1 // Copyright (C) 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
3 /*
4 *******************************************************************************
5 * Copyright (C) 2011, International Business Machines
6 * Corporation and others. All Rights Reserved.
7 *******************************************************************************
8 * file name: ustr_titlecase_brkiter.cpp
9 * encoding: US-ASCII
10 * tab size: 8 (not used)
11 * indentation:4
12 *
13 * created on: 2011may30
14 * created by: Markus W. Scherer
15 *
16 * Titlecasing functions that are based on BreakIterator
17 * were moved here to break dependency cycles among parts of the common library.
18 */
19
20 #include "unicode/utypes.h"
21
22 #if !UCONFIG_NO_BREAK_ITERATION
23
24 #include "unicode/brkiter.h"
25 #include "unicode/ubrk.h"
26 #include "unicode/ucasemap.h"
27 #include "cmemory.h"
28 #include "ucase.h"
29 #include "ustr_imp.h"
30
31 /* functions available in the common library (for unistr_case.cpp) */
32
33 /*
34 * Set parameters on an empty UCaseMap, for UCaseMap-less API functions.
35 * Do this fast because it is called with every function call.
36 * Duplicate of the same function in ustrcase.cpp, to keep it inline.
37 */
38 static inline void
setTempCaseMap(UCaseMap * csm,const char * locale)39 setTempCaseMap(UCaseMap *csm, const char *locale) {
40 if(csm->csp==NULL) {
41 csm->csp=ucase_getSingleton();
42 }
43 if(locale!=NULL && locale[0]==0) {
44 csm->locale[0]=0;
45 } else {
46 ustrcase_setTempCaseMapLocale(csm, locale);
47 }
48 }
49
50 /* public API functions */
51
52 U_CAPI int32_t U_EXPORT2
u_strToTitle(UChar * dest,int32_t destCapacity,const UChar * src,int32_t srcLength,UBreakIterator * titleIter,const char * locale,UErrorCode * pErrorCode)53 u_strToTitle(UChar *dest, int32_t destCapacity,
54 const UChar *src, int32_t srcLength,
55 UBreakIterator *titleIter,
56 const char *locale,
57 UErrorCode *pErrorCode) {
58 UCaseMap csm=UCASEMAP_INITIALIZER;
59 setTempCaseMap(&csm, locale);
60 if(titleIter!=NULL) {
61 ubrk_setText(csm.iter=titleIter, src, srcLength, pErrorCode);
62 } else {
63 csm.iter=ubrk_open(UBRK_WORD, csm.locale, src, srcLength, pErrorCode);
64 }
65 int32_t length=ustrcase_map(
66 &csm,
67 dest, destCapacity,
68 src, srcLength,
69 ustrcase_internalToTitle, pErrorCode);
70 if(titleIter==NULL && csm.iter!=NULL) {
71 ubrk_close(csm.iter);
72 }
73 return length;
74 }
75
76 U_CAPI int32_t U_EXPORT2
ucasemap_toTitle(UCaseMap * csm,UChar * dest,int32_t destCapacity,const UChar * src,int32_t srcLength,UErrorCode * pErrorCode)77 ucasemap_toTitle(UCaseMap *csm,
78 UChar *dest, int32_t destCapacity,
79 const UChar *src, int32_t srcLength,
80 UErrorCode *pErrorCode) {
81 if(csm->iter!=NULL) {
82 ubrk_setText(csm->iter, src, srcLength, pErrorCode);
83 } else {
84 csm->iter=ubrk_open(UBRK_WORD, csm->locale, src, srcLength, pErrorCode);
85 }
86 return ustrcase_map(
87 csm,
88 dest, destCapacity,
89 src, srcLength,
90 ustrcase_internalToTitle, pErrorCode);
91 }
92
93 #endif // !UCONFIG_NO_BREAK_ITERATION
94