import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
/**
* Enchanced cache downloader
* Handles cache downloading & unzipping
* @author Gabriel Hannason
*/
public class CacheDownloader {
public static void init() {
try {
for(CACHE_DOWNLOAD_FILES cacheFile : CACHE_DOWNLOAD_FILES.values()) {
boolean exists = new File(signlink.findcachedir() + cacheFile.identifier).exists();
if(!exists) {
int total = cacheFile.file.length;
int current = 1;
for(String file : cacheFile.file) {
downloadFile(cacheFile, file, current, total);
if(file.endsWith(".zip")) {
unzip(new File(signlink.findcachedir() + file));
}
current ++;
}
new File(signlink.findcachedir() + cacheFile.identifier).createNewFile();
}
}
} catch(Exception e) {
e.printStackTrace();
}
}
public static void downloadFile(CACHE_DOWNLOAD_FILES cacheFile, String file, int current, int total) throws IOException {
String fileURL = cacheFile.link;
String downloadingText = Client.optimizeText(cacheFile.toString().toLowerCa se());
URL url = new URL(fileURL);
HttpURLConnection httpConn = (HttpURLConnection) url.openConnection();
httpConn.addRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:25.0) Gecko/20100101 Firefox/25.0");
int responseCode = httpConn.getResponseCode();
// always check HTTP response code first
if (responseCode == HttpURLConnection.HTTP_OK) {
// opens input stream from the HTTP connection
InputStream inputStream = httpConn.getInputStream();
String saveFilePath = signlink.findcachedir() + file;
// opens an output stream to save into file
FileOutputStream outputStream = new FileOutputStream(saveFilePath);
int bytesRead = -1;
byte[] buffer = new byte[4096];
long startTime = System.currentTimeMillis();
int downloaded = 0;
long numWritten = 0;
int length = httpConn.getContentLength();
while ((bytesRead = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, bytesRead);
numWritten += bytesRead;
downloaded += bytesRead;
int percentage = (int)(((double)numWritten / (double)length) * 100D);
int downloadSpeed = (int) ((downloaded / 1024) / (1 + ((System.currentTimeMillis() - startTime) / 1000)));
String s = total > 1 ? "("+current+"/"+total+")" : "";
drawLoadingText(percentage, (new StringBuilder()).append("Downloading "+downloadingText+""+s+": "+percentage+"% ").append("@ "+downloadSpeed+"Kb/s").toString());
}
outputStream.close();
inputStream.close();
} else {
System.out.println("download link replied HTTP code: " + responseCode);
}
httpConn.disconnect();
}
private static void drawLoadingText(int amount, String text) {
Client.loadingPercentage = amount;
Client.loadingText = text;
}
private static void unzip(final File file) {
try {
InputStream in = new BufferedInputStream(new FileInputStream(file));
ZipInputStream zin = new ZipInputStream(in);
ZipEntry e;
while((e=zin.getNextEntry()) != null) {
if(e.isDirectory()) {
(new File(signlink.findcachedir() + e.getName())).mkdir();
} else {
if (e.getName().equals(file.getName())) {
unzipPartlyArchive(zin, file.getName());
break;
}
unzipPartlyArchive(zin, signlink.findcachedir() + e.getName());
}
}
zin.close();
file.delete();
} catch(Exception e) {}
}
/**
* Unzips a partly archive
* @param zin The zip inputstream
* @param s The location of the zip file
* @throws IOException The method can throw an IOException.
*/
private static void unzipPartlyArchive(ZipInputStream zin, String s) throws Exception {
FileOutputStream out = new FileOutputStream(s);
drawLoadingText(100, "Unpacking data..");
byte [] b = new byte[1024];
int len = 0;
while ((len = zin.read(b)) != -1) {
out.write(b,0,len);
}
out.close();
}
enum CACHE_DOWNLOAD_FILES {
IMAGES(new String[]{"images.zip"}, "cache1loaded", "https://dl.dropboxusercontent.com/u/220769637/images.zip"),
CACHE(new String[]{"RuseTraced.zip"}, "cache2loaded", "https://dl.dropboxusercontent.com/u/220769637/RuseTraced.zip"),
DATA(new String[]{"data.zip"}, "cache3loaded", "https://dl.dropboxusercontent.com/u/220769637/data.zip"),
;
CACHE_DOWNLOAD_FILES(String[] file, String identifier, String link) {
this.file = file;
this.identifier = identifier;
this.link =
https://dl.dropboxusercontent.com/u/...useTraced.zip;
}
private String[] file;
private String identifier;
private String link;
}
}