gotools/cmd/yamltool/yamltool.go

package main

import (
	yaml "github.com/goccy/go-yaml"
	"github.com/spf13/cobra"
)

var VERBOSITY = 3
var SYMMETRIC_DIFF = false

type TypeId int

const (
	Map TypeId = iota
	Slice
	Scalar
)

func Type(elem any) TypeId {
	switch elem.(type) {
	case yaml.MapSlice:
		return Map
	case []any:
		return Slice
	default:
		return Scalar
	}
}

func main() {

	cmd := &cobra.Command{
		Use:   "yamltool",
		Short: "Shows one-way difference between yaml files",
		Long: `
Shows the changes in <file2> compared to <file1>`,
	}

	diff := &cobra.Command{
		Use:   "diff [file1] [file2]",
		Short: "Shows one-way difference between yaml files",
		Long: `
Shows the additions and modifications in <file2> compared to <file1>`,
		RunE: func(cmd *cobra.Command, args []string) error {
			return diff(cmd, args)
		},
	}
	cmd.AddCommand(diff)

	merge := &cobra.Command{
		Use:   "merge [file1] ... [fileN]",
		Short: "Merge yaml files.",
		Long:  `Changes will be merged into the first file, so later files override earlier ones`,
		RunE: func(cmd *cobra.Command, args []string) error {
			return merge(cmd, args)
		},
	}
	cmd.AddCommand(merge)

	diff.PersistentFlags().IntVarP(&VERBOSITY, "array-output-level",
		"v", 3, `Array output level: ,
	0: no output, only exit status,
	1: only show changed/added values, 
	2: show identical as <UNMODIFIED>, 
	3: show all values`)
	diff.Flags().BoolVarP(&SYMMETRIC_DIFF, "symmetric-diff",
		"s", false, `Symmetric difference, compare in both directions`)

	cmd.Execute()
}