/// <summary>
/// Takes a file and breaks it down into IElements then returns it in a structured format
/// </summary>
/// <param name="br">The file to process</param>
/// <param name="fileName">The name of the file to be processed (used only for displaying error messages)</param>
/// <returns>A class containing the processed file data</returns>
public KCFile ParseFile(BinaryReader br, string fileName)
{
KCFile workingFile = new KCFile();
List <IInstruction> instructions = new List <IInstruction>();
DataBox footer = ReadFooter(br);
workingFile.footer = footer;
workingFile.header = ReadHeader(br);
long streamEnd = br.BaseStream.Length - footer.GetContentsSize();
while (br.BaseStream.Position != streamEnd) // will need to check this for accuracy as it has been unreliable in some cases in the past
{
Opcode opcode = FileIOHelper.ReadOpcode(br);
br.BaseStream.Position -= OpcodeInfo.OPCODE_SIZE; // set the position back by 2, the size of the opcodes, as the instruction parsers will expect to given a position starting with an opcode
if (opcode == Opcode.INVALID)
{
string errorMessage = string.Format("There was an unexpected opcode when reading file {0} at position {1} after reading {2} instructions", fileName, br.BaseStream.Position.ToString("X"), instructions.Count.ToString());
MessageBox.Show(errorMessage, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
Environment.Exit(1);
}
IInstruction newInstruction;
Type instructionParserType = OpcodeInfo.GetInstructionParserType(opcode);
if (instructionParserType == typeof(InstructionBox))
{
newInstruction = MakeInstructionBox(opcode);
newInstruction.Read(br);
}
else
{
newInstruction = (IInstruction)Activator.CreateInstance(instructionParserType);
newInstruction.Read(br);
}
instructions.Add(newInstruction);
}
//string finishMessage = string.Format("Parsed file {0} with {1} instructions", fileName, instructions.Count.ToString());
//MessageBox.Show(finishMessage);
workingFile.instructions = instructions;
return(workingFile);
}
