| // 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); |
| } |
| } |
| |
| } |