public override void Open(IGeoModel model)
{
Debug.Assert(model != null);
builder = model.CreateGridBuilder();
Debug.Assert(builder != null);
using (ILineReader lineReader = new SkippingLineReader(Location.LocalPath))
{
ReadHeader(lineReader);
BuildGridParameters();
switch (maxFieldCode)
{
case 3:
// XYZ points not supported
// TODO: Signal not supported
break;
case 5:
ReadFiveColumnGrid(lineReader);
break;
case 7:
ReadFiveColumnGrid(lineReader); // Ignore the ID and name columns
break;
default:
// Unknown
// TODO: Inform user.
break;
}
}
builder.Build();
}
public override void Open(IGeoModel model)
{
Debug.Assert(model != null);
builder = model.CreateGridBuilder();
Debug.Assert(builder != null);
using (FileStream stream = new FileStream(Location.LocalPath, FileMode.Open, FileAccess.Read))
using (BinaryReader reader = EndianBinaryReader.CreateForBigEndianData(stream))
{
// We keep track of our own length rather than testing for EOF which is
// inefficient with FileStream
long length = stream.Length;
if (length < 4)
{
throw new OpenException("EarthVision Binary File too short");
}
long position = 0;
bool foundMagic = ReadMagic(reader);
if (!foundMagic)
{
StringBuilder message = new StringBuilder();
message.AppendFormat("Incorrect EarthVision Binary Grid header");
throw new OpenException(message.ToString());
}
position += 4;
while (position < length)
{
ReadRecord(reader, ref position);
}
}
builder.Build();
}
public override void Open(IGeoModel model)
{
Debug.Assert(model != null);
builder = model.CreateGridBuilder();
ReadHeader();
ReadBody();
builder.Build();
}
public override void Open(IGeoModel model)
{
Debug.Assert(model != null);
builder = model.CreateGridBuilder();
using (LineReader lineReader = new LineReader(Location.LocalPath))
{
try
{
ReadHeader(lineReader);
ReadRowMajorGrid(lineReader);
}
catch (EndOfStreamException endOfStreamException)
{
throw new OpenException("Unexpected end of file", Location, endOfStreamException);
}
}
builder.Build();
}
public void Read(ILineReader lineReader, IGeoModel model)
{
// Pre-condition: The next line to be read will be the first line
// of the header
builder = model.CreateGridBuilder();
try
{
ReadHeader(lineReader);
parameters.VerifyAndCompleteParameters();
parameters.Build(builder);
ReadBody(lineReader);
}
catch (FormatException formatException)
{
StringBuilder message = new StringBuilder();
message.AppendFormat("Unable to parse ZMap file at line {0} because {1}", lineReader.PhysicalLineNumber, formatException.Message);
throw new OpenException(message.ToString());
}
builder.Build();
}
public override void Open(IGeoModel model)
{
Debug.Assert(model != null);
builder = model.CreateGridBuilder();
DetermineType();
switch (subType)
{
case SubType.SurferAscii:
OpenSurferAscii();
break;
case SubType.Surfer6Binary:
OpenSurfer6Binary();
break;
case SubType.Surfer7Binary:
OpenSurfer7Binary();
break;
default:
throw new OpenException("Not recognised as a Golden Software Surfer Binary grid file", Location);
}
builder.Build();
}
