for a possible second byte and write this if possible. */ \
if (cp[1] != '\0') \
{ \
if (__glibc_unlikely (outptr >= outend)) \
{ \
/* The result does not fit into the buffer. */ \
--outptr; \
result = __GCONV_FULL_OUTPUT; \
break; \
} \
*outptr++ = cp[1]; \
} \
\
inptr += 4; \
}
#define LOOP_NEED_FLAGS
#include <iconv/loop.c>
/* Now define the toplevel functions. */
#include <iconv/skeleton.c>
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