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