/// <summary>
/// Reads the file at the specified file path.
/// </summary>
/// <param name="path">The specified path to read from.</param>
/// <param name="callback">Callback for Filekit to call when file is read.</param>
public static void ReadFile(string path, FileReadComplete callback)
{
#if BROWSER
GCHandle filepathHandle = new GCHandle();
try
{
Int32 filepathLength;
filepathHandle = Common.NewUTF8String(path, out filepathLength);
UInt32 size;
var fileSizeResult = trail_flk_get_file_size(
SDK.Raw,
filepathHandle.AddrOfPinnedObject(),
filepathLength,
out size
);
if (size > int.MaxValue)
{
callback.Invoke(Result.FLKFileTooBig, null, 0);
return;
}
if (fileSizeResult.IsError())
{
callback.Invoke(fileSizeResult, null, 0);
}
var data = new byte[(int)size];
var wrapper = new FileReadWrapper(data, (int)size, callback);
trail_flk_read_file(
SDK.Raw,
filepathHandle.AddrOfPinnedObject(),
filepathLength,
wrapper.arrayHandle.AddrOfPinnedObject(),
size,
Marshal.GetFunctionPointerForDelegate(new ReadFileCB(FileKit.OnReadFileCB)),
GCHandle.ToIntPtr(GCHandle.Alloc(wrapper))
);
}
finally { filepathHandle.Free(); }
#else
callback.Invoke(Result.InternalError, null, 0);
#endif
}
private static void OnReadFileCB(Result result, IntPtr data)
{
var handle = GCHandle.FromIntPtr(data);
FileReadWrapper wrapper = null;
try
{
wrapper = (FileReadWrapper)handle.Target;
wrapper.Done(result);
}
finally
{
handle.Free();
if (wrapper != null)
{
wrapper.arrayHandle.Free();
}
}
}
