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 OBJECTNAME = 'Scrap'                    # The basic name of the objects used here
  15
  16 # The following is *usually* unchanged but may still require tuning
  17 MODPREFIX = 'Scrap'                     # The prefix for module-wide routines
  18 OBJECTTYPE = OBJECTNAME + 'Ref' # The C type used to represent them
  19 OBJECTPREFIX = MODPREFIX + 'Obj'        # The prefix for object methods
  20 INPUTFILE = string.lower(MODPREFIX) + 'gen.py' # The file generated by the scanner
  21 OUTPUTFILE = '@' + MODNAME + "module.c" # The file generated by this program
  22
  23 from macsupport import *
  24
  25 # Create the type objects
  26 ScrapRef = OpaqueByValueType(OBJECTTYPE, OBJECTPREFIX)
  27
  28 includestuff = includestuff + """
  29 #ifdef WITHOUT_FRAMEWORKS
  30 #include <Scrap.h>
  31 #else
  32 #include <Carbon/Carbon.h>
  33 #endif
  34
  35 /*
  36 ** Generate ScrapInfo records
  37 */
  38 static PyObject *
  39 SCRRec_New(itself)
  40         ScrapStuff *itself;
  41 {
  42
  43         return Py_BuildValue("lO&hhO&", itself->scrapSize,
  44                 ResObj_New, itself->scrapHandle, itself->scrapCount, itself->scrapState,
  45                 PyMac_BuildStr255, itself->scrapName);
  46 }
  47 """
  48
  49 ScrapStuffPtr = OpaqueByValueType('ScrapStuffPtr', 'SCRRec')
  50 ScrapFlavorType = OSTypeType('ScrapFlavorType')
  51 ScrapFlavorFlags = Type('ScrapFlavorFlags', 'l')
  52 #ScrapFlavorInfo = OpaqueType('ScrapFlavorInfo', 'ScrapFlavorInfo')
  53 putscrapbuffer = FixedInputBufferType('void *')
  54
  55 class MyObjectDefinition(GlobalObjectDefinition):
  56         pass
  57
  58 # Create the generator groups and link them
  59 module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)
  60 object = MyObjectDefinition(OBJECTNAME, OBJECTPREFIX, OBJECTTYPE)
  61 module.addobject(object)
  62
  63 # Create the generator classes used to populate the lists
  64 Function = OSErrFunctionGenerator
  65 Method = OSErrMethodGenerator
  66
  67 # Create and populate the lists
  68 functions = []
  69 methods = []
  70 execfile(INPUTFILE)
  71
  72 # add the populated lists to the generator groups
  73 # (in a different wordl the scan program would generate this)
  74 for f in functions: module.add(f)
  75 for f in methods: object.add(f)
  76
  77 # generate output (open the output file as late as possible)
  78 SetOutputFileName(OUTPUTFILE)
  79 module.generate()
  80