commit 435b00ca251d68b77ebb975c6b6323193783a71f
Author: Kuba Orlik <kontatk@kuba-orlik.name>
Date:   Fri Oct 1 22:02:49 2021 +0200

    Initial commit

diff --git a/measure-drift.mjs b/measure-drift.mjs
new file mode 100755
index 0000000..1ac979a
--- /dev/null
+++ b/measure-drift.mjs
@@ -0,0 +1,60 @@
+#!/usr/bin/zx
+
+const label_file_path = process.argv.slice(-1)[0];
+
+const labels = (await $`cat ${label_file_path}`).stdout
+  .split("\n")
+  .filter((e) => e != "")
+  .map((l) => l.split("\t"))
+  .map(([start, stop, label]) => {
+    const suffix = label.match(/-[^-]+$/)[0];
+    const filename = label.replace(suffix, "");
+    return {
+      time: parseFloat(start),
+      label,
+      filename,
+      suffix: suffix.slice(1),
+    };
+  })
+  .reduce((acc, element) => {
+    if (!acc[element.filename]) {
+      acc[element.filename] = {
+        labels: {},
+      };
+    }
+    acc[element.filename].labels[element.suffix] = element.time;
+    return acc;
+  }, {});
+
+console.log(labels);
+
+for (let filename in labels) {
+  const filelabels = labels[filename].labels;
+  for (const suffix of ["A", "B"]) {
+    const duration =
+      filelabels[`end${suffix}`] - filelabels[`start${suffix}`] || null;
+    const key = `duration[${suffix}]`;
+    labels[filename][key] = duration;
+  }
+}
+
+for (let filename1 in labels) {
+  for (let filename2 in labels) {
+    if (filename1 === filename2) {
+      continue;
+    }
+    for (const suffix of ["A", "B"]) {
+      const key = `duration[${suffix}]`;
+
+      if (labels[filename1][key] && labels[filename2][key]) {
+        console.log(
+          filename1,
+          "/",
+          filename2,
+          labels[filename1][key] / labels[filename2][key]
+        );
+        break;
+      }
+    }
+  }
+}