add value vithh error (#1)

Co-authored-by: andrey1s <andrey@4devs.pro>
Reviewed-on: https://gitoa.ru/go-4devs/console/pulls/1
Co-authored-by: andrey <andrey@4devs.io>
Co-committed-by: andrey <andrey@4devs.io>

.drone.yml

@@ -3,7 +3,7 @@ name: default
 
 steps:
 - name: golangci-lint
-  image: golangci/golangci-lint:v1.26
+  image: golangci/golangci-lint:v1.49
   volumes:
     - name: deps
       path: /go/src/mod

.golangci.yml

@@ -16,6 +16,9 @@ linters-settings:
         mnd:
           # don't include the "operation" and "assign"
           checks: argument,case,condition,return
+          ignored-functions:
+            - "strconv.*"
+            - "strings.*"
     govet:
       check-shadowing: true
     lll:
@@ -24,9 +27,27 @@ linters-settings:
       suggest-new: true
     misspell:
       locale: US  
+    varnamelen:
+      min-name-length: 2
+    staticcheck:
+      checks: ["all","-SA1030"]
 
 linters:
     enable-all: true
+    disable:
+      - varcheck
+      - maligned
+      - scopelint
+      - nosnakecase
+      - ifshort
+      - golint
+      - interfacer
+      - structcheck
+      - deadcode
+      - exhaustivestruct
+
+      - ireturn
+      - exhaustruct
 
 issues:
   # Excluding configuration per-path, per-linter, per-text and per-source
@@ -34,3 +55,7 @@ issues:
     - path: _test\.go
       linters:
         - gomnd
+        - varnamelen
+    - path: input/variable
+      linters:
+        - dupl

app.go

@@ -25,9 +25,7 @@ func WithInput(in input.Input) func(*App) {
 
 // WithSkipArgs sets how many arguments are passed. For example, you don't need to pass the name of a single command.
 func WithSkipArgs(l int) func(*App) {
-	return func(a *App) {
-		a.skipArgv = l
-	}
+	return WithInput(input.NewArgs(l))
 }
 
 // WithExit sets exit callback by default os.Exit.
@@ -39,35 +37,17 @@ func WithExit(f func(int)) func(*App) {
 
 // New creates and configure new console app.
 func New(opts ...func(*App)) *App {
-	a := &App{
+	app := &App{
 		out:  output.Stdout(),
 		exit: os.Exit,
+		in:   input.NewArgs(0),
 	}
 
 	for _, opt := range opts {
-		opt(a)
-	}
-
-	if a.in == nil {
-		skip := 2
-
-		switch {
-		case a.skipArgv > 0 && len(os.Args) > a.skipArgv:
-			skip = a.skipArgv
-		case a.skipArgv > 0:
-			skip = len(os.Args)
-		case len(os.Args) == 1:
-			skip = 1
-		case len(os.Args) > 1 && os.Args[1][0] == '-':
-			skip = 1
+		opt(app)
 	}
 
-		a.in = &input.Argv{
-			Args: os.Args[skip:],
-		}
-	}
-
-	return a
+	return app
 }
 
 // App is collection of command and configure env.
@@ -75,7 +55,6 @@ type App struct {
 	cmds []*Command
 	out  output.Output
 	in   input.Input
-	skipArgv int
 	exit func(int)
 }
 

app_test.go

@@ -5,7 +5,6 @@ import (
 	"os"
 
 	"gitoa.ru/go-4devs/console"
-	"gitoa.ru/go-4devs/console/example/pkg/command"
 )
 
 //nolint:lll
@@ -56,9 +55,18 @@ func ExampleNew_list() {
 	console.New(console.WithExit(func(int) {})).
 		Add(
 			Command(),
-			command.Hello(),
-			command.Args(),
-			command.Namespace(),
+			&console.Command{
+				Name:        "fdevs:console:arg",
+				Description: "Understanding how Console Arguments and Options Are Handled",
+			},
+			&console.Command{
+				Name:        "fdevs:console:hello",
+				Description: "example hello command",
+			},
+			&console.Command{
+				Name:        "app:start",
+				Description: "example command in other namespace",
+			},
 		).
 		Execute(ctx)
 	// Output:

command.go

@@ -17,38 +17,38 @@ type (
 )
 
 // WithPrepare append middleware for configuration command.
-func WithPrepare(p ...Prepare) Option {
+func WithPrepare(prepares ...Prepare) Option {
 	return func(c *Command) {
 		if c.Prepare != nil {
-			p = append([]Prepare{c.Prepare}, p...)
+			prepares = append([]Prepare{c.Prepare}, prepares...)
 		}
 
-		c.Prepare = ChainPrepare(p...)
+		c.Prepare = ChainPrepare(prepares...)
 	}
 }
 
 // WithHandle append middleware for executed command.
-func WithHandle(h ...Handle) Option {
+func WithHandle(handles ...Handle) Option {
 	return func(c *Command) {
 		if c.Handle != nil {
-			h = append([]Handle{c.Handle}, h...)
+			handles = append([]Handle{c.Handle}, handles...)
 		}
 
-		c.Handle = ChainHandle(h...)
+		c.Handle = ChainHandle(handles...)
 	}
 }
 
 // WithHidden sets hidden command.
-func WithHidden(v bool) Option {
+func WithHidden(hidden bool) Option {
 	return func(c *Command) {
-		c.Hidden = v
+		c.Hidden = hidden
 	}
 }
 
 // WithName sets name command.
-func WithName(n string) Option {
+func WithName(name string) Option {
 	return func(c *Command) {
-		c.Name = n
+		c.Name = name
 	}
 }
 
@@ -125,13 +125,13 @@ func (c *Command) Init(ctx context.Context, cfg *input.Definition) error {
 
 // ChainPrepare creates middleware for configures command.
 func ChainPrepare(prepare ...Prepare) Prepare {
-	n := len(prepare)
-	if n == 1 {
+	num := len(prepare)
+	if num == 1 {
 		return prepare[0]
 	}
 
-	if n > 1 {
-		lastI := n - 1
+	if num > 1 {
+		lastI := num - 1
 
 		return func(ctx context.Context, def *input.Definition, next Configure) error {
 			var (
@@ -161,13 +161,13 @@ func ChainPrepare(prepare ...Prepare) Prepare {
 
 // ChainHandle creates middleware for executes command.
 func ChainHandle(handlers ...Handle) Handle {
-	n := len(handlers)
-	if n == 1 {
+	num := len(handlers)
+	if num == 1 {
 		return handlers[0]
 	}
 
-	if n > 1 {
-		lastI := n - 1
+	if num > 1 {
+		lastI := num - 1
 
 		return func(ctx context.Context, in input.Input, out output.Output, next Action) error {
 			var (

command_test.go

@@ -8,7 +8,6 @@ import (
 	"time"
 
 	"gitoa.ru/go-4devs/console"
-	"gitoa.ru/go-4devs/console/example/pkg/command"
 	"gitoa.ru/go-4devs/console/input"
 	"gitoa.ru/go-4devs/console/input/argument"
 	"gitoa.ru/go-4devs/console/input/option"
@@ -18,7 +17,7 @@ import (
 //nolint:gochecknoinits
 func init() {
 	console.MustRegister(Command().With(console.WithName("fdevs:console:test")))
-	console.MustRegister(command.Args())
+	console.MustRegister(Command().With(console.WithName("fdevs:console:arg")))
 }
 
 func Command() *console.Command {
@@ -38,10 +37,10 @@ func Command() *console.Command {
 		Configure: func(ctx context.Context, def *input.Definition) error {
 			def.
 				SetArguments(
-					argument.New("test_argument", "test argument"),
+					argument.String("test_argument", "test argument"),
 				).
 				SetOptions(
-					option.New("string", "array string", option.Array),
+					option.String("string", "array string", option.Array),
 					option.Bool("bool", "test bool option"),
 					option.Duration("duration", "test duration with default", option.Default(time.Second)),
 				)
@@ -52,6 +51,8 @@ func Command() *console.Command {
 }
 
 func TestChainPrepare(t *testing.T) {
+	t.Parallel()
+
 	var cnt int32
 
 	ctx := context.Background()
@@ -86,10 +87,14 @@ func TestChainPrepare(t *testing.T) {
 }
 
 func TestChainHandle(t *testing.T) {
+	t.Parallel()
+
 	var cnt int32
 
 	ctx := context.Background()
-	in := &input.Array{}
+	in := &input.Array{
+		Map: input.Map{},
+	}
 	out := output.Stdout()
 
 	handle := func(ctx context.Context, in input.Input, out output.Output, next console.Action) error {

console.go

@@ -86,14 +86,14 @@ func verbose(ctx context.Context, in input.Input, out output.Output) output.Outp
 	case in.Option(ctx, "quiet").Bool():
 		out = output.Quiet()
 	default:
-		v := in.Option(ctx, "verbose").Bools()
+		verb := in.Option(ctx, "verbose").Bools()
 
 		switch {
-		case len(v) == verboseInfo:
+		case len(verb) == verboseInfo:
 			out = output.Verbosity(out, verbosity.Info)
-		case len(v) == verboseDebug:
+		case len(verb) == verboseDebug:
 			out = output.Verbosity(out, verbosity.Debug)
-		case len(v) >= verboseTrace:
+		case len(verb) >= verboseTrace:
 			out = output.Verbosity(out, verbosity.Trace)
 		default:
 			out = output.Verbosity(out, verbosity.Norm)
@@ -104,9 +104,9 @@ func verbose(ctx context.Context, in input.Input, out output.Output) output.Outp
 }
 
 func showHelp(ctx context.Context, cmd *Command, in input.Input, out output.Output) error {
-	a := &input.Array{}
-	a.SetArgument(HelpArgumentCommandName, value.New(cmd.Name))
-	a.SetOption("help", value.New(false))
+	arr := &input.Array{}
+	arr.SetArgument(HelpArgumentCommandName, value.New(cmd.Name))
+	arr.SetOption("help", value.New(false))
 
 	if _, err := Find(cmd.Name); errors.Is(err, ErrNotFound) {
 		register(cmd)
@@ -117,7 +117,7 @@ func showHelp(ctx context.Context, cmd *Command, in input.Input, out output.Outp
 		return err
 	}
 
-	w := input.Chain(a, in)
+	w := input.Chain(arr, in)
 
 	return Run(ctx, help, w, out)
 }
@@ -127,11 +127,11 @@ func Default(d *input.Definition) *input.Definition {
 	return d.SetOptions(
 		option.Bool("no-ansi", "Disable ANSI output"),
 		option.Bool("ansi", "Do not ask any interactive question"),
-		option.Bool("version", "Display this application version", option.Short("V")),
-		option.Bool("help", "Display this help message", option.Short("h")),
+		option.Bool("version", "Display this application version", option.Short('V')),
+		option.Bool("help", "Display this help message", option.Short('h')),
 		option.Bool("verbose",
 			"Increase the verbosity of messages: -v for info output, -vv for debug and -vvv for trace",
-			option.Short("v"), option.Array),
-		option.Bool("quiet", "Do not output any message", option.Short("q")),
+			option.Short('v'), option.Array),
+		option.Bool("quiet", "Do not output any message", option.Short('q')),
 	)
 }

doc.go

@@ -2,11 +2,14 @@
 // The Console package allows you to create command-line commands.
 // Your console commands can be used for any recurring task, such as cronjobs, imports, or other batch jobs.
 // console application can be written as follows:
+//
 //	//cmd/console/main.go
 //	func main() {
 //	  console.New().Execute(context.Background())
 //	}
+//
 // Then, you can register the commands using Add():
+//
 //	package main
 //
 //	import (

example/pkg/command/args.go

@@ -2,6 +2,7 @@ package command
 
 import (
 	"context"
+	"time"
 
 	"gitoa.ru/go-4devs/console"
 	"gitoa.ru/go-4devs/console/input"
@@ -15,9 +16,10 @@ func Args() *console.Command {
 		Description: "Understanding how Console Arguments and Options Are Handled",
 		Configure: func(ctx context.Context, def *input.Definition) error {
 			def.SetOptions(
-				option.Bool("foo", "foo option", option.Short("f")),
-				option.New("bar", "required bar option", option.Required, option.Short("b")),
-				option.New("cat", "cat option", option.Short("c")),
+				option.Bool("foo", "foo option", option.Short('f')),
+				option.String("bar", "required bar option", option.Required, option.Short('b')),
+				option.String("cat", "cat option", option.Short('c')),
+				option.Time("time", "time example"),
 			)
 
 			return nil
@@ -26,6 +28,7 @@ func Args() *console.Command {
 			out.Println(ctx, "foo: <info>", in.Option(ctx, "foo").Bool(), "</info>")
 			out.Println(ctx, "bar: <info>", in.Option(ctx, "bar").String(), "</info>")
 			out.Println(ctx, "cat: <info>", in.Option(ctx, "cat").String(), "</info>")
+			out.Println(ctx, "time: <info>", in.Option(ctx, "time").Time().Format(time.RFC3339), "</info>")
 
 			return nil
 		},

example/pkg/command/create_user.go

@@ -6,6 +6,7 @@ import (
 	"gitoa.ru/go-4devs/console"
 	"gitoa.ru/go-4devs/console/input"
 	"gitoa.ru/go-4devs/console/input/argument"
+	"gitoa.ru/go-4devs/console/input/variable"
 	"gitoa.ru/go-4devs/console/output"
 )
 
@@ -15,7 +16,7 @@ func CreateUser(required bool) *console.Command {
 		Description: "Creates a new user.",
 		Help:        "This command allows you to create a user...",
 		Configure: func(ctx context.Context, cfg *input.Definition) error {
-			var opts []func(*argument.Argument)
+			var opts []variable.Option
 			if required {
 				opts = append(opts, argument.Required)
 			}

example/pkg/command/create_user_test.go

@@ -12,6 +12,8 @@ import (
 )
 
 func TestCreateUser(t *testing.T) {
+	t.Parallel()
+
 	ctx := context.Background()
 	buf := bytes.Buffer{}
 	out := output.Buffer(&buf)

example/pkg/command/hello.go

@@ -25,7 +25,7 @@ func Hello() *console.Command {
 		},
 		Configure: func(_ context.Context, def *input.Definition) error {
 			def.SetArguments(
-				argument.New("name", "Same name", argument.Default("World")),
+				argument.String("name", "Same name", argument.Default("World")),
 			)
 
 			return nil

example/pkg/command/long.go

@@ -6,9 +6,9 @@ import (
 
 	"gitoa.ru/go-4devs/console"
 	"gitoa.ru/go-4devs/console/input"
+	"gitoa.ru/go-4devs/console/input/flag"
 	"gitoa.ru/go-4devs/console/input/option"
 	"gitoa.ru/go-4devs/console/input/validator"
-	"gitoa.ru/go-4devs/console/input/value/flag"
 	"gitoa.ru/go-4devs/console/output"
 )
 
@@ -41,7 +41,7 @@ func Long() *console.Command {
 		Configure: func(ctx context.Context, def *input.Definition) error {
 			def.SetOptions(option.Duration("timeout", "set duration run command",
 				option.Default(defaultTimeout),
-				option.Short("t"),
+				option.Short('t'),
 				option.Valid(validator.NotBlank(flag.Duration)),
 			))
 

go.mod

@@ -1,3 +1,9 @@
 module gitoa.ru/go-4devs/console
 
 go 1.15
+
+require (
+	github.com/kr/pretty v0.1.0 // indirect
+	github.com/stretchr/testify v1.8.0
+	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
+)

go.sum

@@ -0,0 +1,21 @@
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
+github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
+github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
+gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

help.go

@@ -8,9 +8,10 @@ import (
 
 	"gitoa.ru/go-4devs/console/input"
 	"gitoa.ru/go-4devs/console/input/argument"
+	"gitoa.ru/go-4devs/console/input/flag"
 	"gitoa.ru/go-4devs/console/input/option"
 	"gitoa.ru/go-4devs/console/input/validator"
-	"gitoa.ru/go-4devs/console/input/value/flag"
+	"gitoa.ru/go-4devs/console/input/value"
 	"gitoa.ru/go-4devs/console/output"
 	"gitoa.ru/go-4devs/console/output/descriptor"
 )
@@ -43,18 +44,18 @@ To display the list of available commands, please use the <info>list</info> comm
 
 			des, err := descriptor.Find(format)
 			if err != nil {
-				return err
+				return fmt.Errorf("find descriptor: %w", err)
 			}
 
 			cmd, err := Find(name)
 			if err != nil {
-				return err
+				return fmt.Errorf("find cmd: %w", err)
 			}
 
 			def := input.NewDefinition()
 
 			if err := cmd.Init(ctx, Default(def)); err != nil {
-				return err
+				return fmt.Errorf("init cmd: %w", err)
 			}
 
 			var bin string
@@ -62,22 +63,28 @@ To display the list of available commands, please use the <info>list</info> comm
 				bin = os.Args[0]
 			}
 
-			return des.Command(ctx, out, descriptor.Command{
+			derr := des.Command(ctx, out, descriptor.Command{
 				Bin:         bin,
 				Name:        cmd.Name,
 				Description: cmd.Description,
 				Help:        cmd.Help,
 				Definition:  def,
 			})
+
+			if derr != nil {
+				return fmt.Errorf("descriptor help:%w", derr)
+			}
+
+			return nil
 		},
 		Configure: func(ctx context.Context, config *input.Definition) error {
 			formats := descriptor.Descriptors()
 			config.
 				SetArguments(
-					argument.New(HelpArgumentCommandName, "The command name", argument.Default("help")),
+					argument.String(HelpArgumentCommandName, "The command name", argument.Default(value.New("help"))),
 				).
 				SetOptions(
-					option.New(helpOptFormat, fmt.Sprintf("The output format (%s)", strings.Join(formats, ", ")),
+					option.String(helpOptFormat, fmt.Sprintf("The output format (%s)", strings.Join(formats, ", ")),
 						option.Required,
 						option.Default(formats[0]),
 						option.Valid(

input/argument/argument.go

@@ -1,54 +1,58 @@
 package argument
 
 import (
-	"gitoa.ru/go-4devs/console/input/errs"
 	"gitoa.ru/go-4devs/console/input/value"
-	"gitoa.ru/go-4devs/console/input/value/flag"
+	"gitoa.ru/go-4devs/console/input/variable"
 )
 
-func New(name, description string, opts ...func(*Argument)) Argument {
-	a := Argument{
-		Name:        name,
-		Description: description,
+func Default(in interface{}) variable.Option {
+	return variable.Default(value.New(in))
 }
 
-	for _, opt := range opts {
-		opt(&a)
+func Required(v *variable.Variable) {
+	variable.Required(v)
 }
 
-	return a
+func Array(v *variable.Variable) {
+	variable.Array(v)
 }
 
-type Argument struct {
-	Name        string
-	Description string
-	Default     value.Value
-	Flag        flag.Flag
-	Valid       []func(value.Value) error
+func String(name, description string, opts ...variable.Option) variable.Variable {
+	return variable.String(name, description, append(opts, variable.ArgArgument)...)
 }
 
-func (a Argument) HasDefault() bool {
-	return a.Default != nil
+func Bool(name, description string, opts ...variable.Option) variable.Variable {
+	return variable.Bool(name, description, append(opts, variable.ArgArgument)...)
 }
 
-func (a Argument) IsBool() bool {
-	return a.Flag.IsBool()
+func Duration(name, description string, opts ...variable.Option) variable.Variable {
+	return variable.Duration(name, description, append(opts, variable.ArgArgument)...)
 }
 
-func (a Argument) IsRequired() bool {
-	return a.Flag.IsRequired()
+func Float64(name, description string, opts ...variable.Option) variable.Variable {
+	return variable.Float64(name, description, append(opts, variable.ArgArgument)...)
 }
 
-func (a Argument) IsArray() bool {
-	return a.Flag.IsArray()
+func Int(name, description string, opts ...variable.Option) variable.Variable {
+	return variable.Int(name, description, append(opts, variable.ArgArgument)...)
 }
 
-func (a Argument) Validate(v value.Value) error {
-	for _, valid := range a.Valid {
-		if err := valid(v); err != nil {
-			return errs.Argument(a.Name, err)
+func Int64(name, description string, opts ...variable.Option) variable.Variable {
+	return variable.Int64(name, description, append(opts, variable.ArgArgument)...)
 }
+
+func Time(name, description string, opts ...variable.Option) variable.Variable {
+	return variable.Time(name, description, append(opts, variable.ArgArgument)...)
+}
+
+func Uint(name, description string, opts ...variable.Option) variable.Variable {
+	return variable.Uint(name, description, append(opts, variable.ArgArgument)...)
+}
+
+func Uint64(name, descriontion string, opts ...variable.Option) variable.Variable {
+	return variable.Uint64(name, descriontion, append(opts, variable.ArgArgument)...)
 }
 
-	return nil
+func Err(name string, err error) variable.Error {
+	return variable.Err(name, variable.TypeArgument, err)
 }

input/argument/option.go

@@ -1,26 +0,0 @@
-package argument
-
-import (
-	"gitoa.ru/go-4devs/console/input/value"
-	"gitoa.ru/go-4devs/console/input/value/flag"
-)
-
-func Required(a *Argument) {
-	a.Flag |= flag.Required
-}
-
-func Default(v interface{}) func(*Argument) {
-	return func(a *Argument) {
-		a.Default = value.New(v)
-	}
-}
-
-func Flag(flag flag.Flag) func(*Argument) {
-	return func(a *Argument) {
-		a.Flag = flag
-	}
-}
-
-func Array(a *Argument) {
-	a.Flag |= flag.Array
-}

input/argv.go

@@ -3,20 +3,41 @@ package input
 import (
 	"context"
 	"fmt"
+	"os"
 	"strings"
 
+	"gitoa.ru/go-4devs/console/input/argument"
 	"gitoa.ru/go-4devs/console/input/errs"
 	"gitoa.ru/go-4devs/console/input/option"
+	"gitoa.ru/go-4devs/console/input/variable"
 )
 
 const doubleDash = `--`
 
+func NewArgs(skip int) *Argv {
+	res := 2
+
+	switch {
+	case skip > 0 && len(os.Args) > skip:
+		res = skip
+	case skip > 0:
+		res = len(os.Args)
+	case len(os.Args) == 1:
+		res = 1
+	case len(os.Args) > 1 && os.Args[1][0] == '-':
+		res = 1
+	}
+
+	return &Argv{Args: os.Args[res:]}
+}
+
 type Argv struct {
 	Array
 	Args      []string
 	ErrHandle func(error) error
 }
 
+//nolint:cyclop
 func (i *Argv) Bind(ctx context.Context, def *Definition) error {
 	options := true
 
@@ -64,13 +85,13 @@ func (i *Argv) parseLongOption(arg string, def *Definition) error {
 
 	opt, err := def.Option(name)
 	if err != nil {
-		return errs.Option(name, err)
+		return option.Err(name, err)
 	}
 
 	return i.appendOption(name, value, opt)
 }
 
-func (i *Argv) appendOption(name string, data *string, opt option.Option) error {
+func (i *Argv) appendOption(name string, data *string, opt variable.Variable) error {
 	if i.HasOption(name) && !opt.IsArray() {
 		return fmt.Errorf("%w: got: array, expect: %s", errs.ErrUnexpectedType, opt.Flag.Type())
 	}
@@ -86,11 +107,11 @@ func (i *Argv) appendOption(name string, data *string, opt option.Option) error
 		val = i.Args[0]
 		i.Args = i.Args[1:]
 	default:
-		return errs.Option(name, errs.ErrRequired)
+		return option.Err(name, errs.ErrRequired)
 	}
 
-	if err := i.AppendOption(opt.Flag, name, val); err != nil {
-		return errs.Option(name, err)
+	if err := i.AppendOption(opt, val); err != nil {
+		return option.Err(name, err)
 	}
 
 	return nil
@@ -131,8 +152,8 @@ func (i *Argv) parseArgument(arg string, def *Definition) error {
 		return err
 	}
 
-	if err := i.AppendArgument(opt.Flag, opt.Name, arg); err != nil {
-		return errs.Argument(opt.Name, err)
+	if err := i.AppendArgument(opt, arg); err != nil {
+		return argument.Err(opt.Name, err)
 	}
 
 	return nil

input/array.go

@@ -3,7 +3,9 @@ package input
 import (
 	"context"
 
+	"gitoa.ru/go-4devs/console/input/argument"
 	"gitoa.ru/go-4devs/console/input/errs"
+	"gitoa.ru/go-4devs/console/input/option"
 	"gitoa.ru/go-4devs/console/input/value"
 )
 
@@ -58,7 +60,7 @@ func (a *Array) bindOption(ctx context.Context, def *Definition) error {
 
 				continue
 			case opt.IsRequired():
-				return errs.Option(name, errs.ErrRequired)
+				return option.Err(name, errs.ErrRequired)
 			default:
 				continue
 			}
@@ -70,7 +72,7 @@ func (a *Array) bindOption(ctx context.Context, def *Definition) error {
 		}
 
 		if err := opt.Validate(v); err != nil {
-			return errs.Option(name, err)
+			return option.Err(name, err)
 		}
 	}
 
@@ -91,7 +93,7 @@ func (a *Array) bindArguments(ctx context.Context, def *Definition) error {
 
 				continue
 			case arg.IsRequired():
-				return errs.Argument(name, errs.ErrRequired)
+				return argument.Err(name, errs.ErrRequired)
 			default:
 				continue
 			}
@@ -99,7 +101,7 @@ func (a *Array) bindArguments(ctx context.Context, def *Definition) error {
 
 		if v := a.Map.Argument(ctx, name); !value.IsEmpty(v) {
 			if err := arg.Validate(v); err != nil {
-				return errs.Argument(name, err)
+				return argument.Err(name, err)
 			}
 		}
 	}

input/chain.go

@@ -2,6 +2,7 @@ package input
 
 import (
 	"context"
+	"fmt"
 
 	"gitoa.ru/go-4devs/console/input/value"
 )
@@ -35,7 +36,7 @@ func (c chain) Argument(ctx context.Context, name string) value.Value {
 func (c chain) Bind(ctx context.Context, def *Definition) error {
 	for _, input := range c {
 		if err := input.Bind(ctx, def); err != nil {
-			return err
+			return fmt.Errorf("%T:%w", input, err)
 		}
 	}
 

input/definition.go

@@ -4,20 +4,21 @@ import (
 	"gitoa.ru/go-4devs/console/input/argument"
 	"gitoa.ru/go-4devs/console/input/errs"
 	"gitoa.ru/go-4devs/console/input/option"
+	"gitoa.ru/go-4devs/console/input/variable"
 )
 
 func NewDefinition() *Definition {
 	return &Definition{
-		options: make(map[string]option.Option),
-		args:    make(map[string]argument.Argument),
+		options: make(map[string]variable.Variable),
+		args:    make(map[string]variable.Variable),
 		short:   make(map[string]string),
 	}
 }
 
 type Definition struct {
-	options map[string]option.Option
+	options map[string]variable.Variable
 	posOpt  []string
-	args    map[string]argument.Argument
+	args    map[string]variable.Variable
 	posArgs []string
 	short   map[string]string
 }
@@ -30,11 +31,11 @@ func (d *Definition) Arguments() []string {
 	return d.posArgs
 }
 
-func (d *Definition) SetOption(name, description string, opts ...func(*option.Option)) *Definition {
-	return d.SetOptions(option.New(name, description, opts...))
+func (d *Definition) SetOption(name, description string, opts ...variable.Option) *Definition {
+	return d.SetOptions(option.String(name, description, opts...))
 }
 
-func (d *Definition) SetOptions(opts ...option.Option) *Definition {
+func (d *Definition) SetOptions(opts ...variable.Variable) *Definition {
 	for _, opt := range opts {
 		if _, has := d.options[opt.Name]; !has {
 			d.posOpt = append([]string{opt.Name}, d.posOpt...)
@@ -42,18 +43,18 @@ func (d *Definition) SetOptions(opts ...option.Option) *Definition {
 
 		d.options[opt.Name] = opt
 		if opt.HasShort() {
-			d.short[opt.Short] = opt.Name
+			d.short[opt.Alias] = opt.Name
 		}
 	}
 
 	return d
 }
 
-func (d *Definition) SetArgument(name, description string, opts ...func(*argument.Argument)) *Definition {
-	return d.SetArguments(argument.New(name, description, opts...))
+func (d *Definition) SetArgument(name, description string, opts ...variable.Option) *Definition {
+	return d.SetArguments(argument.String(name, description, opts...))
 }
 
-func (d *Definition) SetArguments(args ...argument.Argument) *Definition {
+func (d *Definition) SetArguments(args ...variable.Variable) *Definition {
 	for _, arg := range args {
 		if _, ok := d.args[arg.Name]; !ok {
 			d.posArgs = append(d.posArgs, arg.Name)
@@ -65,9 +66,9 @@ func (d *Definition) SetArguments(args ...argument.Argument) *Definition {
 	return d
 }
 
-func (d *Definition) Argument(pos int) (argument.Argument, error) {
+func (d *Definition) Argument(pos int) (variable.Variable, error) {
 	if len(d.posArgs) == 0 {
-		return argument.Argument{}, errs.ErrNoArgs
+		return variable.Variable{}, errs.ErrNoArgs
 	}
 
 	lastPos := len(d.posArgs) - 1
@@ -77,25 +78,25 @@ func (d *Definition) Argument(pos int) (argument.Argument, error) {
 			return arg, nil
 		}
 
-		return argument.Argument{}, errs.ErrToManyArgs
+		return variable.Variable{}, errs.ErrToManyArgs
 	}
 
 	return d.args[d.posArgs[pos]], nil
 }
 
-func (d *Definition) ShortOption(short string) (option.Option, error) {
+func (d *Definition) ShortOption(short string) (variable.Variable, error) {
 	name, ok := d.short[short]
 	if !ok {
-		return option.Option{}, errs.ErrNotFound
+		return variable.Variable{}, errs.ErrNotFound
 	}
 
 	return d.Option(name)
 }
 
-func (d *Definition) Option(name string) (option.Option, error) {
+func (d *Definition) Option(name string) (variable.Variable, error) {
 	if opt, ok := d.options[name]; ok {
 		return opt, nil
 	}
 
-	return option.Option{}, errs.ErrNotFound
+	return variable.Variable{}, errs.ErrNotFound
 }

input/errs/error.go

@@ -2,7 +2,6 @@ package errs
 
 import (
 	"errors"
-	"fmt"
 )
 
 var (
@@ -13,46 +12,5 @@ var (
 	ErrRequired       = errors.New("is required")
 	ErrAppend         = errors.New("failed append")
 	ErrInvalidName    = errors.New("invalid name")
+	ErrWrongType      = errors.New("wrong type")
 )
-
-func New(name, t string, err error) Error {
-	return Error{
-		name: name,
-		t:    t,
-		err:  err,
-	}
-}
-
-type Error struct {
-	name string
-	err  error
-	t    string
-}
-
-func (o Error) Error() string {
-	return fmt.Sprintf("%s: '%s' %s", o.t, o.name, o.err)
-}
-
-func (o Error) Is(err error) bool {
-	return errors.Is(err, o.err)
-}
-
-func (o Error) Unwrap() error {
-	return o.err
-}
-
-func Option(name string, err error) Error {
-	return Error{
-		name: name,
-		err:  err,
-		t:    "option",
-	}
-}
-
-func Argument(name string, err error) Error {
-	return Error{
-		name: name,
-		err:  err,
-		t:    "argument",
-	}
-}

input/value/flag/flag.go → input/flag/flag.go

@@ -71,6 +71,7 @@ func (i Flag) IsAny() bool {
 	return i&Any > 0
 }
 
+//nolint:cyclop
 func (i Flag) Type() Flag {
 	switch {
 	case i.IsInt():

input/map.go

@@ -2,15 +2,16 @@ package input
 
 import (
 	"context"
+	"fmt"
 	"sync"
 
 	"gitoa.ru/go-4devs/console/input/value"
-	"gitoa.ru/go-4devs/console/input/value/flag"
+	"gitoa.ru/go-4devs/console/input/variable"
 )
 
 type Map struct {
-	opts map[string]value.Append
-	args map[string]value.Append
+	opts map[string]value.Value
+	args map[string]value.Value
 	sync.Mutex
 }
 
@@ -42,15 +43,15 @@ func (m *Map) HasOption(name string) bool {
 	return ok
 }
 
-func (m *Map) SetOption(name string, v interface{}) {
+func (m *Map) SetOption(name string, val interface{}) {
 	m.Lock()
 	defer m.Unlock()
 
 	if m.opts == nil {
-		m.opts = make(map[string]value.Append)
+		m.opts = make(map[string]value.Value)
 	}
 
-	m.opts[name] = value.New(v)
+	m.opts[name] = value.New(val)
 }
 
 func (m *Map) HasArgument(name string) bool {
@@ -59,29 +60,59 @@ func (m *Map) HasArgument(name string) bool {
 	return ok
 }
 
-func (m *Map) SetArgument(name string, v interface{}) {
+func (m *Map) SetArgument(name string, val interface{}) {
 	m.Lock()
 	defer m.Unlock()
 
 	if m.args == nil {
-		m.args = make(map[string]value.Append)
+		m.args = make(map[string]value.Value)
 	}
 
-	m.args[name] = value.New(v)
+	m.args[name] = value.New(val)
 }
 
-func (m *Map) AppendOption(f flag.Flag, name, val string) error {
-	if _, ok := m.opts[name]; !ok {
-		m.SetOption(name, value.ByFlag(f))
+func (m *Map) AppendOption(opt variable.Variable, val string) error {
+	old, ok := m.opts[opt.Name]
+	if !ok {
+		value, err := opt.Create(val)
+		if err != nil {
+			return fmt.Errorf("append option:%w", err)
 		}
 
-	return m.opts[name].Append(val)
+		m.SetOption(opt.Name, value)
+
+		return nil
+	}
+
+	value, err := opt.Append(old, val)
+	if err != nil {
+		return fmt.Errorf("append option:%w", err)
+	}
+
+	m.SetOption(opt.Name, value)
+
+	return nil
 }
 
-func (m *Map) AppendArgument(f flag.Flag, name, val string) error {
-	if _, ok := m.args[name]; !ok {
-		m.SetArgument(name, value.ByFlag(f))
+func (m *Map) AppendArgument(arg variable.Variable, val string) error {
+	old, ok := m.args[arg.Name]
+	if !ok {
+		value, err := arg.Create(val)
+		if err != nil {
+			return fmt.Errorf("append option:%w", err)
 		}
 
-	return m.args[name].Append(val)
+		m.SetArgument(arg.Name, value)
+
+		return nil
+	}
+
+	value, err := arg.Append(old, val)
+	if err != nil {
+		return fmt.Errorf("append option:%w", err)
+	}
+
+	m.SetArgument(arg.Name, value)
+
+	return nil
 }

input/option/helpers.go

@@ -1,37 +0,0 @@
-package option
-
-import (
-	"gitoa.ru/go-4devs/console/input/value/flag"
-)
-
-func Bool(name, description string, opts ...func(*Option)) Option {
-	return New(name, description, append(opts, Value(flag.Bool))...)
-}
-
-func Duration(name, description string, opts ...func(*Option)) Option {
-	return New(name, description, append(opts, Value(flag.Duration))...)
-}
-
-func Float64(name, description string, opts ...func(*Option)) Option {
-	return New(name, description, append(opts, Value(flag.Float64))...)
-}
-
-func Int(name, description string, opts ...func(*Option)) Option {
-	return New(name, description, append(opts, Value(flag.Int))...)
-}
-
-func Int64(name, description string, opts ...func(*Option)) Option {
-	return New(name, description, append(opts, Value(flag.Int64))...)
-}
-
-func Time(name, description string, opts ...func(*Option)) Option {
-	return New(name, description, append(opts, Value(flag.Time))...)
-}
-
-func Uint(name, description string, opts ...func(*Option)) Option {
-	return New(name, description, append(opts, Value(flag.Uint))...)
-}
-
-func Uint64(name, descriontion string, opts ...func(*Option)) Option {
-	return New(name, descriontion, append(opts, Value(flag.Uint64))...)
-}

input/option/option.go

@@ -1,97 +1,68 @@
 package option
 
 import (
-	"gitoa.ru/go-4devs/console/input/errs"
 	"gitoa.ru/go-4devs/console/input/value"
-	"gitoa.ru/go-4devs/console/input/value/flag"
+	"gitoa.ru/go-4devs/console/input/variable"
 )
 
-func Required(o *Option) {
-	o.Flag |= flag.Required
-}
-
-func Default(in interface{}) func(*Option) {
-	return func(o *Option) {
-		o.Default = value.New(in)
+func Short(in rune) variable.Option {
+	return func(v *variable.Variable) {
+		v.Alias = string(in)
 	}
 }
 
-func Short(s string) func(*Option) {
-	return func(o *Option) {
-		o.Short = s
-	}
+func Default(in interface{}) variable.Option {
+	return variable.Default(value.New(in))
 }
 
-func Array(o *Option) {
-	o.Flag |= flag.Array
+func Required(v *variable.Variable) {
+	variable.Required(v)
 }
 
-func Value(flag flag.Flag) func(*Option) {
-	return func(o *Option) {
-		o.Flag |= flag
-	}
+func Valid(f ...func(value.Value) error) variable.Option {
+	return variable.Valid(f...)
 }
 
-func Flag(in flag.Flag) func(*Option) {
-	return func(o *Option) {
-		o.Flag = in
-	}
+func Array(v *variable.Variable) {
+	variable.Array(v)
 }
 
-func Valid(f ...func(value.Value) error) func(*Option) {
-	return func(o *Option) {
-		o.Valid = f
-	}
+func String(name, description string, opts ...variable.Option) variable.Variable {
+	return variable.String(name, description, append(opts, variable.ArgOption)...)
 }
 
-func New(name, description string, opts ...func(*Option)) Option {
-	o := Option{
-		Name:        name,
-		Description: description,
+func Bool(name, description string, opts ...variable.Option) variable.Variable {
+	return variable.Bool(name, description, append(opts, variable.ArgOption)...)
 }
 
-	for _, opt := range opts {
-		opt(&o)
+func Duration(name, description string, opts ...variable.Option) variable.Variable {
+	return variable.Duration(name, description, append(opts, variable.ArgOption)...)
 }
 
-	return o
+func Float64(name, description string, opts ...variable.Option) variable.Variable {
+	return variable.Float64(name, description, append(opts, variable.ArgOption)...)
 }
 
-type Option struct {
-	Name        string
-	Description string
-	Short       string
-	Flag        flag.Flag
-	Default     value.Value
-	Valid       []func(value.Value) error
+func Int(name, description string, opts ...variable.Option) variable.Variable {
+	return variable.Int(name, description, append(opts, variable.ArgOption)...)
 }
 
-func (o Option) HasShort() bool {
-	return len(o.Short) == 1
+func Int64(name, description string, opts ...variable.Option) variable.Variable {
+	return variable.Int64(name, description, append(opts, variable.ArgOption)...)
 }
 
-func (o Option) HasDefault() bool {
-	return o.Default != nil
+func Time(name, description string, opts ...variable.Option) variable.Variable {
+	return variable.Time(name, description, append(opts, variable.ArgOption)...)
 }
 
-func (o Option) IsBool() bool {
-	return o.Flag.IsBool()
+func Uint(name, description string, opts ...variable.Option) variable.Variable {
+	return variable.Uint(name, description, append(opts, variable.ArgOption)...)
 }
 
-func (o Option) IsArray() bool {
-	return o.Flag.IsArray()
-}
-
-func (o Option) IsRequired() bool {
-	return o.Flag.IsRequired()
-}
-
-func (o Option) Validate(v value.Value) error {
-	for _, valid := range o.Valid {
-		if err := valid(v); err != nil {
-			return errs.Option(o.Name, err)
-		}
+func Uint64(name, descriontion string, opts ...variable.Option) variable.Variable {
+	return variable.Uint64(name, descriontion, append(opts, variable.ArgOption)...)
 }
 
-	return nil
+func Err(name string, err error) variable.Error {
+	return variable.Err(name, variable.TypeOption, err)
 }

input/validator/enum.go

@@ -4,13 +4,13 @@ import "gitoa.ru/go-4devs/console/input/value"
 
 func Enum(enum ...string) func(value.Value) error {
 	return func(in value.Value) error {
-		v := in.String()
+		val := in.String()
 		for _, e := range enum {
-			if e == v {
+			if e == val {
 				return nil
 			}
 		}
 
-		return NewError(ErrInvalid, v, enum)
+		return NewError(ErrInvalid, val, enum)
 	}
 }

input/validator/enum_test.go

@@ -9,6 +9,8 @@ import (
 )
 
 func TestEnum(t *testing.T) {
+	t.Parallel()
+
 	validValue := value.New("valid")
 	invalidValue := value.New("invalid")
 

input/validator/not_blank.go

@@ -1,33 +1,33 @@
 package validator
 
 import (
+	"gitoa.ru/go-4devs/console/input/flag"
 	"gitoa.ru/go-4devs/console/input/value"
-	"gitoa.ru/go-4devs/console/input/value/flag"
 )
 
-//nolint: gocyclo
-func NotBlank(f flag.Flag) func(value.Value) error {
+//nolint:gocyclo,cyclop
+func NotBlank(fl flag.Flag) func(value.Value) error {
 	return func(in value.Value) error {
 		switch {
-		case f.IsAny() && in.Any() != nil:
+		case fl.IsAny() && in.Any() != nil:
 			return nil
-		case f.IsArray():
-			return arrayNotBlank(f, in)
-		case f.IsInt() && in.Int() != 0:
+		case fl.IsArray():
+			return arrayNotBlank(fl, in)
+		case fl.IsInt() && in.Int() != 0:
 			return nil
-		case f.IsInt64() && in.Int64() != 0:
+		case fl.IsInt64() && in.Int64() != 0:
 			return nil
-		case f.IsUint() && in.Uint() != 0:
+		case fl.IsUint() && in.Uint() != 0:
 			return nil
-		case f.IsUint64() && in.Uint64() != 0:
+		case fl.IsUint64() && in.Uint64() != 0:
 			return nil
-		case f.IsFloat64() && in.Float64() != 0:
+		case fl.IsFloat64() && in.Float64() != 0:
 			return nil
-		case f.IsDuration() && in.Duration() != 0:
+		case fl.IsDuration() && in.Duration() != 0:
 			return nil
-		case f.IsTime() && !in.Time().IsZero():
+		case fl.IsTime() && !in.Time().IsZero():
 			return nil
-		case f.IsString() && len(in.String()) > 0:
+		case fl.IsString() && len(in.String()) > 0:
 			return nil
 		}
 
@@ -35,10 +35,10 @@ func NotBlank(f flag.Flag) func(value.Value) error {
 	}
 }
 
-//nolint: gocyclo,gocognit
-func arrayNotBlank(f flag.Flag, in value.Value) error {
+//nolint:gocyclo,gocognit,cyclop
+func arrayNotBlank(fl flag.Flag, in value.Value) error {
 	switch {
-	case f.IsInt() && len(in.Ints()) > 0:
+	case fl.IsInt() && len(in.Ints()) > 0:
 		for _, i := range in.Ints() {
 			if i == 0 {
 				return ErrNotBlank
@@ -46,7 +46,7 @@ func arrayNotBlank(f flag.Flag, in value.Value) error {
 		}
 
 		return nil
-	case f.IsInt64() && len(in.Int64s()) > 0:
+	case fl.IsInt64() && len(in.Int64s()) > 0:
 		for _, i := range in.Int64s() {
 			if i == 0 {
 				return ErrNotBlank
@@ -54,7 +54,7 @@ func arrayNotBlank(f flag.Flag, in value.Value) error {
 		}
 
 		return nil
-	case f.IsUint() && len(in.Uints()) > 0:
+	case fl.IsUint() && len(in.Uints()) > 0:
 		for _, u := range in.Uints() {
 			if u == 0 {
 				return ErrNotBlank
@@ -62,7 +62,7 @@ func arrayNotBlank(f flag.Flag, in value.Value) error {
 		}
 
 		return nil
-	case f.IsUint64() && len(in.Uint64s()) > 0:
+	case fl.IsUint64() && len(in.Uint64s()) > 0:
 		for _, u := range in.Uint64s() {
 			if u == 0 {
 				return ErrNotBlank
@@ -70,7 +70,7 @@ func arrayNotBlank(f flag.Flag, in value.Value) error {
 		}
 
 		return nil
-	case f.IsFloat64() && len(in.Float64s()) > 0:
+	case fl.IsFloat64() && len(in.Float64s()) > 0:
 		for _, f := range in.Float64s() {
 			if f == 0 {
 				return ErrNotBlank
@@ -78,9 +78,9 @@ func arrayNotBlank(f flag.Flag, in value.Value) error {
 		}
 
 		return nil
-	case f.IsBool() && len(in.Bools()) > 0:
+	case fl.IsBool() && len(in.Bools()) > 0:
 		return nil
-	case f.IsDuration() && len(in.Durations()) > 0:
+	case fl.IsDuration() && len(in.Durations()) > 0:
 		for _, d := range in.Durations() {
 			if d == 0 {
 				return ErrNotBlank
@@ -88,7 +88,7 @@ func arrayNotBlank(f flag.Flag, in value.Value) error {
 		}
 
 		return nil
-	case f.IsTime() && len(in.Times()) > 0:
+	case fl.IsTime() && len(in.Times()) > 0:
 		for _, t := range in.Times() {
 			if t.IsZero() {
 				return ErrNotBlank
@@ -96,7 +96,7 @@ func arrayNotBlank(f flag.Flag, in value.Value) error {
 		}
 
 		return nil
-	case f.IsString() && len(in.Strings()) > 0:
+	case fl.IsString() && len(in.Strings()) > 0:
 		for _, st := range in.Strings() {
 			if len(st) == 0 {
 				return ErrNotBlank

input/validator/not_blank_test.go

@@ -5,12 +5,14 @@ import (
 	"testing"
 	"time"
 
+	"gitoa.ru/go-4devs/console/input/flag"
 	"gitoa.ru/go-4devs/console/input/validator"
 	"gitoa.ru/go-4devs/console/input/value"
-	"gitoa.ru/go-4devs/console/input/value/flag"
 )
 
 func TestNotBlank(t *testing.T) {
+	t.Parallel()
+
 	cases := map[string]struct {
 		flag  flag.Flag
 		value value.Value
@@ -103,7 +105,7 @@ func TestNotBlank(t *testing.T) {
 		}
 
 		if err := valid(ca.empty); err == nil || !errors.Is(err, validator.ErrNotBlank) {
-			t.Errorf("case: %s, expect: %s, got:%s", name, validator.ErrNotBlank, err)
+			t.Errorf("case empty: %s, expect: %s, got:%s", name, validator.ErrNotBlank, err)
 		}
 	}
 }

input/validator/valid_test.go

@@ -4,12 +4,14 @@ import (
 	"errors"
 	"testing"
 
+	"gitoa.ru/go-4devs/console/input/flag"
 	"gitoa.ru/go-4devs/console/input/validator"
 	"gitoa.ru/go-4devs/console/input/value"
-	"gitoa.ru/go-4devs/console/input/value/flag"
 )
 
 func TestValid(t *testing.T) {
+	t.Parallel()
+
 	validValue := value.New("one")
 	invalidValue := value.New([]string{"one"})
 

input/value/any.go

@@ -1,21 +1,137 @@
 package value
 
-import "gitoa.ru/go-4devs/console/input/value/flag"
+import (
+	"encoding/json"
+	"fmt"
+	"time"
+)
+
+var _ Value = NewAny(nil)
+
+//nolint:gochecknoglobals
+var (
+	emptyValue = NewAny(nil)
+)
+
+func Empty() Value {
+	return emptyValue
+}
+
+func IsEmpty(v Value) bool {
+	return v == nil || v == emptyValue
+}
+
+func NewAny(in interface{}) Value {
+	return Read{Any{v: in}}
+}
 
 type Any struct {
-	empty
-	Val  []interface{}
-	Flag flag.Flag
+	v interface{}
+}
+
+func (a Any) Any() interface{} {
+	return a.v
 }
 
-func (a *Any) Any() interface{} {
-	if a.Flag.IsArray() {
-		return a.Val
+func (a Any) Unmarshal(val interface{}) error {
+	out, err := a.ParseString()
+	if err != nil {
+		return fmt.Errorf("any parse string:%w", err)
 	}
 
-	if len(a.Val) > 0 {
-		return a.Val[0]
+	uerr := json.Unmarshal([]byte(out), val)
+	if uerr != nil {
+		return fmt.Errorf("any unmarshal: %w", uerr)
 	}
 
 	return nil
 }
+
+func (a Any) ParseString() (string, error) {
+	if a.v == nil {
+		return "", nil
+	}
+
+	bout, err := json.Marshal(a.v)
+	if err != nil {
+		return "", fmt.Errorf("any string:%w", err)
+	}
+
+	return string(bout), err
+}
+
+func (a Any) ParseInt() (int, error) {
+	out, ok := a.v.(int)
+	if !ok {
+		return 0, a.wrongType("int")
+	}
+
+	return out, nil
+}
+
+func (a Any) ParseInt64() (int64, error) {
+	out, ok := a.v.(int64)
+	if !ok {
+		return 0, a.wrongType("int64")
+	}
+
+	return out, nil
+}
+
+func (a Any) ParseUint() (uint, error) {
+	out, ok := a.v.(uint)
+	if !ok {
+		return 0, a.wrongType("uint")
+	}
+
+	return out, nil
+}
+
+func (a Any) ParseUint64() (uint64, error) {
+	out, ok := a.v.(uint64)
+	if !ok {
+		return 0, a.wrongType("uint64")
+	}
+
+	return out, nil
+}
+
+func (a Any) ParseFloat64() (float64, error) {
+	out, ok := a.v.(float64)
+	if !ok {
+		return 0, a.wrongType("float64")
+	}
+
+	return out, nil
+}
+
+func (a Any) ParseBool() (bool, error) {
+	out, ok := a.v.(bool)
+	if !ok {
+		return false, a.wrongType("bool")
+	}
+
+	return out, nil
+}
+
+func (a Any) ParseDuration() (time.Duration, error) {
+	out, ok := a.v.(time.Duration)
+	if !ok {
+		return 0, a.wrongType("time.Duration")
+	}
+
+	return out, nil
+}
+
+func (a Any) ParseTime() (time.Time, error) {
+	out, ok := a.v.(time.Time)
+	if !ok {
+		return time.Time{}, a.wrongType("time.Time")
+	}
+
+	return out, nil
+}
+
+func (a Any) wrongType(ex String) error {
+	return fmt.Errorf("%w any: got: %T expect: %s", ErrWrongType, a.v, ex)
+}

input/value/bool.go

@@ -1,44 +1,148 @@
 package value
 
 import (
-	"strconv"
+	"fmt"
+	"time"
+)
 
-	"gitoa.ru/go-4devs/console/input/value/flag"
+var (
+	_ ParseValue = Bool(false)
+	_ SliceValue = Bools{}
 )
 
-type Bool struct {
-	empty
-	Val  []bool
-	Flag flag.Flag
+func NewBools(in []bool) Slice {
+	return Slice{SliceValue: Bools(in)}
+}
+
+type Bools []bool
+
+func (b Bools) Any() interface{} {
+	return b.Bools()
+}
+
+func (b Bools) Unmarshal(val interface{}) error {
+	v, ok := val.(*[]bool)
+	if !ok {
+		return fmt.Errorf("%w: expect: *[]bool got: %T", ErrWrongType, val)
 	}
 
-func (b *Bool) Append(in string) error {
-	v, err := strconv.ParseBool(in)
-	if err != nil {
-		return err
+	*v = b
+
+	return nil
 }
 
-	b.Val = append(b.Val, v)
+func (b Bools) Strings() []string {
+	return nil
+}
 
+func (b Bools) Ints() []int {
 	return nil
 }
 
-func (b *Bool) Bool() bool {
-	if !b.Flag.IsArray() && len(b.Val) == 1 {
-		return b.Val[0]
+func (b Bools) Int64s() []int64 {
+	return nil
 }
 
-	return false
+func (b Bools) Uints() []uint {
+	return nil
 }
 
-func (b *Bool) Bools() []bool {
-	return b.Val
+func (b Bools) Uint64s() []uint64 {
+	return nil
 }
 
-func (b *Bool) Any() interface{} {
-	if b.Flag.IsArray() {
-		return b.Bools()
+func (b Bools) Float64s() []float64 {
+	return nil
+}
+
+func (b Bools) Bools() []bool {
+	out := make([]bool, len(b))
+	copy(out, b)
+
+	return out
+}
+
+func (b Bools) Durations() []time.Duration {
+	return nil
+}
+
+func (b Bools) Times() []time.Time {
+	return nil
+}
+
+func NewBool(in bool) Read {
+	return Read{ParseValue: Bool(in)}
+}
+
+type Bool bool
+
+func (b Bool) Unmarshal(val interface{}) error {
+	v, ok := val.(*bool)
+	if !ok {
+		return fmt.Errorf("%w: expect: *bool got: %T", ErrWrongType, val)
+	}
+
+	*v = bool(b)
+
+	return nil
+}
+
+func (b Bool) ParseString() (string, error) {
+	return fmt.Sprintf("%v", b), nil
+}
+
+func (b Bool) ParseInt() (int, error) {
+	if b {
+		return 1, nil
+	}
+
+	return 0, nil
+}
+
+func (b Bool) ParseInt64() (int64, error) {
+	if b {
+		return 1, nil
+	}
+
+	return 0, nil
+}
+
+func (b Bool) ParseUint() (uint, error) {
+	if b {
+		return 1, nil
+	}
+
+	return 0, nil
+}
+
+func (b Bool) ParseUint64() (uint64, error) {
+	if b {
+		return 1, nil
+	}
+
+	return 0, nil
+}
+
+func (b Bool) ParseFloat64() (float64, error) {
+	if b {
+		return 1, nil
+	}
+
+	return 0, nil
+}
+
+func (b Bool) ParseBool() (bool, error) {
+	return bool(b), nil
+}
+
+func (b Bool) ParseDuration() (time.Duration, error) {
+	return 0, fmt.Errorf("bool to duration:%w", ErrWrongType)
+}
+
+func (b Bool) ParseTime() (time.Time, error) {
+	return time.Time{}, fmt.Errorf("bool to time:%w", ErrWrongType)
 }
 
-	return b.Bool()
+func (b Bool) Any() interface{} {
+	return bool(b)
 }

input/value/duration.go

@@ -1,44 +1,128 @@
 package value
 
 import (
+	"fmt"
 	"time"
+)
 
-	"gitoa.ru/go-4devs/console/input/value/flag"
+var (
+	_ ParseValue = Duration(0)
+	_ SliceValue = Durations{}
 )
 
-type Duration struct {
-	empty
-	Val  []time.Duration
-	Flag flag.Flag
+func NewDurations(in []time.Duration) Slice {
+	return Slice{SliceValue: Durations(in)}
 }
 
-func (d *Duration) Append(in string) error {
-	v, err := time.ParseDuration(in)
-	if err != nil {
-		return err
+type Durations []time.Duration
+
+func (d Durations) Unmarshal(val interface{}) error {
+	v, ok := val.(*[]time.Duration)
+	if !ok {
+		return fmt.Errorf("%w: expect: *[]time.Duration got: %T", ErrWrongType, val)
 	}
 
-	d.Val = append(d.Val, v)
+	*v = d
 
 	return nil
 }
 
-func (d *Duration) Duration() time.Duration {
-	if !d.Flag.IsArray() && len(d.Val) == 1 {
-		return d.Val[0]
+func (d Durations) Any() interface{} {
+	return d.Durations()
 }
 
-	return 0
+func (d Durations) Strings() []string {
+	return nil
 }
 
-func (d *Duration) Durations() []time.Duration {
-	return d.Val
+func (d Durations) Ints() []int {
+	return nil
 }
 
-func (d *Duration) Any() interface{} {
-	if d.Flag.IsArray() {
-		return d.Durations()
+func (d Durations) Int64s() []int64 {
+	return nil
+}
+
+func (d Durations) Uints() []uint {
+	return nil
+}
+
+func (d Durations) Uint64s() []uint64 {
+	return nil
+}
+
+func (d Durations) Float64s() []float64 {
+	return nil
+}
+
+func (d Durations) Bools() []bool {
+	return nil
+}
+
+func (d Durations) Durations() []time.Duration {
+	out := make([]time.Duration, len(d))
+	copy(out, d)
+
+	return out
+}
+
+func (d Durations) Times() []time.Time {
+	return nil
+}
+
+func NewDuration(in time.Duration) Read {
+	return Read{ParseValue: Duration(in)}
+}
+
+type Duration time.Duration
+
+func (d Duration) ParseDuration() (time.Duration, error) {
+	return time.Duration(d), nil
+}
+
+func (d Duration) ParseString() (string, error) {
+	return time.Duration(d).String(), nil
+}
+
+func (d Duration) ParseInt() (int, error) {
+	return int(d), nil
+}
+
+func (d Duration) ParseInt64() (int64, error) {
+	return int64(d), nil
+}
+
+func (d Duration) ParseUint() (uint, error) {
+	return uint(d), nil
+}
+
+func (d Duration) ParseUint64() (uint64, error) {
+	return uint64(d), nil
+}
+
+func (d Duration) ParseFloat64() (float64, error) {
+	return float64(d), nil
+}
+
+func (d Duration) ParseBool() (bool, error) {
+	return false, fmt.Errorf("duration:%w", ErrWrongType)
+}
+
+func (d Duration) ParseTime() (time.Time, error) {
+	return time.Time{}, fmt.Errorf("duration:%w", ErrWrongType)
+}
+
+func (d Duration) Unmarshal(val interface{}) error {
+	v, ok := val.(*time.Duration)
+	if !ok {
+		return fmt.Errorf("%w: expect: *[]time.Duration got: %T", ErrWrongType, val)
+	}
+
+	*v = time.Duration(d)
+
+	return nil
 }
 
-	return d.Duration()
+func (d Duration) Any() interface{} {
+	return time.Duration(d)
 }

input/value/empty.go

@@ -1,100 +0,0 @@
-package value
-
-import (
-	"time"
-)
-
-// nolint: gochecknoglobals
-var (
-	emptyValue = &empty{}
-)
-
-func Empty() Value {
-	return emptyValue
-}
-
-func IsEmpty(v Value) bool {
-	return v == nil || v == emptyValue
-}
-
-type empty struct{}
-
-func (e *empty) Append(string) error {
-	return ErrAppendEmpty
-}
-
-func (e *empty) String() string {
-	return ""
-}
-
-func (e *empty) Int() int {
-	return 0
-}
-
-func (e *empty) Int64() int64 {
-	return 0
-}
-
-func (e *empty) Uint() uint {
-	return 0
-}
-
-func (e *empty) Uint64() uint64 {
-	return 0
-}
-
-func (e *empty) Float64() float64 {
-	return 0
-}
-
-func (e *empty) Bool() bool {
-	return false
-}
-
-func (e *empty) Duration() time.Duration {
-	return 0
-}
-
-func (e *empty) Time() time.Time {
-	return time.Time{}
-}
-
-func (e *empty) Strings() []string {
-	return nil
-}
-
-func (e *empty) Ints() []int {
-	return nil
-}
-
-func (e *empty) Int64s() []int64 {
-	return nil
-}
-
-func (e *empty) Uints() []uint {
-	return nil
-}
-
-func (e *empty) Uint64s() []uint64 {
-	return nil
-}
-
-func (e *empty) Float64s() []float64 {
-	return nil
-}
-
-func (e *empty) Bools() []bool {
-	return nil
-}
-
-func (e *empty) Durations() []time.Duration {
-	return nil
-}
-
-func (e *empty) Times() []time.Time {
-	return nil
-}
-
-func (e *empty) Any() interface{} {
-	return nil
-}

input/value/float64.go

@@ -1,44 +1,128 @@
 package value
 
 import (
-	"strconv"
+	"fmt"
+	"time"
+)
 
-	"gitoa.ru/go-4devs/console/input/value/flag"
+var (
+	_ ParseValue = Float64(0)
+	_ SliceValue = Float64s{}
 )
 
-type Float64 struct {
-	empty
-	Val  []float64
-	Flag flag.Flag
+func NewFloat64s(in []float64) Slice {
+	return Slice{SliceValue: Float64s(in)}
 }
 
-func (f *Float64) Append(in string) error {
-	v, err := strconv.ParseFloat(in, 64)
-	if err != nil {
-		return err
+type Float64s []float64
+
+func (f Float64s) Any() interface{} {
+	return f.Float64s()
 }
 
-	f.Val = append(f.Val, v)
+func (f Float64s) Unmarshal(val interface{}) error {
+	v, ok := val.(*[]float64)
+	if !ok {
+		return fmt.Errorf("%w: expect *[]float64", ErrWrongType)
+	}
+
+	*v = f
 
 	return nil
 }
 
-func (f *Float64) Float64() float64 {
-	if !f.Flag.IsArray() && len(f.Val) == 1 {
-		return f.Val[0]
+func (f Float64s) Strings() []string {
+	return nil
 }
 
-	return 0
+func (f Float64s) Ints() []int {
+	return nil
 }
 
-func (f *Float64) Float64s() []float64 {
-	return f.Val
+func (f Float64s) Int64s() []int64 {
+	return nil
 }
 
-func (f *Float64) Any() interface{} {
-	if f.Flag.IsArray() {
-		return f.Float64s()
+func (f Float64s) Uints() []uint {
+	return nil
+}
+
+func (f Float64s) Uint64s() []uint64 {
+	return nil
+}
+
+func (f Float64s) Float64s() []float64 {
+	out := make([]float64, len(f))
+	copy(out, f)
+
+	return out
+}
+
+func (f Float64s) Bools() []bool {
+	return nil
+}
+
+func (f Float64s) Durations() []time.Duration {
+	return nil
+}
+
+func (f Float64s) Times() []time.Time {
+	return nil
+}
+
+func NewFloat64(in float64) Read {
+	return Read{ParseValue: Float64(in)}
+}
+
+type Float64 float64
+
+func (f Float64) Any() interface{} {
+	return float64(f)
+}
+
+func (f Float64) ParseString() (string, error) {
+	return fmt.Sprint(float64(f)), nil
+}
+
+func (f Float64) ParseInt() (int, error) {
+	return int(f), nil
+}
+
+func (f Float64) ParseInt64() (int64, error) {
+	return int64(f), nil
+}
+
+func (f Float64) ParseUint() (uint, error) {
+	return uint(f), nil
+}
+
+func (f Float64) ParseUint64() (uint64, error) {
+	return uint64(f), nil
+}
+
+func (f Float64) ParseFloat64() (float64, error) {
+	return float64(f), nil
+}
+
+func (f Float64) ParseBool() (bool, error) {
+	return false, fmt.Errorf("float64:%w", ErrWrongType)
+}
+
+func (f Float64) ParseDuration() (time.Duration, error) {
+	return time.Duration(f), nil
 }
 
-	return f.Float64()
+func (f Float64) ParseTime() (time.Time, error) {
+	return time.Unix(0, int64(f*Float64(time.Second))), nil
+}
+
+func (f Float64) Unmarshal(in interface{}) error {
+	v, ok := in.(*float64)
+	if !ok {
+		return fmt.Errorf("%w: expect *float64", ErrWrongType)
+	}
+
+	*v = float64(f)
+
+	return nil
 }

input/value/float64_test.go

@@ -0,0 +1,47 @@
+package value_test
+
+import (
+	"math"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"gitoa.ru/go-4devs/console/input/value"
+)
+
+func TestFloat64_Unmarshal(t *testing.T) {
+	t.Parallel()
+
+	f := value.Float64(math.Pi)
+
+	var out float64
+
+	require.NoError(t, f.Unmarshal(&out))
+	require.Equal(t, math.Pi, out)
+}
+
+func TestFloat64_Any(t *testing.T) {
+	t.Parallel()
+
+	f := value.Float64(math.Pi)
+
+	require.Equal(t, math.Pi, f.Any())
+}
+
+func TestFloat64s_Unmarshal(t *testing.T) {
+	t.Parallel()
+
+	f := value.Float64s{math.Pi, math.Sqrt2}
+
+	var out []float64
+
+	require.NoError(t, f.Unmarshal(&out))
+	require.Equal(t, []float64{math.Pi, math.Sqrt2}, out)
+}
+
+func TestFloat64s_Any(t *testing.T) {
+	t.Parallel()
+
+	f := value.Float64s{math.Pi, math.Sqrt2}
+
+	require.Equal(t, []float64{math.Pi, math.Sqrt2}, f.Any())
+}

input/value/int.go

@@ -1,44 +1,129 @@
 package value
 
 import (
+	"fmt"
 	"strconv"
+	"time"
+)
 
-	"gitoa.ru/go-4devs/console/input/value/flag"
+var (
+	_ ParseValue = Int(0)
+	_ SliceValue = Ints{}
 )
 
-type Int struct {
-	empty
-	Val  []int
-	Flag flag.Flag
+func NewInts(in []int) Slice {
+	return Slice{SliceValue: Ints(in)}
 }
 
-func (i *Int) Append(in string) error {
-	v, err := strconv.Atoi(in)
-	if err != nil {
-		return err
+type Ints []int
+
+func (i Ints) Unmarshal(in interface{}) error {
+	val, ok := in.(*[]int)
+	if !ok {
+		return fmt.Errorf("%w: expect *[]int", ErrWrongType)
 	}
 
-	i.Val = append(i.Val, v)
+	*val = i
 
 	return nil
 }
 
-func (i *Int) Int() int {
-	if !i.Flag.IsArray() && len(i.Val) == 1 {
-		return i.Val[0]
+func (i Ints) Any() interface{} {
+	return i.Ints()
 }
 
-	return 0
+func (i Ints) Strings() []string {
+	return nil
 }
 
-func (i *Int) Ints() []int {
-	return i.Val
+func (i Ints) Ints() []int {
+	out := make([]int, len(i))
+	copy(out, i)
+
+	return out
 }
 
-func (i *Int) Any() interface{} {
-	if i.Flag.IsArray() {
-		return i.Ints()
+func (i Ints) Int64s() []int64 {
+	return nil
+}
+
+func (i Ints) Uints() []uint {
+	return nil
+}
+
+func (i Ints) Uint64s() []uint64 {
+	return nil
+}
+
+func (i Ints) Float64s() []float64 {
+	return nil
+}
+
+func (i Ints) Bools() []bool {
+	return nil
+}
+
+func (i Ints) Durations() []time.Duration {
+	return nil
+}
+
+func (i Ints) Times() []time.Time {
+	return nil
+}
+
+func NewInt(in int) Read {
+	return Read{ParseValue: Int(in)}
+}
+
+type Int int
+
+func (i Int) Unmarshal(in interface{}) error {
+	v, ok := in.(*int)
+	if !ok {
+		return fmt.Errorf("%w: expect *int", ErrWrongType)
+	}
+
+	*v = int(i)
+
+	return nil
+}
+
+func (i Int) ParseString() (string, error) {
+	return strconv.Itoa(int(i)), nil
+}
+
+func (i Int) ParseInt() (int, error) {
+	return int(i), nil
+}
+
+func (i Int) ParseInt64() (int64, error) {
+	return int64(i), nil
+}
+
+func (i Int) ParseUint() (uint, error) {
+	return uint(i), nil
+}
+
+func (i Int) ParseUint64() (uint64, error) {
+	return uint64(i), nil
+}
+
+func (i Int) ParseFloat64() (float64, error) {
+	return float64(i), nil
+}
+
+func (i Int) ParseBool() (bool, error) {
+	return false, fmt.Errorf("int:%w", ErrWrongType)
+}
+
+func (i Int) ParseDuration() (time.Duration, error) {
+	return time.Duration(i), nil
+}
+
+func (i Int) ParseTime() (time.Time, error) {
+	return time.Unix(0, int64(i)), nil
 }
 
-	return i.Int()
+func (i Int) Any() interface{} {
+	return int(i)
 }

input/value/int64.go

@@ -1,44 +1,129 @@
 package value
 
 import (
+	"fmt"
 	"strconv"
+	"time"
+)
 
-	"gitoa.ru/go-4devs/console/input/value/flag"
+var (
+	_ ParseValue = Int64(0)
+	_ SliceValue = Int64s{}
 )
 
-type Int64 struct {
-	empty
-	Val  []int64
-	Flag flag.Flag
+func NewInt64s(in []int64) Slice {
+	return Slice{SliceValue: Int64s(in)}
 }
 
-func (i *Int64) Int64() int64 {
-	if !i.Flag.IsArray() && len(i.Val) == 1 {
-		return i.Val[0]
+type Int64s []int64
+
+func (i Int64s) Any() interface{} {
+	return i.Int64s()
 }
 
-	return 0
+func (i Int64s) Unmarshal(val interface{}) error {
+	v, ok := val.(*[]int64)
+	if !ok {
+		return fmt.Errorf("%w: expect *[]int64", ErrWrongType)
 	}
 
-func (i *Int64) Int64s() []int64 {
-	return i.Val
+	*v = i
+
+	return nil
 }
 
-func (i *Int64) Any() interface{} {
-	if i.Flag.IsArray() {
-		return i.Int64s()
+func (i Int64s) Strings() []string {
+	return nil
+}
+
+func (i Int64s) Ints() []int {
+	return nil
+}
+
+func (i Int64s) Int64s() []int64 {
+	out := make([]int64, len(i))
+	copy(out, i)
+
+	return out
+}
+
+func (i Int64s) Uints() []uint {
+	return nil
+}
+
+func (i Int64s) Uint64s() []uint64 {
+	return nil
+}
+
+func (i Int64s) Float64s() []float64 {
+	return nil
+}
+
+func (i Int64s) Bools() []bool {
+	return nil
+}
+
+func (i Int64s) Durations() []time.Duration {
+	return nil
+}
+
+func (i Int64s) Times() []time.Time {
+	return nil
+}
+
+func NewInt64(in int64) Read {
+	return Read{ParseValue: Int64(in)}
+}
+
+type Int64 int64
+
+func (i Int64) Any() interface{} {
+	return int64(i)
+}
+
+func (i Int64) ParseString() (string, error) {
+	return strconv.FormatInt(int64(i), 10), nil
+}
+
+func (i Int64) ParseInt() (int, error) {
+	return int(i), nil
+}
+
+func (i Int64) ParseInt64() (int64, error) {
+	return int64(i), nil
+}
+
+func (i Int64) ParseUint() (uint, error) {
+	return uint(i), nil
+}
+
+func (i Int64) ParseUint64() (uint64, error) {
+	return uint64(i), nil
+}
+
+func (i Int64) ParseFloat64() (float64, error) {
+	return float64(i), nil
+}
+
+func (i Int64) ParseBool() (bool, error) {
+	return false, fmt.Errorf("int64:%w", ErrWrongType)
+}
+
+func (i Int64) ParseDuration() (time.Duration, error) {
+	return time.Duration(i), nil
 }
 
-	return i.Int64()
+func (i Int64) ParseTime() (time.Time, error) {
+	return time.Unix(0, int64(i)), nil
 }
 
-func (i *Int64) Append(in string) error {
-	v, err := strconv.ParseInt(in, 10, 64)
-	if err != nil {
-		return err
+func (i Int64) Unmarshal(val interface{}) error {
+	v, ok := val.(*int64)
+	if !ok {
+		return fmt.Errorf("%w: expect *int64", ErrWrongType)
 	}
 
-	i.Val = append(i.Val, v)
+	*v = int64(i)
 
 	return nil
 }

input/value/read.go

@@ -1,20 +1,189 @@
 package value
 
 import (
-	"errors"
-)
+	"fmt"
+	"time"
 
-var _ Append = (*Read)(nil)
+	"gitoa.ru/go-4devs/console/input/errs"
+)
 
 var (
-	ErrAppendRead  = errors.New("invalid append data to read value")
-	ErrAppendEmpty = errors.New("invalid apped data to empty value")
+	_ Value = Read{}
+	_ Value = Slice{}
 )
 
+var ErrWrongType = errs.ErrWrongType
+
 type Read struct {
-	Value
+	ParseValue
+}
+
+func (r Read) String() string {
+	sout, _ := r.ParseValue.ParseString()
+
+	return sout
+}
+
+func (r Read) Int() int {
+	iout, _ := r.ParseValue.ParseInt()
+
+	return iout
+}
+
+func (r Read) Int64() int64 {
+	iout, _ := r.ParseValue.ParseInt64()
+
+	return iout
+}
+
+func (r Read) Uint() uint {
+	uout, _ := r.ParseValue.ParseUint()
+
+	return uout
+}
+
+func (r Read) Uint64() uint64 {
+	uout, _ := r.ParseValue.ParseUint64()
+
+	return uout
+}
+
+func (r Read) Float64() float64 {
+	fout, _ := r.ParseValue.ParseFloat64()
+
+	return fout
+}
+
+func (r Read) Bool() bool {
+	bout, _ := r.ParseValue.ParseBool()
+
+	return bout
+}
+
+func (r Read) Duration() time.Duration {
+	dout, _ := r.ParseValue.ParseDuration()
+
+	return dout
+}
+
+func (r Read) Time() time.Time {
+	tout, _ := r.ParseValue.ParseTime()
+
+	return tout
+}
+
+func (r Read) Strings() []string {
+	return []string{r.String()}
+}
+
+func (r Read) Ints() []int {
+	return []int{r.Int()}
+}
+
+func (r Read) Int64s() []int64 {
+	return []int64{r.Int64()}
+}
+
+func (r Read) Uints() []uint {
+	return []uint{r.Uint()}
+}
+
+func (r Read) Uint64s() []uint64 {
+	return []uint64{r.Uint64()}
+}
+
+func (r Read) Float64s() []float64 {
+	return []float64{r.Float64()}
+}
+
+func (r Read) Bools() []bool {
+	return []bool{r.Bool()}
+}
+
+func (r Read) Durations() []time.Duration {
+	return []time.Duration{r.Duration()}
+}
+
+func (r Read) Times() []time.Time {
+	return []time.Time{r.Time()}
+}
+
+type Slice struct {
+	SliceValue
+}
+
+func (s Slice) String() string {
+	return ""
+}
+
+func (s Slice) Int() int {
+	return 0
+}
+
+func (s Slice) Int64() int64 {
+	return 0
+}
+
+func (s Slice) Uint() uint {
+	return 0
+}
+
+func (s Slice) Uint64() uint64 {
+	return 0
+}
+
+func (s Slice) Float64() float64 {
+	return 0
+}
+
+func (s Slice) Bool() bool {
+	return false
+}
+
+func (s Slice) Duration() time.Duration {
+	return 0
+}
+
+func (s Slice) Time() time.Time {
+	return time.Time{}
+}
+
+func (s Slice) wrongType() error {
+	return fmt.Errorf("%w: for %T", ErrWrongType, s.SliceValue)
+}
+
+func (s Slice) ParseString() (string, error) {
+	return "", s.wrongType()
+}
+
+func (s Slice) ParseInt() (int, error) {
+	return 0, s.wrongType()
+}
+
+func (s Slice) ParseInt64() (int64, error) {
+	return 0, s.wrongType()
+}
+
+func (s Slice) ParseUint() (uint, error) {
+	return 0, s.wrongType()
+}
+
+func (s Slice) ParseUint64() (uint64, error) {
+	return 0, s.wrongType()
+}
+
+func (s Slice) ParseFloat64() (float64, error) {
+	return 0, s.wrongType()
+}
+
+func (s Slice) ParseBool() (bool, error) {
+	return false, s.wrongType()
+}
+
+func (s Slice) ParseDuration() (time.Duration, error) {
+	return 0, s.wrongType()
 }
 
-func (r *Read) Append(string) error {
-	return ErrAppendRead
+func (s Slice) ParseTime() (time.Time, error) {
+	return time.Time{}, s.wrongType()
 }

input/value/string.go

@@ -1,39 +1,172 @@
 package value
 
-import "gitoa.ru/go-4devs/console/input/value/flag"
+import (
+	"fmt"
+	"strconv"
+	"time"
+)
 
-type String struct {
-	empty
-	Val  []string
-	Flag flag.Flag
+var (
+	_ ParseValue = (String)("")
+	_ SliceValue = (Strings)(nil)
+)
+
+func NewStrings(in []string) Slice {
+	return Slice{SliceValue: Strings(in)}
 }
 
-func (s *String) Append(in string) error {
-	s.Val = append(s.Val, in)
+type Strings []string
+
+func (s Strings) Unmarshal(in interface{}) error {
+	val, ok := in.(*[]string)
+	if !ok {
+		return fmt.Errorf("%w: expect *[]string", ErrWrongType)
+	}
+
+	*val = s
 
 	return nil
 }
 
-func (s *String) String() string {
-	if s.Flag.IsArray() {
-		return ""
+func (s Strings) Any() interface{} {
+	return s.Strings()
 }
 
-	if len(s.Val) == 1 {
-		return s.Val[0]
+func (s Strings) Strings() []string {
+	out := make([]string, len(s))
+	copy(out, s)
+
+	return out
 }
 
-	return ""
+func (s Strings) Ints() []int {
+	return nil
 }
 
-func (s *String) Strings() []string {
-	return s.Val
+func (s Strings) Int64s() []int64 {
+	return nil
 }
 
-func (s *String) Any() interface{} {
-	if s.Flag.IsArray() {
-		return s.Strings()
+func (s Strings) Uints() []uint {
+	return nil
+}
+
+func (s Strings) Uint64s() []uint64 {
+	return nil
+}
+
+func (s Strings) Float64s() []float64 {
+	return nil
+}
+
+func (s Strings) Bools() []bool {
+	return nil
+}
+
+func (s Strings) Durations() []time.Duration {
+	return nil
+}
+
+func (s Strings) Times() []time.Time {
+	return nil
+}
+
+func NewString(in string) Value {
+	return Read{ParseValue: String(in)}
+}
+
+type String string
+
+func (s String) ParseString() (string, error) {
+	return string(s), nil
+}
+
+func (s String) Unmarshal(in interface{}) error {
+	v, ok := in.(*string)
+	if !ok {
+		return fmt.Errorf("%w: expect *string", ErrWrongType)
+	}
+
+	*v = string(s)
+
+	return nil
+}
+
+func (s String) Any() interface{} {
+	return string(s)
+}
+
+func (s String) ParseInt() (int, error) {
+	v, err := strconv.Atoi(string(s))
+	if err != nil {
+		return 0, fmt.Errorf("string int:%w", err)
+	}
+
+	return v, nil
+}
+
+func (s String) Int64() int64 {
+	out, _ := s.ParseInt64()
+
+	return out
+}
+
+func (s String) ParseInt64() (int64, error) {
+	v, err := strconv.ParseInt(string(s), 10, 64)
+	if err != nil {
+		return 0, fmt.Errorf("string int64:%w", err)
+	}
+
+	return v, nil
+}
+
+func (s String) ParseUint() (uint, error) {
+	uout, err := s.ParseUint64()
+
+	return uint(uout), err
+}
+
+func (s String) ParseUint64() (uint64, error) {
+	uout, err := strconv.ParseUint(string(s), 10, 64)
+	if err != nil {
+		return 0, fmt.Errorf("string uint:%w", err)
+	}
+
+	return uout, nil
+}
+
+func (s String) ParseFloat64() (float64, error) {
+	fout, err := strconv.ParseFloat(string(s), 64)
+	if err != nil {
+		return 0, fmt.Errorf("string float64:%w", err)
+	}
+
+	return fout, nil
+}
+
+func (s String) ParseBool() (bool, error) {
+	v, err := strconv.ParseBool(string(s))
+	if err != nil {
+		return false, fmt.Errorf("string bool:%w", err)
+	}
+
+	return v, nil
+}
+
+func (s String) ParseDuration() (time.Duration, error) {
+	v, err := time.ParseDuration(string(s))
+	if err != nil {
+		return 0, fmt.Errorf("string duration:%w", err)
+	}
+
+	return v, nil
+}
+
+func (s String) ParseTime() (time.Time, error) {
+	v, err := time.Parse(time.RFC3339, string(s))
+	if err != nil {
+		return time.Time{}, fmt.Errorf("string time:%w", err)
 	}
 
-	return s.String()
+	return v, nil
 }

input/value/string_test.go

@@ -0,0 +1,28 @@
+package value_test
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"gitoa.ru/go-4devs/console/input/value"
+)
+
+func TestStringUnmarshal(t *testing.T) {
+	t.Parallel()
+
+	st := value.New("test")
+	sta := value.New([]string{"test1", "test2"})
+
+	ac := ""
+	require.NoError(t, st.Unmarshal(&ac))
+	require.Equal(t, "test", ac)
+
+	aca := []string{}
+	require.NoError(t, sta.Unmarshal(&aca))
+	require.Equal(t, []string{"test1", "test2"}, aca)
+
+	require.ErrorIs(t, sta.Unmarshal(ac), value.ErrWrongType)
+	require.ErrorIs(t, sta.Unmarshal(&ac), value.ErrWrongType)
+	require.ErrorIs(t, st.Unmarshal(aca), value.ErrWrongType)
+	require.ErrorIs(t, st.Unmarshal(&aca), value.ErrWrongType)
+}

input/value/time.go

@@ -1,44 +1,130 @@
 package value
 
 import (
+	"fmt"
 	"time"
+)
 
-	"gitoa.ru/go-4devs/console/input/value/flag"
+var (
+	_ ParseValue = Time{time.Now()}
+	_ SliceValue = (Times)(nil)
 )
 
-type Time struct {
-	empty
-	Val  []time.Time
-	Flag flag.Flag
+func NewTimes(in []time.Time) Slice {
+	return Slice{SliceValue: Times(in)}
 }
 
-func (t *Time) Append(in string) error {
-	v, err := time.Parse(time.RFC3339, in)
-	if err != nil {
-		return err
+type Times []time.Time
+
+func (t Times) Any() interface{} {
+	return t.Times()
 }
 
-	t.Val = append(t.Val, v)
+func (t Times) Unmarshal(val interface{}) error {
+	res, ok := val.(*[]time.Time)
+	if !ok {
+		return fmt.Errorf("%w: expect *[]time.Time", ErrWrongType)
+	}
+
+	*res = t
+
+	return nil
+}
 
+func (t Times) Strings() []string {
 	return nil
 }
 
-func (t *Time) Time() time.Time {
-	if !t.Flag.IsArray() && len(t.Val) == 1 {
-		return t.Val[0]
+func (t Times) Ints() []int {
+	return nil
 }
 
-	return time.Time{}
+func (t Times) Int64s() []int64 {
+	return nil
 }
 
-func (t *Time) Times() []time.Time {
-	return t.Val
+func (t Times) Uints() []uint {
+	return nil
 }
 
-func (t *Time) Amy() interface{} {
-	if t.Flag.IsArray() {
-		return t.Times()
+func (t Times) Uint64s() []uint64 {
+	return nil
+}
+
+func (t Times) Float64s() []float64 {
+	return nil
+}
+
+func (t Times) Bools() []bool {
+	return nil
+}
+
+func (t Times) Durations() []time.Duration {
+	return nil
+}
+
+func (t Times) Times() []time.Time {
+	out := make([]time.Time, len(t))
+	copy(out, t)
+
+	return out
+}
+
+func NewTime(in time.Time) Read {
+	return Read{ParseValue: Time{Time: in}}
+}
+
+type Time struct {
+	time.Time
+}
+
+func (t Time) ParseString() (string, error) {
+	return t.Format(time.RFC3339), nil
+}
+
+func (t Time) ParseInt() (int, error) {
+	return int(t.Unix()), nil
+}
+
+func (t Time) ParseInt64() (int64, error) {
+	return t.Unix(), nil
+}
+
+func (t Time) ParseUint() (uint, error) {
+	return uint(t.Unix()), nil
+}
+
+func (t Time) ParseUint64() (uint64, error) {
+	return uint64(t.Unix()), nil
+}
+
+func (t Time) ParseFloat64() (float64, error) {
+	return float64(t.UnixNano()), nil
+}
+
+func (t Time) ParseBool() (bool, error) {
+	return false, fmt.Errorf("time bool:%w", ErrWrongType)
+}
+
+func (t Time) ParseDuration() (time.Duration, error) {
+	return 0, fmt.Errorf("time duration:%w", ErrWrongType)
+}
+
+func (t Time) ParseTime() (time.Time, error) {
+	return t.Time, nil
+}
+
+func (t Time) Unmarshal(val interface{}) error {
+	res, ok := val.(*time.Time)
+	if !ok {
+		return fmt.Errorf("%w: expect *time.Time", ErrWrongType)
+	}
+
+	*res = t.Time
+
+	return nil
 }
 
-	return t.Time()
+func (t Time) Any() interface{} {
+	return t.Time
 }

input/value/uint.go

@@ -1,44 +1,129 @@
 package value
 
 import (
+	"fmt"
 	"strconv"
+	"time"
+)
 
-	"gitoa.ru/go-4devs/console/input/value/flag"
+var (
+	_ ParseValue = Uint(0)
+	_ SliceValue = (Uints)(nil)
 )
 
-type Uint struct {
-	empty
-	Val  []uint
-	Flag flag.Flag
+func NewUints(in []uint) Slice {
+	return Slice{SliceValue: Uints(in)}
 }
 
-func (u *Uint) Append(in string) error {
-	v, err := strconv.ParseUint(in, 10, 64)
-	if err != nil {
-		return err
+type Uints []uint
+
+func (u Uints) Any() interface{} {
+	return u.Uints()
 }
 
-	u.Val = append(u.Val, uint(v))
+func (u Uints) Unmarshal(val interface{}) error {
+	res, ok := val.(*[]uint)
+	if !ok {
+		return fmt.Errorf("%w: expect *[]uint", ErrWrongType)
+	}
+
+	*res = u
 
 	return nil
 }
 
-func (u *Uint) Uint() uint {
-	if !u.Flag.IsArray() && len(u.Val) == 1 {
-		return u.Val[0]
+func (u Uints) Strings() []string {
+	return nil
 }
 
-	return 0
+func (u Uints) Ints() []int {
+	return nil
 }
 
-func (u *Uint) Uints() []uint {
-	return u.Val
+func (u Uints) Int64s() []int64 {
+	return nil
 }
 
-func (u *Uint) Any() interface{} {
-	if u.Flag.IsArray() {
-		return u.Uints()
+func (u Uints) Uints() []uint {
+	out := make([]uint, len(u))
+	copy(out, u)
+
+	return out
+}
+
+func (u Uints) Uint64s() []uint64 {
+	return nil
+}
+
+func (u Uints) Float64s() []float64 {
+	return nil
+}
+
+func (u Uints) Bools() []bool {
+	return nil
+}
+
+func (u Uints) Durations() []time.Duration {
+	return nil
+}
+
+func (u Uints) Times() []time.Time {
+	return nil
+}
+
+func NewUint(in uint) Read {
+	return Read{ParseValue: Uint(in)}
+}
+
+type Uint uint
+
+func (u Uint) ParseString() (string, error) {
+	return strconv.FormatUint(uint64(u), 10), nil
+}
+
+func (u Uint) ParseInt() (int, error) {
+	return int(u), nil
+}
+
+func (u Uint) ParseInt64() (int64, error) {
+	return int64(u), nil
+}
+
+func (u Uint) ParseUint() (uint, error) {
+	return uint(u), nil
+}
+
+func (u Uint) ParseUint64() (uint64, error) {
+	return uint64(u), nil
+}
+
+func (u Uint) ParseFloat64() (float64, error) {
+	return float64(u), nil
+}
+
+func (u Uint) ParseBool() (bool, error) {
+	return false, fmt.Errorf("uint:%w", ErrWrongType)
+}
+
+func (u Uint) ParseDuration() (time.Duration, error) {
+	return time.Duration(u), nil
+}
+
+func (u Uint) ParseTime() (time.Time, error) {
+	return time.Unix(0, int64(u)), nil
+}
+
+func (u Uint) Unmarshal(val interface{}) error {
+	res, ok := val.(*uint)
+	if !ok {
+		return fmt.Errorf("%w: expect *uint", ErrWrongType)
+	}
+
+	*res = uint(u)
+
+	return nil
 }
 
-	return u.Uint()
+func (u Uint) Any() interface{} {
+	return uint(u)
 }

input/value/uint64.go

@@ -1,44 +1,129 @@
 package value
 
 import (
+	"fmt"
 	"strconv"
+	"time"
+)
 
-	"gitoa.ru/go-4devs/console/input/value/flag"
+var (
+	_ ParseValue = Uint64(0)
+	_ SliceValue = (Uint64s)(nil)
 )
 
-type Uint64 struct {
-	empty
-	Val  []uint64
-	Flag flag.Flag
+func NewUint64s(in []uint64) Slice {
+	return Slice{SliceValue: Uint64s(in)}
 }
 
-func (u *Uint64) Append(in string) error {
-	v, err := strconv.ParseUint(in, 10, 64)
-	if err != nil {
-		return err
+type Uint64s []uint64
+
+func (u Uint64s) Any() interface{} {
+	return u.Uint64s()
 }
 
-	u.Val = append(u.Val, v)
+func (u Uint64s) Unmarshal(val interface{}) error {
+	res, ok := val.(*[]uint64)
+	if !ok {
+		return fmt.Errorf("%w: expect *[]uint64", ErrWrongType)
+	}
+
+	*res = u
 
 	return nil
 }
 
-func (u *Uint64) Uint64() uint64 {
-	if !u.Flag.IsArray() && len(u.Val) == 1 {
-		return u.Val[0]
+func (u Uint64s) Strings() []string {
+	return nil
 }
 
-	return 0
+func (u Uint64s) Ints() []int {
+	return nil
 }
 
-func (u *Uint64) Uint64s() []uint64 {
-	return u.Val
+func (u Uint64s) Int64s() []int64 {
+	return nil
 }
 
-func (u *Uint64) Any() interface{} {
-	if u.Flag.IsArray() {
-		return u.Uint64s()
+func (u Uint64s) Uints() []uint {
+	return nil
+}
+
+func (u Uint64s) Uint64s() []uint64 {
+	out := make([]uint64, len(u))
+	copy(out, u)
+
+	return out
+}
+
+func (u Uint64s) Float64s() []float64 {
+	return nil
+}
+
+func (u Uint64s) Bools() []bool {
+	return nil
+}
+
+func (u Uint64s) Durations() []time.Duration {
+	return nil
+}
+
+func (u Uint64s) Times() []time.Time {
+	return nil
+}
+
+func NewUint64(in uint64) Read {
+	return Read{ParseValue: Uint64(in)}
+}
+
+type Uint64 uint64
+
+func (u Uint64) ParseString() (string, error) {
+	return strconv.FormatUint(uint64(u), 10), nil
+}
+
+func (u Uint64) ParseInt() (int, error) {
+	return int(u), nil
+}
+
+func (u Uint64) ParseInt64() (int64, error) {
+	return int64(u), nil
+}
+
+func (u Uint64) ParseUint() (uint, error) {
+	return uint(u), nil
+}
+
+func (u Uint64) ParseUint64() (uint64, error) {
+	return uint64(u), nil
+}
+
+func (u Uint64) ParseFloat64() (float64, error) {
+	return float64(u), nil
+}
+
+func (u Uint64) ParseBool() (bool, error) {
+	return false, fmt.Errorf("uint64 bool:%w", ErrWrongType)
+}
+
+func (u Uint64) ParseDuration() (time.Duration, error) {
+	return time.Duration(u), nil
+}
+
+func (u Uint64) ParseTime() (time.Time, error) {
+	return time.Unix(0, int64(0)), nil
+}
+
+func (u Uint64) Unmarshal(val interface{}) error {
+	res, ok := val.(*uint64)
+	if !ok {
+		return fmt.Errorf("%w: expect *uint64", ErrWrongType)
+	}
+
+	*res = uint64(u)
+
+	return nil
 }
 
-	return u.Uint64()
+func (u Uint64) Any() interface{} {
+	return uint64(u)
 }

input/value/value.go

@@ -2,11 +2,19 @@ package value
 
 import (
 	"time"
-
-	"gitoa.ru/go-4devs/console/input/value/flag"
 )
 
 type Value interface {
+	ReadValue
+	ParseValue
+	ArrValue
+}
+
+type UnmarshalValue interface {
+	Unmarshal(val interface{}) error
+}
+
+type ReadValue interface {
 	String() string
 	Int() int
 	Int64() int64
@@ -16,8 +24,19 @@ type Value interface {
 	Bool() bool
 	Duration() time.Duration
 	Time() time.Time
+}
+
+type AnyValue interface {
 	Any() interface{}
+}
 
+type SliceValue interface {
+	AnyValue
+	UnmarshalValue
+	ArrValue
+}
+
+type ArrValue interface {
 	Strings() []string
 	Ints() []int
 	Int64s() []int64
@@ -29,86 +48,74 @@ type Value interface {
 	Times() []time.Time
 }
 
+//nolint:interfacebloat
+type ParseValue interface {
+	ParseString() (string, error)
+	ParseInt() (int, error)
+	ParseInt64() (int64, error)
+	ParseUint() (uint, error)
+	ParseUint64() (uint64, error)
+	ParseFloat64() (float64, error)
+	ParseBool() (bool, error)
+	ParseDuration() (time.Duration, error)
+	ParseTime() (time.Time, error)
+	UnmarshalValue
+	AnyValue
+}
+
 type Append interface {
 	Value
-	Append(string) error
+	Append(string) (Value, error)
 }
 
-//nolint: gocyclo
-func New(v interface{}) Append {
-	switch val := v.(type) {
+//nolint:gocyclo,cyclop
+func New(in interface{}) Value {
+	switch val := in.(type) {
+	case bool:
+		return Read{Bool(val)}
+	case []bool:
+		return NewBools(val)
 	case string:
-		return &String{Val: []string{val}, Flag: flag.String}
+		return Read{String(val)}
 	case int:
-		return &Int{Val: []int{val}, Flag: flag.Int}
+		return Read{Int(val)}
 	case int64:
-		return &Int64{Val: []int64{val}, Flag: flag.Int64}
+		return Read{Int64(val)}
 	case uint:
-		return &Uint{Val: []uint{val}, Flag: flag.Uint}
+		return Read{Uint(val)}
 	case uint64:
-		return &Uint64{Val: []uint64{val}, Flag: flag.Uint64}
+		return Read{Uint64(val)}
 	case float64:
-		return &Float64{Val: []float64{val}, Flag: flag.Float64}
-	case bool:
-		return &Bool{Val: []bool{val}, Flag: flag.Bool}
+		return Read{Float64(val)}
 	case time.Duration:
-		return &Duration{Val: []time.Duration{val}, Flag: flag.Duration}
+		return Read{Duration(val)}
 	case time.Time:
-		return &Time{Val: []time.Time{val}, Flag: flag.Time}
+		return Read{Time{val}}
 	case []int64:
-		return &Int64{Val: val, Flag: flag.Int64 | flag.Array}
+		return Slice{Int64s(val)}
 	case []uint:
-		return &Uint{Val: val, Flag: flag.Uint | flag.Array}
+		return Slice{Uints(val)}
 	case []uint64:
-		return &Uint64{Val: val, Flag: flag.Uint64 | flag.Array}
+		return Slice{Uint64s(val)}
 	case []float64:
-		return &Float64{Val: val, Flag: flag.Float64 | flag.Array}
-	case []bool:
-		return &Bool{Val: val, Flag: flag.Bool | flag.Array}
+		return Slice{Float64s(val)}
 	case []time.Duration:
-		return &Duration{Val: val, Flag: flag.Duration | flag.Array}
+		return Slice{Durations(val)}
 	case []time.Time:
-		return &Time{Val: val, Flag: flag.Time | flag.Array}
+		return Slice{Times(val)}
 	case []string:
-		return &String{Val: val, Flag: flag.String | flag.Array}
+		return Slice{Strings(val)}
 	case []int:
-		return &Int{Val: val, Flag: flag.Int | flag.Array}
+		return Slice{Ints(val)}
 	case []interface{}:
-		return &Any{Val: val, Flag: flag.Any | flag.Array}
-	case Append:
-		return val
+		return Read{Any{v: val}}
 	case Value:
-		return &Read{Value: val}
+		return val
 	default:
-		if v != nil {
-			return &Any{Val: []interface{}{v}, Flag: flag.Any}
+		if in != nil {
+			return Read{Any{v: in}}
 		}
 
-		return &empty{}
-	}
-}
-
-func ByFlag(f flag.Flag) Append {
-	switch {
-	case f.IsInt():
-		return &Int{Flag: f | flag.Int}
-	case f.IsInt64():
-		return &Int64{Flag: f | flag.Int64}
-	case f.IsUint():
-		return &Uint{Flag: f | flag.Uint}
-	case f.IsUint64():
-		return &Uint64{Flag: f | flag.Uint64}
-	case f.IsFloat64():
-		return &Float64{Flag: f | flag.Float64}
-	case f.IsBool():
-		return &Bool{Flag: f | flag.Bool}
-	case f.IsDuration():
-		return &Duration{Flag: f | flag.Duration}
-	case f.IsTime():
-		return &Time{Flag: f | flag.Time}
-	case f.IsAny():
-		return &Any{Flag: f | flag.Any}
-	default:
-		return &String{}
+		return Empty()
 	}
 }

input/variable/argtype.go

@@ -0,0 +1,10 @@
+package variable
+
+//go:generate stringer -type=ArgType -linecomment
+
+type ArgType int
+
+const (
+	TypeOption   ArgType = iota + 1 // option
+	TypeArgument                    // argument
+)

input/variable/argtype_string.go

@@ -0,0 +1,25 @@
+// Code generated by "stringer -type=ArgType -linecomment"; DO NOT EDIT.
+
+package variable
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[TypeOption-1]
+	_ = x[TypeArgument-2]
+}
+
+const _ArgType_name = "optionargument"
+
+var _ArgType_index = [...]uint8{0, 6, 14}
+
+func (i ArgType) String() string {
+	i -= 1
+	if i < 0 || i >= ArgType(len(_ArgType_index)-1) {
+		return "ArgType(" + strconv.FormatInt(int64(i+1), 10) + ")"
+	}
+	return _ArgType_name[_ArgType_index[i]:_ArgType_index[i+1]]
+}

input/variable/bool.go

@@ -0,0 +1,31 @@
+package variable
+
+import (
+	"fmt"
+	"strconv"
+
+	"gitoa.ru/go-4devs/console/input/flag"
+	"gitoa.ru/go-4devs/console/input/value"
+)
+
+func Bool(name, description string, opts ...Option) Variable {
+	return String(name, description, append(opts, WithParse(CreateBool, AppendBool), Value(flag.Bool))...)
+}
+
+func CreateBool(in string) (value.Value, error) {
+	out, err := strconv.ParseBool(in)
+	if err != nil {
+		return nil, fmt.Errorf("create bool:%w", err)
+	}
+
+	return value.NewBool(out), nil
+}
+
+func AppendBool(old value.Value, in string) (value.Value, error) {
+	out, err := strconv.ParseBool(in)
+	if err != nil {
+		return nil, fmt.Errorf("create bool:%w", err)
+	}
+
+	return value.NewBools(append(old.Bools(), out)), nil
+}

input/variable/duration.go

@@ -0,0 +1,31 @@
+package variable
+
+import (
+	"fmt"
+	"time"
+
+	"gitoa.ru/go-4devs/console/input/flag"
+	"gitoa.ru/go-4devs/console/input/value"
+)
+
+func Duration(name, description string, opts ...Option) Variable {
+	return String(name, description, append(opts, WithParse(CreateDuration, AppendDuration), Value(flag.Duration))...)
+}
+
+func CreateDuration(in string) (value.Value, error) {
+	out, err := time.ParseDuration(in)
+	if err != nil {
+		return nil, fmt.Errorf("create duration:%w", err)
+	}
+
+	return value.NewDuration(out), nil
+}
+
+func AppendDuration(old value.Value, in string) (value.Value, error) {
+	out, err := time.ParseDuration(in)
+	if err != nil {
+		return nil, fmt.Errorf("append duration:%w", err)
+	}
+
+	return value.NewDurations(append(old.Durations(), out)), nil
+}

input/variable/err.go

@@ -0,0 +1,32 @@
+package variable
+
+import (
+	"errors"
+	"fmt"
+)
+
+type Error struct {
+	Name string
+	Err  error
+	Type ArgType
+}
+
+func (o Error) Error() string {
+	return fmt.Sprintf("%s: '%s' %s", o.Type, o.Name, o.Err)
+}
+
+func (o Error) Is(err error) bool {
+	return errors.Is(err, o.Err)
+}
+
+func (o Error) Unwrap() error {
+	return o.Err
+}
+
+func Err(name string, t ArgType, err error) Error {
+	return Error{
+		Name: name,
+		Type: t,
+		Err:  err,
+	}
+}

input/variable/float64.go

@@ -0,0 +1,31 @@
+package variable
+
+import (
+	"fmt"
+	"strconv"
+
+	"gitoa.ru/go-4devs/console/input/flag"
+	"gitoa.ru/go-4devs/console/input/value"
+)
+
+func Float64(name, description string, opts ...Option) Variable {
+	return String(name, description, append(opts, WithParse(CreateFloat64, AppendFloat64), Value(flag.Float64))...)
+}
+
+func CreateFloat64(in string) (value.Value, error) {
+	out, err := strconv.ParseFloat(in, 10)
+	if err != nil {
+		return nil, fmt.Errorf("create float64:%w", err)
+	}
+
+	return value.NewFloat64(out), nil
+}
+
+func AppendFloat64(old value.Value, in string) (value.Value, error) {
+	out, err := strconv.ParseFloat(in, 10)
+	if err != nil {
+		return nil, fmt.Errorf("append float64:%w", err)
+	}
+
+	return value.NewFloat64s(append(old.Float64s(), out)), nil
+}

input/variable/int.go

@@ -0,0 +1,31 @@
+package variable
+
+import (
+	"fmt"
+	"strconv"
+
+	"gitoa.ru/go-4devs/console/input/flag"
+	"gitoa.ru/go-4devs/console/input/value"
+)
+
+func Int(name, description string, opts ...Option) Variable {
+	return New(name, description, append(opts, WithParse(CreateInt, AppendInt), Value(flag.Int))...)
+}
+
+func AppendInt(old value.Value, in string) (value.Value, error) {
+	out, err := strconv.Atoi(in)
+	if err != nil {
+		return nil, fmt.Errorf("append int:%w", err)
+	}
+
+	return value.NewInts(append(old.Ints(), out)), nil
+}
+
+func CreateInt(in string) (value.Value, error) {
+	out, err := strconv.Atoi(in)
+	if err != nil {
+		return nil, fmt.Errorf("create int:%w", err)
+	}
+
+	return value.NewInt(out), nil
+}

input/variable/int64.go

@@ -0,0 +1,31 @@
+package variable
+
+import (
+	"fmt"
+	"strconv"
+
+	"gitoa.ru/go-4devs/console/input/flag"
+	"gitoa.ru/go-4devs/console/input/value"
+)
+
+func Int64(name, description string, opts ...Option) Variable {
+	return String(name, description, append(opts, WithParse(CreateInt64, AppendInt64), Value(flag.Int64))...)
+}
+
+func CreateInt64(in string) (value.Value, error) {
+	out, err := strconv.ParseInt(in, 10, 64)
+	if err != nil {
+		return nil, fmt.Errorf("create int64:%w", err)
+	}
+
+	return value.NewInt64(out), nil
+}
+
+func AppendInt64(old value.Value, in string) (value.Value, error) {
+	out, err := strconv.ParseInt(in, 10, 64)
+	if err != nil {
+		return nil, fmt.Errorf("append int64:%w", err)
+	}
+
+	return value.NewInt64s(append(old.Int64s(), out)), nil
+}

input/variable/string.go

@@ -0,0 +1,17 @@
+package variable
+
+import (
+	"gitoa.ru/go-4devs/console/input/value"
+)
+
+func String(name, description string, opts ...Option) Variable {
+	return New(name, description, opts...)
+}
+
+func CreateString(in string) (value.Value, error) {
+	return value.NewString(in), nil
+}
+
+func AppendString(old value.Value, in string) (value.Value, error) {
+	return value.NewStrings(append(old.Strings(), in)), nil
+}

input/variable/time.go

@@ -0,0 +1,77 @@
+package variable
+
+import (
+	"fmt"
+	"time"
+
+	"gitoa.ru/go-4devs/console/input/errs"
+	"gitoa.ru/go-4devs/console/input/flag"
+	"gitoa.ru/go-4devs/console/input/value"
+)
+
+const (
+	ParamFormat = "format"
+)
+
+func Time(name, description string, opts ...Option) Variable {
+	return String(name, description, append(opts,
+		WithParamParse(CreateTime, AppendTime),
+		WithParam(ParamFormat, RFC3339),
+		Value(flag.Time),
+	)...)
+}
+
+func RFC3339(in interface{}) error {
+	v, ok := in.(*string)
+	if !ok {
+		return fmt.Errorf("%w: expect *string got %T", errs.ErrWrongType, in)
+	}
+
+	*v = time.RFC3339
+
+	return nil
+}
+
+func CreateTime(param Param) Create {
+	var (
+		formatErr error
+		format    string
+	)
+
+	formatErr = param.Value(ParamFormat, &format)
+
+	return func(in string) (value.Value, error) {
+		if formatErr != nil {
+			return nil, fmt.Errorf("create format:%w", formatErr)
+		}
+
+		out, err := time.Parse(format, in)
+		if err != nil {
+			return nil, fmt.Errorf("create time:%w", err)
+		}
+
+		return value.NewTime(out), nil
+	}
+}
+
+func AppendTime(param Param) Append {
+	var (
+		formatErr error
+		format    string
+	)
+
+	formatErr = param.Value(ParamFormat, &format)
+
+	return func(old value.Value, in string) (value.Value, error) {
+		if formatErr != nil {
+			return nil, fmt.Errorf("append format:%w", formatErr)
+		}
+
+		out, err := time.Parse(format, in)
+		if err != nil {
+			return nil, fmt.Errorf("append time:%w", err)
+		}
+
+		return value.NewTimes(append(old.Times(), out)), nil
+	}
+}

input/variable/uint.go

@@ -0,0 +1,31 @@
+package variable
+
+import (
+	"fmt"
+	"strconv"
+
+	"gitoa.ru/go-4devs/console/input/flag"
+	"gitoa.ru/go-4devs/console/input/value"
+)
+
+func Uint(name, description string, opts ...Option) Variable {
+	return String(name, description, append(opts, WithParse(CreateUint, AppendUint), Value(flag.Uint))...)
+}
+
+func CreateUint(in string) (value.Value, error) {
+	out, err := strconv.ParseUint(in, 10, 64)
+	if err != nil {
+		return nil, fmt.Errorf("create uint:%w", err)
+	}
+
+	return value.NewUint(uint(out)), nil
+}
+
+func AppendUint(old value.Value, in string) (value.Value, error) {
+	out, err := strconv.ParseUint(in, 10, 64)
+	if err != nil {
+		return nil, fmt.Errorf("append uint:%w", err)
+	}
+
+	return value.NewUints(append(old.Uints(), uint(out))), nil
+}

input/variable/uint64.go

@@ -0,0 +1,31 @@
+package variable
+
+import (
+	"fmt"
+	"strconv"
+
+	"gitoa.ru/go-4devs/console/input/flag"
+	"gitoa.ru/go-4devs/console/input/value"
+)
+
+func Uint64(name, descriontion string, opts ...Option) Variable {
+	return String(name, descriontion, append(opts, WithParse(CreateUint64, AppendUint64), Value(flag.Uint64))...)
+}
+
+func CreateUint64(in string) (value.Value, error) {
+	out, err := strconv.ParseUint(in, 10, 64)
+	if err != nil {
+		return nil, fmt.Errorf("create uint64:%w", err)
+	}
+
+	return value.NewUint64(out), nil
+}
+
+func AppendUint64(old value.Value, in string) (value.Value, error) {
+	out, err := strconv.ParseUint(in, 10, 64)
+	if err != nil {
+		return nil, fmt.Errorf("append uint64:%w", err)
+	}
+
+	return value.NewUint64s(append(old.Uint64s(), out)), nil
+}

input/variable/variable.go

@@ -0,0 +1,158 @@
+package variable
+
+import (
+	"fmt"
+
+	"gitoa.ru/go-4devs/console/input/errs"
+	"gitoa.ru/go-4devs/console/input/flag"
+	"gitoa.ru/go-4devs/console/input/value"
+)
+
+type Option func(*Variable)
+
+func WithType(t ArgType) Option {
+	return func(v *Variable) {
+		v.Type = t
+	}
+}
+
+func ArgOption(v *Variable) {
+	v.Type = TypeOption
+}
+
+func ArgArgument(v *Variable) {
+	v.Type = TypeArgument
+}
+
+func Value(in flag.Flag) Option {
+	return func(v *Variable) {
+		v.Flag |= in
+	}
+}
+
+func Default(in value.Value) Option {
+	return func(v *Variable) {
+		v.Default = in
+	}
+}
+
+func Required(v *Variable) {
+	v.Flag |= flag.Required
+}
+
+func WithParse(create Create, update Append) Option {
+	return func(v *Variable) {
+		v.append = func(Param) Append { return update }
+		v.create = func(Param) Create { return create }
+	}
+}
+
+func WithParamParse(create func(Param) Create, update func(Param) Append) Option {
+	return func(v *Variable) {
+		v.append = update
+		v.create = create
+	}
+}
+
+func Valid(f ...func(value.Value) error) Option {
+	return func(v *Variable) {
+		v.Valid = f
+	}
+}
+
+func Array(o *Variable) {
+	o.Flag |= flag.Array
+}
+
+func WithParam(name string, fn func(interface{}) error) Option {
+	return func(v *Variable) {
+		v.params[name] = fn
+	}
+}
+
+type (
+	Create func(s string) (value.Value, error)
+	Append func(old value.Value, s string) (value.Value, error)
+)
+
+func New(name, description string, opts ...Option) Variable {
+	res := Variable{
+		Name:        name,
+		Description: description,
+		Type:        TypeOption,
+		create:      func(Param) Create { return CreateString },
+		append:      func(Param) Append { return AppendString },
+		params:      make(Params),
+	}
+
+	for _, opt := range opts {
+		opt(&res)
+	}
+
+	return res
+}
+
+type Variable struct {
+	Name        string
+	Description string
+	Alias       string
+	Flag        flag.Flag
+	Type        ArgType
+	Default     value.Value
+	Valid       []func(value.Value) error
+	params      Params
+	create      func(Param) Create
+	append      func(Param) Append
+}
+
+func (v Variable) Validate(in value.Value) error {
+	for _, valid := range v.Valid {
+		if err := valid(in); err != nil {
+			return Err(v.Name, v.Type, err)
+		}
+	}
+
+	return nil
+}
+
+func (v Variable) IsArray() bool {
+	return v.Flag.IsArray()
+}
+
+func (v Variable) IsRequired() bool {
+	return v.Flag.IsRequired()
+}
+
+func (v Variable) HasDefault() bool {
+	return v.Default != nil
+}
+
+func (v Variable) IsBool() bool {
+	return v.Flag.IsBool()
+}
+
+func (v Variable) HasShort() bool {
+	return v.Type == TypeOption && len(v.Alias) == 1
+}
+
+func (v Variable) Create(s string) (value.Value, error) {
+	return v.create(v.params)(s)
+}
+
+func (v Variable) Append(old value.Value, s string) (value.Value, error) {
+	return v.append(v.params)(old, s)
+}
+
+type Param interface {
+	Value(name string, v interface{}) error
+}
+
+type Params map[string]func(interface{}) error
+
+func (p Params) Value(name string, v interface{}) error {
+	if p, ok := p[name]; ok {
+		return p(v)
+	}
+
+	return fmt.Errorf("%w: param %v", errs.ErrNotFound, name)
+}

list.go

@@ -32,14 +32,39 @@ You can also display the commands for a specific namespace:
 You can also output the information in other formats by using the <comment>--format</comment> option:
   <info>{{ .Bin }} {{ .Name }} --format=xml</info>
 `,
-		Execute: func(ctx context.Context, in input.Input, out output.Output) error {
+		Execute: executeList,
+		Configure: func(ctx context.Context, config *input.Definition) error {
+			formats := descriptor.Descriptors()
+			config.
+				SetArguments(
+					argument.String("namespace", "The namespace name"),
+				).
+				SetOptions(
+					option.String(helpOptFormat, fmt.Sprintf("The output format (%s)", strings.Join(formats, ", ")),
+						option.Required,
+						option.Default(formats[0]),
+						option.Valid(
+							validator.NotBlank(0),
+							validator.Enum(formats...),
+						),
+					),
+				)
+
+			return nil
+		},
+	}
+}
+
+//nolint:cyclop
+func executeList(ctx context.Context, in input.Input, out output.Output) error {
 	ns := in.Argument(ctx, "namespace").String()
 	format := in.Option(ctx, helpOptFormat).String()
 
 	des, err := descriptor.Find(format)
 	if err != nil {
-				return err
+		return fmt.Errorf("find descriptor: %w", err)
 	}
+
 	cmds := Commands()
 	commands := descriptor.Commands{
 		Namespace:  ns,
@@ -70,11 +95,13 @@ You can also output the information in other formats by using the <comment>--for
 			groups[gn[0]] = &descriptor.NSCommand{
 				Name: gn[0],
 			}
+
 			namespaces = append(namespaces, gn[0])
 		}
 
 		groups[gn[0]].Append(name, cmd.Description)
 	}
+
 	if len(empty.Commands) > 0 {
 		commands.Commands = append(commands.Commands, empty)
 	}
@@ -87,26 +114,9 @@ You can also output the information in other formats by using the <comment>--for
 		return fmt.Errorf("%w: namespace %s", ErrNotFound, ns)
 	}
 
-			return des.Commands(ctx, out, commands)
-		},
-		Configure: func(ctx context.Context, config *input.Definition) error {
-			formats := descriptor.Descriptors()
-			config.
-				SetArguments(
-					argument.New("namespace", "The namespace name"),
-				).
-				SetOptions(
-					option.New(helpOptFormat, fmt.Sprintf("The output format (%s)", strings.Join(formats, ", ")),
-						option.Required,
-						option.Default(formats[0]),
-						option.Valid(
-							validator.NotBlank(0),
-							validator.Enum(formats...),
-						),
-					),
-				)
+	if err := des.Commands(ctx, out, commands); err != nil {
+		return fmt.Errorf("descriptor:%w", err)
+	}
 
 	return nil
-		},
-	}
 }

output/descriptor/txt.go

@@ -10,8 +10,8 @@ import (
 	"time"
 
 	"gitoa.ru/go-4devs/console/input"
+	"gitoa.ru/go-4devs/console/input/flag"
 	"gitoa.ru/go-4devs/console/input/value"
-	"gitoa.ru/go-4devs/console/input/value/flag"
 	"gitoa.ru/go-4devs/console/output"
 )
 
@@ -43,7 +43,7 @@ var (
 {{- help . }}
 		`))
 
-	txtListTempkate = template.Must(template.New("txt_list").
+	txtListTemplate = template.Must(template.New("txt_list").
 			Funcs(txtFunc).
 			Parse(`<comment>Usage:</comment>
   command [options] [arguments]
@@ -58,7 +58,7 @@ func (t *txt) Command(ctx context.Context, out output.Output, cmd Command) error
 	var tpl bytes.Buffer
 
 	if err := txtHelpTemplate.Execute(&tpl, cmd); err != nil {
-		return err
+		return fmt.Errorf("execute txt help tpl:%w", err)
 	}
 
 	out.Println(ctx, tpl.String())
@@ -69,8 +69,8 @@ func (t *txt) Command(ctx context.Context, out output.Output, cmd Command) error
 func (t *txt) Commands(ctx context.Context, out output.Output, cmds Commands) error {
 	var buf bytes.Buffer
 
-	if err := txtListTempkate.Execute(&buf, cmds); err != nil {
-		return err
+	if err := txtListTemplate.Execute(&buf, cmds); err != nil {
+		return fmt.Errorf("execute txt list tpl:%w", err)
 	}
 
 	out.Println(ctx, buf.String())
@@ -78,36 +78,37 @@ func (t *txt) Commands(ctx context.Context, out output.Output, cmds Commands) er
 	return nil
 }
 
-func txtDefaultArray(v value.Value, f flag.Flag) string {
-	st := v.Strings()
+//nolint:cyclop
+func txtDefaultArray(val value.Value, fl flag.Flag) string {
+	st := val.Strings()
 
 	switch {
-	case f.IsInt():
-		for _, i := range v.Ints() {
+	case fl.IsInt():
+		for _, i := range val.Ints() {
 			st = append(st, strconv.Itoa(i))
 		}
-	case f.IsInt64():
-		for _, i := range v.Int64s() {
+	case fl.IsInt64():
+		for _, i := range val.Int64s() {
 			st = append(st, strconv.FormatInt(i, 10))
 		}
-	case f.IsUint():
-		for _, u := range v.Uints() {
+	case fl.IsUint():
+		for _, u := range val.Uints() {
 			st = append(st, strconv.FormatUint(uint64(u), 10))
 		}
-	case f.IsUint64():
-		for _, u := range v.Uint64s() {
+	case fl.IsUint64():
+		for _, u := range val.Uint64s() {
 			st = append(st, strconv.FormatUint(u, 10))
 		}
-	case f.IsFloat64():
-		for _, f := range v.Float64s() {
+	case fl.IsFloat64():
+		for _, f := range val.Float64s() {
 			st = append(st, strconv.FormatFloat(f, 'g', -1, 64))
 		}
-	case f.IsDuration():
-		for _, d := range v.Durations() {
+	case fl.IsDuration():
+		for _, d := range val.Durations() {
 			st = append(st, d.String())
 		}
-	case f.IsTime():
-		for _, d := range v.Times() {
+	case fl.IsTime():
+		for _, d := range val.Times() {
 			st = append(st, d.Format(time.RFC3339))
 		}
 	}
@@ -115,32 +116,33 @@ func txtDefaultArray(v value.Value, f flag.Flag) string {
 	return strings.Join(st, ",")
 }
 
-func txtDefault(v value.Value, f flag.Flag) []byte {
+//nolint:cyclop
+func txtDefault(val value.Value, fl flag.Flag) []byte {
 	var buf bytes.Buffer
 
 	buf.WriteString("<comment> [default: ")
 
 	switch {
-	case f.IsArray():
-		buf.WriteString(txtDefaultArray(v, f))
-	case f.IsInt():
-		buf.WriteString(strconv.Itoa(v.Int()))
-	case f.IsInt64():
-		buf.WriteString(strconv.FormatInt(v.Int64(), 10))
-	case f.IsUint():
-		buf.WriteString(strconv.FormatUint(uint64(v.Uint()), 10))
-	case f.IsUint64():
-		buf.WriteString(strconv.FormatUint(v.Uint64(), 10))
-	case f.IsFloat64():
-		buf.WriteString(strconv.FormatFloat(v.Float64(), 'g', -1, 64))
-	case f.IsDuration():
-		buf.WriteString(v.Duration().String())
-	case f.IsTime():
-		buf.WriteString(v.Time().Format(time.RFC3339))
-	case f.IsAny():
-		buf.WriteString(fmt.Sprint(v.Any()))
+	case fl.IsArray():
+		buf.WriteString(txtDefaultArray(val, fl))
+	case fl.IsInt():
+		buf.WriteString(strconv.Itoa(val.Int()))
+	case fl.IsInt64():
+		buf.WriteString(strconv.FormatInt(val.Int64(), 10))
+	case fl.IsUint():
+		buf.WriteString(strconv.FormatUint(uint64(val.Uint()), 10))
+	case fl.IsUint64():
+		buf.WriteString(strconv.FormatUint(val.Uint64(), 10))
+	case fl.IsFloat64():
+		buf.WriteString(strconv.FormatFloat(val.Float64(), 'g', -1, 64))
+	case fl.IsDuration():
+		buf.WriteString(val.Duration().String())
+	case fl.IsTime():
+		buf.WriteString(val.Time().Format(time.RFC3339))
+	case fl.IsAny():
+		buf.WriteString(fmt.Sprint(val.Any()))
 	default:
-		buf.WriteString(v.String())
+		buf.WriteString(val.String())
 	}
 
 	buf.WriteString("]</comment>")
@@ -214,7 +216,7 @@ func txtDefinitionOption(maxLen int, def *input.Definition) string {
 
 		if opt.HasShort() {
 			op.WriteString("-")
-			op.WriteString(opt.Short)
+			op.WriteString(opt.Alias)
 			op.WriteString(", ")
 		} else {
 			op.WriteString("    ")
@@ -354,18 +356,18 @@ func totalWidth(def *input.Definition) int {
 
 	for _, name := range def.Options() {
 		opt, _ := def.Option(name)
-		l := len(opt.Name) + 6
+		current := len(opt.Name) + 6
 
 		if !opt.IsBool() {
-			l = l*2 + 1
+			current = current*2 + 1
 		}
 
 		if opt.HasDefault() {
-			l += 2
+			current += 2
 		}
 
-		if l > max {
-			max = l
+		if current > max {
+			max = current
 		}
 	}
 

output/formatter/formatter.go

@@ -8,7 +8,6 @@ import (
 	"gitoa.ru/go-4devs/console/output/style"
 )
 
-//nolint: gochecknoglobals
 var re = regexp.MustCompile(`<(([a-z][^<>]+)|/([a-z][^<>]+)?)>`)
 
 func WithStyle(styles func(string) (style.Style, error)) func(*Formatter) {
@@ -18,15 +17,15 @@ func WithStyle(styles func(string) (style.Style, error)) func(*Formatter) {
 }
 
 func New(opts ...func(*Formatter)) *Formatter {
-	f := &Formatter{
+	formatter := &Formatter{
 		styles: style.Find,
 	}
 
 	for _, opt := range opts {
-		opt(f)
+		opt(formatter)
 	}
 
-	return f
+	return formatter
 }
 
 type Formatter struct {

output/formatter/formatter_test.go

@@ -8,6 +8,8 @@ import (
 )
 
 func TestFormatter(t *testing.T) {
+	t.Parallel()
+
 	ctx := context.Background()
 	formatter := formatter.New()
 

output/formatter/none_test.go

@@ -8,6 +8,8 @@ import (
 )
 
 func TestNone(t *testing.T) {
+	t.Parallel()
+
 	ctx := context.Background()
 	none := formatter.None()
 

output/output.go

@@ -63,15 +63,13 @@ func (o Output) Write(b []byte) (int, error) {
 }
 
 func (o Output) Writer(ctx context.Context, verb verbosity.Verbosity) io.Writer {
-	return verbosityWriter{ctx, o, verb}
+	return verbosityWriter(func(b []byte) (int, error) {
+		return o(ctx, verb, string(b))
+	})
 }
 
-type verbosityWriter struct {
-	ctx  context.Context
-	out  Output
-	verb verbosity.Verbosity
-}
+type verbosityWriter func(b []byte) (int, error)
 
 func (w verbosityWriter) Write(b []byte) (int, error) {
-	return w.out(w.ctx, w.verb, string(b))
+	return w(b)
 }

output/style/color.go

@@ -28,13 +28,13 @@ const (
 type Option string
 
 func (o Option) Apply(action int) string {
-	v := string(o)
+	out := string(o)
 
 	switch action {
 	case ActionSet:
-		return v[0:1]
+		return out[0:1]
 	case ActionUnset:
-		return v[1:]
+		return out[1:]
 	}
 
 	return ""

output/writer.go

@@ -41,6 +41,11 @@ func FormatString(_ verbosity.Verbosity, msg string, kv ...label.KeyValue) strin
 
 func New(w io.Writer, format func(verb verbosity.Verbosity, msg string, kv ...label.KeyValue) string) Output {
 	return func(ctx context.Context, verb verbosity.Verbosity, msg string, kv ...label.KeyValue) (int, error) {
-		return fmt.Fprint(w, format(verb, msg, kv...))
+		out, err := fmt.Fprint(w, format(verb, msg, kv...))
+		if err != nil {
+			return 0, fmt.Errorf("writer fprint:%w", err)
+		}
+
+		return out, nil
 	}
 }

output/writer_test.go

@@ -10,6 +10,8 @@ import (
 )
 
 func TestNew(t *testing.T) {
+	t.Parallel()
+
 	ctx := context.Background()
 	buf := bytes.Buffer{}
 	wr := output.New(&buf, output.FormatString)

register.go

@@ -27,24 +27,24 @@ var (
 	findCommand = regexp.MustCompile("([^:]+|)")
 )
 
-type ErrorAlternatives struct {
+type AlternativesError struct {
 	alt []string
 	err error
 }
 
-func (e ErrorAlternatives) Error() string {
+func (e AlternativesError) Error() string {
 	return fmt.Sprintf("%s, alternatives: [%s]", e.err, strings.Join(e.alt, ","))
 }
 
-func (e ErrorAlternatives) Is(err error) bool {
+func (e AlternativesError) Is(err error) bool {
 	return errors.Is(e.err, err)
 }
 
-func (e ErrorAlternatives) Unwrap() error {
+func (e AlternativesError) Unwrap() error {
 	return e.err
 }
 
-func (e ErrorAlternatives) Alternatives() []string {
+func (e AlternativesError) Alternatives() []string {
 	return e.alt
 }
 
@@ -115,7 +115,7 @@ func Find(name string) (*Command, error) {
 
 	cmdRegexp, err := regexp.Compile("^" + nameRegexp + "$")
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("find by regexp:%w", err)
 	}
 
 	for name := range commands {
@@ -134,7 +134,7 @@ func Find(name string) (*Command, error) {
 			names[i] = findCommands[i].Name
 		}
 
-		return nil, ErrorAlternatives{alt: names, err: ErrNotFound}
+		return nil, AlternativesError{alt: names, err: ErrNotFound}
 	}
 
 	return nil, ErrNotFound

register_test.go

@@ -7,6 +7,8 @@ import (
 )
 
 func TestFind(t *testing.T) {
+	t.Parallel()
+
 	cases := map[string]string{
 		"fdevs:console:test": "fdevs:console:test",
 		"fd:c:t":             "fdevs:console:test",
@@ -18,13 +20,13 @@ func TestFind(t *testing.T) {
 	for name, ex := range cases {
 		res, err := console.Find(name)
 		if err != nil {
-			t.Errorf("expect <nil> err, got:%s", err)
+			t.Errorf("%v expect <nil> err, got:%s", name, err)
 
 			continue
 		}
 
 		if res.Name != ex {
-			t.Errorf("expect: %s, got: %s", ex, res)
+			t.Errorf("%v expect: %s, got: %s", name, ex, res)
 		}
 	}
 }