Verify whether the specified character conforms to the XML 1.0 definition of whitespace

  

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you 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 468655 2006-10-28 07:12:06Z minchau $
 */

/**
 * 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;
  }

}

Related examples in the same category

1.	XMLEncoder a bean
2.	Returns true if the argument, a UCS-4 character code, is valid in XML documents.
3.	Determining validity of characters outside basic 7-bit range of Unicode, for XML 1.0
4.	XML-related tasks and java.io Readers: IETF standard encoding names, automatic detection of most XML encodings
5.	Xml Encoding Sniffer
6.	Returns true if the character is an XML "letter"
7.	XML character properties
8.	Encode Xml Attribute
9.	Escape / unescape special chars according XML specifications
10.	Returns true if the character is a non-initial character in names according to the XML recommendation
11.	Provides HTML and XML entity utilities.

Verify whether the specified character conforms to the XML 1.0 definition of whitespace : XMLEncoder « XML « Java

Related examples in the same category