/// <summary>
/// Read a DXF record from a binary DXF file
/// </summary>
/// <param name="rec"></param>
/// <param name="lineNumber"></param>
/// <param name="readingTextEntity"></param>
/// <returns></returns>
public bool ReadBinaryDXFRecord(out DXFRecord rec,
ref int lineNumber,
bool readingTextEntity = false)
{
rec = new DXFRecord();
var buffer = new byte[100];
// Read the record number
if (_dXFFileIsPostR13c3)
{
_binarydxfFile.Read(buffer, 0, 2);
rec.recType = BitConverter.ToUInt16(buffer);
}
else
{
var binaryRecType1 = _binarydxfFile.ReadByte();
if (binaryRecType1 != 255)
{
rec.recType = (ushort)binaryRecType1;
}
else // escaped record number
{
_binarydxfFile.Read(buffer, 0, 2);
rec.recType = BitConverter.ToUInt16(buffer);
}
}
if (rec.recType >= BinaryDXFRecordTypeLookUp.Length)
{
return(false);
}
switch (BinaryDXFRecordTypeLookUp[rec.recType])
{
case BinaryDXFRecordType_String:
var builder = new StringBuilder();
// read chars until we find a #0
byte theByte;
do
{
theByte = (byte)_binarydxfFile.ReadByte();
if (theByte != 0)
{
builder.Append((char)theByte);
}
} while (theByte != 0);
rec.s = builder.ToString();
// We do not want to remove leading or trailing spaces from
// the text in DXF text entities (TEXT and MTEXT). These
// group codes 1 (for TEXT) and 1&3 (for MTEXT). If the caller
// has advised it is reading a DXF text entity we no do not
// strip the spaces from the string value.
if (readingTextEntity)
{
if (!(rec.recType == 1 || rec.recType == 3))
{
rec.s = rec.s.Trim();
}
}
else
{
rec.s = rec.s.Trim();
}
break;
case BinaryDXFRecordType_Real:
_binarydxfFile.Read(buffer, 0, 8);
rec.r = BitConverter.ToDouble(buffer);
break;
case BinaryDXFRecordType_Integer1:
_binarydxfFile.Read(buffer, 0, 1);
rec.i = buffer[0];
break;
case BinaryDXFRecordType_Integer2:
_binarydxfFile.Read(buffer, 0, 2);
rec.i = BitConverter.ToInt16(buffer);
break;
case BinaryDXFRecordType_Integer4:
_binarydxfFile.Read(buffer, 0, 4);
rec.i = BitConverter.ToInt32(buffer);
break;
case BinaryDXFRecordType_Integer8:
_binarydxfFile.Read(buffer, 0, 4);
rec.i = BitConverter.ToUInt32(buffer);
break;
case BinaryDXFRecordType_ExtendedData:
rec.s = "";
var recLength = _binarydxfFile.ReadByte();
_binarydxfFile.Position += recLength;
break;
default:
return(false);
}
lineNumber++;
return(true);
}
public Double GetDouble(int iOffset)
{
return(BitConverter.ToDouble(this.Buffer, iOffset));
}
public static double GetDouble(byte[] bytes, int offset, int count) => BitConverter.ToDouble(GetByteArray(bytes, offset, count), 0);
public static double ConvertDouble(double value)
{
byte[] buffer = BitConverter.GetBytes(value);
Array.Reverse(buffer);
return(BitConverter.ToDouble(buffer, 0));
}
public static double ReadDouble(IntPtr ptr)
{
byte[] bytes = new byte[sizeof(double)];
Marshal.Copy(ptr, bytes, 0, bytes.Length);
return(BitConverter.ToDouble(bytes, 0));
}
public double PeekDouble()
{
return(BitConverter.ToDouble(_data, _position));
}
public double ReadDouble()
{
byte[] byteArray = new byte[8];
base.Read(byteArray, 0, 8);
return(BitConverter.ToDouble(byteArray, 0));
}
internal Double?ReadNullableDouble()
{
ReadValidTypeID(TypeID.NullableDouble);
return(ReadNullable <Double?>(() => BitConverter.ToDouble(this.Reader.ReadBytes(8), 0)));
}
public static double Swap(double value)
{
byte[] b = BitConverter.GetBytes(value);
Array.Reverse(b);
return(BitConverter.ToDouble(b, 0));
}
private object ReadBinaryFloat()
{
return(BitConverter.ToDouble(ReadBytes(8), 0));
}
internal Double ReadDouble()
{
ReadValidTypeID(TypeID.Double);
return(BitConverter.ToDouble(this.Reader.ReadBytes(8), 0));
}
public double GetObject(byte[] buffer, int offset, int count)
{
return(BitConverter.ToDouble(buffer, offset));
}
public static T ReadPacket <T>(byte[] buffer, ref int idx, int len = 0)
{
var result = default(T);
try
{
var resultType = typeof(T);
if (resultType == typeof(int))
{
result = (T)(object)BitConverter.ToInt32(buffer, idx);
idx += 4;
}
else if (resultType == typeof(ushort))
{
result = (T)(object)BitConverter.ToInt16(buffer, idx);
idx += 2;
}
else if (resultType == typeof(uint))
{
result = (T)(object)BitConverter.ToUInt32(buffer, idx);
idx += 4;
}
else if (resultType == typeof(byte))
{
result = (T)(object)buffer[idx];
idx += 1;
}
else if (resultType == typeof(bool))
{
result = (T)(object)(buffer[idx] == 1);
idx += 1;
}
else if (resultType == typeof(float))
{
result = (T)(object)BitConverter.ToDouble(buffer, idx);
idx += 8;
}
else if (resultType == typeof(string))
{
result = (T)(object)EncodingBig5.GetString(buffer, idx, len);
idx += len;
}
else if (resultType == typeof(byte[]))
{
var tmp = new byte[len];
Array.Copy(buffer, idx, tmp, 0, len);
idx += len;
}
else if (resultType == typeof(double))
{
result = (T)(object)BitConverter.ToDouble(buffer, idx);
idx += 8;
}
else
{
throw new Exception("[ByteUtil.ReadPacket]UNKNOWN TYPE ![TRACE]" + TraceUtil.GetTraceMethodName(5));
}
}
catch (Exception ex)
{
throw new Exception("[ByteUtil.ReadPacket]" + ex.Message + " [TRACE] " + ex.StackTrace);
}
return(result);
}
public string Evaluate()
{
Stack <object> stack = new Stack <object>();
object[] reg = new object[8];
for (int i = 0; i < Bytes.Length; i++)
{
var b = Bytes[i];
if (b >= 0x3F && b <= 0x7F)
{
stack.Push(b - 64);
}
else if (b == 0xA5)
{
var sb = new StringBuilder();
char nextChar = '?';
do
{
nextChar = BitConverter.ToChar(Bytes, i + 1);
if (nextChar != (char)0)
{
sb.Append(nextChar);
}
i += 2;
}while (nextChar != (char)0);
stack.Push(sb.ToString());
}
else if (b == 0x80)
{
stack.Push(BitConverter.ToSingle(Bytes, i + 1));
i += 4;
}
else if (b == 0x81)
{
stack.Push(BitConverter.ToDouble(Bytes, i + 1));
i += 8;
}
else if (b == 0x82)
{
stack.Push(BitConverter.ToInt32(Bytes, i + 1));
i += 4;
}
else if (b == 0x84)
{
var id = Convert.ToInt32(stack.Pop());
stack.Push(EzCommand.GetString(id));
}
else if (b == 0x85)
{
var arg1 = stack.Pop();
var id = Convert.ToInt32(stack.Pop());
stack.Push(EzCommand.GetString(id, arg1));
}
else if (b == 0x86)
{
var arg2 = stack.Pop();
var arg1 = stack.Pop();
var id = Convert.ToInt32(stack.Pop());
stack.Push(EzCommand.GetString(id, arg1, arg2));
}
else if (b >= 0x91 && b <= 0x96)
{
var item2 = stack.Pop();
var item1 = stack.Pop();
stack.Push($"({item1}) {GetComp(b)} ({item2})");
}
else if (b == 0x98)
{
var item2 = stack.Pop();
var item1 = stack.Pop();
stack.Push($"({item1}) && ({item2})");
}
else if (b == 0x99)
{
var item2 = stack.Pop();
var item1 = stack.Pop();
stack.Push($"({item1}) || ({item2})");
}
else if (b == 0xA6)
{
stack.Push($"[CONT.]");
}
else if (b >= 0xA7 && b <= 0xAE)
{
byte regIndex = (byte)(b - 0xA7);
var item = stack.Peek();
stack.Push($"{item} => REG[{regIndex}]");
reg[regIndex] = item;
}
else if (b >= 0xAF && b <= 0xB6)
{
byte regIndex = (byte)(b - 0xAF);
stack.Push($"REG[{regIndex}] => {reg[regIndex]}");
}
else if (b == 0xB7)
{
stack.Push($"[STOP IF FALSE]");
}
else if (b == 0xA1)
{
//stack.Push("\n");
}
else if (b >= 0x8C && b <= 0x8F)
{
var item2 = stack.Pop();
var item1 = stack.Pop();
stack.Push($"({item1}) <op 0x{b:X2}> ({item2})");
}
else
{
stack.Push($"<?0x{b:X2}?>");
}
}
return(string.Join(", ", stack));
}
public double ReadDouble()
{
byte[] temp = BitConverter.GetBytes(reader.ReadDouble());
Array.Reverse(temp);
return(BitConverter.ToDouble(temp, 0));
}
private static Double swapByteOrder(Double value)
{
Byte[] buffer = BitConverter.GetBytes(value);
Array.Reverse(buffer, 0, buffer.Length);
return(BitConverter.ToDouble(buffer, 0));
}
public void WriteDouble(double v)
{
byte[] temp = BitConverter.GetBytes(v);
Array.Reverse(temp);
writer.Write(BitConverter.ToDouble(temp, 0));
}
/// <summary>
/// Gets the value(s) of a tag in an open TIFF file.
/// </summary>
/// <param name="tif">An instance of the <see cref="Tiff"/> class.</param>
/// <param name="tag">The tag.</param>
/// <returns>The value(s) of a tag in an open TIFF file/stream as array of
/// <see cref="FieldValue"/> objects or <c>null</c> if there is no such tag set.</returns>
/// <seealso cref="Tiff.GetField"/>
public virtual FieldValue[] GetField(Tiff tif, TiffTag tag)
{
TiffDirectory td = tif.m_dir;
FieldValue[] result = null;
switch (tag)
{
case TiffTag.SUBFILETYPE:
result = new FieldValue[1];
result[0].Set(td.td_subfiletype);
break;
case TiffTag.IMAGEWIDTH:
result = new FieldValue[1];
result[0].Set(td.td_imagewidth);
break;
case TiffTag.IMAGELENGTH:
result = new FieldValue[1];
result[0].Set(td.td_imagelength);
break;
case TiffTag.BITSPERSAMPLE:
result = new FieldValue[1];
result[0].Set(td.td_bitspersample);
break;
case TiffTag.COMPRESSION:
result = new FieldValue[1];
result[0].Set(td.td_compression);
break;
case TiffTag.PHOTOMETRIC:
result = new FieldValue[1];
result[0].Set(td.td_photometric);
break;
case TiffTag.THRESHHOLDING:
result = new FieldValue[1];
result[0].Set(td.td_threshholding);
break;
case TiffTag.FILLORDER:
result = new FieldValue[1];
result[0].Set(td.td_fillorder);
break;
case TiffTag.ORIENTATION:
result = new FieldValue[1];
result[0].Set(td.td_orientation);
break;
case TiffTag.SAMPLESPERPIXEL:
result = new FieldValue[1];
result[0].Set(td.td_samplesperpixel);
break;
case TiffTag.ROWSPERSTRIP:
result = new FieldValue[1];
result[0].Set(td.td_rowsperstrip);
break;
case TiffTag.MINSAMPLEVALUE:
result = new FieldValue[1];
result[0].Set(td.td_minsamplevalue);
break;
case TiffTag.MAXSAMPLEVALUE:
result = new FieldValue[1];
result[0].Set(td.td_maxsamplevalue);
break;
case TiffTag.SMINSAMPLEVALUE:
result = new FieldValue[1];
result[0].Set(td.td_sminsamplevalue);
break;
case TiffTag.SMAXSAMPLEVALUE:
result = new FieldValue[1];
result[0].Set(td.td_smaxsamplevalue);
break;
case TiffTag.XRESOLUTION:
result = new FieldValue[1];
result[0].Set(td.td_xresolution);
break;
case TiffTag.YRESOLUTION:
result = new FieldValue[1];
result[0].Set(td.td_yresolution);
break;
case TiffTag.PLANARCONFIG:
result = new FieldValue[1];
result[0].Set(td.td_planarconfig);
break;
case TiffTag.XPOSITION:
result = new FieldValue[1];
result[0].Set(td.td_xposition);
break;
case TiffTag.YPOSITION:
result = new FieldValue[1];
result[0].Set(td.td_yposition);
break;
case TiffTag.RESOLUTIONUNIT:
result = new FieldValue[1];
result[0].Set(td.td_resolutionunit);
break;
case TiffTag.PAGENUMBER:
result = new FieldValue[2];
result[0].Set(td.td_pagenumber[0]);
result[1].Set(td.td_pagenumber[1]);
break;
case TiffTag.HALFTONEHINTS:
result = new FieldValue[2];
result[0].Set(td.td_halftonehints[0]);
result[1].Set(td.td_halftonehints[1]);
break;
case TiffTag.COLORMAP:
result = new FieldValue[3];
result[0].Set(td.td_colormap[0]);
result[1].Set(td.td_colormap[1]);
result[2].Set(td.td_colormap[2]);
break;
case TiffTag.STRIPOFFSETS:
case TiffTag.TILEOFFSETS:
result = new FieldValue[1];
result[0].Set(td.td_stripoffset);
break;
case TiffTag.STRIPBYTECOUNTS:
case TiffTag.TILEBYTECOUNTS:
result = new FieldValue[1];
result[0].Set(td.td_stripbytecount);
break;
case TiffTag.MATTEING:
result = new FieldValue[1];
result[0].Set((td.td_extrasamples == 1 && td.td_sampleinfo[0] == ExtraSample.ASSOCALPHA));
break;
case TiffTag.EXTRASAMPLES:
result = new FieldValue[2];
result[0].Set(td.td_extrasamples);
result[1].Set(td.td_sampleinfo);
break;
case TiffTag.TILEWIDTH:
result = new FieldValue[1];
result[0].Set(td.td_tilewidth);
break;
case TiffTag.TILELENGTH:
result = new FieldValue[1];
result[0].Set(td.td_tilelength);
break;
case TiffTag.TILEDEPTH:
result = new FieldValue[1];
result[0].Set(td.td_tiledepth);
break;
case TiffTag.DATATYPE:
switch (td.td_sampleformat)
{
case SampleFormat.UINT:
result = new FieldValue[1];
result[0].Set(DATATYPE_UINT);
break;
case SampleFormat.INT:
result = new FieldValue[1];
result[0].Set(DATATYPE_INT);
break;
case SampleFormat.IEEEFP:
result = new FieldValue[1];
result[0].Set(DATATYPE_IEEEFP);
break;
case SampleFormat.VOID:
result = new FieldValue[1];
result[0].Set(DATATYPE_VOID);
break;
}
break;
case TiffTag.SAMPLEFORMAT:
result = new FieldValue[1];
result[0].Set(td.td_sampleformat);
break;
case TiffTag.IMAGEDEPTH:
result = new FieldValue[1];
result[0].Set(td.td_imagedepth);
break;
case TiffTag.SUBIFD:
result = new FieldValue[2];
result[0].Set(td.td_nsubifd);
result[1].Set(td.td_subifd);
break;
case TiffTag.YCBCRPOSITIONING:
result = new FieldValue[1];
result[0].Set(td.td_ycbcrpositioning);
break;
case TiffTag.YCBCRSUBSAMPLING:
result = new FieldValue[2];
result[0].Set(td.td_ycbcrsubsampling[0]);
result[1].Set(td.td_ycbcrsubsampling[1]);
break;
case TiffTag.TRANSFERFUNCTION:
result = new FieldValue[3];
result[0].Set(td.td_transferfunction[0]);
if (td.td_samplesperpixel - td.td_extrasamples > 1)
{
result[1].Set(td.td_transferfunction[1]);
result[2].Set(td.td_transferfunction[2]);
}
break;
case TiffTag.REFERENCEBLACKWHITE:
if (td.td_refblackwhite != null)
{
result = new FieldValue[1];
result[0].Set(td.td_refblackwhite);
}
break;
case TiffTag.INKNAMES:
result = new FieldValue[1];
result[0].Set(td.td_inknames);
break;
default:
// This can happen if multiple images are open with
// different codecs which have private tags. The global tag
// information table may then have tags that are valid for
// one file but not the other. If the client tries to get a
// tag that is not valid for the image's codec then we'll
// arrive here.
TiffFieldInfo fip = tif.FindFieldInfo(tag, TiffType.ANY);
if (fip == null || fip.Bit != FieldBit.Custom)
{
Tiff.ErrorExt(tif, tif.m_clientdata, "_TIFFVGetField",
"{0}: Invalid {1}tag \"{2}\" (not supported by codec)",
tif.m_name, Tiff.isPseudoTag(tag) ? "pseudo-" : string.Empty,
fip != null ? fip.Name : "Unknown");
result = null;
break;
}
// Do we have a custom value?
result = null;
for (int i = 0; i < td.td_customValueCount; i++)
{
TiffTagValue tv = td.td_customValues[i];
if (tv.info.Tag != tag)
{
continue;
}
if (fip.PassCount)
{
result = new FieldValue[2];
if (fip.ReadCount == TiffFieldInfo.Variable2)
{
result[0].Set(tv.count);
}
else
{
// Assume TiffFieldInfo.Variable
result[0].Set(tv.count);
}
result[1].Set(tv.value);
}
else
{
if ((fip.Type == TiffType.ASCII ||
fip.ReadCount == TiffFieldInfo.Variable ||
fip.ReadCount == TiffFieldInfo.Variable2 ||
fip.ReadCount == TiffFieldInfo.Spp ||
tv.count > 1) && fip.Tag != TiffTag.PAGENUMBER &&
fip.Tag != TiffTag.HALFTONEHINTS &&
fip.Tag != TiffTag.YCBCRSUBSAMPLING &&
fip.Tag != TiffTag.DOTRANGE)
{
result = new FieldValue[1];
byte[] value = tv.value;
if (fip.Type == TiffType.ASCII &&
tv.value.Length > 0 &&
tv.value[tv.value.Length - 1] == 0)
{
// cut unwanted zero at the end
value = new byte[Math.Max(tv.value.Length - 1, 0)];
Buffer.BlockCopy(tv.value, 0, value, 0, value.Length);
}
result[0].Set(value);
}
else
{
result = new FieldValue[tv.count];
byte[] val = tv.value;
int valPos = 0;
for (int j = 0; j < tv.count; j++, valPos += Tiff.dataSize(tv.info.Type))
{
switch (fip.Type)
{
case TiffType.BYTE:
case TiffType.UNDEFINED:
case TiffType.SBYTE:
result[j].Set(val[valPos]);
break;
case TiffType.SHORT:
case TiffType.SSHORT:
result[j].Set(BitConverter.ToInt16(val, valPos));
break;
case TiffType.LONG:
case TiffType.IFD:
case TiffType.SLONG:
result[j].Set(BitConverter.ToInt32(val, valPos));
break;
case TiffType.RATIONAL:
case TiffType.SRATIONAL:
case TiffType.FLOAT:
result[j].Set(BitConverter.ToSingle(val, valPos));
break;
case TiffType.DOUBLE:
result[j].Set(BitConverter.ToDouble(val, valPos));
break;
default:
result = null;
break;
}
}
}
}
break;
}
break;
}
return(result);
}
public static double Reverse(double value)
{
byte[] bytes = BitConverter.GetBytes(value);
Array.Reverse(bytes);
return(BitConverter.ToDouble(bytes, 0));
}
public double ReadDouble(IntPtr address)
{
return(BitConverter.ToDouble(ReadBytes(address, 8), 0));
}
public static double ToDouble(byte[] value, int startIndex, bool convert)
{
double result = BitConverter.ToDouble(value, startIndex);
return(convert ? ConvertDouble(result) : result);
}
/// <summary>
/// This will get the value for a basic data type in this data
/// </summary>
/// <param name="type">The type to convert the bytes for</typeparam>
/// <param name="start">The byte start index to read from</param>
/// <returns>The value of the object</returns>
public object GetBasicType(Type type, int start, bool moveIndex = false)
{
if (type == typeof(sbyte))
{
if (moveIndex)
{
MoveStartIndex(sizeof(sbyte));
}
return((sbyte)byteArr[start]);
}
else if (type == typeof(byte))
{
if (moveIndex)
{
MoveStartIndex(sizeof(byte));
}
return(byteArr[start]);
}
else if (type == typeof(char))
{
if (moveIndex)
{
MoveStartIndex(sizeof(char));
}
return(byteArr[start]);
}
else if (type == typeof(short))
{
if (moveIndex)
{
MoveStartIndex(sizeof(short));
}
return(BitConverter.ToInt16(byteArr, start));
}
else if (type == typeof(ushort))
{
if (moveIndex)
{
MoveStartIndex(sizeof(ushort));
}
return(BitConverter.ToUInt16(byteArr, start));
}
else if (type == typeof(bool))
{
if (moveIndex)
{
MoveStartIndex(sizeof(bool));
}
return(BitConverter.ToBoolean(byteArr, start));
}
else if (type == typeof(int))
{
if (moveIndex)
{
MoveStartIndex(sizeof(int));
}
return(BitConverter.ToInt32(byteArr, start));
}
else if (type == typeof(uint))
{
if (moveIndex)
{
MoveStartIndex(sizeof(uint));
}
return(BitConverter.ToUInt32(byteArr, start));
}
else if (type == typeof(float))
{
if (moveIndex)
{
MoveStartIndex(sizeof(float));
}
return(BitConverter.ToSingle(byteArr, start));
}
else if (type == typeof(long))
{
if (moveIndex)
{
MoveStartIndex(sizeof(long));
}
return(BitConverter.ToInt64(byteArr, start));
}
else if (type == typeof(ulong))
{
if (moveIndex)
{
MoveStartIndex(sizeof(ulong));
}
return(BitConverter.ToUInt64(byteArr, start));
}
else if (type == typeof(double))
{
if (moveIndex)
{
MoveStartIndex(sizeof(double));
}
return(BitConverter.ToDouble(byteArr, start));
}
else if (type == typeof(string))
{
return(GetString(start, moveIndex));
}
else if (type == typeof(Vector3D))
{
return(GetVector(start, moveIndex));
}
else if (type.IsArray)
{
int rank = type.GetArrayRank();
Type targetType = type.GetElementType();
//int startingIndex = StartIndex();
MoveStartIndex(sizeof(int));
if (rank > 4)
{
throw new Exception("Currently the system only supports up to 4 dimensions in an array");
}
int i, j, k, l, x, y, z, w;
switch (rank)
{
case 1:
x = GetBasicType <int>(StartIndex(), true);
object[] one = new object[x];
for (i = 0; i < x; i++)
{
one[i] = GetBasicType(targetType, StartIndex(), true);
}
return(one);
case 2:
x = GetBasicType <int>(StartIndex(), true);
y = GetBasicType <int>(StartIndex(), true);
object[,] two = new object[x, y];
for (i = 0; i < x; i++)
{
for (j = 0; j < y; j++)
{
two[i, j] = GetBasicType(targetType, StartIndex(), true);
}
}
return(two);
case 3:
x = GetBasicType <int>(StartIndex(), true);
y = GetBasicType <int>(StartIndex(), true);
z = GetBasicType <int>(StartIndex(), true);
object[,,] three = new object[x, y, z];
for (i = 0; i < x; i++)
{
for (j = 0; j < y; j++)
{
for (k = 0; k < z; k++)
{
three[i, j, k] = GetBasicType(targetType, StartIndex(), true);
}
}
}
return(three);
case 4:
x = GetBasicType <int>(StartIndex(), true);
y = GetBasicType <int>(StartIndex(), true);
z = GetBasicType <int>(StartIndex(), true);
w = GetBasicType <int>(StartIndex(), true);
object[,,,] four = new object[x, y, z, w];
for (i = 0; i < x; i++)
{
for (j = 0; j < y; j++)
{
for (k = 0; k < z; k++)
{
for (l = 0; l < w; l++)
{
four[i, j, k, l] = GetBasicType(targetType, StartIndex(), true);
}
}
}
}
return(four);
}
throw new Exception("Deserialize case not found for this array");
}
else if (type.IsEnum)
{
return(GetBasicType(Enum.GetUnderlyingType(type), start, moveIndex));
}
else
{
throw new Exception("The type " + type.ToString() + " isn't getable from basic type, maybe try one of the other getters?");
}
}
/// <summary>
/// Deserialize a stream of bytes into a message.<br />Use with caution.
/// </summary>
public static Message Deserialize(MemoryStream memoryStream)
{
// if `leaveOpen` is left false, this will dispose the memory stream once the BitEncodedStreamReader is disposed.
// we don't want to dispose the memory stream because we continually reuse it for reading
var rawBufferData = memoryStream.GetBufferWithReflection().Span;
var stream = new BitEncodedSpanReader(rawBufferData);
var scope = (ConnectionScope)stream.ReadByte();
var type = (MessageType)stream.Read7BitEncodedInt();
// i have chosen to initialize the list to this mathemetical number,
// because i don't want it to go from 4 -> 16 -> 64 ...
// and would rather have it start at like 123 if the length is 32 * 123
var argData = new List <object>(rawBufferData.Length / 32);
while (stream.Position < rawBufferData.Length)
{
var patternType = stream.ReadByte();
// it is very common for there to be empty blocks in a world
// this is a minor optimization which will try to excersize that
while (patternType == _patternBooleanFalse)
{
argData.Add(false);
if (stream.Position >= rawBufferData.Length)
{
goto EndOfFunction;
}
patternType = stream.ReadByte();
}
switch (patternType)
{
// we can guarantee that this is not possible, because
// we ruled it out with the optimization above
// case _patternBooleanFalse: argData.Add(false); break;
case _patternIntPos: argData.Add(stream.Read7BitEncodedInt()); break;
case _patternString: argData.Add(stream.ReadString()); break;
case _patternIntNeg: argData.Add(-stream.Read7BitEncodedInt() - 1); break;
case _patternBooleanTrue: argData.Add(true); break;
case _patternDouble: argData.Add(BitConverter.ToDouble(stream.ReadBytes(8))); break;
case _patternBytes:
{
var length = stream.Read7BitEncodedInt();
argData.Add(stream.ReadBytes(length).ToArray());
}
break;
case _patternObject:
{
var objectArgs = new MessageObject();
while (stream.ReadByte() != _patternObjectEnd)
{
stream.Position--;
object value;
switch (stream.ReadByte())
{
case _patternString: value = stream.ReadString(); break;
case _patternIntPos: value = stream.Read7BitEncodedInt(); break;
case _patternIntNeg: value = -stream.Read7BitEncodedInt() - 1; break;
case _patternDouble: value = BitConverter.ToDouble(stream.ReadBytes(8)); break;
case _patternBooleanFalse: value = false; break;
case _patternBooleanTrue: value = true; break;
case _patternBytes:
{
var length = stream.Read7BitEncodedInt();
value = stream.ReadBytes(length).ToArray();
}
break;
default: throw new InvalidDataException($"Invalid pattern type {patternType} in MessageObject.");
}
objectArgs.Add(stream.ReadString(), value);
}
argData.Add(objectArgs);
}
break;
default: throw new InvalidDataException($"Invalid pattern type {patternType}.");
}
}
EndOfFunction:
return(new Message(scope, type, argData.ToArray()));
}
public double PeakDouble()
{
return(BitConverter.ToDouble(bytes, index));
}
public double DecryptToDouble(string cipherText)
{
return(BitConverter.ToDouble(this.Decrypt(Convert.FromBase64String(cipherText)), 0));
}
private object[] ProcessMessageObjects(byte[] message, string name, string format)
{
char[] form = format.ToCharArray();
int offset = 0;
List <object> answer = new List <object>();
foreach (char ch in form)
{
switch (ch)
{
case 'b':
answer.Add((sbyte)message[offset]);
offset++;
break;
case 'B':
answer.Add(message[offset]);
offset++;
break;
case 'h':
answer.Add(BitConverter.ToInt16(message, offset));
offset += 2;
break;
case 'H':
answer.Add(BitConverter.ToUInt16(message, offset));
offset += 2;
break;
case 'i':
answer.Add(BitConverter.ToInt32(message, offset));
offset += 4;
break;
case 'I':
answer.Add(BitConverter.ToUInt32(message, offset));
offset += 4;
break;
case 'q':
answer.Add(BitConverter.ToInt64(message, offset));
offset += 8;
break;
case 'Q':
answer.Add(BitConverter.ToUInt64(message, offset));
offset += 8;
break;
case 'f':
answer.Add(BitConverter.ToSingle(message, offset));
offset += 4;
break;
case 'd':
answer.Add(BitConverter.ToDouble(message, offset));
offset += 8;
break;
case 'c':
answer.Add((BitConverter.ToInt16(message, offset) / 100.0));
offset += 2;
break;
case 'C':
answer.Add((BitConverter.ToUInt16(message, offset) / 100.0));
offset += 2;
break;
case 'e':
answer.Add((BitConverter.ToInt32(message, offset) / 100.0));
offset += 4;
break;
case 'E':
answer.Add((BitConverter.ToUInt32(message, offset) / 100.0));
offset += 4;
break;
case 'L':
answer.Add(((double)BitConverter.ToInt32(message, offset) / 10000000.0));
offset += 4;
break;
case 'n':
answer.Add(ASCIIEncoding.ASCII.GetString(message, offset, 4).Trim(new char[] { '\0' }));
offset += 4;
break;
case 'N':
answer.Add(ASCIIEncoding.ASCII.GetString(message, offset, 16).Trim(new char[] { '\0' }));
offset += 16;
break;
case 'M':
int modeno = message[offset];
answer.Add(modeno);
offset++;
break;
case 'Z':
answer.Add(ASCIIEncoding.ASCII.GetString(message, offset, 64).Trim(new char[] { '\0' }));
offset += 64;
break;
default:
return(null);
}
}
return(answer.ToArray());
}
/// <summary>
/// Reads an 8-byte floating point value from the current stream and advances the current position of the stream by eight bytes.
/// </summary>
/// <returns>A</returns>
public override double ReadDouble()
{
var buffer = ReadByteArrayEndian(8);
return(BitConverter.ToDouble(buffer, 0));
}
/*
* 105 +Format characters in the format string for binary log messages
* 106 + b : int8_t
* 107 + B : uint8_t
* 108 + h : int16_t
* 109 + H : uint16_t
* 110 + i : int32_t
* 111 + I : uint32_t
* 112 + f : float
* d : double
* 113 + N : char[16]
* 114 + c : int16_t * 100
* 115 + C : uint16_t * 100
* 116 + e : int32_t * 100
* 117 + E : uint32_t * 100
* 118 + L : uint32_t latitude/longitude
* 119 + */
/// <summary>
/// Convert to ascii based on the existing format message
/// </summary>
/// <param name="message">raw binary message</param>
/// <param name="name">Message type name</param>
/// <param name="format">format string containing packet structure</param>
/// <returns>formated ascii string</returns>
string ProcessMessage(byte[] message, string name, string format)
{
char[] form = format.ToCharArray();
int offset = 0;
StringBuilder line = new StringBuilder(name, 1024);
foreach (char ch in form)
{
switch (ch)
{
case 'b':
line.Append(", " + (sbyte)message[offset]);
offset++;
break;
case 'B':
line.Append(", " + message[offset]);
offset++;
break;
case 'h':
line.Append(", " +
BitConverter.ToInt16(message, offset)
.ToString(System.Globalization.CultureInfo.InvariantCulture));
offset += 2;
break;
case 'H':
line.Append(", " +
BitConverter.ToUInt16(message, offset)
.ToString(System.Globalization.CultureInfo.InvariantCulture));
offset += 2;
break;
case 'i':
line.Append(", " +
BitConverter.ToInt32(message, offset)
.ToString(System.Globalization.CultureInfo.InvariantCulture));
offset += 4;
break;
case 'I':
line.Append(", " +
BitConverter.ToUInt32(message, offset)
.ToString(System.Globalization.CultureInfo.InvariantCulture));
offset += 4;
break;
case 'q':
line.Append(", " +
BitConverter.ToInt64(message, offset)
.ToString(System.Globalization.CultureInfo.InvariantCulture));
offset += 8;
break;
case 'Q':
line.Append(", " +
BitConverter.ToUInt64(message, offset)
.ToString(System.Globalization.CultureInfo.InvariantCulture));
offset += 8;
break;
case 'f':
line.Append(", " +
BitConverter.ToSingle(message, offset)
.ToString(System.Globalization.CultureInfo.InvariantCulture));
offset += 4;
break;
case 'd':
line.Append(", " +
BitConverter.ToDouble(message, offset)
.ToString(System.Globalization.CultureInfo.InvariantCulture));
offset += 8;
break;
case 'c':
line.Append(", " +
(BitConverter.ToInt16(message, offset) / 100.0).ToString("0.00",
System.Globalization.CultureInfo.InvariantCulture));
offset += 2;
break;
case 'C':
line.Append(", " +
(BitConverter.ToUInt16(message, offset) / 100.0).ToString("0.00",
System.Globalization.CultureInfo.InvariantCulture));
offset += 2;
break;
case 'e':
line.Append(", " +
(BitConverter.ToInt32(message, offset) / 100.0).ToString("0.00",
System.Globalization.CultureInfo.InvariantCulture));
offset += 4;
break;
case 'E':
line.Append(", " +
(BitConverter.ToUInt32(message, offset) / 100.0).ToString("0.00",
System.Globalization.CultureInfo.InvariantCulture));
offset += 4;
break;
case 'L':
line.Append(", " +
((double)BitConverter.ToInt32(message, offset) / 10000000.0).ToString(
System.Globalization.CultureInfo.InvariantCulture));
offset += 4;
break;
case 'n':
line.Append(", " + ASCIIEncoding.ASCII.GetString(message, offset, 4).Trim(new char[] { '\0' }));
offset += 4;
break;
case 'N':
line.Append(", " + ASCIIEncoding.ASCII.GetString(message, offset, 16).Trim(new char[] { '\0' }));
offset += 16;
break;
case 'M':
int modeno = message[offset];
var modes = Common.getModesList(MainV2.comPort.MAV.cs);
string currentmode = "";
foreach (var mode in modes)
{
if (mode.Key == modeno)
{
currentmode = mode.Value;
break;
}
}
line.Append(", " + currentmode);
offset++;
break;
case 'Z':
line.Append(", " + ASCIIEncoding.ASCII.GetString(message, offset, 64).Trim(new char[] { '\0' }));
offset += 64;
break;
default:
return("Bad Conversion");
}
}
line.Append("\r\n");
return(line.ToString());
}
public double ReadDouble(int offset)
{
return(BitConverter.ToDouble(Bytes, RecordContentOffset + offset));
}
public override DataItem GetValue(byte[] input, int index, ref int formattedDataLength)
{
formattedDataLength = sizeof(double);
return(new DataItem(_name, BitConverter.ToDouble(input, index)));
}
