/* Conversion from and to EUC-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 EUC-JISX0213 is as follows: 0x00..0x7F: ASCII 0x8E{A1..FE}: JISX0201 Katakana, with prefix 0x8E, offset by +0x80. 0x8F{A1..FE}{A1..FE}: JISX0213 plane 2, with prefix 0x8F, offset by +0x8080. 0x{A1..FE}{A1..FE}: JISX0213 plane 1, offset by +0x8080. 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 "EUC-JISX0213//" #define FROM_LOOP from_euc_jisx0213 #define TO_LOOP to_euc_jisx0213 #define DEFINE_INIT 1 #define DEFINE_FINI 1 #define FROM_LOOP_MIN_NEEDED_FROM 1 #define FROM_LOOP_MAX_NEEDED_FROM 3 #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 3 #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 EUC-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 EUC-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 EUC-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 ASCII character. */ \ ++inptr; \ else if ((ch >= 0xa1 && ch <= 0xfe) || ch == 0x8e || ch == 0x8f) \ { \ /* Two or three 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 >= 0xa1 and <= 0xfe. */ \ if (__builtin_expect (ch2 < 0xa1 || ch2 > 0xfe, 0)) \ { \ /* This is an illegal character. */ \ STANDARD_FROM_LOOP_ERR_HANDLER (1); \ } \ \ if (ch == 0x8e) \ { \ /* Half-width katakana. */ \ if (__builtin_expect (ch2 > 0xdf, 0)) \ STANDARD_FROM_LOOP_ERR_HANDLER (1); \ \ ch = ch2 + 0xfec0; \ inptr += 2; \ } \ else \ { \ const unsigned char *endp; \ \ if (ch == 0x8f) \ { \ /* JISX 0213 plane 2. */ \ uint32_t ch3; \ \ if (__builtin_expect (inptr + 2 >= inend, 0)) \ { \ /* The third byte is not available. */ \ result = __GCONV_INCOMPLETE_INPUT; \ break; \ } \ \ ch3 = inptr[2]; \ endp = inptr + 3; \ \ ch = jisx0213_to_ucs4 (0x200 - 0x80 + ch2, ch3 ^ 0x80); \ } \ else \ { \ /* JISX 0213 plane 1. */ \ endp = inptr + 2; \ \ ch = jisx0213_to_ucs4 (0x100 - 0x80 + ch, ch2 ^ 0x80); \ } \ \ if (ch == 0) \ /* This is an illegal character. */ \ STANDARD_FROM_LOOP_ERR_HANDLER (1); \ \ inptr = endp; \ \ 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) \ return c; \ else \ return WEOF; \ } #include <iconv/loop.c> /* Next, define the other direction, from UCS-4 to EUC-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 { 0xabe4, 0xabe5 }, /* 0x12B65 = 0x12B64 U+02E5 */ #define COMP_TABLE_IDX_02E9 (COMP_TABLE_IDX_02E5 + COMP_TABLE_LEN_02E5) #define COMP_TABLE_LEN_02E9 1 { 0xabe0, 0xabe6 }, /* 0x12B66 = 0x12B60 U+02E9 */ #define COMP_TABLE_IDX_0300 (COMP_TABLE_IDX_02E9 + COMP_TABLE_LEN_02E9) #define COMP_TABLE_LEN_0300 5 { 0xa9dc, 0xabc4 }, /* 0x12B44 = 0x1295C U+0300 */ { 0xabb8, 0xabc8 }, /* 0x12B48 = 0x12B38 U+0300 */ { 0xabb7, 0xabca }, /* 0x12B4A = 0x12B37 U+0300 */ { 0xabb0, 0xabcc }, /* 0x12B4C = 0x12B30 U+0300 */ { 0xabc3, 0xabce }, /* 0x12B4E = 0x12B43 U+0300 */ #define COMP_TABLE_IDX_0301 (COMP_TABLE_IDX_0300 + COMP_TABLE_LEN_0300) #define COMP_TABLE_LEN_0301 4 { 0xabb8, 0xabc9 }, /* 0x12B49 = 0x12B38 U+0301 */ { 0xabb7, 0xabcb }, /* 0x12B4B = 0x12B37 U+0301 */ { 0xabb0, 0xabcd }, /* 0x12B4D = 0x12B30 U+0301 */ { 0xabc3, 0xabcf }, /* 0x12B4F = 0x12B43 U+0301 */ #define COMP_TABLE_IDX_309A (COMP_TABLE_IDX_0301 + COMP_TABLE_LEN_0301) #define COMP_TABLE_LEN_309A 14 { 0xa4ab, 0xa4f7 }, /* 0x12477 = 0x1242B U+309A */ { 0xa4ad, 0xa4f8 }, /* 0x12478 = 0x1242D U+309A */ { 0xa4af, 0xa4f9 }, /* 0x12479 = 0x1242F U+309A */ { 0xa4b1, 0xa4fa }, /* 0x1247A = 0x12431 U+309A */ { 0xa4b3, 0xa4fb }, /* 0x1247B = 0x12433 U+309A */ { 0xa5ab, 0xa5f7 }, /* 0x12577 = 0x1252B U+309A */ { 0xa5ad, 0xa5f8 }, /* 0x12578 = 0x1252D U+309A */ { 0xa5af, 0xa5f9 }, /* 0x12579 = 0x1252F U+309A */ { 0xa5b1, 0xa5fa }, /* 0x1257A = 0x12531 U+309A */ { 0xa5b3, 0xa5fb }, /* 0x1257B = 0x12533 U+309A */ { 0xa5bb, 0xa5fc }, /* 0x1257C = 0x1253B U+309A */ { 0xa5c4, 0xa5fd }, /* 0x1257D = 0x12544 U+309A */ { 0xa5c8, 0xa5fe }, /* 0x1257E = 0x12548 U+309A */ { 0xa6f5, 0xa6f8 }, /* 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 ASCII character. */ \ *outptr++ = ch; \ else if (ch >= 0xff61 && ch <= 0xff9f) \ { \ /* Half-width katakana. */ \ if (__builtin_expect (outptr + 1 >= outend, 0)) \ { \ result = __GCONV_FULL_OUTPUT; \ break; \ } \ *outptr++ = 0x8e; \ *outptr++ = ch - 0xfec0; \ } \ else \ { \ uint32_t jch = ucs4_to_jisx0213 (ch); \ if (jch == 0) \ { \ UNICODE_TAG_HANDLER (ch, 4); \ \ /* Illegal character. */ \ STANDARD_TO_LOOP_ERR_HANDLER (4); \ } \ \ 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 = (jch | 0x8080) << 3; \ inptr += 4; \ continue; \ } \ \ if (jch & 0x8000) \ { \ /* JISX 0213 plane 2. */ \ if (__builtin_expect (outptr + 2 >= outend, 0)) \ { \ result = __GCONV_FULL_OUTPUT; \ break; \ } \ *outptr++ = 0x8f; \ } \ else \ { \ /* JISX 0213 plane 1. */ \ if (__builtin_expect (outptr + 1 >= outend, 0)) \ { \ result = __GCONV_FULL_OUTPUT; \ break; \ } \ } \ *outptr++ = (jch >> 8) | 0x80; \ *outptr++ = (jch & 0xff) | 0x80; \ } \ \ 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>