Alessandro RosandGitHub
e7b811fdc0
this allows to check whether a new version is available without upgrading.
44 lines
685 B
Go
44 lines
685 B
Go
package upgrade
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import (
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"archive/zip"
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"bytes"
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"fmt"
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"io"
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)
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const extension = "zip"
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func extractExecutable(r io.Reader) ([]byte, error) {
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data, err := io.ReadAll(r)
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if err != nil {
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return nil, err
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}
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zipReader, err := zip.NewReader(bytes.NewReader(data), int64(len(data)))
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if err != nil {
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return nil, err
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}
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for _, file := range zipReader.File {
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if file.Name == executable+".exe" {
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var rc io.ReadCloser
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rc, err = file.Open()
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if err != nil {
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return nil, err
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}
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defer rc.Close()
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var buf []byte
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buf, err = io.ReadAll(rc)
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if err != nil {
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return nil, err
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}
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return buf, nil
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}
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}
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return nil, fmt.Errorf("executable not found")
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}
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