juneau-core/juneau-marshall/src/main/java/org/apache/juneau/internal/AsciiMap.java

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// * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance            *
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// *  http://www.apache.org/licenses/LICENSE-2.0                                                                             *
// *                                                                                                                         *
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// ***************************************************************************************************************************
package org.apache.juneau.internal;

/**
 * Stores a Map of ASCII characters to Strings in a quick-lookup array.
 */
public final class AsciiMap {
	final String[] store = new String[128];

	/**
	 * Adds an entry to this map.
	 *
	 * @param c The key.
	 * @param s The value.
	 * @return This object (for method chaining).
	 */
	public AsciiMap append(char c, String s) {
		if (c <= 127)
			store[c] = s;
		return this;
	}

	/**
	 * Returns the value for the specified key.
	 *
	 * @param c The key.
	 * @return The value.
	 */
	public String get(char c) {
		return store[c];
	}

	/**
	 * Returns <jk>true</jk> if the specified character is in this store.
	 *
	 * @param c The character to check.
	 * @return <jk>true</jk> if the specified character is in this store.
	 */
	public boolean contains(char c) {
		if (c > 127)
			return false;
		return store[c] != null;
	}

	/**
	 * Returns <jk>true</jk> if the specified character is in this store.
	 *
	 * @param c The character to check.
	 * @return <jk>true</jk> if the specified character is in this store.
	 */
	public boolean contains(int c) {
		if (c < 0 || c > 127)
			return false;
		return store[c] != null;
	}

	/**
	 * Returns <jk>true</jk> if the specified string contains at least one character in this set.
	 *
	 * @param s The string to test.
	 * @return <jk>true</jk> if the string is not null and contains at least one character in this set.
	 */
	public boolean contains(CharSequence s) {
		if (s == null)
			return false;
		for (int i = 0; i < s.length(); i++)
			if (contains(s.charAt(i)))
				return true;
		return false;
	}
}