mirror of
https://github.com/nalgeon/redka.git
synced 2025-10-23 16:03:09 +08:00
36 lines
731 B
Go
36 lines
731 B
Go
package key
|
|
|
|
import (
|
|
"github.com/nalgeon/redka/redsrv/internal/parser"
|
|
"github.com/nalgeon/redka/redsrv/internal/redis"
|
|
)
|
|
|
|
// Determines whether one or more keys exist.
|
|
// EXISTS key [key ...]
|
|
// https://redis.io/commands/exists
|
|
type Exists struct {
|
|
redis.BaseCmd
|
|
keys []string
|
|
}
|
|
|
|
func ParseExists(b redis.BaseCmd) (Exists, error) {
|
|
cmd := Exists{BaseCmd: b}
|
|
err := parser.New(
|
|
parser.Strings(&cmd.keys),
|
|
).Required(1).Run(cmd.Args())
|
|
if err != nil {
|
|
return Exists{}, err
|
|
}
|
|
return cmd, nil
|
|
}
|
|
|
|
func (cmd Exists) Run(w redis.Writer, red redis.Redka) (any, error) {
|
|
count, err := red.Key().Count(cmd.keys...)
|
|
if err != nil {
|
|
w.WriteError(cmd.Error(err))
|
|
return nil, err
|
|
}
|
|
w.WriteInt(count)
|
|
return count, nil
|
|
}
|