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      1 /*
      2 *******************************************************************************
      3 *   Copyright (C) 2011, International Business Machines
      4 *   Corporation and others.  All Rights Reserved.
      5 *******************************************************************************
      6 *   file name:  unistr_titlecase_brkiter.cpp
      7 *   encoding:   US-ASCII
      8 *   tab size:   8 (not used)
      9 *   indentation:2
     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/unistr.h"
     25 #include "unicode/ustring.h"
     26 #include "cmemory.h"
     27 #include "ustr_imp.h"
     28 
     29 static int32_t U_CALLCONV
     30 unistr_case_internalToTitle(const UCaseMap *csm,
     31                             UChar *dest, int32_t destCapacity,
     32                             const UChar *src, int32_t srcLength,
     33                             UErrorCode *pErrorCode) {
     34   ubrk_setText(csm->iter, src, srcLength, pErrorCode);
     35   return ustrcase_internalToTitle(csm, dest, destCapacity, src, srcLength, pErrorCode);
     36 }
     37 
     38 /*
     39  * Set parameters on an empty UCaseMap, for UCaseMap-less API functions.
     40  * Do this fast because it is called with every function call.
     41  */
     42 static inline void
     43 setTempCaseMap(UCaseMap *csm, const char *locale) {
     44     if(csm->csp==NULL) {
     45         csm->csp=ucase_getSingleton();
     46     }
     47     if(locale!=NULL && locale[0]==0) {
     48         csm->locale[0]=0;
     49     } else {
     50         ustrcase_setTempCaseMapLocale(csm, locale);
     51     }
     52 }
     53 
     54 U_NAMESPACE_BEGIN
     55 
     56 UnicodeString &
     57 UnicodeString::toTitle(BreakIterator *titleIter) {
     58   return toTitle(titleIter, Locale::getDefault(), 0);
     59 }
     60 
     61 UnicodeString &
     62 UnicodeString::toTitle(BreakIterator *titleIter, const Locale &locale) {
     63   return toTitle(titleIter, locale, 0);
     64 }
     65 
     66 UnicodeString &
     67 UnicodeString::toTitle(BreakIterator *titleIter, const Locale &locale, uint32_t options) {
     68   UCaseMap csm=UCASEMAP_INITIALIZER;
     69   csm.options=options;
     70   setTempCaseMap(&csm, locale.getName());
     71   BreakIterator *bi=titleIter;
     72   if(bi==NULL) {
     73     UErrorCode errorCode=U_ZERO_ERROR;
     74     bi=BreakIterator::createWordInstance(locale, errorCode);
     75     if(U_FAILURE(errorCode)) {
     76       setToBogus();
     77       return *this;
     78     }
     79   }
     80   csm.iter=reinterpret_cast<UBreakIterator *>(bi);
     81   caseMap(&csm, unistr_case_internalToTitle);
     82   if(titleIter==NULL) {
     83     delete bi;
     84   }
     85   return *this;
     86 }
     87 
     88 U_NAMESPACE_END
     89 
     90 #endif  // !UCONFIG_NO_BREAK_ITERATION
     91