q/gedcom_formatter.go
package q
import (
"fmt"
"io"
"reflect"
"github.com/elliotchance/gedcom/v39"
)
type GEDCOMFormatter struct {
Writer io.Writer
}
func (f *GEDCOMFormatter) Write(result interface{}) error {
// Nil should be treated as a blank document.
if gedcom.IsNil(result) {
return nil
}
t := reflect.ValueOf(result)
if t.Kind() == reflect.Slice {
for i := 0; i < t.Len(); i++ {
err := f.Write(t.Index(i).Interface())
if err != nil {
return err
}
}
return nil
}
if x, ok := result.(gedcom.GEDCOMStringer); ok {
f.Writer.Write([]byte(x.GEDCOMString(0)))
return nil
}
return fmt.Errorf("%s does not implement gedcom.GEDCOMStringer", t.Type())
}