propoagate pairs down inheritance trees

README.md

@@ -7,7 +7,7 @@ this repository contains a variety of tools for managing archives. from scanning
 i scan in all of my paper school- and coursework so i can refer to it in the future from the past.
 
 ## todo
-[ ] propogate pairs down inheritance trees
+[x] propogate pairs down inheritance trees
 
 ## license
 This is free and unencumbered software released into the public domain.

record.py

@@ -17,6 +17,8 @@ class Record:
         self.children = {}
         self.parents = {}
 
+        self.propagated = False
+
     def __getitem__(self, item):
         return self.data[item]
 
@@ -31,6 +33,7 @@ class RecordCollection():
         with filewrapper(file, "r") as fd:
             self._fromFile(fd)
         self._parent()
+        self._propagate()
 
     def _fromFile(self, fd):
         lines = [i.rstrip() for i in fd.readlines()]
@@ -112,3 +115,21 @@ class RecordCollection():
                 lines[i] += "\n"
 
             fd.writelines(lines)
+
+    def _resolveNode(self, node):
+        if not node.parents:
+            return
+        elif node.propagated:
+            return
+        else:
+            for i in node.parents:
+                if not node.parents[i].propagated:
+                    self._resolveNode(node.parents[i])
+                for j in node.parents[i].data:
+                    if not j in node.data:
+                        node.data[j] = node.parents[i].data[j]
+        node.propagated = True
+
+    def _propagate(self):
+        for i in self.objects:
+            self._resolveNode(self.objects[i])