phase 1

scripts/clean_csv.ts

@@ -0,0 +1,29 @@
+import { readFile, writeFile } from "node:fs/promises";
+
+async function cleanCsv() {
+  const filePath = "measure.csv";
+  try {
+    const content = await readFile(filePath, "utf-8");
+    const lines = content.split("\n");
+    if (lines.length === 0) return;
+
+    const cleanedLines = lines.map(line => {
+      if (!line.trim()) return "";
+      
+      // Basic CSV split (Note: does not handle quoted commas, 
+      // but based on our previous read, the columns we need are early and simple)
+      const cols = line.split(",");
+      
+      // Indices: 상수(1), songno(3), diff(4) -> 0-based: 1, 3, 4
+      const selected = [cols[1], cols[3], cols[4]];
+      return selected.join(",");
+    }).filter(line => line !== "");
+
+    await writeFile(filePath, cleanedLines.join("\n"));
+    console.log("measure.csv cleaned successfully.");
+  } catch (error) {
+    console.error("Error cleaning CSV:", error);
+  }
+}
+
+cleanCsv();