private static List <string> AllKeys(List <string> output, BencodedValue value)
{
AllKeys(output, value.Dictionary);
AllKeys(output, value.Array);
return(output);
}
public byte[] Encode(BencodedValue data)
{
using (MemoryStream stream = new MemoryStream())
{
this.Encode(stream, data);
return(stream.ToArray());
}
}
private static List <string> AllTexts(List <string> output, BencodedValue value, Encoding encoding)
{
if (value != null)
{
AllTexts(output, value.Text, encoding);
AllTexts(output, value.Dictionary, encoding);
AllTexts(output, value.Array, encoding);
}
return(output);
}
public static T Find <T>(this BencodedValue value, string name, Func <BencodedValue, T> selector)
{
if (value != null && value.Dictionary != null)
{
foreach (BencodedEntry entry in value.Dictionary)
{
if (entry.Key.Text != null && entry.Key.Text.GetString() == name)
{
return(selector.Invoke(entry.Value));
}
}
}
return(selector.Invoke(null));
}
private void Encode(MemoryStream stream, BencodedValue data)
{
if (data.Dictionary != null)
{
this.Write(stream, "d");
foreach (BencodedEntry entry in data.Dictionary)
{
this.Encode(stream, entry.Key);
this.Encode(stream, entry.Value);
}
this.Write(stream, "e");
}
else if (data.Array != null)
{
this.Write(stream, "l");
foreach (BencodedValue item in data.Array)
{
this.Encode(stream, item);
}
this.Write(stream, "e");
}
else if (data.Text != null)
{
this.Write(stream, data.Text.Length.ToString());
this.Write(stream, ":");
this.Write(stream, data.Text.GetBytes());
}
else if (data.Number != null)
{
this.Write(stream, "i");
this.Write(stream, data.Number.ToString());
this.Write(stream, "e");
}
else
{
this.Write(stream, data.Data.Length.ToString());
this.Write(stream, ":");
this.Write(stream, data.Data.GetBytes());
}
}
private BencodedValue DecodeDictionary(byte[] data, ref int position)
{
int offset = position - 1;
List <BencodedEntry> entries = new List <BencodedEntry>();
while (data[position] != 0x65)
{
BencodedValue key = DecodeCore(data, ref position);
BencodedValue value = DecodeCore(data, ref position);
entries.Add(new BencodedEntry {
Key = key, Value = value
});
}
position++;
return(new BencodedValue
{
Data = new BencodedData(data, offset, position - offset),
Dictionary = entries.ToArray()
});
}
public static string[] AllTexts(this BencodedValue value, Encoding encoding)
{
return(AllTexts(new List <string>(), value, encoding).ToArray());
}
public static long ToInt64(this BencodedValue value)
{
return(value.Number.ToInt64());
}
public static int ToInt32(this BencodedValue value)
{
return(value.Number.ToInt32());
}
public static string ToText(this BencodedValue value, Encoding encoding)
{
return(AllTexts(value, encoding).FirstOrDefault());
}
public static string ToText(this BencodedValue value)
{
return(ToText(value, Encoding.ASCII));
}