protected override string GetOffsetDescriptions()
{
StringBuilder sb = new StringBuilder();
// CPI will have one or more repeating groups. The length of each is found in the CPC field
CPC cpcField = LowestLevelContainer.GetStructure <CPC>();
// Single byte code points are length 10, double are length 11
int standardLength = cpcField.IsSingleByteCodePage ? 10 : 11;
// Loop through however many sections we need to
for (int curIndex = 0; curIndex < Data.Length;)
{
// Retrieve the byte sections
byte[] GCGID = GetSectionedData(curIndex, 8);
byte[] PrtFlags = GetSectionedData(curIndex + 8, 1);
byte[] CodePoint = GetSectionedData(curIndex + 9, cpcField.IsSingleByteCodePage ? 1 : 2);
// Display first 3 semantics based on predefined offsets above
sb.AppendLine(Offsets[0].DisplayDataByType(GCGID));
sb.AppendLine(Offsets[1].DisplayDataByType(PrtFlags));
sb.AppendLine(Offsets[2].DisplayDataByType(CodePoint));
// If this code point includes Unicode scalar value entries, parse them here
if (!cpcField.IsSingleByteCodePage)
{
int numScalarValues = Data[standardLength];
for (int i = 0; i < numScalarValues; i += 4)
{
Offset fakeOffset = new Offset(0, Lookups.DataTypes.UBIN, $"Unicode Scalar Value {i + 1}");
// Each scalar value is a four byte UBIN
int startingIndex = standardLength + (i * 4);
byte[] scalarValue = GetSectionedData(startingIndex, 4);
sb.AppendLine(fakeOffset.DisplayDataByType(scalarValue));
}
// Take extra semantics into account
curIndex += 1 + (numScalarValues * 4);
}
sb.AppendLine();
// Go to the next one
curIndex += standardLength;
}
return(sb.ToString());
}
public override void ParseData()
{
int curIndex = 0;
CPC cpcField = LowestLevelContainer.GetStructure <CPC>();
List <Info> allInfo = new List <Info>();
while (curIndex < Data.Length)
{
string gid = GetReadableDataPiece(curIndex + 0, 8);
byte[] codePoints = GetSectionedData(curIndex + 9, cpcField.IsSingleByteCodePage ? 1 : 2);
allInfo.Add(new Info(gid, codePoints));
// 10 bytes RG Length for single bytes, 11 for double
curIndex += cpcField.IsSingleByteCodePage ? 10 : 11;
}
CPIInfos = allInfo;
}
protected override string GetSingleOffsetDescription(Offset oSet, byte[] sectionedData)
{
// Get the object classification triplet from the BOC field in our container
ObjectClassification oc = LowestLevelContainer.GetStructure <BOC>()?.Triplets.OfType <ObjectClassification>().FirstOrDefault();
if (oc != null)
{
StringBuilder sb = new StringBuilder();
string byteLevel = " bytes";
float byteSize = Data.Length;
if (byteSize > 1024)
{
byteSize /= 1024; byteLevel = "KB";
}
if (byteSize > 1024)
{
byteSize /= 1024; byteLevel = "MB";
}
;
if (byteSize % 1 > 0)
{
byteSize = (float)Math.Round(byteSize, 2);
}
string dataType = "UNKNOWN";
if (Lookups.OIDs.ContainsKey(oc.RegisteredObjectID))
{
dataType = Lookups.OIDs[oc.RegisteredObjectID];
}
sb.AppendLine($"Data Type: {dataType}");
sb.AppendLine($"Data Length: {byteSize} {byteLevel}");
return(sb.ToString());
}
return("Could not find BOC/Object Classification Triplet");
}
private string GetOutlineData()
{
StringBuilder sb = new StringBuilder();
// Loop through each repeating group of patterns
FNC refFNC = LowestLevelContainer.GetStructure <FNC>();
int curIndex = 0;
do
{
uint groupLength = GetNumericValueFromData <uint>(0, 4);
uint checksum = GetNumericValueFromData <uint>(4, 4);
sb.AppendLine($"Checksum: {checksum}");
int idLength = GetNumericValueFromData <int>(8, 2);
string id = idLength > 2 ? GetReadableDataPiece(10, idLength - 2) : string.Empty;
sb.AppendLine($"ID: {id}");
// If FNC's pattern tech identifier isn't PFB Type 1, we should have a description
int descriptorLength = !string.IsNullOrEmpty(id) && refFNC.PatternTech != FNC.ePatternTech.PFBType1
? GetNumericValueFromData <ushort>(8 + idLength, 2) : 0;
byte[] descriptor = descriptorLength > 2 ? GetSectionedData(8 + idLength + 2, descriptorLength - 2) : new byte[0];
// Object descriptor
if (descriptor.Length > 0)
{
switch (descriptor[0])
{
case 1: // CMap file
string precedenceCode = descriptor[1] == 0 ? "Primary" : "Auxiliary";
string linkageCode = descriptor[2] == 0 ? "Linked" : "Unlinked";
string writingDirectionCode = descriptor[3] == 1 ? "Horizontal" : descriptor[3] == 2 ? "Vertical" : "Vertical and Horizontal";
string GCSGID = GetReadableDataPiece(8 + idLength + 4, 2);
string CPSGID = GetReadableDataPiece(8 + idLength + 6, 2);
sb.AppendLine($"Precedence Code: {precedenceCode}");
sb.AppendLine($"Linkage Code: {linkageCode}");
sb.AppendLine($"Writing Direction Code: {writingDirectionCode}");
sb.AppendLine($"GCSGID: {GCSGID}");
sb.AppendLine($"CPSGID: {CPSGID}");
break;
case 5: // CID file
precedenceCode = descriptor[1] == 0 ? "Primary" : "Auxiliary";
ushort maxV = GetNumericValueFromData <ushort>(8 + idLength + 2, 2);
ushort maxW = GetNumericValueFromData <ushort>(8 + idLength + 4, 2);
sb.AppendLine($"Precedence Code: {precedenceCode}");
sb.AppendLine($"Max V(y) value: {maxV}");
sb.AppendLine($"Max W(y) value: {maxW}");
break;
case 6: // PFB file
case 7: // AFM file
case 8: // Filename map file
sb.AppendLine("No descriptor info provided.");
break;
}
// Object data
int dataStartIndex = 8 + idLength + descriptorLength;
if (Data.Length > dataStartIndex)
{
byte[] objData = GetSectionedData(dataStartIndex, Data.Length - dataStartIndex);
sb.AppendLine($"Raw Data: {BitConverter.ToString(objData).Replace("-", " ")}");
// Out of curiosity, verify the checksum WE calculate matches up with the one stored! (No current use)
uint testChecksum = GetChecksum(objData);
}
}
} while (curIndex < Data.Length);
return(sb.ToString());
}
