michael@0: /*
michael@0: *******************************************************************************
michael@0: *   Copyright (C) 2011, International Business Machines
michael@0: *   Corporation and others.  All Rights Reserved.
michael@0: *******************************************************************************
michael@0: *   file name:  ustr_titlecase_brkiter.cpp
michael@0: *   encoding:   US-ASCII
michael@0: *   tab size:   8 (not used)
michael@0: *   indentation:4
michael@0: *
michael@0: *   created on: 2011may30
michael@0: *   created by: Markus W. Scherer
michael@0: *
michael@0: *   Titlecasing functions that are based on BreakIterator
michael@0: *   were moved here to break dependency cycles among parts of the common library.
michael@0: */
michael@0: 
michael@0: #include "unicode/utypes.h"
michael@0: 
michael@0: #if !UCONFIG_NO_BREAK_ITERATION
michael@0: 
michael@0: #include "unicode/brkiter.h"
michael@0: #include "unicode/ubrk.h"
michael@0: #include "unicode/ucasemap.h"
michael@0: #include "cmemory.h"
michael@0: #include "ucase.h"
michael@0: #include "ustr_imp.h"
michael@0: 
michael@0: /* functions available in the common library (for unistr_case.cpp) */
michael@0: 
michael@0: /*
michael@0:  * Set parameters on an empty UCaseMap, for UCaseMap-less API functions.
michael@0:  * Do this fast because it is called with every function call.
michael@0:  * Duplicate of the same function in ustrcase.cpp, to keep it inline.
michael@0:  */
michael@0: static inline void
michael@0: setTempCaseMap(UCaseMap *csm, const char *locale) {
michael@0:     if(csm->csp==NULL) {
michael@0:         csm->csp=ucase_getSingleton();
michael@0:     }
michael@0:     if(locale!=NULL && locale[0]==0) {
michael@0:         csm->locale[0]=0;
michael@0:     } else {
michael@0:         ustrcase_setTempCaseMapLocale(csm, locale);
michael@0:     }
michael@0: }
michael@0: 
michael@0: /* public API functions */
michael@0: 
michael@0: U_CAPI int32_t U_EXPORT2
michael@0: u_strToTitle(UChar *dest, int32_t destCapacity,
michael@0:              const UChar *src, int32_t srcLength,
michael@0:              UBreakIterator *titleIter,
michael@0:              const char *locale,
michael@0:              UErrorCode *pErrorCode) {
michael@0:     UCaseMap csm=UCASEMAP_INITIALIZER;
michael@0:     setTempCaseMap(&csm, locale);
michael@0:     if(titleIter!=NULL) {
michael@0:         ubrk_setText(csm.iter=titleIter, src, srcLength, pErrorCode);
michael@0:     } else {
michael@0:         csm.iter=ubrk_open(UBRK_WORD, csm.locale, src, srcLength, pErrorCode);
michael@0:     }
michael@0:     int32_t length=ustrcase_map(
michael@0:         &csm,
michael@0:         dest, destCapacity,
michael@0:         src, srcLength,
michael@0:         ustrcase_internalToTitle, pErrorCode);
michael@0:     if(titleIter==NULL && csm.iter!=NULL) {
michael@0:         ubrk_close(csm.iter);
michael@0:     }
michael@0:     return length;
michael@0: }
michael@0: 
michael@0: U_CAPI int32_t U_EXPORT2
michael@0: ucasemap_toTitle(UCaseMap *csm,
michael@0:                  UChar *dest, int32_t destCapacity,
michael@0:                  const UChar *src, int32_t srcLength,
michael@0:                  UErrorCode *pErrorCode) {
michael@0:     if(csm->iter!=NULL) {
michael@0:         ubrk_setText(csm->iter, src, srcLength, pErrorCode);
michael@0:     } else {
michael@0:         csm->iter=ubrk_open(UBRK_WORD, csm->locale, src, srcLength, pErrorCode);
michael@0:     }
michael@0:     return ustrcase_map(
michael@0:         csm,
michael@0:         dest, destCapacity,
michael@0:         src, srcLength,
michael@0:         ustrcase_internalToTitle, pErrorCode);
michael@0: }
michael@0: 
michael@0: #endif  // !UCONFIG_NO_BREAK_ITERATION