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--- software:firefox-xpi-programming:0ther [2010/01/29 11:12] – создано artur
+++ software:firefox-xpi-programming:0ther [2017/03/23 21:59] (текущий) – внешнее изменение 127.0.0.1
@@ Строка 1: / Строка 1: @@
 ====== Разные куски кода ======
+===== Настройки: Чтение-запись =====
+<code javascript>var prefs = Components
+                .classes["@mozilla.org/preferences-service;1"]
+            .getService(Components.interfaces.nsIPrefService)
+            .getBranch("extensions.ADDONNAMEGOESHERE.");
+var string = prefs.getCharPref("PREFERENCE NAME");
+prefs.setCharPref("PREFERENCE NAME", string);
+var bool = prefs.getBoolPref("PREFERENCE NAME");
+prefs.setBoolPref("PREFERENCE NAME", bool);</code>
+===== Read Chrome files =====
+<code  javascript>function chromeToPath (aPath) {
+   if (!aPath || !(/^chrome:/.test(aPath)))
+      return; //not a chrome url
+   var rv;
+      var ios = Components.classes['@mozilla.org/network/io-service;1'].getService(Components.interfaces["nsIIOService"]);
+        var uri = ios.newURI(aPath, "UTF-8", null);
+        var cr = Components.classes['@mozilla.org/chrome/chrome-registry;1'].getService(Components.interfaces["nsIChromeRegistry"]);
+        rv = cr.convertChromeURL(uri).spec;
+        if (/^file:/.test(rv))
+          rv = this.urlToPath(rv);
+        else
+          rv = this.urlToPath("file://"+rv);
+      return rv;
+}
+function urlToPath (aPath) {
+    if (!aPath || !/^file:/.test(aPath))
+      return ;
+    var rv;
+   var ph = Components.classes["@mozilla.org/network/protocol;1?name=file"]
+        .createInstance(Components.interfaces.nsIFileProtocolHandler);
+    rv = ph.getFileFromURLSpec(aPath).path;
+    return rv;
+}</code>
 ===== Чтение из файла =====
-<code js>function getContents(aURL){
+<code javascript>function getContents(aURL){
   var ioService=Components.classes["@mozilla.org/network/io-service;1"]
     .getService(Components.interfaces.nsIIOService);
@@ Строка 24: / Строка 74: @@
 }catch(e){alert(e)}
 </code>
+===== Запись в файл =====
+<code js>function doXmlStuff () {
+   var somefile = chromeToPath("chrome://path/to/file");
+   var xmlDoc;
+   var file = Components.classes["@mozilla.org/file/local;1"]
+         .createInstance(Components.interfaces.nsILocalFile);
+   file.initWithPath(somefile);
+   if (!(file.exists())) {
+      var fcStream = Components.classes["@mozilla.org/network/file-output-stream;1"]
+         .createInstance(Components.interfaces.nsIFileOutputStream);
+      fcStream.init(file, 0x02 | 0x08 | 0x20, 0666, 0); // write, create, truncate
+      var data = '<xml><rootnode></rootnode>';
+      fcStream.write(data,data.length);
+      fcStream.close
+   }
+   xmlDoc = document.implementation.createDocument("","",null);
+   xmlDoc.load("chrome://piratequesting/content/trainingLog.xml");
+   xmlDoc.onload = function () {
+      xmlDoc.documentElement.appendChild(....whatever you want to append....);
+      var foStream = Components.classes["@mozilla.org/network/file-output-stream;1"]
+                         .createInstance(Components.interfaces.nsIFileOutputStream);
+      //clear the file for writing the new doc
+      foStream.init(file, 0x02 | 0x08 | 0x20, 0666, 0); // write, create, truncate
+      var ser = new XMLSerializer();
+      //write the serialized XML to file
+      ser.serializeToStream(xmlDoc, foStream, "");
+      foStream.close();
+   }
+}</code>