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Add a JRT filesystem and add the current JDK to the classpath using it.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| import com.intellij.core.JavaCoreProjectEnvironment; | ||
| import com.intellij.openapi.util.text.StringUtil; | ||
| import com.intellij.openapi.vfs.VirtualFile; | ||
| import com.intellij.util.io.URLUtil; | ||
| import org.jetbrains.annotations.NotNull; | ||
| import org.jetbrains.annotations.Nullable; | ||
|
|
||
| import java.io.File; | ||
| import java.io.FileNotFoundException; | ||
| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.io.UncheckedIOException; | ||
| import java.nio.file.Files; | ||
| import java.nio.file.Path; | ||
| import java.util.List; | ||
| import java.util.Properties; | ||
|
|
||
| public final class ClasspathSetup { | ||
| private ClasspathSetup() { | ||
| } | ||
|
|
||
| public static void addJdkModules(Path jdkHome, JavaCoreProjectEnvironment javaEnv) { | ||
| var jrtFileSystem = javaEnv.getEnvironment().getJrtFileSystem(); | ||
|
|
||
| VirtualFile jdkVfsRoot = jrtFileSystem.findFileByPath(jdkHome.toAbsolutePath() + URLUtil.JAR_SEPARATOR); | ||
| if (jdkVfsRoot == null) { | ||
| System.err.println("Failed to load VFS-entry for JDK home " + jdkHome + ". Is it missing?"); | ||
| return; | ||
| } | ||
|
|
||
| var modulesFolder = jdkVfsRoot.findChild("modules"); | ||
| if (modulesFolder == null) { | ||
| System.err.println("VFS for JDK " + jdkHome + " doesn't have a modules subfolder"); | ||
| return; | ||
| } | ||
|
|
||
| int moduleCount = 0; | ||
| List<String> modules = readModulesFromReleaseFile(jdkHome); | ||
| if (modules != null) { | ||
| for (String module : modules) { | ||
| var moduleRoot = modulesFolder.findChild(module); | ||
| if (moduleRoot == null || !moduleRoot.isDirectory()) { | ||
| System.err.println("Couldn't find module " + module + " even though it was listed in the release file of JDK " + jdkHome); | ||
| } else { | ||
| javaEnv.addSourcesToClasspath(moduleRoot); | ||
| moduleCount++; | ||
| } | ||
| } | ||
| } else { | ||
|
|
||
| for (VirtualFile jrtChild : modulesFolder.getChildren()) { | ||
| if (jrtChild.isDirectory()) { | ||
| javaEnv.addSourcesToClasspath(jrtChild); | ||
| moduleCount++; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| System.out.println("Added " + moduleCount + " modules from " + jdkHome); | ||
| } | ||
|
|
||
| public static void addLibraries(Path librariesPath, JavaCoreProjectEnvironment javaEnv) throws IOException { | ||
| var libraryFiles = Files.readAllLines(librariesPath) | ||
| .stream() | ||
| .filter(l -> l.startsWith("-e=")) | ||
| .map(l -> l.substring(3)) | ||
| .map(File::new) | ||
| .toList(); | ||
|
|
||
| for (var libraryFile : libraryFiles) { | ||
| if (!libraryFile.exists()) { | ||
| throw new UncheckedIOException(new FileNotFoundException(libraryFile.getAbsolutePath())); | ||
| } | ||
| javaEnv.addJarToClassPath(libraryFile); | ||
| System.out.println("Added " + libraryFile); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Reads the "release" file found at the root of normal JDKs | ||
| */ | ||
| private static @Nullable List<String> readModulesFromReleaseFile(@NotNull Path jrtBaseDir) { | ||
| try (InputStream stream = Files.newInputStream(jrtBaseDir.resolve("release"))) { | ||
| Properties p = new Properties(); | ||
| p.load(stream); | ||
| String modules = p.getProperty("MODULES"); | ||
| if (modules != null) { | ||
| return StringUtil.split(StringUtil.unquoteString(modules), " "); | ||
| } | ||
| } catch (IOException | IllegalArgumentException e) { | ||
| return null; | ||
| } | ||
| return null; | ||
| } | ||
| } |
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