refactor: Rewrote in golang.

cmd/list.go

@@ -0,0 +1,69 @@
+package cmd
+
+import (
+	"encoding/json"
+	"os"
+	"path/filepath"
+
+	"github.com/mattn/go-isatty"
+	"github.com/olekukonko/tablewriter"
+	"github.com/sbrow/envr/app"
+	"github.com/spf13/cobra"
+)
+
+type listEntry struct {
+	Directory string `json:"directory"`
+	Path      string `json:"path"`
+}
+
+var listCmd = &cobra.Command{
+	Use:   "list",
+	Short: "View your tracked files",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		db, err := app.Open()
+		if err != nil {
+			return err
+		}
+		defer db.Close(app.ReadOnly)
+
+		rows, err := db.List()
+		if err != nil {
+			return err
+		}
+
+		if isatty.IsTerminal(os.Stdout.Fd()) {
+			table := tablewriter.NewWriter(os.Stdout)
+			table.Header([]string{"Directory", "Path"})
+
+			for _, row := range rows {
+				path, err := filepath.Rel(row.Dir, row.Path)
+				if err != nil {
+					return err
+				}
+				table.Append([]string{row.Dir + "/", path})
+			}
+			table.Render()
+		} else {
+			var entries []listEntry
+			for _, row := range rows {
+				path, err := filepath.Rel(row.Dir, row.Path)
+				if err != nil {
+					return err
+				}
+				entries = append(entries, listEntry{
+					Directory: row.Dir + "/",
+					Path:      path,
+				})
+			}
+
+			encoder := json.NewEncoder(os.Stdout)
+			return encoder.Encode(entries)
+		}
+
+		return nil
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(listCmd)
+}