@Nullable
private static VirtualFile getVcsRootForLibraryFile(
@NotNull Project project, @NotNull VirtualFile file) {
ProjectLevelVcsManager vcsManager = ProjectLevelVcsManager.getInstance(project);
// for a file inside .jar/.zip consider the .jar/.zip file itself
VirtualFile root = vcsManager.getVcsRootFor(VfsUtilCore.getVirtualFileForJar(file));
if (root != null) {
LOGGER.debug("Found root for zip/jar file: " + root);
return root;
}
// for other libs which don't have jars inside the project dir (such as JDK) take the owner
// module of the lib
List<OrderEntry> entries =
ProjectRootManager.getInstance(project).getFileIndex().getOrderEntriesForFile(file);
Set<VirtualFile> libraryRoots = new HashSet<VirtualFile>();
for (OrderEntry entry : entries) {
if (entry instanceof LibraryOrderEntry || entry instanceof JdkOrderEntry) {
VirtualFile moduleRoot = vcsManager.getVcsRootFor(entry.getOwnerModule().getModuleFile());
if (moduleRoot != null) {
libraryRoots.add(moduleRoot);
}
}
}
if (libraryRoots.size() == 0) {
LOGGER.debug("No library roots");
return null;
}
// if the lib is used in several modules, take the top module
// (for modules of the same level we can't guess anything => take the first one)
Iterator<VirtualFile> libIterator = libraryRoots.iterator();
VirtualFile topLibraryRoot = libIterator.next();
while (libIterator.hasNext()) {
VirtualFile libRoot = libIterator.next();
if (VfsUtilCore.isAncestor(libRoot, topLibraryRoot, true)) {
topLibraryRoot = libRoot;
}
}
LOGGER.debug("Several library roots, returning " + topLibraryRoot);
return topLibraryRoot;
}
