Java Code Examples for com.intellij.openapi.vfs.VirtualFile#findChild()

@Nullable
public static Module findFlutterGradleModule(@NotNull Project project) {
  String moduleName = AndroidUtils.FLUTTER_MODULE_NAME;
  Module module = findModuleNamed(project, moduleName);
  if (module == null) {
    moduleName = flutterGradleModuleName(project);
    module = findModuleNamed(project, moduleName);
    if (module == null) {
      return null;
    }
  }
  VirtualFile file = locateModuleRoot(module);
  if (file == null) {
    return null;
  }
  file = file.getParent().getParent();
  VirtualFile meta = file.findChild(".metadata");
  if (meta == null) {
    return null;
  }
  VirtualFile android = getFlutterManagedAndroidDir(meta.getParent());
  if (android != null && android.getName().equals(".android")) {
    return module; // Only true for Flutter modules.
  }
  return null;
}
 

@Nullable
private static VirtualFile getProjectForFile(@Nullable VirtualFile file) {
  // Expect true: isProjectFileName(file.getName()), but some flexibility is allowed.
  if (file == null) {
    return null;
  }
  if (file.isDirectory()) {
    return isAndroidWithApp(file) ? file : null;
  }
  VirtualFile dir = file.getParent();
  if (isAndroidWithApp(dir)) {
    // In case someone moves the .iml file, or the project organization gets rationalized.
    return dir;
  }
  VirtualFile project = dir.findChild("android");
  if (project != null && isAndroidWithApp(project)) {
    return project;
  }
  project = dir.findChild(".android");
  if (project != null && isAndroidWithApp(project)) {
    return project;
  }
  return null;
}
 

@NotNull
private static Map<Module, VirtualFile> findContentRootsFor(@NotNull Project project, @NotNull String filename) {
    Map<Module, VirtualFile> rootContents = new HashMap<>();

    ModuleManager moduleManager = ModuleManager.getInstance(project);
    for (Module module : moduleManager.getModules()) {
        for (VirtualFile contentRoot : ModuleRootManager.getInstance(module).getContentRoots()) {
            VirtualFile packageJson = contentRoot.findChild(filename);
            if (packageJson != null && !rootContents.containsKey(module)) {
                rootContents.put(module, packageJson);
            }
        }
    }

    return rootContents;
}
 

public void testParentRename() throws Exception {
  VirtualFile dir = myRoot.createChildDirectory(this, "dir");
  VirtualFile f = dir.createChildData(this, "foo.txt");
  f.setBinaryContent(new byte[]{123}, -1, 4000);

  dir.rename(this, "dir2");

  revertLastChange();

  assertNull(myRoot.findChild("dir2"));
  dir = myRoot.findChild("dir");
  f = dir.findChild("foo.txt");
  assertNotNull(f);
  assertEquals(123, f.contentsToByteArray()[0]);
  assertEquals(4000, f.getTimeStamp());
}
 

private static boolean isVanillaAddToApp(@NotNull Project project, @Nullable VirtualFile file, @NotNull String name) {
  if (file == null) {
    return false;
  }
  VirtualFile dir = file.getParent();
  if (dir.findChild(".ios") == null) {
    dir = dir.getParent();
  }
  if (dir.getName().equals(".android")) {
    dir = dir.getParent();
  }
  if (dir.findChild(".ios") == null && dir.findChild("ios") == null) {
    return false;
  }
  if (doesBuildFileExist(dir)) {
    return true;
  }
  GradleSettingsFile parsedSettings = parseSettings(project);
  if (parsedSettings == null) {
    return false;
  }
  // Check settings for "include :name".
  return findInclude(requireNonNull(parsedSettings), name) == null;
}
 

@Nullable
public static VirtualFile findExtensionRootFolder(@NotNull VirtualFile file) {
    if (file.isDirectory()) {
        VirtualFile child = file.findChild("ext_emconf.php");

        if (child != null) {
            return file;
        }
    }

    // dragons ahead.
    if (file.getParent() != null) {
        return findExtensionRootFolder(file.getParent());
    }

    return null;
}
 

@Nullable
private static VirtualFile getProjectForFile(@Nullable VirtualFile file) {
  // Expect true: isProjectFileName(file.getName()), but some flexibility is allowed.
  if (file == null) {
    return null;
  }
  if (file.isDirectory()) {
    return isAndroidWithApp(file) ? file : null;
  }
  VirtualFile dir = file.getParent();
  if (isAndroidWithApp(dir)) {
    // In case someone moves the .iml file, or the project organization gets rationalized.
    return dir;
  }
  VirtualFile project = dir.findChild("android");
  if (project != null && isAndroidWithApp(project)) {
    return project;
  }
  project = dir.findChild(".android");
  if (project != null && isAndroidWithApp(project)) {
    return project;
  }
  return null;
}
 

/**
 * Returns all Ignore files in given {@link Project} that can match current passed file.
 *
 * @param project current project
 * @param file    current file
 * @return collection of suitable Ignore files
 */
public static List<VirtualFile> getSuitableIgnoreFiles(@NotNull Project project, @NotNull IgnoreFileType fileType,
                                                       @NotNull VirtualFile file)
        throws ExternalFileException {
    VirtualFile baseDir = getModuleRootForFile(file, project);
    List<VirtualFile> files = new ArrayList<>();
    if (file.getCanonicalPath() == null || baseDir == null ||
            !VfsUtilCore.isAncestor(baseDir, file, true)) {
        throw new ExternalFileException();
    }
    if (!baseDir.equals(file)) {
        do {
            file = file.getParent();
            VirtualFile ignoreFile = file.findChild(fileType.getIgnoreLanguage().getFilename());
            ContainerUtil.addIfNotNull(files, ignoreFile);
        } while (!file.equals(baseDir));
    }
    return files;
}
 

@Nullable
public static VirtualFile getDirectoryStoreFile(Project project) {
  VirtualFile baseDir = project.getBaseDir();
  if(baseDir == null) {
    return null;
  }
  return baseDir.findChild(Project.DIRECTORY_STORE_FOLDER);
}
 

@Nullable
private static VirtualFile findChild(VirtualFile file, @NotNull String child) {
	if (child.equals(".")) {
		return file;
	}
	if (child.equals("..")) {
		return file.getParent();
	}
	return file.findChild(child);
}
 

private VirtualFile findFileInModule(Module module, String fileName) {
    // module name matches class, so we can look at a specific module
    VirtualFile[] sourceRoots = ModuleRootManager.getInstance(module).getSourceRoots();
    if (sourceRoots.length == 0) {
        return null;
    }
    for (VirtualFile root : sourceRoots) {
        VirtualFile file = root.findChild(fileName);
        if (file != null) return file;
    }
    return null;
}
 

/**
 * Returns the closest WORKSPACE file within or above the given directory, or null if not found.
 */
@Nullable
private static VirtualFile findContainingWorkspaceFile(@NotNull VirtualFile dir) {
  while (dir != null) {
    final VirtualFile child = dir.findChild("WORKSPACE");
    if (child != null && child.exists() && !child.isDirectory()) {
      return child;
    }
    dir = dir.getParent();
  }

  // not found
  return null;
}
 

/**
 * Return the virtual file of the BUCK file of the given target. TODO(#7908675): Use Buck's
 * BuildTargetFactory and deprecate this class.
 */
public static VirtualFile getBuckFileFromAbsoluteTarget(Project project, String target) {
  if (!isValidAbsoluteTarget(target)) {
    return null;
  }
  VirtualFile buckDir =
      project.getBaseDir().findFileByRelativePath(extractAbsoluteTarget(target));
  return buckDir != null ? buckDir.findChild(BuckFileUtil.getBuildFileName()) : null;
}
 

private static boolean hasAndroidDir(Project project) {
  if (FlutterSdkUtil.hasFlutterModules(project)) {
    VirtualFile base = project.getBaseDir();
    VirtualFile dir = base.findChild("android");
    if (dir == null) dir = base.findChild(".android");
    return dir != null;
  }
  else {
    return false;
  }
}
 

@Nullable
private VirtualFile findPubspecDir(VirtualFile file) {
  if (file == null) {
    return null;
  }

  if (file.isDirectory()) {
    final VirtualFile pubspec = file.findChild("pubspec.yaml");
    if (pubspec != null && pubspec.exists() && !pubspec.isDirectory()) {
      return file;
    }
  }

  return findPubspecDir(file.getParent());
}
 

@NotNull
public static FlutterSdkVersion readFromSdk(@NotNull VirtualFile sdkHome) {
  final VirtualFile file = sdkHome.findChild("version");

  return readFromFile(file);
}
 

@Nonnull
public Query<VirtualFile> getDirectoriesByPackageName(@Nonnull final String packageName, final boolean includeLibrarySources) {
  List<VirtualFile> result = myDirectoriesByPackageNameCache.get(packageName);
  if (result == null) {
    if (myNonExistentPackages.contains(packageName)) return EmptyQuery.getEmptyQuery();

    result = ContainerUtil.newSmartList();

    if (StringUtil.isNotEmpty(packageName) && !StringUtil.startsWithChar(packageName, '.')) {
      int i = packageName.lastIndexOf('.');
      while (true) {
        String shortName = packageName.substring(i + 1);
        String parentPackage = i > 0 ? packageName.substring(0, i) : "";
        for (VirtualFile parentDir : getDirectoriesByPackageName(parentPackage, true)) {
          VirtualFile child = !parentDir.isValid() ? null : parentDir.findChild(shortName);
          if (child != null && child.isDirectory() && getInfoForFile(child).isInProject() && packageName.equals(getPackageName(child))) {
            result.add(child);
          }
        }
        if (i < 0) break;
        i = packageName.lastIndexOf('.', i - 1);
      }
    }

    for (VirtualFile file : myPackagePrefixRoots.get(packageName)) {
      if (file.isDirectory()) {
        result.add(file);
      }
    }

    if (!result.isEmpty()) {
      myDirectoriesByPackageNameCache.put(packageName, result);
    }
    else {
      myNonExistentPackages.add(packageName);
    }
  }

  if (!includeLibrarySources) {
    result = ContainerUtil.filter(result, file -> {
      DirectoryInfo info = getInfoForFile(file);
      return info.isInProject() && (!info.isInLibrarySource() || info.isInModuleSource() || info.hasLibraryClassRoot());
    });
  }
  return new CollectionQuery<>(result);
}
 

private static VirtualFile getAndroidProjectDir(VirtualFile dir) {
  return (dir.findChild("app") == null) ? null : dir;
}
 

@Nullable
private static VirtualFile getFlutterManagedAndroidDir(VirtualFile dir) {
  VirtualFile meta = dir.findChild(".metadata");
  if (meta != null) {
    try {
      Properties properties = new Properties();
      properties.load(new InputStreamReader(meta.getInputStream(), Charsets.UTF_8));
      String value = properties.getProperty("project_type");
      if (value == null) {
        return null;
      }
      switch (value) {
        case "app":
          return dir.findChild("android");
        case "module":
          return dir.findChild(".android");
        case "package":
          return null;
        case "plugin":
          return dir.findFileByRelativePath("example/android");
      }
    }
    catch (IOException e) {
      // fall thru
    }
  }
  VirtualFile android;
  android = dir.findChild(".android");
  if (android != null) {
    return android;
  }
  android = dir.findChild("android");
  if (android != null) {
    return android;
  }
  android = dir.findFileByRelativePath("example/android");
  if (android != null) {
    return android;
  }
  return null;
}
 

private static boolean isAndroidWithApp(@NotNull VirtualFile file) {
  return FlutterExternalIdeActionGroup.isAndroidDirectory(file) && (file.findChild("app") != null || file.findChild("src") != null);
}