40 lines
800 B
Go
40 lines
800 B
Go
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package module
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import (
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"fmt"
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"net/url"
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"os"
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"os/exec"
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)
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// GitGetter is a Getter implementation that will download a module from
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// a git repository.
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type GitGetter struct{}
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func (g *GitGetter) Get(dst string, u *url.URL) error {
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if _, err := exec.LookPath("git"); err != nil {
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return fmt.Errorf("git must be available and on the PATH")
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}
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_, err := os.Stat(dst)
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if err != nil && !os.IsNotExist(err) {
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return err
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}
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if err == nil {
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return g.update(dst, u)
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}
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return g.clone(dst, u)
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}
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func (g *GitGetter) clone(dst string, u *url.URL) error {
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cmd := exec.Command("git", "clone", u.String(), dst)
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return getRunCommand(cmd)
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}
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func (g *GitGetter) update(dst string, u *url.URL) error {
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cmd := exec.Command("git", "pull", "--ff-only")
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cmd.Dir = dst
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return getRunCommand(cmd)
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}
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