@infinito/id3/lib/get.tagbuf.js

ID3 Tag Reader/Writer

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = getTagBuffer;

var _fs = _interopRequireDefault(require("fs"));

var _constants = require("./constants.js");

var _valid = _interopRequireDefault(require("./valid.js"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function getTagBuffer(path) {
  if (typeof path != "string") {
    throw new TypeError('parameter path must be a string');
  }

  if (!_fs.default.existsSync(path)) {
    throw new Error("".concat(path, " not found"));
  }

  var fd = _fs.default.openSync(path, 'r');

  var buf = new Uint8Array(_constants.constants.ID3_HEADER_LENGTH_BYTES);

  if (_fs.default.readSync(fd, buf, 0, _constants.constants.ID3_HEADER_LENGTH_BYTES, 0) != _constants.constants.ID3_HEADER_LENGTH_BYTES) {
    throw new Error('fs.readSync failed');
  }

  var tagInfo = (0, _valid.default)(buf.buffer);
  buf = new Uint8Array(tagInfo.size + _constants.constants.ID3_HEADER_LENGTH_BYTES);

  if (_fs.default.readSync(fd, buf, 0, tagInfo.size + _constants.constants.ID3_HEADER_LENGTH_BYTES, 0) != tagInfo.size + _constants.constants.ID3_HEADER_LENGTH_BYTES) {
    throw new Error('fs.readSync failed');
  }

  return buf;
}