Annotation of embedaddon/php/ext/mbstring/oniguruma/enc/utf32_be.c, revision 1.1
1.1 ! misho 1: /**********************************************************************
! 2: utf32_be.c - Oniguruma (regular expression library)
! 3: **********************************************************************/
! 4: /*-
! 5: * Copyright (c) 2002-2006 K.Kosako <sndgk393 AT ybb DOT ne DOT jp>
! 6: * All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: *
! 17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
! 18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 20: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
! 21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 27: * SUCH DAMAGE.
! 28: */
! 29:
! 30: #include "regenc.h"
! 31:
! 32: static int
! 33: utf32be_mbc_enc_len(const UChar* p)
! 34: {
! 35: return 4;
! 36: }
! 37:
! 38: static int
! 39: utf32be_is_mbc_newline(const UChar* p, const UChar* end)
! 40: {
! 41: if (p + 3 < end) {
! 42: if (*(p+3) == 0x0a && *(p+2) == 0 && *(p+1) == 0 && *p == 0)
! 43: return 1;
! 44: #ifdef USE_UNICODE_ALL_LINE_TERMINATORS
! 45: if ((*(p+3) == 0x0d || *(p+3) == 0x85)
! 46: && *(p+2) == 0 && *(p+1) == 0 && *p == 0x00)
! 47: return 1;
! 48: if (*(p+2) == 0x20 && (*(p+3) == 0x29 || *(p+3) == 0x28)
! 49: && *(p+1) == 0 && *p == 0)
! 50: return 1;
! 51: #endif
! 52: }
! 53: return 0;
! 54: }
! 55:
! 56: static OnigCodePoint
! 57: utf32be_mbc_to_code(const UChar* p, const UChar* end)
! 58: {
! 59: return (OnigCodePoint )(((p[0] * 256 + p[1]) * 256 + p[2]) * 256 + p[3]);
! 60: }
! 61:
! 62: static int
! 63: utf32be_code_to_mbclen(OnigCodePoint code)
! 64: {
! 65: return 4;
! 66: }
! 67:
! 68: static int
! 69: utf32be_code_to_mbc(OnigCodePoint code, UChar *buf)
! 70: {
! 71: UChar* p = buf;
! 72:
! 73: *p++ = (UChar )((code & 0xff000000) >>24);
! 74: *p++ = (UChar )((code & 0xff0000) >>16);
! 75: *p++ = (UChar )((code & 0xff00) >> 8);
! 76: *p++ = (UChar ) (code & 0xff);
! 77: return 4;
! 78: }
! 79:
! 80: static int
! 81: utf32be_mbc_to_normalize(OnigAmbigType flag, const UChar** pp, const UChar* end,
! 82: UChar* lower)
! 83: {
! 84: const UChar* p = *pp;
! 85:
! 86: if (*(p+2) == 0 && *(p+1) == 0 && *p == 0) {
! 87: p += 3;
! 88: *lower++ = '\0';
! 89: *lower++ = '\0';
! 90: *lower++ = '\0';
! 91: if (((flag & ONIGENC_AMBIGUOUS_MATCH_ASCII_CASE) != 0 &&
! 92: ONIGENC_IS_MBC_ASCII(p)) ||
! 93: ((flag & ONIGENC_AMBIGUOUS_MATCH_NONASCII_CASE) != 0 &&
! 94: !ONIGENC_IS_MBC_ASCII(p))) {
! 95: *lower = ONIGENC_ISO_8859_1_TO_LOWER_CASE(*p);
! 96: }
! 97: else {
! 98: *lower = *p;
! 99: }
! 100:
! 101: (*pp) += 4;
! 102: return 4; /* return byte length of converted char to lower */
! 103: }
! 104: else {
! 105: int len = 4;
! 106: if (lower != p) {
! 107: int i;
! 108: for (i = 0; i < len; i++) {
! 109: *lower++ = *p++;
! 110: }
! 111: }
! 112: (*pp) += len;
! 113: return len; /* return byte length of converted char to lower */
! 114: }
! 115: }
! 116:
! 117: static int
! 118: utf32be_is_mbc_ambiguous(OnigAmbigType flag, const UChar** pp, const UChar* end)
! 119: {
! 120: const UChar* p = *pp;
! 121:
! 122: (*pp) += 4;
! 123:
! 124: if (*(p+2) == 0 && *(p+1) == 0 && *p == 0) {
! 125: int c, v;
! 126:
! 127: p += 3;
! 128: if (((flag & ONIGENC_AMBIGUOUS_MATCH_ASCII_CASE) != 0 &&
! 129: ONIGENC_IS_MBC_ASCII(p)) ||
! 130: ((flag & ONIGENC_AMBIGUOUS_MATCH_NONASCII_CASE) != 0 &&
! 131: !ONIGENC_IS_MBC_ASCII(p))) {
! 132: c = *p;
! 133: v = ONIGENC_IS_UNICODE_ISO_8859_1_CTYPE(c,
! 134: (ONIGENC_CTYPE_UPPER | ONIGENC_CTYPE_LOWER));
! 135: if ((v | ONIGENC_CTYPE_LOWER) != 0) {
! 136: /* 0xaa, 0xb5, 0xba are lower case letter, but can't convert. */
! 137: if (c >= 0xaa && c <= 0xba)
! 138: return FALSE;
! 139: else
! 140: return TRUE;
! 141: }
! 142: return (v != 0 ? TRUE : FALSE);
! 143: }
! 144: }
! 145:
! 146: return FALSE;
! 147: }
! 148:
! 149: static UChar*
! 150: utf32be_left_adjust_char_head(const UChar* start, const UChar* s)
! 151: {
! 152: int rem;
! 153:
! 154: if (s <= start) return (UChar* )s;
! 155:
! 156: rem = (s - start) % 4;
! 157: return (UChar* )(s - rem);
! 158: }
! 159:
! 160: OnigEncodingType OnigEncodingUTF32_BE = {
! 161: utf32be_mbc_enc_len,
! 162: "UTF-32BE", /* name */
! 163: 4, /* max byte length */
! 164: 4, /* min byte length */
! 165: (ONIGENC_AMBIGUOUS_MATCH_ASCII_CASE |
! 166: ONIGENC_AMBIGUOUS_MATCH_NONASCII_CASE ),
! 167: {
! 168: (OnigCodePoint )'\\' /* esc */
! 169: , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* anychar '.' */
! 170: , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* anytime '*' */
! 171: , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* zero or one time '?' */
! 172: , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* one or more time '+' */
! 173: , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* anychar anytime */
! 174: },
! 175: utf32be_is_mbc_newline,
! 176: utf32be_mbc_to_code,
! 177: utf32be_code_to_mbclen,
! 178: utf32be_code_to_mbc,
! 179: utf32be_mbc_to_normalize,
! 180: utf32be_is_mbc_ambiguous,
! 181: onigenc_iso_8859_1_get_all_pair_ambig_codes,
! 182: onigenc_ess_tsett_get_all_comp_ambig_codes,
! 183: onigenc_unicode_is_code_ctype,
! 184: onigenc_unicode_get_ctype_code_range,
! 185: utf32be_left_adjust_char_head,
! 186: onigenc_always_false_is_allowed_reverse_match
! 187: };
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