The Tor Browser: intl/icu/source/common/ustr_titlecase

     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 */

    18 #include "unicode/utypes.h"

    20 #if !UCONFIG_NO_BREAK_ITERATION

    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"

    29 /* functions available in the common library (for unistr_case.cpp) */

    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 }

    48 /* public API functions */

    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 }

    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 }

    91 #endif  // !UCONFIG_NO_BREAK_ITERATION

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