1 files changed, 109 insertions, 0 deletions
diff --git a/data/extensions/spyblock@gnu.org/webextension/io.js b/data/extensions/spyblock@gnu.org/webextension/io.js
new file mode 100644
index 0000000..adfee2f
--- /dev/null
+++ b/data/extensions/spyblock@gnu.org/webextension/io.js
@@ -0,0 +1,109 @@
+/*
+ * This file is part of Adblock Plus <https://adblockplus.org/>,
+ * Copyright (C) 2006-2017 eyeo GmbH
+ *
+ * Adblock Plus is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 3 as
+ * published by the Free Software Foundation.
+ *
+ * Adblock Plus is distributed in the hope that it will be useful,
+ * 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/>.
+ */
+
+"use strict";
+
+(function(exports)
+{
+  const keyPrefix = "file:";
+
+  function fileToKey(fileName)
+  {
+    return keyPrefix + fileName;
+  }
+
+  function loadFile(file)
+  {
+    let key = fileToKey(file);
+
+    return browser.storage.local.get(key).then(items =>
+    {
+      if (items.hasOwnProperty(key))
+        return items[key];
+
+      throw "NoSuchFile";
+    });
+  }
+
+  function saveFile(file, data)
+  {
+    return browser.storage.local.set({
+      [fileToKey(file)]: {
+        content: Array.from(data),
+        lastModified: Date.now()
+      }
+    });
+  }
+
+  function removeFile(file)
+  {
+    return browser.storage.local.remove(fileToKey(file));
+  }
+
+  exports.IO =
+  {
+    readFromFile(file)
+    {
+      return loadFile(file).then(entry =>
+      {
+        return entry.content;
+      });
+    },
+
+    writeToFile(file, data)
+    {
+      return saveFile(file, data);
+    },
+
+    copyFile(fromFile, toFile)
+    {
+      return loadFile(fromFile).then(entry =>
+      {
+        return saveFile(toFile, entry.content);
+      });
+    },
+
+    renameFile(fromFile, newName)
+    {
+      return loadFile(fromFile).then(entry =>
+      {
+        return browser.storage.local.set({
+          [fileToKey(newName)]: entry
+        });
+      }).then(() =>
+      {
+        return removeFile(fromFile);
+      });
+    },
+
+    removeFile(file)
+    {
+      return removeFile(file);
+    },
+
+    statFile(file)
+    {
+      return loadFile(file).then(entry =>
+      {
+        return {
+          exists: true,
+          lastModified: entry.lastModified
+        };
+      });
+    }
+  };
+})(this);