HORIZON PROJECT

/* global Blob File */

/*

 * Module requirements.

 */

var isArray = require('isarray');

var toString = Object.prototype.toString;

var withNativeBlob = typeof global.Blob === 'function' || toString.call(global.Blob) === '[object BlobConstructor]';

var withNativeFile = typeof global.File === 'function' || toString.call(global.File) === '[object FileConstructor]';

/**

 * Module exports.

 */

module.exports = hasBinary;

/**

 * Checks for binary data.

 *

 * Supports Buffer, ArrayBuffer, Blob and File.

 *

 * @param {Object} anything

 * @api public

 */

function hasBinary (obj) {

  if (!obj || typeof obj !== 'object') {

    return false;

  }

  if (isArray(obj)) {

    for (var i = 0, l = obj.length; i < l; i++) {

      if (hasBinary(obj[i])) {

        return true;

      }

    }

    return false;

  }

  if ((typeof global.Buffer === 'function' && global.Buffer.isBuffer && global.Buffer.isBuffer(obj)) ||

     (typeof global.ArrayBuffer === 'function' && obj instanceof ArrayBuffer) ||

     (withNativeBlob && obj instanceof Blob) ||

     (withNativeFile && obj instanceof File)

    ) {

    return true;

  }

  // see: https://github.com/Automattic/has-binary/pull/4

  if (obj.toJSON && typeof obj.toJSON === 'function' && arguments.length === 1) {

    return hasBinary(obj.toJSON(), true);

  }

  for (var key in obj) {

    if (Object.prototype.hasOwnProperty.call(obj, key) && hasBinary(obj[key])) {

      return true;

    }

  }

  return false;

}