Equivalent of os.Args but on custom input

[Michał Łowicki]

Hi,

I'm working on a program which will have a prompt to enter commands like:

    add "foo bar"

I need what os.Args provides but on custom input so to above input I would like to get:

    []string{"add", "foo bar"}

Package os uses runtime_args(), and it isn't exported nor accepts input. Any idea what can I use instead? As a fallback, I can always implement something like https://stackoverflow.com/a/46973603, but maybe there is a smarter way to do it.

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BR,
Michał Łowicki

[Kurtis Rader]

os.Args simply exposes the arguments passed to the program by the operating system. On UNIX this is typically called "argv" in C/C++ programs. The parsing of those strings into two arguments is done by the shell that runs your elvish program. It is not done by os.Args. I'm not aware of any functionality in the standard Go runtime that does what you want. There are probably third-party packages which do it that you could import. Or, roll your own CLI parser as shown in the stackoverflow question.

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Kurtis Rader

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[Raffaele Sena]

I do something similar for some of my interactive tools and ended up
writing this: https://github.com/gobs/args.
If interested the command parser is here: https://github.com/gobs/cmd.

-- Raffaele

> To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/CABx2%3DD8yDKak6DR7-7wrm-W40PFEKXTFv-Hn45OqKicft%2BvMVw%40mail.gmail.com.

[ben....@compass.com]

There's also Google's shlex package: https://pkg.go.dev/github.com/google/shlex?tab=doc

Incidentally, on Windows Go has to do this manually on startup. See commandLineToArgv in https://golang.org/src/os/exec_windows.go

-Ben