32 lines
580 B
Go
32 lines
580 B
Go
package ingest
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import (
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"fmt"
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"io"
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"github.com/go-json-experiment/json/jsontext"
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)
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// NullableString is a string that decodes JSON null as the empty string.
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type NullableString string
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func (n *NullableString) UnmarshalJSONFrom(d *jsontext.Decoder) error {
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t, err := d.ReadToken()
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switch err {
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case nil: // do nothing
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case io.EOF:
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return io.ErrUnexpectedEOF
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default:
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return err
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}
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switch t.Kind() {
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case 'n':
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*n = ""
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case '"':
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*n = NullableString(t.String())
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default:
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return fmt.Errorf("invalid token for nullable string %q", t.String())
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}
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return nil
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}
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