icuSources/common/unistr_case_locale.cpp

   1 /*
   2 *******************************************************************************
   3 *   Copyright (C) 2011, International Business Machines
   4 *   Corporation and others.  All Rights Reserved.
   5 *******************************************************************************
   6 *   file name:  unistr_case_locale.cpp
   7 *   encoding:   US-ASCII
   8 *   tab size:   8 (not used)
   9 *   indentation:4
  10 *
  11 *   created on: 2011may31
  12 *   created by: Markus W. Scherer
  13 *
  14 *   Locale-sensitive case mapping functions (ones that call uloc_getDefault())
  15 *   were moved here to break dependency cycles among parts of the common library.
  16 */
  17
  18 #include "unicode/utypes.h"
  19 #include "unicode/locid.h"
  20 #include "unicode/unistr.h"
  21 #include "cmemory.h"
  22 #include "ustr_imp.h"
  23
  24 U_NAMESPACE_BEGIN
  25
  26 //========================================
  27 // Write implementation
  28 //========================================
  29
  30 /*
  31  * Set parameters on an empty UCaseMap, for UCaseMap-less API functions.
  32  * Do this fast because it is called with every function call.
  33  */
  34 static inline void
  35 setTempCaseMap(UCaseMap *csm, const char *locale) {
  36     if(csm->csp==NULL) {
  37         csm->csp=ucase_getSingleton();
  38     }
  39     if(locale!=NULL && locale[0]==0) {
  40         csm->locale[0]=0;
  41     } else {
  42         ustrcase_setTempCaseMapLocale(csm, locale);
  43     }
  44 }
  45
  46 UnicodeString &
  47 UnicodeString::toLower() {
  48   return toLower(Locale::getDefault());
  49 }
  50
  51 UnicodeString &
  52 UnicodeString::toLower(const Locale &locale) {
  53   UCaseMap csm=UCASEMAP_INITIALIZER;
  54   setTempCaseMap(&csm, locale.getName());
  55   return caseMap(&csm, ustrcase_internalToLower);
  56 }
  57
  58 UnicodeString &
  59 UnicodeString::toUpper() {
  60   return toUpper(Locale::getDefault());
  61 }
  62
  63 UnicodeString &
  64 UnicodeString::toUpper(const Locale &locale) {
  65   UCaseMap csm=UCASEMAP_INITIALIZER;
  66   setTempCaseMap(&csm, locale.getName());
  67   return caseMap(&csm, ustrcase_internalToUpper);
  68 }
  69
  70 U_NAMESPACE_END