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|
/**********************************************************************
utf8.c - Oniguruma (regular expression library)
**********************************************************************/
/*-
* Copyright (c) 2002-2007 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"
#define USE_INVALID_CODE_SCHEME
#ifdef USE_INVALID_CODE_SCHEME
/* virtual codepoint values for invalid encoding byte 0xfe and 0xff */
#define INVALID_CODE_FE 0xfffffffe
#define INVALID_CODE_FF 0xffffffff
#define VALID_CODE_LIMIT 0x7fffffff
#endif
#define utf8_islead(c) ((UChar )((c) & 0xc0) != 0x80)
static const int EncLen_UTF8[] = {
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
};
typedef enum {
FAILURE = -2,
ACCEPT,
S0, S1, S2, S3,
S4, S5, S6, S7
} state_t;
#define A ACCEPT
#define F FAILURE
static const signed char trans[][0x100] = {
{ /* S0 0 1 2 3 4 5 6 7 8 9 a b c d e f */
/* 0 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
/* 1 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
/* 2 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
/* 3 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
/* 4 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
/* 5 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
/* 6 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
/* 7 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
/* 8 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 9 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* a */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* b */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* c */ F, F, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
/* d */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
/* e */ 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 3, 3,
/* f */ 5, 6, 6, 6, 7, F, F, F, F, F, F, F, F, F, F, F
},
{ /* S1 0 1 2 3 4 5 6 7 8 9 a b c d e f */
/* 0 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 1 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 2 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 3 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 4 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 5 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 6 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 7 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 8 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
/* 9 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
/* a */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
/* b */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
/* c */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* d */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* e */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* f */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F
},
{ /* S2 0 1 2 3 4 5 6 7 8 9 a b c d e f */
/* 0 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 1 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 2 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 3 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 4 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 5 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 6 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 7 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 8 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 9 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* a */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
/* b */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
/* c */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* d */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* e */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* f */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F
},
{ /* S3 0 1 2 3 4 5 6 7 8 9 a b c d e f */
/* 0 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 1 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 2 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 3 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 4 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 5 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 6 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 7 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 8 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
/* 9 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
/* a */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
/* b */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
/* c */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* d */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* e */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* f */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F
},
{ /* S4 0 1 2 3 4 5 6 7 8 9 a b c d e f */
/* 0 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 1 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 2 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 3 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 4 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 5 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 6 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 7 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 8 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
/* 9 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
/* a */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* b */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* c */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* d */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* e */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* f */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F
},
{ /* S5 0 1 2 3 4 5 6 7 8 9 a b c d e f */
/* 0 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 1 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 2 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 3 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 4 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 5 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 6 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 7 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 8 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 9 */ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
/* a */ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
/* b */ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
/* c */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* d */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* e */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* f */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F
},
{ /* S6 0 1 2 3 4 5 6 7 8 9 a b c d e f */
/* 0 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 1 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 2 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 3 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 4 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 5 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 6 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 7 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 8 */ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
/* 9 */ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
/* a */ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
/* b */ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
/* c */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* d */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* e */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* f */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F
},
{ /* S7 0 1 2 3 4 5 6 7 8 9 a b c d e f */
/* 0 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 1 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 2 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 3 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 4 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 5 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 6 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 7 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 8 */ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
/* 9 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* a */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* b */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* c */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* d */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* e */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* f */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F
},
};
#undef A
#undef F
static int
utf8_mbc_enc_len(const UChar* p, const UChar* e, OnigEncoding enc)
{
int firstbyte = *p++;
state_t s;
s = trans[0][firstbyte];
if (s < 0) return s == ACCEPT ? ONIGENC_CONSTRUCT_MBCLEN_CHARFOUND(1) :
ONIGENC_CONSTRUCT_MBCLEN_INVALID();
if (p == e) return ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE(EncLen_UTF8[firstbyte]-1);
s = trans[s][*p++];
if (s < 0) return s == ACCEPT ? ONIGENC_CONSTRUCT_MBCLEN_CHARFOUND(2) :
ONIGENC_CONSTRUCT_MBCLEN_INVALID();
if (p == e) return ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE(EncLen_UTF8[firstbyte]-2);
s = trans[s][*p++];
if (s < 0) return s == ACCEPT ? ONIGENC_CONSTRUCT_MBCLEN_CHARFOUND(3) :
ONIGENC_CONSTRUCT_MBCLEN_INVALID();
if (p == e) return ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE(EncLen_UTF8[firstbyte]-3);
s = trans[s][*p++];
return s == ACCEPT ? ONIGENC_CONSTRUCT_MBCLEN_CHARFOUND(4) :
ONIGENC_CONSTRUCT_MBCLEN_INVALID();
}
static int
utf8_is_mbc_newline(const UChar* p, const UChar* end, OnigEncoding enc)
{
if (p < end) {
if (*p == 0x0a) return 1;
#ifdef USE_UNICODE_ALL_LINE_TERMINATORS
#ifndef USE_CRNL_AS_LINE_TERMINATOR
if (*p == 0x0d) return 1;
#endif
if (p + 1 < end) {
if (*(p+1) == 0x85 && *p == 0xc2) /* U+0085 */
return 1;
if (p + 2 < end) {
if ((*(p+2) == 0xa8 || *(p+2) == 0xa9)
&& *(p+1) == 0x80 && *p == 0xe2) /* U+2028, U+2029 */
return 1;
}
}
#endif
}
return 0;
}
static OnigCodePoint
utf8_mbc_to_code(const UChar* p, const UChar* end, OnigEncoding enc)
{
int c, len;
OnigCodePoint n;
len = enc_len(ONIG_ENCODING_UTF8, p, end);
c = *p++;
if (len > 1) {
len--;
n = c & ((1 << (6 - len)) - 1);
while (len--) {
c = *p++;
n = (n << 6) | (c & ((1 << 6) - 1));
}
return n;
}
else {
#ifdef USE_INVALID_CODE_SCHEME
if (c > 0xfd) {
return ((c == 0xfe) ? INVALID_CODE_FE : INVALID_CODE_FF);
}
#endif
return (OnigCodePoint )c;
}
}
static int
utf8_code_to_mbclen(OnigCodePoint code, OnigEncoding enc)
{
if ((code & 0xffffff80) == 0) return 1;
else if ((code & 0xfffff800) == 0) return 2;
else if ((code & 0xffff0000) == 0) return 3;
else if ((code & 0xffe00000) == 0) return 4;
else if ((code & 0xfc000000) == 0) return 5;
else if ((code & 0x80000000) == 0) return 6;
#ifdef USE_INVALID_CODE_SCHEME
else if (code == INVALID_CODE_FE) return 1;
else if (code == INVALID_CODE_FF) return 1;
#endif
else
return ONIGENC_ERR_TOO_BIG_WIDE_CHAR_VALUE;
}
#if 0
static int
utf8_code_to_mbc_first(OnigCodePoint code)
{
if ((code & 0xffffff80) == 0)
return code;
else {
if ((code & 0xfffff800) == 0)
return ((code>>6)& 0x1f) | 0xc0;
else if ((code & 0xffff0000) == 0)
return ((code>>12) & 0x0f) | 0xe0;
else if ((code & 0xffe00000) == 0)
return ((code>>18) & 0x07) | 0xf0;
else if ((code & 0xfc000000) == 0)
return ((code>>24) & 0x03) | 0xf8;
else if ((code & 0x80000000) == 0)
return ((code>>30) & 0x01) | 0xfc;
else {
return ONIGENC_ERR_TOO_BIG_WIDE_CHAR_VALUE;
}
}
}
#endif
static int
utf8_code_to_mbc(OnigCodePoint code, UChar *buf, OnigEncoding enc)
{
#define UTF8_TRAILS(code, shift) (UChar )((((code) >> (shift)) & 0x3f) | 0x80)
#define UTF8_TRAIL0(code) (UChar )(((code) & 0x3f) | 0x80)
if ((code & 0xffffff80) == 0) {
*buf = (UChar )code;
return 1;
}
else {
UChar *p = buf;
if ((code & 0xfffff800) == 0) {
*p++ = (UChar )(((code>>6)& 0x1f) | 0xc0);
}
else if ((code & 0xffff0000) == 0) {
*p++ = (UChar )(((code>>12) & 0x0f) | 0xe0);
*p++ = UTF8_TRAILS(code, 6);
}
else if ((code & 0xffe00000) == 0) {
*p++ = (UChar )(((code>>18) & 0x07) | 0xf0);
*p++ = UTF8_TRAILS(code, 12);
*p++ = UTF8_TRAILS(code, 6);
}
else if ((code & 0xfc000000) == 0) {
*p++ = (UChar )(((code>>24) & 0x03) | 0xf8);
*p++ = UTF8_TRAILS(code, 18);
*p++ = UTF8_TRAILS(code, 12);
*p++ = UTF8_TRAILS(code, 6);
}
else if ((code & 0x80000000) == 0) {
*p++ = (UChar )(((code>>30) & 0x01) | 0xfc);
*p++ = UTF8_TRAILS(code, 24);
*p++ = UTF8_TRAILS(code, 18);
*p++ = UTF8_TRAILS(code, 12);
*p++ = UTF8_TRAILS(code, 6);
}
#ifdef USE_INVALID_CODE_SCHEME
else if (code == INVALID_CODE_FE) {
*p = 0xfe;
return 1;
}
else if (code == INVALID_CODE_FF) {
*p = 0xff;
return 1;
}
#endif
else {
return ONIGENC_ERR_TOO_BIG_WIDE_CHAR_VALUE;
}
*p++ = UTF8_TRAIL0(code);
return p - buf;
}
}
static int
utf8_mbc_case_fold(OnigCaseFoldType flag, const UChar** pp,
const UChar* end, UChar* fold, OnigEncoding enc)
{
const UChar* p = *pp;
if (ONIGENC_IS_MBC_ASCII(p)) {
#ifdef USE_UNICODE_CASE_FOLD_TURKISH_AZERI
if ((flag & ONIGENC_CASE_FOLD_TURKISH_AZERI) != 0) {
if (*p == 0x49) {
*fold++ = 0xc4;
*fold = 0xb1;
(*pp)++;
return 2;
}
}
#endif
*fold = ONIGENC_ASCII_CODE_TO_LOWER_CASE(*p);
(*pp)++;
return 1; /* return byte length of converted char to lower */
}
else {
return onigenc_unicode_mbc_case_fold(ONIG_ENCODING_UTF8, flag,
pp, end, fold);
}
}
#if 0
static int
utf8_is_mbc_ambiguous(OnigCaseFoldType flag, const UChar** pp, const UChar* end)
{
const UChar* p = *pp;
if (ONIGENC_IS_MBC_ASCII(p)) {
(*pp)++;
return ONIGENC_IS_ASCII_CODE_CASE_AMBIG(*p);
}
else {
(*pp) += enc_len(ONIG_ENCODING_UTF8, p);
if (*p == 0xc3) {
int c = *(p + 1);
if (c >= 0x80) {
if (c <= (UChar )0x9e) { /* upper */
if (c == (UChar )0x97) return FALSE;
return TRUE;
}
else if (c >= (UChar )0xa0 && c <= (UChar )0xbe) { /* lower */
if (c == (UChar )'\267') return FALSE;
return TRUE;
}
else if (c == (UChar )0x9f &&
(flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
return TRUE;
}
}
}
}
return FALSE;
}
#endif
static int
utf8_get_ctype_code_range(int ctype, OnigCodePoint *sb_out,
const OnigCodePoint* ranges[], OnigEncoding enc)
{
*sb_out = 0x80;
return onigenc_unicode_ctype_code_range(ctype, ranges);
}
static UChar*
utf8_left_adjust_char_head(const UChar* start, const UChar* s, OnigEncoding enc)
{
const UChar *p;
if (s <= start) return (UChar* )s;
p = s;
while (!utf8_islead(*p) && p > start) p--;
return (UChar* )p;
}
static int
utf8_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(ONIG_ENCODING_UTF8,
flag, p, end, items);
}
OnigEncodingType OnigEncodingUTF8 = {
utf8_mbc_enc_len,
"UTF-8", /* name */
6, /* max byte length */
1, /* min byte length */
utf8_is_mbc_newline,
utf8_mbc_to_code,
utf8_code_to_mbclen,
utf8_code_to_mbc,
utf8_mbc_case_fold,
onigenc_unicode_apply_all_case_fold,
utf8_get_case_fold_codes_by_str,
onigenc_unicode_property_name_to_ctype,
onigenc_unicode_is_code_ctype,
utf8_get_ctype_code_range,
utf8_left_adjust_char_head,
onigenc_always_true_is_allowed_reverse_match
};
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