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ruby--ruby/enc/unicode.c
naruse 2873edeafb Merge Onigmo 6.0.0 
* https://github.com/k-takata/Onigmo/blob/Onigmo-6.0.0/HISTORY
* fix for ruby 2.4: https://github.com/k-takata/Onigmo/pull/78
* suppress warning: https://github.com/k-takata/Onigmo/pull/79
* include/ruby/oniguruma.h: include onigmo.h.
* template/encdb.h.tmpl: ignore duplicated definition of EUC-CN in
  enc/euc_kr.c. It is defined in enc/gb2313.c with CRuby macro.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57045 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2016-12-10 17:47:04 +00:00

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/**********************************************************************
unicode.c - Oniguruma (regular expression library)
**********************************************************************/
/*-
* Copyright (c) 2002-2013 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 "regint.h"
#define ONIGENC_IS_UNICODE_ISO_8859_1_CTYPE(code,ctype) \
((EncUNICODE_ISO_8859_1_CtypeTable[code] & CTYPE_TO_BIT(ctype)) != 0)
#if 0
#define ONIGENC_IS_UNICODE_ISO_8859_1_BIT_CTYPE(code,cbit) \
((EncUNICODE_ISO_8859_1_CtypeTable[code] & (cbit)) != 0)
#endif
static const unsigned short EncUNICODE_ISO_8859_1_CtypeTable[256] = {
0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
0x4008, 0x420c, 0x4209, 0x4208, 0x4208, 0x4208, 0x4008, 0x4008,
0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
0x4284, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0,
0x78b0, 0x78b0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
0x41a0, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x74a2,
0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2,
0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2,
0x74a2, 0x74a2, 0x74a2, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x51a0,
0x41a0, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x70e2,
0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2,
0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2,
0x70e2, 0x70e2, 0x70e2, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x4008,
0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0288, 0x0008, 0x0008,
0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008,
0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008,
0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008,
0x0284, 0x01a0, 0x00a0, 0x00a0, 0x00a0, 0x00a0, 0x00a0, 0x00a0,
0x00a0, 0x00a0, 0x30e2, 0x01a0, 0x00a0, 0x00a8, 0x00a0, 0x00a0,
0x00a0, 0x00a0, 0x10a0, 0x10a0, 0x00a0, 0x30e2, 0x00a0, 0x01a0,
0x00a0, 0x10a0, 0x30e2, 0x01a0, 0x10a0, 0x10a0, 0x10a0, 0x01a0,
0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x00a0,
0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x30e2,
0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x00a0,
0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2
};
typedef struct {
int n;
OnigCodePoint code[3];
} CodePointList3;
typedef struct {
OnigCodePoint from;
CodePointList3 to;
} CaseFold_11_Type;
typedef struct {
OnigCodePoint from;
CodePointList3 to;
} CaseUnfold_11_Type;
typedef struct {
int n;
OnigCodePoint code[2];
} CodePointList2;
typedef struct {
OnigCodePoint from[2];
CodePointList2 to;
} CaseUnfold_12_Type;
typedef struct {
OnigCodePoint from[3];
CodePointList2 to;
} CaseUnfold_13_Type;
static inline int
bits_of(const OnigCodePoint c, const int n)
{
return (c >> (2 - n) * 7) & 127;
}
static inline int
bits_at(const OnigCodePoint *c, const int n)
{
return bits_of(c[n / 3], n % 3);
}
static int
code1_equal(const OnigCodePoint x, const OnigCodePoint y)
{
if (x != y) return 0;
return 1;
}
static int
code2_equal(const OnigCodePoint *x, const OnigCodePoint *y)
{
if (x[0] != y[0]) return 0;
if (x[1] != y[1]) return 0;
return 1;
}
static int
code3_equal(const OnigCodePoint *x, const OnigCodePoint *y)
{
if (x[0] != y[0]) return 0;
if (x[1] != y[1]) return 0;
if (x[2] != y[2]) return 0;
return 1;
}
/* macros related to ONIGENC_CASE flags */
/* defined here because not used in other files */
#define ONIGENC_CASE_SPECIALS (ONIGENC_CASE_TITLECASE | ONIGENC_CASE_IS_TITLECASE | ONIGENC_CASE_UP_SPECIAL | ONIGENC_CASE_DOWN_SPECIAL)
/* macros for length in CaseMappingSpecials array in enc/unicode/casefold.h */
#define SpecialsLengthOffset 25 /* needs to be higher than the 22 bits used for Unicode codepoints */
#define SpecialsLengthExtract(n) ((n) >> SpecialsLengthOffset)
#define SpecialsCodepointExtract(n) ((n) & ((1 << SpecialsLengthOffset) - 1))
#define SpecialsLengthEncode(n) ((n) << SpecialsLengthOffset)
#define OnigSpecialIndexMask (((1 << OnigSpecialIndexWidth) - 1) << OnigSpecialIndexShift)
#define OnigSpecialIndexEncode(n) ((n) << OnigSpecialIndexShift)
#define OnigSpecialIndexDecode(n) (((n) & OnigSpecialIndexMask) >> OnigSpecialIndexShift)
/* macros to shorten "enc/unicode/casefold.h", undefined immediately after including the file */
#define U ONIGENC_CASE_UPCASE
#define D ONIGENC_CASE_DOWNCASE
#define F ONIGENC_CASE_FOLD
#define ST ONIGENC_CASE_TITLECASE
#define SU ONIGENC_CASE_UP_SPECIAL
#define SL ONIGENC_CASE_DOWN_SPECIAL
#define IT ONIGENC_CASE_IS_TITLECASE
#define I(n) OnigSpecialIndexEncode(n)
#define L(n) SpecialsLengthEncode(n)
#include "casefold.h"
#undef U
#undef D
#undef F
#undef ST
#undef SU
#undef SL
#undef IT
#undef I
#undef L
#include "name2ctype.h"
#define CODE_RANGES_NUM numberof(CodeRanges)
extern int
onigenc_unicode_is_code_ctype(OnigCodePoint code, unsigned int ctype, OnigEncoding enc ARG_UNUSED)
{
if (
#ifdef USE_UNICODE_PROPERTIES
ctype <= ONIGENC_MAX_STD_CTYPE &&
#endif
code < 256) {
return ONIGENC_IS_UNICODE_ISO_8859_1_CTYPE(code, ctype);
}
if (ctype >= CODE_RANGES_NUM) {
return ONIGERR_TYPE_BUG;
}
return onig_is_in_code_range((UChar* )CodeRanges[ctype], code);
}
extern int
onigenc_unicode_ctype_code_range(int ctype, const OnigCodePoint* ranges[])
{
if (ctype >= CODE_RANGES_NUM) {
return ONIGERR_TYPE_BUG;
}
*ranges = CodeRanges[ctype];
return 0;
}
extern int
onigenc_utf16_32_get_ctype_code_range(OnigCtype ctype, OnigCodePoint* sb_out,
const OnigCodePoint* ranges[],
OnigEncoding enc ARG_UNUSED)
{
*sb_out = 0x00;
return onigenc_unicode_ctype_code_range(ctype, ranges);
}
#define PROPERTY_NAME_MAX_SIZE (MAX_WORD_LENGTH + 1)
extern int
onigenc_unicode_property_name_to_ctype(OnigEncoding enc, const UChar* name, const UChar* end)
{
int len;
int ctype;
UChar buf[PROPERTY_NAME_MAX_SIZE];
const UChar *p;
OnigCodePoint code;
len = 0;
for (p = name; p < end; p += enclen(enc, p, end)) {
code = ONIGENC_MBC_TO_CODE(enc, p, end);
if (code == ' ' || code == '-' || code == '_')
continue;
if (code >= 0x80)
return ONIGERR_INVALID_CHAR_PROPERTY_NAME;
buf[len++] = ONIGENC_ASCII_CODE_TO_LOWER_CASE(code);
if (len >= PROPERTY_NAME_MAX_SIZE)
return ONIGERR_INVALID_CHAR_PROPERTY_NAME;
}
buf[len] = 0;
if ((ctype = uniname2ctype(buf, len)) < 0) {
return ONIGERR_INVALID_CHAR_PROPERTY_NAME;
}
return ctype;
}
#define onigenc_unicode_fold_lookup onigenc_unicode_CaseFold_11_lookup
#define onigenc_unicode_unfold1_lookup onigenc_unicode_CaseUnfold_11_lookup
#define onigenc_unicode_unfold2_lookup onigenc_unicode_CaseUnfold_12_lookup
#define onigenc_unicode_unfold3_lookup onigenc_unicode_CaseUnfold_13_lookup
enum {
I_WITH_DOT_ABOVE = 0x0130,
DOTLESS_i = 0x0131,
DOT_ABOVE = 0x0307
};
extern int
onigenc_unicode_mbc_case_fold(OnigEncoding enc,
OnigCaseFoldType flag ARG_UNUSED, const UChar** pp, const UChar* end,
UChar* fold)
{
const CodePointList3 *to;
OnigCodePoint code;
int i, len, rlen;
const UChar *p = *pp;
code = ONIGENC_MBC_TO_CODE(enc, p, end);
len = enclen(enc, p, end);
*pp += len;
#ifdef USE_UNICODE_CASE_FOLD_TURKISH_AZERI
if ((flag & ONIGENC_CASE_FOLD_TURKISH_AZERI) != 0) {
if (code == 'I') {
return ONIGENC_CODE_TO_MBC(enc, DOTLESS_i, fold);
}
else if (code == I_WITH_DOT_ABOVE) {
return ONIGENC_CODE_TO_MBC(enc, 'i', fold);
}
}
#endif
if ((to = onigenc_unicode_fold_lookup(code)) != 0) {
if (OnigCodePointCount(to->n) == 1) {
return ONIGENC_CODE_TO_MBC(enc, to->code[0], fold);
}
#if 0
/* NO NEEDS TO CHECK */
else if ((flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0)
#else
else
#endif
{
rlen = 0;
for (i = 0; i < OnigCodePointCount(to->n); i++) {
len = ONIGENC_CODE_TO_MBC(enc, to->code[i], fold);
fold += len;
rlen += len;
}
return rlen;
}
}
for (i = 0; i < len; i++) {
*fold++ = *p++;
}
return len;
}
extern int
onigenc_unicode_apply_all_case_fold(OnigCaseFoldType flag,
OnigApplyAllCaseFoldFunc f, void* arg,
OnigEncoding enc ARG_UNUSED)
{
const CaseUnfold_11_Type* p11;
OnigCodePoint code;
int i, j, k, r;
for (i = 0; i < numberof(CaseUnfold_11); i++) {
p11 = &CaseUnfold_11[i];
for (j = 0; j < OnigCodePointCount(p11->to.n); j++) {
code = p11->from;
r = (*f)(p11->to.code[j], &code, 1, arg);
if (r != 0) return r;
code = p11->to.code[j];
r = (*f)(p11->from, &code, 1, arg);
if (r != 0) return r;
for (k = 0; k < j; k++) {
r = (*f)(p11->to.code[j], (OnigCodePoint* )(&p11->to.code[k]), 1, arg);
if (r != 0) return r;
r = (*f)(p11->to.code[k], (OnigCodePoint* )(&p11->to.code[j]), 1, arg);
if (r != 0) return r;
}
}
}
#ifdef USE_UNICODE_CASE_FOLD_TURKISH_AZERI
if ((flag & ONIGENC_CASE_FOLD_TURKISH_AZERI) != 0) {
code = DOTLESS_i;
r = (*f)('I', &code, 1, arg);
if (r != 0) return r;
code = 'I';
r = (*f)(DOTLESS_i, &code, 1, arg);
if (r != 0) return r;
code = I_WITH_DOT_ABOVE;
r = (*f)('i', &code, 1, arg);
if (r != 0) return r;
code = 'i';
r = (*f)(I_WITH_DOT_ABOVE, &code, 1, arg);
if (r != 0) return r;
}
else {
#endif
for (i = 0; i < numberof(CaseUnfold_11_Locale); i++) {
p11 = &CaseUnfold_11_Locale[i];
for (j = 0; j < OnigCodePointCount(p11->to.n); j++) {
code = p11->from;
r = (*f)(p11->to.code[j], &code, 1, arg);
if (r != 0) return r;
code = p11->to.code[j];
r = (*f)(p11->from, &code, 1, arg);
if (r != 0) return r;
for (k = 0; k < j; k++) {
r = (*f)(p11->to.code[j], (OnigCodePoint* )(&p11->to.code[k]),
1, arg);
if (r != 0) return r;
r = (*f)(p11->to.code[k], (OnigCodePoint* )(&p11->to.code[j]),
1, arg);
if (r != 0) return r;
}
}
}
#ifdef USE_UNICODE_CASE_FOLD_TURKISH_AZERI
}
#endif
if ((flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
for (i = 0; i < numberof(CaseUnfold_12); i++) {
for (j = 0; j < OnigCodePointCount(CaseUnfold_12[i].to.n); j++) {
r = (*f)(CaseUnfold_12[i].to.code[j],
(OnigCodePoint* )CaseUnfold_12[i].from, 2, arg);
if (r != 0) return r;
for (k = 0; k < OnigCodePointCount(CaseUnfold_12[i].to.n); k++) {
if (k == j) continue;
r = (*f)(CaseUnfold_12[i].to.code[j],
(OnigCodePoint* )(&CaseUnfold_12[i].to.code[k]), 1, arg);
if (r != 0) return r;
}
}
}
#ifdef USE_UNICODE_CASE_FOLD_TURKISH_AZERI
if ((flag & ONIGENC_CASE_FOLD_TURKISH_AZERI) == 0) {
#endif
for (i = 0; i < numberof(CaseUnfold_12_Locale); i++) {
for (j = 0; j < OnigCodePointCount(CaseUnfold_12_Locale[i].to.n); j++) {
r = (*f)(CaseUnfold_12_Locale[i].to.code[j],
(OnigCodePoint* )CaseUnfold_12_Locale[i].from, 2, arg);
if (r != 0) return r;
for (k = 0; k < OnigCodePointCount(CaseUnfold_12_Locale[i].to.n); k++) {
if (k == j) continue;
r = (*f)(CaseUnfold_12_Locale[i].to.code[j],
(OnigCodePoint* )(&CaseUnfold_12_Locale[i].to.code[k]),
1, arg);
if (r != 0) return r;
}
}
}
#ifdef USE_UNICODE_CASE_FOLD_TURKISH_AZERI
}
#endif
for (i = 0; i < numberof(CaseUnfold_13); i++) {
for (j = 0; j < OnigCodePointCount(CaseUnfold_13[i].to.n); j++) {
r = (*f)(CaseUnfold_13[i].to.code[j],
(OnigCodePoint* )CaseUnfold_13[i].from, 3, arg);
if (r != 0) return r;
for (k = 0; k < OnigCodePointCount(CaseUnfold_13[i].to.n); k++) {
if (k == j) continue;
r = (*f)(CaseUnfold_13[i].to.code[j],
(OnigCodePoint* )(&CaseUnfold_13[i].to.code[k]), 1, arg);
if (r != 0) return r;
}
}
}
}
return 0;
}
#define CodePointListValidP(x) (OnigCodePointCount((x)->n) <= numberof((x)->code))
extern int
onigenc_unicode_get_case_fold_codes_by_str(OnigEncoding enc,
OnigCaseFoldType flag, const OnigUChar* p, const OnigUChar* end,
OnigCaseFoldCodeItem items[])
{
int n, i, j, k, len;
OnigCodePoint code, codes[3];
const CodePointList3 *to, *z3;
const CodePointList2 *z2;
n = 0;
code = ONIGENC_MBC_TO_CODE(enc, p, end);
len = enclen(enc, p, end);
#ifdef USE_UNICODE_CASE_FOLD_TURKISH_AZERI
if ((flag & ONIGENC_CASE_FOLD_TURKISH_AZERI) != 0) {
switch (code) {
case 'I':
items[0].byte_len = len;
items[0].code_len = 1;
items[0].code[0] = DOTLESS_i;
return 1;
case I_WITH_DOT_ABOVE:
items[0].byte_len = len;
items[0].code_len = 1;
items[0].code[0] = 'i';
return 1;
case DOTLESS_i:
items[0].byte_len = len;
items[0].code_len = 1;
items[0].code[0] = 'I';
return 1;
case 'i':
items[0].byte_len = len;
items[0].code_len = 1;
items[0].code[0] = I_WITH_DOT_ABOVE;
return 1;
}
}
#endif
if ((to = onigenc_unicode_fold_lookup(code)) != 0) {
if (OnigCodePointCount(to->n) == 1) {
OnigCodePoint orig_code = code;
items[0].byte_len = len;
items[0].code_len = 1;
items[0].code[0] = to->code[0];
n++;
code = to->code[0];
if ((to = onigenc_unicode_unfold1_lookup(code)) != 0 &&
CodePointListValidP(to)) {
for (i = 0; i < OnigCodePointCount(to->n); i++) {
if (to->code[i] != orig_code) {
items[n].byte_len = len;
items[n].code_len = 1;
items[n].code[0] = to->code[i];
n++;
}
}
}
}
else if ((flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
OnigCodePoint cs[3][4];
int fn, ncs[3];
for (fn = 0; fn < OnigCodePointCount(to->n); fn++) {
cs[fn][0] = to->code[fn];
if ((z3 = onigenc_unicode_unfold1_lookup(cs[fn][0])) != 0) {
for (i = 0; i < OnigCodePointCount(z3->n); i++) {
cs[fn][i+1] = z3->code[i];
}
ncs[fn] = OnigCodePointCount(z3->n) + 1;
}
else
ncs[fn] = 1;
}
if (fn == 2) {
for (i = 0; i < ncs[0]; i++) {
for (j = 0; j < ncs[1]; j++) {
items[n].byte_len = len;
items[n].code_len = 2;
items[n].code[0] = cs[0][i];
items[n].code[1] = cs[1][j];
n++;
}
}
if ((z2 = onigenc_unicode_unfold2_lookup(to->code)) != 0 &&
CodePointListValidP(z2)) {
for (i = 0; i < OnigCodePointCount(z2->n); i++) {
if (z2->code[i] == code) continue;
items[n].byte_len = len;
items[n].code_len = 1;
items[n].code[0] = z2->code[i];
n++;
}
}
}
else {
for (i = 0; i < ncs[0]; i++) {
for (j = 0; j < ncs[1]; j++) {
for (k = 0; k < ncs[2]; k++) {
items[n].byte_len = len;
items[n].code_len = 3;
items[n].code[0] = cs[0][i];
items[n].code[1] = cs[1][j];
items[n].code[2] = cs[2][k];
n++;
}
}
}
if ((z2 = onigenc_unicode_unfold3_lookup(to->code)) != 0 &&
CodePointListValidP(z2)) {
for (i = 0; i < OnigCodePointCount(z2->n); i++) {
if (z2->code[i] == code) continue;
items[n].byte_len = len;
items[n].code_len = 1;
items[n].code[0] = z2->code[i];
n++;
}
}
}
/* multi char folded code is not head of another folded multi char */
flag = 0; /* DISABLE_CASE_FOLD_MULTI_CHAR(flag); */
}
}
else {
if ((to = onigenc_unicode_unfold1_lookup(code)) != 0 &&
CodePointListValidP(to)) {
for (i = 0; i < OnigCodePointCount(to->n); i++) {
items[n].byte_len = len;
items[n].code_len = 1;
items[n].code[0] = to->code[i];
n++;
}
}
}
if ((flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
p += len;
if (p < end) {
int clen;
codes[0] = code;
code = ONIGENC_MBC_TO_CODE(enc, p, end);
if ((to = onigenc_unicode_fold_lookup(code)) != 0
&& OnigCodePointCount(to->n) == 1) {
codes[1] = to->code[0];
}
else
codes[1] = code;
clen = enclen(enc, p, end);
len += clen;
if ((z2 = onigenc_unicode_unfold2_lookup(codes)) != 0 &&
CodePointListValidP(z2)) {
for (i = 0; i < OnigCodePointCount(z2->n); i++) {
items[n].byte_len = len;
items[n].code_len = 1;
items[n].code[0] = z2->code[i];
n++;
}
}
p += clen;
if (p < end) {
code = ONIGENC_MBC_TO_CODE(enc, p, end);
if ((to = onigenc_unicode_fold_lookup(code)) != 0
&& OnigCodePointCount(to->n) == 1) {
codes[2] = to->code[0];
}
else
codes[2] = code;
clen = enclen(enc, p, end);
len += clen;
if ((z2 = onigenc_unicode_unfold3_lookup(codes)) != 0 &&
CodePointListValidP(z2)) {
for (i = 0; i < OnigCodePointCount(z2->n); i++) {
items[n].byte_len = len;
items[n].code_len = 1;
items[n].code[0] = z2->code[i];
n++;
}
}
}
}
}
return n;
}
/* length in bytes for three characters in UTF-32; e.g. needed for ffi (U+FB03) */
#define CASE_MAPPING_SLACK 12
#define MODIFIED (flags |= ONIGENC_CASE_MODIFIED)
extern int
onigenc_unicode_case_map(OnigCaseFoldType* flagP,
const OnigUChar** pp, const OnigUChar* end,
OnigUChar* to, OnigUChar* to_end,
const struct OnigEncodingTypeST* enc)
{
OnigCodePoint code;
OnigUChar *to_start = to;
OnigCaseFoldType flags = *flagP;
int codepoint_length;
to_end -= CASE_MAPPING_SLACK;
/* copy flags ONIGENC_CASE_UPCASE and ONIGENC_CASE_DOWNCASE over to
* ONIGENC_CASE_UP_SPECIAL and ONIGENC_CASE_DOWN_SPECIAL */
flags |= (flags & (ONIGENC_CASE_UPCASE | ONIGENC_CASE_DOWNCASE)) << ONIGENC_CASE_SPECIAL_OFFSET;
while (*pp < end && to <= to_end) {
codepoint_length = ONIGENC_PRECISE_MBC_ENC_LEN(enc, *pp, end);
if (codepoint_length < 0)
return codepoint_length; /* encoding invalid */
code = ONIGENC_MBC_TO_CODE(enc, *pp, end);
*pp += codepoint_length;
if (code <= 'z') { /* ASCII comes first */
if (code >= 'a' && code <= 'z') {
if (flags & ONIGENC_CASE_UPCASE) {
MODIFIED;
if (flags & ONIGENC_CASE_FOLD_TURKISH_AZERI && code == 'i')
code = I_WITH_DOT_ABOVE;
else
code += 'A' - 'a';
}
}
else if (code >= 'A' && code <= 'Z') {
if (flags & (ONIGENC_CASE_DOWNCASE | ONIGENC_CASE_FOLD)) {
MODIFIED;
if (flags & ONIGENC_CASE_FOLD_TURKISH_AZERI && code == 'I')
code = DOTLESS_i;
else
code += 'a' - 'A';
}
}
}
else if (!(flags & ONIGENC_CASE_ASCII_ONLY) && code >= 0x00B5) { /* deal with non-ASCII; micron sign (U+00B5) is lowest affected */
const CodePointList3 *folded;
if (code == I_WITH_DOT_ABOVE) {
if (flags & (ONIGENC_CASE_DOWNCASE | ONIGENC_CASE_FOLD)) {
MODIFIED;
code = 'i';
if (!(flags & ONIGENC_CASE_FOLD_TURKISH_AZERI)) { /* make dot above explicit */
to += ONIGENC_CODE_TO_MBC(enc, code, to);
code = DOT_ABOVE;
}
}
}
else if (code == DOTLESS_i) { /* handle this manually, because it isn't involved in folding */
if (flags & ONIGENC_CASE_UPCASE) {
MODIFIED;
code = 'I';
}
}
else if ((folded = onigenc_unicode_fold_lookup(code)) != 0) { /* data about character found in CaseFold_11_Table */
if ((flags & ONIGENC_CASE_TITLECASE) /* Titlecase needed, */
&& (OnigCaseFoldFlags(folded->n) & ONIGENC_CASE_IS_TITLECASE)) { /* but already Titlecase */
/* already Titlecase, no changes needed */
}
else if (flags & OnigCaseFoldFlags(folded->n)) { /* needs and data availability match */
const OnigCodePoint *next;
int count;
MODIFIED;
if (flags & OnigCaseFoldFlags(folded->n) & ONIGENC_CASE_SPECIALS) { /* special */
const OnigCodePoint *SpecialsStart = CaseMappingSpecials + OnigSpecialIndexDecode(folded->n);
if (OnigCaseFoldFlags(folded->n) & ONIGENC_CASE_IS_TITLECASE) { /* swapCASE available */
if ((flags & (ONIGENC_CASE_UPCASE | ONIGENC_CASE_DOWNCASE))
== (ONIGENC_CASE_UPCASE | ONIGENC_CASE_DOWNCASE)) /* swapCASE needed */
goto SpecialsCopy;
else /* swapCASE not needed */
SpecialsStart += SpecialsLengthExtract(*SpecialsStart);
}
if (OnigCaseFoldFlags(folded->n) & ONIGENC_CASE_TITLECASE) { /* Titlecase available */
if (flags & ONIGENC_CASE_TITLECASE) /* Titlecase needed, but not yet Titlecase */
goto SpecialsCopy;
else /* Titlecase not needed */
SpecialsStart += SpecialsLengthExtract(*SpecialsStart);
}
if (OnigCaseFoldFlags(folded->n) & ONIGENC_CASE_DOWN_SPECIAL) {
if (!(flags & ONIGENC_CASE_DOWN_SPECIAL))
SpecialsStart += SpecialsLengthExtract(*SpecialsStart);
}
/* here, we know we use ONIGENC_CASE_UP_SPECIAL, and the position is right */
SpecialsCopy:
count = SpecialsLengthExtract(*SpecialsStart);
next = SpecialsStart;
code = SpecialsCodepointExtract(*next++);
}
else { /* no specials */
count = OnigCodePointCount(folded->n);
next = folded->code;
code = *next++;
}
if (count == 1)
;
else if (count == 2) {
to += ONIGENC_CODE_TO_MBC(enc, code, to);
code = *next;
}
else { /* count == 3 */
to += ONIGENC_CODE_TO_MBC(enc, code, to);
to += ONIGENC_CODE_TO_MBC(enc, *next++, to);
code = *next;
}
}
}
else if ((folded = onigenc_unicode_unfold1_lookup(code)) != 0 /* data about character found in CaseUnfold_11_Table */
&& flags & OnigCaseFoldFlags(folded->n)) { /* needs and data availability match */
MODIFIED;
code = folded->code[(flags & OnigCaseFoldFlags(folded->n) & ONIGENC_CASE_TITLECASE) ? 1 : 0];
}
}
to += ONIGENC_CODE_TO_MBC(enc, code, to);
/* switch from titlecase to lowercase for capitalize */
if (flags & ONIGENC_CASE_TITLECASE)
flags ^= (ONIGENC_CASE_UPCASE | ONIGENC_CASE_DOWNCASE | ONIGENC_CASE_TITLECASE |
ONIGENC_CASE_UP_SPECIAL | ONIGENC_CASE_DOWN_SPECIAL);
}
*flagP = flags;
return (int )(to - to_start);
}
#if 0
const char onigenc_unicode_version_string[] =
#ifdef ONIG_UNICODE_VERSION_STRING
ONIG_UNICODE_VERSION_STRING
#endif
"";
const int onigenc_unicode_version_number[3] = {
#ifdef ONIG_UNICODE_VERSION_MAJOR
ONIG_UNICODE_VERSION_MAJOR,
ONIG_UNICODE_VERSION_MINOR,
ONIG_UNICODE_VERSION_TEENY,
#else
0
#endif
};
#endif
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