48 lines
1.0 KiB
Go
48 lines
1.0 KiB
Go
![]() |
package utils
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import (
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"fmt"
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"io/ioutil"
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"net/http"
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"os/exec"
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"strings"
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"github.com/docker/docker/pkg/urlutil"
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)
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func GitClone(remoteURL string) (string, error) {
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if !urlutil.IsGitTransport(remoteURL) {
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remoteURL = "https://" + remoteURL
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}
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root, err := ioutil.TempDir("", "docker-build-git")
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if err != nil {
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return "", err
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}
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clone := cloneArgs(remoteURL, root)
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if output, err := exec.Command("git", clone...).CombinedOutput(); err != nil {
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return "", fmt.Errorf("Error trying to use git: %s (%s)", err, output)
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}
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return root, nil
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}
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func cloneArgs(remoteURL, root string) []string {
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args := []string{"clone", "--recursive"}
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shallow := true
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if strings.HasPrefix(remoteURL, "http") {
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res, err := http.Head(fmt.Sprintf("%s/info/refs?service=git-upload-pack", remoteURL))
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if err != nil || res.Header.Get("Content-Type") != "application/x-git-upload-pack-advertisement" {
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shallow = false
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}
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}
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if shallow {
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args = append(args, "--depth", "1")
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}
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return append(args, remoteURL, root)
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}
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