- /*
- * 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 1.7 2004/02/17 04:21:14 minchau 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 buf StringBuffer 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;
- }
-
- }