50 lines
1.4 KiB
Go
50 lines
1.4 KiB
Go
package generatedtext
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io"
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"strings"
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)
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func decodeGeneratedText[T any](data []byte, name string) (T, error) {
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var value T
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decoder := json.NewDecoder(bytes.NewReader(data))
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decoder.DisallowUnknownFields()
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if err := decoder.Decode(&value); err != nil {
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return value, fmt.Errorf("decode %s generated text: %w", name, err)
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}
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var extra any
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if err := decoder.Decode(&extra); err != nil {
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if err != io.EOF {
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return value, fmt.Errorf("decode %s generated text: %w", name, err)
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}
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return value, nil
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}
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return value, fmt.Errorf("decode %s generated text: multiple JSON values", name)
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}
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func requireGeneratedTextStringField(data []byte, name, field string) error {
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var fields map[string]json.RawMessage
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if err := json.Unmarshal(data, &fields); err != nil {
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return fmt.Errorf("decode %s generated text: %w", name, err)
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}
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raw, ok := fields[field]
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if !ok {
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return fmt.Errorf("%s generated text %s is required", name, strings.ReplaceAll(field, "_", " "))
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}
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if bytes.Equal(bytes.TrimSpace(raw), []byte("null")) {
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return fmt.Errorf("%s generated text %s must be a string", name, strings.ReplaceAll(field, "_", " "))
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}
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return nil
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}
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func normalizeGeneratedText[T any](value T, name string) ([]byte, error) {
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normalized, err := json.Marshal(value)
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if err != nil {
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return nil, fmt.Errorf("normalize %s generated text: %w", name, err)
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}
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return normalized, nil
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}
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