icuSources/common/ustr_titlecase_brkiter.cpp

   1 /*
   2 *******************************************************************************
   3 *   Copyright (C) 2011, International Business Machines
   4 *   Corporation and others.  All Rights Reserved.
   5 *******************************************************************************
   6 *   file name:  ustr_titlecase_brkiter.cpp
   7 *   encoding:   US-ASCII
   8 *   tab size:   8 (not used)
   9 *   indentation:4
  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/ucasemap.h"
  25 #include "cmemory.h"
  26 #include "ucase.h"
  27 #include "ustr_imp.h"
  28
  29 /* functions available in the common library (for unistr_case.cpp) */
  30
  31 /*
  32  * Set parameters on an empty UCaseMap, for UCaseMap-less API functions.
  33  * Do this fast because it is called with every function call.
  34  * Duplicate of the same function in ustrcase.cpp, to keep it inline.
  35  */
  36 static inline void
  37 setTempCaseMap(UCaseMap *csm, const char *locale) {
  38     if(csm->csp==NULL) {
  39         csm->csp=ucase_getSingleton();
  40     }
  41     if(locale!=NULL && locale[0]==0) {
  42         csm->locale[0]=0;
  43     } else {
  44         ustrcase_setTempCaseMapLocale(csm, locale);
  45     }
  46 }
  47
  48 /* public API functions */
  49
  50 U_CAPI int32_t U_EXPORT2
  51 u_strToTitle(UChar *dest, int32_t destCapacity,
  52              const UChar *src, int32_t srcLength,
  53              UBreakIterator *titleIter,
  54              const char *locale,
  55              UErrorCode *pErrorCode) {
  56     UCaseMap csm=UCASEMAP_INITIALIZER;
  57     setTempCaseMap(&csm, locale);
  58     if(titleIter!=NULL) {
  59         ubrk_setText(csm.iter=titleIter, src, srcLength, pErrorCode);
  60     } else {
  61         csm.iter=ubrk_open(UBRK_WORD, csm.locale, src, srcLength, pErrorCode);
  62     }
  63     int32_t length=ustrcase_map(
  64         &csm,
  65         dest, destCapacity,
  66         src, srcLength,
  67         ustrcase_internalToTitle, pErrorCode);
  68     if(titleIter==NULL && csm.iter!=NULL) {
  69         ubrk_close(csm.iter);
  70     }
  71     return length;
  72 }
  73
  74 U_CAPI int32_t U_EXPORT2
  75 ucasemap_toTitle(UCaseMap *csm,
  76                  UChar *dest, int32_t destCapacity,
  77                  const UChar *src, int32_t srcLength,
  78                  UErrorCode *pErrorCode) {
  79     if(csm->iter!=NULL) {
  80         ubrk_setText(csm->iter, src, srcLength, pErrorCode);
  81     } else {
  82         csm->iter=ubrk_open(UBRK_WORD, csm->locale, src, srcLength, pErrorCode);
  83     }
  84     return ustrcase_map(
  85         csm,
  86         dest, destCapacity,
  87         src, srcLength,
  88         ustrcase_internalToTitle, pErrorCode);
  89 }
  90
  91 #endif  // !UCONFIG_NO_BREAK_ITERATION