Handle incomplete container path

If the given oci path does not match a file, the value is treated
as a glob pattern. From the possible match of the pattern the
last match will be used as the file to load. This Fixes #51

doc/flake-ctl-podman-load.rst

@@ -21,7 +21,10 @@ SYNOPSIS
 DESCRIPTION
 -----------
 
-Load the given OCI image into the local registry.
+Load the given OCI image into the local registry. If the provided
+file path cannot be found and attempt is made to match the image using
+the provided path as the base for a glob. If multiple images match the
+glob the highest image in alpha numerical order will be loaded.
 The command is based on **podman load**. After completion
 the container can be listed via:
 

flake-ctl/src/cli.rs

@@ -198,6 +198,9 @@ pub enum Podman {
     /// Load container
     Load {
         /// OCI image to load into local podman registry
+        /// used as the base of a glob if the given image path
+        /// is not found. Load the highest, in alpha numerical order
+        /// image if there is a match
         #[clap(long)]
         oci: String,
     },

flake-ctl/src/podman.rs

@@ -26,6 +26,7 @@ use std::fs;
 use std::env;
 use std::path::Path;
 use std::process::Command;
+use glob::glob;
 use crate::defaults;
 use crate::{app, app_config};
 use flakes::container::Container;
@@ -74,13 +75,23 @@ pub fn load(oci: &String) -> i32 {
     /*!
     Call podman load with the provided oci tar file
     !*/
+    let mut container_archive: String = oci.to_string();
+
     info!("Loading OCI image...");
-    info!("podman load -i {}", oci);
-
+    if !Path::new(oci).exists() {
+        let container_archives = oci.to_owned() + "*";
+        // glob puts things in alpha sorted order which is expected to give
+        // us the highest version of the archive
+        for entry in glob(&container_archives)
+            .expect("Failed to read glob pattern").flatten() {
+                    container_archive = entry.display().to_string()
+            }
+        }
+    info!("podman load -i {}", container_archive);
     let mut call = setup_podman_call("any");
     call.arg("load")
         .arg("-i")
-        .arg(oci);
+        .arg(container_archive);
     let status = match call.status() {
         Ok(status) => {
             if status.success() {