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Diffstat (limited to 'iconvdata/euc-tw.c')
| -rw-r--r-- | iconvdata/euc-tw.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/iconvdata/euc-tw.c b/iconvdata/euc-tw.c new file mode 100644 index 0000000..ca1cdac --- /dev/null +++ b/iconvdata/euc-tw.c @@ -0,0 +1,188 @@ +/* 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> |