190 lines
6.4 KiB
C
190 lines
6.4 KiB
C
/* Mapping tables for EUC-TW handling.
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Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <stdint.h>
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#include <cns11643l1.h>
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#include <cns11643.h>
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/* Definitions used in the body of the `gconv' function. */
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#define CHARSET_NAME "EUC-TW//"
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#define FROM_LOOP from_euc_tw
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#define TO_LOOP to_euc_tw
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#define DEFINE_INIT 1
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#define DEFINE_FINI 1
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#define MIN_NEEDED_FROM 1
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#define MAX_NEEDED_FROM 4
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#define MIN_NEEDED_TO 4
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/* First define the conversion function from EUC-TW to UCS4. */
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#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
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#define MAX_NEEDED_INPUT MAX_NEEDED_FROM
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#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
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#define LOOPFCT FROM_LOOP
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#define BODY \
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{ \
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uint32_t ch = *inptr; \
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\
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if (ch <= 0x7f) \
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/* Plain ASCII. */ \
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++inptr; \
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else if ((ch <= 0xa0 || ch > 0xfe) && ch != 0x8e) \
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{ \
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/* This is illegal. */ \
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result = __GCONV_ILLEGAL_INPUT; \
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break; \
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} \
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else \
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{ \
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/* Two or more byte character. First test whether the next \
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character is also available. */ \
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uint32_t ch2; \
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\
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if (NEED_LENGTH_TEST && inptr + (ch == 0x8e ? 3 : 1) >= inend) \
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{ \
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/* The second character is not available. Store the \
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intermediate result. */ \
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result = __GCONV_INCOMPLETE_INPUT; \
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break; \
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} \
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\
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ch2 = *inptr; \
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\
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/* All second bytes of a multibyte character must be >= 0xa1. */ \
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if (ch2 < 0xa1 || ch2 == 0xff) \
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{ \
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/* This is an illegal character. */ \
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result = __GCONV_ILLEGAL_INPUT; \
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break; \
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} \
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\
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if (ch == 0x8e) \
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{ \
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/* This is code set 2: CNS 11643, planes 1 to 16. */ \
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const char *endp = inptr + 1; \
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\
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ch = cns11643_to_ucs4 (&endp, \
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NEED_LENGTH_TEST ? inend - inptr - 1 : 3, \
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0x80); \
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/* Please note that we need not test for the missing input \
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characters here anymore. */ \
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if (ch == __UNKNOWN_10646_CHAR) \
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{ \
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/* Illegal input. */ \
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result = __GCONV_ILLEGAL_INPUT; \
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break; \
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} \
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\
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inptr += 4; \
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} \
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else \
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{ \
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/* This is code set 1: CNS 11643, plane 1. */ \
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const unsigned char *endp = inptr; \
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\
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ch = cns11643l1_to_ucs4 (&endp, \
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NEED_LENGTH_TEST ? inend - inptr : 2, \
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0x80); \
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/* Please note that we need not test for the missing input \
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characters here anymore. */ \
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if (ch == __UNKNOWN_10646_CHAR) \
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{ \
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/* Illegal input. */ \
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result = __GCONV_ILLEGAL_INPUT; \
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break; \
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} \
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\
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inptr += 2; \
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} \
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} \
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\
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put32 (outptr, ch); \
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outptr += 4; \
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}
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#include <iconv/loop.c>
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/* Next, define the other direction. */
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#define MIN_NEEDED_INPUT MIN_NEEDED_TO
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#define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM
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#define MAX_NEEDED_OUTPUT MAX_NEEDED_FROM
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#define LOOPFCT TO_LOOP
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#define BODY \
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{ \
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uint32_t ch = get32 (inptr); \
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\
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if (ch <= 0x7f) \
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/* It's plain ASCII. */ \
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*outptr++ = ch; \
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else \
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{ \
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/* Try the JIS character sets. */ \
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size_t found; \
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\
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found = ucs4_to_cns11643l1 (ch, outptr, \
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NEED_LENGTH_TEST ? outend - outptr : 2); \
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if (NEED_LENGTH_TEST && found == 0) \
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{ \
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/* We ran out of space. */ \
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result = __GCONV_INCOMPLETE_INPUT; \
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break; \
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} \
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if (found != __UNKNOWN_10646_CHAR) \
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{ \
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/* It's a CNS 11643, plane 1 character, adjust it for EUC-TW. */ \
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*outptr++ += 0x80; \
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*outptr++ += 0x80; \
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} \
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else \
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{ \
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/* No CNS 11643, plane 1 character. */ \
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\
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found = ucs4_to_cns11643 (ch, outptr + 1, \
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(NEED_LENGTH_TEST \
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? outend - outptr - 1 : 3)); \
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if (NEED_LENGTH_TEST && found == 0) \
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{ \
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/* We ran out of space. */ \
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result = __GCONV_INCOMPLETE_INPUT; \
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break; \
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} \
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if (found == __UNKNOWN_10646_CHAR) \
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{ \
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/* No legal input. */ \
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result = __GCONV_ILLEGAL_INPUT; \
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break; \
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} \
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\
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/* It's a CNS 11643 character, adjust it for EUC-TW. */ \
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*outptr++ = '\x8e'; \
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*outptr++ += 0xa0; \
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*outptr++ += 0x80; \
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*outptr++ += 0x80; \
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} \
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} \
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\
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inptr += 4; \
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}
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#include <iconv/loop.c>
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/* Now define the toplevel functions. */
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#include <iconv/skeleton.c>
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