Initial commit

2026-09-18 23:37:19 +02:00
commit 0d45331f5c
135 changed files with 20651 additions and 0 deletions
@@ -0,0 +1,83 @@
+import fs from "node:fs";
+import path from "node:path";
+import sharp from "sharp";
+
+const PUBLIC_IMAGES_DIR = path.resolve(import.meta.dirname, "../public/images");
+const SUPPORTED_EXTENSIONS = new Set([".jpg", ".jpeg", ".png", ".webp", ".avif"]);
+const METADATA_FIELDS = ["exif", "icc", "iptc", "xmp"];
+const CHECK_ONLY = process.argv.includes("--check");
+
+function collectImages(directory) {
+  if (!fs.existsSync(directory)) return [];
+
+  const files = [];
+  for (const entry of fs.readdirSync(directory, { withFileTypes: true })) {
+    const fullPath = path.join(directory, entry.name);
+    if (entry.isDirectory()) {
+      files.push(...collectImages(fullPath));
+      continue;
+    }
+
+    if (entry.isFile() && SUPPORTED_EXTENSIONS.has(path.extname(entry.name).toLowerCase())) {
+      files.push(fullPath);
+    }
+  }
+  return files;
+}
+
+function getEncoder(pipeline, extension) {
+  if (extension === ".png") {
+    return pipeline.png({ compressionLevel: 9, adaptiveFiltering: true });
+  }
+  if (extension === ".webp") {
+    return pipeline.webp({ quality: 80 });
+  }
+  if (extension === ".avif") {
+    return pipeline.avif({ quality: 50 });
+  }
+  return pipeline.jpeg({ quality: 85, progressive: true, mozjpeg: true });
+}
+
+async function hasMetadata(filePath) {
+  const metadata = await sharp(filePath).metadata();
+  return METADATA_FIELDS.some((field) => Boolean(metadata[field]));
+}
+
+async function stripMetadata(filePath) {
+  const extension = path.extname(filePath).toLowerCase();
+  const tempPath = `${filePath}.tmp`;
+  if (fs.existsSync(tempPath)) {
+    fs.rmSync(tempPath);
+  }
+
+  const pipeline = sharp(filePath).rotate();
+  await getEncoder(pipeline, extension).toFile(tempPath);
+  fs.renameSync(tempPath, filePath);
+}
+
+const files = collectImages(PUBLIC_IMAGES_DIR);
+const filesWithMetadata = [];
+
+for (const file of files) {
+  if (await hasMetadata(file)) {
+    filesWithMetadata.push(file);
+  }
+}
+
+if (CHECK_ONLY) {
+  for (const file of filesWithMetadata) {
+    console.error(`[images:check-metadata] Metadata found: ${file}`);
+  }
+  if (filesWithMetadata.length > 0) {
+    process.exitCode = 1;
+  } else {
+    console.log(`[images:check-metadata] ${files.length} images checked; no metadata blocks found.`);
+  }
+} else {
+  for (const file of filesWithMetadata) {
+    await stripMetadata(file);
+  }
+  console.log(
+    `[images:strip-metadata] ${filesWithMetadata.length} of ${files.length} images rewritten.`,
+  );
+}