if (args.length != 1) {
System.out.println("Usage: GUnzip source");
return;
}
// create input stream
String zipname, source;
if (args[0].endsWith(".gz")) {
zipname = args[0];
source = args[0].substring(0, args[0].length( ) - 3);
}
else {
zipname = args[0] + ".gz";
source = args[0];
}
GZIPInputStream zipin;
try {
FileInputStream in = new FileInputStream(zipname);
zipin = new GZIPInputStream(in);
}
catch (IOException e) {
System.out.println("Couldn't open " + zipname + ".");
return;
}
byte[] buffer = new byte[sChunk];
// decompress the file
try {
FileOutputStream out = new FileOutputStream(source);
int length;
while ((length = zipin.read(buffer, 0, sChunk)) != -1)
out.write(buffer, 0, length);
out.close( );
}
catch (IOException e) {
System.out.println("Couldn't decompress " + args[0] + ".");
}
try { zipin.close( ); }
catch (IOException e) {}
