From 6daac4eb3604736e20e8af5733f698eb144f0c2a Mon Sep 17 00:00:00 2001 From: pixel Date: Tue, 31 Jan 2006 17:02:38 +0000 Subject: Way too much changes - all over. --- MSVC/iconv/iso2022_jp3.h | 534 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 534 insertions(+) create mode 100644 MSVC/iconv/iso2022_jp3.h (limited to 'MSVC/iconv/iso2022_jp3.h') diff --git a/MSVC/iconv/iso2022_jp3.h b/MSVC/iconv/iso2022_jp3.h new file mode 100644 index 0000000..4880a46 --- /dev/null +++ b/MSVC/iconv/iso2022_jp3.h @@ -0,0 +1,534 @@ +/* + * Copyright (C) 1999-2002 Free Software Foundation, Inc. + * This file is part of the GNU LIBICONV Library. + * + * The GNU LIBICONV 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 LIBICONV 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 LIBICONV 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. + */ + +/* + * ISO-2022-JP-3 + */ + +#include "jisx0213.h" + +#define ESC 0x1b + +/* + * The state is composed of one of the following values + */ +#define STATE_ASCII 0 /* Esc ( B */ +#define STATE_JISX0201ROMAN 1 /* Esc ( J */ +#define STATE_JISX0201KATAKANA 2 /* Esc ( I */ +#define STATE_JISX0208 3 /* Esc $ @ or Esc $ B */ +#define STATE_JISX02131 4 /* Esc $ ( O */ +#define STATE_JISX02132 5 /* Esc $ ( P */ + +/* + * In the ISO-2022-JP-3 to UCS-4 direction, the state also holds the last + * character to be output, shifted by 3 bits. + */ + +static int +iso2022_jp3_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n) +{ + ucs4_t last_wc = conv->istate >> 3; + if (last_wc) { + /* Output the buffered character. */ + conv->istate &= 7; + *pwc = last_wc; + return 0; /* Don't advance the input pointer. */ + } else { + state_t state = conv->istate; + int count = 0; + unsigned char c; + for (;;) { + c = *s; + if (c == ESC) { + if (n < count+3) + goto none; + if (s[1] == '(') { + if (s[2] == 'B') { + state = STATE_ASCII; + s += 3; count += 3; + if (n < count+1) + goto none; + continue; + } + if (s[2] == 'J') { + state = STATE_JISX0201ROMAN; + s += 3; count += 3; + if (n < count+1) + goto none; + continue; + } + if (s[2] == 'I') { + state = STATE_JISX0201KATAKANA; + s += 3; count += 3; + if (n < count+1) + goto none; + continue; + } + return RET_ILSEQ; + } + if (s[1] == '$') { + if (s[2] == '@' || s[2] == 'B') { + /* We don't distinguish JIS X 0208-1978 and JIS X 0208-1983. */ + state = STATE_JISX0208; + s += 3; count += 3; + if (n < count+1) + goto none; + continue; + } + if (s[2] == '(') { + if (n < count+4) + goto none; + if (s[3] == 'O') { + state = STATE_JISX02131; + s += 4; count += 4; + if (n < count+1) + goto none; + continue; + } + if (s[3] == 'P') { + state = STATE_JISX02132; + s += 4; count += 4; + if (n < count+1) + goto none; + continue; + } + } + return RET_ILSEQ; + } + return RET_ILSEQ; + } + break; + } + switch (state) { + case STATE_ASCII: + if (c < 0x80) { + int ret = ascii_mbtowc(conv,pwc,s,1); + if (ret == RET_ILSEQ) + return RET_ILSEQ; + if (ret != 1) abort(); + conv->istate = state; + return count+1; + } else + return RET_ILSEQ; + case STATE_JISX0201ROMAN: + if (c < 0x80) { + int ret = jisx0201_mbtowc(conv,pwc,s,1); + if (ret == RET_ILSEQ) + return RET_ILSEQ; + if (ret != 1) abort(); + conv->istate = state; + return count+1; + } else + return RET_ILSEQ; + case STATE_JISX0201KATAKANA: + if (c < 0x80) { + unsigned char buf = c+0x80; + int ret = jisx0201_mbtowc(conv,pwc,&buf,1); + if (ret == RET_ILSEQ) + return RET_ILSEQ; + if (ret != 1) abort(); + conv->istate = state; + return count+1; + } else + return RET_ILSEQ; + case STATE_JISX0208: + if (n < count+2) + goto none; + if (s[0] < 0x80 && s[1] < 0x80) { + int ret = jisx0208_mbtowc(conv,pwc,s,2); + if (ret == RET_ILSEQ) + return RET_ILSEQ; + if (ret != 2) abort(); + conv->istate = state; + return count+2; + } else + return RET_ILSEQ; + case STATE_JISX02131: + case STATE_JISX02132: + if (n < count+2) + goto none; + if (s[0] < 0x80 && s[1] < 0x80) { + ucs4_t wc = jisx0213_to_ucs4(((state-STATE_JISX02131+1)<<8)+s[0],s[1]); + if (wc) { + if (wc < 0x80) { + /* It's a combining character. */ + ucs4_t wc1 = jisx0213_to_ucs_combining[wc - 1][0]; + ucs4_t wc2 = jisx0213_to_ucs_combining[wc - 1][1]; + /* We cannot output two Unicode characters at once. So, + output the first character and buffer the second one. */ + *pwc = wc1; + conv->istate = (wc2 << 3) | state; + } else { + *pwc = wc; + conv->istate = state; + } + return count+2; + } + } + return RET_ILSEQ; + default: abort(); + } + none: + conv->istate = state; + return RET_TOOFEW(count); + } +} + +static int +iso2022_jp3_flushwc (conv_t conv, ucs4_t *pwc) +{ + ucs4_t last_wc = conv->istate >> 3; + if (last_wc) { + /* Output the buffered character. */ + conv->istate &= 7; + *pwc = last_wc; + return 1; + } else + return 0; +} + +/* + * In the UCS-4 to ISO-2022-JP-3 direction, the state also holds the last two + * bytes to be output, shifted by 3 bits, and the STATE_xxxxx value that was + * effective before this buffered character, shifted by 19 bits. + */ + +/* Composition tables for each of the relevant combining characters. */ +static const struct { unsigned short base; unsigned short composed; } iso2022_jp3_comp_table_data[] = { +#define iso2022_jp3_comp_table02e5_idx 0 +#define iso2022_jp3_comp_table02e5_len 1 + { 0x2b64, 0x2b65 }, /* 0x12B65 = 0x12B64 U+02E5 */ +#define iso2022_jp3_comp_table02e9_idx (iso2022_jp3_comp_table02e5_idx+iso2022_jp3_comp_table02e5_len) +#define iso2022_jp3_comp_table02e9_len 1 + { 0x2b60, 0x2b66 }, /* 0x12B66 = 0x12B60 U+02E9 */ +#define iso2022_jp3_comp_table0300_idx (iso2022_jp3_comp_table02e9_idx+iso2022_jp3_comp_table02e9_len) +#define iso2022_jp3_comp_table0300_len 5 + { 0x295c, 0x2b44 }, /* 0x12B44 = 0x1295C U+0300 */ + { 0x2b38, 0x2b48 }, /* 0x12B48 = 0x12B38 U+0300 */ + { 0x2b37, 0x2b4a }, /* 0x12B4A = 0x12B37 U+0300 */ + { 0x2b30, 0x2b4c }, /* 0x12B4C = 0x12B30 U+0300 */ + { 0x2b43, 0x2b4e }, /* 0x12B4E = 0x12B43 U+0300 */ +#define iso2022_jp3_comp_table0301_idx (iso2022_jp3_comp_table0300_idx+iso2022_jp3_comp_table0300_len) +#define iso2022_jp3_comp_table0301_len 4 + { 0x2b38, 0x2b49 }, /* 0x12B49 = 0x12B38 U+0301 */ + { 0x2b37, 0x2b4b }, /* 0x12B4B = 0x12B37 U+0301 */ + { 0x2b30, 0x2b4d }, /* 0x12B4D = 0x12B30 U+0301 */ + { 0x2b43, 0x2b4f }, /* 0x12B4F = 0x12B43 U+0301 */ +#define iso2022_jp3_comp_table309a_idx (iso2022_jp3_comp_table0301_idx+iso2022_jp3_comp_table0301_len) +#define iso2022_jp3_comp_table309a_len 14 + { 0x242b, 0x2477 }, /* 0x12477 = 0x1242B U+309A */ + { 0x242d, 0x2478 }, /* 0x12478 = 0x1242D U+309A */ + { 0x242f, 0x2479 }, /* 0x12479 = 0x1242F U+309A */ + { 0x2431, 0x247a }, /* 0x1247A = 0x12431 U+309A */ + { 0x2433, 0x247b }, /* 0x1247B = 0x12433 U+309A */ + { 0x252b, 0x2577 }, /* 0x12577 = 0x1252B U+309A */ + { 0x252d, 0x2578 }, /* 0x12578 = 0x1252D U+309A */ + { 0x252f, 0x2579 }, /* 0x12579 = 0x1252F U+309A */ + { 0x2531, 0x257a }, /* 0x1257A = 0x12531 U+309A */ + { 0x2533, 0x257b }, /* 0x1257B = 0x12533 U+309A */ + { 0x253b, 0x257c }, /* 0x1257C = 0x1253B U+309A */ + { 0x2544, 0x257d }, /* 0x1257D = 0x12544 U+309A */ + { 0x2548, 0x257e }, /* 0x1257E = 0x12548 U+309A */ + { 0x2675, 0x2678 }, /* 0x12678 = 0x12675 U+309A */ +}; + +#define SPLIT_STATE \ + unsigned short lasttwo = state >> 3; state_t prevstate = state >> 19; state &= 7 +#define COMBINE_STATE \ + state |= (prevstate << 19) | (lasttwo << 3) +#define COMBINE_STATE_NO_LASTTWO \ + /* assume lasttwo == 0, then prevstate is ignored */ + +static int +iso2022_jp3_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n) +{ + int count = 0; + unsigned char buf[2]; + unsigned short jch; + int ret; + state_t state = conv->ostate; + SPLIT_STATE; + + if (lasttwo) { + /* Attempt to combine the last character with this one. */ + unsigned int idx; + unsigned int len; + + if (wc == 0x02e5) + idx = iso2022_jp3_comp_table02e5_idx, + len = iso2022_jp3_comp_table02e5_len; + else if (wc == 0x02e9) + idx = iso2022_jp3_comp_table02e9_idx, + len = iso2022_jp3_comp_table02e9_len; + else if (wc == 0x0300) + idx = iso2022_jp3_comp_table0300_idx, + len = iso2022_jp3_comp_table0300_len; + else if (wc == 0x0301) + idx = iso2022_jp3_comp_table0301_idx, + len = iso2022_jp3_comp_table0301_len; + else if (wc == 0x309a) + idx = iso2022_jp3_comp_table309a_idx, + len = iso2022_jp3_comp_table309a_len; + else + goto not_combining; + + do + if (iso2022_jp3_comp_table_data[idx].base == lasttwo) + break; + while (++idx, --len > 0); + + if (len > 0) { + /* Output the combined character. */ + /* We know the combined character is in JISX0213 plane 1, but + the buffered character may have been in JISX0208 or in + JISX0213 plane 1. */ + count = (state != STATE_JISX02131 ? 4 : 0) + 2; + if (n < count) + return RET_TOOSMALL; + if (state != STATE_JISX02131) { + r[0] = ESC; + r[1] = '$'; + r[2] = '('; + r[3] = 'O'; + r += 4; + state = STATE_JISX02131; + } + lasttwo = iso2022_jp3_comp_table_data[idx].composed; + r[0] = (lasttwo >> 8) & 0xff; + r[1] = lasttwo & 0xff; + COMBINE_STATE_NO_LASTTWO; + conv->ostate = state; + return count; + } + + not_combining: + /* Output the buffered character. */ + /* We know it is in JISX0208 or in JISX0213 plane 1. */ + count = (prevstate != state ? 3 : 0) + 2; + if (n < count) + return RET_TOOSMALL; + if (prevstate != state) { + if (state != STATE_JISX0208) abort(); + r[0] = ESC; + r[1] = '$'; + r[2] = 'B'; + r += 3; + } + r[0] = (lasttwo >> 8) & 0xff; + r[1] = lasttwo & 0xff; + r += 2; + } + + /* Try ASCII. */ + ret = ascii_wctomb(conv,buf,wc,1); + if (ret != RET_ILUNI) { + if (ret != 1) abort(); + if (buf[0] < 0x80) { + count += (state == STATE_ASCII ? 1 : 4); + if (n < count) + return RET_TOOSMALL; + if (state != STATE_ASCII) { + r[0] = ESC; + r[1] = '('; + r[2] = 'B'; + r += 3; + state = STATE_ASCII; + } + r[0] = buf[0]; + COMBINE_STATE_NO_LASTTWO; + conv->ostate = state; + return count; + } + } + + /* Try JIS X 0201-1976 Roman. */ + ret = jisx0201_wctomb(conv,buf,wc,1); + if (ret != RET_ILUNI) { + if (ret != 1) abort(); + if (buf[0] < 0x80) { + count += (state == STATE_JISX0201ROMAN ? 1 : 4); + if (n < count) + return RET_TOOSMALL; + if (state != STATE_JISX0201ROMAN) { + r[0] = ESC; + r[1] = '('; + r[2] = 'J'; + r += 3; + state = STATE_JISX0201ROMAN; + } + r[0] = buf[0]; + COMBINE_STATE_NO_LASTTWO; + conv->ostate = state; + return count; + } + } + + jch = ucs4_to_jisx0213(wc); + + /* Try JIS X 0208-1990 in place of JIS X 0208-1978 and JIS X 0208-1983. */ + ret = jisx0208_wctomb(conv,buf,wc,2); + if (ret != RET_ILUNI) { + if (ret != 2) abort(); + if (buf[0] < 0x80 && buf[1] < 0x80) { + if (jch & 0x0080) { + /* A possible match in comp_table_data. Buffer it. */ + prevstate = state; + lasttwo = jch & 0x7f7f; + state = STATE_JISX0208; + COMBINE_STATE; + conv->ostate = state; + return count; + } else { + count += (state == STATE_JISX0208 ? 2 : 5); + if (n < count) + return RET_TOOSMALL; + if (state != STATE_JISX0208) { + r[0] = ESC; + r[1] = '$'; + r[2] = 'B'; + r += 3; + state = STATE_JISX0208; + } + r[0] = buf[0]; + r[1] = buf[1]; + COMBINE_STATE_NO_LASTTWO; + conv->ostate = state; + return count; + } + } + } + + /* Try JISX 0213 plane 1 and JISX 0213 plane 2. */ + if (jch != 0) { + if (jch & 0x8000) { + /* JISX 0213 plane 2. */ + if (state != STATE_JISX02132) { + count += 4; + if (n < count) + return RET_TOOSMALL; + r[0] = ESC; + r[1] = '$'; + r[2] = '('; + r[3] = 'P'; + r += 4; + state = STATE_JISX02132; + } + } else { + /* JISX 0213 plane 1. */ + if (state != STATE_JISX02131) { + count += 4; + if (n < count) + return RET_TOOSMALL; + r[0] = ESC; + r[1] = '$'; + r[2] = '('; + r[3] = 'O'; + r += 4; + state = STATE_JISX02131; + } + } + 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. */ + if (jch & 0x8000) abort(); + prevstate = state; + lasttwo = jch & 0x7f7f; + COMBINE_STATE; + conv->ostate = state; + return count; + } + count += 2; + if (n < count) + return RET_TOOSMALL; + r[0] = (jch >> 8) & 0x7f; + r[1] = jch & 0x7f; + COMBINE_STATE_NO_LASTTWO; + conv->ostate = state; + return count; + } + + /* Try JIS X 0201-1976 Katakana. This is not officially part of + ISO-2022-JP-3. Therefore we try it after all other attempts. */ + ret = jisx0201_wctomb(conv,buf,wc,1); + if (ret != RET_ILUNI) { + if (ret != 1) abort(); + if (buf[0] >= 0x80) { + count += (state == STATE_JISX0201KATAKANA ? 1 : 4); + if (n < count) + return RET_TOOSMALL; + if (state != STATE_JISX0201KATAKANA) { + r[0] = ESC; + r[1] = '('; + r[2] = 'I'; + r += 3; + state = STATE_JISX0201KATAKANA; + } + r[0] = buf[0]-0x80; + COMBINE_STATE_NO_LASTTWO; + conv->ostate = state; + return count; + } + } + + return RET_ILUNI; +} + +static int +iso2022_jp3_reset (conv_t conv, unsigned char *r, int n) +{ + state_t state = conv->ostate; + SPLIT_STATE; + { + int count = + (lasttwo ? (prevstate != state ? 3 : 0) + 2 : 0) + + (state != STATE_ASCII ? 3 : 0); + if (n < count) + return RET_TOOSMALL; + if (lasttwo) { + if (prevstate != state) { + if (state != STATE_JISX0208) abort(); + r[0] = ESC; + r[1] = '$'; + r[2] = 'B'; + r += 3; + } + r[0] = (lasttwo >> 8) & 0xff; + r[1] = lasttwo & 0xff; + r += 2; + } + if (state != STATE_ASCII) { + r[0] = ESC; + r[1] = '('; + r[2] = 'B'; + } + /* conv->ostate = 0; will be done by the caller */ + return count; + } +} + +#undef COMBINE_STATE_NO_LASTTWO +#undef COMBINE_STATE +#undef SPLIT_STATE +#undef STATE_JISX02132 +#undef STATE_JISX02131 +#undef STATE_JISX0208 +#undef STATE_JISX0201KATAKANA +#undef STATE_JISX0201ROMAN +#undef STATE_ASCII -- cgit v1.2.3