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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 org.apache.commons.text.translate;

/**
 * Translates codepoints to their Unicode escaped value suitable for Java source.
 *
 * @since 1.0
 */
public class JavaUnicodeEscaper extends UnicodeEscaper {

    /**
     * 

* Constructs a JavaUnicodeEscaper above the specified value (exclusive). *

* * @param codepoint * above which to escape * @return the newly created {@code UnicodeEscaper} instance */ public static JavaUnicodeEscaper above(final int codepoint) { return outsideOf(0, codepoint); } /** *

* Constructs a JavaUnicodeEscaper below the specified value (exclusive). *

* * @param codepoint * below which to escape * @return the newly created {@code UnicodeEscaper} instance */ public static JavaUnicodeEscaper below(final int codepoint) { return outsideOf(codepoint, Integer.MAX_VALUE); } /** *

* Constructs a JavaUnicodeEscaper between the specified values (inclusive). *

* * @param codepointLow * above which to escape * @param codepointHigh * below which to escape * @return the newly created {@code UnicodeEscaper} instance */ public static JavaUnicodeEscaper between(final int codepointLow, final int codepointHigh) { return new JavaUnicodeEscaper(codepointLow, codepointHigh, true); } /** *

* Constructs a JavaUnicodeEscaper outside of the specified values (exclusive). *

* * @param codepointLow * below which to escape * @param codepointHigh * above which to escape * @return the newly created {@code UnicodeEscaper} instance */ public static JavaUnicodeEscaper outsideOf(final int codepointLow, final int codepointHigh) { return new JavaUnicodeEscaper(codepointLow, codepointHigh, false); } /** *

* Constructs a JavaUnicodeEscaper for the specified range. This is the underlying method for the * other constructors/builders. The below and above boundaries are inclusive when * between is true and exclusive when it is false. *

* * @param below * int value representing the lowest codepoint boundary * @param above * int value representing the highest codepoint boundary * @param between * whether to escape between the boundaries or outside them */ public JavaUnicodeEscaper(final int below, final int above, final boolean between) { super(below, above, between); } /** * Converts the given codepoint to a hex string of the form {@code "\\uXXXX\\uXXXX"}. * * @param codepoint * a Unicode code point * @return the hex string for the given codepoint */ @Override protected String toUtf16Escape(final int codepoint) { final char[] surrogatePair = Character.toChars(codepoint); return "\\u" + hex(surrogatePair[0]) + "\\u" + hex(surrogatePair[1]); } }




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