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Diffstat (limited to 'iconvdata/ibm943.c')
| -rw-r--r-- | iconvdata/ibm943.c | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/iconvdata/ibm943.c b/iconvdata/ibm943.c new file mode 100644 index 0000000..5ff27f5 --- /dev/null +++ b/iconvdata/ibm943.c @@ -0,0 +1,234 @@ +/* Conversion from and to IBM943. + Copyright (C) 2000 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Masahide Washizawa <washi@jp.ibm.com>, 2000. + + 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 "ibm943.h" + +#ifndef TRUE +#define TRUE 1 +#define FALSE 0 +#endif + +#define FROM 0 +#define TO 1 + +/* Definitions used in the body of the `gconv' function. */ +#define CHARSET_NAME "IBM943//" +#define FROM_LOOP from_ibm943 +#define TO_LOOP to_ibm943 + +/* Definitions of initialization and destructor function. */ +#define DEFINE_INIT 1 +#define DEFINE_FINI 1 + +#define MIN_NEEDED_FROM 1 +#define MAX_NEEDED_FROM 2 +#define MIN_NEEDED_TO 4 + +/* First, define the conversion function from IBM-943 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 \ + { \ + const struct gap *rp1 = __ibm943sb_to_ucs4_idx; \ + const struct gap *rp2 = __ibm943db_to_ucs4_idx; \ + uint32_t ch = *inptr; \ + uint32_t res; \ + \ + if (__builtin_expect (ch, 0) >= 0xffff) \ + { \ + rp1 = NULL; \ + rp2 = NULL; \ + } \ + else if (__builtin_expect (ch, 0) == 0x80 \ + || __builtin_expect (ch, 0) == 0xa0 \ + || __builtin_expect (ch, 0) == 0xfd \ + || __builtin_expect (ch, 0) == 0xfe \ + || __builtin_expect (ch, 0) == 0xff) \ + { \ + /* This is an illegal character. */ \ + if (! ignore_errors_p ()) \ + { \ + result = __GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + } \ + else \ + { \ + while (ch > rp1->end) \ + ++rp1; \ + } \ + \ + /* Use the IBM943 table for single byte. */ \ + if (__builtin_expect (rp1 == NULL, 0) \ + || __builtin_expect (ch < rp1->start, 0) \ + || (res = __ibm943sb_to_ucs4[ch + rp1->idx], \ + __builtin_expect (res, '\1') == 0 && ch != 0)) \ + { \ + \ + /* Use the IBM943 table for double byte. */ \ + if (__builtin_expect (inptr + 1 >= inend, 0)) \ + { \ + /* The second character is not available. \ + Store the intermediate result. */ \ + result = __GCONV_INCOMPLETE_INPUT; \ + break; \ + } \ + \ + ch = (ch * 0x100) + inptr[1]; \ + while (ch > rp2->end) \ + ++rp2; \ + \ + if (__builtin_expect (rp2 == NULL, 0) \ + || __builtin_expect (ch < rp2->start, 0) \ + || (res = __ibm943db_to_ucs4[ch + rp2->idx], \ + __builtin_expect (res, '\1') == 0 && ch !=0)) \ + { \ + /* This is an illegal character. */ \ + if (! ignore_errors_p ()) \ + { \ + result = __GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + ++*irreversible; \ + inptr += 2; \ + continue; \ + } \ + else \ + { \ + put32 (outptr, res); \ + outptr += 4; \ + inptr += 2; \ + } \ + } \ + else \ + { \ + if (res == 0x1c) \ + res = 0x1a; \ + else if (res == 0x7f) \ + res = 0x1c; \ + else if (res == 0xa5) \ + res = 0x5c; \ + else if (res == 0x203e) \ + res = 0x7e; \ + else if (res == 0x1a) \ + res = 0x7f; \ + put32 (outptr, res); \ + outptr += 4; \ + inptr++; \ + } \ + } +#define LOOP_NEED_FLAGS +#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 \ + { \ + const struct gap *rp = __ucs4_to_ibm943sb_idx; \ + unsigned char sc; \ + uint32_t ch = get32(inptr); \ + uint16_t found = TRUE; \ + uint32_t i; \ + uint32_t low; \ + uint32_t high; \ + uint16_t pccode; \ + \ + if (__builtin_expect (ch, 0) >= 0xffff) \ + rp = NULL; \ + else \ + while (ch > rp->end) \ + ++rp; \ + \ + /* Use the UCS4 table for single byte. */ \ + if (__builtin_expect (rp == NULL, 0) \ + || __builtin_expect (ch < rp->start, 0) \ + || (sc = __ucs4_to_ibm943sb[ch + rp->idx], \ + __builtin_expect (sc, '\1') == '\0' && ch != L'\0')) \ + { \ + \ + /* Use the UCS4 table for double byte. */ \ + found = FALSE; \ + low = 0; \ + high = (sizeof (__ucs4_to_ibm943db) >> 1) \ + / sizeof (__ucs4_to_ibm943db[0][FROM]); \ + pccode = ch; \ + while (low <= high) \ + { \ + i = (low + high) >> 1; \ + if (pccode < __ucs4_to_ibm943db[i][FROM]) \ + high = i - 1; \ + else if (pccode > __ucs4_to_ibm943db[i][FROM]) \ + low = i + 1; \ + else \ + { \ + pccode = __ucs4_to_ibm943db[i][TO]; \ + found = TRUE; \ + break; \ + } \ + } \ + if (found) \ + { \ + if (__builtin_expect (outptr + 2 > outend, 0)) \ + { \ + result = __GCONV_FULL_OUTPUT; \ + break; \ + } \ + *outptr++ = pccode >> 8 & 0xff; \ + *outptr++ = pccode & 0xff; \ + } \ + else \ + { \ + /* This is an illegal character. */ \ + if (! ignore_errors_p ()) \ + { \ + result = __GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + ++*irreversible; \ + } \ + } \ + else \ + { \ + if (__builtin_expect (outptr + 1 > outend, 0)) \ + { \ + result = __GCONV_FULL_OUTPUT; \ + break; \ + } \ + if (ch == 0x5c) \ + *outptr++ = 0x5c; \ + else if (ch == 0x7e) \ + *outptr++ = 0x7e; \ + else \ + *outptr++ = sc; \ + } \ + \ + /* Now that we wrote the output increment the input pointer. */ \ + inptr += 4; \ + } +#define LOOP_NEED_FLAGS +#include <iconv/loop.c> + +/* Now define the toplevel functions. */ +#include <iconv/skeleton.c> |