| /* Conversion from and to Shift_JISX0213. |
| Copyright (C) 2002-2014 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, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #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 FROM_LOOP_MIN_NEEDED_FROM 1 |
| #define FROM_LOOP_MAX_NEEDED_FROM 2 |
| #define FROM_LOOP_MIN_NEEDED_TO 4 |
| #define FROM_LOOP_MAX_NEEDED_TO 8 |
| #define TO_LOOP_MIN_NEEDED_FROM 4 |
| #define TO_LOOP_MAX_NEEDED_FROM 4 |
| #define TO_LOOP_MIN_NEEDED_TO 1 |
| #define TO_LOOP_MAX_NEEDED_TO 2 |
| #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; \ |
| outbuf += sizeof (uint32_t); \ |
| 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 FROM_LOOP_MIN_NEEDED_FROM |
| #define MAX_NEEDED_INPUT FROM_LOOP_MAX_NEEDED_FROM |
| #define MIN_NEEDED_OUTPUT FROM_LOOP_MIN_NEEDED_TO |
| #define MAX_NEEDED_OUTPUT FROM_LOOP_MAX_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. */ \ |
| STANDARD_FROM_LOOP_ERR_HANDLER (1); \ |
| } \ |
| \ |
| /* 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. */ \ |
| STANDARD_FROM_LOOP_ERR_HANDLER (1); \ |
| } \ |
| \ |
| 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]; \ |
| \ |
| put32 (outptr, u1); \ |
| outptr += 4; \ |
| \ |
| /* See whether we have room for two characters. */ \ |
| if (outptr + 4 <= outend) \ |
| { \ |
| put32 (outptr, u2); \ |
| outptr += 4; \ |
| continue; \ |
| } \ |
| \ |
| /* Otherwise store only the first character now, and \ |
| put the second one into the queue. */ \ |
| *statep = u2 << 3; \ |
| /* Tell the caller why we terminate the loop. */ \ |
| result = __GCONV_FULL_OUTPUT; \ |
| break; \ |
| } \ |
| } \ |
| else \ |
| { \ |
| /* This is illegal. */ \ |
| STANDARD_FROM_LOOP_ERR_HANDLER (1); \ |
| } \ |
| } \ |
| \ |
| put32 (outptr, ch); \ |
| outptr += 4; \ |
| } |
| #define LOOP_NEED_FLAGS |
| #define EXTRA_LOOP_DECLS , int *statep |
| #define ONEBYTE_BODY \ |
| { \ |
| if (c < 0x80) \ |
| { \ |
| if (c == 0x5c) \ |
| return 0xa5; \ |
| if (c == 0x7e) \ |
| return 0x203e; \ |
| return c; \ |
| } \ |
| if (c >= 0xa1 && c <= 0xdf) \ |
| return 0xfec0 + c; \ |
| return WEOF; \ |
| } |
| #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 TO_LOOP_MIN_NEEDED_FROM |
| #define MAX_NEEDED_INPUT TO_LOOP_MAX_NEEDED_FROM |
| #define MIN_NEEDED_OUTPUT TO_LOOP_MIN_NEEDED_TO |
| #define MAX_NEEDED_OUTPUT TO_LOOP_MAX_NEEDED_TO |
| #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; \ |
| uint32_t jch = ucs4_to_jisx0213 (ch); \ |
| if (jch == 0) \ |
| { \ |
| UNICODE_TAG_HANDLER (ch, 4); \ |
| \ |
| /* Illegal character. */ \ |
| STANDARD_TO_LOOP_ERR_HANDLER (4); \ |
| } \ |
| \ |
| /* Convert it to shifted representation. */ \ |
| s1 = jch >> 8; \ |
| s2 = jch & 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 (jch & 0x0080) \ |
| { \ |
| /* A possible match in comp_table_data. We have to buffer it. */\ |
| \ |
| /* We know it's a JISX 0213 plane 1 character. */ \ |
| assert ((jch & 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> |
