host/java/XMLFormatter.java

//---PACKAGE DECLARATION---

//---IMPORTS---
import java.util.*;

/**
 * Formats data into valid XML
 * By calling either addElement() or addNest() you can use this
 * class to create valid xml. When all elements have been added 
 * calling returnXML() will return a string containing the xml.
 * 
 *
 * @author  $Author: ab11 $
 * @version $Id: XMLFormatter.java,v 1.5 27/11/00 16:53 ab11 Exp $
 */
class XMLFormatter {

//---FINAL ATTRIBUTES---

    /**
     * The current CVS revision of this class
     */
    public final String REVISION = "$Revision: 1.0 $";

//---STATIC METHODS---

//---CONSTRUCTORS---

    /**
    * Public Constructor for the class
    * Takes in one arguement which can contain any valid non xml character ( "<",">" )
    * an example for rootInfo would be "Host"
    */
    public XMLFormatter(String rootInfo){

        myStack = new Stack();
        xmlData = new String();
        xmlData = "<"+rootInfo+">";
        hostInfo = rootInfo;
    }
    
    /**
    * Public no-arg Constructor for the class
    * Does not enclose the XML in <data></data> where data is a wrapper
    */
    public XMLFormatter(){
        myStack = new Stack();
        xmlData = new String();
        hostInfo = null;
    }        


//---PUBLIC METHODS---

   /**
   * addEement, adds an element to the XML string
   * 
   */
   public void addElement(String name, String value){
        // check that the strings contain valid data first
        if (( name.length() != 0 ) && ( value.length() != 0 )){
            xmlData += "<"+name+">"+value+"</"+name+">";
        }
    }

    /**
    * addNest, adds a nest to the XML and all objects (elements or nests) that
    * are added will be contained within this nest until closeNest() is called
    * 
    */
    public void addNest(String name){
        xmlData += "<"+name+">";
        myStack.push(name);
    }

    /**
    * closeNest will close the currently opened nest (by writing </nest name> to 
    * the xml string. 
    * If already at the root nest then this command is ignored
    * 
    */
    public void closeNest(){

        if ( !myStack.empty() ){
                String tmp = (String) myStack.pop();
                xmlData += "</"+tmp+">";
        }

    }
   
    /**
    * ReturnXML returns a valid XML string made out of all elements and nests
    * added since this objects construction. 
    * Will close any currently open nests before returning.
    */
    public String returnXML(){

        // remember to close any open nests first =)
        while ( !myStack.empty() ){
            closeNest();
        }
        
        // add on HOSTinfo if it is defined
        if ( hostInfo != null ){
            xmlData += "</"+hostInfo+">";
        }
    
        return xmlData;

    }

//---PRIVATE METHODS---

//---ACCESSOR/MUTATOR METHODS---

//---ATTRIBUTES---

    // the string that will be returned in the end
    private String xmlData;
    // a stack object to hold the opened nest object
    private Stack myStack;
    // a string to hold the hostInfo
    private String hostInfo;


//---STATIC ATTRIBUTES---

} // class
Revision:	1.1
Committed:	Mon Nov 27 19:44:00 2000 UTC (23 years, 9 months ago) by ab11
Branch:	MAIN
Log Message:	Initial Version - Probably final version as well
#	User	Rev	Content
1	ab11	1.1	//---PACKAGE DECLARATION---
2
3			//---IMPORTS---
4			import java.util.*;
5
6			/**
7			* Formats data into valid XML
8			* By calling either addElement() or addNest() you can use this
9			* class to create valid xml. When all elements have been added
10			* calling returnXML() will return a string containing the xml.
11			*
12			*
13			* @author $Author: ab11 $
14			* @version $Id: XMLFormatter.java,v 1.5 27/11/00 16:53 ab11 Exp $
15			*/
16			class XMLFormatter {
17
18			//---FINAL ATTRIBUTES---
19
20			/**
21			* The current CVS revision of this class
22			*/
23			public final String REVISION = "$Revision: 1.0 $";
24
25			//---STATIC METHODS---
26
27			//---CONSTRUCTORS---
28
29			/**
30			* Public Constructor for the class
31			* Takes in one arguement which can contain any valid non xml character ( "<",">" )
32			* an example for rootInfo would be "Host"
33			*/
34			public XMLFormatter(String rootInfo){
35
36			myStack = new Stack();
37			xmlData = new String();
38			xmlData = "<"+rootInfo+">";
39			hostInfo = rootInfo;
40			}
41
42			/**
43			* Public no-arg Constructor for the class
44			* Does not enclose the XML in <data></data> where data is a wrapper
45			*/
46			public XMLFormatter(){
47			myStack = new Stack();
48			xmlData = new String();
49			hostInfo = null;
50			}
51
52
53			//---PUBLIC METHODS---
54
55			/**
56			* addEement, adds an element to the XML string
57			*
58			*/
59			public void addElement(String name, String value){
60			// check that the strings contain valid data first
61			if (( name.length() != 0 ) && ( value.length() != 0 )){
62			xmlData += "<"+name+">"+value+"</"+name+">";
63			}
64			}
65
66			/**
67			* addNest, adds a nest to the XML and all objects (elements or nests) that
68			* are added will be contained within this nest until closeNest() is called
69			*
70			*/
71			public void addNest(String name){
72			xmlData += "<"+name+">";
73			myStack.push(name);
74			}
75
76			/**
77			* closeNest will close the currently opened nest (by writing </nest name> to
78			* the xml string.
79			* If already at the root nest then this command is ignored
80			*
81			*/
82			public void closeNest(){
83
84			if ( !myStack.empty() ){
85			String tmp = (String) myStack.pop();
86			xmlData += "</"+tmp+">";
87			}
88
89			}
90
91			/**
92			* ReturnXML returns a valid XML string made out of all elements and nests
93			* added since this objects construction.
94			* Will close any currently open nests before returning.
95			*/
96			public String returnXML(){
97
98			// remember to close any open nests first =)
99			while ( !myStack.empty() ){
100			closeNest();
101			}
102
103			// add on HOSTinfo if it is defined
104			if ( hostInfo != null ){
105			xmlData += "</"+hostInfo+">";
106			}
107
108			return xmlData;
109
110			}
111
112			//---PRIVATE METHODS---
113
114			//---ACCESSOR/MUTATOR METHODS---
115
116			//---ATTRIBUTES---
117
118			// the string that will be returned in the end
119			private String xmlData;
120			// a stack object to hold the opened nest object
121			private Stack myStack;
122			// a string to hold the hostInfo
123			private String hostInfo;
124
125
126			//---STATIC ATTRIBUTES---
127
128			} // class