includes/basic.js

   1 /*
   2  * Copyright 2015 Ketmar Dark <ketmar@ketmar.no-ip.org>
   3  * Portions copyright 2010, Erik Vold
   4  * Contributors: See contributors list in install.rdf and CREDITS
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * Note that this license applies only to the Greasemonkey extension source
  14  * files, not to the user scripts which it runs. User scripts are licensed
  15  * separately by their authors.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  20  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23  * SOFTWARE.
  24  *
  25  * The above copyright notice and this permission notice shall be included in all
  26  * copies or substantial portions of the Software.
  27  */
  28 // WARNING! there is no `require` yet!
  29 const {utils: Cu, classes: Cc, interfaces: Ci} = Components;
  30 Cu.import("resource://gre/modules/Services.jsm", this);
  31
  32
  33 ////////////////////////////////////////////////////////////////////////////////
  34 // error console log
  35 function logError () {
  36   if (arguments.length) {
  37     let s = "";
  38     for (let idx = 0; idx < arguments.length; ++idx) s += ""+arguments[idx];
  39     Cu.reportError(s);
  40   }
  41 }
  42
  43 function logException (msg, e) {
  44   if (e) {
  45     Cu.reportError(""+msg+": "+e.name+": "+e.message)
  46     Cu.reportError(e);
  47     if (e.stack) Components.utils.reportError(e.stack);
  48   } else {
  49     Cu.reportError(""+msg);
  50   }
  51 }
  52
  53 // https://developer.mozilla.org/en-US/docs/XPCOM_Interface_Reference/nsIConsoleService#logStringMessage() - wstring / wide string
  54 (function (global) {
  55   const conService = global.Cc["@mozilla.org/consoleservice;1"].getService(global.Ci.nsIConsoleService);
  56   global.conlog = function () {
  57     if (global.debugOptions.logEnabled && arguments.length) {
  58       let s = "";
  59       for (let idx = 0; idx < arguments.length; ++idx) s += ""+arguments[idx];
  60       conService.logStringMessage(s);
  61     }
  62   };
  63 })(this);
  64
  65
  66 ////////////////////////////////////////////////////////////////////////////////
  67 // include
  68 (function (global) {
  69   let myUrl = global.__SCRIPT_URI_SPEC__;
  70   let scp = {};
  71   global.Cu.import("resource://gre/modules/Services.jsm", scp);
  72
  73   global.include = function (name) {
  74     if (name.indexOf("/") >= 0 || name.length == 0) { global.logError("invalid include name: '"+name+"'"); throw new Error("invalid include name: '"+name+"'"); }
  75     if (!(/.\.js$/.test(name))) name += ".js";
  76     let uri = scp.Services.io.newURI(myUrl+"/../includes/"+name, null, null);
  77     try {
  78       scp.Services.scriptloader.loadSubScript(uri.spec, global);
  79     } catch (e) {
  80       global.logException("INCLUDE ERROR");
  81       throw e;
  82     }
  83   };
  84 })(this);
  85
  86
  87 ////////////////////////////////////////////////////////////////////////////////
  88 // addExport, require
  89 (function (global) {
  90   let myUrl = global.__SCRIPT_URI_SPEC__;
  91   let scp = {};
  92   const Cu = global.Cu;
  93   Cu.import("resource://gre/modules/Services.jsm", scp);
  94
  95   let loc = null;
  96   global.getLocale = function () {
  97     if (loc === null) loc = global.Cc["@mozilla.org/chrome/chrome-registry;1"].getService(global.Ci.nsIXULChromeRegistry).getSelectedLocale("global");
  98     return loc;
  99   };
 100
 101   // list of symbols exported to modules
 102   let exportList = {};
 103
 104   function addExport (name, fn) {
 105     if (typeof(name) != "string" || name.length == 0) throw new Error("invalid export name");
 106     if (typeof(fn) === null || typeof(fn) == "undefined") {
 107       // remove export
 108       delete exportList[name];
 109     } else {
 110       exportList[name] = fn;
 111     }
 112   }
 113   global.addExport = addExport;
 114
 115   addExport("Cu", global.Cu);
 116   addExport("Cc", global.Cc);
 117   addExport("Ci", global.Ci);
 118   addExport("Services", global.Services);
 119
 120   addExport("logException", global.logException);
 121   addExport("logError", global.logError);
 122   addExport("conlog", global.conlog);
 123
 124   function fillExports (scope) {
 125     for (let name in exportList) if (typeof(name) == "string" && name.length > 0) scope[name] = exportList[name];
 126   }
 127
 128   // imports a commonjs style javascript file with loadSubScrpt
 129   let modules = {}; // list of loaded modules
 130
 131   global.require = function (name) {
 132     if (name.indexOf("/") >= 0 || name.length == 0) { global.logError("invalid module name: '"+name+"'"); throw new Error("invalid module name: '"+name+"'"); }
 133     if (!(/.\.js$/.test(name))) name += ".js";
 134     if (modules[name]) return modules[name];
 135     // functions available to modules
 136     let scope = {};
 137     fillExports(scope);
 138     //scope.global = global; // just in case
 139     // uses(name[, name]...);
 140     scope.uses = function () {
 141       if (arguments.length != 1) {
 142         for (let idx = 0; idx < arguments.length; ++idx) Cu.import(arguments[idx], scope);
 143         return null;
 144       } else {
 145         return Cu.import(arguments[0], scope);
 146       }
 147     };
 148     scope.exports = {};
 149     try {
 150       let uri = scp.Services.io.newURI(myUrl+"/../modules/"+name, null, null);
 151       scp.Services.scriptloader.loadSubScript(uri.spec, scope);
 152     } catch (e) {
 153       global.logException("REQUIRE ERROR");
 154       throw e;
 155     }
 156     modules[name] = scope.exports;
 157     return scope.exports;
 158   };
 159
 160   addExport("getLocale", global.getLocale);
 161   addExport("addExport", global.addExport);
 162   addExport("require", global.require);
 163
 164   addExport("debugOptions", global.debugOptions);
 165   addExport("guerillaOptions", global.guerillaOptions);
 166 })(this);