95 lines
2.1 KiB
Python
95 lines
2.1 KiB
Python
|
"""Mac-only module to find the home file of a resource."""
|
||
|
|
|
||
|
|
import sstruct
|
||
|
|
import array
|
||
|
|
import calldll
|
||
|
|
import macfs, Res
|
||
|
|
|
||
|
|
|
||
|
|
def HomeResFile(res):
|
||
|
|
"""Return a path to the file in which resource 'res' lives."""
|
||
|
|
return GetFileLocation(res.HomeResFile())
|
||
|
|
|
||
|
|
|
||
|
|
def GetFileLocation(refNum):
|
||
|
|
"""Return a path to the open file identified with refNum."""
|
||
|
|
pb = ParamBlock(refNum)
|
||
|
|
return pb.getPath()
|
||
|
|
|
||
|
|
#
|
||
|
|
# Internal cruft, adapted from MoreFiles
|
||
|
|
#
|
||
|
|
|
||
|
|
_InterfaceLib = calldll.getlibrary("InterfaceLib")
|
||
|
|
GetVRefNum = calldll.newcall(_InterfaceLib.GetVRefNum, "None", "InShort", "OutShort")
|
||
|
|
_getInfo = calldll.newcall(_InterfaceLib.PBGetFCBInfoSync, "Short", "InLong")
|
||
|
|
|
||
|
|
|
||
|
|
_FCBPBFormat = """
|
||
|
|
qLink: l
|
||
|
|
qType: h
|
||
|
|
ioTrap: h
|
||
|
|
ioCmdAddr: l
|
||
|
|
ioCompletion: l
|
||
|
|
ioResult: h
|
||
|
|
ioNamePtr: l
|
||
|
|
ioVRefNum: h
|
||
|
|
ioRefNum: h
|
||
|
|
filler: h
|
||
|
|
ioFCBIndx: h
|
||
|
|
filler1: h
|
||
|
|
ioFCBFINm: l
|
||
|
|
ioFCBFlags: h
|
||
|
|
ioFCBStBlk: h
|
||
|
|
ioFCBEOF: l
|
||
|
|
ioFCBPLen: l
|
||
|
|
ioFCBCrPs: l
|
||
|
|
ioFCBVRefNum: h
|
||
|
|
ioFCBClpSiz: l
|
||
|
|
ioFCBParID: l
|
||
|
|
"""
|
||
|
|
|
||
|
|
class ParamBlock:
|
||
|
|
|
||
|
|
"""Wrapper for the very low level FCBPB record."""
|
||
|
|
|
||
|
|
def __init__(self, refNum):
|
||
|
|
self.__fileName = array.array("c", "\0" * 64)
|
||
|
|
sstruct.unpack(_FCBPBFormat,
|
||
|
|
"\0" * sstruct.calcsize(_FCBPBFormat), self)
|
||
|
|
self.ioNamePtr = self.__fileName.buffer_info()[0]
|
||
|
|
self.ioRefNum = refNum
|
||
|
|
self.ioVRefNum = GetVRefNum(refNum)
|
||
|
|
self.__haveInfo = 0
|
||
|
|
|
||
|
|
def getInfo(self):
|
||
|
|
if self.__haveInfo:
|
||
|
|
return
|
||
|
|
data = sstruct.pack(_FCBPBFormat, self)
|
||
|
|
buf = array.array("c", data)
|
||
|
|
ptr = buf.buffer_info()[0]
|
||
|
|
err = _getInfo(ptr)
|
||
|
|
if err:
|
||
|
|
raise Res.Error, ("can't get file info", err)
|
||
|
|
sstruct.unpack(_FCBPBFormat, buf.tostring(), self)
|
||
|
|
self.__haveInfo = 1
|
||
|
|
|
||
|
|
def getFileName(self):
|
||
|
|
self.getInfo()
|
||
|
|
data = self.__fileName.tostring()
|
||
|
|
return data[1:ord(data[0])+1]
|
||
|
|
|
||
|
|
def getFSSpec(self):
|
||
|
|
self.getInfo()
|
||
|
|
vRefNum = self.ioVRefNum
|
||
|
|
parID = self.ioFCBParID
|
||
|
|
return macfs.FSSpec((vRefNum, parID, self.getFileName()))
|
||
|
|
|
||
|
|
def getPath(self):
|
||
|
|
return self.getFSSpec().as_pathname()
|
||
|
|
|
||
|
|
|
||
|
|
if __name__ == "__main__":
|
||
|
|
fond = Res.GetNamedResource("FOND", "Helvetica")
|
||
|
|
print HomeResFile(fond)
|