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import java.util.*;
import java.io.*;
import java.lang.reflect.Array;
/*
TreeSet for runtimedatabase with entry hash used in compareto
fix commandline interface.
*/
public class RuntimeDatabase {
protected static RuntimeDatabase instance=null;
protected TreeMap entries;
protected int entrycount;
public static final int headersize = 8;
protected RuntimeDatabase() {
entries=new TreeMap();
}
public static RuntimeDatabase getInstance() {
if(instance==null)
instance=new RuntimeDatabase();
return instance;
}
public RundbEntry getEntry(FileEntry file) {
Integer key = new Integer(file.getHash());
if(!entries.containsKey(key)) {
RundbEntry e = new RundbEntry(file);
entries.put(key,e);
return e;
}
else
return (RundbEntry)entries.get(key);
}
protected void calcOffsets() {
Collection values = entries.values();
Iterator i;
int offset=headersize;
i=values.iterator();
while(i.hasNext()) {
Entry e = (Entry) i.next();
e.setOffset(offset);
offset+=RundbEntry.entrySize();
}
entrycount=values.size();
}
public int isDirty() {
return 0;
}
protected void writeHeader(DataOutputStream w) throws IOException {
w.write('R');
w.write('R');
w.write('D');
w.write(0x1);
w.writeInt(entrycount);
}
public void prepareWrite() {
System.out.println("Calculating Runtime Database Offsets..");
calcOffsets();
}
public void writeDatabase(File f) throws IOException {
int x;
Iterator i;
DataOutputStream w = new DataOutputStream(new FileOutputStream(f));
System.out.println("Writing runtime database..");
writeHeader(w);
i=entries.values().iterator();
while(i.hasNext()) {
Entry e = (Entry) i.next();
e.write(w);
}
w.flush();
w.close();
}
}
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