/**********************************************************************
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utf32_be.c - Oniguruma (regular expression library)
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**********************************************************************/
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/*-
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* Copyright (c) 2002-2019 K.Kosako
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "regenc.h"
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static int
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utf32be_mbc_enc_len(const UChar* p ARG_UNUSED)
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{
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return 4;
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}
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static int
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is_valid_mbc_string(const UChar* s, const UChar* end)
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{
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return onigenc_length_check_is_valid_mbc_string(ONIG_ENCODING_UTF32_BE, s, end);
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}
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static int
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utf32be_is_mbc_newline(const UChar* p, const UChar* end)
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{
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if (p + 3 < end) {
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if (*(p+3) == NEWLINE_CODE && *(p+2) == 0 && *(p+1) == 0 && *p == 0)
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return 1;
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#ifdef USE_UNICODE_ALL_LINE_TERMINATORS
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if ((
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#ifndef USE_CRNL_AS_LINE_TERMINATOR
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*(p+3) == 0x0d ||
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#endif
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*(p+3) == 0x85)
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&& *(p+2) == 0 && *(p+1) == 0 && *p == 0x00)
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return 1;
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if (*(p+2) == 0x20 && (*(p+3) == 0x29 || *(p+3) == 0x28)
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&& *(p+1) == 0 && *p == 0)
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return 1;
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#endif
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}
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return 0;
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}
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static OnigCodePoint
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utf32be_mbc_to_code(const UChar* p, const UChar* end ARG_UNUSED)
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{
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return (OnigCodePoint )(((p[0] * 256 + p[1]) * 256 + p[2]) * 256 + p[3]);
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}
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static int
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utf32be_code_to_mbclen(OnigCodePoint code ARG_UNUSED)
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{
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return 4;
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}
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static int
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utf32be_code_to_mbc(OnigCodePoint code, UChar *buf)
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{
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UChar* p = buf;
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*p++ = (UChar )((code & 0xff000000) >>24);
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*p++ = (UChar )((code & 0xff0000) >>16);
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*p++ = (UChar )((code & 0xff00) >> 8);
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*p++ = (UChar ) (code & 0xff);
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return 4;
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}
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static int
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utf32be_mbc_case_fold(OnigCaseFoldType flag,
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const UChar** pp, const UChar* end, UChar* fold)
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{
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const UChar* p = *pp;
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if (ONIGENC_IS_ASCII_CODE(*(p+3)) && *(p+2) == 0 && *(p+1) == 0 && *p == 0) {
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*fold++ = 0;
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*fold++ = 0;
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#ifdef USE_UNICODE_CASE_FOLD_TURKISH_AZERI
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if ((flag & ONIGENC_CASE_FOLD_TURKISH_AZERI) != 0) {
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if (*(p+3) == 0x49) {
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*fold++ = 0x01;
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*fold = 0x31;
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(*pp) += 4;
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return 4;
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}
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}
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#endif
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*fold++ = 0;
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*fold = ONIGENC_ASCII_CODE_TO_LOWER_CASE(*(p+3));
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*pp += 4;
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return 4;
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}
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else
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return onigenc_unicode_mbc_case_fold(ONIG_ENCODING_UTF32_BE, flag, pp, end,
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fold);
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}
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static UChar*
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utf32be_left_adjust_char_head(const UChar* start, const UChar* s)
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{
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int rem;
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if (s <= start) return (UChar* )s;
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rem = (s - start) % 4;
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return (UChar* )(s - rem);
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}
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static int
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utf32be_get_case_fold_codes_by_str(OnigCaseFoldType flag,
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const OnigUChar* p, const OnigUChar* end, OnigCaseFoldCodeItem items[])
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{
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return onigenc_unicode_get_case_fold_codes_by_str(ONIG_ENCODING_UTF32_BE,
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flag, p, end, items);
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}
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OnigEncodingType OnigEncodingUTF32_BE = {
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utf32be_mbc_enc_len,
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"UTF-32BE", /* name */
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4, /* max enc length */
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4, /* min enc length */
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utf32be_is_mbc_newline,
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utf32be_mbc_to_code,
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utf32be_code_to_mbclen,
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utf32be_code_to_mbc,
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utf32be_mbc_case_fold,
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onigenc_unicode_apply_all_case_fold,
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utf32be_get_case_fold_codes_by_str,
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onigenc_unicode_property_name_to_ctype,
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onigenc_unicode_is_code_ctype,
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onigenc_utf16_32_get_ctype_code_range,
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utf32be_left_adjust_char_head,
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onigenc_always_false_is_allowed_reverse_match,
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NULL, /* init */
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NULL, /* is_initialized */
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is_valid_mbc_string,
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ENC_FLAG_UNICODE|ENC_FLAG_SKIP_OFFSET_4,
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0, 0
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};
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