| /* |
| * reserved comment block |
| * DO NOT REMOVE OR ALTER! |
| */ |
| /* |
| * Copyright 1999-2004 The Apache Software Foundation. |
| * |
| * Licensed 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. |
| */ |
| /* |
| * $Id: XMLCharacterRecognizer.java,v 1.2.4.1 2005/09/15 08:16:01 suresh_emailid Exp $ |
| */ |
| package com.sun.org.apache.xml.internal.utils; |
| |
| /** |
| * Class used to verify whether the specified <var>ch</var> |
| * conforms to the XML 1.0 definition of whitespace. |
| * @xsl.usage internal |
| */ |
| public class XMLCharacterRecognizer |
| { |
| |
| /** |
| * Returns whether the specified <var>ch</var> conforms to the XML 1.0 definition |
| * of whitespace. Refer to <A href="http://www.w3.org/TR/1998/REC-xml-19980210#NT-S"> |
| * the definition of <CODE>S</CODE></A> for details. |
| * @param ch Character to check as XML whitespace. |
| * @return =true if <var>ch</var> is XML whitespace; otherwise =false. |
| */ |
| public static boolean isWhiteSpace(char ch) |
| { |
| return (ch == 0x20) || (ch == 0x09) || (ch == 0xD) || (ch == 0xA); |
| } |
| |
| /** |
| * Tell if the string is whitespace. |
| * |
| * @param ch Character array to check as XML whitespace. |
| * @param start Start index of characters in the array |
| * @param length Number of characters in the array |
| * @return True if the characters in the array are |
| * XML whitespace; otherwise, false. |
| */ |
| public static boolean isWhiteSpace(char ch[], int start, int length) |
| { |
| |
| int end = start + length; |
| |
| for (int s = start; s < end; s++) |
| { |
| if (!isWhiteSpace(ch[s])) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| /** |
| * Tell if the string is whitespace. |
| * |
| * @param buf StringBuffer to check as XML whitespace. |
| * @return True if characters in buffer are XML whitespace, false otherwise |
| */ |
| public static boolean isWhiteSpace(StringBuffer buf) |
| { |
| |
| int n = buf.length(); |
| |
| for (int i = 0; i < n; i++) |
| { |
| if (!isWhiteSpace(buf.charAt(i))) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| /** |
| * Tell if the string is whitespace. |
| * |
| * @param s String to check as XML whitespace. |
| * @return True if characters in buffer are XML whitespace, false otherwise |
| */ |
| public static boolean isWhiteSpace(String s) |
| { |
| |
| if(null != s) |
| { |
| int n = s.length(); |
| |
| for (int i = 0; i < n; i++) |
| { |
| if (!isWhiteSpace(s.charAt(i))) |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| } |