87 lines
1.6 KiB
Go
87 lines
1.6 KiB
Go
package download
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import (
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"archive/tar"
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"compress/gzip"
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"fmt"
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"io"
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"io/ioutil"
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"log"
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"net/http"
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"os"
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"runtime"
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"strings"
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"github.com/pkg/errors"
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)
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var (
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_downloadURL = "https://github.com/gohugoio/hugo/releases/download/v%s/hugo_%s_Linux-%s.tar.gz"
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)
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func downloadURL(version string) string {
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var archType string
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switch runtime.GOARCH {
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case "amd64":
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archType = "64bit"
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case "arm64":
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archType = "arm64"
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case "arm":
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archType = "arm"
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case "386":
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archType = "32bit"
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default:
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archType = "unsupported"
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}
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return fmt.Sprintf(_downloadURL, version, version, archType)
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}
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func getTempFile() (string, io.WriteCloser, error) {
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d, err := ioutil.TempDir("", "")
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if err != nil {
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return "", nil, errors.Wrap(err, "")
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}
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f, err := ioutil.TempFile(d, "")
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return f.Name(), f, err
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}
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// Get will download the specified hugo verion
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func Get(version string) (string, error) {
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resp, err := http.Get(downloadURL(version))
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if err != nil {
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return "", errors.Wrap(err, "")
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}
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defer resp.Body.Close()
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gz, err := gzip.NewReader(resp.Body)
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if err != nil {
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return "", errors.Wrap(err, "")
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}
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defer gz.Close()
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targz := tar.NewReader(gz)
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hugoPath, hugoBin, err := getTempFile()
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if err != nil {
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log.Printf("ERROR: %s", err)
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return "", errors.Wrap(err, "")
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}
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defer hugoBin.Close()
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for {
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h, err := targz.Next()
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if err == io.EOF {
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return "", errors.New("no hugo binary found")
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}
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if err != nil {
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return "", errors.Wrap(err, "")
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}
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if strings.HasSuffix(h.Name, "hugo") {
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io.Copy(hugoBin, targz)
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if err := os.Chmod(hugoPath, 0755); err != nil {
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log.Fatal(err)
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}
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return hugoPath, nil
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}
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}
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}
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