Allows to get a file absolute path from a revision id

tracim/tracim/lib/content.py

 import tg
 from tg.i18n import ugettext as _
 
+from depot.manager import DepotManager
+
 import sqlalchemy
 from sqlalchemy.orm import aliased
 from sqlalchemy.orm import joinedload
 
         return revision
 
+    # def get_one_revision_file(self, revision_id: int = None):
+    #     """
+    #     This function allows us to directly get a Python file object from its
+    #     revision identifier.
+    #     :param revision_id: The revision id of the file we want to return
+    #     :return: The corresponding Python file object
+    #     """
+    #     revision = self.get_one_revision(revision_id)
+    #     return DepotManager.get().get(revision.depot_file_uid)
+
+    def get_one_revision_filepath(self, revision_id: int = None) -> str:
+        """
+        This method allows us to directly get a file path from its revision
+        identifier.
+        :param revision_id: The revision id of the filepath we want to return
+        :return: The corresponding filepath
+        """
+        revision = self.get_one_revision(revision_id)
+
+        dpt = DepotManager.get()
+        # python 3.6 PEP 526 -- Syntax for Variable Annotations
+        # https://www.python.org/dev/peps/pep-0526/
+        # dpt_path: str = dpt.storage_path
+        # dpt_file_dir: str = item.revision.depot_file_uid.file_id
+        # dpt_file_path: str = dpt_path + dpt_file_dir + dpt_file_name
+        dpt_path = dpt.storage_path
+        dpt_file_dir = revision.depot_file_uid.file_id
+        dpt_file_path = '{0}{1}/file'.format(dpt_path, dpt_file_dir)
+
+        return file_from_depot.name
+
     def get_one_by_label_and_parent(
             self,
             content_label: str,