Issue 6 buffer problem

[asannikov]

An error nothing on stdout is occurred in case the token buffer is overflowed.
This error comes form this part of the code:

if !e.scanout.Scan() {
    fms[i].Err = fmt.Errorf("nothing on stdout")
    continue
}

And in core it comes from this part of the code:
https://github.com/golang/go/blob/master/src/bufio/scan.go#L193

[barasher]

I think that the buffer size specification should rather be specified as a functionnal options.

The thing that bothers me with this implementation (a method on the ExifTool struct) is that users could think that the buffer size could be set after ExifTool initiatialization, but it doesn't.

Could you please change your implementation to fit a functionnal option (func WithBufferSize func(*Exiftool) error { ... }) ? The NewExifTool function already accepts functionnal options.

[barasher]

I don't mention unit-tests and the update of the documentation :)

[barasher]

@asannikov > Hi, I've reviewed your PR, I have some suggestions.
Thanks again !

[barasher]

@asannikov > do you want me to do the changes ?

[asannikov]

@barasher

@asannikov > do you want me to do the changes ?

yes please. i do not really understand how to implement that in your way.
NewExiftool has an object initialisation. It means there is no choice where to define custom logic. Probably i understand your message wrong. please correct me.

[barasher]

I integrated your change "manually", see issue #6