//static GribEnvironment ()
//{
// GribEnvironment.Init();
// // grib_api discourages enabling multi-fields, however leaving it disabled has caused
// // considerable confusion among users.
// GribContext.Default.EnableMultipleFieldMessages = true;
//}
/// <summary>
/// Initializes GribApi.NET. In very rare cases, you may need to call this method directly
/// to ensure the native libraries are bootstrapped and the environment setup correctly.
/// </summary>
/// <exception cref="System.ComponentModel.Win32Exception"></exception>
public static void Init()
{
lock (_initLock)
{
if (Initialized)
{
return;
}
Initialized = true;
if (String.IsNullOrWhiteSpace(Environment.GetEnvironmentVariable("GRIB_API_NO_ABORT")))
{
NoAbort = true;
}
string definitions = Environment.GetEnvironmentVariable("GRIB_DEFINITION_PATH");
if (String.IsNullOrWhiteSpace(definitions))
{
GribEnvironmentLoadHelper.TryFindDefinitions(out definitions);
}
AssertValidEnvironment(definitions);
_libHandle = GribEnvironmentLoadHelper.BootStrapLibrary();
GribApiNative.HookGribExceptions();
SamplesPath = definitions.Remove(definitions.LastIndexOf("definitions")) + "samples";
DefinitionsPath = definitions;
}
}
static GribEnvironment()
{
if (Initialized)
{
return;
}
lock (_initLock)
{
Initialized = true;
if (String.IsNullOrWhiteSpace(Environment.GetEnvironmentVariable("GRIB_API_NO_ABORT")))
{
NoAbort = true;
}
string definitions = Environment.GetEnvironmentVariable("GRIB_DEFINITION_PATH");
if (String.IsNullOrWhiteSpace(definitions))
{
GribEnvironmentLoadHelper.TryFindDefinitions(out definitions);
}
AssertValidEnvironment(definitions);
_libHandle = GribEnvironmentLoadHelper.BootStrapLibrary();
GribApiNative.HookGribExceptions();
SamplesPath = definitions.Remove(definitions.LastIndexOf("definitions")) + "samples";
DefinitionsPath = definitions;
// grib_api discourages enabling multi-fields because they do not use them regularly and do not feel they
// are well-tested, however leaving them disabled has caused considerable confusion among users.
GribContext.Default.EnableMultipleFieldMessages = true;
}
}
/// <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 (fi.Length < 4)
{
throw new FileLoadException("This file is empty or invalid.");
}
_pFileHandleProxy = GribApiNative.CreateFileHandleProxy(fileName);
if (_pFileHandleProxy == IntPtr.Zero)
{
throw new IOException("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);
Context = GribApiProxy.GribContextGetDefault();
// 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>
/// Called when [dispose].
/// </summary>
/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected override void OnDispose(bool disposing)
{
if (_pFileHandleProxy != IntPtr.Zero)
{
GribApiNative.DestroyFileHandleProxy(_pFileHandleProxy);
}
}
/// <summary>
/// Called when [dispose].
/// </summary>
/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected override void OnDispose(bool disposing)
{
if (this._nearest != null)
{
this._nearest.Dispose();
}
if (_pFileHandleProxy != IntPtr.Zero)
{
GribApiNative.DestroyFileHandleProxy(_pFileHandleProxy);
}
}
/// <summary>
/// Resets the underlying file pointer to the beginning of the file.
/// </summary>
public void Rewind()
{
GribApiNative.RewindFileHandleProxy(this._pFileHandleProxy);
}
/// <summary>
/// Initializes a new instance of the <see cref="GribContext"/> class.
/// </summary>
/// <param name="h">The h.</param>
public GribContext(IntPtr h)
: base(h)
{
GribApiNative.GribSetContextLogger(h, this.OnLogReceived);
}
