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package download
import (
"fmt"
"io"
"io/ioutil"
"net/http"
)
// FromURL downloads the specified source to a file in tmpdir (OS defaults if
// empty).
func FromURL(tmpdir, source string) (string, error) {
tmp, err := ioutil.TempFile(tmpdir, "")
if err != nil {
return "", fmt.Errorf("creating temporary download file: %w", err)
}
defer tmp.Close()
response, err := http.Get(source) // nolint:noctx
if err != nil {
return "", fmt.Errorf("downloading %s: %w", source, err)
}
defer response.Body.Close()
_, err = io.Copy(tmp, response.Body)
if err != nil {
return "", fmt.Errorf("copying %s to %s: %w", source, tmp.Name(), err)
}
return tmp.Name(), nil
}
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