modularize build and file browser and add more precautions for downloading from file transfer.

2026-05-29 22:12:02 -05:00
parent 3102a00e8c
commit 329d1e2981
12 changed files with 1559 additions and 1103 deletions
@@ -0,0 +1,94 @@
+export function getFileExt(name = "") {
+  const idx = name.lastIndexOf(".");
+  if (idx < 0 || idx === name.length - 1) return "";
+  return name.slice(idx + 1).toLowerCase();
+}
+
+export const PREVIEW_IMAGE_EXTS = new Set(["jpg", "jpeg", "png", "gif", "webp", "bmp"]);
+export const PREVIEW_PDF_EXTS = new Set(["pdf"]);
+export const PREVIEW_MAX_BYTES = 50 * 1024 * 1024;
+
+export const KNOWN_BINARY_EXTS = new Set([
+  "mp4", "avi", "mkv", "mov", "wmv", "flv", "webm", "m4v",
+  "mp3", "wav", "flac", "ogg", "aac", "wma", "m4a",
+  "exe", "msi", "com", "app", "appimage",
+  "dll", "so", "dylib", "lib",
+  "zip", "rar", "7z", "tar", "gz", "bz2", "xz", "tgz",
+  "db", "sqlite", "sqlite3", "mdb",
+  "ttf", "otf", "woff", "woff2", "eot",
+  "iso", "img", "vhd", "vmdk",
+]);
+
+const IMAGE_MIME_MAP = {
+  jpg: "image/jpeg",
+  jpeg: "image/jpeg",
+  png: "image/png",
+  gif: "image/gif",
+  webp: "image/webp",
+  bmp: "image/bmp",
+};
+
+export function isPreviewable(name) {
+  const ext = getFileExt(name);
+  return PREVIEW_IMAGE_EXTS.has(ext) || PREVIEW_PDF_EXTS.has(ext);
+}
+
+export function getPreviewMimeType(name) {
+  const ext = getFileExt(name);
+  if (PREVIEW_PDF_EXTS.has(ext)) return "application/pdf";
+  return IMAGE_MIME_MAP[ext] || null;
+}
+
+export function shouldShowParentDirectory(path) {
+  if (!path || path === ".") {
+    return false;
+  }
+
+  return true;
+}
+
+export function getParentPath(path) {
+  const normalized = path.replace(/\\/g, "/");
+  const parts = normalized.split("/").filter((p) => p);
+
+  if (parts.length === 1 && parts[0].match(/^[A-Za-z]:$/)) {
+    return ".";
+  }
+
+  if (parts.length <= 1) {
+    return ".";
+  }
+
+  parts.pop();
+  let parentPath = parts.join("/");
+
+  if (parentPath.match(/^[A-Za-z]:?$/)) {
+    return parentPath.replace(/^([A-Za-z]):?$/, "$1:\\");
+  }
+
+  return parentPath || ".";
+}
+
+export function formatBytes(bytes) {
+  if (bytes === 0 || bytes === 0n) return "0 B";
+  const sizes = ["B", "KB", "MB", "GB", "TB"];
+  if (typeof bytes === "bigint") {
+    const k = 1024n;
+    let i = 0;
+    let value = bytes;
+    while (value >= k && i < sizes.length - 1) {
+      value /= k;
+      i += 1;
+    }
+    return `${value.toString()} ${sizes[i]}`;
+  }
+  const k = 1024;
+  const i = Math.floor(Math.log(bytes) / Math.log(k));
+  return Math.round((bytes / Math.pow(k, i)) * 100) / 100 + " " + sizes[i];
+}
+
+export function escapeHtml(text) {
+  const div = document.createElement("div");
+  div.textContent = text;
+  return div.innerHTML;
+}