Macintosh-Tools/machfs
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Handle creation, mod and bkup dates consistently

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Elliot Nunn 2018-10-23 12:52:24 +08:00
parent ddc8445771
commit 793fa1e44a
1 changed files with 9 additions and 13 deletions
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22
machfs/main.py
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@ -91,7 +91,7 @@ class Folder(directory.AbstractFolder):
self.x = 0 # where to put this spatially?
self.y = 0
self.crdat = self.mddat = self.bkdat = 0
self.crdate = self.mddate = self.bkdate = 0
class File:
@ -103,7 +103,7 @@ class File:
self.y = 0
self.locked = False
self.crdat = self.mddat = self.bkdat = 0
self.crdate = self.mddate = self.bkdate = 0
self.rsrc = bytearray()
self.data = bytearray()
@ -119,8 +119,7 @@ class Volume(directory.AbstractFolder):
super().__init__()
self.bootblocks = bytes(1024) # optional; for booting HFS volumes
self.crdate = 0 # date and time of volume creation
self.lsmod = 0 # date and time of last modification
self.crdate = self.mddate = self.bkdate = 0
self.name = 'Untitled'
def read(self, from_volume):
@ -135,9 +134,7 @@ class Volume(directory.AbstractFolder):
drCTFlSize, drCTExtRec, \
= struct.unpack_from('>2sLLHHHHHLLHLH28pLHLLLHLL32sHHHL12sL12s', from_volume, 1024)
self.crdate = drCrDate
self.lsmod = drLsMod
self.name = drVN.decode('mac_roman')
self.crdate, self.mddate, self.bkdate = drCrDate, drLsMod, drVolBkUp
block2offset = lambda block: 512*drAlBlSt + drAlBlkSiz*block
getextents = lambda extents: b''.join(from_volume[block2offset(firstblk):block2offset(firstblk+blkcnt)] for (firstblk, blkcnt) in extents)
@ -188,7 +185,7 @@ class Volume(directory.AbstractFolder):
cnids[dirDirID] = f
childlist.append((ckrParID, ckrCName, f))
f.crdat, f.mddat, f.bkdat = dirCrDat, dirMdDat, dirBkDat
f.crdate, f.mddate, f.bkdate = dirCrDat, dirMdDat, dirBkDat
elif datatype == 'file':
filFlags, filTyp, filUsrWds, filFlNum, \
@ -203,7 +200,7 @@ class Volume(directory.AbstractFolder):
cnids[filFlNum] = f
childlist.append((ckrParID, ckrCName, f))
f.crdat, f.mddat, f.bkdat = filCrDat, filMdDat, filBkDat
f.crdate, f.mddate, f.bkdate = filCrDat, filMdDat, filBkDat
f.type, f.creator, f.flags, f.x, f.y = struct.unpack_from('>4s4sHHH', filUsrWds)
f.data = getfork(filLgLen, filExtRec, filFlNum, 'data')
@ -313,7 +310,7 @@ class Volume(directory.AbstractFolder):
filFlNum = wrap.cnid
filStBlk, filLgLen, filPyLen = wrap.dfrk[0], len(obj.data), bitmanip.pad_up(len(obj.data), drAlBlkSiz)
filRStBlk, filRLgLen, filRPyLen = wrap.rfrk[0], len(obj.rsrc), bitmanip.pad_up(len(obj.rsrc), drAlBlkSiz)
filCrDat, filMdDat, filBkDat = obj.crdat, obj.mddat, obj.bkdat
filCrDat, filMdDat, filBkDat = obj.crdate, obj.mddate, obj.bkdate
filFndrInfo = bytes(16) # todo must fix
filClpSize = 0 # todo must fix
filExtRec = struct.pack('>HHHHHH', *wrap.dfrk, 0, 0, 0, 0)
@ -336,7 +333,7 @@ class Volume(directory.AbstractFolder):
dirFlags = 0 # must fix
dirVal = len(wrap.of)
dirDirID = wrap.cnid
dirCrDat, dirMdDat, dirBkDat = (0,0,0) if obj is self else (obj.crdat, obj.mddat, obj.bkdat)
dirCrDat, dirMdDat, dirBkDat = obj.crdate, obj.mddate, obj.bkdate
dirUsrInfo = bytes(16)
dirFndrInfo = bytes(16)
mainrec_val = struct.pack('>BxHHLLLL16s16sxxxxxxxxxxxxxxxx',
@ -385,8 +382,7 @@ class Volume(directory.AbstractFolder):
drVolBkUp = 0 # date and time of last backup
drVSeqNum = 0 # volume backup sequence number
drFndrInfo = bytes(32) # information used by the Finder
drCrDate = self.crdate
drLsMod = self.lsmod
drCrDate, drLsMod, drVolBkUp = self.crdate, self.mddate, self.bkdate
if not (1 <= len(drVN) <= 27):
raise ValueError('Volume name range 1-27 chars')