separate high lower from low level

[bjuergens]

Background: dirhash.py contains lots of different functions and no classes.

Problem: it's getting crowded

Solution: Separation of concerns by splitting the functions in to classes:

• one class for low-level hashing stuff: This are pretty much all private function, and a couple of public ones
• one class for high-level file-handling-stuff and wrapper for low-level stuff.

todo:

• choose name for the 2 classes. some first ideas:
  • hash_driver and handler/frontend
  • dirhash and handler
• move functions, and add private members, class-variables, constructors, etc. accordingly
• get rid of most global vars (turn them into private members in their respective class)
• update dirhash_test.py
• update run.sh

[bjuergens]

related: #14

[bjuergens]

example for highlevel:

• _build_hash_string
• _parse_hash_string
• verify_directory_hash

example for low-level:

• _file_chunks
• _hash_chunk

example for not maybe:

• • hash_directory_raw

---

maybe even add more classes:

• 1 class for raw hashing
• 1 class for wrapping of raw-hasing
• 1 class for command-handling

[bjuergens]

while we are at it, we should also move the python-source into a sub folder, too