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unicode.c
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unicode.c
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/**********************************************************************
unicode.c - Oniguruma (regular expression library)
**********************************************************************/
/*-
* Copyright (c) 2002-2019 K.Kosako
* 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"
struct PoolPropertyNameCtype {
short int name;
short int ctype;
};
#define ONIGENC_IS_UNICODE_ISO_8859_1_CTYPE(code,ctype) \
((EncUNICODE_ISO_8859_1_CtypeTable[code] & CTYPE_TO_BIT(ctype)) != 0)
static const unsigned short EncUNICODE_ISO_8859_1_CtypeTable[256] = {
0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
0x4008, 0x428c, 0x4289, 0x4288, 0x4288, 0x4288, 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
};
#include "st.h"
#include "unicode_fold_data.c"
extern int
onigenc_unicode_mbc_case_fold(OnigEncoding enc,
OnigCaseFoldType flag ARG_UNUSED, const UChar** pp, const UChar* end,
UChar* fold)
{
const struct ByUnfoldKey* buk;
OnigCodePoint code;
int i, len, rlen;
const UChar *p = *pp;
code = ONIGENC_MBC_TO_CODE(enc, p, end);
len = enclen(enc, p);
*pp += len;
#ifdef USE_UNICODE_CASE_FOLD_TURKISH_AZERI
if ((flag & ONIGENC_CASE_FOLD_TURKISH_AZERI) != 0) {
if (code == 0x0130) {
return ONIGENC_CODE_TO_MBC(enc, 0x0069, fold);
}
#if 0
if (code == 0x0049) {
return ONIGENC_CODE_TO_MBC(enc, 0x0131, fold);
}
#endif
}
#endif
buk = onigenc_unicode_unfold_key(code);
if (buk != 0) {
if (buk->fold_len == 1) {
return ONIGENC_CODE_TO_MBC(enc, *FOLDS1_FOLD(buk->index), fold);
}
else {
OnigCodePoint* addr;
FOLDS_FOLD_ADDR_BUK(buk, addr);
rlen = 0;
for (i = 0; i < buk->fold_len; i++) {
OnigCodePoint c = addr[i];
len = ONIGENC_CODE_TO_MBC(enc, c, fold);
fold += len;
rlen += len;
}
return rlen;
}
}
for (i = 0; i < len; i++) {
*fold++ = *p++;
}
return len;
}
static int
apply_case_fold1(int from, int to, OnigApplyAllCaseFoldFunc f, void* arg)
{
int i, j, k, n, r;
for (i = from; i < to; ) {
OnigCodePoint fold = *FOLDS1_FOLD(i);
n = FOLDS1_UNFOLDS_NUM(i);
for (j = 0; j < n; j++) {
OnigCodePoint unfold = FOLDS1_UNFOLDS(i)[j];
r = (*f)(fold, &unfold, 1, arg);
if (r != 0) return r;
r = (*f)(unfold, &fold, 1, arg);
if (r != 0) return r;
for (k = 0; k < j; k++) {
OnigCodePoint unfold2 = FOLDS1_UNFOLDS(i)[k];
r = (*f)(unfold, &unfold2, 1, arg);
if (r != 0) return r;
r = (*f)(unfold2, &unfold, 1, arg);
if (r != 0) return r;
}
}
i = FOLDS1_NEXT_INDEX(i);
}
return 0;
}
static int
apply_case_fold2(int from, int to, OnigApplyAllCaseFoldFunc f, void* arg)
{
int i, j, k, n, r;
for (i = from; i < to; ) {
OnigCodePoint* fold = FOLDS2_FOLD(i);
n = FOLDS2_UNFOLDS_NUM(i);
for (j = 0; j < n; j++) {
OnigCodePoint unfold = FOLDS2_UNFOLDS(i)[j];
r = (*f)(unfold, fold, 2, arg);
if (r != 0) return r;
for (k = 0; k < j; k++) {
OnigCodePoint unfold2 = FOLDS2_UNFOLDS(i)[k];
r = (*f)(unfold, &unfold2, 1, arg);
if (r != 0) return r;
r = (*f)(unfold2, &unfold, 1, arg);
if (r != 0) return r;
}
}
i = FOLDS2_NEXT_INDEX(i);
}
return 0;
}
static int
apply_case_fold3(int from, int to, OnigApplyAllCaseFoldFunc f, void* arg)
{
int i, j, k, n, r;
for (i = from; i < to; ) {
OnigCodePoint* fold = FOLDS3_FOLD(i);
n = FOLDS3_UNFOLDS_NUM(i);
for (j = 0; j < n; j++) {
OnigCodePoint unfold = FOLDS3_UNFOLDS(i)[j];
r = (*f)(unfold, fold, 3, arg);
if (r != 0) return r;
for (k = 0; k < j; k++) {
OnigCodePoint unfold2 = FOLDS3_UNFOLDS(i)[k];
r = (*f)(unfold, &unfold2, 1, arg);
if (r != 0) return r;
r = (*f)(unfold2, &unfold, 1, arg);
if (r != 0) return r;
}
}
i = FOLDS3_NEXT_INDEX(i);
}
return 0;
}
extern int
onigenc_unicode_apply_all_case_fold(OnigCaseFoldType flag,
OnigApplyAllCaseFoldFunc f, void* arg)
{
int r;
r = apply_case_fold1(0, FOLDS1_NORMAL_END_INDEX, f, arg);
if (r != 0) return r;
#ifdef USE_UNICODE_CASE_FOLD_TURKISH_AZERI
if ((flag & ONIGENC_CASE_FOLD_TURKISH_AZERI) != 0) {
code = 0x0131;
r = (*f)(0x0049, &code, 1, arg);
if (r != 0) return r;
code = 0x0049;
r = (*f)(0x0131, &code, 1, arg);
if (r != 0) return r;
code = 0x0130;
r = (*f)(0x0069, &code, 1, arg);
if (r != 0) return r;
code = 0x0069;
r = (*f)(0x0130, &code, 1, arg);
if (r != 0) return r;
}
else {
#endif
r = apply_case_fold1(FOLDS1_NORMAL_END_INDEX, FOLDS1_END_INDEX, f, arg);
if (r != 0) return r;
#ifdef USE_UNICODE_CASE_FOLD_TURKISH_AZERI
}
#endif
if ((flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) == 0)
return 0;
r = apply_case_fold2(0, FOLDS2_NORMAL_END_INDEX, f, arg);
if (r != 0) return r;
#ifdef USE_UNICODE_CASE_FOLD_TURKISH_AZERI
if ((flag & ONIGENC_CASE_FOLD_TURKISH_AZERI) == 0) {
#endif
r = apply_case_fold2(FOLDS2_NORMAL_END_INDEX, FOLDS2_END_INDEX, f, arg);
if (r != 0) return r;
#ifdef USE_UNICODE_CASE_FOLD_TURKISH_AZERI
}
#endif
r = apply_case_fold3(0, FOLDS3_NORMAL_END_INDEX, f, arg);
if (r != 0) return r;
return 0;
}
extern int
onigenc_unicode_get_case_fold_codes_by_str(OnigEncoding enc,
OnigCaseFoldType flag, const OnigUChar* p, const OnigUChar* end,
OnigCaseFoldCodeItem items[])
{
int n, m, i, j, k, len, lens[3];
int index;
int fn, ncs[3];
OnigCodePoint cs[3][4];
OnigCodePoint code, codes[3], orig_codes[3];
const struct ByUnfoldKey* buk1;
n = 0;
code = ONIGENC_MBC_TO_CODE(enc, p, end);
len = enclen(enc, p);
#ifdef USE_UNICODE_CASE_FOLD_TURKISH_AZERI
if ((flag & ONIGENC_CASE_FOLD_TURKISH_AZERI) != 0) {
if (code == 0x0049) {
items[0].byte_len = len;
items[0].code_len = 1;
items[0].code[0] = 0x0131;
return 1;
}
else if (code == 0x0130) {
items[0].byte_len = len;
items[0].code_len = 1;
items[0].code[0] = 0x0069;
return 1;
}
else if (code == 0x0131) {
items[0].byte_len = len;
items[0].code_len = 1;
items[0].code[0] = 0x0049;
return 1;
}
else if (code == 0x0069) {
items[0].byte_len = len;
items[0].code_len = 1;
items[0].code[0] = 0x0130;
return 1;
}
}
#endif
orig_codes[0] = code;
lens[0] = len;
p += len;
buk1 = onigenc_unicode_unfold_key(orig_codes[0]);
if (buk1 != 0 && buk1->fold_len == 1) {
codes[0] = *FOLDS1_FOLD(buk1->index);
}
else
codes[0] = orig_codes[0];
if ((flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) == 0)
goto fold1;
if (p < end) {
const struct ByUnfoldKey* buk;
code = ONIGENC_MBC_TO_CODE(enc, p, end);
orig_codes[1] = code;
len = enclen(enc, p);
lens[1] = lens[0] + len;
buk = onigenc_unicode_unfold_key(orig_codes[1]);
if (buk != 0 && buk->fold_len == 1) {
codes[1] = *FOLDS1_FOLD(buk->index);
}
else
codes[1] = orig_codes[1];
p += len;
if (p < end) {
code = ONIGENC_MBC_TO_CODE(enc, p, end);
orig_codes[2] = code;
len = enclen(enc, p);
lens[2] = lens[1] + len;
buk = onigenc_unicode_unfold_key(orig_codes[2]);
if (buk != 0 && buk->fold_len == 1) {
codes[2] = *FOLDS1_FOLD(buk->index);
}
else
codes[2] = orig_codes[2];
index = onigenc_unicode_fold3_key(codes);
if (index >= 0) {
m = FOLDS3_UNFOLDS_NUM(index);
for (i = 0; i < m; i++) {
items[n].byte_len = lens[2];
items[n].code_len = 1;
items[n].code[0] = FOLDS3_UNFOLDS(index)[i];
n++;
}
for (fn = 0; fn < 3; fn++) {
int sindex;
cs[fn][0] = FOLDS3_FOLD(index)[fn];
ncs[fn] = 1;
sindex = onigenc_unicode_fold1_key(&cs[fn][0]);
if (sindex >= 0) {
int m = FOLDS1_UNFOLDS_NUM(sindex);
for (i = 0; i < m; i++) {
cs[fn][i+1] = FOLDS1_UNFOLDS(sindex)[i];
}
ncs[fn] += m;
}
}
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 = lens[2];
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];
if (items[n].code[0] == orig_codes[0] &&
items[n].code[1] == orig_codes[1] &&
items[n].code[2] == orig_codes[2])
continue;
n++;
}
}
}
return n;
}
}
index = onigenc_unicode_fold2_key(codes);
if (index >= 0) {
m = FOLDS2_UNFOLDS_NUM(index);
for (i = 0; i < m; i++) {
items[n].byte_len = lens[1];
items[n].code_len = 1;
items[n].code[0] = FOLDS2_UNFOLDS(index)[i];
n++;
}
for (fn = 0; fn < 2; fn++) {
int sindex;
cs[fn][0] = FOLDS2_FOLD(index)[fn];
ncs[fn] = 1;
sindex = onigenc_unicode_fold1_key(&cs[fn][0]);
if (sindex >= 0) {
int m = FOLDS1_UNFOLDS_NUM(sindex);
for (i = 0; i < m; i++) {
cs[fn][i+1] = FOLDS1_UNFOLDS(sindex)[i];
}
ncs[fn] += m;
}
}
for (i = 0; i < ncs[0]; i++) {
for (j = 0; j < ncs[1]; j++) {
if (cs[0][i] == orig_codes[0] && cs[1][j] == orig_codes[1])
continue;
items[n].byte_len = lens[1];
items[n].code_len = 2;
items[n].code[0] = cs[0][i];
items[n].code[1] = cs[1][j];
n++;
}
}
return n;
}
}
fold1:
if (buk1 != 0) {
if (buk1->fold_len == 1) {
int un;
items[0].byte_len = lens[0];
items[0].code_len = 1;
items[0].code[0] = *FOLDS1_FOLD(buk1->index);
n++;
un = FOLDS1_UNFOLDS_NUM(buk1->index);
for (i = 0; i < un; i++) {
OnigCodePoint unfold = FOLDS1_UNFOLDS(buk1->index)[i];
if (unfold != orig_codes[0]) {
items[n].byte_len = lens[0];
items[n].code_len = 1;
items[n].code[0] = unfold;
n++;
}
}
}
else if ((flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
if (buk1->fold_len == 2) {
m = FOLDS2_UNFOLDS_NUM(buk1->index);
for (i = 0; i < m; i++) {
OnigCodePoint unfold = FOLDS2_UNFOLDS(buk1->index)[i];
if (unfold == orig_codes[0]) continue;
items[n].byte_len = lens[0];
items[n].code_len = 1;
items[n].code[0] = unfold;
n++;
}
for (fn = 0; fn < 2; fn++) {
int index;
cs[fn][0] = FOLDS2_FOLD(buk1->index)[fn];
ncs[fn] = 1;
index = onigenc_unicode_fold1_key(&cs[fn][0]);
if (index >= 0) {
int m = FOLDS1_UNFOLDS_NUM(index);
for (i = 0; i < m; i++) {
cs[fn][i+1] = FOLDS1_UNFOLDS(index)[i];
}
ncs[fn] += m;
}
}
for (i = 0; i < ncs[0]; i++) {
for (j = 0; j < ncs[1]; j++) {
items[n].byte_len = lens[0];
items[n].code_len = 2;
items[n].code[0] = cs[0][i];
items[n].code[1] = cs[1][j];
n++;
}
}
}
else { /* fold_len == 3 */
m = FOLDS3_UNFOLDS_NUM(buk1->index);
for (i = 0; i < m; i++) {
OnigCodePoint unfold = FOLDS3_UNFOLDS(buk1->index)[i];
if (unfold == orig_codes[0]) continue;
items[n].byte_len = lens[0];
items[n].code_len = 1;
items[n].code[0] = unfold;
n++;
}
for (fn = 0; fn < 3; fn++) {
int index;
cs[fn][0] = FOLDS3_FOLD(buk1->index)[fn];
ncs[fn] = 1;
index = onigenc_unicode_fold1_key(&cs[fn][0]);
if (index >= 0) {
int m = FOLDS1_UNFOLDS_NUM(index);
for (i = 0; i < m; i++) {
cs[fn][i+1] = FOLDS1_UNFOLDS(index)[i];
}
ncs[fn] += m;
}
}
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 = lens[0];
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++;
}
}
}
}
}
}
else {
int index = onigenc_unicode_fold1_key(orig_codes);
if (index >= 0) {
int m = FOLDS1_UNFOLDS_NUM(index);
for (i = 0; i < m; i++) {
items[n].byte_len = lens[0];
items[n].code_len = 1;
items[n].code[0] = FOLDS1_UNFOLDS(index)[i];
n++;
}
}
}
return n;
}
#ifdef USE_UNICODE_PROPERTIES
#include "unicode_property_data.c"
#else
#include "unicode_property_data_posix.c"
#endif
#ifdef USE_UNICODE_WORD_BREAK
enum WB_TYPE {
WB_Any = 0,
WB_ALetter,
WB_CR,
WB_Double_Quote,
WB_Extend,
WB_ExtendNumLet,
WB_Format,
WB_Hebrew_Letter,
WB_Katakana,
WB_LF,
WB_MidLetter,
WB_MidNum,
WB_MidNumLet,
WB_Newline,
WB_Numeric,
WB_Regional_Indicator,
WB_Single_Quote,
WB_WSegSpace,
WB_ZWJ,
};
typedef struct {
OnigCodePoint start;
OnigCodePoint end;
enum WB_TYPE type;
} WB_RANGE_TYPE;
#include "unicode_wb_data.c"
static enum WB_TYPE
wb_get_type(OnigCodePoint code)
{
OnigCodePoint low, high, x;
enum WB_TYPE type;
for (low = 0, high = (OnigCodePoint )WB_RANGE_NUM; low < high; ) {
x = (low + high) >> 1;
if (code > WB_RANGES[x].end)
low = x + 1;
else
high = x;
}
type = (low < (OnigCodePoint )WB_RANGE_NUM &&
code >= WB_RANGES[low].start) ?
WB_RANGES[low].type : WB_Any;
return type;
}
#define IS_WB_IGNORE_TAIL(t) ((t) == WB_Extend || (t) == WB_Format || (t) == WB_ZWJ)
#define IS_WB_AHLetter(t) ((t) == WB_ALetter || (t) == WB_Hebrew_Letter)
#define IS_WB_MidNumLetQ(t) ((t) == WB_MidNumLet || (t) == WB_Single_Quote)
static int
wb_get_next_main_code(OnigEncoding enc, UChar* p, const UChar* end,
OnigCodePoint* rcode, enum WB_TYPE* rtype)
{
OnigCodePoint code;
enum WB_TYPE type;
while (TRUE) {
p += enclen(enc, p);
if (p >= end) break;
code = ONIGENC_MBC_TO_CODE(enc, p, end);
type = wb_get_type(code);
if (! IS_WB_IGNORE_TAIL(type)) {
*rcode = code;
*rtype = type;
return 1;
}
}
return 0;
}
extern int
onigenc_wb_is_break_position(OnigEncoding enc, UChar* p, UChar* prev,
const UChar* start, const UChar* end)
{
int r;
UChar* pp;
OnigCodePoint cfrom;
OnigCodePoint cfrom2;
OnigCodePoint cto;
OnigCodePoint cto2;
enum WB_TYPE from;
enum WB_TYPE from2;
enum WB_TYPE to;
enum WB_TYPE to2;
/* WB1: sot / Any */
if (p == start) return TRUE;
/* WB2: Any / eot */
if (p == end) return TRUE;
if (IS_NULL(prev)) {
prev = onigenc_get_prev_char_head(enc, start, p);
if (IS_NULL(prev)) return TRUE;
}
cfrom = ONIGENC_MBC_TO_CODE(enc, prev, end);
cto = ONIGENC_MBC_TO_CODE(enc, p, end);
from = wb_get_type(cfrom);
to = wb_get_type(cto);
/* short cut */
if (from == 0 && to == 0) goto WB999;
/* WB3: CR + LF */
if (from == WB_CR && to == WB_LF) return FALSE;
/* WB3a: (Newline|CR|LF) / */
if (from == WB_Newline || from == WB_CR || from == WB_LF) return TRUE;
/* WB3b: / (Newline|CR|LF) */
if (to == WB_Newline || to == WB_CR || to == WB_LF) return TRUE;
/* WB3c: ZWJ + {Extended_Pictographic} */
if (from == WB_ZWJ) {
if (onigenc_unicode_is_code_ctype(cto, PROP_INDEX_EXTENDEDPICTOGRAPHIC))
return FALSE;
}
/* WB3d: WSegSpace + WSegSpace */
if (from == WB_WSegSpace && to == WB_WSegSpace) return FALSE;
/* WB4: X (Extend|Format|ZWJ)* -> X */
if (IS_WB_IGNORE_TAIL(to)) return FALSE;
if (IS_WB_IGNORE_TAIL(from)) {
while ((pp = onigenc_get_prev_char_head(enc, start, prev)) != NULL) {
prev = pp;
cfrom = ONIGENC_MBC_TO_CODE(enc, prev, end);
from = wb_get_type(cfrom);
if (! IS_WB_IGNORE_TAIL(from))
break;
}
}
if (IS_WB_AHLetter(from)) {
/* WB5: AHLetter + AHLetter */
if (IS_WB_AHLetter(to)) return FALSE;
/* WB6: AHLetter + (MidLetter | MidNumLetQ) AHLetter */
if (to == WB_MidLetter || IS_WB_MidNumLetQ(to)) {
r = wb_get_next_main_code(enc, p, end, &cto2, &to2);
if (r == 1) {
if (IS_WB_AHLetter(to2)) return FALSE;
}
}
}
/* WB7: AHLetter (MidLetter | MidNumLetQ) + AHLetter */
if (from == WB_MidLetter || IS_WB_MidNumLetQ(from)) {
if (IS_WB_AHLetter(to)) {
from2 = WB_Any;
while ((pp = onigenc_get_prev_char_head(enc, start, prev)) != NULL) {
prev = pp;
cfrom2 = ONIGENC_MBC_TO_CODE(enc, prev, end);
from2 = wb_get_type(cfrom2);
if (! IS_WB_IGNORE_TAIL(from2))
break;
}
if (IS_WB_AHLetter(from2)) return FALSE;
}
}
if (from == WB_Hebrew_Letter) {
/* WB7a: Hebrew_Letter + Single_Quote */
if (to == WB_Single_Quote) return FALSE;
/* WB7b: Hebrew_Letter + Double_Quote Hebrew_Letter */
if (to == WB_Double_Quote) {
r = wb_get_next_main_code(enc, p, end, &cto2, &to2);
if (r == 1) {
if (to2 == WB_Hebrew_Letter) return FALSE;
}
}
}
/* WB7c: Hebrew_Letter Double_Quote + Hebrew_Letter */
if (from == WB_Double_Quote) {
if (to == WB_Hebrew_Letter) {
from2 = WB_Any;
while ((pp = onigenc_get_prev_char_head(enc, start, prev)) != NULL) {
prev = pp;
cfrom2 = ONIGENC_MBC_TO_CODE(enc, prev, end);
from2 = wb_get_type(cfrom2);
if (! IS_WB_IGNORE_TAIL(from2))
break;
}
if (from2 == WB_Hebrew_Letter) return FALSE;
}
}
if (to == WB_Numeric) {
/* WB8: Numeric + Numeric */
if (from == WB_Numeric) return FALSE;
/* WB9: AHLetter + Numeric */
if (IS_WB_AHLetter(from)) return FALSE;
/* WB11: Numeric (MidNum | MidNumLetQ) + Numeric */
if (from == WB_MidNum || IS_WB_MidNumLetQ(from)) {
from2 = WB_Any;
while ((pp = onigenc_get_prev_char_head(enc, start, prev)) != NULL) {
prev = pp;
cfrom2 = ONIGENC_MBC_TO_CODE(enc, prev, end);
from2 = wb_get_type(cfrom2);
if (! IS_WB_IGNORE_TAIL(from2))
break;
}
if (from2 == WB_Numeric) return FALSE;
}
}
if (from == WB_Numeric) {
/* WB10: Numeric + AHLetter */
if (IS_WB_AHLetter(to)) return FALSE;
/* WB12: Numeric + (MidNum | MidNumLetQ) Numeric */
if (to == WB_MidNum || IS_WB_MidNumLetQ(to)) {
r = wb_get_next_main_code(enc, p, end, &cto2, &to2);
if (r == 1) {
if (to2 == WB_Numeric) return FALSE;
}
}
}
/* WB13: Katakana + Katakana */
if (from == WB_Katakana && to == WB_Katakana) return FALSE;
/* WB13a: (AHLetter | Numeric | Katakana | ExtendNumLet) + ExtendNumLet */
if (IS_WB_AHLetter(from) || from == WB_Numeric || from == WB_Katakana
|| from == WB_ExtendNumLet) {
if (to == WB_ExtendNumLet) return FALSE;
}
/* WB13b: ExtendNumLet + (AHLetter | Numeric | Katakana) */
if (from == WB_ExtendNumLet) {
if (IS_WB_AHLetter(to) || to == WB_Numeric || to == WB_Katakana)
return FALSE;
}
/* WB15: sot (RI RI)* RI + RI */
/* WB16: [^RI] (RI RI)* RI + RI */
if (from == WB_Regional_Indicator && to == WB_Regional_Indicator) {
int n = 0;
while ((prev = onigenc_get_prev_char_head(enc, start, prev)) != NULL) {
cfrom2 = ONIGENC_MBC_TO_CODE(enc, prev, end);
from2 = wb_get_type(cfrom2);
if (from2 != WB_Regional_Indicator)
break;
n++;
}
if ((n % 2) == 0) return FALSE;
}
WB999:
/* WB999: Any / Any */
return TRUE;
}
#endif /* USE_UNICODE_WORD_BREAK */
#ifdef USE_UNICODE_EXTENDED_GRAPHEME_CLUSTER
enum EGCB_BREAK_TYPE {
EGCB_NOT_BREAK = 0,
EGCB_BREAK = 1,
EGCB_BREAK_UNDEF_GB11 = 2,
EGCB_BREAK_UNDEF_RI_RI = 3
};
enum EGCB_TYPE {
EGCB_Other = 0,
EGCB_CR = 1,
EGCB_LF = 2,
EGCB_Control = 3,
EGCB_Extend = 4,
EGCB_Prepend = 5,
EGCB_Regional_Indicator = 6,
EGCB_SpacingMark = 7,
EGCB_ZWJ = 8,
#if 0
/* obsoleted */
EGCB_E_Base = 9,
EGCB_E_Base_GAZ = 10,
EGCB_E_Modifier = 11,
EGCB_Glue_After_Zwj = 12,
#endif
EGCB_L = 13,
EGCB_LV = 14,
EGCB_LVT = 15,
EGCB_T = 16,
EGCB_V = 17
};
typedef struct {
OnigCodePoint start;
OnigCodePoint end;
enum EGCB_TYPE type;
} EGCB_RANGE_TYPE;
#include "unicode_egcb_data.c"
static enum EGCB_TYPE
egcb_get_type(OnigCodePoint code)
{
OnigCodePoint low, high, x;
enum EGCB_TYPE type;
for (low = 0, high = (OnigCodePoint )EGCB_RANGE_NUM; low < high; ) {
x = (low + high) >> 1;
if (code > EGCB_RANGES[x].end)
low = x + 1;
else
high = x;
}
type = (low < (OnigCodePoint )EGCB_RANGE_NUM &&
code >= EGCB_RANGES[low].start) ?
EGCB_RANGES[low].type : EGCB_Other;
return type;
}
#define IS_CONTROL_CR_LF(code) ((code) <= EGCB_Control && (code) >= EGCB_CR)
#define IS_HANGUL(code) ((code) >= EGCB_L)
/* GB1 and GB2 are outside of this function. */
static enum EGCB_BREAK_TYPE
unicode_egcb_is_break_2code(OnigCodePoint from_code, OnigCodePoint to_code)
{
enum EGCB_TYPE from;
enum EGCB_TYPE to;
from = egcb_get_type(from_code);
to = egcb_get_type(to_code);
/* short cut */
if (from == 0 && to == 0) goto GB999;
/* GB3 */
if (from == EGCB_CR && to == EGCB_LF) return EGCB_NOT_BREAK;
/* GB4 */
if (IS_CONTROL_CR_LF(from)) return EGCB_BREAK;
/* GB5 */
if (IS_CONTROL_CR_LF(to)) return EGCB_BREAK;
if (IS_HANGUL(from) && IS_HANGUL(to)) {
/* GB6 */
if (from == EGCB_L && to != EGCB_T) return EGCB_NOT_BREAK;
/* GB7 */
if ((from == EGCB_LV || from == EGCB_V)
&& (to == EGCB_V || to == EGCB_T)) return EGCB_NOT_BREAK;
/* GB8 */
if ((to == EGCB_T) && (from == EGCB_LVT || from == EGCB_T))
return EGCB_NOT_BREAK;
goto GB999;
}
/* GB9 */
if (to == EGCB_Extend || to == EGCB_ZWJ) return EGCB_NOT_BREAK;
/* GB9a */
if (to == EGCB_SpacingMark) return EGCB_NOT_BREAK;
/* GB9b */
if (from == EGCB_Prepend) return EGCB_NOT_BREAK;
/* GB10 removed */
/* GB11 */
if (from == EGCB_ZWJ) {
if (onigenc_unicode_is_code_ctype(to_code, PROP_INDEX_EXTENDEDPICTOGRAPHIC))
return EGCB_BREAK_UNDEF_GB11;
goto GB999;
}
/* GB12, GB13 */
if (from == EGCB_Regional_Indicator && to == EGCB_Regional_Indicator) {
return EGCB_BREAK_UNDEF_RI_RI;
}
GB999:
return EGCB_BREAK;
}
#endif /* USE_UNICODE_EXTENDED_GRAPHEME_CLUSTER */
extern int
onigenc_egcb_is_break_position(OnigEncoding enc, UChar* p, UChar* prev,
const UChar* start, const UChar* end)
{
OnigCodePoint from;
OnigCodePoint to;
#ifdef USE_UNICODE_EXTENDED_GRAPHEME_CLUSTER
enum EGCB_BREAK_TYPE btype;
enum EGCB_TYPE type;
#endif
/* GB1 and GB2 */
if (p == start) return 1;
if (p == end) return 1;
if (IS_NULL(prev)) {
prev = onigenc_get_prev_char_head(enc, start, p);
if (IS_NULL(prev)) return 1;
}
from = ONIGENC_MBC_TO_CODE(enc, prev, end);
to = ONIGENC_MBC_TO_CODE(enc, p, end);
#ifdef USE_UNICODE_EXTENDED_GRAPHEME_CLUSTER
if (! ONIGENC_IS_UNICODE_ENCODING(enc)) {
return from != 0x000d || to != NEWLINE_CODE;
}
btype = unicode_egcb_is_break_2code(from, to);