/* Conversion from and to Shift_JISX0213. Copyright (C) 2002, 2004 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 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>