I know you can specify command line flags and run your binary file against them like this:
./binary -output=html -type=doc
However, I was looking at the implementation of this Go package: https://github.com/jteeuwen/go-bindata
I'm wondering how the author is able to enable the user to run the commands like this
go-bindata /data
instead of
./go-bindata -target=/data
Appreciate some help in case I missed out anything!
The trick is to use flag.Args() which is, simply, the non flag arguments following the flags. You can either fetch the entire list, or get a specific arg with flag.Arg(i). See http://golang.org/pkg/flag/#Args
And from the source of the program you posted:
// Create input configurations.
c.Input = make([]bindata.InputConfig, flag.NArg())
for i := range c.Input {
c.Input[i] = parseInput(flag.Arg(i))
}