Go Struct Flags

Go Struct Flags is a lightweight, low-level library for mapping command-line flags to Go structs using struct tags.

Installation

go get github.com/mirkobrombin/go-struct-flags

Features

• Simple API: Just one call to Bind() and you are done.
  
• Auto-binding: Automatically maps fields to flags using the standard flag package.
  
• Short & Long flags: Supports both short (e.g., -v) and long (e.g., --verbose) flag names.
  
• Type-safe: Supports bool, string, int, uint, float64 and more.
  

Usage

Define your options struct with flag tags:

type Options struct {
    Verbose bool   `flag:"short:v, long:verbose, name:Enable Verbose Output"`
    Output  string `flag:"short:o, long:output, default:json"`
    Port    int    `flag:"short:p, long:port, default:8080"`
}

func main() {
    opts := &Options{}
    
    // Bind flags to the struct
    structflags.Bind(opts) 
    
    // Parse standard flags
    flag.Parse()
    
    fmt.Printf("Verbose: %v, Port: %d\n", opts.Verbose, opts.Port)
}

Documentation

• Struct Tags
  
• Binder Package
  

License

This project is licensed under the MIT License. See the LICENSE file for details.