Jump to content
  • 0
Sign in to follow this  
Sketpa

PI Webclient, Why isn't it showing the download cache?

Question

Hey, I followed a tutorial & it didn't work.

I'm getting a plain white screen on run with no errors, isn't it men't to show it downloading the cache?

I'm using Enhanced PI client btw.

For more information add my msn: [email][email protected][/email]

Thanks.

Share this post


Link to post
Share on other sites

4 answers to this question

Recommended Posts

  • 0
Post your cachedownloader class, and I'll be glad to help.

Share this post


Link to post
Share on other sites
  • 0
[quote name='Compulsion']Post your cachedownloader class, and I'll be glad to help.[/QUOTE]

Please add my msn: [email][email protected][/email]

Share this post


Link to post
Share on other sites
  • 0
Here's the cachedownloader class:

[code]
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.io.FileWriter;
import java.io.BufferedWriter;
import java.io.BufferedOutputStream;
import java.io.BufferedInputStream;
import java.io.FileOutputStream;
import java.io.FileInputStream;
import java.io.InputStream;
import java.net.URLConnection;
import java.net.URL;
import java.util.zip.ZipFile;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.Enumeration;

import sign.signlink;

public class CacheDownloader {

private client client;

private final int BUFFER = 1024;

private final int VERSION = 1; // Version of cache
private String cacheLink = "http://eps-world.org/EPSCACHE.zip"; // Link to cache

private String fileToExtract = getCacheDir() + getArchivedName();

public CacheDownloader(client client) {
this.client = client;
}

private void drawLoadingText(String text) {
client.drawLoadingText(20, text);
//System.out.println(text);
}


private void drawLoadingText(int amount, String text) {
client.drawLoadingText(amount, text);
//System.out.println(text);
}

private String getCacheDir() {
return signlink.findcachedir();
}

private String getCacheLink() {
return cacheLink;
}

private int getCacheVersion() {
return VERSION;
}

public CacheDownloader downloadCache() {
try {
File location = new File(getCacheDir());
File version = new File(getCacheDir() + "/cacheVersion" + getCacheVersion() + ".dat");

if(!location.exists()) {
//drawLoadingText("Loading new Updates....");
downloadFile(getCacheLink(), getArchivedName());

unZip();
//System.out.println("UNZIP");

BufferedWriter versionFile = new BufferedWriter(new FileWriter(getCacheDir() + "/cacheVersion" + getCacheVersion() + ".dat"));
versionFile.close();
deleteZIP(getArchivedName());
} else {
if(!version.exists()) {
//drawLoadingText("~ First Time Installation, Only Once! ~");
downloadFile(getCacheLink(), getArchivedName());

unZip();
//System.out.println("UNZIP");

BufferedWriter versionFile = new BufferedWriter(new FileWriter(getCacheDir() + "/cacheVersion" + getCacheVersion() + ".dat"));
versionFile.close();
deleteZIP(getArchivedName());

} else {
return null;
}
}
} catch(Exception e) {

}
return null;
}

private void downloadFile(String adress, String localFileName) {
OutputStream out = null;
URLConnection conn;
InputStream in = null;

try {

URL url = new URL(adress);
out = new BufferedOutputStream(
new FileOutputStream(getCacheDir() + "/" +localFileName));

conn = url.openConnection();
in = conn.getInputStream();

byte[] data = new byte[BUFFER];

int numRead;
long numWritten = 0;
int length = conn.getContentLength();


while((numRead = in.read(data)) != -1) {
out.write(data, 0, numRead);
numWritten += numRead;
int percentage = (int)(((double)numWritten / (double)length) * 100D);
drawLoadingText(percentage, "Downloading Cache " + percentage + "%..");

}

System.out.println(localFileName + "\t" + numWritten);
drawLoadingText("Unpacking..");

} catch (Exception exception) {
exception.printStackTrace();
} finally {
try {
if (in != null) {
in.close();
}
if (out != null) {
out.close();
}
} catch (IOException ioe) {
}
}

}

private String getArchivedName() {
int lastSlashIndex = getCacheLink().lastIndexOf('/');
if (lastSlashIndex >= 0
&& lastSlashIndex < getCacheLink().length() -1) {
return getCacheLink().substring(lastSlashIndex + 1);
} else {
//System.err.println("error retreiving archivaed name.");
}
return "";
}




private void unZip() {

try {
InputStream in =
new BufferedInputStream(new FileInputStream(fileToExtract));
ZipInputStream zin = new ZipInputStream(in);
ZipEntry e;

while((e=zin.getNextEntry()) != null) {

if(e.isDirectory()) {
(new File(getCacheDir() + e.getName())).mkdir();
} else {

if (e.getName().equals(fileToExtract)) {
unzip(zin, fileToExtract);
break;
}
unzip(zin, getCacheDir() + e.getName());
}
//System.out.println("unzipping2 " + e.getName());
}
zin.close();

} catch(Exception e) {
e.printStackTrace();
}
}

private void deleteZIP(String fileName){
// A File object to represent the filename
File f = new File(getCacheDir() + fileName);

// Make sure the file or directory exists and isn't write protected
if (!f.exists())
throw new IllegalArgumentException(
"Delete: no such file or directory: " + fileName);

if (!f.canWrite())
throw new IllegalArgumentException("Delete: write protected: "
+ fileName);

// If it is a directory, make sure it is empty
if (f.isDirectory()) {
String[] files = f.list();
if (files.length > 0)
throw new IllegalArgumentException(
"Delete: directory not empty: " + fileName);
}

// Attempt to delete it
boolean success = f.delete();

if (!success)
throw new IllegalArgumentException("Delete: deletion failed");

}

private void unzip(ZipInputStream zin, String s)
throws IOException {

FileOutputStream out = new FileOutputStream(s);
//System.out.println("unzipping " + s);
byte [] b = new byte[BUFFER];
int len = 0;

while ((len = zin.read(b)) != -1) {
out.write(b,0,len);
}
out.close();
}
}
[/code]

Share this post


Link to post
Share on other sites
  • 0
bump:)

Share this post


Link to post
Share on other sites
Sign in to follow this  

×