Initial transfer of provider code

[github/fretlink/terraform-provider-statuscake.git] / vendor / github.com / hashicorp / go-getter / get_hg.go

diff --git a/vendor/github.com/hashicorp/go-getter/get_hg.go b/vendor/github.com/hashicorp/go-getter/get_hg.go
new file mode 100644 (file)
index 0000000..820bdd4
--- /dev/null
+++ b/vendor/github.com/hashicorp/go-getter/get_hg.go
@@ -0,0 +1,131 @@
+package getter
+
+import (
+       "fmt"
+       "io/ioutil"
+       "net/url"
+       "os"
+       "os/exec"
+       "path/filepath"
+       "runtime"
+
+       urlhelper "github.com/hashicorp/go-getter/helper/url"
+)
+
+// 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 {
+       td, err := ioutil.TempDir("", "getter-hg")
+       if err != nil {
+               return err
+       }
+       if err := os.RemoveAll(td); err != nil {
+               return err
+       }
+
+       // 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] == ':'
+}