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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /toolkit/identity/LogUtils.jsm
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'toolkit/identity/LogUtils.jsm')
-rw-r--r--toolkit/identity/LogUtils.jsm103
1 files changed, 103 insertions, 0 deletions
diff --git a/toolkit/identity/LogUtils.jsm b/toolkit/identity/LogUtils.jsm
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+/* -*- js-indent-level: 2; indent-tabs-mode: nil -*- */
+/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+this.EXPORTED_SYMBOLS = ["Logger"];
+const PREF_DEBUG = "toolkit.identity.debug";
+
+const Cu = Components.utils;
+const Ci = Components.interfaces;
+const Cc = Components.classes;
+const Cr = Components.results;
+
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+
+function IdentityLogger() {
+ Services.prefs.addObserver(PREF_DEBUG, this, false);
+ this._debug = Services.prefs.getBoolPref(PREF_DEBUG);
+ return this;
+}
+
+IdentityLogger.prototype = {
+ QueryInterface: XPCOMUtils.generateQI([Ci.nsISupports, Ci.nsIObserver]),
+
+ observe: function observe(aSubject, aTopic, aData) {
+ switch (aTopic) {
+ case "nsPref:changed":
+ this._debug = Services.prefs.getBoolPref(PREF_DEBUG);
+ break;
+
+ case "quit-application-granted":
+ Services.prefs.removeObserver(PREF_DEBUG, this);
+ break;
+
+ default:
+ this.log("Logger observer", "Unknown topic:", aTopic);
+ break;
+ }
+ },
+
+ _generateLogMessage: function _generateLogMessage(aPrefix, args) {
+ // create a string representation of a list of arbitrary things
+ let strings = [];
+
+ // XXX bug 770418 - args look like flattened array, not list of strings
+
+ args.forEach(function(arg) {
+ if (typeof arg === 'string') {
+ strings.push(arg);
+ } else if (typeof arg === 'undefined') {
+ strings.push('undefined');
+ } else if (arg === null) {
+ strings.push('null');
+ } else {
+ try {
+ strings.push(JSON.stringify(arg, null, 2));
+ } catch (err) {
+ strings.push("<<something>>");
+ }
+ }
+ });
+ return 'Identity ' + aPrefix + ': ' + strings.join(' ');
+ },
+
+ /**
+ * log() - utility function to print a list of arbitrary things
+ *
+ * Enable with about:config pref toolkit.identity.debug
+ */
+ log: function log(aPrefix, ...args) {
+ if (!this._debug) {
+ return;
+ }
+ let output = this._generateLogMessage(aPrefix, args);
+ dump(output + "\n");
+
+ // Additionally, make the output visible in the Error Console
+ Services.console.logStringMessage(output);
+ },
+
+ /**
+ * reportError() - report an error through component utils as well as
+ * our log function
+ */
+ reportError: function reportError(aPrefix, ...aArgs) {
+ let prefix = aPrefix + ' ERROR';
+
+ // Report the error in the browser
+ let output = this._generateLogMessage(aPrefix, aArgs);
+ Cu.reportError(output);
+ dump("ERROR: " + output + "\n");
+ for (let frame = Components.stack.caller; frame; frame = frame.caller) {
+ dump(frame + "\n");
+ }
+ }
+
+};
+
+this.Logger = new IdentityLogger();