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// Copyright (c) 1999-2004 Brian Wellington (bwelling@xbill.org)
package org.xbill.DNS;
import java.io.*;
import java.util.*;
/**
* Implements common functionality for the many record types whose format
* is a list of strings.
*
* @author Brian Wellington
*/
abstract class TXTBase extends Record {
private static final long serialVersionUID = -4319510507246305931L;
protected List strings;
protected
TXTBase() {}
protected
TXTBase(Name name, int type, int dclass, long ttl) {
super(name, type, dclass, ttl);
}
protected
TXTBase(Name name, int type, int dclass, long ttl, List strings) {
super(name, type, dclass, ttl);
if (strings == null)
throw new IllegalArgumentException("strings must not be null");
this.strings = new ArrayList(strings.size());
Iterator it = strings.iterator();
try {
while (it.hasNext()) {
String s = (String) it.next();
this.strings.add(byteArrayFromString(s));
}
}
catch (TextParseException e) {
throw new IllegalArgumentException(e.getMessage());
}
}
protected
TXTBase(Name name, int type, int dclass, long ttl, String string) {
this(name, type, dclass, ttl, Collections.singletonList(string));
}
void
rrFromWire(DNSInput in) throws IOException {
strings = new ArrayList(2);
while (in.remaining() > 0) {
byte [] b = in.readCountedString();
strings.add(b);
}
}
void
rdataFromString(Tokenizer st, Name origin) throws IOException {
strings = new ArrayList(2);
while (true) {
Tokenizer.Token t = st.get();
if (!t.isString())
break;
try {
strings.add(byteArrayFromString(t.value));
}
catch (TextParseException e) {
throw st.exception(e.getMessage());
}
}
st.unget();
}
/** converts to a String */
String
rrToString() {
StringBuffer sb = new StringBuffer();
Iterator it = strings.iterator();
while (it.hasNext()) {
byte [] array = (byte []) it.next();
sb.append(byteArrayToString(array, true));
if (it.hasNext())
sb.append(" ");
}
return sb.toString();
}
/**
* Returns the text strings
* @return A list of Strings corresponding to the text strings.
*/
public List
getStrings() {
List list = new ArrayList(strings.size());
for (int i = 0; i < strings.size(); i++)
list.add(byteArrayToString((byte []) strings.get(i), false));
return list;
}
/**
* Returns the text strings
* @return A list of byte arrays corresponding to the text strings.
*/
public List
getStringsAsByteArrays() {
return strings;
}
void
rrToWire(DNSOutput out, Compression c, boolean canonical) {
Iterator it = strings.iterator();
while (it.hasNext()) {
byte [] b = (byte []) it.next();
out.writeCountedString(b);
}
}
}
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