Merge deno_std in main repo (#3091)

The history of deno_std is persevered but rewritten to update links to issues and PRs

Fixes denoland/deno_std#603

2 files changed, 48 insertions, 0 deletions

diff --git a/std b/std
deleted file mode 160000
-Subproject 43aafbf33285753e7b42230f0eb7969b300f71c
diff --git a/std/fs/empty_dir.ts b/std/fs/empty_dir.ts
new file mode 100644
index 000000000..81bc45839
--- /dev/null
+++ b/std/fs/empty_dir.ts
@@ -0,0 +1,48 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+/**
+ * Ensures that a directory is empty.
+ * Deletes directory contents if the directory is not empty.
+ * If the directory does not exist, it is created.
+ * The directory itself is not deleted.
+ */
+export async function emptyDir(dir: string): Promise<void> {
+  let items: Deno.FileInfo[] = [];
+  try {
+    items = await Deno.readDir(dir);
+  } catch {
+    // if not exist. then create it
+    await Deno.mkdir(dir, true);
+    return;
+  }
+  while (items.length) {
+    const item = items.shift();
+    if (item && item.name) {
+      const fn = dir + "/" + item.name;
+      await Deno.remove(fn, { recursive: true });
+    }
+  }
+}
+
+/**
+ * Ensures that a directory is empty.
+ * Deletes directory contents if the directory is not empty.
+ * If the directory does not exist, it is created.
+ * The directory itself is not deleted.
+ */
+export function emptyDirSync(dir: string): void {
+  let items: Deno.FileInfo[] = [];
+  try {
+    items = Deno.readDirSync(dir);
+  } catch {
+    // if not exist. then create it
+    Deno.mkdirSync(dir, true);
+    return;
+  }
+  while (items.length) {
+    const item = items.shift();
+    if (item && item.name) {
+      const fn = dir + "/" + item.name;
+      Deno.removeSync(fn, { recursive: true });
+    }
+  }
+}