icuSources/common/unistr_titlecase_brkiter.cpp

   1 // © 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:  unistr_titlecase_brkiter.cpp
   9 *   encoding:   UTF-8
  10 *   tab size:   8 (not used)
  11 *   indentation:2
  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/locid.h"
  26 #include "unicode/ucasemap.h"
  27 #include "unicode/unistr.h"
  28 #include "ucasemap_imp.h"
  29
  30 U_NAMESPACE_BEGIN
  31
  32 UnicodeString &
  33 UnicodeString::toTitle(BreakIterator *titleIter) {
  34   return toTitle(titleIter, Locale::getDefault(), 0);
  35 }
  36
  37 UnicodeString &
  38 UnicodeString::toTitle(BreakIterator *titleIter, const Locale &locale) {
  39   return toTitle(titleIter, locale, 0);
  40 }
  41
  42 UnicodeString &
  43 UnicodeString::toTitle(BreakIterator *titleIter, const Locale &locale, uint32_t options) {
  44   BreakIterator *bi=titleIter;
  45   if(bi==NULL) {
  46     UErrorCode errorCode=U_ZERO_ERROR;
  47     bi=BreakIterator::createWordInstance(locale, errorCode);
  48     if(U_FAILURE(errorCode)) {
  49       setToBogus();
  50       return *this;
  51     }
  52   }
  53   // Because the "this" string is both the source and the destination,
  54   // make a copy of the original source for use by the break iterator.
  55   // See tickets #13127 and #13128
  56   UnicodeString copyOfInput(*this);
  57   bi->setText(copyOfInput);
  58   caseMap(ustrcase_getCaseLocale(locale.getBaseName()), options, bi, ustrcase_internalToTitle);
  59   if(titleIter==NULL) {
  60     delete bi;
  61   }
  62   return *this;
  63 }
  64
  65 U_NAMESPACE_END
  66
  67 #endif  // !UCONFIG_NO_BREAK_ITERATION