You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 
gitea/vendor/github.com/jessevdk/go-flags
Antoine GIRARD 9fe4437bda Use vendored go-swagger (#8087) 5 years ago
..
.travis.yml Use vendored go-swagger (#8087) 5 years ago
LICENSE Use vendored go-swagger (#8087) 5 years ago
README.md Use vendored go-swagger (#8087) 5 years ago
arg.go Use vendored go-swagger (#8087) 5 years ago
check_crosscompile.sh Use vendored go-swagger (#8087) 5 years ago
closest.go Use vendored go-swagger (#8087) 5 years ago
command.go Use vendored go-swagger (#8087) 5 years ago
completion.go Use vendored go-swagger (#8087) 5 years ago
convert.go Use vendored go-swagger (#8087) 5 years ago
error.go Use vendored go-swagger (#8087) 5 years ago
flags.go Use vendored go-swagger (#8087) 5 years ago
group.go Use vendored go-swagger (#8087) 5 years ago
help.go Use vendored go-swagger (#8087) 5 years ago
ini.go Use vendored go-swagger (#8087) 5 years ago
man.go Use vendored go-swagger (#8087) 5 years ago
multitag.go Use vendored go-swagger (#8087) 5 years ago
option.go Use vendored go-swagger (#8087) 5 years ago
optstyle_other.go Use vendored go-swagger (#8087) 5 years ago
optstyle_windows.go Use vendored go-swagger (#8087) 5 years ago
parser.go Use vendored go-swagger (#8087) 5 years ago
termsize.go Use vendored go-swagger (#8087) 5 years ago
termsize_nosysioctl.go Use vendored go-swagger (#8087) 5 years ago
tiocgwinsz_bsdish.go Use vendored go-swagger (#8087) 5 years ago
tiocgwinsz_linux.go Use vendored go-swagger (#8087) 5 years ago
tiocgwinsz_other.go Use vendored go-swagger (#8087) 5 years ago

README.md

go-flags: a go library for parsing command line arguments

GoDoc Build Status Coverage Status

This library provides similar functionality to the builtin flag library of go, but provides much more functionality and nicer formatting. From the documentation:

Package flags provides an extensive command line option parser. The flags package is similar in functionality to the go builtin flag package but provides more options and uses reflection to provide a convenient and succinct way of specifying command line options.

Supported features:

  • Options with short names (-v)
  • Options with long names (--verbose)
  • Options with and without arguments (bool v.s. other type)
  • Options with optional arguments and default values
  • Multiple option groups each containing a set of options
  • Generate and print well-formatted help message
  • Passing remaining command line arguments after -- (optional)
  • Ignoring unknown command line options (optional)
  • Supports -I/usr/include -I=/usr/include -I /usr/include option argument specification
  • Supports multiple short options -aux
  • Supports all primitive go types (string, int{8..64}, uint{8..64}, float)
  • Supports same option multiple times (can store in slice or last option counts)
  • Supports maps
  • Supports function callbacks
  • Supports namespaces for (nested) option groups

The flags package uses structs, reflection and struct field tags to allow users to specify command line options. This results in very simple and concise specification of your application options. For example:

type Options struct {
	Verbose []bool `short:"v" long:"verbose" description:"Show verbose debug information"`
}

This specifies one option with a short name -v and a long name --verbose. When either -v or --verbose is found on the command line, a 'true' value will be appended to the Verbose field. e.g. when specifying -vvv, the resulting value of Verbose will be {[true, true, true]}.

Example:

var opts struct {
	// Slice of bool will append 'true' each time the option
	// is encountered (can be set multiple times, like -vvv)
	Verbose []bool `short:"v" long:"verbose" description:"Show verbose debug information"`

	// Example of automatic marshalling to desired type (uint)
	Offset uint `long:"offset" description:"Offset"`

	// Example of a callback, called each time the option is found.
	Call func(string) `short:"c" description:"Call phone number"`

	// Example of a required flag
	Name string `short:"n" long:"name" description:"A name" required:"true"`

	// Example of a value name
	File string `short:"f" long:"file" description:"A file" value-name:"FILE"`

	// Example of a pointer
	Ptr *int `short:"p" description:"A pointer to an integer"`

	// Example of a slice of strings
	StringSlice []string `short:"s" description:"A slice of strings"`

	// Example of a slice of pointers
	PtrSlice []*string `long:"ptrslice" description:"A slice of pointers to string"`

	// Example of a map
	IntMap map[string]int `long:"intmap" description:"A map from string to int"`
}

// Callback which will invoke callto:<argument> to call a number.
// Note that this works just on OS X (and probably only with
// Skype) but it shows the idea.
opts.Call = func(num string) {
	cmd := exec.Command("open", "callto:"+num)
	cmd.Start()
	cmd.Process.Release()
}

// Make some fake arguments to parse.
args := []string{
	"-vv",
	"--offset=5",
	"-n", "Me",
	"-p", "3",
	"-s", "hello",
	"-s", "world",
	"--ptrslice", "hello",
	"--ptrslice", "world",
	"--intmap", "a:1",
	"--intmap", "b:5",
	"arg1",
	"arg2",
	"arg3",
}

// Parse flags from `args'. Note that here we use flags.ParseArgs for
// the sake of making a working example. Normally, you would simply use
// flags.Parse(&opts) which uses os.Args
args, err := flags.ParseArgs(&opts, args)

if err != nil {
	panic(err)
}

fmt.Printf("Verbosity: %v\n", opts.Verbose)
fmt.Printf("Offset: %d\n", opts.Offset)
fmt.Printf("Name: %s\n", opts.Name)
fmt.Printf("Ptr: %d\n", *opts.Ptr)
fmt.Printf("StringSlice: %v\n", opts.StringSlice)
fmt.Printf("PtrSlice: [%v %v]\n", *opts.PtrSlice[0], *opts.PtrSlice[1])
fmt.Printf("IntMap: [a:%v b:%v]\n", opts.IntMap["a"], opts.IntMap["b"])
fmt.Printf("Remaining args: %s\n", strings.Join(args, " "))

// Output: Verbosity: [true true]
// Offset: 5
// Name: Me
// Ptr: 3
// StringSlice: [hello world]
// PtrSlice: [hello world]
// IntMap: [a:1 b:5]
// Remaining args: arg1 arg2 arg3

More information can be found in the godocs: http://godoc.org/github.com/jessevdk/go-flags