Allow multiple files (#140)

Co-authored-by: CrazyMax <crazy-max@users.noreply.github.com>

src/context.ts

@@ -0,0 +1,42 @@
+import * as glob from 'glob';
+import {lstatSync} from 'fs';
+import * as core from '@actions/core';
+
+export interface Inputs {
+  version: string;
+  files: string[];
+  args: string;
+}
+
+export async function getInputs(): Promise<Inputs> {
+  return {
+    version: core.getInput('version') || 'latest',
+    files: getInputList(core.getInput('files') || core.getInput('file'), true),
+    args: core.getInput('args')
+  };
+}
+
+export function getInputList(items: string, ignoreComma?: boolean): string[] {
+  if (items == '') {
+    return [];
+  }
+  return items
+    .split(/\r?\n/)
+    .filter(x => x)
+    .reduce<string[]>(
+      (acc, line) => acc.concat(!ignoreComma ? line.split(',').filter(x => x) : line).map(pat => pat.trim()),
+      []
+    );
+}
+
+export const asyncForEach = async (array, callback) => {
+  for (let index = 0; index < array.length; index++) {
+    await callback(array[index], index, array);
+  }
+};
+
+export const resolvePaths = (patterns: string[]): string[] => {
+  return patterns.reduce((acc: string[], pattern: string): string[] => {
+    return acc.concat(glob.sync(pattern).filter(path => lstatSync(path).isFile()));
+  }, []);
+};