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A library jar that provides APIs for Applications written for the Google Android Platform.

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/* Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 java.net;

import libcore.icu.NativeIDN;

/**
 * Converts internationalized domain names between Unicode and the ASCII Compatible Encoding
 * (ACE) representation.
 *
 * 

See RFC 3490 for full details. * * @since 1.6 */ public final class IDN { /** * When set, allows IDN to process unassigned unicode points. */ public static final int ALLOW_UNASSIGNED = 1; /** * When set, ASCII strings are checked against * RFC 1122 and * RFC 1123. */ public static final int USE_STD3_ASCII_RULES = 2; private IDN() { } /** * Transform a Unicode String to ASCII Compatible Encoding String according * to the algorithm defined in RFC 3490. * *

If the transformation fails (because the input is not a valid IDN), an * exception will be thrown. * *

This method can handle either an individual label or an entire domain name. * In the latter case, the separators are: U+002E (full stop), U+3002 (ideographic full stop), * U+FF0E (fullwidth full stop), and U+FF61 (halfwidth ideographic full stop). * All of these will become U+002E (full stop) in the result. * * @param input the Unicode name * @param flags 0, {@code ALLOW_UNASSIGNED}, {@code USE_STD3_ASCII_RULES}, * or {@code ALLOW_UNASSIGNED | USE_STD3_ASCII_RULES} * @return the ACE name * @throws IllegalArgumentException if {@code input} does not conform to RFC 3490 */ public static String toASCII(String input, int flags) { return NativeIDN.toASCII(input, flags); } /** * Equivalent to {@code toASCII(input, 0)}. * * @param input the Unicode name * @return the ACE name * @throws IllegalArgumentException if {@code input} does not conform to RFC 3490 */ public static String toASCII(String input) { return toASCII(input, 0); } /** * Translates a string from ASCII Compatible Encoding (ACE) to Unicode * according to the algorithm defined in RFC 3490. * *

Unlike {@code toASCII}, this transformation cannot fail. * *

This method can handle either an individual label or an entire domain name. * In the latter case, the separators are: U+002E (full stop), U+3002 (ideographic full stop), * U+FF0E (fullwidth full stop), and U+FF61 (halfwidth ideographic full stop). * * @param input the ACE name * @return the Unicode name * @param flags 0, {@code ALLOW_UNASSIGNED}, {@code USE_STD3_ASCII_RULES}, * or {@code ALLOW_UNASSIGNED | USE_STD3_ASCII_RULES} */ public static String toUnicode(String input, int flags) { return NativeIDN.toUnicode(input, flags); } /** * Equivalent to {@code toUnicode(input, 0)}. * * @param input the ACE name * @return the Unicode name */ public static String toUnicode(String input) { return NativeIDN.toUnicode(input, 0); } }





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