Modify input format to newline

Signed-off-by: divyansh42 <diagrawa@redhat.com>

README.md

@@ -74,7 +74,8 @@ Refer to the [`podman push`](http://docs.podman.io/en/latest/markdown/podman-man
   <tr>
     <td>extra-args</td>
     <td>No</td>
-    <td>Extra args to be passed to push command when pushing image.</td>
+    <td>Extra args to be passed to podman push.
+      Separate arguments by newline. Do not use quotes.</td>
   </tr>
 
 </table>

action.yml

@@ -32,7 +32,9 @@ inputs:
       The contents of this file are the digest output.
     required: false
   extra-args:
-    description: 'Extra args to be passed to push command when pushing image'
+    description: | 
+      Extra args to be passed to podman push.
+      Separate arguments by newline. Do not use quotes - @actions/exec will do the quoting for you.
     required: false
   
 outputs:

src/index.ts

@@ -3,6 +3,7 @@ import * as exec from "@actions/exec";
 import * as io from "@actions/io";
 import * as fs from "fs";
 import * as path from "path";
+import { splitByNewline } from "./util";
 
 interface ExecResult {
     exitCode: number;
@@ -43,7 +44,15 @@ async function run(): Promise<void> {
     const password = core.getInput("password", { required: true });
     const tlsVerify = core.getInput("tls-verify");
     const digestFileInput = core.getInput("digestfile");
-    const extraArgs = core.getInput("extra-args");
+
+    const inputExtraArgsStr = core.getInput("extra-args");
+    let podmanExtraArgs: string[] = [];
+    if (inputExtraArgsStr) {
+        // transform the array of lines into an array of arguments
+        // by splitting over lines, then over spaces, then trimming.
+        const lines = splitByNewline(inputExtraArgsStr);
+        podmanExtraArgs = lines.flatMap((line) => line.split(" ")).map((arg) => arg.trim());
+    }
 
     imageToPush = `${imageInput}`;
     const registryPathList: string[] = [];
@@ -160,8 +169,8 @@ async function run(): Promise<void> {
             registryPath,
         ];
 
-        if (extraArgs) {
-            args.push(extraArgs);
+        if (podmanExtraArgs.length > 0) {
+            args.push(...podmanExtraArgs);
         }
 
         // check if tls-verify is not set to null

src/util.ts

@@ -0,0 +1,8 @@
+/***************************************************************************************************
+ *  Copyright (c) Red Hat, Inc. All rights reserved.
+ *  Licensed under the MIT License. See LICENSE file in the project root for license information.
+ **************************************************************************************************/
+
+export function splitByNewline(s: string): string[] {
+    return s.split(/\r?\n/);
+}