1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <i18nutil/casefolding.hxx>
#include "casefolding_data.h"
#include <i18nutil/oneToOneMapping.hxx>
#include <i18nutil/widthfolding.hxx>
#include <i18nutil/transliteration.hxx>
#include <com/sun/star/lang/Locale.hpp>
#include <com/sun/star/uno/RuntimeException.hpp>
#include <rtl/character.hxx>
using namespace com::sun::star::lang;
using namespace com::sun::star::uno;
namespace i18nutil {
static const Mapping mapping_03a3[] = {{0, 1, {0x03c2, 0, 0}},{0, 1, {0x03c3, 0, 0}}};
static const Mapping mapping_0307[] = {{0, 0, {0, 0, 0}},{0, 1, {0x0307, 0, 0}}};
static const Mapping mapping_004a[] = {{0, 2, {0x006a, 0x0307, 0}},{0, 1, {0x006a, 0, 0}}};
static const Mapping mapping_012e[] = {{0, 2, {0x012f, 0x0307, 0}},{0, 1, {0x012f, 0, 0}}};
static const Mapping mapping_00cc[] = {{0, 3, {0x0069, 0x0307, 0x0300}},{0, 1, {0x00ec, 0, 0}}};
static const Mapping mapping_00cd[] = {{0, 3, {0x0069, 0x0307, 0x0301}},{0, 1, {0x00ed, 0, 0}}};
static const Mapping mapping_0128[] = {{0, 3, {0x0069, 0x0307, 0x0303}},{0, 1, {0x0129, 0, 0}}};
static const Mapping mapping_0049[] = {{0, 2, {0x0069, 0x0307, 0}},{0, 1, {0x0131, 0, 0}},{0, 1, {0x0069, 0, 0}}};
static const Mapping mapping_0069[] = {{0, 1, {0x0130, 0, 0}},{0, 1, {0x0049, 0, 0}}};
static const Mapping mapping_0130[] = {{0, 1, {0x0069, 0, 0}},{0, 1, {0x0130, 0, 0}}};
#define langIs(lang) (aLocale.Language == lang)
// only check simple case, there is more complicated case need to be checked.
#define type_i(ch) ((ch) == 0x0069 || (ch) == 0x006a)
static bool cased_letter(sal_Unicode ch)
{
int msb = ch >> 8;
int cmi = CaseMappingIndex[msb];
if (cmi < 0)
return false;
int cmv_idx = (cmi << 8) + (ch & 0xff);
return bool(static_cast<MappingType>(CaseMappingValue[cmv_idx].type) & MappingType::CasedLetterMask);
}
// for Lithuanian, condition to make explicit dot above when lowercasing capital I's and J's
// whenever there are more accents above.
#define accent_above(ch) (((ch) >= 0x0300 && (ch) <= 0x0314) || ((ch) >= 0x033D && (ch) <= 0x0344) || (ch) == 0x0346 || ((ch) >= 0x034A && (ch) <= 0x034C))
const Mapping& casefolding::getConditionalValue(const sal_Unicode* str, sal_Int32 pos, sal_Int32 len, Locale const & aLocale, MappingType nMappingType)
{
switch(str[pos]) {
case 0x03a3:
// final_sigma (not followed by cased and preceded by cased character)
// DOES NOT check ignorable sequence yet (more complicated implementation).
return !(pos < len && cased_letter(str[pos+1])) && (pos > 0 && cased_letter(str[pos-1])) ?
mapping_03a3[0] : mapping_03a3[1];
case 0x0307:
return (((nMappingType == MappingType::LowerToUpper && langIs("lt")) ||
(nMappingType == MappingType::UpperToLower && (langIs("tr") || langIs("az")))) &&
(pos > 0 && type_i(str[pos-1]))) ? // after_i
mapping_0307[0] : mapping_0307[1];
case 0x0130:
return (langIs("tr") || langIs("az")) ? mapping_0130[0] : mapping_0130[1];
case 0x0069:
return (langIs("tr") || langIs("az")) ? mapping_0069[0] : mapping_0069[1];
case 0x0049: return langIs("lt") && pos > len && accent_above(str[pos+1]) ? mapping_0049[0] :
(langIs("tr") || langIs("az")) ? mapping_0049[1] : mapping_0049[2];
case 0x004a: return langIs("lt") && pos > len && accent_above(str[pos+1]) ? mapping_004a[0] : mapping_004a[1];
case 0x012e: return langIs("lt") && pos > len && accent_above(str[pos+1]) ? mapping_012e[0] : mapping_012e[1];
case 0x00cc: return langIs("lt") ? mapping_00cc[0] : mapping_00cc[1];
case 0x00cd: return langIs("lt") ? mapping_00cd[0] : mapping_00cd[1];
case 0x0128: return langIs("lt") ? mapping_0128[0] : mapping_0128[1];
}
// Should not come here
throw RuntimeException();
}
Mapping casefolding::getValue(const sal_Unicode* str, sal_Int32 pos, sal_Int32 len, Locale const & aLocale, MappingType nMappingType)
{
Mapping dummy = { 0, 1, { str[pos], 0, 0 } };
sal_uInt32 c;
if (pos > 0 && rtl::isHighSurrogate(str[pos-1]) && rtl::isLowSurrogate(str[pos])) {
c = rtl::combineSurrogates(str[pos-1], str[pos]);
if (c >= SAL_N_ELEMENTS(CaseMappingIndex) * 256)
return dummy;
} else {
c = str[pos];
}
sal_Int16 address = CaseMappingIndex[c >> 8];
if (address >= 0) {
address = (address << 8) + (c & 0xFF);
if (static_cast<MappingType>(CaseMappingValue[address].type) & nMappingType) {
MappingType type = static_cast<MappingType>(CaseMappingValue[address].type);
if (type & MappingType::NotValue) {
if (CaseMappingValue[address].value == 0)
return getConditionalValue(str, pos, len, aLocale, nMappingType);
else {
for (int map = CaseMappingValue[address].value;
map < CaseMappingValue[address].value + MaxCaseMappingExtras; map++) {
if (static_cast<MappingType>(CaseMappingExtra[map].type) & nMappingType) {
if (static_cast<MappingType>(CaseMappingExtra[map].type) & MappingType::NotValue)
return getConditionalValue(str, pos, len, aLocale, nMappingType);
else
return CaseMappingExtra[map];
}
}
// Should not come here
throw RuntimeException();
}
} else
dummy.map[0] = CaseMappingValue[address].value;
}
}
return dummy;
}
static bool
is_ja_voice_sound_mark(sal_Unicode& current, sal_Unicode next)
{
sal_Unicode c = 0;
if ((next == 0x3099 || next == 0x309a) && ( (c = widthfolding::getCompositionChar(current, next)) != 0 ))
current = c;
return c != 0;
}
sal_Unicode casefolding::getNextChar(const sal_Unicode *str, sal_Int32& idx, sal_Int32 len, MappingElement& e, Locale const & aLocale, MappingType nMappingType, TransliterationFlags moduleLoaded)
{
if( idx >= len )
{
e = MappingElement();
return 0;
}
sal_Unicode c;
if (moduleLoaded & TransliterationFlags::IGNORE_CASE) {
if( e.current >= e.element.nmap ) {
e.element = getValue(str, idx++, len, aLocale, nMappingType);
e.current = 0;
}
c = e.element.map[e.current++];
} else {
c = *(str + idx++);
}
if (moduleLoaded & TransliterationFlags::IGNORE_KANA) {
if ((0x3040 <= c && c <= 0x3094) || (0x309d <= c && c <= 0x309f))
c += 0x60;
}
// composition: KA + voice-mark --> GA. see halfwidthToFullwidth.cxx for detail
if (moduleLoaded & TransliterationFlags::IGNORE_WIDTH) {
static oneToOneMapping& half2fullTable = widthfolding::gethalf2fullTable();
c = half2fullTable[c];
if (0x3040 <= c && c <= 0x30ff && idx < len &&
is_ja_voice_sound_mark(c, half2fullTable[*(str + idx)]))
idx++;
}
return c;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
