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/*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 2000-2002 The Apache Software Foundation. All rights
* reserved.
*
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* 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.
*
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* 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, International
* Business Machines, Inc., http://www.apache.org. For more
* information on the Apache Software Foundation, please see
* .
*/
package com.sun.xml.stream.xerces.xni;
/**
* This class is used as a structure to pass text contained in the underlying
* character buffer of the scanner. The offset and length fields allow the
* buffer to be re-used without creating new character arrays.
*
* Note: Methods that are passed an XMLString structure
* should consider the contents read-only and not make any modifications
* to the contents of the buffer. The method receiving this structure
* should also not modify the offset and length if this structure (or
* the values of this structure) are passed to another method.
*
* Note: Methods that are passed an XMLString structure
* are required to copy the information out of the buffer if it is to be
* saved for use beyond the scope of the method. The contents of the
* structure are volatile and the contents of the character buffer cannot
* be assured once the method that is passed this structure returns.
* Therefore, methods passed this structure should not save any reference
* to the structure or the character array contained in the structure.
*
* @author Eric Ye, IBM
* @author Andy Clark, IBM
*
* @version $Id: XMLString.java,v 1.3 2007-07-19 22:33:16 ofung Exp $
*/
public class XMLString {
//
// Data
//
/** The character array. */
public char[] ch;
/** The offset into the character array. */
public int offset;
/** The length of characters from the offset. */
public int length;
//
// Constructors
//
/** Default constructor. */
public XMLString() {
} // ()
/**
* Constructs an XMLString structure preset with the specified
* values.
*
* @param ch The character array.
* @param offset The offset into the character array.
* @param length The length of characters from the offset.
*/
public XMLString(char[] ch, int offset, int length) {
setValues(ch, offset, length);
} // (char[],int,int)
/**
* Constructs an XMLString structure with copies of the values in
* the given structure.
*
* Note: This does not copy the character array;
* only the reference to the array is copied.
*
* @param string The XMLString to copy.
*/
public XMLString(XMLString string) {
setValues(string);
} // (XMLString)
//
// Public methods
//
/**
* Initializes the contents of the XMLString structure with the
* specified values.
*
* @param ch The character array.
* @param offset The offset into the character array.
* @param length The length of characters from the offset.
*/
public void setValues(char[] ch, int offset, int length) {
this.ch = ch;
this.offset = offset;
this.length = length;
} // setValues(char[],int,int)
/**
* Initializes the contents of the XMLString structure with copies
* of the given string structure.
*
* Note: This does not copy the character array;
* only the reference to the array is copied.
*
* @param s
*/
public void setValues(XMLString s) {
setValues(s.ch, s.offset, s.length);
} // setValues(XMLString)
/** Resets all of the values to their defaults. */
public void clear() {
this.ch = null;
this.offset = 0;
this.length = -1;
} // clear()
/**
* Returns true if the contents of this XMLString structure and
* the specified array are equal.
*
* @param ch The character array.
* @param offset The offset into the character array.
* @param length The length of characters from the offset.
*/
public boolean equals(char[] ch, int offset, int length) {
if (ch == null) {
return false;
}
if (this.length != length) {
return false;
}
for (int i=0; i 0 ? new String(ch, offset, length) : "";
} // toString():String
} // class XMLString