Make JavaScript sources compile into the library; convert JavaScript files on the fly

lib/compat.js

Index: lib/compat.js
===================================================================
rename from lib/adblockplus_compat.js
rename to lib/compat.js
--- a/lib/adblockplus_compat.js
+++ b/lib/compat.js
@@ -10,16 +10,23 @@
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+// TODO: These need to be defined properly
+function XMLHttpRequest() {};
+var window = {
+  setTimeout: function(){},
+  requestFileSystem: function(){}
+};
+
 //
 // Module framework stuff
 //
 
 function require(module)
 {
   return require.scopes[module];
 }
@@ -90,206 +97,16 @@ const Cr = Components.results;
 const Cu = Components.utils;
 
 var XPCOMUtils =
 {
   generateQI: function() {}
 };
 
 //
-// Info pseudo-module
-//
-
-require.scopes.info =
-{
-  get addonID()
-  {
-    return chrome.i18n.getMessage("@@extension_id");
-  },
-  addonVersion: "2.1", // Hardcoded for now
-  addonRoot: "",
-  get addonName()
-  {
-    return chrome.i18n.getMessage("name");
-  },
-  application: "chrome"
-};
-
-//
-// IO module: no direct file system access, using FileSystem API
-//
-
-require.scopes.io =
-{
-  IO: {
-    _getFileEntry: function(file, create, successCallback, errorCallback)
-    {
-      if (file instanceof FakeFile)
-        file = file.path;
-      else if ("spec" in file)
-        file = file.spec;
-
-      // Remove directory path - we operate on a single directory in Chrome
-      file = file.replace(/^.*[\/\\]/, "");
-
-      // We request a gigabyte of space, just in case
-      (window.requestFileSystem || window.webkitRequestFileSystem)(window.PERSISTENT, 1024*1024*1024, function(fs)
-      {
-        fs.root.getFile(file, {create: create}, function(fileEntry)
-        {
-          successCallback(fs, fileEntry);
-        }, errorCallback);
-      }, errorCallback);
-    },
-
-    lineBreak: "\n",
-
-    resolveFilePath: function(path)
-    {
-      return new FakeFile(path);
-    },
-
-    readFromFile: function(file, decode, listener, callback, timeLineID)
-    {
-      if ("spec" in file && /^defaults\b/.test(file.spec))
-      {
-        // Code attempts to read the default patterns.ini, we don't have that.
-        // Make sure to execute first-run actions instead.
-        callback(null);
-        if (localStorage.currentVersion)
-          seenDataCorruption = true;
-        delete localStorage.currentVersion;
-        return;
-      }
-
-      this._getFileEntry(file, false, function(fs, fileEntry)
-      {
-        fileEntry.file(function(file)
-        {
-          var reader = new FileReader();
-          reader.onloadend = function()
-          {
-            if (reader.error)
-              callback(reader.error);
-            else
-            {
-              var lines = reader.result.split(/[\r\n]+/);
-              for (var i = 0; i < lines.length; i++)
-                listener.process(lines[i]);
-              listener.process(null);
-              callback(null);
-            }
-          };
-          reader.readAsText(file);
-        }, callback);
-      }, callback);
-    },
-
-    writeToFile: function(file, encode, data, callback, timeLineID)
-    {
-      this._getFileEntry(file, true, function(fs, fileEntry)
-      {
-        fileEntry.createWriter(function(writer)
-        {
-          var executeWriteOperation = function(op, nextOperation)
-          {
-            writer.onwriteend = function()
-            {
-              if (writer.error)
-                callback(writer.error);
-              else
-                nextOperation();
-            }.bind(this);
-
-            op();
-          }.bind(this);
-
-          executeWriteOperation(writer.truncate.bind(writer, 0), function()
-          {
-            var blob;
-            try
-            {
-              blob = new Blob([data.join(this.lineBreak) + this.lineBreak], {type: "text/plain"});
-            }
-            catch (e)
-            {
-              if (!(e instanceof TypeError))
-                throw e;
-
-              // Blob wasn't a constructor before Chrome 20
-              var builder = new (window.BlobBuilder || window.WebKitBlobBuilder);
-              builder.append(data.join(this.lineBreak) + this.lineBreak);
-              blob = builder.getBlob("text/plain");
-            }
-            executeWriteOperation(writer.write.bind(writer, blob), callback.bind(null, null));
-          }.bind(this));
-        }.bind(this), callback);
-      }.bind(this), callback);
-    },
-
-    copyFile: function(fromFile, toFile, callback)
-    {
-      // Simply combine read and write operations
-      var data = [];
-      this.readFromFile(fromFile, false, {
-        process: function(line)
-        {
-          if (line !== null)
-            data.push(line);
-        }
-      }, function(e)
-      {
-        if (e)
-          callback(e);
-        else
-          this.writeToFile(toFile, false, data, callback);
-      }.bind(this));
-    },
-
-    renameFile: function(fromFile, newName, callback)
-    {
-      this._getFileEntry(fromFile, false, function(fs, fileEntry)
-      {
-        fileEntry.moveTo(fs.root, newName, function()
-        {
-          callback(null);
-        }, callback);
-      }, callback);
-    },
-
-    removeFile: function(file, callback)
-    {
-      this._getFileEntry(file, false, function(fs, fileEntry)
-      {
-        fileEntry.remove(function()
-        {
-          callback(null);
-        }, callback);
-      }, callback);
-    },
-
-    statFile: function(file, callback)
-    {
-      this._getFileEntry(file, false, function(fs, fileEntry)
-      {
-        fileEntry.getMetadata(function(metadata)
-        {
-          callback(null, {
-            exists: true,
-            isDirectory: fileEntry.isDirectory,
-            isFile: fileEntry.isFile,
-            lastModified: metadata.modificationTime.getTime()
-          });
-        }, callback);
-      }, callback);
-    }
-  }
-};
-
-//
 // Fake nsIFile implementation for our I/O
 //
 
 function FakeFile(path)
 {
   this.path = path;
 }
 FakeFile.prototype =
@@ -313,137 +130,16 @@ FakeFile.prototype =
   get parent()
   {
     return {create: function() {}};
   },
   normalize: function() {}
 };
 
 //
-// Prefs module: the values are hardcoded for now.
-//
-
-require.scopes.prefs = {
-  Prefs: {
-    enabled: true,
-    patternsfile: "patterns.ini",
-    patternsbackups: 5,
-    patternsbackupinterval: 24,
-    data_directory: "",
-    savestats: false,
-    privateBrowsing: false,
-    subscriptions_fallbackerrors: 5,
-    subscriptions_fallbackurl: "https://adblockplus.org/getSubscription?version=%VERSION%&url=%SUBSCRIPTION%&downloadURL=%URL%&error=%ERROR%&channelStatus=%CHANNELSTATUS%&responseStatus=%RESPONSESTATUS%",
-    subscriptions_autoupdate: true,
-    subscriptions_exceptionsurl: "https://easylist-downloads.adblockplus.org/exceptionrules.txt",
-    documentation_link: "https://adblockplus.org/redirect?link=%LINK%&lang=%LANG%",
-    addListener: function() {}
-  }
-};
-
-//
-// Utils module
-//
-
-require.scopes.utils =
-{
-  Utils: {
-    systemPrincipal: null,
-    getString: function(id)
-    {
-      return id;
-    },
-    runAsync: function(callback, thisPtr)
-    {
-      var params = Array.prototype.slice.call(arguments, 2);
-      window.setTimeout(function()
-      {
-        callback.apply(thisPtr, params);
-      }, 0);
-    },
-    get appLocale()
-    {
-      var locale = chrome.i18n.getMessage("@@ui_locale").replace(/_/g, "-");
-      this.__defineGetter__("appLocale", function() {return locale});
-      return this.appLocale;
-    },
-    generateChecksum: function(lines)
-    {
-      // We cannot calculate MD5 checksums yet :-(
-      return null;
-    },
-    makeURI: function(url)
-    {
-      return Services.io.newURI(url);
-    },
-
-    checkLocalePrefixMatch: function(prefixes)
-    {
-      if (!prefixes)
-        return null;
-
-      var list = prefixes.split(",");
-      for (var i = 0; i < list.length; i++)
-        if (new RegExp("^" + list[i] + "\\b").test(this.appLocale))
-          return list[i];
-
-      return null;
-    },
-
-    chooseFilterSubscription: function(subscriptions)
-    {
-      var selectedItem = null;
-      var selectedPrefix = null;
-      var matchCount = 0;
-      for (var i = 0; i < subscriptions.length; i++)
-      {
-        var subscription = subscriptions[i];
-        if (!selectedItem)
-          selectedItem = subscription;
-
-        var prefix = require("utils").Utils.checkLocalePrefixMatch(subscription.getAttribute("prefixes"));
-        if (prefix)
-        {
-          if (!selectedPrefix || selectedPrefix.length < prefix.length)
-          {
-            selectedItem = subscription;
-            selectedPrefix = prefix;
-            matchCount = 1;
-          }
-          else if (selectedPrefix && selectedPrefix.length == prefix.length)
-          {
-            matchCount++;
-
-            // If multiple items have a matching prefix of the same length:
-            // Select one of the items randomly, probability should be the same
-            // for all items. So we replace the previous match here with
-            // probability 1/N (N being the number of matches).
-            if (Math.random() * matchCount < 1)
-            {
-              selectedItem = subscription;
-              selectedPrefix = prefix;
-            }
-          }
-        }
-      }
-      return selectedItem;
-    }
-  }
-};
-
-//
-// ElemHideHitRegistration dummy implementation
-//
-
-require.scopes.elemHideHitRegistration =
-{
-  AboutHandler: {}
-};
-
-//
 // Services.jsm module emulation
 //
 
 var Services =
 {
   io: {
     newURI: function(uri)
     {