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+/*
+ * Copyright (C) 2008 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ * its contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef WTF_Collator_h
+#define WTF_Collator_h
+
+#include <wtf/Noncopyable.h>
+#include <wtf/PassOwnPtr.h>
+#include <wtf/unicode/Unicode.h>
+
+#if USE(ICU_UNICODE) && !UCONFIG_NO_COLLATION
+struct UCollator;
+#endif
+
+namespace WTF {
+
+ class Collator : public Noncopyable {
+ public:
+ enum Result { Equal = 0, Greater = 1, Less = -1 };
+
+ Collator(const char* locale); // Parsing is lenient; e.g. language identifiers (such as "en-US") are accepted, too.
+ ~Collator();
+ void setOrderLowerFirst(bool);
+
+ static PassOwnPtr<Collator> userDefault();
+
+ Result collate(const ::UChar*, size_t, const ::UChar*, size_t) const;
+
+ private:
+#if USE(ICU_UNICODE) && !UCONFIG_NO_COLLATION
+ void createCollator() const;
+ void releaseCollator();
+ mutable UCollator* m_collator;
+#endif
+ char* m_locale;
+ bool m_lowerFirst;
+ };
+}
+
+using WTF::Collator;
+
+#endif