mirror of
https://github.com/bellard/quickjs.git
synced 2024-11-24 06:38:12 +08:00
7a2c6f42d4
- move all `lre_xxx` functions to libunicode - use flags table `lre_ctype_bits` instead of bitmaps - simplify `lre_is_space`, `lre_js_is_ident_first` and `lre_js_is_ident_next` - simplify `simple_next_token`, handle UTF-8 correctly - simplify `is_let`, remove dead code
1911 lines
55 KiB
C
1911 lines
55 KiB
C
/*
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* Unicode utilities
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*
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* Copyright (c) 2017-2018 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <string.h>
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#include <assert.h>
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#include "cutils.h"
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#include "libunicode.h"
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#include "libunicode-table.h"
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enum {
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RUN_TYPE_U,
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RUN_TYPE_L,
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RUN_TYPE_UF,
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RUN_TYPE_LF,
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RUN_TYPE_UL,
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RUN_TYPE_LSU,
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RUN_TYPE_U2L_399_EXT2,
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RUN_TYPE_UF_D20,
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RUN_TYPE_UF_D1_EXT,
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RUN_TYPE_U_EXT,
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RUN_TYPE_LF_EXT,
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RUN_TYPE_UF_EXT2,
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RUN_TYPE_LF_EXT2,
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RUN_TYPE_UF_EXT3,
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};
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static int lre_case_conv1(uint32_t c, int conv_type)
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{
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uint32_t res[LRE_CC_RES_LEN_MAX];
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lre_case_conv(res, c, conv_type);
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return res[0];
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}
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/* case conversion using the table entry 'idx' with value 'v' */
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static int lre_case_conv_entry(uint32_t *res, uint32_t c, int conv_type, uint32_t idx, uint32_t v)
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{
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uint32_t code, data, type, a, is_lower;
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is_lower = (conv_type != 0);
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type = (v >> (32 - 17 - 7 - 4)) & 0xf;
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data = ((v & 0xf) << 8) | case_conv_table2[idx];
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code = v >> (32 - 17);
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switch(type) {
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case RUN_TYPE_U:
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case RUN_TYPE_L:
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case RUN_TYPE_UF:
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case RUN_TYPE_LF:
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if (conv_type == (type & 1) ||
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(type >= RUN_TYPE_UF && conv_type == 2)) {
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c = c - code + (case_conv_table1[data] >> (32 - 17));
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}
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break;
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case RUN_TYPE_UL:
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a = c - code;
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if ((a & 1) != (1 - is_lower))
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break;
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c = (a ^ 1) + code;
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break;
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case RUN_TYPE_LSU:
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a = c - code;
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if (a == 1) {
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c += 2 * is_lower - 1;
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} else if (a == (1 - is_lower) * 2) {
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c += (2 * is_lower - 1) * 2;
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}
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break;
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case RUN_TYPE_U2L_399_EXT2:
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if (!is_lower) {
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res[0] = c - code + case_conv_ext[data >> 6];
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res[1] = 0x399;
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return 2;
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} else {
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c = c - code + case_conv_ext[data & 0x3f];
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}
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break;
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case RUN_TYPE_UF_D20:
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if (conv_type == 1)
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break;
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c = data + (conv_type == 2) * 0x20;
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break;
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case RUN_TYPE_UF_D1_EXT:
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if (conv_type == 1)
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break;
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c = case_conv_ext[data] + (conv_type == 2);
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break;
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case RUN_TYPE_U_EXT:
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case RUN_TYPE_LF_EXT:
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if (is_lower != (type - RUN_TYPE_U_EXT))
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break;
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c = case_conv_ext[data];
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break;
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case RUN_TYPE_LF_EXT2:
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if (!is_lower)
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break;
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res[0] = c - code + case_conv_ext[data >> 6];
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res[1] = case_conv_ext[data & 0x3f];
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return 2;
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case RUN_TYPE_UF_EXT2:
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if (conv_type == 1)
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break;
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res[0] = c - code + case_conv_ext[data >> 6];
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res[1] = case_conv_ext[data & 0x3f];
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if (conv_type == 2) {
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/* convert to lower */
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res[0] = lre_case_conv1(res[0], 1);
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res[1] = lre_case_conv1(res[1], 1);
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}
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return 2;
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default:
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case RUN_TYPE_UF_EXT3:
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if (conv_type == 1)
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break;
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res[0] = case_conv_ext[data >> 8];
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res[1] = case_conv_ext[(data >> 4) & 0xf];
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res[2] = case_conv_ext[data & 0xf];
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if (conv_type == 2) {
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/* convert to lower */
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res[0] = lre_case_conv1(res[0], 1);
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res[1] = lre_case_conv1(res[1], 1);
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res[2] = lre_case_conv1(res[2], 1);
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}
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return 3;
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}
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res[0] = c;
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return 1;
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}
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/* conv_type:
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0 = to upper
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1 = to lower
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2 = case folding (= to lower with modifications)
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*/
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int lre_case_conv(uint32_t *res, uint32_t c, int conv_type)
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{
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if (c < 128) {
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if (conv_type) {
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if (c >= 'A' && c <= 'Z') {
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c = c - 'A' + 'a';
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}
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} else {
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if (c >= 'a' && c <= 'z') {
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c = c - 'a' + 'A';
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}
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}
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} else {
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uint32_t v, code, len;
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int idx, idx_min, idx_max;
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idx_min = 0;
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idx_max = countof(case_conv_table1) - 1;
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while (idx_min <= idx_max) {
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idx = (unsigned)(idx_max + idx_min) / 2;
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v = case_conv_table1[idx];
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code = v >> (32 - 17);
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len = (v >> (32 - 17 - 7)) & 0x7f;
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if (c < code) {
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idx_max = idx - 1;
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} else if (c >= code + len) {
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idx_min = idx + 1;
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} else {
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return lre_case_conv_entry(res, c, conv_type, idx, v);
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}
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}
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}
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res[0] = c;
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return 1;
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}
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static int lre_case_folding_entry(uint32_t c, uint32_t idx, uint32_t v, BOOL is_unicode)
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{
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uint32_t res[LRE_CC_RES_LEN_MAX];
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int len;
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if (is_unicode) {
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len = lre_case_conv_entry(res, c, 2, idx, v);
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if (len == 1) {
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c = res[0];
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} else {
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/* handle the few specific multi-character cases (see
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unicode_gen.c:dump_case_folding_special_cases()) */
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if (c == 0xfb06) {
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c = 0xfb05;
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} else if (c == 0x01fd3) {
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c = 0x390;
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} else if (c == 0x01fe3) {
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c = 0x3b0;
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}
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}
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} else {
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if (likely(c < 128)) {
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if (c >= 'a' && c <= 'z')
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c = c - 'a' + 'A';
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} else {
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/* legacy regexp: to upper case if single char >= 128 */
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len = lre_case_conv_entry(res, c, FALSE, idx, v);
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if (len == 1 && res[0] >= 128)
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c = res[0];
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}
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}
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return c;
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}
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/* JS regexp specific rules for case folding */
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int lre_canonicalize(uint32_t c, BOOL is_unicode)
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{
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if (c < 128) {
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/* fast case */
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if (is_unicode) {
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if (c >= 'A' && c <= 'Z') {
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c = c - 'A' + 'a';
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}
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} else {
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if (c >= 'a' && c <= 'z') {
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c = c - 'a' + 'A';
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}
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}
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} else {
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uint32_t v, code, len;
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int idx, idx_min, idx_max;
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idx_min = 0;
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idx_max = countof(case_conv_table1) - 1;
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while (idx_min <= idx_max) {
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idx = (unsigned)(idx_max + idx_min) / 2;
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v = case_conv_table1[idx];
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code = v >> (32 - 17);
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len = (v >> (32 - 17 - 7)) & 0x7f;
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if (c < code) {
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idx_max = idx - 1;
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} else if (c >= code + len) {
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idx_min = idx + 1;
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} else {
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return lre_case_folding_entry(c, idx, v, is_unicode);
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}
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}
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}
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return c;
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}
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static uint32_t get_le24(const uint8_t *ptr)
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{
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return ptr[0] | (ptr[1] << 8) | (ptr[2] << 16);
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}
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#define UNICODE_INDEX_BLOCK_LEN 32
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/* return -1 if not in table, otherwise the offset in the block */
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static int get_index_pos(uint32_t *pcode, uint32_t c,
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const uint8_t *index_table, int index_table_len)
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{
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uint32_t code, v;
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int idx_min, idx_max, idx;
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idx_min = 0;
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v = get_le24(index_table);
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code = v & ((1 << 21) - 1);
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if (c < code) {
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*pcode = 0;
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return 0;
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}
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idx_max = index_table_len - 1;
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code = get_le24(index_table + idx_max * 3);
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if (c >= code)
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return -1;
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/* invariant: tab[idx_min] <= c < tab2[idx_max] */
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while ((idx_max - idx_min) > 1) {
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idx = (idx_max + idx_min) / 2;
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v = get_le24(index_table + idx * 3);
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code = v & ((1 << 21) - 1);
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if (c < code) {
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idx_max = idx;
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} else {
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idx_min = idx;
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}
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}
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v = get_le24(index_table + idx_min * 3);
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*pcode = v & ((1 << 21) - 1);
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return (idx_min + 1) * UNICODE_INDEX_BLOCK_LEN + (v >> 21);
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}
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static BOOL lre_is_in_table(uint32_t c, const uint8_t *table,
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const uint8_t *index_table, int index_table_len)
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{
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uint32_t code, b, bit;
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int pos;
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const uint8_t *p;
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pos = get_index_pos(&code, c, index_table, index_table_len);
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if (pos < 0)
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return FALSE; /* outside the table */
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p = table + pos;
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bit = 0;
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/* Compressed run length encoding:
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00..3F: 2 packed lengths: 3-bit + 3-bit
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40..5F: 5-bits plus extra byte for length
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60..7F: 5-bits plus 2 extra bytes for length
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80..FF: 7-bit length
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lengths must be incremented to get character count
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Ranges alternate between false and true return value.
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*/
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for(;;) {
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b = *p++;
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if (b < 64) {
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code += (b >> 3) + 1;
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if (c < code)
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return bit;
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bit ^= 1;
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code += (b & 7) + 1;
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} else if (b >= 0x80) {
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code += b - 0x80 + 1;
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} else if (b < 0x60) {
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code += (((b - 0x40) << 8) | p[0]) + 1;
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p++;
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} else {
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code += (((b - 0x60) << 16) | (p[0] << 8) | p[1]) + 1;
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p += 2;
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}
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if (c < code)
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return bit;
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bit ^= 1;
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}
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}
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BOOL lre_is_cased(uint32_t c)
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{
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uint32_t v, code, len;
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int idx, idx_min, idx_max;
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idx_min = 0;
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idx_max = countof(case_conv_table1) - 1;
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while (idx_min <= idx_max) {
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idx = (unsigned)(idx_max + idx_min) / 2;
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v = case_conv_table1[idx];
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code = v >> (32 - 17);
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len = (v >> (32 - 17 - 7)) & 0x7f;
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if (c < code) {
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idx_max = idx - 1;
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} else if (c >= code + len) {
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idx_min = idx + 1;
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} else {
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return TRUE;
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}
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}
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return lre_is_in_table(c, unicode_prop_Cased1_table,
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unicode_prop_Cased1_index,
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sizeof(unicode_prop_Cased1_index) / 3);
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}
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BOOL lre_is_case_ignorable(uint32_t c)
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{
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return lre_is_in_table(c, unicode_prop_Case_Ignorable_table,
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unicode_prop_Case_Ignorable_index,
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sizeof(unicode_prop_Case_Ignorable_index) / 3);
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}
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/* character range */
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static __maybe_unused void cr_dump(CharRange *cr)
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{
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int i;
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for(i = 0; i < cr->len; i++)
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printf("%d: 0x%04x\n", i, cr->points[i]);
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}
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static void *cr_default_realloc(void *opaque, void *ptr, size_t size)
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{
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return realloc(ptr, size);
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}
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void cr_init(CharRange *cr, void *mem_opaque, DynBufReallocFunc *realloc_func)
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{
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cr->len = cr->size = 0;
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cr->points = NULL;
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cr->mem_opaque = mem_opaque;
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cr->realloc_func = realloc_func ? realloc_func : cr_default_realloc;
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}
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void cr_free(CharRange *cr)
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{
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cr->realloc_func(cr->mem_opaque, cr->points, 0);
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}
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int cr_realloc(CharRange *cr, int size)
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{
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int new_size;
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uint32_t *new_buf;
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if (size > cr->size) {
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new_size = max_int(size, cr->size * 3 / 2);
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new_buf = cr->realloc_func(cr->mem_opaque, cr->points,
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new_size * sizeof(cr->points[0]));
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if (!new_buf)
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return -1;
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cr->points = new_buf;
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cr->size = new_size;
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}
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return 0;
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}
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int cr_copy(CharRange *cr, const CharRange *cr1)
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{
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if (cr_realloc(cr, cr1->len))
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return -1;
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memcpy(cr->points, cr1->points, sizeof(cr->points[0]) * cr1->len);
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cr->len = cr1->len;
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return 0;
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}
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/* merge consecutive intervals and remove empty intervals */
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static void cr_compress(CharRange *cr)
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{
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int i, j, k, len;
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uint32_t *pt;
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pt = cr->points;
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len = cr->len;
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i = 0;
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j = 0;
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k = 0;
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while ((i + 1) < len) {
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if (pt[i] == pt[i + 1]) {
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/* empty interval */
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i += 2;
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} else {
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j = i;
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while ((j + 3) < len && pt[j + 1] == pt[j + 2])
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j += 2;
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/* just copy */
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pt[k] = pt[i];
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pt[k + 1] = pt[j + 1];
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k += 2;
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i = j + 2;
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}
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}
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cr->len = k;
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}
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/* union or intersection */
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int cr_op(CharRange *cr, const uint32_t *a_pt, int a_len,
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const uint32_t *b_pt, int b_len, int op)
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{
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int a_idx, b_idx, is_in;
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uint32_t v;
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a_idx = 0;
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b_idx = 0;
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for(;;) {
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/* get one more point from a or b in increasing order */
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if (a_idx < a_len && b_idx < b_len) {
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if (a_pt[a_idx] < b_pt[b_idx]) {
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goto a_add;
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} else if (a_pt[a_idx] == b_pt[b_idx]) {
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v = a_pt[a_idx];
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a_idx++;
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b_idx++;
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} else {
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goto b_add;
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}
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} else if (a_idx < a_len) {
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a_add:
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v = a_pt[a_idx++];
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} else if (b_idx < b_len) {
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b_add:
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v = b_pt[b_idx++];
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} else {
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break;
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}
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/* add the point if the in/out status changes */
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switch(op) {
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case CR_OP_UNION:
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is_in = (a_idx & 1) | (b_idx & 1);
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break;
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case CR_OP_INTER:
|
|
is_in = (a_idx & 1) & (b_idx & 1);
|
|
break;
|
|
case CR_OP_XOR:
|
|
is_in = (a_idx & 1) ^ (b_idx & 1);
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
if (is_in != (cr->len & 1)) {
|
|
if (cr_add_point(cr, v))
|
|
return -1;
|
|
}
|
|
}
|
|
cr_compress(cr);
|
|
return 0;
|
|
}
|
|
|
|
int cr_union1(CharRange *cr, const uint32_t *b_pt, int b_len)
|
|
{
|
|
CharRange a = *cr;
|
|
int ret;
|
|
cr->len = 0;
|
|
cr->size = 0;
|
|
cr->points = NULL;
|
|
ret = cr_op(cr, a.points, a.len, b_pt, b_len, CR_OP_UNION);
|
|
cr_free(&a);
|
|
return ret;
|
|
}
|
|
|
|
int cr_invert(CharRange *cr)
|
|
{
|
|
int len;
|
|
len = cr->len;
|
|
if (cr_realloc(cr, len + 2))
|
|
return -1;
|
|
memmove(cr->points + 1, cr->points, len * sizeof(cr->points[0]));
|
|
cr->points[0] = 0;
|
|
cr->points[len + 1] = UINT32_MAX;
|
|
cr->len = len + 2;
|
|
cr_compress(cr);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_ALL_UNICODE
|
|
|
|
BOOL lre_is_id_start(uint32_t c)
|
|
{
|
|
return lre_is_in_table(c, unicode_prop_ID_Start_table,
|
|
unicode_prop_ID_Start_index,
|
|
sizeof(unicode_prop_ID_Start_index) / 3);
|
|
}
|
|
|
|
BOOL lre_is_id_continue(uint32_t c)
|
|
{
|
|
return lre_is_id_start(c) ||
|
|
lre_is_in_table(c, unicode_prop_ID_Continue1_table,
|
|
unicode_prop_ID_Continue1_index,
|
|
sizeof(unicode_prop_ID_Continue1_index) / 3);
|
|
}
|
|
|
|
#define UNICODE_DECOMP_LEN_MAX 18
|
|
|
|
typedef enum {
|
|
DECOMP_TYPE_C1, /* 16 bit char */
|
|
DECOMP_TYPE_L1, /* 16 bit char table */
|
|
DECOMP_TYPE_L2,
|
|
DECOMP_TYPE_L3,
|
|
DECOMP_TYPE_L4,
|
|
DECOMP_TYPE_L5, /* XXX: not used */
|
|
DECOMP_TYPE_L6, /* XXX: could remove */
|
|
DECOMP_TYPE_L7, /* XXX: could remove */
|
|
DECOMP_TYPE_LL1, /* 18 bit char table */
|
|
DECOMP_TYPE_LL2,
|
|
DECOMP_TYPE_S1, /* 8 bit char table */
|
|
DECOMP_TYPE_S2,
|
|
DECOMP_TYPE_S3,
|
|
DECOMP_TYPE_S4,
|
|
DECOMP_TYPE_S5,
|
|
DECOMP_TYPE_I1, /* increment 16 bit char value */
|
|
DECOMP_TYPE_I2_0,
|
|
DECOMP_TYPE_I2_1,
|
|
DECOMP_TYPE_I3_1,
|
|
DECOMP_TYPE_I3_2,
|
|
DECOMP_TYPE_I4_1,
|
|
DECOMP_TYPE_I4_2,
|
|
DECOMP_TYPE_B1, /* 16 bit base + 8 bit offset */
|
|
DECOMP_TYPE_B2,
|
|
DECOMP_TYPE_B3,
|
|
DECOMP_TYPE_B4,
|
|
DECOMP_TYPE_B5,
|
|
DECOMP_TYPE_B6,
|
|
DECOMP_TYPE_B7,
|
|
DECOMP_TYPE_B8,
|
|
DECOMP_TYPE_B18,
|
|
DECOMP_TYPE_LS2,
|
|
DECOMP_TYPE_PAT3,
|
|
DECOMP_TYPE_S2_UL,
|
|
DECOMP_TYPE_LS2_UL,
|
|
} DecompTypeEnum;
|
|
|
|
static uint32_t unicode_get_short_code(uint32_t c)
|
|
{
|
|
static const uint16_t unicode_short_table[2] = { 0x2044, 0x2215 };
|
|
|
|
if (c < 0x80)
|
|
return c;
|
|
else if (c < 0x80 + 0x50)
|
|
return c - 0x80 + 0x300;
|
|
else
|
|
return unicode_short_table[c - 0x80 - 0x50];
|
|
}
|
|
|
|
static uint32_t unicode_get_lower_simple(uint32_t c)
|
|
{
|
|
if (c < 0x100 || (c >= 0x410 && c <= 0x42f))
|
|
c += 0x20;
|
|
else
|
|
c++;
|
|
return c;
|
|
}
|
|
|
|
static uint16_t unicode_get16(const uint8_t *p)
|
|
{
|
|
return p[0] | (p[1] << 8);
|
|
}
|
|
|
|
static int unicode_decomp_entry(uint32_t *res, uint32_t c,
|
|
int idx, uint32_t code, uint32_t len,
|
|
uint32_t type)
|
|
{
|
|
uint32_t c1;
|
|
int l, i, p;
|
|
const uint8_t *d;
|
|
|
|
if (type == DECOMP_TYPE_C1) {
|
|
res[0] = unicode_decomp_table2[idx];
|
|
return 1;
|
|
} else {
|
|
d = unicode_decomp_data + unicode_decomp_table2[idx];
|
|
switch(type) {
|
|
case DECOMP_TYPE_L1:
|
|
case DECOMP_TYPE_L2:
|
|
case DECOMP_TYPE_L3:
|
|
case DECOMP_TYPE_L4:
|
|
case DECOMP_TYPE_L5:
|
|
case DECOMP_TYPE_L6:
|
|
case DECOMP_TYPE_L7:
|
|
l = type - DECOMP_TYPE_L1 + 1;
|
|
d += (c - code) * l * 2;
|
|
for(i = 0; i < l; i++) {
|
|
if ((res[i] = unicode_get16(d + 2 * i)) == 0)
|
|
return 0;
|
|
}
|
|
return l;
|
|
case DECOMP_TYPE_LL1:
|
|
case DECOMP_TYPE_LL2:
|
|
{
|
|
uint32_t k, p;
|
|
l = type - DECOMP_TYPE_LL1 + 1;
|
|
k = (c - code) * l;
|
|
p = len * l * 2;
|
|
for(i = 0; i < l; i++) {
|
|
c1 = unicode_get16(d + 2 * k) |
|
|
(((d[p + (k / 4)] >> ((k % 4) * 2)) & 3) << 16);
|
|
if (!c1)
|
|
return 0;
|
|
res[i] = c1;
|
|
k++;
|
|
}
|
|
}
|
|
return l;
|
|
case DECOMP_TYPE_S1:
|
|
case DECOMP_TYPE_S2:
|
|
case DECOMP_TYPE_S3:
|
|
case DECOMP_TYPE_S4:
|
|
case DECOMP_TYPE_S5:
|
|
l = type - DECOMP_TYPE_S1 + 1;
|
|
d += (c - code) * l;
|
|
for(i = 0; i < l; i++) {
|
|
if ((res[i] = unicode_get_short_code(d[i])) == 0)
|
|
return 0;
|
|
}
|
|
return l;
|
|
case DECOMP_TYPE_I1:
|
|
l = 1;
|
|
p = 0;
|
|
goto decomp_type_i;
|
|
case DECOMP_TYPE_I2_0:
|
|
case DECOMP_TYPE_I2_1:
|
|
case DECOMP_TYPE_I3_1:
|
|
case DECOMP_TYPE_I3_2:
|
|
case DECOMP_TYPE_I4_1:
|
|
case DECOMP_TYPE_I4_2:
|
|
l = 2 + ((type - DECOMP_TYPE_I2_0) >> 1);
|
|
p = ((type - DECOMP_TYPE_I2_0) & 1) + (l > 2);
|
|
decomp_type_i:
|
|
for(i = 0; i < l; i++) {
|
|
c1 = unicode_get16(d + 2 * i);
|
|
if (i == p)
|
|
c1 += c - code;
|
|
res[i] = c1;
|
|
}
|
|
return l;
|
|
case DECOMP_TYPE_B18:
|
|
l = 18;
|
|
goto decomp_type_b;
|
|
case DECOMP_TYPE_B1:
|
|
case DECOMP_TYPE_B2:
|
|
case DECOMP_TYPE_B3:
|
|
case DECOMP_TYPE_B4:
|
|
case DECOMP_TYPE_B5:
|
|
case DECOMP_TYPE_B6:
|
|
case DECOMP_TYPE_B7:
|
|
case DECOMP_TYPE_B8:
|
|
l = type - DECOMP_TYPE_B1 + 1;
|
|
decomp_type_b:
|
|
{
|
|
uint32_t c_min;
|
|
c_min = unicode_get16(d);
|
|
d += 2 + (c - code) * l;
|
|
for(i = 0; i < l; i++) {
|
|
c1 = d[i];
|
|
if (c1 == 0xff)
|
|
c1 = 0x20;
|
|
else
|
|
c1 += c_min;
|
|
res[i] = c1;
|
|
}
|
|
}
|
|
return l;
|
|
case DECOMP_TYPE_LS2:
|
|
d += (c - code) * 3;
|
|
if (!(res[0] = unicode_get16(d)))
|
|
return 0;
|
|
res[1] = unicode_get_short_code(d[2]);
|
|
return 2;
|
|
case DECOMP_TYPE_PAT3:
|
|
res[0] = unicode_get16(d);
|
|
res[2] = unicode_get16(d + 2);
|
|
d += 4 + (c - code) * 2;
|
|
res[1] = unicode_get16(d);
|
|
return 3;
|
|
case DECOMP_TYPE_S2_UL:
|
|
case DECOMP_TYPE_LS2_UL:
|
|
c1 = c - code;
|
|
if (type == DECOMP_TYPE_S2_UL) {
|
|
d += c1 & ~1;
|
|
c = unicode_get_short_code(*d);
|
|
d++;
|
|
} else {
|
|
d += (c1 >> 1) * 3;
|
|
c = unicode_get16(d);
|
|
d += 2;
|
|
}
|
|
if (c1 & 1)
|
|
c = unicode_get_lower_simple(c);
|
|
res[0] = c;
|
|
res[1] = unicode_get_short_code(*d);
|
|
return 2;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* return the length of the decomposition (length <=
|
|
UNICODE_DECOMP_LEN_MAX) or 0 if no decomposition */
|
|
static int unicode_decomp_char(uint32_t *res, uint32_t c, BOOL is_compat1)
|
|
{
|
|
uint32_t v, type, is_compat, code, len;
|
|
int idx_min, idx_max, idx;
|
|
|
|
idx_min = 0;
|
|
idx_max = countof(unicode_decomp_table1) - 1;
|
|
while (idx_min <= idx_max) {
|
|
idx = (idx_max + idx_min) / 2;
|
|
v = unicode_decomp_table1[idx];
|
|
code = v >> (32 - 18);
|
|
len = (v >> (32 - 18 - 7)) & 0x7f;
|
|
// printf("idx=%d code=%05x len=%d\n", idx, code, len);
|
|
if (c < code) {
|
|
idx_max = idx - 1;
|
|
} else if (c >= code + len) {
|
|
idx_min = idx + 1;
|
|
} else {
|
|
is_compat = v & 1;
|
|
if (is_compat1 < is_compat)
|
|
break;
|
|
type = (v >> (32 - 18 - 7 - 6)) & 0x3f;
|
|
return unicode_decomp_entry(res, c, idx, code, len, type);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* return 0 if no pair found */
|
|
static int unicode_compose_pair(uint32_t c0, uint32_t c1)
|
|
{
|
|
uint32_t code, len, type, v, idx1, d_idx, d_offset, ch;
|
|
int idx_min, idx_max, idx, d;
|
|
uint32_t pair[2];
|
|
|
|
idx_min = 0;
|
|
idx_max = countof(unicode_comp_table) - 1;
|
|
while (idx_min <= idx_max) {
|
|
idx = (idx_max + idx_min) / 2;
|
|
idx1 = unicode_comp_table[idx];
|
|
|
|
/* idx1 represent an entry of the decomposition table */
|
|
d_idx = idx1 >> 6;
|
|
d_offset = idx1 & 0x3f;
|
|
v = unicode_decomp_table1[d_idx];
|
|
code = v >> (32 - 18);
|
|
len = (v >> (32 - 18 - 7)) & 0x7f;
|
|
type = (v >> (32 - 18 - 7 - 6)) & 0x3f;
|
|
ch = code + d_offset;
|
|
unicode_decomp_entry(pair, ch, d_idx, code, len, type);
|
|
d = c0 - pair[0];
|
|
if (d == 0)
|
|
d = c1 - pair[1];
|
|
if (d < 0) {
|
|
idx_max = idx - 1;
|
|
} else if (d > 0) {
|
|
idx_min = idx + 1;
|
|
} else {
|
|
return ch;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* return the combining class of character c (between 0 and 255) */
|
|
static int unicode_get_cc(uint32_t c)
|
|
{
|
|
uint32_t code, n, type, cc, c1, b;
|
|
int pos;
|
|
const uint8_t *p;
|
|
|
|
pos = get_index_pos(&code, c,
|
|
unicode_cc_index, sizeof(unicode_cc_index) / 3);
|
|
if (pos < 0)
|
|
return 0;
|
|
p = unicode_cc_table + pos;
|
|
/* Compressed run length encoding:
|
|
- 2 high order bits are combining class type
|
|
- 0:0, 1:230, 2:extra byte linear progression, 3:extra byte
|
|
- 00..2F: range length (add 1)
|
|
- 30..37: 3-bit range-length + 1 extra byte
|
|
- 38..3F: 3-bit range-length + 2 extra byte
|
|
*/
|
|
for(;;) {
|
|
b = *p++;
|
|
type = b >> 6;
|
|
n = b & 0x3f;
|
|
if (n < 48) {
|
|
} else if (n < 56) {
|
|
n = (n - 48) << 8;
|
|
n |= *p++;
|
|
n += 48;
|
|
} else {
|
|
n = (n - 56) << 8;
|
|
n |= *p++ << 8;
|
|
n |= *p++;
|
|
n += 48 + (1 << 11);
|
|
}
|
|
if (type <= 1)
|
|
p++;
|
|
c1 = code + n + 1;
|
|
if (c < c1) {
|
|
switch(type) {
|
|
case 0:
|
|
cc = p[-1];
|
|
break;
|
|
case 1:
|
|
cc = p[-1] + c - code;
|
|
break;
|
|
case 2:
|
|
cc = 0;
|
|
break;
|
|
default:
|
|
case 3:
|
|
cc = 230;
|
|
break;
|
|
}
|
|
return cc;
|
|
}
|
|
code = c1;
|
|
}
|
|
}
|
|
|
|
static void sort_cc(int *buf, int len)
|
|
{
|
|
int i, j, k, cc, cc1, start, ch1;
|
|
|
|
for(i = 0; i < len; i++) {
|
|
cc = unicode_get_cc(buf[i]);
|
|
if (cc != 0) {
|
|
start = i;
|
|
j = i + 1;
|
|
while (j < len) {
|
|
ch1 = buf[j];
|
|
cc1 = unicode_get_cc(ch1);
|
|
if (cc1 == 0)
|
|
break;
|
|
k = j - 1;
|
|
while (k >= start) {
|
|
if (unicode_get_cc(buf[k]) <= cc1)
|
|
break;
|
|
buf[k + 1] = buf[k];
|
|
k--;
|
|
}
|
|
buf[k + 1] = ch1;
|
|
j++;
|
|
}
|
|
#if 0
|
|
printf("cc:");
|
|
for(k = start; k < j; k++) {
|
|
printf(" %3d", unicode_get_cc(buf[k]));
|
|
}
|
|
printf("\n");
|
|
#endif
|
|
i = j;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void to_nfd_rec(DynBuf *dbuf,
|
|
const int *src, int src_len, int is_compat)
|
|
{
|
|
uint32_t c, v;
|
|
int i, l;
|
|
uint32_t res[UNICODE_DECOMP_LEN_MAX];
|
|
|
|
for(i = 0; i < src_len; i++) {
|
|
c = src[i];
|
|
if (c >= 0xac00 && c < 0xd7a4) {
|
|
/* Hangul decomposition */
|
|
c -= 0xac00;
|
|
dbuf_put_u32(dbuf, 0x1100 + c / 588);
|
|
dbuf_put_u32(dbuf, 0x1161 + (c % 588) / 28);
|
|
v = c % 28;
|
|
if (v != 0)
|
|
dbuf_put_u32(dbuf, 0x11a7 + v);
|
|
} else {
|
|
l = unicode_decomp_char(res, c, is_compat);
|
|
if (l) {
|
|
to_nfd_rec(dbuf, (int *)res, l, is_compat);
|
|
} else {
|
|
dbuf_put_u32(dbuf, c);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* return 0 if not found */
|
|
static int compose_pair(uint32_t c0, uint32_t c1)
|
|
{
|
|
/* Hangul composition */
|
|
if (c0 >= 0x1100 && c0 < 0x1100 + 19 &&
|
|
c1 >= 0x1161 && c1 < 0x1161 + 21) {
|
|
return 0xac00 + (c0 - 0x1100) * 588 + (c1 - 0x1161) * 28;
|
|
} else if (c0 >= 0xac00 && c0 < 0xac00 + 11172 &&
|
|
(c0 - 0xac00) % 28 == 0 &&
|
|
c1 >= 0x11a7 && c1 < 0x11a7 + 28) {
|
|
return c0 + c1 - 0x11a7;
|
|
} else {
|
|
return unicode_compose_pair(c0, c1);
|
|
}
|
|
}
|
|
|
|
int unicode_normalize(uint32_t **pdst, const uint32_t *src, int src_len,
|
|
UnicodeNormalizationEnum n_type,
|
|
void *opaque, DynBufReallocFunc *realloc_func)
|
|
{
|
|
int *buf, buf_len, i, p, starter_pos, cc, last_cc, out_len;
|
|
BOOL is_compat;
|
|
DynBuf dbuf_s, *dbuf = &dbuf_s;
|
|
|
|
is_compat = n_type >> 1;
|
|
|
|
dbuf_init2(dbuf, opaque, realloc_func);
|
|
if (dbuf_realloc(dbuf, sizeof(int) * src_len))
|
|
goto fail;
|
|
|
|
/* common case: latin1 is unaffected by NFC */
|
|
if (n_type == UNICODE_NFC) {
|
|
for(i = 0; i < src_len; i++) {
|
|
if (src[i] >= 0x100)
|
|
goto not_latin1;
|
|
}
|
|
buf = (int *)dbuf->buf;
|
|
memcpy(buf, src, src_len * sizeof(int));
|
|
*pdst = (uint32_t *)buf;
|
|
return src_len;
|
|
not_latin1: ;
|
|
}
|
|
|
|
to_nfd_rec(dbuf, (const int *)src, src_len, is_compat);
|
|
if (dbuf_error(dbuf)) {
|
|
fail:
|
|
*pdst = NULL;
|
|
return -1;
|
|
}
|
|
buf = (int *)dbuf->buf;
|
|
buf_len = dbuf->size / sizeof(int);
|
|
|
|
sort_cc(buf, buf_len);
|
|
|
|
if (buf_len <= 1 || (n_type & 1) != 0) {
|
|
/* NFD / NFKD */
|
|
*pdst = (uint32_t *)buf;
|
|
return buf_len;
|
|
}
|
|
|
|
i = 1;
|
|
out_len = 1;
|
|
while (i < buf_len) {
|
|
/* find the starter character and test if it is blocked from
|
|
the character at 'i' */
|
|
last_cc = unicode_get_cc(buf[i]);
|
|
starter_pos = out_len - 1;
|
|
while (starter_pos >= 0) {
|
|
cc = unicode_get_cc(buf[starter_pos]);
|
|
if (cc == 0)
|
|
break;
|
|
if (cc >= last_cc)
|
|
goto next;
|
|
last_cc = 256;
|
|
starter_pos--;
|
|
}
|
|
if (starter_pos >= 0 &&
|
|
(p = compose_pair(buf[starter_pos], buf[i])) != 0) {
|
|
buf[starter_pos] = p;
|
|
i++;
|
|
} else {
|
|
next:
|
|
buf[out_len++] = buf[i++];
|
|
}
|
|
}
|
|
*pdst = (uint32_t *)buf;
|
|
return out_len;
|
|
}
|
|
|
|
/* char ranges for various unicode properties */
|
|
|
|
static int unicode_find_name(const char *name_table, const char *name)
|
|
{
|
|
const char *p, *r;
|
|
int pos;
|
|
size_t name_len, len;
|
|
|
|
p = name_table;
|
|
pos = 0;
|
|
name_len = strlen(name);
|
|
while (*p) {
|
|
for(;;) {
|
|
r = strchr(p, ',');
|
|
if (!r)
|
|
len = strlen(p);
|
|
else
|
|
len = r - p;
|
|
if (len == name_len && !memcmp(p, name, name_len))
|
|
return pos;
|
|
p += len + 1;
|
|
if (!r)
|
|
break;
|
|
}
|
|
pos++;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/* 'cr' must be initialized and empty. Return 0 if OK, -1 if error, -2
|
|
if not found */
|
|
int unicode_script(CharRange *cr,
|
|
const char *script_name, BOOL is_ext)
|
|
{
|
|
int script_idx;
|
|
const uint8_t *p, *p_end;
|
|
uint32_t c, c1, b, n, v, v_len, i, type;
|
|
CharRange cr1_s, *cr1;
|
|
CharRange cr2_s, *cr2 = &cr2_s;
|
|
BOOL is_common;
|
|
|
|
script_idx = unicode_find_name(unicode_script_name_table, script_name);
|
|
if (script_idx < 0)
|
|
return -2;
|
|
/* Note: we remove the "Unknown" Script */
|
|
script_idx += UNICODE_SCRIPT_Unknown + 1;
|
|
|
|
is_common = (script_idx == UNICODE_SCRIPT_Common ||
|
|
script_idx == UNICODE_SCRIPT_Inherited);
|
|
if (is_ext) {
|
|
cr1 = &cr1_s;
|
|
cr_init(cr1, cr->mem_opaque, cr->realloc_func);
|
|
cr_init(cr2, cr->mem_opaque, cr->realloc_func);
|
|
} else {
|
|
cr1 = cr;
|
|
}
|
|
|
|
p = unicode_script_table;
|
|
p_end = unicode_script_table + countof(unicode_script_table);
|
|
c = 0;
|
|
while (p < p_end) {
|
|
b = *p++;
|
|
type = b >> 7;
|
|
n = b & 0x7f;
|
|
if (n < 96) {
|
|
} else if (n < 112) {
|
|
n = (n - 96) << 8;
|
|
n |= *p++;
|
|
n += 96;
|
|
} else {
|
|
n = (n - 112) << 16;
|
|
n |= *p++ << 8;
|
|
n |= *p++;
|
|
n += 96 + (1 << 12);
|
|
}
|
|
if (type == 0)
|
|
v = 0;
|
|
else
|
|
v = *p++;
|
|
c1 = c + n + 1;
|
|
if (v == script_idx) {
|
|
if (cr_add_interval(cr1, c, c1))
|
|
goto fail;
|
|
}
|
|
c = c1;
|
|
}
|
|
|
|
if (is_ext) {
|
|
/* add the script extensions */
|
|
p = unicode_script_ext_table;
|
|
p_end = unicode_script_ext_table + countof(unicode_script_ext_table);
|
|
c = 0;
|
|
while (p < p_end) {
|
|
b = *p++;
|
|
if (b < 128) {
|
|
n = b;
|
|
} else if (b < 128 + 64) {
|
|
n = (b - 128) << 8;
|
|
n |= *p++;
|
|
n += 128;
|
|
} else {
|
|
n = (b - 128 - 64) << 16;
|
|
n |= *p++ << 8;
|
|
n |= *p++;
|
|
n += 128 + (1 << 14);
|
|
}
|
|
c1 = c + n + 1;
|
|
v_len = *p++;
|
|
if (is_common) {
|
|
if (v_len != 0) {
|
|
if (cr_add_interval(cr2, c, c1))
|
|
goto fail;
|
|
}
|
|
} else {
|
|
for(i = 0; i < v_len; i++) {
|
|
if (p[i] == script_idx) {
|
|
if (cr_add_interval(cr2, c, c1))
|
|
goto fail;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
p += v_len;
|
|
c = c1;
|
|
}
|
|
if (is_common) {
|
|
/* remove all the characters with script extensions */
|
|
if (cr_invert(cr2))
|
|
goto fail;
|
|
if (cr_op(cr, cr1->points, cr1->len, cr2->points, cr2->len,
|
|
CR_OP_INTER))
|
|
goto fail;
|
|
} else {
|
|
if (cr_op(cr, cr1->points, cr1->len, cr2->points, cr2->len,
|
|
CR_OP_UNION))
|
|
goto fail;
|
|
}
|
|
cr_free(cr1);
|
|
cr_free(cr2);
|
|
}
|
|
return 0;
|
|
fail:
|
|
if (is_ext) {
|
|
cr_free(cr1);
|
|
cr_free(cr2);
|
|
}
|
|
goto fail;
|
|
}
|
|
|
|
#define M(id) (1U << UNICODE_GC_ ## id)
|
|
|
|
static int unicode_general_category1(CharRange *cr, uint32_t gc_mask)
|
|
{
|
|
const uint8_t *p, *p_end;
|
|
uint32_t c, c0, b, n, v;
|
|
|
|
p = unicode_gc_table;
|
|
p_end = unicode_gc_table + countof(unicode_gc_table);
|
|
c = 0;
|
|
/* Compressed range encoding:
|
|
initial byte:
|
|
bits 0..4: category number (special case 31)
|
|
bits 5..7: range length (add 1)
|
|
special case bits 5..7 == 7: read an extra byte
|
|
- 00..7F: range length (add 7 + 1)
|
|
- 80..BF: 6-bits plus extra byte for range length (add 7 + 128)
|
|
- C0..FF: 6-bits plus 2 extra bytes for range length (add 7 + 128 + 16384)
|
|
*/
|
|
while (p < p_end) {
|
|
b = *p++;
|
|
n = b >> 5;
|
|
v = b & 0x1f;
|
|
if (n == 7) {
|
|
n = *p++;
|
|
if (n < 128) {
|
|
n += 7;
|
|
} else if (n < 128 + 64) {
|
|
n = (n - 128) << 8;
|
|
n |= *p++;
|
|
n += 7 + 128;
|
|
} else {
|
|
n = (n - 128 - 64) << 16;
|
|
n |= *p++ << 8;
|
|
n |= *p++;
|
|
n += 7 + 128 + (1 << 14);
|
|
}
|
|
}
|
|
c0 = c;
|
|
c += n + 1;
|
|
if (v == 31) {
|
|
/* run of Lu / Ll */
|
|
b = gc_mask & (M(Lu) | M(Ll));
|
|
if (b != 0) {
|
|
if (b == (M(Lu) | M(Ll))) {
|
|
goto add_range;
|
|
} else {
|
|
c0 += ((gc_mask & M(Ll)) != 0);
|
|
for(; c0 < c; c0 += 2) {
|
|
if (cr_add_interval(cr, c0, c0 + 1))
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
} else if ((gc_mask >> v) & 1) {
|
|
add_range:
|
|
if (cr_add_interval(cr, c0, c))
|
|
return -1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int unicode_prop1(CharRange *cr, int prop_idx)
|
|
{
|
|
const uint8_t *p, *p_end;
|
|
uint32_t c, c0, b, bit;
|
|
|
|
p = unicode_prop_table[prop_idx];
|
|
p_end = p + unicode_prop_len_table[prop_idx];
|
|
c = 0;
|
|
bit = 0;
|
|
/* Compressed range encoding:
|
|
00..3F: 2 packed lengths: 3-bit + 3-bit
|
|
40..5F: 5-bits plus extra byte for length
|
|
60..7F: 5-bits plus 2 extra bytes for length
|
|
80..FF: 7-bit length
|
|
lengths must be incremented to get character count
|
|
Ranges alternate between false and true return value.
|
|
*/
|
|
while (p < p_end) {
|
|
c0 = c;
|
|
b = *p++;
|
|
if (b < 64) {
|
|
c += (b >> 3) + 1;
|
|
if (bit) {
|
|
if (cr_add_interval(cr, c0, c))
|
|
return -1;
|
|
}
|
|
bit ^= 1;
|
|
c0 = c;
|
|
c += (b & 7) + 1;
|
|
} else if (b >= 0x80) {
|
|
c += b - 0x80 + 1;
|
|
} else if (b < 0x60) {
|
|
c += (((b - 0x40) << 8) | p[0]) + 1;
|
|
p++;
|
|
} else {
|
|
c += (((b - 0x60) << 16) | (p[0] << 8) | p[1]) + 1;
|
|
p += 2;
|
|
}
|
|
if (bit) {
|
|
if (cr_add_interval(cr, c0, c))
|
|
return -1;
|
|
}
|
|
bit ^= 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#define CASE_U (1 << 0)
|
|
#define CASE_L (1 << 1)
|
|
#define CASE_F (1 << 2)
|
|
|
|
/* use the case conversion table to generate range of characters.
|
|
CASE_U: set char if modified by uppercasing,
|
|
CASE_L: set char if modified by lowercasing,
|
|
CASE_F: set char if modified by case folding,
|
|
*/
|
|
static int unicode_case1(CharRange *cr, int case_mask)
|
|
{
|
|
#define MR(x) (1 << RUN_TYPE_ ## x)
|
|
const uint32_t tab_run_mask[3] = {
|
|
MR(U) | MR(UF) | MR(UL) | MR(LSU) | MR(U2L_399_EXT2) | MR(UF_D20) |
|
|
MR(UF_D1_EXT) | MR(U_EXT) | MR(UF_EXT2) | MR(UF_EXT3),
|
|
|
|
MR(L) | MR(LF) | MR(UL) | MR(LSU) | MR(U2L_399_EXT2) | MR(LF_EXT) | MR(LF_EXT2),
|
|
|
|
MR(UF) | MR(LF) | MR(UL) | MR(LSU) | MR(U2L_399_EXT2) | MR(LF_EXT) | MR(LF_EXT2) | MR(UF_D20) | MR(UF_D1_EXT) | MR(LF_EXT) | MR(UF_EXT2) | MR(UF_EXT3),
|
|
};
|
|
#undef MR
|
|
uint32_t mask, v, code, type, len, i, idx;
|
|
|
|
if (case_mask == 0)
|
|
return 0;
|
|
mask = 0;
|
|
for(i = 0; i < 3; i++) {
|
|
if ((case_mask >> i) & 1)
|
|
mask |= tab_run_mask[i];
|
|
}
|
|
for(idx = 0; idx < countof(case_conv_table1); idx++) {
|
|
v = case_conv_table1[idx];
|
|
type = (v >> (32 - 17 - 7 - 4)) & 0xf;
|
|
code = v >> (32 - 17);
|
|
len = (v >> (32 - 17 - 7)) & 0x7f;
|
|
if ((mask >> type) & 1) {
|
|
// printf("%d: type=%d %04x %04x\n", idx, type, code, code + len - 1);
|
|
switch(type) {
|
|
case RUN_TYPE_UL:
|
|
if ((case_mask & CASE_U) && (case_mask & (CASE_L | CASE_F)))
|
|
goto def_case;
|
|
code += ((case_mask & CASE_U) != 0);
|
|
for(i = 0; i < len; i += 2) {
|
|
if (cr_add_interval(cr, code + i, code + i + 1))
|
|
return -1;
|
|
}
|
|
break;
|
|
case RUN_TYPE_LSU:
|
|
if ((case_mask & CASE_U) && (case_mask & (CASE_L | CASE_F)))
|
|
goto def_case;
|
|
if (!(case_mask & CASE_U)) {
|
|
if (cr_add_interval(cr, code, code + 1))
|
|
return -1;
|
|
}
|
|
if (cr_add_interval(cr, code + 1, code + 2))
|
|
return -1;
|
|
if (case_mask & CASE_U) {
|
|
if (cr_add_interval(cr, code + 2, code + 3))
|
|
return -1;
|
|
}
|
|
break;
|
|
default:
|
|
def_case:
|
|
if (cr_add_interval(cr, code, code + len))
|
|
return -1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int point_cmp(const void *p1, const void *p2, void *arg)
|
|
{
|
|
uint32_t v1 = *(uint32_t *)p1;
|
|
uint32_t v2 = *(uint32_t *)p2;
|
|
return (v1 > v2) - (v1 < v2);
|
|
}
|
|
|
|
static void cr_sort_and_remove_overlap(CharRange *cr)
|
|
{
|
|
uint32_t start, end, start1, end1, i, j;
|
|
|
|
/* the resulting ranges are not necessarily sorted and may overlap */
|
|
rqsort(cr->points, cr->len / 2, sizeof(cr->points[0]) * 2, point_cmp, NULL);
|
|
j = 0;
|
|
for(i = 0; i < cr->len; ) {
|
|
start = cr->points[i];
|
|
end = cr->points[i + 1];
|
|
i += 2;
|
|
while (i < cr->len) {
|
|
start1 = cr->points[i];
|
|
end1 = cr->points[i + 1];
|
|
if (start1 > end) {
|
|
/* |------|
|
|
* |-------| */
|
|
break;
|
|
} else if (end1 <= end) {
|
|
/* |------|
|
|
* |--| */
|
|
i += 2;
|
|
} else {
|
|
/* |------|
|
|
* |-------| */
|
|
end = end1;
|
|
i += 2;
|
|
}
|
|
}
|
|
cr->points[j] = start;
|
|
cr->points[j + 1] = end;
|
|
j += 2;
|
|
}
|
|
cr->len = j;
|
|
}
|
|
|
|
/* canonicalize a character set using the JS regex case folding rules
|
|
(see lre_canonicalize()) */
|
|
int cr_regexp_canonicalize(CharRange *cr, BOOL is_unicode)
|
|
{
|
|
CharRange cr_inter, cr_mask, cr_result, cr_sub;
|
|
uint32_t v, code, len, i, idx, start, end, c, d_start, d_end, d;
|
|
|
|
cr_init(&cr_mask, cr->mem_opaque, cr->realloc_func);
|
|
cr_init(&cr_inter, cr->mem_opaque, cr->realloc_func);
|
|
cr_init(&cr_result, cr->mem_opaque, cr->realloc_func);
|
|
cr_init(&cr_sub, cr->mem_opaque, cr->realloc_func);
|
|
|
|
if (unicode_case1(&cr_mask, is_unicode ? CASE_F : CASE_U))
|
|
goto fail;
|
|
if (cr_op(&cr_inter, cr_mask.points, cr_mask.len, cr->points, cr->len, CR_OP_INTER))
|
|
goto fail;
|
|
|
|
if (cr_invert(&cr_mask))
|
|
goto fail;
|
|
if (cr_op(&cr_sub, cr_mask.points, cr_mask.len, cr->points, cr->len, CR_OP_INTER))
|
|
goto fail;
|
|
|
|
/* cr_inter = cr & cr_mask */
|
|
/* cr_sub = cr & ~cr_mask */
|
|
|
|
/* use the case conversion table to compute the result */
|
|
d_start = -1;
|
|
d_end = -1;
|
|
idx = 0;
|
|
v = case_conv_table1[idx];
|
|
code = v >> (32 - 17);
|
|
len = (v >> (32 - 17 - 7)) & 0x7f;
|
|
for(i = 0; i < cr_inter.len; i += 2) {
|
|
start = cr_inter.points[i];
|
|
end = cr_inter.points[i + 1];
|
|
|
|
for(c = start; c < end; c++) {
|
|
for(;;) {
|
|
if (c >= code && c < code + len)
|
|
break;
|
|
idx++;
|
|
assert(idx < countof(case_conv_table1));
|
|
v = case_conv_table1[idx];
|
|
code = v >> (32 - 17);
|
|
len = (v >> (32 - 17 - 7)) & 0x7f;
|
|
}
|
|
d = lre_case_folding_entry(c, idx, v, is_unicode);
|
|
/* try to merge with the current interval */
|
|
if (d_start == -1) {
|
|
d_start = d;
|
|
d_end = d + 1;
|
|
} else if (d_end == d) {
|
|
d_end++;
|
|
} else {
|
|
cr_add_interval(&cr_result, d_start, d_end);
|
|
d_start = d;
|
|
d_end = d + 1;
|
|
}
|
|
}
|
|
}
|
|
if (d_start != -1) {
|
|
if (cr_add_interval(&cr_result, d_start, d_end))
|
|
goto fail;
|
|
}
|
|
|
|
/* the resulting ranges are not necessarily sorted and may overlap */
|
|
cr_sort_and_remove_overlap(&cr_result);
|
|
|
|
/* or with the character not affected by the case folding */
|
|
cr->len = 0;
|
|
if (cr_op(cr, cr_result.points, cr_result.len, cr_sub.points, cr_sub.len, CR_OP_UNION))
|
|
goto fail;
|
|
|
|
cr_free(&cr_inter);
|
|
cr_free(&cr_mask);
|
|
cr_free(&cr_result);
|
|
cr_free(&cr_sub);
|
|
return 0;
|
|
fail:
|
|
cr_free(&cr_inter);
|
|
cr_free(&cr_mask);
|
|
cr_free(&cr_result);
|
|
cr_free(&cr_sub);
|
|
return -1;
|
|
}
|
|
|
|
typedef enum {
|
|
POP_GC,
|
|
POP_PROP,
|
|
POP_CASE,
|
|
POP_UNION,
|
|
POP_INTER,
|
|
POP_XOR,
|
|
POP_INVERT,
|
|
POP_END,
|
|
} PropOPEnum;
|
|
|
|
#define POP_STACK_LEN_MAX 4
|
|
|
|
static int unicode_prop_ops(CharRange *cr, ...)
|
|
{
|
|
va_list ap;
|
|
CharRange stack[POP_STACK_LEN_MAX];
|
|
int stack_len, op, ret, i;
|
|
uint32_t a;
|
|
|
|
va_start(ap, cr);
|
|
stack_len = 0;
|
|
for(;;) {
|
|
op = va_arg(ap, int);
|
|
switch(op) {
|
|
case POP_GC:
|
|
assert(stack_len < POP_STACK_LEN_MAX);
|
|
a = va_arg(ap, int);
|
|
cr_init(&stack[stack_len++], cr->mem_opaque, cr->realloc_func);
|
|
if (unicode_general_category1(&stack[stack_len - 1], a))
|
|
goto fail;
|
|
break;
|
|
case POP_PROP:
|
|
assert(stack_len < POP_STACK_LEN_MAX);
|
|
a = va_arg(ap, int);
|
|
cr_init(&stack[stack_len++], cr->mem_opaque, cr->realloc_func);
|
|
if (unicode_prop1(&stack[stack_len - 1], a))
|
|
goto fail;
|
|
break;
|
|
case POP_CASE:
|
|
assert(stack_len < POP_STACK_LEN_MAX);
|
|
a = va_arg(ap, int);
|
|
cr_init(&stack[stack_len++], cr->mem_opaque, cr->realloc_func);
|
|
if (unicode_case1(&stack[stack_len - 1], a))
|
|
goto fail;
|
|
break;
|
|
case POP_UNION:
|
|
case POP_INTER:
|
|
case POP_XOR:
|
|
{
|
|
CharRange *cr1, *cr2, *cr3;
|
|
assert(stack_len >= 2);
|
|
assert(stack_len < POP_STACK_LEN_MAX);
|
|
cr1 = &stack[stack_len - 2];
|
|
cr2 = &stack[stack_len - 1];
|
|
cr3 = &stack[stack_len++];
|
|
cr_init(cr3, cr->mem_opaque, cr->realloc_func);
|
|
if (cr_op(cr3, cr1->points, cr1->len,
|
|
cr2->points, cr2->len, op - POP_UNION + CR_OP_UNION))
|
|
goto fail;
|
|
cr_free(cr1);
|
|
cr_free(cr2);
|
|
*cr1 = *cr3;
|
|
stack_len -= 2;
|
|
}
|
|
break;
|
|
case POP_INVERT:
|
|
assert(stack_len >= 1);
|
|
if (cr_invert(&stack[stack_len - 1]))
|
|
goto fail;
|
|
break;
|
|
case POP_END:
|
|
goto done;
|
|
default:
|
|
abort();
|
|
}
|
|
}
|
|
done:
|
|
assert(stack_len == 1);
|
|
ret = cr_copy(cr, &stack[0]);
|
|
cr_free(&stack[0]);
|
|
return ret;
|
|
fail:
|
|
for(i = 0; i < stack_len; i++)
|
|
cr_free(&stack[i]);
|
|
return -1;
|
|
}
|
|
|
|
static const uint32_t unicode_gc_mask_table[] = {
|
|
M(Lu) | M(Ll) | M(Lt), /* LC */
|
|
M(Lu) | M(Ll) | M(Lt) | M(Lm) | M(Lo), /* L */
|
|
M(Mn) | M(Mc) | M(Me), /* M */
|
|
M(Nd) | M(Nl) | M(No), /* N */
|
|
M(Sm) | M(Sc) | M(Sk) | M(So), /* S */
|
|
M(Pc) | M(Pd) | M(Ps) | M(Pe) | M(Pi) | M(Pf) | M(Po), /* P */
|
|
M(Zs) | M(Zl) | M(Zp), /* Z */
|
|
M(Cc) | M(Cf) | M(Cs) | M(Co) | M(Cn), /* C */
|
|
};
|
|
|
|
/* 'cr' must be initialized and empty. Return 0 if OK, -1 if error, -2
|
|
if not found */
|
|
int unicode_general_category(CharRange *cr, const char *gc_name)
|
|
{
|
|
int gc_idx;
|
|
uint32_t gc_mask;
|
|
|
|
gc_idx = unicode_find_name(unicode_gc_name_table, gc_name);
|
|
if (gc_idx < 0)
|
|
return -2;
|
|
if (gc_idx <= UNICODE_GC_Co) {
|
|
gc_mask = (uint64_t)1 << gc_idx;
|
|
} else {
|
|
gc_mask = unicode_gc_mask_table[gc_idx - UNICODE_GC_LC];
|
|
}
|
|
return unicode_general_category1(cr, gc_mask);
|
|
}
|
|
|
|
|
|
/* 'cr' must be initialized and empty. Return 0 if OK, -1 if error, -2
|
|
if not found */
|
|
int unicode_prop(CharRange *cr, const char *prop_name)
|
|
{
|
|
int prop_idx, ret;
|
|
|
|
prop_idx = unicode_find_name(unicode_prop_name_table, prop_name);
|
|
if (prop_idx < 0)
|
|
return -2;
|
|
prop_idx += UNICODE_PROP_ASCII_Hex_Digit;
|
|
|
|
ret = 0;
|
|
switch(prop_idx) {
|
|
case UNICODE_PROP_ASCII:
|
|
if (cr_add_interval(cr, 0x00, 0x7f + 1))
|
|
return -1;
|
|
break;
|
|
case UNICODE_PROP_Any:
|
|
if (cr_add_interval(cr, 0x00000, 0x10ffff + 1))
|
|
return -1;
|
|
break;
|
|
case UNICODE_PROP_Assigned:
|
|
ret = unicode_prop_ops(cr,
|
|
POP_GC, M(Cn),
|
|
POP_INVERT,
|
|
POP_END);
|
|
break;
|
|
case UNICODE_PROP_Math:
|
|
ret = unicode_prop_ops(cr,
|
|
POP_GC, M(Sm),
|
|
POP_PROP, UNICODE_PROP_Other_Math,
|
|
POP_UNION,
|
|
POP_END);
|
|
break;
|
|
case UNICODE_PROP_Lowercase:
|
|
ret = unicode_prop_ops(cr,
|
|
POP_GC, M(Ll),
|
|
POP_PROP, UNICODE_PROP_Other_Lowercase,
|
|
POP_UNION,
|
|
POP_END);
|
|
break;
|
|
case UNICODE_PROP_Uppercase:
|
|
ret = unicode_prop_ops(cr,
|
|
POP_GC, M(Lu),
|
|
POP_PROP, UNICODE_PROP_Other_Uppercase,
|
|
POP_UNION,
|
|
POP_END);
|
|
break;
|
|
case UNICODE_PROP_Cased:
|
|
ret = unicode_prop_ops(cr,
|
|
POP_GC, M(Lu) | M(Ll) | M(Lt),
|
|
POP_PROP, UNICODE_PROP_Other_Uppercase,
|
|
POP_UNION,
|
|
POP_PROP, UNICODE_PROP_Other_Lowercase,
|
|
POP_UNION,
|
|
POP_END);
|
|
break;
|
|
case UNICODE_PROP_Alphabetic:
|
|
ret = unicode_prop_ops(cr,
|
|
POP_GC, M(Lu) | M(Ll) | M(Lt) | M(Lm) | M(Lo) | M(Nl),
|
|
POP_PROP, UNICODE_PROP_Other_Uppercase,
|
|
POP_UNION,
|
|
POP_PROP, UNICODE_PROP_Other_Lowercase,
|
|
POP_UNION,
|
|
POP_PROP, UNICODE_PROP_Other_Alphabetic,
|
|
POP_UNION,
|
|
POP_END);
|
|
break;
|
|
case UNICODE_PROP_Grapheme_Base:
|
|
ret = unicode_prop_ops(cr,
|
|
POP_GC, M(Cc) | M(Cf) | M(Cs) | M(Co) | M(Cn) | M(Zl) | M(Zp) | M(Me) | M(Mn),
|
|
POP_PROP, UNICODE_PROP_Other_Grapheme_Extend,
|
|
POP_UNION,
|
|
POP_INVERT,
|
|
POP_END);
|
|
break;
|
|
case UNICODE_PROP_Grapheme_Extend:
|
|
ret = unicode_prop_ops(cr,
|
|
POP_GC, M(Me) | M(Mn),
|
|
POP_PROP, UNICODE_PROP_Other_Grapheme_Extend,
|
|
POP_UNION,
|
|
POP_END);
|
|
break;
|
|
case UNICODE_PROP_XID_Start:
|
|
ret = unicode_prop_ops(cr,
|
|
POP_GC, M(Lu) | M(Ll) | M(Lt) | M(Lm) | M(Lo) | M(Nl),
|
|
POP_PROP, UNICODE_PROP_Other_ID_Start,
|
|
POP_UNION,
|
|
POP_PROP, UNICODE_PROP_Pattern_Syntax,
|
|
POP_PROP, UNICODE_PROP_Pattern_White_Space,
|
|
POP_UNION,
|
|
POP_PROP, UNICODE_PROP_XID_Start1,
|
|
POP_UNION,
|
|
POP_INVERT,
|
|
POP_INTER,
|
|
POP_END);
|
|
break;
|
|
case UNICODE_PROP_XID_Continue:
|
|
ret = unicode_prop_ops(cr,
|
|
POP_GC, M(Lu) | M(Ll) | M(Lt) | M(Lm) | M(Lo) | M(Nl) |
|
|
M(Mn) | M(Mc) | M(Nd) | M(Pc),
|
|
POP_PROP, UNICODE_PROP_Other_ID_Start,
|
|
POP_UNION,
|
|
POP_PROP, UNICODE_PROP_Other_ID_Continue,
|
|
POP_UNION,
|
|
POP_PROP, UNICODE_PROP_Pattern_Syntax,
|
|
POP_PROP, UNICODE_PROP_Pattern_White_Space,
|
|
POP_UNION,
|
|
POP_PROP, UNICODE_PROP_XID_Continue1,
|
|
POP_UNION,
|
|
POP_INVERT,
|
|
POP_INTER,
|
|
POP_END);
|
|
break;
|
|
case UNICODE_PROP_Changes_When_Uppercased:
|
|
ret = unicode_case1(cr, CASE_U);
|
|
break;
|
|
case UNICODE_PROP_Changes_When_Lowercased:
|
|
ret = unicode_case1(cr, CASE_L);
|
|
break;
|
|
case UNICODE_PROP_Changes_When_Casemapped:
|
|
ret = unicode_case1(cr, CASE_U | CASE_L | CASE_F);
|
|
break;
|
|
case UNICODE_PROP_Changes_When_Titlecased:
|
|
ret = unicode_prop_ops(cr,
|
|
POP_CASE, CASE_U,
|
|
POP_PROP, UNICODE_PROP_Changes_When_Titlecased1,
|
|
POP_XOR,
|
|
POP_END);
|
|
break;
|
|
case UNICODE_PROP_Changes_When_Casefolded:
|
|
ret = unicode_prop_ops(cr,
|
|
POP_CASE, CASE_F,
|
|
POP_PROP, UNICODE_PROP_Changes_When_Casefolded1,
|
|
POP_XOR,
|
|
POP_END);
|
|
break;
|
|
case UNICODE_PROP_Changes_When_NFKC_Casefolded:
|
|
ret = unicode_prop_ops(cr,
|
|
POP_CASE, CASE_F,
|
|
POP_PROP, UNICODE_PROP_Changes_When_NFKC_Casefolded1,
|
|
POP_XOR,
|
|
POP_END);
|
|
break;
|
|
#if 0
|
|
case UNICODE_PROP_ID_Start:
|
|
ret = unicode_prop_ops(cr,
|
|
POP_GC, M(Lu) | M(Ll) | M(Lt) | M(Lm) | M(Lo) | M(Nl),
|
|
POP_PROP, UNICODE_PROP_Other_ID_Start,
|
|
POP_UNION,
|
|
POP_PROP, UNICODE_PROP_Pattern_Syntax,
|
|
POP_PROP, UNICODE_PROP_Pattern_White_Space,
|
|
POP_UNION,
|
|
POP_INVERT,
|
|
POP_INTER,
|
|
POP_END);
|
|
break;
|
|
case UNICODE_PROP_ID_Continue:
|
|
ret = unicode_prop_ops(cr,
|
|
POP_GC, M(Lu) | M(Ll) | M(Lt) | M(Lm) | M(Lo) | M(Nl) |
|
|
M(Mn) | M(Mc) | M(Nd) | M(Pc),
|
|
POP_PROP, UNICODE_PROP_Other_ID_Start,
|
|
POP_UNION,
|
|
POP_PROP, UNICODE_PROP_Other_ID_Continue,
|
|
POP_UNION,
|
|
POP_PROP, UNICODE_PROP_Pattern_Syntax,
|
|
POP_PROP, UNICODE_PROP_Pattern_White_Space,
|
|
POP_UNION,
|
|
POP_INVERT,
|
|
POP_INTER,
|
|
POP_END);
|
|
break;
|
|
case UNICODE_PROP_Case_Ignorable:
|
|
ret = unicode_prop_ops(cr,
|
|
POP_GC, M(Mn) | M(Cf) | M(Lm) | M(Sk),
|
|
POP_PROP, UNICODE_PROP_Case_Ignorable1,
|
|
POP_XOR,
|
|
POP_END);
|
|
break;
|
|
#else
|
|
/* we use the existing tables */
|
|
case UNICODE_PROP_ID_Continue:
|
|
ret = unicode_prop_ops(cr,
|
|
POP_PROP, UNICODE_PROP_ID_Start,
|
|
POP_PROP, UNICODE_PROP_ID_Continue1,
|
|
POP_XOR,
|
|
POP_END);
|
|
break;
|
|
#endif
|
|
default:
|
|
if (prop_idx >= countof(unicode_prop_table))
|
|
return -2;
|
|
ret = unicode_prop1(cr, prop_idx);
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
#endif /* CONFIG_ALL_UNICODE */
|
|
|
|
/*---- lre codepoint categorizing functions ----*/
|
|
|
|
#define S UNICODE_C_SPACE
|
|
#define D UNICODE_C_DIGIT
|
|
#define X UNICODE_C_XDIGIT
|
|
#define U UNICODE_C_UPPER
|
|
#define L UNICODE_C_LOWER
|
|
#define _ UNICODE_C_UNDER
|
|
#define d UNICODE_C_DOLLAR
|
|
|
|
uint8_t const lre_ctype_bits[256] = {
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, S, S, S, S, S, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
|
|
S, 0, 0, 0, d, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
X|D, X|D, X|D, X|D, X|D, X|D, X|D, X|D,
|
|
X|D, X|D, 0, 0, 0, 0, 0, 0,
|
|
|
|
0, X|U, X|U, X|U, X|U, X|U, X|U, U,
|
|
U, U, U, U, U, U, U, U,
|
|
U, U, U, U, U, U, U, U,
|
|
U, U, U, 0, 0, 0, 0, _,
|
|
|
|
0, X|L, X|L, X|L, X|L, X|L, X|L, L,
|
|
L, L, L, L, L, L, L, L,
|
|
L, L, L, L, L, L, L, L,
|
|
L, L, L, 0, 0, 0, 0, 0,
|
|
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
|
|
S, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
};
|
|
|
|
#undef S
|
|
#undef D
|
|
#undef X
|
|
#undef U
|
|
#undef L
|
|
#undef _
|
|
#undef d
|
|
|
|
/* code point ranges for Zs,Zl or Zp property */
|
|
static const uint16_t char_range_s[] = {
|
|
10,
|
|
0x0009, 0x000D + 1,
|
|
0x0020, 0x0020 + 1,
|
|
0x00A0, 0x00A0 + 1,
|
|
0x1680, 0x1680 + 1,
|
|
0x2000, 0x200A + 1,
|
|
/* 2028;LINE SEPARATOR;Zl;0;WS;;;;;N;;;;; */
|
|
/* 2029;PARAGRAPH SEPARATOR;Zp;0;B;;;;;N;;;;; */
|
|
0x2028, 0x2029 + 1,
|
|
0x202F, 0x202F + 1,
|
|
0x205F, 0x205F + 1,
|
|
0x3000, 0x3000 + 1,
|
|
/* FEFF;ZERO WIDTH NO-BREAK SPACE;Cf;0;BN;;;;;N;BYTE ORDER MARK;;;; */
|
|
0xFEFF, 0xFEFF + 1,
|
|
};
|
|
|
|
BOOL lre_is_space_non_ascii(uint32_t c)
|
|
{
|
|
size_t i, n;
|
|
|
|
n = countof(char_range_s);
|
|
for(i = 5; i < n; i += 2) {
|
|
uint32_t low = char_range_s[i];
|
|
uint32_t high = char_range_s[i + 1];
|
|
if (c < low)
|
|
return FALSE;
|
|
if (c < high)
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|