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27 lines
721 B
Go
27 lines
721 B
Go
package decoders
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import (
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"errors"
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"github.com/wader/fq/pkg/scalar"
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"github.com/wader/fq/format/avro/schema"
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"github.com/wader/fq/pkg/decode"
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)
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func decodeFixedFn(schema schema.SimplifiedSchema, sms ...scalar.Mapper) (DecodeFn, error) {
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if schema.Size < 0 {
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return nil, errors.New("fixed size must be greater than or equal to zero")
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}
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size := int64(schema.Size)
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// Fixed instances are encoded using the number of bytes declared in the schema.
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return func(name string, d *decode.D) interface{} {
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r := d.FieldRawLen(name, size*8, sms...)
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val := make([]byte, size)
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if _, err := r.ReadBits(val, size*8); err != nil {
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d.Fatalf("failed to read fixed %s value: %v", name, err)
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}
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return val
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}, nil
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}
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