refactor: use Deno API for gzip file handling

gzip/gzip_file.ts

@@ -1,31 +1,61 @@
+// import { readAll, writeAll } from "../deps.ts";
 /** very fast */
-import { gunzip, gzip } from "../zlib/mod.ts";
+// import { gunzip, gzip } from "../zlib/mod.ts";
 /** slow */
 // import { gzip, gunzip } from "./gzip.ts";
-import { readAll, writeAll } from "../deps.ts";
 
+/**
+ * Compress a file
+ * @param src Source file path
+ * @param dest Destination file path
+ */
 export async function gzipFile(src: string, dest: string): Promise<void> {
-  const reader = await Deno.open(src, {
-    read: true,
-  });
-  const writer = await Deno.open(dest, {
-    write: true,
-    create: true,
-    truncate: true,
-  });
-  await writeAll(writer, gzip(await readAll(reader), undefined));
-  writer.close();
-  reader.close();
+  // v0.0.1 - v0.4.9
+  // const reader = await Deno.open(src, {
+  //   read: true,
+  // });
+  // const writer = await Deno.open(dest, {
+  //   write: true,
+  //   create: true,
+  //   truncate: true,
+  // });
+  // await writeAll(writer, gzip(await readAll(reader), undefined));
+  // writer.close();
+  // reader.close();
+
+  // >= v0.5.0
+  const input = await Deno.open(src);
+  const output = await Deno.create(dest);
+
+  await input.readable
+    .pipeThrough(new DecompressionStream("gzip"))
+    .pipeTo(output.writable);
 }
 
+/**
+ * Decompress a file
+ * @param src Source file path
+ * @param dest Destination file path
+ */
 export async function gunzipFile(src: string, dest: string): Promise<void> {
-  const reader = await Deno.open(src, {
-    read: true,
-  });
-  const writer = await Deno.open(dest, {
-    write: true,
-    create: true,
-    truncate: true,
-  });
-  await writeAll(writer, gunzip(await readAll(reader)));
+  // v0.0.1 - v0.4.9
+  // const reader = await Deno.open(src, {
+  //   read: true,
+  // });
+  // const writer = await Deno.open(dest, {
+  //   write: true,
+  //   create: true,
+  //   truncate: true,
+  // });
+  // await writeAll(writer, gunzip(await readAll(reader)));
+
+  // >= v0.5.0
+  const input = await Deno.open(src);
+  const output = await Deno.create(dest);
+
+  await input.readable
+    .pipeThrough(new CompressionStream("gzip"))
+    .pipeTo(output.writable);
 }
+
+await gzipFile("./a.txt","an.txt.gz")