refactor: split flat internal/ module into modules-per-cmd (#64)

internal/cmd/cli.go

@@ -0,0 +1,40 @@
+package cmd
+
+import (
+	"encoding/json"
+
+	"github.com/influxdata/influx-cli/v2/internal/config"
+	"github.com/influxdata/influx-cli/v2/internal/stdio"
+	"github.com/influxdata/influx-cli/v2/internal/tabwriter"
+)
+
+// CLI is a container for common functionality used to execute commands.
+type CLI struct {
+	StdIO stdio.StdIO
+
+	HideTableHeaders bool
+	PrintAsJSON      bool
+
+	ActiveConfig  config.Config
+	ConfigService config.Service
+}
+
+func (c *CLI) PrintJSON(v interface{}) error {
+	enc := json.NewEncoder(c.StdIO)
+	enc.SetIndent("", "\t")
+	return enc.Encode(v)
+}
+
+func (c *CLI) PrintTable(headers []string, rows ...map[string]interface{}) error {
+	w := tabwriter.NewTabWriter(c.StdIO, c.HideTableHeaders)
+	defer w.Flush()
+	if err := w.WriteHeaders(headers...); err != nil {
+		return err
+	}
+	for _, r := range rows {
+		if err := w.Write(r); err != nil {
+			return err
+		}
+	}
+	return nil
+}