Mono.Zeroconf – Rev 1
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//
// TxtRecord.cs
//
// Author:
// Aaron Bockover <abockover@novell.com>
//
// Copyright (C) 2006-2008 Novell, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Text;
using System.Text.RegularExpressions;
using System.Collections.Generic;
using Mono.Zeroconf;
namespace Mono.Zeroconf.Providers.AvahiDBus
{
public class TxtRecord : ITxtRecord
{
private List<TxtRecordItem> records = new List<TxtRecordItem> ();
private static readonly Encoding encoding = new UTF8Encoding ();
public TxtRecord ()
{
}
public TxtRecord (byte [][] data)
{
foreach (byte [] raw_item in data) {
Regex item_regex = new Regex (@"""[^""]*""|[^,]+", RegexOptions.IgnorePatternWhitespace);
foreach (Match item_match in item_regex.Matches (encoding.GetString (raw_item))) {
string item = item_match.Groups[0].Value;
string [] split_item = item.Split (new char [] { '=' }, 2);
if (split_item.Length == 1)
Add (split_item[0], String.Empty);
else
Add (split_item[0], split_item[1]);
}
}
}
public void Dispose ()
{
}
public void Add (string key, string value)
{
records.Add (new TxtRecordItem (key, value));
}
public void Add (string key, byte [] value)
{
records.Add (new TxtRecordItem (key, value));
}
public void Add (TxtRecordItem item)
{
records.Add (item);
}
public void Remove (string key)
{
TxtRecordItem item = Find (key);
if (item != null) {
records.Remove (item);
}
}
public TxtRecordItem Find (string key)
{
foreach (TxtRecordItem item in records) {
if (item.Key == key) {
return item;
}
}
return null;
}
public TxtRecordItem GetItemAt (int index)
{
return records[index] as TxtRecordItem;
}
internal static byte [][] Render (ITxtRecord record)
{
byte [][] items = new byte[record.Count][];
int index = 0;
foreach (TxtRecordItem item in record) {
string txt = String.Format ("{0}={1}", item.Key, item.ValueString);
items[index++] = encoding.GetBytes (txt);
}
return items;
}
public IEnumerator<TxtRecordItem> GetEnumerator ()
{
return records.GetEnumerator ();
}
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator ()
{
return GetEnumerator ();
}
public TxtRecordItem this[string key] {
get { return Find (key); }
}
public int Count {
get { return records.Count; }
}
public ITxtRecord BaseRecord {
get { return this; }
}
}
}