icuSources/common/unistr_titlecase_brkiter.cpp

   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