1 // Copyright (c) 2010 The Chromium Authors. All rights reserved.

     2 // Use of this source code is governed by a BSD-style license that can be

     3 // found in the LICENSE file.

     4 

     5 package org.chromium.debug.ui.actions;

     6 

     7 import java.io.ByteArrayOutputStream;

     8 import java.io.IOException;

     9 import java.io.InputStream;

    10 

    11 import org.chromium.debug.core.ChromiumDebugPlugin;

    12 import org.chromium.sdk.LiveEditExtension;

    13 import org.chromium.sdk.UpdatableScript;

    14 import org.eclipse.core.resources.IFile;

    15 import org.eclipse.core.runtime.CoreException;

    16 import org.eclipse.core.runtime.IStatus;

    17 import org.eclipse.core.runtime.Status;

    18 

    19 /**

    20  * The main action of LiveEdit feature. It gets the current state of a working file and pushes

    21  * it into running V8 VM.

    22  */

    23 public class PushChangesAction extends V8ScriptAction {

    24   @Override

    25   protected void execute(final FilePair filePair) {

    26     UpdatableScript updatableScript =

    27         LiveEditExtension.castToUpdatableScript(filePair.getVmResource().getScript());

    28 

    29     if (updatableScript == null) {

    30       throw new RuntimeException();

    31     }

    32 

    33     byte[] fileData;

    34     try {

    35       fileData = readFileContents(filePair.getFile());

    36     } catch (IOException e) {

    37       throw new RuntimeException(e);

    38     } catch (CoreException e) {

    39       throw new RuntimeException(e);

    40     }

    41 

    42     // We are using default charset here like usually.

    43     String newSource = new String(fileData);

    44 

    45     UpdatableScript.UpdateCallback callback = new UpdatableScript.UpdateCallback() {

    46       public void success(Object report) {

    47         ChromiumDebugPlugin.log(new Status(IStatus.OK, ChromiumDebugPlugin.PLUGIN_ID,

    48             "Script has been successfully updated on remote: " + report)); //$NON-NLS-1$

    49       }

    50       public void failure(String message) {

    51         ChromiumDebugPlugin.log(new Status(IStatus.ERROR, ChromiumDebugPlugin.PLUGIN_ID,

    52             "Failed to change script on remote: " + message)); //$NON-NLS-1$

    53       }

    54     };

    55 

    56     updatableScript.setSourceOnRemote(newSource, callback, null);

    57   }

    58 

    59 

    60   private static byte[] readFileContents(IFile file) throws IOException, CoreException {

    61     InputStream inputStream = file.getContents();

    62     try {

    63       return readBytes(inputStream);

    64     } finally {

    65       inputStream.close();

    66     }

    67   }

    68 

    69   private static byte[] readBytes(InputStream inputStream) throws IOException {

    70     ByteArrayOutputStream buffer = new ByteArrayOutputStream();

    71     byte[] array = new byte[1024];

    72     while (true) {

    73       int len = inputStream.read(array);

    74       if (len == -1) {

    75         break;

    76       }

    77       buffer.write(array, 0, len);

    78     }

    79     return buffer.toByteArray();

    80   }

    81 }