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package openai
import (
"fmt"
"io"
"mime/multipart"
"os"
"path"
)
type FormBuilder interface {
CreateFormFile(fieldname string, file *os.File) error
CreateFormFileReader(fieldname string, r io.Reader, filename string) error
WriteField(fieldname, value string) error
Close() error
FormDataContentType() string
}
type DefaultFormBuilder struct {
writer *multipart.Writer
}
func NewFormBuilder(body io.Writer) *DefaultFormBuilder {
return &DefaultFormBuilder{
writer: multipart.NewWriter(body),
}
}
func (fb *DefaultFormBuilder) CreateFormFile(fieldname string, file *os.File) error {
return fb.createFormFile(fieldname, file, file.Name())
}
func (fb *DefaultFormBuilder) CreateFormFileReader(fieldname string, r io.Reader, filename string) error {
return fb.createFormFile(fieldname, r, path.Base(filename))
}
func (fb *DefaultFormBuilder) createFormFile(fieldname string, r io.Reader, filename string) error {
if filename == "" {
return fmt.Errorf("filename cannot be empty")
}
fieldWriter, err := fb.writer.CreateFormFile(fieldname, filename)
if err != nil {
return err
}
_, err = io.Copy(fieldWriter, r)
if err != nil {
return err
}
return nil
}
func (fb *DefaultFormBuilder) WriteField(fieldname, value string) error {
return fb.writer.WriteField(fieldname, value)
}
func (fb *DefaultFormBuilder) Close() error {
return fb.writer.Close()
}
func (fb *DefaultFormBuilder) FormDataContentType() string {
return fb.writer.FormDataContentType()
}
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