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  /*
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   * 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
   * 
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  * 
  * 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.
  * ====================================================================
  *
  * 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, International
  * Business Machines, Inc., http://www.apache.org.  For more
  * information on the Apache Software Foundation, please see
  * <http://www.apache.org/>.
  */
 
 package org.apache.jasper.xmlparser;

XMLString is a structure used to pass character arrays. However, XMLStringBuffer is a buffer in which characters can be appended and extends XMLString so that it can be passed to methods expecting an XMLString object. This is a safe operation because it is assumed that any callee will not modify the contents of the XMLString structure.

The contents of the string are managed by the string buffer. As characters are appended, the string buffer will grow as needed.

Note: Never set the ch, offset, and length fields directly. These fields are managed by the string buffer. In order to reset the buffer, call clear().

Author(s):
Andy Clark, IBM
Eric Ye, IBM
Version:
$Id: XMLStringBuffer.java 515 2008-03-17 21:02:23Z jfrederic.clere@jboss.com $
 
 public class XMLStringBuffer
     extends XMLString {
 
     //
     // Constants
     //
 
    
Default buffer size (32).
 
     public static final int DEFAULT_SIZE = 32;
 
     //
     // Constructors
     //
 
    
 
     public XMLStringBuffer() {
         this();
     } // <init>()
 
    

Parameters:
size
 
     public XMLStringBuffer(int size) {
          = new char[size];
     } // <init>(int)
 
    
Constructs a string buffer from a char.
 
     public XMLStringBuffer(char c) {
         this(1);
         append(c);
     } // <init>(char)
 
    
Constructs a string buffer from a String.
 
     public XMLStringBuffer(String s) {
         this(s.length());
         append(s);
     } // <init>(String)
 
    
Constructs a string buffer from the specified character array.
 
     public XMLStringBuffer(char[] chint offsetint length) {
         this(length);
         append(choffsetlength);
     } // <init>(char[],int,int)
 
    
Constructs a string buffer from the specified XMLString.
 
     public XMLStringBuffer(XMLString s) {
         this(s.length);
        append(s);
    } // <init>(XMLString)
    //
    // Public methods
    //

    
Clears the string buffer.
    public void clear() {
         = 0;
         = 0;
    }

    
append

Parameters:
c
    public void append(char c) {
        if (this. + 1 > this..length) {
                    int newLength = this..length*2;
                    if (newLength < this..length + )
                        newLength = this..length + ;
                    char[] newch = new char[newLength];
                    System.arraycopy(this., 0, newch, 0, this.);
                    this. = newch;
        }
        this.[this.] = c;
        this.++;
    } // append(char)

    
append

Parameters:
s
    public void append(String s) {
        int length = s.length();
        if (this. + length > this..length) {
            int newLength = this..length*2;
            if (newLength < this. + length + )
                newLength = this..length + length + ;
            char[] newch = new char[newLength];            
            System.arraycopy(this., 0, newch, 0, this.);
            this. = newch;
        }
        s.getChars(0, lengththis.this.);
        this. += length;
    } // append(String)

    
append

Parameters:
ch
offset
length
    public void append(char[] chint offsetint length) {
        if (this. + length > this..length) {
            char[] newch = new char[this..length + length + ];
            System.arraycopy(this., 0, newch, 0, this.);
            this. = newch;
        }
        System.arraycopy(choffsetthis.this.length);
        this. += length;
    } // append(char[],int,int)

    
append

Parameters:
s
    public void append(XMLString s) {
        append(s.chs.offsets.length);
    } // append(XMLString)
// class XMLStringBuffer
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