public static object Read(ReadOnlySpan <byte> content, bool strict = false)
{
var reader = new BEncodingReader(content);
object obj = ReadCore(ref reader, strict);
if (!reader.Ends())
{
throw new FormatException("Unexpected content after ending.");
}
return(obj);
}
private static object ReadCore(ref BEncodingReader reader, bool strict)
{
if (reader.TryReadInt64(out long l, strict))
{
return(l);
}
else if (reader.TryReadString(out string?str))
{
return(str);
}
else if (reader.TryReadListStart())
{
var list = new List <object>();
while (!reader.TryReadListDictEnd())
{
list.Add(ReadCore(ref reader, strict));
}
return(list);
}
else if (reader.TryReadDictStart())
{
var dict = new Dictionary <string, object>();
string?lastKey = null;
while (!reader.TryReadListDictEnd())
{
string key = reader.ReadString();
if (strict &&
string.CompareOrdinal(lastKey, key) >= 0)
{
throw new FormatException("Dictionary keys must appear in sorted order.");
}
lastKey = key;
dict.Add(key, ReadCore(ref reader, strict));
}
return(dict);
}
else
{
throw new FormatException("Can't read current state as any type of object.");
}
}
