container runlabel NAME implementation

when using container runlabel, if a --name is not provided, we must
deduce the container name from the base name of the image to maintain
parity with the atomic cli.

fixed small bug where we split the cmd on " " rather than using fields could
lead to extra spaces in command output.

Signed-off-by: baude <bbaude@redhat.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/libpod/image/parts.go b/libpod/image/parts.go
index 1509005e5..9adf26fb9 100644
--- a/libpod/image/parts.go
+++ b/libpod/image/parts.go
@@ -22,6 +22,18 @@ func isRegistry(name string) bool {
 	return strings.ContainsAny(name, ".:") || name == "localhost"
 }
 
+// GetImageBaseName uses decompose and string splits to obtain the base
+// name of an image.  Doing this here because it beats changing the
+// imageParts struct names to be exported as well.
+func GetImageBaseName(input string) (string, error) {
+	decomposedImage, err := decompose(input)
+	if err != nil {
+		return "", err
+	}
+	splitImageName := strings.Split(decomposedImage.name, "/")
+	return splitImageName[len(splitImageName)-1], nil
+}
+
 // decompose breaks an input name into an imageParts description
 func decompose(input string) (imageParts, error) {
 	var (