| /* |
| * Copyright 2000-2009 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.intellij.util.io; |
| |
| import com.intellij.openapi.application.ApplicationManager; |
| import com.intellij.openapi.progress.ProcessCanceledException; |
| import com.intellij.openapi.progress.ProgressIndicator; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.net.URLConnection; |
| import java.util.concurrent.Future; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| |
| /** |
| * @author nik |
| */ |
| public class UrlConnectionUtil { |
| private UrlConnectionUtil() { |
| } |
| |
| public static |
| @Nullable |
| InputStream getConnectionInputStream(URLConnection connection, ProgressIndicator pi) { |
| try { |
| return getConnectionInputStreamWithException(connection, pi); |
| } |
| catch (ProcessCanceledException e) { |
| return null; |
| } |
| catch (IOException e) { |
| return null; |
| } |
| } |
| |
| |
| public static InputStream getConnectionInputStreamWithException(@NotNull URLConnection connection, @Nullable ProgressIndicator pi) |
| throws IOException { |
| InputStreamGetter getter = new InputStreamGetter(connection); |
| final Future<?> getterFuture = ApplicationManager.getApplication().executeOnPooledThread(getter); |
| while (true) { |
| if (pi != null) { |
| pi.checkCanceled(); |
| } |
| |
| try { |
| try { |
| getterFuture.get(50, TimeUnit.MILLISECONDS); |
| } |
| catch (TimeoutException ignored) { |
| } |
| |
| if (pi != null) { |
| pi.setIndeterminate(true); |
| pi.setText(pi.getText()); |
| } |
| |
| if (getterFuture.isDone()) { |
| break; |
| } |
| } |
| catch (Exception e) { |
| throw new ProcessCanceledException(e); |
| } |
| } |
| //noinspection ThrowableResultOfMethodCallIgnored |
| if (getter.getException() != null) { |
| throw getter.getException(); |
| } |
| |
| return getter.getInputStream(); |
| } |
| |
| public static class InputStreamGetter implements Runnable { |
| private InputStream myInputStream; |
| private final URLConnection myUrlConnection; |
| private IOException myException; |
| |
| public InputStreamGetter(URLConnection urlConnection) { |
| myUrlConnection = urlConnection; |
| } |
| |
| public IOException getException() { |
| return myException; |
| } |
| |
| public InputStream getInputStream() { |
| return myInputStream; |
| } |
| |
| @Override |
| public void run() { |
| try { |
| myInputStream = myUrlConnection.getInputStream(); |
| } |
| catch (IOException e) { |
| myException = e; |
| myInputStream = null; |
| } |
| catch (Exception e) { |
| myException = new IOException(); |
| myException.initCause(e); |
| myInputStream = null; |
| } |
| } |
| } |
| } |