/*
 * 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;

import java.io.IOException;
import java.io.Writer;

/**
 * Translates codepoints to their XML numeric entity escaped value.
 *
 * @since 1.0
 */
public class NumericEntityEscaper extends CodePointTranslator {

    /** int value representing the lowest codepoint boundary. */
    private final int below;
    /** int value representing the highest codepoint boundary. */
    private final int above;
    /** whether to escape between the boundaries or outside them. */
    private final boolean between;

    /**
     * <p>Constructs a <code>NumericEntityEscaper</code> for the specified range. This is
     * the underlying method for the other constructors/builders. The <code>below</code>
     * and <code>above</code> boundaries are inclusive when <code>between</code> is
     * <code>true</code> and exclusive when it is <code>false</code>. </p>
     *
     * @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
     */
    private NumericEntityEscaper(final int below, final int above, final boolean between) {
        this.below = below;
        this.above = above;
        this.between = between;
    }

    /**
     * <p>Constructs a <code>NumericEntityEscaper</code> for all characters. </p>
     */
    public NumericEntityEscaper() {
        this(0, Integer.MAX_VALUE, true);
    }

    /**
     * <p>Constructs a <code>NumericEntityEscaper</code> below the specified value (exclusive). </p>
     *
     * @param codepoint below which to escape
     * @return the newly created {@code NumericEntityEscaper} instance
     */
    public static NumericEntityEscaper below(final int codepoint) {
        return outsideOf(codepoint, Integer.MAX_VALUE);
    }

    /**
     * <p>Constructs a <code>NumericEntityEscaper</code> above the specified value (exclusive). </p>
     *
     * @param codepoint above which to escape
     * @return the newly created {@code NumericEntityEscaper} instance
     */
    public static NumericEntityEscaper above(final int codepoint) {
        return outsideOf(0, codepoint);
    }

    /**
     * <p>Constructs a <code>NumericEntityEscaper</code> between the specified values (inclusive). </p>
     *
     * @param codepointLow above which to escape
     * @param codepointHigh below which to escape
     * @return the newly created {@code NumericEntityEscaper} instance
     */
    public static NumericEntityEscaper between(final int codepointLow, final int codepointHigh) {
        return new NumericEntityEscaper(codepointLow, codepointHigh, true);
    }

    /**
     * <p>Constructs a <code>NumericEntityEscaper</code> outside of the specified values (exclusive). </p>
     *
     * @param codepointLow below which to escape
     * @param codepointHigh above which to escape
     * @return the newly created {@code NumericEntityEscaper} instance
     */
    public static NumericEntityEscaper outsideOf(final int codepointLow, final int codepointHigh) {
        return new NumericEntityEscaper(codepointLow, codepointHigh, false);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public boolean translate(final int codepoint, final Writer out) throws IOException {
        if (between) {
            if (codepoint < below || codepoint > above) {
                return false;
            }
        } else {
            if (codepoint >= below && codepoint <= above) {
                return false;
            }
        }

        out.write("&#");
        out.write(Integer.toString(codepoint, 10));
        out.write(';');
        return true;
    }
}

@@ -892,16 +892,56 @@
 riter;%0A%0A
+import org.apache.commons.lang3.Range;%0A%0A
 /**%0A * T
@@ -1094,197 +1094,8 @@
  %7B%0A%0A
-    /** int value representing the lowest codepoint boundary. */%0A    private final int below;%0A    /** int value representing the highest codepoint boundary. */%0A    private final int above;%0A
     
@@ -1194,16 +1194,116 @@
 etween;%0A
+    /** range from lowest codepoint to highest codepoint. */%0A    private final Range%3CInteger%3E range;
 %0A    /**
@@ -1991,49 +1991,43 @@
 his.
-below = below;%0A        this.above =
+range = Range.between(below,
  above
+)
 ;%0A  
@@ -4092,202 +4092,58 @@
 if (
+this.
 between
-) %7B%0A            if (codepoint %3C below %7C%7C codepoint %3E above) %7B%0A                return false;%0A            %7D%0A        %7D else %7B%0A            if (codepoint %3E= below && codepoint %3C= above) %7B%0A    
+ != this.range.contains(codepoint)) %7B%0A
     
@@ -4176,24 +4176,9 @@
     
-    %7D%0A        %7D%0A
+%7D
 %0A   

use [lang]'s Range to replace if/else logic