Merge remote-tracking branch 'origin/DRTVWR-543-maint_cmake' into DRTVWR-543-maint_cmake

1 files changed, 43 insertions, 0 deletions

diff --git a/indra/lib/python/indra/util/llmanifest.py b/indra/lib/python/indra/util/llmanifest.py
index 6705c86da9..820f356dae 100755
--- a/indra/lib/python/indra/util/llmanifest.py
+++ b/indra/lib/python/indra/util/llmanifest.py
@@ -880,6 +880,49 @@ class LLManifest(object, metaclass=LLManifestRegistry):
         # particular, let caller notice 0.
         return count
 
+    def path_optional(self, src, dst=None):
+        sys.stdout.flush()
+        if src == None:
+            raise ManifestError("No source file, dst is " + dst)
+        if dst == None:
+            dst = src
+        dst = os.path.join(self.get_dst_prefix(), dst)
+        sys.stdout.write("Processing %s => %s ... " % (src, self._relative_dst_path(dst)))
+
+        def try_path(src):
+            # expand globs
+            count = 0
+            if self.wildcard_pattern.search(src):
+                for s,d in self.expand_globs(src, dst):
+                    assert(s != d)
+                    count += self.process_file(s, d)
+            else:
+                # if we're specifying a single path (not a glob),
+                # we should error out if it doesn't exist
+                self.check_file_exists(src)
+                count += self.process_either(src, dst)
+            return count
+
+        try_prefixes = [self.get_src_prefix(), self.get_artwork_prefix(), self.get_build_prefix()]
+        for pfx in try_prefixes:
+            try:
+                count = try_path(os.path.join(pfx, src))
+            except MissingError:
+                # if we produce MissingError, just try the next prefix
+                continue
+            # If we actually found nonzero files, stop looking
+            if count:
+                break
+        else:
+            sys.stdout.write("Skipping %s\n" % (src))
+            return 0
+
+        print("%d files" % count)
+
+        # Let caller check whether we processed as many files as expected. In
+        # particular, let caller notice 0.
+        return count
+
     def do(self, *actions):
         self.actions = actions
         self.construct()