The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/toolkit/identity/LogUtils.jsm	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,103 @@
     1.4 +/* -*- Mode: js2; js2-basic-offset: 2; indent-tabs-mode: nil; -*- */
     1.5 +/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
     1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
     1.8 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.9 +
    1.10 +"use strict";
    1.11 +
    1.12 +this.EXPORTED_SYMBOLS = ["Logger"];
    1.13 +const PREF_DEBUG = "toolkit.identity.debug";
    1.14 +
    1.15 +const Cu = Components.utils;
    1.16 +const Ci = Components.interfaces;
    1.17 +const Cc = Components.classes;
    1.18 +const Cr = Components.results;
    1.19 +
    1.20 +Cu.import("resource://gre/modules/XPCOMUtils.jsm");
    1.21 +Cu.import("resource://gre/modules/Services.jsm");
    1.22 +
    1.23 +function IdentityLogger() {
    1.24 +  Services.prefs.addObserver(PREF_DEBUG, this, false);
    1.25 +  this._debug = Services.prefs.getBoolPref(PREF_DEBUG);
    1.26 +  return this;
    1.27 +}
    1.28 +
    1.29 +IdentityLogger.prototype = {
    1.30 +  QueryInterface: XPCOMUtils.generateQI([Ci.nsISupports, Ci.nsIObserver]),
    1.31 +
    1.32 +  observe: function observe(aSubject, aTopic, aData) {
    1.33 +    switch(aTopic) {
    1.34 +      case "nsPref:changed":
    1.35 +        this._debug = Services.prefs.getBoolPref(PREF_DEBUG);
    1.36 +        break;
    1.37 +
    1.38 +      case "quit-application-granted":
    1.39 +        Services.prefs.removeObserver(PREF_DEBUG, this);
    1.40 +        break;
    1.41 +
    1.42 +      default:
    1.43 +        this.log("Logger observer", "Unknown topic:", aTopic);
    1.44 +        break;
    1.45 +    }
    1.46 +  },
    1.47 +
    1.48 +  _generateLogMessage: function _generateLogMessage(aPrefix, args) {
    1.49 +    // create a string representation of a list of arbitrary things
    1.50 +    let strings = [];
    1.51 +
    1.52 +    // XXX bug 770418 - args look like flattened array, not list of strings
    1.53 +
    1.54 +    args.forEach(function(arg) {
    1.55 +      if (typeof arg === 'string') {
    1.56 +        strings.push(arg);
    1.57 +      } else if (typeof arg === 'undefined') {
    1.58 +        strings.push('undefined');
    1.59 +      } else if (arg === null) {
    1.60 +        strings.push('null');
    1.61 +      } else {
    1.62 +        try {
    1.63 +          strings.push(JSON.stringify(arg, null, 2));
    1.64 +        } catch(err) {
    1.65 +          strings.push("<<something>>");
    1.66 +        }
    1.67 +      }
    1.68 +    });
    1.69 +    return 'Identity ' + aPrefix + ': ' + strings.join(' ');
    1.70 +  },
    1.71 +
    1.72 +  /**
    1.73 +   * log() - utility function to print a list of arbitrary things
    1.74 +   *
    1.75 +   * Enable with about:config pref toolkit.identity.debug
    1.76 +   */
    1.77 +  log: function log(aPrefix, ...args) {
    1.78 +    if (!this._debug) {
    1.79 +      return;
    1.80 +    }
    1.81 +    let output = this._generateLogMessage(aPrefix, args);
    1.82 +    dump(output + "\n");
    1.83 +
    1.84 +    // Additionally, make the output visible in the Error Console
    1.85 +    Services.console.logStringMessage(output);
    1.86 +  },
    1.87 +
    1.88 +  /**
    1.89 +   * reportError() - report an error through component utils as well as
    1.90 +   * our log function
    1.91 +   */
    1.92 +  reportError: function reportError(aPrefix, ...aArgs) {
    1.93 +    let prefix = aPrefix + ' ERROR';
    1.94 +
    1.95 +    // Report the error in the browser
    1.96 +    let output = this._generateLogMessage(aPrefix, aArgs);
    1.97 +    Cu.reportError(output);
    1.98 +    dump("ERROR: " + output + "\n");
    1.99 +    for (let frame = Components.stack.caller; frame; frame = frame.caller) {
   1.100 +      dump(frame + "\n");
   1.101 +    }
   1.102 +  }
   1.103 +
   1.104 +};
   1.105 +
   1.106 +this.Logger = new IdentityLogger();