| /* |
| * Copyright 2016 The Bazel Authors. All rights reserved. |
| * |
| * 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.google.idea.common.binaryhelper; |
| |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.util.io.URLUtil; |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.net.URL; |
| import java.nio.file.Files; |
| import java.nio.file.StandardCopyOption; |
| import java.util.HashMap; |
| import java.util.Map; |
| import javax.annotation.Nullable; |
| |
| /** Binaries provided to IntelliJ at runtime */ |
| public final class HelperBinaryUtil { |
| |
| private static final Logger LOG = Logger.getInstance(HelperBinaryUtil.class); |
| |
| private static File tempDirectory; |
| private static final Map<String, File> cachedFiles = new HashMap<>(); |
| |
| @Nullable |
| public static synchronized File getHelperBinary(String binaryFilePath) { |
| // Assume the binaries have unique names. This saves having |
| // to recursively clean up directories |
| String binaryName = new File(binaryFilePath).getName(); |
| |
| File file = cachedFiles.get(binaryName); |
| if (file != null) { |
| return file; |
| } |
| if (tempDirectory == null) { |
| tempDirectory = com.google.common.io.Files.createTempDir(); |
| tempDirectory.deleteOnExit(); |
| } |
| file = new File(tempDirectory, binaryName); |
| |
| URL url = HelperBinaryUtil.class.getResource(binaryFilePath); |
| if (url == null) { |
| LOG.error(String.format("Helper binary '%s' was not found", binaryFilePath)); |
| return null; |
| } |
| try (InputStream inputStream = URLUtil.openResourceStream(url)) { |
| Files.copy(inputStream, file.toPath(), StandardCopyOption.REPLACE_EXISTING); |
| file.setExecutable(true); |
| file.deleteOnExit(); |
| cachedFiles.put(binaryName, file); |
| return file; |
| } catch (IOException e) { |
| LOG.error(String.format("Error loading helper binary '%s'", binaryFilePath)); |
| return null; |
| } |
| } |
| } |