ICU-400.37.tar.gz

[apple/icu.git] / icuSources / i18n / smpdtfst.cpp

diff --git a/icuSources/i18n/smpdtfst.cpp b/icuSources/i18n/smpdtfst.cpp
new file mode 100644 (file)
index 0000000..95fad4f
--- /dev/null
+++ b/icuSources/i18n/smpdtfst.cpp
@@ -0,0 +1,157 @@
+//
+//  smpdtfst.h
+//
+//  Copyright (C) 2009, International Business Machines Corporation and others.
+//  All Rights Reserved.
+//
+//  This file contains the class SimpleDateFormatStaticSets
+//
+//  SimpleDateFormatStaticSets holds the UnicodeSets that are needed for lenient
+//  parsing of literal characters in date/time strings.
+//
+
+#include "unicode/utypes.h"
+
+#if !UCONFIG_NO_FORMATTING
+
+#include "unicode/uniset.h"
+#include "unicode/udat.h"
+#include "cmemory.h"
+#include "ucln_in.h"
+#include "umutex.h"
+
+
+#include "smpdtfst.h"
+
+U_NAMESPACE_BEGIN
+
+SimpleDateFormatStaticSets *SimpleDateFormatStaticSets::gStaticSets = NULL;
+
+SimpleDateFormatStaticSets::SimpleDateFormatStaticSets(UErrorCode *status)
+: fDateIgnorables(NULL),
+  fTimeIgnorables(NULL),
+  fOtherIgnorables(NULL)
+{
+    fDateIgnorables  = new UnicodeSet("[-,./[:whitespace:]]", *status);
+    fTimeIgnorables  = new UnicodeSet("[-.:[:whitespace:]]",  *status);
+    fOtherIgnorables = new UnicodeSet("[:whitespace:]",       *status);
+    
+    // Check for null pointers
+    if (fDateIgnorables == NULL || fTimeIgnorables == NULL || fOtherIgnorables == NULL) {
+        goto ExitConstrDeleteAll;
+    }
+    
+    // Freeze all the sets
+    fDateIgnorables->freeze();
+    fTimeIgnorables->freeze();
+    fOtherIgnorables->freeze();
+       
+    return; // If we reached this point, everything is fine so just exit
+    
+ExitConstrDeleteAll: // Remove all sets and return error
+    delete fDateIgnorables;  fDateIgnorables = NULL;
+    delete fTimeIgnorables;  fTimeIgnorables = NULL;
+    delete fOtherIgnorables; fOtherIgnorables = NULL;
+    
+    *status = U_MEMORY_ALLOCATION_ERROR;
+}
+
+
+SimpleDateFormatStaticSets::~SimpleDateFormatStaticSets() {
+    delete fDateIgnorables;  fDateIgnorables = NULL;
+    delete fTimeIgnorables;  fTimeIgnorables = NULL;
+    delete fOtherIgnorables; fOtherIgnorables = NULL;
+}
+
+
+//------------------------------------------------------------------------------
+//
+//   smpdtfmt_cleanup     Memory cleanup function, free/delete all
+//                      cached memory.  Called by ICU's u_cleanup() function.
+//
+//------------------------------------------------------------------------------
+UBool
+SimpleDateFormatStaticSets::cleanup(void)
+{
+    delete SimpleDateFormatStaticSets::gStaticSets;
+    SimpleDateFormatStaticSets::gStaticSets = NULL;
+    
+    return TRUE;
+}
+
+U_CDECL_BEGIN
+static UBool U_CALLCONV
+smpdtfmt_cleanup(void)
+{
+    return SimpleDateFormatStaticSets::cleanup();
+}
+U_CDECL_END
+
+void SimpleDateFormatStaticSets::initSets(UErrorCode *status)
+{
+       SimpleDateFormatStaticSets *p;
+    
+    UMTX_CHECK(NULL, gStaticSets, p);
+    if (p == NULL) {
+        p = new SimpleDateFormatStaticSets(status);
+        
+        if (p == NULL) {
+               *status = U_MEMORY_ALLOCATION_ERROR;
+               return;
+        }
+        
+        if (U_FAILURE(*status)) {
+            delete p;
+            return;
+        }
+        
+        umtx_lock(NULL);
+        if (gStaticSets == NULL) {
+            gStaticSets = p;
+            p = NULL;
+        }
+        
+        umtx_unlock(NULL);
+        if (p != NULL) {
+            delete p;
+        }
+        
+        ucln_i18n_registerCleanup(UCLN_I18N_SMPDTFMT, smpdtfmt_cleanup);
+    }
+}
+
+UnicodeSet *SimpleDateFormatStaticSets::getIgnorables(UDateFormatField fieldIndex)
+{
+       UErrorCode status = U_ZERO_ERROR;
+    
+       initSets(&status);
+    
+       if (U_FAILURE(status)) {
+               return NULL;
+       }
+    
+    switch (fieldIndex) {
+        case UDAT_YEAR_FIELD:
+        case UDAT_MONTH_FIELD:
+        case UDAT_DATE_FIELD:
+        case UDAT_STANDALONE_DAY_FIELD:
+        case UDAT_STANDALONE_MONTH_FIELD:
+            return gStaticSets->fDateIgnorables;
+            
+        case UDAT_HOUR_OF_DAY1_FIELD:
+        case UDAT_HOUR_OF_DAY0_FIELD:
+        case UDAT_MINUTE_FIELD:
+        case UDAT_SECOND_FIELD:
+        case UDAT_HOUR1_FIELD:
+        case UDAT_HOUR0_FIELD:
+            return gStaticSets->fTimeIgnorables;
+            
+        default:
+            return gStaticSets->fOtherIgnorables;
+    }
+}
+
+
+U_NAMESPACE_END
+
+#endif // #if !UCONFIG_NO_FORMATTING