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New option added : Save/load configuration file (XML format) #3

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New option added : Save/load configuration file (XML format) #3

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142 changes: 142 additions & 0 deletions src/com/elezeta/jarspliceplus/ConfigParser.java
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package com.elezeta.jarspliceplus;

import java.io.File;

import javax.swing.JOptionPane;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

import org.ninjacave.jarsplice.gui.JarSpliceFrame;
import org.w3c.dom.Attr;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

public class ConfigParser {

public static final String extension = ".xml";
protected static final String el_root = "JarSplicePlusConfig";
protected static final String el_jar = "Jar";
protected static final String el_native = "Native";
protected static final String at_path = "Path";
protected static final String at_main = "MainClass";
protected static final String at_vmArgs = "VM_Arguments";

protected final JarSpliceFrame jarSpliceFrame;

public ConfigParser(JarSpliceFrame frame) {
this.jarSpliceFrame = frame;
}

public void saveXMLFile(File file) {
try {
// create document :
DocumentBuilderFactory documentFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder documentBuilder = documentFactory.newDocumentBuilder();

// define root elements :
Document document = documentBuilder.newDocument();
Element rootElement = document.createElement(el_root);
document.appendChild(rootElement);

// Save jars :
String[] jarFiles = jarSpliceFrame.getJarsList();
if(jarFiles != null) {
int nbJars = jarFiles.length;
for(int i=0; i<nbJars; i++) {
Element jarEl = document.createElement(el_jar);
rootElement.appendChild(jarEl);
setElementAttribute(document, jarEl, at_path, jarFiles[i]);
}
}

// Save natives :
String[] nativeFiles = jarSpliceFrame.getNativesList();
if(nativeFiles != null) {
int nbNatives = nativeFiles.length;
for(int i=0; i<nbNatives; i++) {
Element nativeEl = document.createElement(el_native);
rootElement.appendChild(nativeEl);
setElementAttribute(document, nativeEl, at_path, nativeFiles[i]);
}
}

// Save Main class and VM args :
String mainClass = jarSpliceFrame.getMainClass();
if(mainClass != null)
setElementAttribute(document, rootElement, at_main, mainClass);
String vmArgs = jarSpliceFrame.getVmArgs();
if(vmArgs != null)
setElementAttribute(document, rootElement, at_vmArgs, vmArgs);

// creating and writing into xml file
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");
DOMSource domSource = new DOMSource(document);
StreamResult streamResult = new StreamResult(file);
transformer.transform(domSource, streamResult);
System.out.println("Configuration file saved successfully !");
}
catch(Exception e) {
e.printStackTrace();
JOptionPane.showMessageDialog(jarSpliceFrame.getFrame(), "ERROR, could not save file !", "", JOptionPane.ERROR_MESSAGE);
}
}

public void loadXMLFile(File file) {
try {
DocumentBuilderFactory documentFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder documentBuilder = documentFactory.newDocumentBuilder();
Document doc = documentBuilder.parse(file);
doc.getDocumentElement().normalize();
Element rootEl = (Element) doc.getElementsByTagName(el_root).item(0);

// Load Jars :
NodeList jarList = rootEl.getElementsByTagName(el_jar);
int nbJars = jarList.getLength();
String[] jarPath = new String[nbJars];
for(int i=0; i<nbJars; i++) {
Element jarEl = (Element) jarList.item(i);
jarPath[i] = jarEl.getAttribute(at_path);
}
jarSpliceFrame.setSelectedJars(jarPath);

// Load Natives :
NodeList nativeList = rootEl.getElementsByTagName(el_native);
int nbNatives = nativeList.getLength();
String[] natives = new String[nbNatives];
for(int i=0; i<nbNatives; i++) {
Element nativeEl = (Element) nativeList.item(i);
natives[i] = nativeEl.getAttribute(at_path);
}
jarSpliceFrame.setSelectedNatives(natives);

// Load Main class and VM args :
if(rootEl.hasAttribute(at_main)) {
String mainClass = rootEl.getAttribute(at_main);
jarSpliceFrame.setMainClass(mainClass);
}
if(rootEl.hasAttribute(at_vmArgs)) {
String vmArgs = rootEl.getAttribute(at_vmArgs);
jarSpliceFrame.setVmArgs(vmArgs);
}
}
catch(Exception e) {
e.printStackTrace();
JOptionPane.showMessageDialog(jarSpliceFrame.getFrame(), "ERROR, could not read file !", "", JOptionPane.ERROR_MESSAGE);
}
}

public static void setElementAttribute(Document document, Element element, String attr_name, String attr_value) {
Attr attr = document.createAttribute(attr_name);
attr.setValue(attr_value);
element.setAttributeNode(attr);
}
}
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