private static KeyValue LoadFromFile(string path, bool asBinary)
{
if (File.Exists(path) == false)
{
return(null);
}
try
{
using var input = File.Open(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
var kv = new KeyValue();
if (asBinary)
{
if (kv.ReadAsBinary(input) == false)
{
return(null);
}
}
else
{
if (kv.ReadAsText(input) == false)
{
return(null);
}
}
return(kv);
}
catch (Exception)
{
return(null);
}
}
/// <summary>
/// Populate this instance from the given <see cref="Stream"/> as a binary <see cref="KeyValue"/>.
/// </summary>
/// <param name="input">The input <see cref="Stream"/> to read from.</param>
/// <returns><c>true</c> if the read was successful; otherwise, <c>false</c>.</returns>
public bool ReadAsBinary(Stream input)
{
this.Children = new List <KeyValue>();
while (true)
{
var type = (Type)input.ReadByte();
if (type == Type.End)
{
break;
}
var current = new KeyValue {
Name = input.ReadNullTermString(Encoding.UTF8)
};
try
{
switch (type)
{
case Type.None:
{
current.ReadAsBinary(input);
break;
}
case Type.String:
{
current.Value = input.ReadNullTermString(Encoding.UTF8);
break;
}
case Type.WideString:
{
throw new InvalidDataException("wstring is unsupported");
}
case Type.Int32:
case Type.Color:
case Type.Pointer:
{
current.Value = Convert.ToString(input.ReadInt32());
break;
}
case Type.UInt64:
{
current.Value = Convert.ToString(input.ReadUInt64());
break;
}
case Type.Float32:
{
current.Value = Convert.ToString(input.ReadFloat(), CultureInfo.InvariantCulture);
break;
}
default:
{
throw new InvalidDataException("Unknown KV type encountered.");
}
}
}
catch (InvalidDataException ex)
{
throw new InvalidDataException($"An exception ocurred while reading KV '{current.Name}'", ex);
}
this.Children.Add(current);
}
return(input.Position == input.Length);
}