1 files changed, 137 insertions, 0 deletions
diff --git a/intl/icu/source/i18n/smpdtfst.cpp b/intl/icu/source/i18n/smpdtfst.cpp
new file mode 100644
index 0000000000..9f9166aceb
--- /dev/null
+++ b/intl/icu/source/i18n/smpdtfst.cpp
@@ -0,0 +1,137 @@
+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+/*
+*******************************************************************************
+* Copyright (C) 2009-2013, 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 "uassert.h"
+#include "ucln_in.h"
+#include "umutex.h"
+
+
+#include "smpdtfst.h"
+
+U_NAMESPACE_BEGIN
+
+SimpleDateFormatStaticSets *gStaticSets = nullptr;
+UInitOnce gSimpleDateFormatStaticSetsInitOnce {};
+
+SimpleDateFormatStaticSets::SimpleDateFormatStaticSets(UErrorCode &status)
+: fDateIgnorables(nullptr),
+  fTimeIgnorables(nullptr),
+  fOtherIgnorables(nullptr)
+{
+    fDateIgnorables  = new UnicodeSet(UNICODE_STRING("[-,./[:whitespace:]]", 20), status);
+    fTimeIgnorables  = new UnicodeSet(UNICODE_STRING("[-.:[:whitespace:]]", 19),  status);
+    fOtherIgnorables = new UnicodeSet(UNICODE_STRING("[:whitespace:]", 14),       status);
+
+    // Check for null pointers
+    if (fDateIgnorables == nullptr || fTimeIgnorables == nullptr || fOtherIgnorables == nullptr) {
+        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 = nullptr;
+    delete fTimeIgnorables;  fTimeIgnorables = nullptr;
+    delete fOtherIgnorables; fOtherIgnorables = nullptr;
+
+    status = U_MEMORY_ALLOCATION_ERROR;
+}
+
+
+SimpleDateFormatStaticSets::~SimpleDateFormatStaticSets() {
+    delete fDateIgnorables;  fDateIgnorables = nullptr;
+    delete fTimeIgnorables;  fTimeIgnorables = nullptr;
+    delete fOtherIgnorables; fOtherIgnorables = nullptr;
+}
+
+
+//------------------------------------------------------------------------------
+//
+//   smpdtfmt_cleanup     Memory cleanup function, free/delete all
+//                      cached memory.  Called by ICU's u_cleanup() function.
+//
+//------------------------------------------------------------------------------
+UBool
+SimpleDateFormatStaticSets::cleanup()
+{
+    delete gStaticSets;
+    gStaticSets = nullptr;
+    gSimpleDateFormatStaticSetsInitOnce.reset();
+    return true;
+}
+
+U_CDECL_BEGIN
+static UBool U_CALLCONV
+smpdtfmt_cleanup()
+{
+    return SimpleDateFormatStaticSets::cleanup();
+}
+
+static void U_CALLCONV smpdtfmt_initSets(UErrorCode &status) {
+    ucln_i18n_registerCleanup(UCLN_I18N_SMPDTFMT, smpdtfmt_cleanup);
+    U_ASSERT(gStaticSets == nullptr);
+    gStaticSets = new SimpleDateFormatStaticSets(status);
+    if (gStaticSets == nullptr) {
+        status = U_MEMORY_ALLOCATION_ERROR;
+        return;
+    }
+}
+
+U_CDECL_END
+
+UnicodeSet *SimpleDateFormatStaticSets::getIgnorables(UDateFormatField fieldIndex)
+{
+    UErrorCode status = U_ZERO_ERROR;
+    umtx_initOnce(gSimpleDateFormatStaticSetsInitOnce, &smpdtfmt_initSets, status);
+    if (U_FAILURE(status)) {
+        return nullptr;
+    }
+    
+    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