bump dependencies

vendor/github.com/jesseduffield/go-getter/get_hg.go

@@ -0,0 +1,131 @@
+package getter
+
+import (
+	"fmt"
+	"net/url"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"runtime"
+
+	urlhelper "github.com/hashicorp/go-getter/helper/url"
+	"github.com/hashicorp/go-safetemp"
+)
+
+// HgGetter is a Getter implementation that will download a module from
+// a Mercurial repository.
+type HgGetter struct{}
+
+func (g *HgGetter) ClientMode(_ *url.URL) (ClientMode, error) {
+	return ClientModeDir, nil
+}
+
+func (g *HgGetter) Get(dst string, u *url.URL) error {
+	if _, err := exec.LookPath("hg"); err != nil {
+		return fmt.Errorf("hg must be available and on the PATH")
+	}
+
+	newURL, err := urlhelper.Parse(u.String())
+	if err != nil {
+		return err
+	}
+	if fixWindowsDrivePath(newURL) {
+		// See valid file path form on http://www.selenic.com/hg/help/urls
+		newURL.Path = fmt.Sprintf("/%s", newURL.Path)
+	}
+
+	// Extract some query parameters we use
+	var rev string
+	q := newURL.Query()
+	if len(q) > 0 {
+		rev = q.Get("rev")
+		q.Del("rev")
+
+		newURL.RawQuery = q.Encode()
+	}
+
+	_, err = os.Stat(dst)
+	if err != nil && !os.IsNotExist(err) {
+		return err
+	}
+	if err != nil {
+		if err := g.clone(dst, newURL); err != nil {
+			return err
+		}
+	}
+
+	if err := g.pull(dst, newURL); err != nil {
+		return err
+	}
+
+	return g.update(dst, newURL, rev)
+}
+
+// GetFile for Hg doesn't support updating at this time. It will download
+// the file every time.
+func (g *HgGetter) GetFile(dst string, u *url.URL) error {
+	// Create a temporary directory to store the full source. This has to be
+	// a non-existent directory.
+	td, tdcloser, err := safetemp.Dir("", "getter")
+	if err != nil {
+		return err
+	}
+	defer tdcloser.Close()
+
+	// Get the filename, and strip the filename from the URL so we can
+	// just get the repository directly.
+	filename := filepath.Base(u.Path)
+	u.Path = filepath.ToSlash(filepath.Dir(u.Path))
+
+	// If we're on Windows, we need to set the host to "localhost" for hg
+	if runtime.GOOS == "windows" {
+		u.Host = "localhost"
+	}
+
+	// Get the full repository
+	if err := g.Get(td, u); err != nil {
+		return err
+	}
+
+	// Copy the single file
+	u, err = urlhelper.Parse(fmtFileURL(filepath.Join(td, filename)))
+	if err != nil {
+		return err
+	}
+
+	fg := &FileGetter{Copy: true}
+	return fg.GetFile(dst, u)
+}
+
+func (g *HgGetter) clone(dst string, u *url.URL) error {
+	cmd := exec.Command("hg", "clone", "-U", u.String(), dst)
+	return getRunCommand(cmd)
+}
+
+func (g *HgGetter) pull(dst string, u *url.URL) error {
+	cmd := exec.Command("hg", "pull")
+	cmd.Dir = dst
+	return getRunCommand(cmd)
+}
+
+func (g *HgGetter) update(dst string, u *url.URL, rev string) error {
+	args := []string{"update"}
+	if rev != "" {
+		args = append(args, rev)
+	}
+
+	cmd := exec.Command("hg", args...)
+	cmd.Dir = dst
+	return getRunCommand(cmd)
+}
+
+func fixWindowsDrivePath(u *url.URL) bool {
+	// hg assumes a file:/// prefix for Windows drive letter file paths.
+	// (e.g. file:///c:/foo/bar)
+	// If the URL Path does not begin with a '/' character, the resulting URL
+	// path will have a file:// prefix. (e.g. file://c:/foo/bar)
+	// See http://www.selenic.com/hg/help/urls and the examples listed in
+	// http://selenic.com/repo/hg-stable/file/1265a3a71d75/mercurial/util.py#l1936
+	return runtime.GOOS == "windows" && u.Scheme == "file" &&
+		len(u.Path) > 1 && u.Path[0] != '/' && u.Path[1] == ':'
+}