michael@0: /*
michael@0: *******************************************************************************
michael@0: * Copyright (C) 2009-2013, International Business Machines Corporation and    *
michael@0: * others. All Rights Reserved.                                                *
michael@0: *******************************************************************************
michael@0: *
michael@0: * This file contains the class SimpleDateFormatStaticSets
michael@0: *
michael@0: * SimpleDateFormatStaticSets holds the UnicodeSets that are needed for lenient
michael@0: * parsing of literal characters in date/time strings.
michael@0: ********************************************************************************
michael@0: */
michael@0: 
michael@0: #include "unicode/utypes.h"
michael@0: 
michael@0: #if !UCONFIG_NO_FORMATTING
michael@0: 
michael@0: #include "unicode/uniset.h"
michael@0: #include "unicode/udat.h"
michael@0: #include "cmemory.h"
michael@0: #include "uassert.h"
michael@0: #include "ucln_in.h"
michael@0: #include "umutex.h"
michael@0: 
michael@0: 
michael@0: #include "smpdtfst.h"
michael@0: 
michael@0: U_NAMESPACE_BEGIN
michael@0: 
michael@0: SimpleDateFormatStaticSets *gStaticSets = NULL;
michael@0: UInitOnce gSimpleDateFormatStaticSetsInitOnce = U_INITONCE_INITIALIZER;
michael@0: 
michael@0: SimpleDateFormatStaticSets::SimpleDateFormatStaticSets(UErrorCode &status)
michael@0: : fDateIgnorables(NULL),
michael@0:   fTimeIgnorables(NULL),
michael@0:   fOtherIgnorables(NULL)
michael@0: {
michael@0:     fDateIgnorables  = new UnicodeSet(UNICODE_STRING("[-,./[:whitespace:]]", 20), status);
michael@0:     fTimeIgnorables  = new UnicodeSet(UNICODE_STRING("[-.:[:whitespace:]]", 19),  status);
michael@0:     fOtherIgnorables = new UnicodeSet(UNICODE_STRING("[:whitespace:]", 14),       status);
michael@0: 
michael@0:     // Check for null pointers
michael@0:     if (fDateIgnorables == NULL || fTimeIgnorables == NULL || fOtherIgnorables == NULL) {
michael@0:         goto ExitConstrDeleteAll;
michael@0:     }
michael@0: 
michael@0:     // Freeze all the sets
michael@0:     fDateIgnorables->freeze();
michael@0:     fTimeIgnorables->freeze();
michael@0:     fOtherIgnorables->freeze();
michael@0: 
michael@0:     return; // If we reached this point, everything is fine so just exit
michael@0: 
michael@0: ExitConstrDeleteAll: // Remove all sets and return error
michael@0:     delete fDateIgnorables;  fDateIgnorables = NULL;
michael@0:     delete fTimeIgnorables;  fTimeIgnorables = NULL;
michael@0:     delete fOtherIgnorables; fOtherIgnorables = NULL;
michael@0: 
michael@0:     status = U_MEMORY_ALLOCATION_ERROR;
michael@0: }
michael@0: 
michael@0: 
michael@0: SimpleDateFormatStaticSets::~SimpleDateFormatStaticSets() {
michael@0:     delete fDateIgnorables;  fDateIgnorables = NULL;
michael@0:     delete fTimeIgnorables;  fTimeIgnorables = NULL;
michael@0:     delete fOtherIgnorables; fOtherIgnorables = NULL;
michael@0: }
michael@0: 
michael@0: 
michael@0: //------------------------------------------------------------------------------
michael@0: //
michael@0: //   smpdtfmt_cleanup     Memory cleanup function, free/delete all
michael@0: //                      cached memory.  Called by ICU's u_cleanup() function.
michael@0: //
michael@0: //------------------------------------------------------------------------------
michael@0: UBool
michael@0: SimpleDateFormatStaticSets::cleanup(void)
michael@0: {
michael@0:     delete gStaticSets;
michael@0:     gStaticSets = NULL;
michael@0:     gSimpleDateFormatStaticSetsInitOnce.reset();
michael@0:     return TRUE;
michael@0: }
michael@0: 
michael@0: U_CDECL_BEGIN
michael@0: static UBool U_CALLCONV
michael@0: smpdtfmt_cleanup(void)
michael@0: {
michael@0:     return SimpleDateFormatStaticSets::cleanup();
michael@0: }
michael@0: 
michael@0: static void U_CALLCONV smpdtfmt_initSets(UErrorCode &status) {
michael@0:     ucln_i18n_registerCleanup(UCLN_I18N_SMPDTFMT, smpdtfmt_cleanup);
michael@0:     U_ASSERT(gStaticSets == NULL);
michael@0:     gStaticSets = new SimpleDateFormatStaticSets(status);
michael@0:     if (gStaticSets == NULL) {
michael@0:         status = U_MEMORY_ALLOCATION_ERROR;
michael@0:         return;
michael@0:     }
michael@0: }
michael@0: 
michael@0: U_CDECL_END
michael@0: 
michael@0: UnicodeSet *SimpleDateFormatStaticSets::getIgnorables(UDateFormatField fieldIndex)
michael@0: {
michael@0:     UErrorCode status = U_ZERO_ERROR;
michael@0:     umtx_initOnce(gSimpleDateFormatStaticSetsInitOnce, &smpdtfmt_initSets, status);
michael@0:     if (U_FAILURE(status)) {
michael@0:         return NULL;
michael@0:     }
michael@0:     
michael@0:     switch (fieldIndex) {
michael@0:         case UDAT_YEAR_FIELD:
michael@0:         case UDAT_MONTH_FIELD:
michael@0:         case UDAT_DATE_FIELD:
michael@0:         case UDAT_STANDALONE_DAY_FIELD:
michael@0:         case UDAT_STANDALONE_MONTH_FIELD:
michael@0:             return gStaticSets->fDateIgnorables;
michael@0:             
michael@0:         case UDAT_HOUR_OF_DAY1_FIELD:
michael@0:         case UDAT_HOUR_OF_DAY0_FIELD:
michael@0:         case UDAT_MINUTE_FIELD:
michael@0:         case UDAT_SECOND_FIELD:
michael@0:         case UDAT_HOUR1_FIELD:
michael@0:         case UDAT_HOUR0_FIELD:
michael@0:             return gStaticSets->fTimeIgnorables;
michael@0:             
michael@0:         default:
michael@0:             return gStaticSets->fOtherIgnorables;
michael@0:     }
michael@0: }
michael@0: 
michael@0: U_NAMESPACE_END
michael@0: 
michael@0: #endif // #if !UCONFIG_NO_FORMATTING