Add registry name to fields returned by varlink image search

Cockpit team wants to list the registry name where the image was
found.

Also fix up SearchImages code to check if the user specified a registry
in his call to use that rather then all the registries, This matches
podman search command.

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/pkg/registries/registries.go b/pkg/registries/registries.go
index cbb8b730c..9f4c94533 100644
--- a/pkg/registries/registries.go
+++ b/pkg/registries/registries.go
@@ -3,10 +3,12 @@ package registries
 import (
 	"os"
 	"path/filepath"
+	"strings"
 
 	"github.com/containers/image/pkg/sysregistries"
 	"github.com/containers/image/types"
 	"github.com/containers/libpod/pkg/rootless"
+	"github.com/docker/distribution/reference"
 	"github.com/pkg/errors"
 )
 
@@ -49,3 +51,17 @@ func GetInsecureRegistries() ([]string, error) {
 	}
 	return registries, nil
 }
+
+// GetRegistry returns the registry name from a string if specified
+func GetRegistry(image string) (string, error) {
+	// It is possible to only have the registry name in the format "myregistry/"
+	// if so, just trim the "/" from the end and return the registry name
+	if strings.HasSuffix(image, "/") {
+		return strings.TrimSuffix(image, "/"), nil
+	}
+	imgRef, err := reference.Parse(image)
+	if err != nil {
+		return "", err
+	}
+	return reference.Domain(imgRef.(reference.Named)), nil
+}