diff options
author | Jari Vetoniemi <jari.vetoniemi@indooratlas.com> | 2020-03-16 18:49:26 +0900 |
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committer | Jari Vetoniemi <jari.vetoniemi@indooratlas.com> | 2020-03-30 00:39:06 +0900 |
commit | fcbf63e62c627deae76c1b8cb8c0876c536ed811 (patch) | |
tree | 64cb17de3f41a2b6fef2368028fbd00349946994 /jni/ruby/enc/utf_16be.c |
Fresh start
Diffstat (limited to 'jni/ruby/enc/utf_16be.c')
-rw-r--r-- | jni/ruby/enc/utf_16be.c | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/jni/ruby/enc/utf_16be.c b/jni/ruby/enc/utf_16be.c new file mode 100644 index 0000000..a61ae00 --- /dev/null +++ b/jni/ruby/enc/utf_16be.c @@ -0,0 +1,254 @@ +/********************************************************************** + utf_16be.c - Oniguruma (regular expression library) +**********************************************************************/ +/*- + * Copyright (c) 2002-2008 K.Kosako <sndgk393 AT ybb DOT ne DOT jp> + * 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" + +#if 0 +static const int EncLen_UTF16[] = { + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 4, 4, 4, 4, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 +}; +#endif + +static int +utf16be_mbc_enc_len(const UChar* p, const OnigUChar* e ARG_UNUSED, + OnigEncoding enc ARG_UNUSED) +{ + int byte = p[0]; + if (!UTF16_IS_SURROGATE(byte)) { + if (2 <= e-p) + return ONIGENC_CONSTRUCT_MBCLEN_CHARFOUND(2); + else + return ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE(1); + } + if (UTF16_IS_SURROGATE_FIRST(byte)) { + switch (e-p) { + case 1: return ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE(3); + case 2: return ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE(2); + case 3: + if (UTF16_IS_SURROGATE_SECOND(p[2])) + return ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE(1); + break; + default: + if (UTF16_IS_SURROGATE_SECOND(p[2])) + return ONIGENC_CONSTRUCT_MBCLEN_CHARFOUND(4); + break; + } + } + return ONIGENC_CONSTRUCT_MBCLEN_INVALID(); +} + +static int +utf16be_is_mbc_newline(const UChar* p, const UChar* end, + OnigEncoding enc) +{ + if (p + 1 < end) { + if (*(p+1) == 0x0a && *p == 0x00) + return 1; +#ifdef USE_UNICODE_ALL_LINE_TERMINATORS + if ((*(p+1) == 0x0b || *(p+1) == 0x0c || *(p+1) == 0x0d || *(p+1) == 0x85) + && *p == 0x00) + return 1; + if (*p == 0x20 && (*(p+1) == 0x29 || *(p+1) == 0x28)) + return 1; +#endif + } + return 0; +} + +static OnigCodePoint +utf16be_mbc_to_code(const UChar* p, const UChar* end ARG_UNUSED, + OnigEncoding enc) +{ + OnigCodePoint code; + + if (UTF16_IS_SURROGATE_FIRST(*p)) { + code = ((((p[0] << 8) + p[1]) & 0x03ff) << 10) + + (((p[2] << 8) + p[3]) & 0x03ff) + 0x10000; + } + else { + code = p[0] * 256 + p[1]; + } + return code; +} + +static int +utf16be_code_to_mbclen(OnigCodePoint code, + OnigEncoding enc) +{ + return (code > 0xffff ? 4 : 2); +} + +static int +utf16be_code_to_mbc(OnigCodePoint code, UChar *buf, + OnigEncoding enc) +{ + UChar* p = buf; + + if (code > 0xffff) { + unsigned int high = (code >> 10) + 0xD7C0; + unsigned int low = (code & 0x3FF) + 0xDC00; + *p++ = (high >> 8) & 0xFF; + *p++ = high & 0xFF; + *p++ = (low >> 8) & 0xFF; + *p++ = low & 0xFF; + return 4; + } + else { + *p++ = (UChar )((code & 0xff00) >> 8); + *p++ = (UChar )(code & 0xff); + return 2; + } +} + +static int +utf16be_mbc_case_fold(OnigCaseFoldType flag, + const UChar** pp, const UChar* end, UChar* fold, + OnigEncoding enc) +{ + const UChar* p = *pp; + + if (ONIGENC_IS_ASCII_CODE(*(p+1)) && *p == 0) { + p++; +#ifdef USE_UNICODE_CASE_FOLD_TURKISH_AZERI + if ((flag & ONIGENC_CASE_FOLD_TURKISH_AZERI) != 0) { + if (*p == 0x49) { + *fold++ = 0x01; + *fold = 0x31; + (*pp) += 2; + return 2; + } + } +#endif + + *fold++ = 0; + *fold = ONIGENC_ASCII_CODE_TO_LOWER_CASE(*p); + *pp += 2; + return 2; + } + else + return onigenc_unicode_mbc_case_fold(enc, flag, + pp, end, fold); +} + +#if 0 +static int +utf16be_is_mbc_ambiguous(OnigCaseFoldType flag, const UChar** pp, const UChar* end) +{ + const UChar* p = *pp; + + (*pp) += EncLen_UTF16[*p]; + + if (*p == 0) { + int c, v; + + p++; + if (*p == 0xdf && (flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) { + return TRUE; + } + + c = *p; + v = ONIGENC_IS_UNICODE_ISO_8859_1_BIT_CTYPE(c, + (BIT_CTYPE_UPPER | BIT_CTYPE_LOWER)); + + if ((v | BIT_CTYPE_LOWER) != 0) { + /* 0xaa, 0xb5, 0xba are lower case letter, but can't convert. */ + if (c >= 0xaa && c <= 0xba) + return FALSE; + else + return TRUE; + } + return (v != 0 ? TRUE : FALSE); + } + + return FALSE; +} +#endif + +static UChar* +utf16be_left_adjust_char_head(const UChar* start, const UChar* s, const UChar* end, + OnigEncoding enc ARG_UNUSED) +{ + if (s <= start) return (UChar* )s; + + if ((s - start) % 2 == 1) { + s--; + } + + if (UTF16_IS_SURROGATE_SECOND(*s) && s > start + 1) + s -= 2; + + return (UChar* )s; +} + +static int +utf16be_get_case_fold_codes_by_str(OnigCaseFoldType flag, + const OnigUChar* p, const OnigUChar* end, + OnigCaseFoldCodeItem items[], + OnigEncoding enc) +{ + return onigenc_unicode_get_case_fold_codes_by_str(enc, + flag, p, end, items); +} + +OnigEncodingDefine(utf_16be, UTF_16BE) = { + utf16be_mbc_enc_len, + "UTF-16BE", /* name */ + 4, /* max byte length */ + 2, /* min byte length */ + utf16be_is_mbc_newline, + utf16be_mbc_to_code, + utf16be_code_to_mbclen, + utf16be_code_to_mbc, + utf16be_mbc_case_fold, + onigenc_unicode_apply_all_case_fold, + utf16be_get_case_fold_codes_by_str, + onigenc_unicode_property_name_to_ctype, + onigenc_unicode_is_code_ctype, + onigenc_utf16_32_get_ctype_code_range, + utf16be_left_adjust_char_head, + onigenc_always_false_is_allowed_reverse_match, + 0, + ONIGENC_FLAG_UNICODE, +}; +ENC_ALIAS("UCS-2BE", "UTF-16BE") |