34 lines
703 B
Go
34 lines
703 B
Go
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package upnp
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import (
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"encoding/base64"
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"encoding/hex"
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"fmt"
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)
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// toBinary tries to convert v into a []byte.
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// - if v is []byte, returns it directly
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// - if v is string, attempts base64 decode, then hex decode
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func toBinary(v interface{}) ([]byte, error) {
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switch val := v.(type) {
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case []byte:
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return val, nil
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case string:
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// Try base64 first
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if data, err := base64.StdEncoding.DecodeString(val); err == nil {
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return data, nil
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}
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// Try hex next
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if data, err := hex.DecodeString(val); err == nil {
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return data, nil
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}
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return nil, fmt.Errorf("cannot parse string as base64 or hex: %q", val)
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default:
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return nil, fmt.Errorf("cannot convert type %T to binary", v)
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}
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}
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