Add manifest feature (#85)

* Add manifest feature

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

src/utils.ts

@@ -65,24 +65,50 @@ export function splitByNewline(s: string): string[] {
     return s.split(/\r?\n/);
 }
 
-export function getArch(): string {
-    // 'arch' should be used over 'archs', see https://github.com/redhat-actions/buildah-build/issues/60
-    const archs = core.getInput(Inputs.ARCHS);
+export function getArch(): string[] {
+    const archs = getCommaSeperatedInput(Inputs.ARCHS);
+
     const arch = core.getInput(Inputs.ARCH);
 
-    if (arch && archs) {
+    if (arch && archs.length > 0) {
         core.warning(
             `Both "${Inputs.ARCH}" and "${Inputs.ARCHS}" inputs are set. `
-            + `Please use only one of these two inputs, as they are aliases of one another. `
-            + `"${Inputs.ARCH}" takes precedence.`
+            + `Please use "${Inputs.ARCH}" if you want to provide multiple `
+            + `ARCH else use ${Inputs.ARCH}". "${Inputs.ARCHS}" takes preference.`
         );
     }
 
-    return arch || archs;
+    if (archs.length > 0) {
+        return archs;
+    }
+    else if (arch) {
+        return [ arch ];
+    }
+    return [];
 }
 
-export function getPlatform(): string {
-    return core.getInput(Inputs.PLATFORM);
+export function getPlatform(): string[] {
+    const platform = core.getInput(Inputs.PLATFORM);
+    const platforms = getCommaSeperatedInput(Inputs.PLATFORMS);
+
+    if (platform && platforms.length > 0) {
+        core.warning(
+            `Both "${Inputs.PLATFORM}" and "${Inputs.PLATFORMS}" inputs are set. `
+            + `Please use "${Inputs.PLATFORMS}" if you want to provide multiple `
+            + `PLATFORM else use ${Inputs.PLATFORM}". "${Inputs.PLATFORMS}" takes preference.`
+        );
+    }
+
+    if (platforms.length > 0) {
+        core.debug("return platforms");
+        return platforms;
+    }
+    else if (platform) {
+        core.debug("return platform");
+        return [ platform ];
+    }
+    core.debug("return empty");
+    return [];
 }
 
 export function getContainerfiles(): string[] {
@@ -115,6 +141,20 @@ export function getInputList(name: string): string[] {
         );
 }
 
+export function getCommaSeperatedInput(name: string): string[] {
+    const items = core.getInput(name);
+    if (items.length === 0) {
+        core.debug("empty");
+        return [];
+    }
+    const splitItems = items.split(",");
+    return splitItems
+        .reduce<string[]>(
+            (acc, line) => acc.concat(line).map((item) => item.trim()),
+            [],
+        );
+}
+
 export function isFullImageName(image: string): boolean {
     return image.indexOf(":") > 0;
 }
@@ -125,3 +165,7 @@ export function getFullImageName(image: string, tag: string): string {
     }
     return `${image}:${tag}`;
 }
+
+export function removeIllegalCharacters(item: string): string {
+    return item.replace(/[^a-zA-Z0-9 ]/g, "");
+}