Function createWritableDirectory

extension/background.js:364–405

()

  };
})();
function createWritableDirectory() {
  // Returns a 'writable directory' object, which represents a
  // writable directory that users can put arbitrary stuff into. It's
  // not itself a route, but it has .routeForRoot and
  // .routeForFilename properties that are routes.
  
  const dir = {};
  return {
    directory: dir,
    routeForRoot: {
      async readdir({path}) {
        // get just last component of keys (filename)
        return { entries: [".", "..",
                           ...Object.keys(dir).map(
                             key => key.substr(key.lastIndexOf("/") + 1)
                           )] };
      },
      getattr() {
        return {
          st_mode: unix.S_IFDIR | 0777, // writable so you can create/rm evals
          st_nlink: 3,
          st_size: 0,
        };
      },
    },
    routeForFilename: {
      async mknod({path, mode}) {
        dir[path] = '';
        return {};
      },
      async unlink({path}) {
        delete dir[path];
        return {};
      },

      ...makeRouteWithContents(
        async ({path}) => dir[path],
        async ({path}, buf) => { dir[path] = buf; }
      )
    }
  };
}


(function() {