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/* Mapping tables for EUC-TW handling.
Copyright (C) 1998 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <stdint.h>
#include <cns11643l1.h>
#include <cns11643.h>
/* Definitions used in the body of the `gconv' function. */
#define CHARSET_NAME "EUC-TW"
#define FROM_LOOP from_euc_tw
#define TO_LOOP to_euc_tw
#define DEFINE_INIT 1
#define DEFINE_FINI 1
#define MIN_NEEDED_FROM 1
#define MAX_NEEDED_FROM 4
#define MIN_NEEDED_TO 4
/* First define the conversion function from EUC-TW 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 <= 0x7f) \
/* Plain ASCII. */ \
++inptr; \
else if ((ch <= 0xa0 || ch > 0xfe) && ch != 0x8e) \
{ \
/* This is illegal. */ \
result = GCONV_ILLEGAL_INPUT; \
break; \
} \
else \
{ \
/* Two or more byte character. First test whether the next \
character is also available. */ \
uint32_t ch2; \
\
if (NEED_LENGTH_TEST && inptr + (ch == 0x8e ? 3 : 1) >= inend) \
{ \
/* The second character is not available. Store the \
intermediate result. */ \
result = GCONV_INCOMPLETE_INPUT; \
break; \
} \
\
ch2 = *inptr; \
\
/* All second bytes of a multibyte character must be >= 0xa1. */ \
if (ch2 < 0xa1 || ch2 == 0xff) \
{ \
/* This is an illegal character. */ \
result = GCONV_ILLEGAL_INPUT; \
break; \
} \
\
if (ch == 0x8e) \
{ \
/* This is code set 2: CNS 11643, planes 1 to 16. */ \
const char *endp = inptr + 1; \
\
ch = cns11643_to_ucs4 (&endp, \
NEED_LENGTH_TEST ? inend - inptr - 1 : 3, \
0x80); \
/* Please note that we need not test for the missing input \
characters here anymore. */ \
if (ch == UNKNOWN_10646_CHAR) \
{ \
/* Illegal input. */ \
result = GCONV_ILLEGAL_INPUT; \
break; \
} \
\
inptr += 4; \
} \
else \
{ \
/* This is code set 1: CNS 11643, plane 1. */ \
const char *endp = inptr; \
\
ch = cns11643l1_to_ucs4 (&endp, \
NEED_LENGTH_TEST ? inend - inptr : 2, \
0x80); \
/* Please note that we need not test for the missing input \
characters here anymore. */ \
if (ch == UNKNOWN_10646_CHAR) \
{ \
/* Illegal input. */ \
result = GCONV_ILLEGAL_INPUT; \
break; \
} \
\
inptr += 2; \
} \
} \
\
*((uint32_t *) outptr)++ = ch; \
}
#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 = *((uint32_t *) inptr); \
\
if (ch <= 0x7f) \
/* It's plain ASCII. */ \
*outptr++ = ch; \
else \
{ \
/* Try the JIS character sets. */ \
size_t found; \
\
found = ucs4_to_cns11643l1 (ch, outptr, \
NEED_LENGTH_TEST ? outend - outptr : 2); \
if (NEED_LENGTH_TEST && found == 0) \
{ \
/* We ran out of space. */ \
result = GCONV_INCOMPLETE_INPUT; \
break; \
} \
if (found != UNKNOWN_10646_CHAR) \
{ \
/* It's a CNS 11643, plane 1 character, adjust it for EUC-TW. */ \
*outptr++ += 0x80; \
*outptr++ += 0x80; \
} \
else \
{ \
/* No CNS 11643, plane 1 character. */ \
\
found = ucs4_to_cns11643 (ch, outptr + 1, \
(NEED_LENGTH_TEST \
? outend - outptr - 1 : 3)); \
if (NEED_LENGTH_TEST && found == 0) \
{ \
/* We ran out of space. */ \
result = GCONV_INCOMPLETE_INPUT; \
break; \
} \
if (found == UNKNOWN_10646_CHAR) \
{ \
/* No legal input. */ \
result = GCONV_ILLEGAL_INPUT; \
break; \
} \
\
/* It's a CNS 11643 character, adjust it for EUC-TW. */ \
*outptr++ = '\x8e'; \
*outptr++ += 0xa0; \
*outptr++ += 0x80; \
*outptr++ += 0x80; \
} \
} \
\
inptr += 4; \
}
#include <iconv/loop.c>
/* Now define the toplevel functions. */
#include <iconv/skeleton.c>
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