mmk2410/morse-converter
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Documented the update class

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mmk2410 2015-06-09 10:39:09 +02:00
parent cbfc4f3f33
commit 17e2599c19
1 changed files with 39 additions and 6 deletions
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45
src/de/marcelkapfer/c/morseconverter/update/Update.java
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@ -8,11 +8,9 @@ import java.net.MalformedURLException;
import java.net.URL; import java.net.URL;
import java.nio.channels.Channels; import java.nio.channels.Channels;
import java.nio.channels.ReadableByteChannel; import java.nio.channels.ReadableByteChannel;
import java.nio.file.Files;
import java.util.logging.FileHandler;
/* /*
This is a Java application for converting writtenMorse and normal morse code. This is a class for updating a application.
Copyright (C) 2014-2015 Marcel Michael Kapfer Copyright (C) 2014-2015 Marcel Michael Kapfer
This program is free software: you can redistribute it and/or modify This program is free software: you can redistribute it and/or modify
@ -31,10 +29,18 @@ import java.util.logging.FileHandler;
marcelmichaelkapfer@yahoo.co.nz marcelmichaelkapfer@yahoo.co.nz
*/ */
public class Update { public class Update {
private static URL update; private static URL update;
/**
*
* Checks, if a connection to the server is possible
*
* Argument: The URL of the file with the version number as a string
*
*/
public static boolean isConnected(String url){ public static boolean isConnected(String url){
try { try {
update = new URL(url); update = new URL(url);
@ -46,6 +52,13 @@ public class Update {
} }
} }
/**
*
* Updates the application by overwriting the existing .jar file
*
* Arguments: The path where the jar file is located, the name of the jar file
*
*/
public static boolean update(String path, String filename){ public static boolean update(String path, String filename){
try { try {
ReadableByteChannel updateChannel = Channels.newChannel(update.openStream()); ReadableByteChannel updateChannel = Channels.newChannel(update.openStream());
@ -58,15 +71,35 @@ public class Update {
} }
} }
/**
*
* Get the version number of the latest version.
*
* Argument: The URL of the version file as a string
*
* It is highly recommended to give also the version number of the current version as an argument
*
*/
public static int getLatestVersion(String versionFile){
return getLatestVersion(versionFile, 0);
}
/**
*
* Get the version number of the latest version.
*
* Arguments: The URL of the version file as a string, the current version number
*
* The current version number is used as a backup if getting the actual version number fails.
*
*/
public static int getLatestVersion(String versionFile, int currentVersion){ public static int getLatestVersion(String versionFile, int currentVersion){
int latestVersion = currentVersion; int latestVersion = currentVersion;
try { try {
URL versionURL = new URL(versionFile); URL versionURL = new URL(versionFile);
BufferedReader versionReader = new BufferedReader(new InputStreamReader(versionURL.openStream())); BufferedReader versionReader = new BufferedReader(new InputStreamReader(versionURL.openStream()));
latestVersion = Integer.valueOf(versionReader.readLine()); latestVersion = Integer.valueOf(versionReader.readLine());
} catch (MalformedURLException e) { } catch (Exception e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace(); e.printStackTrace();
} }
return latestVersion; return latestVersion;