/**
* Finds and validates the resource directory PathFragment from the artifact Path.
*
* <p>If the artifact is not a Fileset, the resource directory is presumed to be the second
* directory from the end. Filesets are expect to have the last directory as the resource
* directory.
*/
public static PathFragment findResourceDir(Artifact artifact) {
PathFragment fragment = artifact.getPath().asFragment();
int segmentCount = fragment.segmentCount();
if (segmentCount < 3) {
return null;
}
// TODO(bazel-team): Expand Fileset to verify, or remove Fileset as an option for resources.
if (artifact.isFileset()) {
return fragment.subFragment(segmentCount - 1, segmentCount);
}
// Check the resource folder type layout.
// get the prefix of the parent folder of the fragment.
String parentDirectory = fragment.getSegment(segmentCount - 2);
int dashIndex = parentDirectory.indexOf('-');
String androidFolder =
dashIndex == -1 ? parentDirectory : parentDirectory.substring(0, dashIndex);
if (!RESOURCE_DIRECTORY_TYPES.contains(androidFolder)) {
return null;
}
return fragment.subFragment(segmentCount - 3, segmentCount - 2);
}
