public async Task <Stream> OpenFileForWriteAsync(string path)
{
path = GetLocalVfsPath(path);
try
{
IntPtr hStream = PinvokeFilesystem.CreateFileFromApp((@"\\?\" + path), PinvokeFilesystem.GENERIC_WRITE | PinvokeFilesystem.GENERIC_READ, 0, IntPtr.Zero, PinvokeFilesystem.OPEN_ALWAYS, (uint)PinvokeFilesystem.File_Attributes.BackupSemantics, IntPtr.Zero);
return(new FileStream(hStream, FileAccess.ReadWrite));
} catch {
var file = await StorageFile.GetFileFromPathAsync(path);
return(await file.OpenStreamForWriteAsync());
}
}
public async Task <Stream> CreateFileForWriteAsync(string path)
{
path = GetLocalVfsPath(path);
string parentPath = Path.GetDirectoryName(path);
var parentexists = ItemExists(parentPath);
if (!parentexists)
{
await RecursivelyCreateDirectoryAsync(parentPath);
}
IntPtr hStream = PinvokeFilesystem.CreateFileFromApp(path, PinvokeFilesystem.GENERIC_WRITE, 0, IntPtr.Zero, PinvokeFilesystem.CREATE_ALWAYS, (uint)PinvokeFilesystem.File_Attributes.BackupSemantics, IntPtr.Zero);
return(new FileStream(hStream, FileAccess.Write));
}
public async Task <Stream> OpenFileForReadAsync(string path)
{
path = GetLocalVfsPath(path);
try
{
IntPtr hStream = PinvokeFilesystem.CreateFileFromApp((@"\\?\" + path), PinvokeFilesystem.GENERIC_READ, 0, IntPtr.Zero, PinvokeFilesystem.OPEN_ALWAYS, 4, IntPtr.Zero);
return(new FileStream(hStream, FileAccess.Read));
}
catch
{
var file = await StorageFile.GetFileFromPathAsync(path);
return(await file.OpenStreamForReadAsync());
}
}
