taglib-wasm/dist/src/utils/file.js

TagLib-Wasm is the universal tagging library for TypeScript/JavaScript platforms: Browsers, Node.js, Deno, Bun, Cloudflare Workers, and Electron apps

import { EnvironmentError, FileOperationError } from "../errors.js";
import { getPlatformIO } from "../runtime/platform-io.js";
async function readFileData(file) {
  if (file instanceof Uint8Array) return file;
  if (file instanceof ArrayBuffer) return new Uint8Array(file);
  if (typeof File !== "undefined" && file instanceof File) {
    return new Uint8Array(await file.arrayBuffer());
  }
  if (typeof file === "string") {
    try {
      return await getPlatformIO().readFile(file);
    } catch (error) {
      if (error instanceof EnvironmentError) throw error;
      throw new FileOperationError("read", error.message, file);
    }
  }
  const inputType = Object.prototype.toString.call(file);
  throw new FileOperationError(
    "read",
    `Invalid file input type: ${inputType}. Expected string path, Uint8Array, ArrayBuffer, or File object.`
  );
}
async function getFileSize(path) {
  try {
    const s = await getPlatformIO().stat(path);
    return s.size;
  } catch (error) {
    if (error instanceof EnvironmentError) throw error;
    throw new FileOperationError("stat", error.message, path);
  }
}
async function readPartialFileData(path, headerSize, footerSize) {
  const io = getPlatformIO();
  if (!io.readPartial) {
    throw new EnvironmentError(
      "current runtime",
      "does not support partial file reading",
      "filesystem access with seek support"
    );
  }
  try {
    return await io.readPartial(path, headerSize, footerSize);
  } catch (error) {
    if (error instanceof EnvironmentError) throw error;
    throw new FileOperationError("read", error.message, path);
  }
}
export {
  getFileSize,
  readFileData,
  readPartialFileData
};