implementing XSD parser

diff --git a/src/main/java/eu/svjatoslav/inspector/xml/xsd/Main.java b/src/main/java/eu/svjatoslav/inspector/xml/xsd/Main.java
index 9ecb76e..d0093f4 100644 (file)
--- a/src/main/java/eu/svjatoslav/inspector/xml/xsd/Main.java
+++ b/src/main/java/eu/svjatoslav/inspector/xml/xsd/Main.java
@@ -1,8 +1,16 @@
 package eu.svjatoslav.inspector.xml.xsd;
 
+import java.io.FileNotFoundException;
+
 public class Main {
 
-       public static void main(final String[] args) {
+       public static void main(final String[] args) throws FileNotFoundException {
+
+               final XSD xsd = new XSD();
+
+               xsd.parse("/home/n0/Desktop/MeterSchema.xsd");
+
+               System.out.println(xsd);
 
        }
 

diff --git a/src/main/java/eu/svjatoslav/inspector/xml/xsd/XSD.java b/src/main/java/eu/svjatoslav/inspector/xml/xsd/XSD.java
new file mode 100644 (file)
index 0000000..3d5ff45
--- /dev/null
+++ b/src/main/java/eu/svjatoslav/inspector/xml/xsd/XSD.java
@@ -0,0 +1,84 @@
+package eu.svjatoslav.inspector.xml.xsd;
+
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.HashMap;
+import java.util.Map;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+
+import org.w3c.dom.Document;
+import org.xml.sax.SAXException;
+
+public class XSD {
+
+       private static final String XMLNS_PREFIX = "xmlns:";
+       Map<String, String> namespaces = new HashMap<String, String>();
+
+       private void detectNamespaces(final XmlElement xsdSchema) {
+               for (final String attributeName : xsdSchema.getAttributeNames())
+
+                       if (attributeName.startsWith(XMLNS_PREFIX)) {
+                               final String nameSpaceName = attributeName
+                                               .substring(XMLNS_PREFIX.length());
+                               namespaces.put(nameSpaceName,
+                                               xsdSchema.getAttributeValue(attributeName));
+                       }
+       }
+
+       public void parse(final InputStream inputStream) {
+
+               final DocumentBuilderFactory builderFactory = DocumentBuilderFactory
+                               .newInstance();
+
+               DocumentBuilder builder = null;
+               try {
+                       builder = builderFactory.newDocumentBuilder();
+               } catch (final ParserConfigurationException e) {
+                       e.printStackTrace();
+               }
+
+               Document document;
+               try {
+                       document = builder.parse(inputStream);
+               } catch (final SAXException e) {
+                       e.printStackTrace();
+                       return;
+               } catch (final IOException e) {
+                       e.printStackTrace();
+                       return;
+               }
+
+               final XmlElement xsdSchema = new XmlElement(
+                               document.getDocumentElement());
+
+               detectNamespaces(xsdSchema);
+
+               System.out.println(xsdSchema.toString());
+       }
+
+       public void parse(final String filePath) throws FileNotFoundException {
+
+               final FileInputStream inputStream = new FileInputStream(filePath);
+
+               parse(inputStream);
+       }
+
+       @Override
+       public String toString() {
+               final StringBuffer result = new StringBuffer();
+
+               result.append("namespaces:\n");
+
+               for (final Map.Entry<String, String> entry : namespaces.entrySet())
+                       result.append("    " + entry.getKey() + " = " + entry.getValue()
+                                       + "\n");
+
+               return result.toString();
+       }
+
+}

diff --git a/src/main/java/eu/svjatoslav/inspector/xml/xsd/XmlElement.java b/src/main/java/eu/svjatoslav/inspector/xml/xsd/XmlElement.java
new file mode 100644 (file)
index 0000000..6863fd4
--- /dev/null
+++ b/src/main/java/eu/svjatoslav/inspector/xml/xsd/XmlElement.java
@@ -0,0 +1,53 @@
+package eu.svjatoslav.inspector.xml.xsd;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.w3c.dom.Element;
+import org.w3c.dom.NamedNodeMap;
+import org.w3c.dom.Node;
+
+public class XmlElement {
+
+       Element element;
+
+       public XmlElement(final Element element) {
+               this.element = element;
+       }
+
+       public List<String> getAttributeNames() {
+               final ArrayList<String> result = new ArrayList<String>();
+
+               final NamedNodeMap attributes = element.getAttributes();
+
+               for (int i = 0; i < attributes.getLength(); i++) {
+                       final Node node = attributes.item(i);
+
+                       result.add(node.getNodeName());
+               }
+
+               return result;
+       }
+
+       public String getAttributeValue(final String attributeName) {
+               return element.getAttribute(attributeName);
+       }
+
+       @Override
+       public String toString() {
+               final StringBuffer result = new StringBuffer();
+
+               result.append("node name: " + element.getNodeName() + "\n");
+
+               final NamedNodeMap attributes = element.getAttributes();
+
+               for (int i = 0; i < attributes.getLength(); i++) {
+                       final Node node = attributes.item(i);
+
+                       result.append("    " + node.getNodeName() + "\n");
+               }
+
+               return result.toString();
+       }
+
+}