machfs/bin/DumpHFS

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#!/usr/bin/env python3
import argparse
import os
import os.path as path
from machfs import Volume, Folder, File
import macresources
def any_exists(at_path):
if path.exists(at_path): return True
if path.exists(at_path + '.rdump'): return True
if path.exists(at_path + '.idump'): return True
return False
args = argparse.ArgumentParser()
args.add_argument('src', metavar='INPUT', nargs=1, help='Disk image')
args.add_argument('dir', metavar='OUTPUT', nargs=1, help='Destination folder')
args = args.parse_args()
with open(args.src[0], 'rb') as f:
v = Volume()
v.read(f.read())
written = []
for p, obj in v.iter_paths():
nativepath = path.join(args.dir[0], *(comp.replace(path.sep, ':') for comp in p))
if isinstance(obj, Folder):
os.makedirs(nativepath, exist_ok=True)
elif obj.mddate != obj.bkdate or not any_exists(nativepath):
data = obj.data
if obj.type == b'TEXT':
data = data.decode('mac_roman').replace('\r', os.linesep).encode('utf8')
rsrc = obj.rsrc
if rsrc:
rsrc = macresources.parse_file(rsrc)
rsrc = macresources.make_rez_code(rsrc, ascii_clean=True)
info = obj.type + obj.creator
if info == b'????????': info = b''
for thing, suffix in ((data, ''), (rsrc, '.rdump'), (info, '.idump')):
wholepath = nativepath + suffix
if thing or (suffix == '' and not rsrc):
written.append(wholepath)
with open(written[-1], 'wb') as f:
f.write(thing)
else:
try:
os.remove(wholepath)
except FileNotFoundError:
pass
if written:
t = path.getmtime(written[-1])
for f in written:
os.utime(f, (t, t))