Mac/Modules/scrap/scrapsupport.py

   1 # This script generates a Python interface for an Apple Macintosh Manager.
   2 # It uses the "bgen" package to generate C code.
   3 # The function specifications are generated by scanning the mamager's header file,
   4 # using the "scantools" package (customized for this particular manager).
   5
   6 # NOTE: the scrap include file is so bad that the bgen output has to be
   7 # massaged by hand.
   8
   9 import string
  10
  11 # Declarations that change for each manager
  12 MACHEADERFILE = 'Scrap.h'               # The Apple header file
  13 MODNAME = 'Scrap'                               # The name of the module
  14
  15 # The following is *usually* unchanged but may still require tuning
  16 MODPREFIX = MODNAME                     # The prefix for module-wide routines
  17 INPUTFILE = string.lower(MODPREFIX) + 'gen.py' # The file generated by the scanner
  18 OUTPUTFILE = '@' + MODNAME + "module.c" # The file generated by this program
  19
  20 from macsupport import *
  21
  22 # Create the type objects
  23
  24 includestuff = includestuff + """
  25 #include <%s>""" % MACHEADERFILE + """
  26
  27 /*
  28 ** Generate ScrapInfo records
  29 */
  30 static PyObject *
  31 SCRRec_New(itself)
  32         ScrapStuff *itself;
  33 {
  34
  35         return Py_BuildValue("lO&hhO&", itself->scrapSize,
  36                 ResObj_New, itself->scrapHandle, itself->scrapCount, itself->scrapState,
  37                 PyMac_BuildStr255, itself->scrapName);
  38 }
  39 """
  40
  41 ScrapStuffPtr = OpaqueByValueType('ScrapStuffPtr', 'SCRRec')
  42 ScrapFlavorType = OSTypeType('ScrapFlavorType')
  43 putscrapbuffer = FixedInputBufferType('void *')
  44
  45 # Create the generator groups and link them
  46 module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)
  47
  48 # Create the generator classes used to populate the lists
  49 Function = OSErrFunctionGenerator
  50
  51 # Create and populate the lists
  52 functions = []
  53 execfile(INPUTFILE)
  54
  55 # add the populated lists to the generator groups
  56 # (in a different wordl the scan program would generate this)
  57 for f in functions: module.add(f)
  58
  59 # generate output (open the output file as late as possible)
  60 SetOutputFileName(OUTPUTFILE)
  61 module.generate()
  62