From 8f15b8128cf47ff679d4f0d3767605d0d0afcc3c Mon Sep 17 00:00:00 2001 From: naruse Date: Sun, 13 Jan 2008 17:16:09 +0000 Subject: * include/ruby/oniguruma.h: remove ONIG_ENCODING_* and OnigEncoding* which are not builtin. * regenc.{c,h} (onigenc_mb2_code_to_mbclen, onigenc_mb4_code_to_mbclen): fix prototype. * enc/big5.c, enc/euc_kr.c, enc/euc_tw.c, enc/gb18030.c, enc/koi8_r.c, enc/windows_1251.c: imported from Oniguruma. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15026 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- enc/gb18030.c | 500 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 500 insertions(+) create mode 100644 enc/gb18030.c (limited to 'enc/gb18030.c') diff --git a/enc/gb18030.c b/enc/gb18030.c new file mode 100644 index 0000000000..e3b72f264a --- /dev/null +++ b/enc/gb18030.c @@ -0,0 +1,500 @@ +/********************************************************************** + gb18030.c - Oniguruma (regular expression library) +**********************************************************************/ +/*- + * Copyright (c) 2005-2007 KUBO Takehiro + * K.Kosako + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include "regenc.h" + +OnigEncodingDeclare(GB18030); + +#if 1 +#define DEBUG_GB18030(arg) +#else +#define DEBUG_GB18030(arg) printf arg +#endif + +enum { + C1, /* one-byte char */ + C2, /* one-byte or second of two-byte char */ + C4, /* one-byte or second or fourth of four-byte char */ + CM /* first of two- or four-byte char or second of two-byte char */ +}; + +static const char GB18030_MAP[] = { + C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, + C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, + C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, + C4, C4, C4, C4, C4, C4, C4, C4, C4, C4, C1, C1, C1, C1, C1, C1, + C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, + C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, + C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, + C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C1, + C2, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, + CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, + CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, + CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, + CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, + CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, + CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, + CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, C1 +}; + +static int +gb18030_mbc_enc_len(const UChar* p, const UChar* end, OnigEncoding enc) +{ + if (GB18030_MAP[*p] != CM) + return 1; + p++; + if (GB18030_MAP[*p] == C4) + return 4; + if (GB18030_MAP[*p] == C1) + return 1; /* illegal sequence */ + return 2; +} + +static OnigCodePoint +gb18030_mbc_to_code(const UChar* p, const UChar* end, OnigEncoding enc) +{ + return onigenc_mbn_mbc_to_code(&OnigEncodingName(GB18030), p, end); +} + +static int +gb18030_code_to_mbc(OnigCodePoint code, UChar *buf, OnigEncoding enc) +{ + return onigenc_mb4_code_to_mbc(&OnigEncodingName(GB18030), code, buf); +} + +static int +gb18030_mbc_case_fold(OnigCaseFoldType flag, const UChar** pp, const UChar* end, + UChar* lower, OnigEncoding enc) +{ + return onigenc_mbn_mbc_case_fold(&OnigEncodingName(GB18030), flag, + pp, end, lower); +} + +#if 0 +static int +gb18030_is_mbc_ambiguous(OnigCaseFoldType flag, + const UChar** pp, const UChar* end, OnigEncoding enc) +{ + return onigenc_mbn_is_mbc_ambiguous(&OnigEncodingName(GB18030), flag, pp, end); +} +#endif + +static int +gb18030_is_code_ctype(OnigCodePoint code, unsigned int ctype, OnigEncoding enc) +{ + return onigenc_mb4_is_code_ctype(&OnigEncodingName(GB18030), code, ctype); +} + +enum state { + S_START, + S_one_C2, + S_one_C4, + S_one_CM, + + S_odd_CM_one_CX, + S_even_CM_one_CX, + + /* CMC4 : pair of "CM C4" */ + S_one_CMC4, + S_odd_CMC4, + S_one_C4_odd_CMC4, + S_even_CMC4, + S_one_C4_even_CMC4, + + S_odd_CM_odd_CMC4, + S_even_CM_odd_CMC4, + + S_odd_CM_even_CMC4, + S_even_CM_even_CMC4, + + /* C4CM : pair of "C4 CM" */ + S_odd_C4CM, + S_one_CM_odd_C4CM, + S_even_C4CM, + S_one_CM_even_C4CM, + + S_even_CM_odd_C4CM, + S_odd_CM_odd_C4CM, + S_even_CM_even_C4CM, + S_odd_CM_even_C4CM, +}; + +static UChar* +gb18030_left_adjust_char_head(const UChar* start, const UChar* s, OnigEncoding enc) +{ + const UChar *p; + enum state state = S_START; + + DEBUG_GB18030(("----------------\n")); + for (p = s; p >= start; p--) { + DEBUG_GB18030(("state %d --(%02x)-->\n", state, *p)); + switch (state) { + case S_START: + switch (GB18030_MAP[*p]) { + case C1: + return (UChar *)s; + case C2: + state = S_one_C2; /* C2 */ + break; + case C4: + state = S_one_C4; /* C4 */ + break; + case CM: + state = S_one_CM; /* CM */ + break; + } + break; + case S_one_C2: /* C2 */ + switch (GB18030_MAP[*p]) { + case C1: + case C2: + case C4: + return (UChar *)s; + case CM: + state = S_odd_CM_one_CX; /* CM C2 */ + break; + } + break; + case S_one_C4: /* C4 */ + switch (GB18030_MAP[*p]) { + case C1: + case C2: + case C4: + return (UChar *)s; + case CM: + state = S_one_CMC4; + break; + } + break; + case S_one_CM: /* CM */ + switch (GB18030_MAP[*p]) { + case C1: + case C2: + return (UChar *)s; + case C4: + state = S_odd_C4CM; + break; + case CM: + state = S_odd_CM_one_CX; /* CM CM */ + break; + } + break; + + case S_odd_CM_one_CX: /* CM C2 */ /* CM CM */ /* CM CM CM C4 */ + switch (GB18030_MAP[*p]) { + case C1: + case C2: + case C4: + return (UChar *)(s - 1); + case CM: + state = S_even_CM_one_CX; + break; + } + break; + case S_even_CM_one_CX: /* CM CM C2 */ /* CM CM CM */ /* CM CM C4 */ + switch (GB18030_MAP[*p]) { + case C1: + case C2: + case C4: + return (UChar *)s; + case CM: + state = S_odd_CM_one_CX; + break; + } + break; + + case S_one_CMC4: /* CM C4 */ + switch (GB18030_MAP[*p]) { + case C1: + case C2: + return (UChar *)(s - 1); + case C4: + state = S_one_C4_odd_CMC4; /* C4 CM C4 */ + break; + case CM: + state = S_even_CM_one_CX; /* CM CM C4 */ + break; + } + break; + case S_odd_CMC4: /* CM C4 CM C4 CM C4 */ + switch (GB18030_MAP[*p]) { + case C1: + case C2: + return (UChar *)(s - 1); + case C4: + state = S_one_C4_odd_CMC4; + break; + case CM: + state = S_odd_CM_odd_CMC4; + break; + } + break; + case S_one_C4_odd_CMC4: /* C4 CM C4 */ + switch (GB18030_MAP[*p]) { + case C1: + case C2: + case C4: + return (UChar *)(s - 1); + case CM: + state = S_even_CMC4; /* CM C4 CM C4 */ + break; + } + break; + case S_even_CMC4: /* CM C4 CM C4 */ + switch (GB18030_MAP[*p]) { + case C1: + case C2: + return (UChar *)(s - 3); + case C4: + state = S_one_C4_even_CMC4; + break; + case CM: + state = S_odd_CM_even_CMC4; + break; + } + break; + case S_one_C4_even_CMC4: /* C4 CM C4 CM C4 */ + switch (GB18030_MAP[*p]) { + case C1: + case C2: + case C4: + return (UChar *)(s - 3); + case CM: + state = S_odd_CMC4; + break; + } + break; + + case S_odd_CM_odd_CMC4: /* CM CM C4 CM C4 CM C4 */ + switch (GB18030_MAP[*p]) { + case C1: + case C2: + case C4: + return (UChar *)(s - 3); + case CM: + state = S_even_CM_odd_CMC4; + break; + } + break; + case S_even_CM_odd_CMC4: /* CM CM CM C4 CM C4 CM C4 */ + switch (GB18030_MAP[*p]) { + case C1: + case C2: + case C4: + return (UChar *)(s - 1); + case CM: + state = S_odd_CM_odd_CMC4; + break; + } + break; + + case S_odd_CM_even_CMC4: /* CM CM C4 CM C4 */ + switch (GB18030_MAP[*p]) { + case C1: + case C2: + case C4: + return (UChar *)(s - 1); + case CM: + state = S_even_CM_even_CMC4; + break; + } + break; + case S_even_CM_even_CMC4: /* CM CM CM C4 CM C4 */ + switch (GB18030_MAP[*p]) { + case C1: + case C2: + case C4: + return (UChar *)(s - 3); + case CM: + state = S_odd_CM_even_CMC4; + break; + } + break; + + case S_odd_C4CM: /* C4 CM */ /* C4 CM C4 CM C4 CM*/ + switch (GB18030_MAP[*p]) { + case C1: + case C2: + case C4: + return (UChar *)s; + case CM: + state = S_one_CM_odd_C4CM; /* CM C4 CM */ + break; + } + break; + case S_one_CM_odd_C4CM: /* CM C4 CM */ /* CM C4 CM C4 CM C4 CM */ + switch (GB18030_MAP[*p]) { + case C1: + case C2: + return (UChar *)(s - 2); /* |CM C4 CM */ + case C4: + state = S_even_C4CM; + break; + case CM: + state = S_even_CM_odd_C4CM; + break; + } + break; + case S_even_C4CM: /* C4 CM C4 CM */ + switch (GB18030_MAP[*p]) { + case C1: + case C2: + case C4: + return (UChar *)(s - 2); /* C4|CM C4 CM */ + case CM: + state = S_one_CM_even_C4CM; + break; + } + break; + case S_one_CM_even_C4CM: /* CM C4 CM C4 CM */ + switch (GB18030_MAP[*p]) { + case C1: + case C2: + return (UChar *)(s - 0); /*|CM C4 CM C4|CM */ + case C4: + state = S_odd_C4CM; + break; + case CM: + state = S_even_CM_even_C4CM; + break; + } + break; + + case S_even_CM_odd_C4CM: /* CM CM C4 CM */ + switch (GB18030_MAP[*p]) { + case C1: + case C2: + case C4: + return (UChar *)(s - 0); /* |CM CM|C4|CM */ + case CM: + state = S_odd_CM_odd_C4CM; + break; + } + break; + case S_odd_CM_odd_C4CM: /* CM CM CM C4 CM */ + switch (GB18030_MAP[*p]) { + case C1: + case C2: + case C4: + return (UChar *)(s - 2); /* |CM CM|CM C4 CM */ + case CM: + state = S_even_CM_odd_C4CM; + break; + } + break; + + case S_even_CM_even_C4CM: /* CM CM C4 CM C4 CM */ + switch (GB18030_MAP[*p]) { + case C1: + case C2: + case C4: + return (UChar *)(s - 2); /* |CM CM|C4|CM C4 CM */ + case CM: + state = S_odd_CM_even_C4CM; + break; + } + break; + case S_odd_CM_even_C4CM: /* CM CM CM C4 CM C4 CM */ + switch (GB18030_MAP[*p]) { + case C1: + case C2: + case C4: + return (UChar *)(s - 0); /* |CM CM|CM C4 CM C4|CM */ + case CM: + state = S_even_CM_even_C4CM; + break; + } + break; + } + } + + DEBUG_GB18030(("state %d\n", state)); + switch (state) { + case S_START: return (UChar *)(s - 0); + case S_one_C2: return (UChar *)(s - 0); + case S_one_C4: return (UChar *)(s - 0); + case S_one_CM: return (UChar *)(s - 0); + + case S_odd_CM_one_CX: return (UChar *)(s - 1); + case S_even_CM_one_CX: return (UChar *)(s - 0); + + case S_one_CMC4: return (UChar *)(s - 1); + case S_odd_CMC4: return (UChar *)(s - 1); + case S_one_C4_odd_CMC4: return (UChar *)(s - 1); + case S_even_CMC4: return (UChar *)(s - 3); + case S_one_C4_even_CMC4: return (UChar *)(s - 3); + + case S_odd_CM_odd_CMC4: return (UChar *)(s - 3); + case S_even_CM_odd_CMC4: return (UChar *)(s - 1); + + case S_odd_CM_even_CMC4: return (UChar *)(s - 1); + case S_even_CM_even_CMC4: return (UChar *)(s - 3); + + case S_odd_C4CM: return (UChar *)(s - 0); + case S_one_CM_odd_C4CM: return (UChar *)(s - 2); + case S_even_C4CM: return (UChar *)(s - 2); + case S_one_CM_even_C4CM: return (UChar *)(s - 0); + + case S_even_CM_odd_C4CM: return (UChar *)(s - 0); + case S_odd_CM_odd_C4CM: return (UChar *)(s - 2); + case S_even_CM_even_C4CM: return (UChar *)(s - 2); + case S_odd_CM_even_C4CM: return (UChar *)(s - 0); + } + + return (UChar* )s; /* never come here. (escape warning) */ +} + +static int +gb18030_is_allowed_reverse_match(const UChar* s, const UChar* end ARG_UNUSED, OnigEncoding enc) +{ + return GB18030_MAP[*s] == C1 ? TRUE : FALSE; +} + +OnigEncodingDefine(gb18030, GB18030) = { + gb18030_mbc_enc_len, + "GB18030", /* name */ + 4, /* max enc length */ + 1, /* min enc length */ + onigenc_is_mbc_newline_0x0a, + gb18030_mbc_to_code, + onigenc_mb4_code_to_mbclen, + gb18030_code_to_mbc, + gb18030_mbc_case_fold, + onigenc_ascii_apply_all_case_fold, + onigenc_ascii_get_case_fold_codes_by_str, + onigenc_minimum_property_name_to_ctype, + gb18030_is_code_ctype, + onigenc_not_support_get_ctype_code_range, + gb18030_left_adjust_char_head, + gb18030_is_allowed_reverse_match +}; +ENC_REPLICATE("GBK", "GB18030"); +ENC_ALIAS("CP936", "GBK"); +ENC_ALIAS("Windows-936", "GBK"); -- cgit v1.2.3