💝 A general purpose WithCommand option.

.github/workflows/go.yml

@@ -6,6 +6,9 @@ on:
   pull_request:
     types: [opened, synchronize, reopened]
 
+env:
+  FORCE_COLOR: true
+
 jobs:
 
   build:
@@ -14,20 +17,19 @@ jobs:
     strategy:
       matrix:
         go-version:
-          - '1.18'
+          - '1.22'
+          - '1.23'
     steps:
 
       - name: Set up Go ${{ matrix.go-version }}
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v5
         with:
           go-version: ${{ matrix.go-version }}
         id: go
 
       - name: Check out code into the Go module directory
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Test
-        run: go run gotest.tools/gotestsum@v1.8.0 --format testname --
+        run: go run gotest.tools/gotestsum@v1.12.0 --format testname --
           -race -count=1 -short ./...
-        env:
-          FORCE_COLOR: true

.golangci.yaml

@@ -0,0 +1,39 @@
+run:
+  timeout: 5m
+
+linters:
+  disable-all: false
+  presets:
+    - bugs
+    - unused
+    - complexity
+    - format
+    - performance
+    - style
+  enable:
+    - gci
+  disable:
+    - paralleltest
+    - nlreturn
+    - exhaustivestruct
+    - wsl
+    - godox
+    - scopelint
+    - maligned
+    - interfacer
+    - golint
+    - ireturn
+    - varnamelen
+    - exhaustruct
+    - depguard
+
+issues:
+  exclude-rules:
+    - path: _test\.go
+      linters:
+        - wrapcheck
+
+linters-settings:
+  gomoddirectives:
+    # List of allowed `replace` directives. Default is empty.
+    replace-allow-list: []

types.go → app.go

@@ -2,7 +2,6 @@ package commandline
 
 import (
 	"errors"
-	"io"
 	"os"
 
 	"github.com/spf13/cobra"
@@ -24,9 +23,6 @@ type CobraProvider interface {
 	Command() *cobra.Command
 }
 
-// Option is used to configure an App.
-type Option func(*App)
-
 // New creates a new App from CobraProvider.
 func New(cp CobraProvider) *App {
 	return &App{
@@ -42,35 +38,6 @@ func (a *App) ExecuteOrDie(options ...Option) {
 	}
 }
 
-// WithArgs creates an option which sets args.
-func WithArgs(args ...string) Option {
-	return func(app *App) {
-		app.root.SetArgs(args)
-	}
-}
-
-// WithInput creates an option witch sets os.Stdin.
-func WithInput(in io.Reader) Option {
-	return func(app *App) {
-		app.root.SetIn(in)
-	}
-}
-
-// WithOutput creates an option witch sets os.Stdout and os.Stderr.
-func WithOutput(out io.Writer) Option {
-	return func(app *App) {
-		app.root.SetOut(out)
-		app.root.SetErr(out)
-	}
-}
-
-// WithExit creates an option which sets the exit function.
-func WithExit(fn func(code int)) Option {
-	return func(app *App) {
-		app.Exit = fn
-	}
-}
-
 // Execute will execute the application with the provided options and return
 // error if any.
 func (a *App) Execute(options ...Option) error {

types_test.go → app_test.go

@@ -3,7 +3,7 @@ package commandline_test
 import (
 	"bytes"
 	"errors"
-	"io/ioutil"
+	"io"
 	"testing"
 
 	"github.com/spf13/cobra"
@@ -15,9 +15,11 @@ func TestExecuteOrDie(t *testing.T) {
 	var buf bytes.Buffer
 	var retcode int
 	commandline.New(new(testApp)).ExecuteOrDie(
-		commandline.WithOutput(&buf),
-		commandline.WithInput(bytes.NewBufferString("Input")),
-		commandline.WithArgs("arg1", "arg2"),
+		commandline.WithCommand(func(cmd *cobra.Command) {
+			cmd.SetOut(&buf)
+			cmd.SetIn(bytes.NewBufferString("Input"))
+			cmd.SetArgs([]string{"arg1", "arg2"})
+		}),
 		commandline.WithExit(func(code int) {
 			retcode = code
 		}),
@@ -46,7 +48,7 @@ func (t testApp) Command() *cobra.Command {
 		SilenceUsage:  true,
 		SilenceErrors: true,
 		RunE: func(cmd *cobra.Command, args []string) error {
-			in, err := ioutil.ReadAll(cmd.InOrStdin())
+			in, err := io.ReadAll(cmd.InOrStdin())
 			if err != nil {
 				return err
 			}

go.mod

@@ -1,15 +1,15 @@
 module github.com/wavesoftware/go-commandline
 
-go 1.18
+go 1.22.0
 
 require (
-	github.com/spf13/cobra v1.5.0
+	github.com/spf13/cobra v1.8.1
 	github.com/wavesoftware/go-retcode v1.0.0
-	gotest.tools/v3 v3.3.0
+	gotest.tools/v3 v3.5.1
 )
 
 require (
-	github.com/google/go-cmp v0.5.5 // indirect
-	github.com/inconshreveable/mousetrap v1.0.0 // indirect
+	github.com/google/go-cmp v0.6.0 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 )

go.sum

@@ -1,11 +1,20 @@
 github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
+github.com/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
 github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
+github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
+github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
+github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
+github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/spf13/cobra v1.5.0 h1:X+jTBEBqF0bHN+9cSMgmfuvv2VHJ9ezmFNf9Y/XstYU=
 github.com/spf13/cobra v1.5.0/go.mod h1:dWXEIy2H428czQCjInthrTRUg7yKbok+2Qi/yBIJoUM=
+github.com/spf13/cobra v1.8.1 h1:e5/vxKd/rZsfSJMUX1agtjeTDf+qv1/JdBF8gg5k9ZM=
+github.com/spf13/cobra v1.8.1/go.mod h1:wHxEcudfqmLYa8iTfL+OuZPbBZkmvliBWKIezN3kD9Y=
 github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
 github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
@@ -37,5 +46,8 @@ golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1N
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gotest.tools/v3 v3.3.0 h1:MfDY1b1/0xN1CyMlQDac0ziEy9zJQd9CXBRRDHw2jJo=
 gotest.tools/v3 v3.3.0/go.mod h1:Mcr9QNxkg0uMvy/YElmo4SpXgJKWgQvYrT7Kw5RzJ1A=
+gotest.tools/v3 v3.5.1 h1:EENdUnS3pdur5nybKYIh2Vfgc8IUNBjxDPSjtiJcOzU=
+gotest.tools/v3 v3.5.1/go.mod h1:isy3WKz7GK6uNw/sbHzfKBLvlvXwUyV06n6brMxxopU=

options.go

@@ -0,0 +1,49 @@
+package commandline
+
+import (
+	"io"
+
+	"github.com/spf13/cobra"
+)
+
+// Option is used to configure an App.
+type Option func(*App)
+
+// WithArgs creates an option which sets args.
+// Deprecated: use WithCommand instead.
+func WithArgs(args ...string) Option {
+	return WithCommand(func(cmd *cobra.Command) {
+		cmd.SetArgs(args)
+	})
+}
+
+// WithInput creates an option witch sets os.Stdin.
+// Deprecated: use WithCommand instead.
+func WithInput(in io.Reader) Option {
+	return WithCommand(func(cmd *cobra.Command) {
+		cmd.SetIn(in)
+	})
+}
+
+// WithOutput creates an option witch sets os.Stdout and os.Stderr.
+// Deprecated: use WithCommand instead.
+func WithOutput(out io.Writer) Option {
+	return WithCommand(func(cmd *cobra.Command) {
+		cmd.SetOut(out)
+		cmd.SetErr(out)
+	})
+}
+
+// WithCommand will allow one to change the cobra.Command.
+func WithCommand(fn func(cmd *cobra.Command)) Option {
+	return func(app *App) {
+		fn(app.root)
+	}
+}
+
+// WithExit creates an option which sets the exit function.
+func WithExit(fn func(code int)) Option {
+	return func(app *App) {
+		app.Exit = fn
+	}
+}

test/cmd/main_test.go

@@ -4,11 +4,11 @@ import (
 	"bytes"
 	"testing"
 
+	"github.com/spf13/cobra"
+	"github.com/wavesoftware/go-commandline"
 	main "github.com/wavesoftware/go-commandline/test/cmd"
 	"github.com/wavesoftware/go-commandline/test/internal/cli"
 	"gotest.tools/v3/assert"
-
-	"github.com/wavesoftware/go-commandline"
 )
 
 func TestTheMain(t *testing.T) {
@@ -26,7 +26,9 @@ type state struct {
 
 func (s *state) opts() []commandline.Option {
 	return []commandline.Option{
-		commandline.WithOutput(&s.out),
+		commandline.WithCommand(func(cmd *cobra.Command) {
+			cmd.SetOut(&s.out)
+		}),
 		commandline.WithExit(func(code int) {
 			s.exitCode = code
 		}),

test/internal/cli/app.go

@@ -6,14 +6,14 @@ import (
 )
 
 // Opts is the list of commandline options to pass to the main function.
-var Opts []commandline.Option
+var Opts []commandline.Option //nolint:gochecknoglobals
 
 type App struct{}
 
 func (a App) Command() *cobra.Command {
 	return &cobra.Command{
 		Use: "example",
-		Run: func(cmd *cobra.Command, args []string) {
+		Run: func(cmd *cobra.Command, _ []string) {
 			cmd.Println("Hello, world!")
 		},
 	}