JavaScriptCore-521.tar.gz

[apple/javascriptcore.git] / wtf / unicode / CollatorDefault.cpp

diff --git a/wtf/unicode/CollatorDefault.cpp b/wtf/unicode/CollatorDefault.cpp
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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.
+ */
+
+#include "config.h"
+#include "Collator.h"
+
+#if !USE(ICU_UNICODE) || UCONFIG_NO_COLLATION
+
+namespace WTF {
+
+Collator::Collator(const char*)
+{
+}
+
+Collator::~Collator()
+{
+}
+
+void Collator::setOrderLowerFirst(bool)
+{
+}
+
+std::auto_ptr<Collator> Collator::userDefault()
+{
+    return std::auto_ptr<Collator>(new Collator(0));
+}
+
+// A default implementation for platforms that lack Unicode-aware collation.
+Collator::Result Collator::collate(const UChar* lhs, size_t lhsLength, const UChar* rhs, size_t rhsLength) const
+{
+    int lmin = lhsLength < rhsLength ? lhsLength : rhsLength;
+    int l = 0;
+    while (l < lmin && *lhs == *rhs) {
+        lhs++;
+        rhs++;
+        l++;
+    }
+
+    if (l < lmin)
+        return (*lhs > *rhs) ? Greater : Less;
+
+    if (lhsLength == rhsLength)
+        return Equal;
+
+    return (lhsLength > rhsLength) ? Greater : Less;
+}
+
+}
+
+#endif