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112 lines
2.9 KiB
112 lines
2.9 KiB
/*
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* Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*/
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/*
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* Copyright 1999-2004 The Apache Software Foundation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* $Id: XMLCharacterRecognizer.java,v 1.2.4.1 2005/09/15 08:16:01 suresh_emailid Exp $
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*/
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package com.sun.org.apache.xml.internal.utils;
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/**
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* Class used to verify whether the specified <var>ch</var>
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* conforms to the XML 1.0 definition of whitespace.
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* @xsl.usage internal
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*/
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public class XMLCharacterRecognizer
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{
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/**
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* Returns whether the specified <var>ch</var> conforms to the XML 1.0 definition
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* of whitespace. Refer to <A href="http://www.w3.org/TR/1998/REC-xml-19980210#NT-S">
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* the definition of <CODE>S</CODE></A> for details.
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* @param ch Character to check as XML whitespace.
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* @return =true if <var>ch</var> is XML whitespace; otherwise =false.
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*/
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public static boolean isWhiteSpace(char ch)
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{
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return (ch == 0x20) || (ch == 0x09) || (ch == 0xD) || (ch == 0xA);
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}
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/**
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* Tell if the string is whitespace.
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*
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* @param ch Character array to check as XML whitespace.
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* @param start Start index of characters in the array
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* @param length Number of characters in the array
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* @return True if the characters in the array are
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* XML whitespace; otherwise, false.
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*/
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public static boolean isWhiteSpace(char ch[], int start, int length)
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{
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int end = start + length;
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for (int s = start; s < end; s++)
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{
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if (!isWhiteSpace(ch[s]))
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return false;
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}
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return true;
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}
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/**
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* Tell if the string is whitespace.
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*
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* @param buf StringBuffer to check as XML whitespace.
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* @return True if characters in buffer are XML whitespace, false otherwise
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*/
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public static boolean isWhiteSpace(StringBuffer buf)
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{
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int n = buf.length();
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for (int i = 0; i < n; i++)
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{
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if (!isWhiteSpace(buf.charAt(i)))
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return false;
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}
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return true;
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}
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/**
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* Tell if the string is whitespace.
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*
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* @param s String to check as XML whitespace.
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* @return True if characters in buffer are XML whitespace, false otherwise
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*/
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public static boolean isWhiteSpace(String s)
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{
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if(null != s)
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{
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int n = s.length();
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for (int i = 0; i < n; i++)
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{
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if (!isWhiteSpace(s.charAt(i)))
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return false;
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}
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}
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return true;
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}
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}
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