WebSVN – HomeAutomation – Diff – /trunk/MacBeth/src/Macbeth/XML/XMLParser.java


/*
 * XMLParser.java
 *
 * Created on den 27 augusti 2003, 17:18
 */
package Macbeth.XML;
 
import java.io.*;
import org.xml.sax.*;
import org.xml.sax.helpers.DefaultHandler;
import javax.xml.parsers.SAXParserFactory;
import javax.xml.parsers.SAXParser;
import java.util.*;
 
/**
 * A helper class for parsing XML files.
 * @author Jimmy
 */
public class XMLParser extends DefaultHandler {
 
    private XMLDataHandler dataHandler;
    private SAXParserFactory factory;
    private SAXParser saxParser;
 
    /**
     * Creates a new instance of XMLParser.
     * @param dataHandler The XMLDataHandler that should be
     * invoked when XML data is being parsed.
     */
    public XMLParser(XMLDataHandler dataHandler) {
        this.dataHandler = dataHandler;
        try {
            //use the default (non-validating) parser
            factory = SAXParserFactory.newInstance();
           
            //create a parser
            saxParser = factory.newSAXParser();
           
            XMLReader parser = saxParser.getXMLReader();
            try {
                parser.setFeature("http://xml.org/sax/features/validation", false);
                //parser.setFeature("http://xml.org/sax/features/external-general-entities", false);
                //parser.setFeature("http://xml.org/sax/features/external-parameter-entities", false);
                } catch (SAXNotRecognizedException e) {
                  System.err.println("Unknown feature specified: " + e.getMessage());
                } catch (SAXNotSupportedException e) {
                  System.err.println("Unsupported feature specified: " + e.getMessage());
                } catch (SAXException e) {
                  System.err.println("Error in setting feature: " + e.getMessage());
                }
           
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
 
    /**
     * Parses an XML-file and invokes the XML data handler for each tag.
     * @param xmlfile The XML-file to parse.
     * @throws FileNotFoundException If the file isn't found.
     * @throws IOException If an I/O-error occurs while reading file.
     * @throws SAXException If a parse error occurs. Probably
     * because of bad XML-syntax in file.
     */
    public void parseFile(String xmlfile) throws FileNotFoundException,IOException,SAXException {
        saxParser.parse(new File(xmlfile), this);
    }
 
    /**
     * Parses an XML-string and invokes the XML data handler for each tag.
     * @param xmlstring The XML-string to parse.
     * @throws IOException If an IO error occured while reading the string.
     * @throws SAXException If a parse error occured. Probably because of bad syntax in file.
     */
    public void parseString(String xmlstring) throws IOException, SAXException {
        ByteArrayInputStream xmlStream = new ByteArrayInputStream(xmlstring.getBytes());
        InputSource xmlSource = new InputSource(xmlStream);
        saxParser.parse(xmlSource, this);
    }
 
    /**
     * Called by SAX parser when start of XML-document has been reached.
     */
    public void startDocument() {
        dataHandler.XMLdocumentStart();
    }
 
    /**
     * Called by SAX parser when end of XML-document has been reached.
     */
    public void endDocument() {
        dataHandler.XMLdocumentEnd();
    }
 
    /**
     * Called by SAX parser when start of an XML-element was found.
     * TODO: describe these parameters
     * @param namespaceURI
     * @param lName
     * @param qName
     * @param attrs
     */
    public void startElement(String namespaceURI, String lName, String qName, Attributes attrs) {
        //get element name
        String elementName = lName;
        if (elementName.equals("")) {
            elementName = qName; // namespaceAware = false
        }
        //get attributes
        HashMap attributes = new HashMap(256);
        if (attrs != null) {
            for (int i=0; i<attrs.getLength(); i++) {
                String attributeName = attrs.getLocalName(i); // Attr name
                if (attributeName.equals("")) attributeName = attrs.getQName(i);
                String attributeValue = attrs.getValue(i);
                attributes.put(attributeName, attributeValue);
            }
        }
        dataHandler.XMLstartElement(elementName, attributes);
    }
 
    /**
     * Called by SAX parser when end of an XML-element was found.
     * TODO: describe these parameters
     * @param namespaceURI
     * @param sName
     * @param qName
     * @throws SAXException
     */
    public void endElement(String namespaceURI, String sName, String qName) throws SAXException {
        String name;
        if (sName.equals("")) {
            name = qName;
        } else {
            name = sName;
        }
        dataHandler.XMLendElement(name);
    }
 
    /**
     * Called by SAX parser when characters were found inside an element.
     * TODO: describe these parameters
     * @param buf
     * @param offset
     * @param len
     * @throws SAXException
     */
    public void characters(char buf[], int offset, int len) throws SAXException {
        String s = new String(buf, offset, len);
        dataHandler.XMLelementData(s);
    }
 
}
 

Subversion Repositories HomeAutomation

(root)/trunk/MacBeth/src/Macbeth/XML/XMLParser.java @ 73 – Rev 15 → 73

Rev 15		Rev 73
1	/*	1	/*
2	* XMLParser.java	2	* XMLParser.java
3	*	3	*
4	* Created on den 27 augusti 2003, 17:18	4	* Created on den 27 augusti 2003, 17:18
5	*/	5	*/
6	package Macbeth.XML;	6	package Macbeth.XML;
7		7
8	import java.io.*;	8	import java.io.*;
9	import org.xml.sax.*;	9	import org.xml.sax.*;
10	import org.xml.sax.helpers.DefaultHandler;	10	import org.xml.sax.helpers.DefaultHandler;
11	import javax.xml.parsers.SAXParserFactory;	11	import javax.xml.parsers.SAXParserFactory;
12	import javax.xml.parsers.SAXParser;	12	import javax.xml.parsers.SAXParser;
13	import java.util.*;	13	import java.util.*;
14		14
15	/**	15	/**
16	* A helper class for parsing XML files.	16	* A helper class for parsing XML files.
17	* @author Jimmy	17	* @author Jimmy
18	*/	18	*/
19	public class XMLParser extends DefaultHandler {	19	public class XMLParser extends DefaultHandler {
20		20
21	private XMLDataHandler dataHandler;	21	private XMLDataHandler dataHandler;
22	private SAXParserFactory factory;	22	private SAXParserFactory factory;
23	private SAXParser saxParser;	23	private SAXParser saxParser;
24		24
25	/**	25	/**
26	* Creates a new instance of XMLParser.	26	* Creates a new instance of XMLParser.
27	* @param dataHandler The XMLDataHandler that should be	27	* @param dataHandler The XMLDataHandler that should be
28	* invoked when XML data is being parsed.	28	* invoked when XML data is being parsed.
29	*/	29	*/
30	public XMLParser(XMLDataHandler dataHandler) {	30	public XMLParser(XMLDataHandler dataHandler) {
31	this.dataHandler = dataHandler;	31	this.dataHandler = dataHandler;
32	try {	32	try {
33	//use the default (non-validating) parser	33	//use the default (non-validating) parser
34	factory = SAXParserFactory.newInstance();	34	factory = SAXParserFactory.newInstance();
35		35
36	//create a parser	36	//create a parser
37	saxParser = factory.newSAXParser();	37	saxParser = factory.newSAXParser();
38		38
39	XMLReader parser = saxParser.getXMLReader();	39	XMLReader parser = saxParser.getXMLReader();
40	try {	40	try {
41	parser.setFeature("http://xml.org/sax/features/validation", false);	41	parser.setFeature("http://xml.org/sax/features/validation", false);
42	//parser.setFeature("http://xml.org/sax/features/external-general-entities", false);	42	//parser.setFeature("http://xml.org/sax/features/external-general-entities", false);
43	//parser.setFeature("http://xml.org/sax/features/external-parameter-entities", false);	43	//parser.setFeature("http://xml.org/sax/features/external-parameter-entities", false);
44	} catch (SAXNotRecognizedException e) {	44	} catch (SAXNotRecognizedException e) {
45	System.err.println("Unknown feature specified: " + e.getMessage());	45	System.err.println("Unknown feature specified: " + e.getMessage());
46	} catch (SAXNotSupportedException e) {	46	} catch (SAXNotSupportedException e) {
47	System.err.println("Unsupported feature specified: " + e.getMessage());	47	System.err.println("Unsupported feature specified: " + e.getMessage());
48	} catch (SAXException e) {	48	} catch (SAXException e) {
49	System.err.println("Error in setting feature: " + e.getMessage());	49	System.err.println("Error in setting feature: " + e.getMessage());
50	}	50	}
51		51
52	} catch (Exception e) {	52	} catch (Exception e) {
53	e.printStackTrace();	53	e.printStackTrace();
54	}	54	}
55	}	55	}
56		56
57	/**	57	/**
58	* Parses an XML-file and invokes the XML data handler for each tag.	58	* Parses an XML-file and invokes the XML data handler for each tag.
59	* @param xmlfile The XML-file to parse.	59	* @param xmlfile The XML-file to parse.
60	* @throws FileNotFoundException If the file isn't found.	60	* @throws FileNotFoundException If the file isn't found.
61	* @throws IOException If an I/O-error occurs while reading file.	61	* @throws IOException If an I/O-error occurs while reading file.
62	* @throws SAXException If a parse error occurs. Probably	62	* @throws SAXException If a parse error occurs. Probably
63	* because of bad XML-syntax in file.	63	* because of bad XML-syntax in file.
64	*/	64	*/
65	public void parseFile(String xmlfile) throws FileNotFoundException,IOException,SAXException {	65	public void parseFile(String xmlfile) throws FileNotFoundException,IOException,SAXException {
66	saxParser.parse(new File(xmlfile), this);	66	saxParser.parse(new File(xmlfile), this);
67	}	67	}
68		68
69	/**	69	/**
70	* Parses an XML-string and invokes the XML data handler for each tag.	70	* Parses an XML-string and invokes the XML data handler for each tag.
71	* @param xmlstring The XML-string to parse.	71	* @param xmlstring The XML-string to parse.
72	* @throws IOException If an IO error occured while reading the string.	72	* @throws IOException If an IO error occured while reading the string.
73	* @throws SAXException If a parse error occured. Probably because of bad syntax in file.	73	* @throws SAXException If a parse error occured. Probably because of bad syntax in file.
74	*/	74	*/
75	public void parseString(String xmlstring) throws IOException, SAXException {	75	public void parseString(String xmlstring) throws IOException, SAXException {
76	ByteArrayInputStream xmlStream = new ByteArrayInputStream(xmlstring.getBytes());	76	ByteArrayInputStream xmlStream = new ByteArrayInputStream(xmlstring.getBytes());
77	InputSource xmlSource = new InputSource(xmlStream);	77	InputSource xmlSource = new InputSource(xmlStream);
78	saxParser.parse(xmlSource, this);	78	saxParser.parse(xmlSource, this);
79	}	79	}
80		80
81	/**	81	/**
82	* Called by SAX parser when start of XML-document has been reached.	82	* Called by SAX parser when start of XML-document has been reached.
83	*/	83	*/
84	public void startDocument() {	84	public void startDocument() {
85	dataHandler.XMLdocumentStart();	85	dataHandler.XMLdocumentStart();
86	}	86	}
87		87
88	/**	88	/**
89	* Called by SAX parser when end of XML-document has been reached.	89	* Called by SAX parser when end of XML-document has been reached.
90	*/	90	*/
91	public void endDocument() {	91	public void endDocument() {
92	dataHandler.XMLdocumentEnd();	92	dataHandler.XMLdocumentEnd();
93	}	93	}
94		94
95	/**	95	/**
96	* Called by SAX parser when start of an XML-element was found.	96	* Called by SAX parser when start of an XML-element was found.
97	* TODO: describe these parameters	97	* TODO: describe these parameters
98	* @param namespaceURI	98	* @param namespaceURI
99	* @param lName	99	* @param lName
100	* @param qName	100	* @param qName
101	* @param attrs	101	* @param attrs
102	*/	102	*/
103	public void startElement(String namespaceURI, String lName, String qName, Attributes attrs) {	103	public void startElement(String namespaceURI, String lName, String qName, Attributes attrs) {
104	//get element name	104	//get element name
105	String elementName = lName;	105	String elementName = lName;
106	if (elementName.equals("")) {	106	if (elementName.equals("")) {
107	elementName = qName; // namespaceAware = false	107	elementName = qName; // namespaceAware = false
108	}	108	}
109	//get attributes	109	//get attributes
110	HashMap attributes = new HashMap(256);	110	HashMap attributes = new HashMap(256);
111	if (attrs != null) {	111	if (attrs != null) {
112	for (int i=0; i<attrs.getLength(); i++) {	112	for (int i=0; i<attrs.getLength(); i++) {
113	String attributeName = attrs.getLocalName(i); // Attr name	113	String attributeName = attrs.getLocalName(i); // Attr name
114	if (attributeName.equals("")) attributeName = attrs.getQName(i);	114	if (attributeName.equals("")) attributeName = attrs.getQName(i);
115	String attributeValue = attrs.getValue(i);	115	String attributeValue = attrs.getValue(i);
116	attributes.put(attributeName, attributeValue);	116	attributes.put(attributeName, attributeValue);
117	}	117	}
118	}	118	}
119	dataHandler.XMLstartElement(elementName, attributes);	119	dataHandler.XMLstartElement(elementName, attributes);
120	}	120	}
121		121
122	/**	122	/**
123	* Called by SAX parser when end of an XML-element was found.	123	* Called by SAX parser when end of an XML-element was found.
124	* TODO: describe these parameters	124	* TODO: describe these parameters
125	* @param namespaceURI	125	* @param namespaceURI
126	* @param sName	126	* @param sName
127	* @param qName	127	* @param qName
128	* @throws SAXException	128	* @throws SAXException
129	*/	129	*/
130	public void endElement(String namespaceURI, String sName, String qName) throws SAXException {	130	public void endElement(String namespaceURI, String sName, String qName) throws SAXException {
131	String name;	131	String name;
132	if (sName.equals("")) {	132	if (sName.equals("")) {
133	name = qName;	133	name = qName;
134	} else {	134	} else {
135	name = sName;	135	name = sName;
136	}	136	}
137	dataHandler.XMLendElement(name);	137	dataHandler.XMLendElement(name);
138	}	138	}
139		139
140	/**	140	/**
141	* Called by SAX parser when characters were found inside an element.	141	* Called by SAX parser when characters were found inside an element.
142	* TODO: describe these parameters	142	* TODO: describe these parameters
143	* @param buf	143	* @param buf
144	* @param offset	144	* @param offset
145	* @param len	145	* @param len
146	* @throws SAXException	146	* @throws SAXException
147	*/	147	*/
148	public void characters(char buf[], int offset, int len) throws SAXException {	148	public void characters(char buf[], int offset, int len) throws SAXException {
149	String s = new String(buf, offset, len);	149	String s = new String(buf, offset, len);
150	dataHandler.XMLelementData(s);	150	dataHandler.XMLelementData(s);
151	}	151	}
152		152
153	}	153	}
154		154