8413c108d2
Our footprint in the Python module namespace is all under fontTools now. User code importing sstruct should be updated to say "from fontTools.misc import sstruct".
95 lines
2.1 KiB
Python
95 lines
2.1 KiB
Python
"""Mac-only module to find the home file of a resource."""
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from fontTools.misc import sstruct
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import array
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import calldll
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import macfs, Res
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def HomeResFile(res):
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"""Return a path to the file in which resource 'res' lives."""
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return GetFileLocation(res.HomeResFile())
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def GetFileLocation(refNum):
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"""Return a path to the open file identified with refNum."""
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pb = ParamBlock(refNum)
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return pb.getPath()
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#
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# Internal cruft, adapted from MoreFiles
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#
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_InterfaceLib = calldll.getlibrary("InterfaceLib")
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GetVRefNum = calldll.newcall(_InterfaceLib.GetVRefNum, "None", "InShort", "OutShort")
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_getInfo = calldll.newcall(_InterfaceLib.PBGetFCBInfoSync, "Short", "InLong")
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_FCBPBFormat = """
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qLink: l
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qType: h
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ioTrap: h
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ioCmdAddr: l
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ioCompletion: l
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ioResult: h
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ioNamePtr: l
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ioVRefNum: h
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ioRefNum: h
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filler: h
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ioFCBIndx: h
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filler1: h
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ioFCBFINm: l
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ioFCBFlags: h
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ioFCBStBlk: h
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ioFCBEOF: l
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ioFCBPLen: l
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ioFCBCrPs: l
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ioFCBVRefNum: h
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ioFCBClpSiz: l
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ioFCBParID: l
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"""
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class ParamBlock:
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"""Wrapper for the very low level FCBPB record."""
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def __init__(self, refNum):
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self.__fileName = array.array("c", "\0" * 64)
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sstruct.unpack(_FCBPBFormat,
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"\0" * sstruct.calcsize(_FCBPBFormat), self)
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self.ioNamePtr = self.__fileName.buffer_info()[0]
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self.ioRefNum = refNum
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self.ioVRefNum = GetVRefNum(refNum)
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self.__haveInfo = 0
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def getInfo(self):
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if self.__haveInfo:
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return
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data = sstruct.pack(_FCBPBFormat, self)
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buf = array.array("c", data)
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ptr = buf.buffer_info()[0]
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err = _getInfo(ptr)
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if err:
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raise Res.Error, ("can't get file info", err)
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sstruct.unpack(_FCBPBFormat, buf.tostring(), self)
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self.__haveInfo = 1
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def getFileName(self):
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self.getInfo()
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data = self.__fileName.tostring()
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return data[1:ord(data[0])+1]
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def getFSSpec(self):
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self.getInfo()
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vRefNum = self.ioVRefNum
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parID = self.ioFCBParID
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return macfs.FSSpec((vRefNum, parID, self.getFileName()))
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def getPath(self):
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return self.getFSSpec().as_pathname()
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if __name__ == "__main__":
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fond = Res.GetNamedResource("FOND", "Helvetica")
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print HomeResFile(fond)
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