The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/toolkit/components/osfile/modules/osfile_native.jsm	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,70 @@
     1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
     1.6 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.7 +
     1.8 +/**
     1.9 + * Native (xpcom) implementation of key OS.File functions
    1.10 + */
    1.11 +
    1.12 +"use strict";
    1.13 +
    1.14 +this.EXPORTED_SYMBOLS = ["read"];
    1.15 +
    1.16 +let {results: Cr, utils: Cu, interfaces: Ci} = Components;
    1.17 +
    1.18 +let SharedAll = Cu.import("resource://gre/modules/osfile/osfile_shared_allthreads.jsm", {});
    1.19 +
    1.20 +let SysAll = {};
    1.21 +if (SharedAll.Constants.Win) {
    1.22 +  Cu.import("resource://gre/modules/osfile/osfile_win_allthreads.jsm", SysAll);
    1.23 +} else if (SharedAll.Constants.libc) {
    1.24 +  Cu.import("resource://gre/modules/osfile/osfile_unix_allthreads.jsm", SysAll);
    1.25 +} else {
    1.26 +  throw new Error("I am neither under Windows nor under a Posix system");
    1.27 +}
    1.28 +let {Promise} = Cu.import("resource://gre/modules/Promise.jsm", {});
    1.29 +let {XPCOMUtils} = Cu.import("resource://gre/modules/XPCOMUtils.jsm", {});
    1.30 +
    1.31 +/**
    1.32 + * The native service holding the implementation of the functions.
    1.33 + */
    1.34 +XPCOMUtils.defineLazyServiceGetter(this,
    1.35 +  "Internals",
    1.36 +  "@mozilla.org/toolkit/osfile/native-internals;1",
    1.37 +  "nsINativeOSFileInternalsService");
    1.38 +
    1.39 +/**
    1.40 + * Native implementation of OS.File.read
    1.41 + *
    1.42 + * This implementation does not handle option |compression|.
    1.43 + */
    1.44 +this.read = function(path, options = {}) {
    1.45 +  // Sanity check on types of options
    1.46 +  if ("encoding" in options && typeof options.encoding != "string") {
    1.47 +    return Promise.reject(new TypeError("Invalid type for option encoding"));
    1.48 +  }
    1.49 +  if ("compression" in options && typeof options.compression != "string") {
    1.50 +    return Promise.reject(new TypeError("Invalid type for option compression"));
    1.51 +  }
    1.52 +  if ("bytes" in options && typeof options.bytes != "number") {
    1.53 +    return Promise.reject(new TypeError("Invalid type for option bytes"));
    1.54 +  }
    1.55 +
    1.56 +  let deferred = Promise.defer();
    1.57 +  Internals.read(path,
    1.58 +    options,
    1.59 +    function onSuccess(success) {
    1.60 +      success.QueryInterface(Ci.nsINativeOSFileResult);
    1.61 +      if ("outExecutionDuration" in options) {
    1.62 +        options.outExecutionDuration =
    1.63 +          success.executionDurationMS +
    1.64 +          (options.outExecutionDuration || 0);
    1.65 +      }
    1.66 +      deferred.resolve(success.result);
    1.67 +    },
    1.68 +    function onError(operation, oserror) {
    1.69 +      deferred.reject(new SysAll.Error(operation, oserror, path));
    1.70 +    }
    1.71 +  );
    1.72 +  return deferred.promise;
    1.73 +};