feat(del): support for multi deletion

README.md

@@ -123,14 +123,21 @@ pda mv name name2 --copy
 
 <p align="center"></p><!-- spacer -->
 
-`pda del` to delete a key.
+`pda del` to delete one or more keys.
 ```bash
 pda del kitty
-# Are you sure you want to delete kitty? [y/N]
+# remove  "kitty": are you sure? [y/n]
+# y
+
+pda del kitty dog@animals
+# remove "kitty", "dog@animals": are you sure? [y/n]
 # y
 
 # Or skip the prompt.
 pda del kitty --force
+
+# Delete many in one go.
+pda del kitty dogs cats --force
 ```
 
 <p align="center"></p><!-- spacer -->

cmd/del.go

@@ -32,10 +32,10 @@ import (
 
 // delCmd represents the set command
 var delCmd = &cobra.Command{
-	Use:          "del KEY[@DB]",
+	Use:          "del KEY[@DB] [KEY[@DB] ...]",
-	Short:        "Delete a key. Optionally specify a db.",
+	Short:        "Delete one or more keys. Optionally specify a db.",
 	Aliases:      []string{"delete", "rm", "remove"},
-	Args:         cobra.ExactArgs(1),
+	Args:         cobra.MinimumNArgs(1),
 	RunE:         del,
 	SilenceUsage: true,
 }
@@ -48,22 +48,29 @@ func del(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	exists, err := keyExists(store, args[0])
+	targetKeys := make([]string, 0, len(args))
+	for _, arg := range args {
+		exists, err := keyExists(store, arg)
 		if err != nil {
-		return fmt.Errorf("cannot remove '%s': %v", args[0], err)
+			return fmt.Errorf("cannot remove '%s': %v", arg, err)
 		}
 		if !exists {
-		return fmt.Errorf("cannot remove '%s': No such key", args[0])
+			return fmt.Errorf("cannot remove '%s': No such key", arg)
 		}
-
+		targetKey, err := formatKeyForPrompt(store, arg)
-	targetKey, err := formatKeyForPrompt(store, args[0])
 		if err != nil {
 			return err
 		}
+		targetKeys = append(targetKeys, targetKey)
+	}
 
 	if !force {
 		var confirm string
-		message := fmt.Sprintf("remove %q: are you sure? (y/n)", targetKey)
+		quotedTargets := make([]string, 0, len(targetKeys))
+		for _, t := range targetKeys {
+			quotedTargets = append(quotedTargets, fmt.Sprintf("%q", t))
+		}
+		message := fmt.Sprintf("remove %s: are you sure? (y/n)", strings.Join(quotedTargets, ", "))
 		fmt.Println(message)
 		if _, err := fmt.Scanln(&confirm); err != nil {
 			return fmt.Errorf("cannot remove '%s': %v", args[0], err)
@@ -73,22 +80,29 @@ func del(cmd *cobra.Command, args []string) error {
 		}
 	}
 
+	for _, arg := range args {
+		arg := arg
 		trans := TransactionArgs{
-		key:      args[0],
+			key:      arg,
 			readonly: false,
 			sync:     false,
 			transact: func(tx *badger.Txn, k []byte) error {
 				if err := tx.Delete(k); errors.Is(err, badger.ErrKeyNotFound) {
-				return fmt.Errorf("cannot remove '%s': No such key", args[0])
+					return fmt.Errorf("cannot remove '%s': No such key", arg)
 				}
 				if err != nil {
-				return fmt.Errorf("cannot remove '%s': %v", args[0], err)
+					return fmt.Errorf("cannot remove '%s': %v", arg, err)
 				}
 				return nil
 			},
 		}
 
-	return store.Transaction(trans)
+		if err := store.Transaction(trans); err != nil {
+			return err
+		}
+	}
+
+	return nil
 }
 
 func init() {

testdata/del__multiple__ok.ct

@@ -0,0 +1,7 @@
+$ pda set a 1
+$ pda set b 2
+$ pda del a b --force
+$ pda get a --> FAIL
+Error: cannot get 'a': Key not found
+$ pda get b --> FAIL
+Error: cannot get 'b': Key not found

testdata/help__del__ok.ct

@@ -1,9 +1,9 @@
 $ pda help del
 $ pda del --help
-Delete a key. Optionally specify a db.
+Delete one or more keys. Optionally specify a db.
 
 Usage:
-  pda del KEY[@DB] [flags]
+  pda del KEY[@DB] [KEY[@DB] ...] [flags]
 
 Aliases:
   del, delete, rm, remove
@@ -11,10 +11,10 @@ Aliases:
 Flags:
   -f, --force   Force delete without confirmation
   -h, --help    help for del
-Delete a key. Optionally specify a db.
+Delete one or more keys. Optionally specify a db.
 
 Usage:
-  pda del KEY[@DB] [flags]
+  pda del KEY[@DB] [KEY[@DB] ...] [flags]
 
 Aliases:
   del, delete, rm, remove

testdata/help__ok.ct

@@ -15,7 +15,7 @@ Usage:
 Available Commands:
   completion  Generate the autocompletion script for the specified shell
   cp          Make a copy of a key.
-  del         Delete a key. Optionally specify a db.
+  del         Delete one or more keys. Optionally specify a db.
   del-db      Delete a database.
   dump        Dump all key/value pairs as NDJSON
   get         Get a value for a key. Optionally specify a db.
@@ -46,7 +46,7 @@ Usage:
 Available Commands:
   completion  Generate the autocompletion script for the specified shell
   cp          Make a copy of a key.
-  del         Delete a key. Optionally specify a db.
+  del         Delete one or more keys. Optionally specify a db.
   del-db      Delete a database.
   dump        Dump all key/value pairs as NDJSON
   get         Get a value for a key. Optionally specify a db.

testdata/root__ok.ct

@@ -14,7 +14,7 @@ Usage:
 Available Commands:
   completion  Generate the autocompletion script for the specified shell
   cp          Make a copy of a key.
-  del         Delete a key. Optionally specify a db.
+  del         Delete one or more keys. Optionally specify a db.
   del-db      Delete a database.
   dump        Dump all key/value pairs as NDJSON
   get         Get a value for a key. Optionally specify a db.