tbxi/tbxi/dispatcher.py

79 lines
1.8 KiB
Python

import importlib
from subprocess import run, PIPE
import os
from os import path
FORMATS = '''
bootinfo
parcels
powerpc
supermario
'''.split()
class WrongFormat(Exception):
pass
def build_dir(p):
for fmt in FORMATS:
mod = importlib.import_module('..%s_build' % fmt, __name__)
try:
data = mod.build(p)
except WrongFormat:
continue
print(fmt)
return data
raise WrongFormat
def build_path(p):
parent = path.dirname(path.abspath(p))
name = path.basename(path.abspath(p))
# try building the file from a directory
for np in [p + '.src', p]:
try:
data = build_dir(p)
except WrongFormat:
pass
else:
break
else:
# fall back on just reading the file (boring, I know!)
with open(p, 'rb') as f:
data = f.read()
# Search the directory of the file for executable patches
for sib in sorted(os.scandir(parent), key=lambda ent: ent.name):
# Does the filename match?
if sib.name.startswith(name) and 'patch' in sib.name[len(name):]:
# This is a bit unsafe, so prompt the user (to pipe in `yes`...)
if input('Apply %s to %s? [y/N]' % (sib.name, name)).lower().startswith('y'):
result = run([sib.path], cwd=parent, stdin=data, stdout=PIPE, check=True)
data = result.stdout
return data
def dump(binary, dest_path, toplevel=False):
if not toplevel:
with open(dest_path, 'wb') as f:
f.write(binary)
dest_path += '.src'
for fmt in FORMATS:
mod = importlib.import_module('..%s_dump' % fmt, __name__)
try:
mod.dump(binary, dest_path)
did_dump = True
break
except WrongFormat:
pass