diff -r eb4c767522ac -r fde18c4d6784 filecache.py
--- a/filecache.py	Fri Sep 18 21:57:36 2020 +0300
+++ b/filecache.py	Fri Sep 18 23:51:45 2020 +0300
@@ -40,19 +40,12 @@
             self.problem = None
             self.has_studs = None # Whether or not it contains studs
             self.vertices = set()
-    def __init__(self, ldraw_directories):
+    def __init__(self, context):
         '''
             Initializes a new subfile cache
         '''
         self.cache = dict()
-        if ldraw_directories and isinstance(ldraw_directories[0], str):
-            self.ldraw_directories = [
-                Path(os.path.expanduser(directory))
-                for directory in ldraw_directories
-            ]
-        else:
-            from copy import copy
-            self.ldraw_directories = copy(ldraw_directories)
+        self.context = context
         self.reference_stack = []
     def flatness_of(self, filename):
         '''
@@ -69,7 +62,7 @@
     def find_file(self, filename):
         return find_ldraw_file(
             filename = filename,
-            libraries = self.ldraw_directories,
+            libraries = self.context.libraries,
         )
     def prepare_file(self, filename):
         '''
@@ -90,10 +83,7 @@
         try:
             path = self.find_file(filename)
             with path.open('rb') as file:
-                model = parse.read_ldraw(
-                    file,
-                    ldraw_directories = self.ldraw_directories,
-                )
+                model = parse.read_ldraw(file, context = self.context)
         except (FileNotFoundError, IOError, PermissionError) as error:
             subfile.valid = False
             subfile.problem = str(error)
@@ -129,6 +119,3 @@
                     for subfile_reference in model.subfile_references
                 )
         self.reference_stack.pop()
-
-if __name__ == '__main__':
-    cache = SubfileCache(ldraw_directories = ["~/ldraw"])