+++ /dev/null
-package com.tedpearson.util.update;
-
-import java.net.*;
-import java.io.*;
-import java.util.prefs.*;
-import java.awt.Component;
-import javax.swing.JOptionPane;
-import javax.swing.*;
-
-/*
- TODO:
- show update window with progress bar when updating (optionally)
-*/
-
-public class Updater {
- private int version = -1;
- private URL downloadURL;
- private static Updater updater = new Updater();
-
- public static Updater getUpdater() {
- return updater;
- }
-
- public boolean checkForUpdate(
- Component parentComponent,
- String updateUrl,
- int currentVersion) {
- return checkForUpdate(parentComponent, updateUrl, "this program", currentVersion, true);
- }
-
-
- /**
- * Just check to see if there is an update.
- */
- public boolean checkForUpdate(
- Component parentComponent,
- String updateUrl,
- String program,
- int currentVersion,
- boolean promptUser) {
- String node = "com/tedpearson/update";
- Preferences prefs = Preferences.userRoot().node(node);
- String update = prefs.get(updateUrl,"");
- if(update.equals("Never")) {
- return false;
- }
- if(!update.equals("Yes")) {
- if(!promptUser) {
- return false;
- }
- // first, confirm user wants to allow updates
- int option = JOptionPane.showOptionDialog(parentComponent,
- "Do you want to let " + program + " check for updates when it opens?",
- "Check for Updates?",
- 0, JOptionPane.QUESTION_MESSAGE,
- null, new String[] {"Yes","This Time","Not Now","Never"},"Yes");
- switch(option) {
- case 2:
- return false;
- case 3:
- prefs.put(updateUrl,"Never");
- return false;
- case 0:
- prefs.put(updateUrl,"Yes");
- case 1:
- }
- }
- // query the server to check the version number
- accessVersion(parentComponent, updateUrl);
- // System.out.println(version+","+currentVersion);
- if(version > currentVersion) {
- return true;
- } else {
- return false;
- }
- }
-
- public void checkAndUpdate(
- Component parentComponent,
- String updateUrl,
- String program,
- int currentVersion,
- boolean promptUser,
- String jar) {
- if(checkForUpdate(parentComponent, updateUrl, program, currentVersion, promptUser)) {
- updateJar(parentComponent, updateUrl, currentVersion, promptUser, jar);
- }
- }
-
- public void checkAndUpdate(
- Component parentComponent,
- String updateUrl,
- int currentVersion) {
- if(checkForUpdate(parentComponent, updateUrl, currentVersion)) {
- updateJar(parentComponent, updateUrl, currentVersion);
- }
- }
-
- public void updateJar(
- Component parentComponent,
- String updateUrl,
- int currentVersion) {
- updateJar(parentComponent, updateUrl, currentVersion, true, null);
- }
-
- public void updateJar(
- Component parentComponent,
- String updateUrl,
- int currentVersion,
- boolean promptUser,
- String jar) {
- try {
- accessVersion(parentComponent, updateUrl);
- // download new version
- File temp = File.createTempFile("com.tedpearson.updater.download",null);
- temp.deleteOnExit();
- URLConnection conn = downloadURL.openConnection();
- ProgressMonitorInputStream pmis = new ProgressMonitorInputStream(
- parentComponent,
- "Downloading program update",
- conn.getInputStream()
- );
- ProgressMonitor pm = pmis.getProgressMonitor();
- pm.setMillisToDecideToPopup(0);
- pm.setMillisToPopup(0);
- if(!promptUser) {
- pm.setMillisToDecideToPopup(Integer.MAX_VALUE);
- pm.setMillisToPopup(Integer.MAX_VALUE);
- }
- pm.setMaximum(conn.getHeaderFieldInt("Content-Length",0));
- copyFile(pmis, new FileOutputStream(temp));
- // replace old with new.
- if(jar == null) {
- jar = getClass().getProtectionDomain().getCodeSource().getLocation().getPath();
- }
- jar = jar.replaceAll("%20"," ");
- copyFile(new FileInputStream(temp), new FileOutputStream(new File(jar)));
- // remove temp file
- temp.delete();
- // launch new version and quit this one.
- ProcessBuilder pb = new ProcessBuilder("java","-jar",jar);
- pb.start();
- System.exit(0);
- // no new version
- } catch(Exception e) {
- // errors.
- e.printStackTrace();
- // show error here.
- if(promptUser) {
- JOptionPane.showMessageDialog(parentComponent, "There was an error while trying to update.",
- "Error", JOptionPane.ERROR_MESSAGE);
- }
- }
- }
-
- private void accessVersion(Component parentComponent, String updateUrl) {
- if(version != -1) return;
- try {
- URL url = new URL(updateUrl);
- BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream()));
- version = Integer.parseInt(br.readLine());
- downloadURL = new URL(br.readLine());
- } catch(Exception e) {
- // errors.
- e.printStackTrace();
- // show error here.
- JOptionPane.showMessageDialog(parentComponent, "There was an error while trying to update.",
- "Error", JOptionPane.ERROR_MESSAGE);
- }
- }
-
- /**
- * Utility method to copy a file. I can't believe java doesn't have anything
- * built-in to do something this simple with less code. Other than channels, that is.
- *
- * @param in stream to read file from
- * @param out stream to write file to
- */
- public static void copyFile(InputStream in, OutputStream out) throws IOException {
- byte[] buf = new byte[1024];
- int len;
- while ((len = in.read(buf)) > 0) {
- out.write(buf, 0, len);
-
- }
- in.close();
- out.close();
- }
-}
\ No newline at end of file
~yarrgweb / jarrg-owen.git / blobdiff