- /*
- * The Apache Software License, Version 1.1
- *
- *
- * Copyright (c) 1999 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. 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.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Xalan" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation and was
- * originally based on software copyright (c) 1999, Lotus
- * Development Corporation., http://www.lotus.com. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- package org.apache.xml.utils;
-
- /**
- * <meta name="usage" content="internal"/>
- * Class used to verify whether the specified <var>ch</var>
- * conforms to the XML 1.0 definition of whitespace.
- */
- 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;
- }
-
- }