add list command, fix set command

cmd/maincommands.go

@@ -2,10 +2,12 @@ package cmd
 
 import (
 	"errors"
+	"os"
 
 	"github.com/spf13/cobra"
 	"github.com/tlinden/anydb/app"
 	"github.com/tlinden/anydb/cfg"
+	"github.com/tlinden/anydb/output"
 )
 
 func Set(conf *cfg.Config) *cobra.Command {
@@ -52,7 +54,37 @@ func Del(conf *cfg.Config) *cobra.Command {
 }
 
 func List(conf *cfg.Config) *cobra.Command {
-	return nil
+	var (
+		attr app.DbAttr
+	)
+
+	var cmd = &cobra.Command{
+		Use:   "list [-t <tag>] [-o <mode>] [<filter-regex>]",
+		Short: "List database contents",
+		Long:  `List database contents`,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			// errors at this stage do not cause the usage to be shown
+			cmd.SilenceUsage = true
+
+			if len(args) > 0 {
+				attr.Args = args
+			}
+
+			entries, err := conf.DB.List(&attr)
+			if err != nil {
+				return err
+			}
+
+			output.List(os.Stdout, conf, entries)
+
+			return conf.DB.Close()
+		},
+	}
+
+	cmd.PersistentFlags().StringVarP(&conf.Mode, "output-mode", "o", "", "output mode: wide, yaml, json, table")
+	cmd.PersistentFlags().StringArrayVarP(&attr.Tags, "tags", "t", nil, "tags, multiple allowed")
+
+	return cmd
 }
 
 func Find(conf *cfg.Config) *cobra.Command {