Quick and Dirty Picotron .P64 Recursive Extractor

p64-extract.py

#!/usr/bin/env python

# Quick and Dirty Picotron .P64 Recursive Extractor v1.0
#
# MIT License
#
# Copyright (c) 2023 HTV04
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

import sys
import os
import re

def p64_extract(dir, p64):
	cwd = os.getcwd()

	os.mkdir(dir)
	os.chdir(dir)

	for line in p64.split('\n'):
		m = re.search(r'version (\d+)', line)
		if m:
			ver = m.group(1)
			if int(ver) > 1:
				print('Unsupported .P64 version: ' + ver)

		m = re.search(r'(.+) 00000000:00000001', line)
		if m: # Directory
			os.mkdir(os.path.normcase(m.group(1)))
		else:
			m = re.search(r'(.+) .+:.+ \[h (.+)\]', line)
			if m: # File
				file_data = bytearray.fromhex(m.group(2))

				if os.path.splitext(m.group(1))[1] == '.p64':
					p64_extract(os.path.normcase(m.group(1)), file_data.decode())
				else:
					with open(os.path.normcase(m.group(1)), 'wb') as f:
						f.write(file_data)

	os.chdir(cwd)

p64_extract(sys.argv[1] + '.out', open(sys.argv[1], 'r').read())