Initial import of wrapper-validation-action

sources/src/wrapper-validation/find.ts

@@ -0,0 +1,27 @@
+import * as util from 'util'
+import * as path from 'path'
+import * as fs from 'fs'
+import unhomoglyph from 'unhomoglyph'
+
+const readdir = util.promisify(fs.readdir)
+
+export async function findWrapperJars(baseDir: string): Promise<string[]> {
+    const files = await recursivelyListFiles(baseDir)
+    return files
+        .filter(file => unhomoglyph(file).endsWith('gradle-wrapper.jar'))
+        .map(wrapperJar => path.relative(baseDir, wrapperJar))
+        .sort((a, b) => a.localeCompare(b))
+}
+
+async function recursivelyListFiles(baseDir: string): Promise<string[]> {
+    const childrenNames = await readdir(baseDir)
+    const childrenPaths = await Promise.all(
+        childrenNames.map(async childName => {
+            const childPath = path.resolve(baseDir, childName)
+            return fs.lstatSync(childPath).isDirectory()
+                ? recursivelyListFiles(childPath)
+                : new Promise(resolve => resolve([childPath]))
+        })
+    )
+    return Array.prototype.concat(...childrenPaths)
+}