Macintosh-Tools/machfs
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Create minimal Desktop Database

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This contains no useful information, but prevents a lengthy search of
the volume at startup. Eventually this should be replaced with a real
desktop database.
This commit is contained in:
Elliot Nunn 2018-10-23 17:33:20 +08:00
parent 9819375497
commit 46314c4747
2 changed files with 24 additions and 1 deletions
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24
machfs/main.py
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@ -1,4 +1,5 @@
import struct
from macresources import Resource, make_file
from . import btree, bitmanip, directory
@ -218,7 +219,7 @@ class Volume(directory.AbstractFolder):
self.update(cnids[2])
def write(self, size=800*1024, align=512):
def write(self, size=800*1024, align=512, desktopdb=True):
if align < 512 or align % 512:
raise ValueError('align must be multiple of 512')
@ -267,6 +268,25 @@ class Volume(directory.AbstractFolder):
godwrap = _TempWrapper(None)
godwrap.cnid = 1
root_dict_backup = self._prefdict
if desktopdb:
self._prefdict = dict(self._prefdict)
f = File()
f.type, f.creator = b'FNDR', b'ERIK'
f.flags = 0x4000 # invisible
f.rsrc = make_file([Resource(b'STR ', 0, data=b'\x0AFinder 1.0')])
self['Desktop'] = f
if size >= 2*1024*1024:
f = File()
f.type, f.creator = b'BTFL', b'DMGR'
f.flags = 0x4000
f.data = btree.make_btree([], bthKeyLen=37, blksize=drAlBlkSiz)
self['Desktop DB'] = f
f = File()
f.type, f.creator = b'DTFL', b'DMGR'
f.flags = 0x4000
self['Desktop DF'] = f
path2wrap = {(): godwrap, (self.name,): topwrap}
drNxtCNID = 16
for path, obj in self.iter_paths():
@ -287,6 +307,8 @@ class Volume(directory.AbstractFolder):
blkaccum.extend(bitmanip.chunkify(obj.rsrc, drAlBlkSiz))
wrap.rfrk = (pre, len(blkaccum)-pre)
self._prefdict = root_dict_backup
catalog = [] # (key, value) tuples
drFilCnt = 0

1
setup.py
View File

@ -18,4 +18,5 @@ setup(
'Development Status :: 3 - Alpha',
],
packages=['machfs'],
install_requires=['macresources'],
)