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38 lines
804 B
Go
38 lines
804 B
Go
package set
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import (
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"github.com/nalgeon/redka/internal/parser"
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"github.com/nalgeon/redka/internal/redis"
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)
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// Stores the difference of multiple sets in a key.
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// SDIFFSTORE destination key [key ...]
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// https://redis.io/commands/sdiffstore
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type SDiffStore struct {
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redis.BaseCmd
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dest string
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keys []string
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}
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func ParseSDiffStore(b redis.BaseCmd) (*SDiffStore, error) {
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cmd := &SDiffStore{BaseCmd: b}
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err := parser.New(
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parser.String(&cmd.dest),
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parser.Strings(&cmd.keys),
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).Required(2).Run(cmd.Args())
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if err != nil {
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return nil, err
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}
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return cmd, nil
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}
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func (cmd *SDiffStore) Run(w redis.Writer, red redis.Redka) (any, error) {
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n, err := red.Set().DiffStore(cmd.dest, cmd.keys...)
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if err != nil {
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w.WriteError(cmd.Error(err))
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return nil, err
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}
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w.WriteInt(n)
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return n, nil
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}
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