host/java/XMLFormatter.java

/* 
 * i-scream central monitoring system
 * Copyright (C) 2000-2002 i-scream
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

//---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 1.6 2001/03/19 17:30:17 ab11 Exp $
 */
class XMLFormatter {

//---FINAL ATTRIBUTES---

    /**
     * The current CVS revision of this class
     */
    public final String REVISION = "$Revision: 1.6 $";

//---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, String attributes){

        myStack = new Stack();
        xmlData = new String();
        xmlData = "<"+rootInfo+" "+attributes+">";
        hostInfo = rootInfo;
    }

    /**
    * 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 with attributes
   * 
   */
   public void addElement(String name, String attributes, String value){
        // check that the strings contain valid data first
        if (( name.length() != 0 ) && ( value.length() != 0 )){
            xmlData += "<"+name+" "+attributes+">"+value+"</"+name+">";
        }
    }

   /**
   * 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);
    }

    /**
    * addString, adds a string into the XML packet no further processing is carried out
    */
    public void addString(String name){
        xmlData += 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:	1.7
Committed:	Sat May 18 18:15:57 2002 UTC (22 years, 4 months ago) by tdb
Branch:	MAIN
Changes since 1.6:	+21 -2 lines
Log Message:	i-scream is now licensed under the GPL. I've added the GPL headers to every source file, and put a full copy of the license in the appropriate places. I think I've covered everything. This is going to be a mad commit ;)
#	User	Rev	Content
1	tdb	1.7	/*
2			* i-scream central monitoring system
3			* Copyright (C) 2000-2002 i-scream
4			*
5			* This program is free software; you can redistribute it and/or
6			* modify it under the terms of the GNU General Public License
7			* as published by the Free Software Foundation; either version 2
8			* of the License, or (at your option) any later version.
9			*
10			* This program is distributed in the hope that it will be useful,
11			* but WITHOUT ANY WARRANTY; without even the implied warranty of
12			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13			* GNU General Public License for more details.
14			*
15			* You should have received a copy of the GNU General Public License
16			* along with this program; if not, write to the Free Software
17			* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18			*/
19
20	ab11	1.1	//---PACKAGE DECLARATION---
21
22			//---IMPORTS---
23			import java.util.*;
24
25			/**
26			* Formats data into valid XML
27	ab11	1.6	* By calling either addElement() or addNest() you can use
28			* this class to create valid xml. When all elements have
29			* been added calling returnXML() will return a string
30			* containing the xml.
31	ab11	1.1	*
32			*
33	ab11	1.5	* @author $Author: ab11 $
34	tdb	1.7	* @version $Id: XMLFormatter.java,v 1.6 2001/03/19 17:30:17 ab11 Exp $
35	ab11	1.1	*/
36			class XMLFormatter {
37
38			//---FINAL ATTRIBUTES---
39
40			/**
41			* The current CVS revision of this class
42			*/
43	tdb	1.7	public final String REVISION = "$Revision: 1.6 $";
44	ab11	1.1
45			//---STATIC METHODS---
46
47			//---CONSTRUCTORS---
48
49			/**
50			* Public Constructor for the class
51			* Takes in one arguement which can contain any valid non xml character ( "<",">" )
52			* an example for rootInfo would be "Host"
53			*/
54	ab11	1.4	public XMLFormatter(String rootInfo, String attributes){
55
56			myStack = new Stack();
57			xmlData = new String();
58			xmlData = "<"+rootInfo+" "+attributes+">";
59			hostInfo = rootInfo;
60			}
61
62			/**
63			* Public Constructor for the class
64			* Takes in one arguement which can contain any valid non xml character ( "<",">" )
65			* an example for rootInfo would be "Host"
66			*/
67	ab11	1.1	public XMLFormatter(String rootInfo){
68			myStack = new Stack();
69			xmlData = new String();
70			xmlData = "<"+rootInfo+">";
71			hostInfo = rootInfo;
72			}
73
74			/**
75			* Public no-arg Constructor for the class
76			* Does not enclose the XML in <data></data> where data is a wrapper
77			*/
78			public XMLFormatter(){
79			myStack = new Stack();
80			xmlData = new String();
81			hostInfo = null;
82			}
83
84			//---PUBLIC METHODS---
85	ab11	1.4
86			/**
87			* addEement, adds an element to the XML string with attributes
88			*
89			*/
90			public void addElement(String name, String attributes, String value){
91			// check that the strings contain valid data first
92			if (( name.length() != 0 ) && ( value.length() != 0 )){
93			xmlData += "<"+name+" "+attributes+">"+value+"</"+name+">";
94			}
95			}
96	ab11	1.1
97			/**
98			* addEement, adds an element to the XML string
99			*
100			*/
101			public void addElement(String name, String value){
102			// check that the strings contain valid data first
103			if (( name.length() != 0 ) && ( value.length() != 0 )){
104			xmlData += "<"+name+">"+value+"</"+name+">";
105			}
106			}
107
108			/**
109			* addNest, adds a nest to the XML and all objects (elements or nests) that
110			* are added will be contained within this nest until closeNest() is called
111			*
112			*/
113			public void addNest(String name){
114			xmlData += "<"+name+">";
115			myStack.push(name);
116			}
117	ab11	1.2
118			/**
119			* addString, adds a string into the XML packet no further processing is carried out
120			*/
121			public void addString(String name){
122			xmlData += name;
123			}
124
125	ab11	1.1
126			/**
127			* closeNest will close the currently opened nest (by writing </nest name> to
128			* the xml string.
129			* If already at the root nest then this command is ignored
130			*
131			*/
132			public void closeNest(){
133
134			if ( !myStack.empty() ){
135			String tmp = (String) myStack.pop();
136			xmlData += "</"+tmp+">";
137			}
138
139			}
140
141			/**
142			* ReturnXML returns a valid XML string made out of all elements and nests
143			* added since this objects construction.
144			* Will close any currently open nests before returning.
145			*/
146			public String returnXML(){
147
148			// remember to close any open nests first =)
149			while ( !myStack.empty() ){
150			closeNest();
151			}
152
153			// add on HOSTinfo if it is defined
154			if ( hostInfo != null ){
155			xmlData += "</"+hostInfo+">";
156			}
157
158			return xmlData;
159
160			}
161
162			//---PRIVATE METHODS---
163
164			//---ACCESSOR/MUTATOR METHODS---
165
166			//---ATTRIBUTES---
167
168			// the string that will be returned in the end
169			private String xmlData;
170			// a stack object to hold the opened nest object
171			private Stack myStack;
172			// a string to hold the hostInfo
173			private String hostInfo;
174
175
176			//---STATIC ATTRIBUTES---
177
178			} // class