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Diffstat (limited to 'iconvdata/shift_jisx0213.c')
| -rw-r--r-- | iconvdata/shift_jisx0213.c | 441 |
1 files changed, 441 insertions, 0 deletions
diff --git a/iconvdata/shift_jisx0213.c b/iconvdata/shift_jisx0213.c new file mode 100644 index 0000000000..81fef70ac0 --- /dev/null +++ b/iconvdata/shift_jisx0213.c @@ -0,0 +1,441 @@ +/* Conversion from and to Shift_JISX0213. + Copyright (C) 2002 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Bruno Haible <bruno@clisp.org>, 2002. + + 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <dlfcn.h> +#include <stdint.h> +#include <gconv.h> + +/* The structure of Shift_JISX0213 is as follows: + + 0x00..0x7F: ISO646-JP, an ASCII variant + + 0x{A1..DF}: JISX0201 Katakana. + + 0x{81..9F,E0..EF}{40..7E,80..FC}: JISX0213 plane 1. + + 0x{F0..FC}{40..7E,80..FC}: JISX0213 plane 2, with irregular row mapping. + + Note that some JISX0213 characters are not contained in Unicode 3.2 + and are therefore best represented as sequences of Unicode characters. +*/ + +#include "jisx0213.h" + +/* Definitions used in the body of the `gconv' function. */ +#define CHARSET_NAME "SHIFT_JISX0213//" +#define FROM_LOOP from_shift_jisx0213 +#define TO_LOOP to_shift_jisx0213 +#define DEFINE_INIT 1 +#define DEFINE_FINI 1 +#define MIN_NEEDED_FROM 1 +#define MAX_NEEDED_FROM 2 +#define MIN_NEEDED_TO 4 +#define PREPARE_LOOP \ + int saved_state; \ + int *statep = &data->__statep->__count; +#define EXTRA_LOOP_ARGS , statep + + +/* Since we might have to reset input pointer we must be able to save + and restore the state. */ +#define SAVE_RESET_STATE(Save) \ + if (Save) \ + saved_state = *statep; \ + else \ + *statep = saved_state + + +/* During Shift_JISX0213 to UCS-4 conversion, the COUNT element of the state + contains the last UCS-4 character, shifted by 3 bits. + During UCS-4 to Shift_JISX0213 conversion, the COUNT element of the state + contains the last two bytes to be output, shifted by 3 bits. */ + +/* Since this is a stateful encoding we have to provide code which resets + the output state to the initial state. This has to be done during the + flushing. */ +#define EMIT_SHIFT_TO_INIT \ + if (data->__statep->__count != 0) \ + { \ + if (FROM_DIRECTION) \ + { \ + if (__builtin_expect (outbuf + 4 <= outend, 1)) \ + { \ + /* Write out the last character. */ \ + *((uint32_t *) outbuf)++ = data->__statep->__count >> 3; \ + data->__statep->__count = 0; \ + } \ + else \ + /* We don't have enough room in the output buffer. */ \ + status = __GCONV_FULL_OUTPUT; \ + } \ + else \ + { \ + if (__builtin_expect (outbuf + 2 <= outend, 1)) \ + { \ + /* Write out the last character. */ \ + uint32_t lasttwo = data->__statep->__count >> 3; \ + *outbuf++ = (lasttwo >> 8) & 0xff; \ + *outbuf++ = lasttwo & 0xff; \ + data->__statep->__count = 0; \ + } \ + else \ + /* We don't have enough room in the output buffer. */ \ + status = __GCONV_FULL_OUTPUT; \ + } \ + } + + +/* First define the conversion function from Shift_JISX0213 to UCS-4. */ +#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; \ + \ + /* Determine whether there is a buffered character pending. */ \ + ch = *statep >> 3; \ + if (__builtin_expect (ch == 0, 1)) \ + { \ + /* No - so look at the next input byte. */ \ + ch = *inptr; \ + if (ch < 0x80) \ + { \ + /* Plain ISO646-JP character. */ \ + if (__builtin_expect (ch == 0x5c, 0)) \ + ch = 0xa5; \ + else if (__builtin_expect (ch == 0x7e, 0)) \ + ch = 0x203e; \ + ++inptr; \ + } \ + else if (ch >= 0xa1 && ch <= 0xdf) \ + { \ + /* Half-width katakana. */ \ + ch += 0xfec0; \ + ++inptr; \ + } \ + else if ((ch >= 0x81 && ch <= 0x9f) || (ch >= 0xe0 && ch <= 0xfc)) \ + { \ + /* Two byte character. */ \ + uint32_t ch2; \ + \ + if (__builtin_expect (inptr + 1 >= inend, 0)) \ + { \ + /* The second byte is not available. */ \ + result = __GCONV_INCOMPLETE_INPUT; \ + break; \ + } \ + \ + ch2 = inptr[1]; \ + \ + /* The second byte must be in the range 0x{40..7E,80..FC}. */ \ + if (__builtin_expect (ch2 < 0x40 || ch2 == 0x7f || ch2 > 0xfc, 0))\ + { \ + /* This is an illegal character. */ \ + if (! ignore_errors_p ()) \ + { \ + result = __GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + \ + ++inptr; \ + ++*irreversible; \ + break; \ + } \ + \ + /* Convert to row and column. */ \ + if (ch < 0xe0) \ + ch -= 0x81; \ + else \ + ch -= 0xc1; \ + if (ch2 < 0x80) \ + ch2 -= 0x40; \ + else \ + ch2 -= 0x41; \ + /* Now 0 <= ch <= 0x3b, 0 <= ch2 <= 0xbb. */ \ + ch = 2 * ch; \ + if (ch2 >= 0x5e) \ + ch2 -= 0x5e, ch++; \ + ch2 += 0x21; \ + if (ch >= 0x5e) \ + { \ + /* Handling of JISX 0213 plane 2 rows. */ \ + if (ch >= 0x67) \ + ch += 230; \ + else if (ch >= 0x63 || ch == 0x5f) \ + ch += 168; \ + else \ + ch += 162; \ + } \ + \ + ch = jisx0213_to_ucs4 (0x121 + ch, ch2); \ + \ + if (ch == 0) \ + { \ + /* This is an illegal character. */ \ + if (! ignore_errors_p ()) \ + { \ + result = __GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + \ + ++inptr; \ + ++*irreversible; \ + break; \ + } \ + \ + inptr += 2; \ + \ + if (ch < 0x80) \ + { \ + /* It's a combining character. */ \ + uint32_t u1 = __jisx0213_to_ucs_combining[ch - 1][0]; \ + uint32_t u2 = __jisx0213_to_ucs_combining[ch - 1][1]; \ + \ + /* See whether we have room for two characters. */ \ + if (outptr + 8 <= outend) \ + { \ + put32 (outptr, u1); \ + outptr += 4; \ + put32 (outptr, u2); \ + outptr += 4; \ + continue; \ + } \ + \ + /* Otherwise store only the first character now, and \ + put the second one into the queue. */ \ + ch = u1; \ + *statep = u2 << 3; \ + } \ + } \ + else \ + { \ + /* This is illegal. */ \ + if (! ignore_errors_p ()) \ + { \ + result = __GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + \ + ++inptr; \ + ++*irreversible; \ + continue; \ + } \ + } \ + \ + put32 (outptr, ch); \ + outptr += 4; \ + } +#define LOOP_NEED_FLAGS +#define EXTRA_LOOP_DECLS , int *statep +#include <iconv/loop.c> + + +/* Next, define the other direction, from UCS-4 to Shift_JISX0213. */ + +/* Composition tables for each of the relevant combining characters. */ +static const struct +{ + uint16_t base; + uint16_t composed; +} comp_table_data[] = +{ +#define COMP_TABLE_IDX_02E5 0 +#define COMP_TABLE_LEN_02E5 1 + { 0x8684, 0x8685 }, /* 0x12B65 = 0x12B64 U+02E5 */ +#define COMP_TABLE_IDX_02E9 (COMP_TABLE_IDX_02E5 + COMP_TABLE_LEN_02E5) +#define COMP_TABLE_LEN_02E9 1 + { 0x8680, 0x8686 }, /* 0x12B66 = 0x12B60 U+02E9 */ +#define COMP_TABLE_IDX_0300 (COMP_TABLE_IDX_02E9 + COMP_TABLE_LEN_02E9) +#define COMP_TABLE_LEN_0300 5 + { 0x857b, 0x8663 }, /* 0x12B44 = 0x1295C U+0300 */ + { 0x8657, 0x8667 }, /* 0x12B48 = 0x12B38 U+0300 */ + { 0x8656, 0x8669 }, /* 0x12B4A = 0x12B37 U+0300 */ + { 0x864f, 0x866b }, /* 0x12B4C = 0x12B30 U+0300 */ + { 0x8662, 0x866d }, /* 0x12B4E = 0x12B43 U+0300 */ +#define COMP_TABLE_IDX_0301 (COMP_TABLE_IDX_0300 + COMP_TABLE_LEN_0300) +#define COMP_TABLE_LEN_0301 4 + { 0x8657, 0x8668 }, /* 0x12B49 = 0x12B38 U+0301 */ + { 0x8656, 0x866a }, /* 0x12B4B = 0x12B37 U+0301 */ + { 0x864f, 0x866c }, /* 0x12B4D = 0x12B30 U+0301 */ + { 0x8662, 0x866e }, /* 0x12B4F = 0x12B43 U+0301 */ +#define COMP_TABLE_IDX_309A (COMP_TABLE_IDX_0301 + COMP_TABLE_LEN_0301) +#define COMP_TABLE_LEN_309A 14 + { 0x82a9, 0x82f5 }, /* 0x12477 = 0x1242B U+309A */ + { 0x82ab, 0x82f6 }, /* 0x12478 = 0x1242D U+309A */ + { 0x82ad, 0x82f7 }, /* 0x12479 = 0x1242F U+309A */ + { 0x82af, 0x82f8 }, /* 0x1247A = 0x12431 U+309A */ + { 0x82b1, 0x82f9 }, /* 0x1247B = 0x12433 U+309A */ + { 0x834a, 0x8397 }, /* 0x12577 = 0x1252B U+309A */ + { 0x834c, 0x8398 }, /* 0x12578 = 0x1252D U+309A */ + { 0x834e, 0x8399 }, /* 0x12579 = 0x1252F U+309A */ + { 0x8350, 0x839a }, /* 0x1257A = 0x12531 U+309A */ + { 0x8352, 0x839b }, /* 0x1257B = 0x12533 U+309A */ + { 0x835a, 0x839c }, /* 0x1257C = 0x1253B U+309A */ + { 0x8363, 0x839d }, /* 0x1257D = 0x12544 U+309A */ + { 0x8367, 0x839e }, /* 0x1257E = 0x12548 U+309A */ + { 0x83f3, 0x83f6 }, /* 0x12678 = 0x12675 U+309A */ +}; + +#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); \ + \ + if ((*statep >> 3) != 0) \ + { \ + /* Attempt to combine the last character with this one. */ \ + uint16_t lasttwo = *statep >> 3; \ + unsigned int idx; \ + unsigned int len; \ + \ + if (ch == 0x02e5) \ + idx = COMP_TABLE_IDX_02E5, len = COMP_TABLE_LEN_02E5; \ + else if (ch == 0x02e9) \ + idx = COMP_TABLE_IDX_02E9, len = COMP_TABLE_LEN_02E9; \ + else if (ch == 0x0300) \ + idx = COMP_TABLE_IDX_0300, len = COMP_TABLE_LEN_0300; \ + else if (ch == 0x0301) \ + idx = COMP_TABLE_IDX_0301, len = COMP_TABLE_LEN_0301; \ + else if (ch == 0x309a) \ + idx = COMP_TABLE_IDX_309A, len = COMP_TABLE_LEN_309A; \ + else \ + goto not_combining; \ + \ + do \ + if (comp_table_data[idx].base == lasttwo) \ + break; \ + while (++idx, --len > 0); \ + \ + if (len > 0) \ + { \ + /* Output the combined character. */ \ + if (__builtin_expect (outptr + 1 >= outend, 0)) \ + { \ + result = __GCONV_FULL_OUTPUT; \ + break; \ + } \ + lasttwo = comp_table_data[idx].composed; \ + *outptr++ = (lasttwo >> 8) & 0xff; \ + *outptr++ = lasttwo & 0xff; \ + *statep = 0; \ + inptr += 4; \ + continue; \ + } \ + \ + not_combining: \ + /* Output the buffered character. */ \ + if (__builtin_expect (outptr + 1 >= outend, 0)) \ + { \ + result = __GCONV_FULL_OUTPUT; \ + break; \ + } \ + *outptr++ = (lasttwo >> 8) & 0xff; \ + *outptr++ = lasttwo & 0xff; \ + *statep = 0; \ + continue; \ + } \ + \ + if (ch < 0x80) \ + /* Plain ISO646-JP character. */ \ + *outptr++ = ch; \ + else if (ch == 0xa5) \ + *outptr++ = 0x5c; \ + else if (ch == 0x203e) \ + *outptr++ = 0x7e; \ + else if (ch >= 0xff61 && ch <= 0xff9f) \ + /* Half-width katakana. */ \ + *outptr++ = ch - 0xfec0; \ + else \ + { \ + unsigned int s1, s2; \ + \ + ch = ucs4_to_jisx0213 (ch); \ + if (ch == 0) \ + { \ + UNICODE_TAG_HANDLER (ch, 4); \ + \ + /* Illegal character. */ \ + STANDARD_ERR_HANDLER (4); \ + } \ + \ + /* Convert it to shifted representation. */ \ + s1 = ch >> 8; \ + s2 = ch & 0x7f; \ + s1 -= 0x21; \ + s2 -= 0x21; \ + if (s1 >= 0x5e) \ + { \ + /* Handling of JISX 0213 plane 2 rows. */ \ + if (s1 >= 0xcd) /* rows 0x26E..0x27E */ \ + s1 -= 102; \ + else if (s1 >= 0x8b || s1 == 0x87) /* rows 0x228, 0x22C..0x22F */ \ + s1 -= 40; \ + else /* rows 0x221, 0x223..0x225 */ \ + s1 -= 34; \ + /* Now 0x5e <= s1 <= 0x77. */ \ + } \ + if (s1 & 1) \ + s2 += 0x5e; \ + s1 = s1 >> 1; \ + if (s1 < 0x1f) \ + s1 += 0x81; \ + else \ + s1 += 0xc1; \ + if (s2 < 0x3f) \ + s2 += 0x40; \ + else \ + s2 += 0x41; \ + \ + if (ch & 0x0080) \ + { \ + /* A possible match in comp_table_data. We have to buffer it. */\ + \ + /* We know it's a JISX 0213 plane 1 character. */ \ + assert ((ch & 0x8000) == 0); \ + \ + *statep = ((s1 << 8) | s2) << 3; \ + inptr += 4; \ + continue; \ + } \ + \ + /* Output the shifted representation. */ \ + if (__builtin_expect (outptr + 1 >= outend, 0)) \ + { \ + result = __GCONV_FULL_OUTPUT; \ + break; \ + } \ + *outptr++ = s1; \ + *outptr++ = s2; \ + } \ + \ + inptr += 4; \ + } +#define LOOP_NEED_FLAGS +#define EXTRA_LOOP_DECLS , int *statep +#include <iconv/loop.c> + + +/* Now define the toplevel functions. */ +#include <iconv/skeleton.c> |