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
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
* Copyright (C) 2011, International Business Machines
* Corporation and others. All Rights Reserved.
*******************************************************************************
* file name: ustr_titlecase_brkiter.cpp
* encoding: UTF-8
* tab size: 8 (not used)
* indentation:4
*
* created on: 2011may30
* created by: Markus W. Scherer
*
* Titlecasing functions that are based on BreakIterator
* were moved here to break dependency cycles among parts of the common library.
*/
#include "unicode/utypes.h"
#if !UCONFIG_NO_BREAK_ITERATION
#include "unicode/brkiter.h"
#include "unicode/casemap.h"
#include "unicode/chariter.h"
#include "unicode/localpointer.h"
#include "unicode/ubrk.h"
#include "unicode/ucasemap.h"
#include "unicode/utext.h"
#include "cmemory.h"
#include "uassert.h"
#include "ucase.h"
#include "ucasemap_imp.h"
U_NAMESPACE_BEGIN
/**
* Whole-string BreakIterator.
* Titlecasing only calls setText(), first(), and next().
* We implement the rest only to satisfy the abstract interface.
*/
class WholeStringBreakIterator : public BreakIterator {
public:
WholeStringBreakIterator() : BreakIterator(), length(0) {}
~WholeStringBreakIterator() override;
bool operator==(const BreakIterator&) const override;
WholeStringBreakIterator *clone() const override;
static UClassID U_EXPORT2 getStaticClassID();
UClassID getDynamicClassID() const override;
CharacterIterator &getText() const override;
UText *getUText(UText *fillIn, UErrorCode &errorCode) const override;
void setText(const UnicodeString &text) override;
void setText(UText *text, UErrorCode &errorCode) override;
void adoptText(CharacterIterator* it) override;
int32_t first() override;
int32_t last() override;
int32_t previous() override;
int32_t next() override;
int32_t current() const override;
int32_t following(int32_t offset) override;
int32_t preceding(int32_t offset) override;
UBool isBoundary(int32_t offset) override;
int32_t next(int32_t n) override;
WholeStringBreakIterator *createBufferClone(void *stackBuffer, int32_t &BufferSize,
UErrorCode &errorCode) override;
WholeStringBreakIterator &refreshInputText(UText *input, UErrorCode &errorCode) override;
private:
int32_t length;
};
UOBJECT_DEFINE_RTTI_IMPLEMENTATION(WholeStringBreakIterator)
WholeStringBreakIterator::~WholeStringBreakIterator() {}
bool WholeStringBreakIterator::operator==(const BreakIterator&) const { return false; }
WholeStringBreakIterator *WholeStringBreakIterator::clone() const { return nullptr; }
CharacterIterator &WholeStringBreakIterator::getText() const {
UPRV_UNREACHABLE_EXIT; // really should not be called
}
UText *WholeStringBreakIterator::getUText(UText * /*fillIn*/, UErrorCode &errorCode) const {
if (U_SUCCESS(errorCode)) {
errorCode = U_UNSUPPORTED_ERROR;
}
return nullptr;
}
void WholeStringBreakIterator::setText(const UnicodeString &text) {
length = text.length();
}
void WholeStringBreakIterator::setText(UText *text, UErrorCode &errorCode) {
if (U_SUCCESS(errorCode)) {
int64_t length64 = utext_nativeLength(text);
if (length64 <= INT32_MAX) {
length = (int32_t)length64;
} else {
errorCode = U_INDEX_OUTOFBOUNDS_ERROR;
}
}
}
void WholeStringBreakIterator::adoptText(CharacterIterator*) {
UPRV_UNREACHABLE_EXIT; // should not be called
}
int32_t WholeStringBreakIterator::first() { return 0; }
int32_t WholeStringBreakIterator::last() { return length; }
int32_t WholeStringBreakIterator::previous() { return 0; }
int32_t WholeStringBreakIterator::next() { return length; }
int32_t WholeStringBreakIterator::current() const { return 0; }
int32_t WholeStringBreakIterator::following(int32_t /*offset*/) { return length; }
int32_t WholeStringBreakIterator::preceding(int32_t /*offset*/) { return 0; }
UBool WholeStringBreakIterator::isBoundary(int32_t /*offset*/) { return false; }
int32_t WholeStringBreakIterator::next(int32_t /*n*/) { return length; }
WholeStringBreakIterator *WholeStringBreakIterator::createBufferClone(
void * /*stackBuffer*/, int32_t & /*BufferSize*/, UErrorCode &errorCode) {
if (U_SUCCESS(errorCode)) {
errorCode = U_UNSUPPORTED_ERROR;
}
return nullptr;
}
WholeStringBreakIterator &WholeStringBreakIterator::refreshInputText(
UText * /*input*/, UErrorCode &errorCode) {
if (U_SUCCESS(errorCode)) {
errorCode = U_UNSUPPORTED_ERROR;
}
return *this;
}
U_CFUNC
BreakIterator *ustrcase_getTitleBreakIterator(
const Locale *locale, const char *locID, uint32_t options, BreakIterator *iter,
LocalPointer<BreakIterator> &ownedIter, UErrorCode &errorCode) {
if (U_FAILURE(errorCode)) { return nullptr; }
options &= U_TITLECASE_ITERATOR_MASK;
if (options != 0 && iter != nullptr) {
errorCode = U_ILLEGAL_ARGUMENT_ERROR;
return nullptr;
}
if (iter == nullptr) {
switch (options) {
case 0:
iter = BreakIterator::createWordInstance(
locale != nullptr ? *locale : Locale(locID), errorCode);
break;
case U_TITLECASE_WHOLE_STRING:
iter = new WholeStringBreakIterator();
if (iter == nullptr) {
errorCode = U_MEMORY_ALLOCATION_ERROR;
}
break;
case U_TITLECASE_SENTENCES:
iter = BreakIterator::createSentenceInstance(
locale != nullptr ? *locale : Locale(locID), errorCode);
break;
default:
errorCode = U_ILLEGAL_ARGUMENT_ERROR;
break;
}
ownedIter.adoptInstead(iter);
}
return iter;
}
int32_t CaseMap::toTitle(
const char *locale, uint32_t options, BreakIterator *iter,
const char16_t *src, int32_t srcLength,
char16_t *dest, int32_t destCapacity, Edits *edits,
UErrorCode &errorCode) {
LocalPointer<BreakIterator> ownedIter;
iter = ustrcase_getTitleBreakIterator(nullptr, locale, options, iter, ownedIter, errorCode);
if(iter==nullptr) {
return 0;
}
UnicodeString s(srcLength<0, src, srcLength);
iter->setText(s);
return ustrcase_map(
ustrcase_getCaseLocale(locale), options, iter,
dest, destCapacity,
src, srcLength,
ustrcase_internalToTitle, edits, errorCode);
}
U_NAMESPACE_END
U_NAMESPACE_USE
U_CAPI int32_t U_EXPORT2
u_strToTitle(char16_t *dest, int32_t destCapacity,
const char16_t *src, int32_t srcLength,
UBreakIterator *titleIter,
const char *locale,
UErrorCode *pErrorCode) {
LocalPointer<BreakIterator> ownedIter;
BreakIterator *iter = ustrcase_getTitleBreakIterator(
nullptr, locale, 0, reinterpret_cast<BreakIterator *>(titleIter),
ownedIter, *pErrorCode);
if (iter == nullptr) {
return 0;
}
UnicodeString s(srcLength<0, src, srcLength);
iter->setText(s);
return ustrcase_mapWithOverlap(
ustrcase_getCaseLocale(locale), 0, iter,
dest, destCapacity,
src, srcLength,
ustrcase_internalToTitle, *pErrorCode);
}
U_CAPI int32_t U_EXPORT2
ucasemap_toTitle(UCaseMap *csm,
char16_t *dest, int32_t destCapacity,
const char16_t *src, int32_t srcLength,
UErrorCode *pErrorCode) {
if (U_FAILURE(*pErrorCode)) {
return 0;
}
if (csm->iter == nullptr) {
LocalPointer<BreakIterator> ownedIter;
BreakIterator *iter = ustrcase_getTitleBreakIterator(
nullptr, csm->locale, csm->options, nullptr, ownedIter, *pErrorCode);
if (iter == nullptr) {
return 0;
}
csm->iter = ownedIter.orphan();
}
UnicodeString s(srcLength<0, src, srcLength);
csm->iter->setText(s);
return ustrcase_map(
csm->caseLocale, csm->options, csm->iter,
dest, destCapacity,
src, srcLength,
ustrcase_internalToTitle, nullptr, *pErrorCode);
}
#endif // !UCONFIG_NO_BREAK_ITERATION
|
