refactor cmd/config to internal

cmd/config/internal/commands/fmt.go

@@ -0,0 +1,93 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package commands
+
+import (
+	"github.com/spf13/cobra"
+	"sigs.k8s.io/kustomize/cmd/config/internal/generateddocs/commands"
+	"sigs.k8s.io/kustomize/kyaml/kio"
+	"sigs.k8s.io/kustomize/kyaml/kio/filters"
+)
+
+// FmtCmd returns a command FmtRunner.
+func GetFmtRunner(name string) *FmtRunner {
+	r := &FmtRunner{}
+	c := &cobra.Command{
+		Use:     "fmt",
+		Short:   commands.FmtShort,
+		Long:    commands.FmtLong,
+		Example: commands.FmtExamples,
+		RunE:    r.runE,
+		PreRunE: r.preRunE,
+	}
+	fixDocs(name, c)
+	c.Flags().StringVar(&r.FilenamePattern, "pattern", filters.DefaultFilenamePattern,
+		`pattern to use for generating filenames for resources -- may contain the following
+formatting substitution verbs {'%n': 'metadata.name', '%s': 'metadata.namespace', '%k': 'kind'}`)
+	c.Flags().BoolVar(&r.SetFilenames, "set-filenames", false,
+		`if true, set default filenames on Resources without them`)
+	c.Flags().BoolVar(&r.KeepAnnotations, "keep-annotations", false,
+		`if true, keep index and filename annotations set on Resources.`)
+	c.Flags().BoolVar(&r.Override, "override", false,
+		`if true, override existing filepath annotations.`)
+	r.Command = c
+	return r
+}
+
+func FmtCommand(name string) *cobra.Command {
+	return GetFmtRunner(name).Command
+}
+
+// FmtRunner contains the run function
+type FmtRunner struct {
+	Command         *cobra.Command
+	FilenamePattern string
+	SetFilenames    bool
+	KeepAnnotations bool
+	Override        bool
+}
+
+func (r *FmtRunner) preRunE(c *cobra.Command, args []string) error {
+	if r.SetFilenames {
+		r.KeepAnnotations = true
+	}
+	return nil
+}
+
+func (r *FmtRunner) runE(c *cobra.Command, args []string) error {
+	f := []kio.Filter{filters.FormatFilter{}}
+
+	// format with file names
+	if r.SetFilenames {
+		f = append(f, &filters.FileSetter{
+			FilenamePattern: r.FilenamePattern,
+			Override:        r.Override,
+		})
+	}
+
+	// format stdin if there are no args
+	if len(args) == 0 {
+		rw := &kio.ByteReadWriter{
+			Reader:                c.InOrStdin(),
+			Writer:                c.OutOrStdout(),
+			KeepReaderAnnotations: r.KeepAnnotations,
+		}
+		return handleError(c, kio.Pipeline{
+			Inputs: []kio.Reader{rw}, Filters: f, Outputs: []kio.Writer{rw}}.Execute())
+	}
+
+	for i := range args {
+		path := args[i]
+		rw := &kio.LocalPackageReadWriter{
+			NoDeleteFiles:         true,
+			PackagePath:           path,
+			KeepReaderAnnotations: r.KeepAnnotations}
+		err := kio.Pipeline{
+			Inputs: []kio.Reader{rw}, Filters: f, Outputs: []kio.Writer{rw}}.Execute()
+		if err != nil {
+			return handleError(c, err)
+		}
+	}
+	return nil
+}