private void Process(object obj, Type type)
{
foreach (MemberInfo member in GetMembers(type))
{
BinaryAttribute attr = member.GetCustomAttribute <BinaryAttribute>();
bool ignoreRead = !_toBytes && attr.IgnoreOnRead;
bool ignoreWrite = _toBytes && attr.IgnoreOnWrite;
if (ignoreRead || ignoreWrite)
{
continue;
}
object value;
switch (member)
{
case FieldInfo info:
value = Convert(info.FieldType, info.Name, attr, _toBytes ? info.GetValue(obj) : null);
if (!_toBytes)
{
info.SetValue(obj, value);
}
break;
case PropertyInfo info:
if (_toBytes && !info.CanRead)
{
continue;
}
value = Convert(info.PropertyType, info.Name, attr, _toBytes ? info.GetValue(obj) : null);
if (!_toBytes && info.CanWrite)
{
info.SetValue(obj, value);
}
break;
}
}
}
private object Convert(Type type, string name, BinaryAttribute attr, object ret)
{
IEnumerable <byte> bytes;
int len = (int)attr.Count;
bool reverse = _isBigEndian;
if (attr.Reverse)
{
reverse = !reverse;
}
if (!_toBytes && attr.Skip > 0)
{
_data.Skip((int)attr.Skip);
}
switch (attr.CustomType)
{
case CustomType.Hex:
if (_types[type] != CoreType.String)
{
throw new ArgumentException($"Тип поля {name} не является типом string");
}
if (!_toBytes)
{
return(BitConverter.ToString(_data.ToArray(len, attr.Reverse)).Replace("-", string.Empty));
}
string hex = (string)ret ?? string.Empty;
int hexLen = Math.Max(hex.Length, len * 2);
if (hexLen % 2 != 0)
{
hexLen++;
}
if (hex.Length < hexLen)
{
hex = hex.PadLeft(hexLen, '0');
}
bytes = Enumerable.Range(0, hex.Length)
.Where(x => x % 2 == 0)
.Select(x => System.Convert.ToByte(hex.Substring(x, 2), 16));
using (IEnumerator <byte> en = bytes.GetEnumerator())
_result.AddRange(en.ToArray(len, attr.Reverse));
return(null);
}
if (type.IsEnum)
{
int value = 0;
if (_toBytes)
{
value = (int)ret;
}
switch (len)
{
case 0:
case 1:
if (_toBytes)
{
_result.Add((byte)value);
return(null);
}
value = _data.Take(1).Single();
break;
case 2:
if (_toBytes)
{
bytes = BitConverter.GetBytes((short)value);
_result.AddRange(reverse ? bytes.Reverse() : bytes);
return(null);
}
value = BitConverter.ToInt16(_data.ToArray(2, reverse), 0);
break;
case 4:
if (_toBytes)
{
bytes = BitConverter.GetBytes(value);
_result.AddRange(reverse ? bytes.Reverse() : bytes);
return(null);
}
value = BitConverter.ToInt32(_data.ToArray(4, reverse), 0);
break;
default:
throw new ArgumentException(
$"Атрибут Count у поля {name} типа {type.Name} может принимать только значения 1, 2 и 4");
}
return(Enum.IsDefined(type, value) ? value : 0);
}
if (!_types.TryGetValue(type, out CoreType coreType))
{
throw new ArgumentException($"Неподдерживаемый тип {type.Name} у поля {name}");
}
switch (coreType)
{
case CoreType.Boolean:
if (!_toBytes)
{
return(BitConverter.ToBoolean(_data.ToArray(1), 0));
}
_result.AddRange(BitConverter.GetBytes((bool)ret));
return(null);
case CoreType.String:
Encoding encoding;
switch (attr.Encoding)
{
case TextEncoding.Ascii:
encoding = Encoding.ASCII;
break;
case TextEncoding.WinRus:
encoding = Encoding.GetEncoding(1251);
break;
case TextEncoding.DosRus:
encoding = Encoding.GetEncoding(866);
break;
case TextEncoding.Koi8Rus:
encoding = Encoding.GetEncoding(20866);
break;
case TextEncoding.Utf8:
encoding = Encoding.UTF8;
break;
case TextEncoding.Unicode:
encoding = Encoding.Unicode;
break;
case TextEncoding.UnicodeBigEndian:
encoding = Encoding.BigEndianUnicode;
break;
default:
encoding = Encoding.UTF8;
break;
}
byte[] val;
if (!_toBytes)
{
val = _data.ToArray(len, attr.Reverse);
if (val.All(b => b == 0))
{
val = Array.Empty <byte>();
}
return(encoding.GetString(val).TrimEnd('\0'));
}
if (ret == null)
{
ret = string.Empty;
}
val = encoding.GetBytes((string)ret);
using (IEnumerator <byte> en = val.Length < len
? val.Concat(Enumerable.Repeat <byte>(0x20, len - val.Length)).GetEnumerator()
: ((IEnumerable <byte>)val).GetEnumerator())
_result.AddRange(en.ToArray(len > 0 ? len : val.Length, attr.Reverse));
return(null);
case CoreType.ByteArray:
// TODO Есть ли смысл поменять на полноценную работу с массивами? Type.IsArray, Type.GetElementType()
if (!_toBytes)
{
return(_data.ToArray(len, attr.Reverse));
}
if (ret == null)
{
ret = Array.Empty <byte>();
}
using (IEnumerator <byte> en = ((IEnumerable <byte>)ret).GetEnumerator())
_result.AddRange(en.ToArray(len, attr.Reverse));
return(null);
case CoreType.Byte:
if (!_toBytes)
{
return(_data.Take(1).Single());
}
_result.Add((byte)ret);
return(null);
case CoreType.SByte:
if (!_toBytes)
{
return((sbyte)_data.Take(1).Single());
}
_result.Add((byte)(sbyte)ret);
return(null);
case CoreType.Char:
if (len == 0)
{
len = 2;
}
if (!_toBytes)
{
return(BitConverter.ToChar(_data.ToArray(len, reverse, 2), 0));
}
bytes = BitConverter.GetBytes((char)ret).Take(len);
_result.AddRange(reverse ? bytes.Reverse() : bytes);
return(null);
case CoreType.Float:
if (len < 4)
{
len = 4;
}
if (!_toBytes)
{
return(BitConverter.ToSingle(_data.ToArray(len, reverse, 4), 0));
}
bytes = BitConverter.GetBytes((float)ret);
_result.AddRange(reverse ? bytes.Reverse() : bytes);
return(null);
case CoreType.Double:
if (len < 8)
{
len = 8;
}
if (!_toBytes)
{
return(BitConverter.ToDouble(_data.ToArray(len, reverse, 8), 0));
}
bytes = BitConverter.GetBytes((double)ret);
_result.AddRange(reverse ? bytes.Reverse() : bytes);
return(null);
case CoreType.Short:
if (len == 0)
{
len = 2;
}
if (!_toBytes)
{
return(BitConverter.ToInt16(_data.ToArray(len, reverse, 2), 0));
}
bytes = BitConverter.GetBytes((short)ret).Take(len);
_result.AddRange(reverse ? bytes.Reverse() : bytes);
return(null);
case CoreType.Int:
if (len == 0)
{
len = 4;
}
if (!_toBytes)
{
return(BitConverter.ToInt32(_data.ToArray(len, reverse, 4), 0));
}
bytes = BitConverter.GetBytes((int)ret).Take(len);
_result.AddRange(reverse ? bytes.Reverse() : bytes);
return(null);
case CoreType.Long:
if (len == 0)
{
len = 8;
}
if (!_toBytes)
{
return(BitConverter.ToInt64(_data.ToArray(len, reverse, 8), 0));
}
bytes = BitConverter.GetBytes((long)ret).Take(len);
_result.AddRange(reverse ? bytes.Reverse() : bytes);
return(null);
case CoreType.UShort:
if (len == 0)
{
len = 2;
}
if (!_toBytes)
{
return(BitConverter.ToUInt16(_data.ToArray(len, reverse, 2), 0));
}
bytes = BitConverter.GetBytes((ushort)ret).Take(len);
_result.AddRange(reverse ? bytes.Reverse() : bytes);
return(null);
case CoreType.UInt:
if (len == 0)
{
len = 4;
}
if (!_toBytes)
{
return(BitConverter.ToUInt32(_data.ToArray(len, reverse, 4), 0));
}
bytes = BitConverter.GetBytes((uint)ret).Take(len);
_result.AddRange(reverse ? bytes.Reverse() : bytes);
return(null);
case CoreType.ULong:
if (len == 0)
{
len = 8;
}
if (!_toBytes)
{
return(BitConverter.ToUInt64(_data.ToArray(len, reverse, 8), 0));
}
bytes = BitConverter.GetBytes((ulong)ret).Take(len);
_result.AddRange(reverse ? bytes.Reverse() : bytes);
return(null);
default:
return(default(object));
}
}
