org.primefaces.shaded.owasp.encoder.Unicode Maven / Gradle / Ivy
// Copyright (c) 2012 Jeff Ichnowski
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// * Redistributions of source code must retain the above
// copyright notice, this list of conditions and the following
// disclaimer.
//
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials
// provided with the distribution.
//
// * Neither the name of the OWASP nor the names of its
// contributors may be used to endorse or promote products
// derived from this software without specific prior written
// permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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package org.primefaces.shaded.owasp.encoder;
/**
* ASCII and Unicode constants.
*
* @author jeffi
*/
final class Unicode {
/**
* Highest ASCII (usually) valid ASCII char.
*/
static final char MAX_ASCII = '~';
/**
* ASCII "DEL" character.
*/
static final char DEL = 0x7f;
/**
* "Next Line" C1 control character.
*/
static final char NEL = 0x85;
/**
* Highest C1 control character.
*/
static final char MAX_C1_CTRL_CHAR = 0x9f;
/**
* Unicode line separator character, must be encoded in some contexts.
*/
static final char LINE_SEPARATOR = '\u2028';
/**
* Unicode paragraph separator character, must be encoded in some contexts.
*/
static final char PARAGRAPH_SEPARATOR = '\u2029';
/**
* Bit-mask for Unicode non-characaters (XXfffe and XXffff).
*/
static final int NON_CHAR_MASK = 0xfffe;
/**
* Returns true if the argument is not a character according to the Unicode
* standard. Non-characters have the format XXfffe and XXffff, where XX is
* any code plane, and "fffe/ffff" is the low 16-bits in hex.
*
* @param cp the unicode code-point to check
* @return true if {@code cp} is not a character.
*/
static boolean isNonCharacter(int cp) {
return (cp & NON_CHAR_MASK) == NON_CHAR_MASK;
}
/**
* No instances.
*/
private Unicode() {
}
}