New JNI bindings

src/org/adblockplus/android/JSEngine.java

-/*
- * This file is part of Adblock Plus <http://adblockplus.org/>,
- * Copyright (C) 2006-2013 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/>.
- */
-
-package org.adblockplus.android;
-
-import java.io.IOException;
-import java.io.Reader;
-
-/**
- * Wrapper for JS executor native code.
- */
-public class JSEngine
-{
-  private long context;
-
-  public JSEngine(Object callback)
-  {
-    context = nativeInitialize(callback);
-  }
-
-  public void release()
-  {
-    nativeRelease(context);
-  }
-
-  public Object evaluate(String script)
-  {
-    if (script == null)
-      throw new IllegalArgumentException("empty script");
-    return nativeExecute(script, context);
-  }
-
-  public Object evaluate(Reader reader) throws IOException
-  {
-    return evaluate(readAll(reader));
-  }
-
-  private String readAll(Reader reader) throws IOException
-  {
-    StringBuilder sb = new StringBuilder();
-
-    char[] buffer = new char[8192];
-    int read;
-
-    while ((read = reader.read(buffer, 0, buffer.length)) > 0)
-    {
-      sb.append(buffer, 0, read);
-    }
-
-    return sb.toString();
-  }
-
-  public Object get(String name)
-  {
-    return nativeGet(name, context);
-  }
-
-  public void put(String name, Object value)
-  {
-    nativePut(name, value, context);
-  }
-
-  public long runCallbacks()
-  {
-    return nativeRunCallbacks(context);
-  }
-
-  public void callback(long callback, Object[] params)
-  {
-    nativeCallback(callback, params, context);
-  }
-
-  private native long nativeInitialize(Object callback);
-
-  private native void nativeRelease(long context);
-
-  private native Object nativeExecute(String script, long context);
-
-  private native Object nativeGet(String name, long context);
-
-  private native Object nativePut(String name, Object value, long context);
-
-  private native long nativeRunCallbacks(long context);
-
-  private native void nativeCallback(long callback, Object[] params, long context);
-
-  static
-  {
-    System.loadLibrary("jsEngine");
-  }
-}