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/ViaThinkSoft Distributed/src/de/viathinksoft/distributed/apps/immortal/iterator/marschall/SectionImmortableNumber.java
0,0 → 1,137
package de.viathinksoft.distributed.apps.immortal.iterator.marschall;
 
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.math.BigInteger;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
 
import de.viathinksoft.distributed.apps.immortal.exception.FileContentsBadException;
import de.viathinksoft.distributed.apps.immortal.exception.InitialNumberIsOneException;
import de.viathinksoft.distributed.apps.immortal.exception.InitialNumberNotImmortableException;
import de.viathinksoft.distributed.apps.immortal.iterator.QuickImmortableCheck;
import de.viathinksoft.utils.security.MD5;
 
//TODO: Gewisse zahl anwählen
 
public class SectionImmortableNumber extends ArrayList<BigInteger> {
 
private static final long serialVersionUID = 251721127226195138L;
 
protected static final String SEPARATOR = ",";
 
public SectionImmortableNumber(BigInteger initialElement)
throws InitialNumberNotImmortableException,
InitialNumberIsOneException {
// TODO: initialnumberisone: soll das auch bei "0" passieren? (unendlichschleife)
if (initialElement.equals(BigInteger.ONE)) {
throw new InitialNumberIsOneException();
}
if (!QuickImmortableCheck.check(initialElement)) {
throw new InitialNumberNotImmortableException();
}
this.add(initialElement);
}
 
// public SectionImmortableNumber(String initialElement)
// throws InitialNumberNotImmortableException,
// InitialNumberIsOneException {
// this(new BigInteger(initialElement));
// }
 
public SectionImmortableNumber(int initialElement)
throws InitialNumberNotImmortableException,
InitialNumberIsOneException {
// this(Integer.toString(initialElement));
this(new BigInteger(Integer.toString(initialElement)));
}
 
public SectionImmortableNumber(String filename)
throws NoSuchAlgorithmException, IOException,
FileContentsBadException {
loadFromFile(filename);
}
 
public BigInteger getInitialElement() {
return this.get(0);
}
 
public int getCalculatedAmount() {
return this.size() - 1;
}
 
@Override
public String toString() {
String s = "";
for (BigInteger m : this) {
if (s.equals("")) {
s = m.toString();
} else {
s = m.toString().concat(SEPARATOR).concat(s);
}
}
return s;
}
 
public BigInteger toBigInteger() {
String s = "";
for (BigInteger m : this) {
s = m.toString().concat(s);
}
return new BigInteger(s);
}
 
// TODO equals, clone
 
private final String SIGNATURE = "Immortal Sectioned Marschall Number V001";
private final String SALT = "AFFAüüü+++MSKGM ignsdg nkoi ajp894jfocwrvw AFAFAü324§$§$%$&WQ";
 
public void saveToFile(String filename) throws IOException,
NoSuchAlgorithmException {
BufferedWriter x = new BufferedWriter(new FileWriter(filename));
 
String s;
x.write(SIGNATURE);
x.write("\r\n");
 
s = this.toString();
x.write(s);
x.write("\r\n");
x.write(MD5.digest(s, SALT));
x.write("\r\n");
 
x.close();
}
 
public void loadFromFile(String filename) throws IOException,
NoSuchAlgorithmException, FileContentsBadException {
BufferedReader r = new BufferedReader(new FileReader(filename));
 
String f_sig = r.readLine();
if ((f_sig == null) || (!f_sig.equals(SIGNATURE))) {
throw new FileContentsBadException();
}
 
String f_commatext = r.readLine();
if ((f_commatext == null)
|| (!MD5.digest(f_commatext, SALT).equals(r.readLine()))) {
throw new FileContentsBadException();
}
 
r.close();
 
this.clear();
 
String[] ary = f_commatext.split(SEPARATOR);
for (int i = ary.length - 1; i >= 0; i--) {
this.add(new BigInteger(ary[i]));
}
// for (String s : ary) {
// this.add(new BigInteger(s));
// }
}
 
}
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