IEnumerable<Tag> ParseTags(ExifToolResult result)
{
var tags = Options.Parser.ParseTags(result.Output);
_process.Dispose();
return tags;
}
// http://stackoverflow.com/questions/10788982/is-there-any-async-equivalent-of-process-start
Task<ExifToolResult> RunProcessAsync(ProcessStartInfo psi, Stream stream)
{
var tcs = new TaskCompletionSource<ExifToolResult>();
_process = new Process
{
StartInfo = psi,
EnableRaisingEvents = true
};
_process.Exited += (sender, args) =>
{
var result = new ExifToolResult {
Output = _process.StandardOutput
};
tcs.SetResult(result);
};
try
{
_process.Start();
if(stream != null)
{
stream.CopyTo(_process.StandardInput.BaseStream);
_process.StandardInput.Flush();
_process.StandardInput.Dispose();
}
}
catch (Win32Exception ex)
{
throw new Exception("Error when trying to start the exiftool process. Please make sure exiftool is installed, and its path is properly specified in the options.", ex);
}
return tcs.Task;
}