before merging in essential fixes.

cmd/yamltool/yamltool.go

@@ -0,0 +1,70 @@
+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)
+
+	cmd.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()
+}