From e9af92c00fd48d5ec2bbf9d6cfb1720a0784197a Mon Sep 17 00:00:00 2001
From: Charlotte Som <charlotte@som.codes>
Date: Fri, 29 Nov 2024 06:26:41 +0000
Subject: [PATCH] rename scan.ts to scan-from-raw.ts and give it a simple cli
 for byteoffset

---
 scan.ts => scan-from-raw.ts | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)
 rename scan.ts => scan-from-raw.ts (64%)

diff --git a/scan.ts b/scan-from-raw.ts
similarity index 64%
rename from scan.ts
rename to scan-from-raw.ts
index aad2b5e..3eb0ca4 100644
--- a/scan.ts
+++ b/scan-from-raw.ts
@@ -2,18 +2,18 @@ import { TextLineStream } from "jsr:@std/streams@1/text-line-stream";
 import { ExportEntry } from "./directory-tailer.ts";
 import { tailer } from "./main.ts";
 
-export const fullScan = async () => {
+export const fullScan = async (fromByteOffset?: number) => {
   using exports = await Deno.open("./data/exports.jsonl", { read: true });
 
-  // interrupted at 2024-11-12T21:33:47.118Z
-  // byte offset
-  await exports.seek(13526812085, Deno.SeekMode.Start);
+  if (fromByteOffset) {
+    await exports.seek(fromByteOffset, Deno.SeekMode.Start);
+  }
 
   const lineStream = exports.readable
     .pipeThrough(new TextDecoderStream())
     .pipeThrough(new TextLineStream());
 
-  {
+  if (fromByteOffset) {
     const reader = lineStream.getReader();
     const line = await reader.read();
     console.log("dropping: " + line.value);
@@ -26,4 +26,11 @@ export const fullScan = async () => {
   }
 };
 
-await fullScan();
+if (import.meta.main) {
+  const fromByteOffsetStr = Deno.args.at(0);
+  const fromByteOffset = fromByteOffsetStr
+    ? parseInt(fromByteOffsetStr)
+    : undefined;
+
+  await fullScan(fromByteOffset);
+}