Annotation of embedaddon/php/ext/mbstring/oniguruma/enc/utf32_be.c, revision 1.1.1.1
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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