Implement (but @hide) java.text.Normalizer from Java 6.

Based on https://android-git.corp.google.com/g/42516.

Includes the harmony tests from their Java 6 branch.

Bug: 719001

1 files changed, 47 insertions, 0 deletions

diff --git a/icu/src/main/java/com/ibm/icu4jni/text/NativeNormalizer.java b/icu/src/main/java/com/ibm/icu4jni/text/NativeNormalizer.java
new file mode 100644
index 0000000..f14b6c1
--- /dev/null
+++ b/icu/src/main/java/com/ibm/icu4jni/text/NativeNormalizer.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.ibm.icu4jni.text;
+
+import java.text.Normalizer.Form;
+
+public final class NativeNormalizer {
+    public static boolean isNormalized(CharSequence src, Form form) {
+        return isNormalizedImpl(src.toString(), toUNormalizationMode(form));
+    }
+
+    public static String normalize(CharSequence src, Form form) {
+        return normalizeImpl(src.toString(), toUNormalizationMode(form));
+    }
+
+    private static int toUNormalizationMode(Form form) {
+        // Translates Java enum constants to ICU int constants.
+        // See UNormalizationMode in "unicode/unorm.h". Stable API since ICU 2.0.
+        switch (form) {
+        case NFC: return 4;
+        case NFD: return 2;
+        case NFKC: return 5;
+        case NFKD: return 3;
+        }
+        throw new AssertionError("unknown Normalizer.Form " + form);
+    }
+
+    private static native String normalizeImpl(String src, int form);
+
+    private static native boolean isNormalizedImpl(String src, int form);
+
+    private NativeNormalizer() {}
+}