manually add dependency on go-getter

vendor/github.com/hashicorp/go-getter/source.go

@@ -0,0 +1,62 @@
+package getter
+
+import (
+	"fmt"
+	"path/filepath"
+	"strings"
+)
+
+// SourceDirSubdir takes a source and returns a tuple of the URL without
+// the subdir and the URL with the subdir.
+func SourceDirSubdir(src string) (string, string) {
+	// Calcaulate an offset to avoid accidentally marking the scheme
+	// as the dir.
+	var offset int
+	if idx := strings.Index(src, "://"); idx > -1 {
+		offset = idx + 3
+	}
+
+	// First see if we even have an explicit subdir
+	idx := strings.Index(src[offset:], "//")
+	if idx == -1 {
+		return src, ""
+	}
+
+	idx += offset
+	subdir := src[idx+2:]
+	src = src[:idx]
+
+	// Next, check if we have query parameters and push them onto the
+	// URL.
+	if idx = strings.Index(subdir, "?"); idx > -1 {
+		query := subdir[idx:]
+		subdir = subdir[:idx]
+		src += query
+	}
+
+	return src, subdir
+}
+
+// SubdirGlob returns the actual subdir with globbing processed.
+//
+// dst should be a destination directory that is already populated (the
+// download is complete) and subDir should be the set subDir. If subDir
+// is an empty string, this returns an empty string.
+//
+// The returned path is the full absolute path.
+func SubdirGlob(dst, subDir string) (string, error) {
+	matches, err := filepath.Glob(filepath.Join(dst, subDir))
+	if err != nil {
+		return "", err
+	}
+
+	if len(matches) == 0 {
+		return "", fmt.Errorf("subdir %q not found", subDir)
+	}
+
+	if len(matches) > 1 {
+		return "", fmt.Errorf("subdir %q matches multiple paths", subDir)
+	}
+
+	return matches[0], nil
+}