Provide a json variable pointing to a configured json API

* All commands now using the same instance of json API
* `json` variable created in each package to prevent `encoding/json`
  from being re-introduced

Signed-off-by: Jhon Honce <jhonce@redhat.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/cmd/podman/registry/json.go b/cmd/podman/registry/json.go
new file mode 100644
index 000000000..f25406c3c
--- /dev/null
+++ b/cmd/podman/registry/json.go
@@ -0,0 +1,20 @@
+package registry
+
+import (
+	"sync"
+
+	jsoniter "github.com/json-iterator/go"
+)
+
+var (
+	json     jsoniter.API
+	jsonSync sync.Once
+)
+
+// JsonLibrary provides a "encoding/json" compatible API
+func JsonLibrary() jsoniter.API {
+	jsonSync.Do(func() {
+		json = jsoniter.ConfigCompatibleWithStandardLibrary
+	})
+	return json
+}