/// <summary>
/// Initializes a new instance of the <see cref="GribFile" /> class. File read rights are shared between processes.
/// </summary>
/// <param name="fileName">Name of the file.</param>
/// <exception cref="System.IO.IOException">Could not open file. See inner exception for more detail.</exception>
/// <exception cref="System.IO.FileLoadException">The file is empty.</exception>
public GribFile(string fileName)
{
FileInfo fi = new FileInfo(fileName);
// need a better check
if (!GribFile.FileIsValid(fileName))
{
throw new FileLoadException("This file is empty or invalid.");
}
_pFileHandleProxy = GribApiNative.CreateFileHandleProxy(fileName);
if (_pFileHandleProxy == IntPtr.Zero)
{
throw new FileLoadException("Could not open file. See inner exception for more detail.", new Win32Exception(Marshal.GetLastWin32Error()));
}
_fileHandleProxy = (FileHandleProxy)Marshal.PtrToStructure(_pFileHandleProxy, typeof(FileHandleProxy));
FileName = fileName;
Reference = new HandleRef(this, _fileHandleProxy.File);
// set the message count here; the result seems to be connected to the message iterator so
// that after you begin iterating messages, the count decreases until it reaches 1.
int count = 0;
GribApiProxy.GribCountInFile(Context, this, out count);
MessageCount = count;
}
/// <summary>
/// Creates a GribMessage instance from a <seealso cref="Grib.Api.GribFile"/>.
/// </summary>
/// <param name="file">The file.</param>
/// <param name="index">The index.</param>
/// <returns></returns>
public static GribMessage Create(GribFile file, int index)
{
GribMessage msg = null;
int err = 0;
// grib_api moves to the next message in a stream for each new handle
GribHandle handle = GribApiProxy.GribHandleNewFromFile(file.Context, file, out err);
if (err != 0)
{
throw GribApiException.Create(err);
}
if (handle != null)
{
msg = new GribMessage(handle, file.Context, index);
}
return(msg);
}
public GribImporter(string inputFile)
{
_inputFile = inputFile;
CorrectFilePath(ref _inputFile);
bool ok = false;
while (!ok)
{
try
{
GribEnvironment.Init();
ok = true;
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
using (var gf = new Grib.Api.GribFile(_inputFile))
_messages = gf.ToArray();
}
/// <summary>
/// Writes all messages in the file to the specified path.
/// </summary>
/// <param name="path">The path.</param>
/// <param name="file">The file.</param>
/// <param name="mode">The mode.</param>
public static void Write(string path, GribFile file, FileMode mode = FileMode.Create)
{
Write(path, file as IEnumerable <GribMessage>, mode);
}
