You could, perhaps, use ioutil.ReadAll and then typeswitch for the common types (strings, []byte, the numerics) that you can easily handle. If the given receiver was not of one of those types, try to cast it to an encoding.BinaryUnmarshaler and/or encoding.TextUnmarshaler since that's essentially what you're doing. Let the user implement the type specific unmarshalling. Document the expectations for the library user. :)
//jb ons 19 okt. 2016 kl 23:25 skrev Brian Picciano <mediocregop...@gmail.com>: > Hi Ian! I don't think that would work, my data can be pretty much any > arbitrary data, including binary data. So I would need to tell Fscan to > ignore any spaces it sees in the data itself, and then somehow accept the > space which I replaced from EOF. > > On Wed, Oct 19, 2016 at 8:38 AM Ian Davis <m...@iandavis.com> wrote: > > > On Wed, Oct 19, 2016, at 03:34 PM, Brian Picciano wrote: > > Hi there! My use-case involves reading all data off of an io.Reader and > scanning it into a receiver value provided by the user of my library. In > many ways the same thing as fmt.Fscan. The difference is that only one > receiver value is allowed, and I want to read _all_ data until io.EOF, not > just until space or newline. So if my data is "hello world" and I'm > scanning into a string, that string should have "hello world" in it. If my > data is "12 OK" and I'm scanning into an int, that should error because the > entirety of the data is not a parseable integer. > > If there was a fmt.Scanf which simply had no delimiter, or where the > delimiter was somehow set to io.EOF, I think that would work for what I'm > doing. But I can't find anything like that. Does anyone know of anything > that could help me do this? Or do I just have to implement it myself? > > > Could you write a Reader that send a delimiter in the stream when it > encounters io.EOF? Then pass that reader to Fscan. > > Ian > > -- > > You received this message because you are subscribed to a topic in the > Google Groups "golang-nuts" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/golang-nuts/3_QJ6qK5Hqw/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > golang-nuts+unsubscr...@googlegroups.com. > > > For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "golang-nuts" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to golang-nuts+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
