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      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 import string
      7 
      8 # Declarations that change for each manager
      9 MACHEADERFILE = 'Menus.h'               # The Apple header file
     10 MODNAME = '_Menu'                       # The name of the module
     11 OBJECTNAME = 'Menu'                     # The basic name of the objects used here
     12 
     13 # The following is *usually* unchanged but may still require tuning
     14 MODPREFIX = 'Menu'                      # The prefix for module-wide routines
     15 OBJECTTYPE = OBJECTNAME + 'Handle'      # The C type used to represent them
     16 OBJECTPREFIX = MODPREFIX + 'Obj'        # The prefix for object methods
     17 INPUTFILE = string.lower(MODPREFIX) + 'gen.py' # The file generated by the scanner
     18 EXTRAFILE = string.lower(MODPREFIX) + 'edit.py' # A similar file but hand-made
     19 OUTPUTFILE = MODNAME + "module.c"       # The file generated by this program
     20 
     21 from macsupport import *
     22 
     23 # Create the type objects
     24 
     25 MenuHandle = OpaqueByValueType(OBJECTTYPE, OBJECTPREFIX)
     26 MenuRef = MenuHandle
     27 OptMenuRef = OpaqueByValueType(OBJECTTYPE, "Opt" + OBJECTPREFIX)
     28 Handle = OpaqueByValueType("Handle", "ResObj")
     29 MenuBarHandle = OpaqueByValueType("MenuBarHandle", "ResObj")
     30 MenuID = Type("MenuID", "h")
     31 MenuItemIndex = Type("MenuItemIndex", "h")
     32 MenuItemID = Type("MenuItemID", "l")
     33 MenuCommand = Type("MenuCommand", "l")
     34 MenuAttributes = Type("MenuAttributes", "l")
     35 MenuItemAttributes = Type("MenuItemAttributes", "l")
     36 unsigned_char = Type('unsigned char', 'b')
     37 FMFontFamily = Type("FMFontFamily", "h")
     38 FMFontStyle = Type("FMFontStyle", "h")
     39 UniChar = Type("UniChar", "h")
     40 
     41 includestuff = includestuff + """
     42 #include <Carbon/Carbon.h>
     43 
     44 
     45 #ifdef USE_TOOLBOX_OBJECT_GLUE
     46 
     47 extern PyObject *_MenuObj_New(MenuHandle);
     48 extern int _MenuObj_Convert(PyObject *, MenuHandle *);
     49 
     50 #define MenuObj_New _MenuObj_New
     51 #define MenuObj_Convert _MenuObj_Convert
     52 #endif
     53 
     54 #define as_Menu(h) ((MenuHandle)h)
     55 #define as_Resource(h) ((Handle)h)
     56 
     57 
     58 /* Alternative version of MenuObj_New, which returns None for NULL argument */
     59 PyObject *OptMenuObj_New(MenuRef itself)
     60 {
     61         if (itself == NULL) {
     62                 Py_INCREF(Py_None);
     63                 return Py_None;
     64         }
     65         return MenuObj_New(itself);
     66 }
     67 
     68 /* Alternative version of MenuObj_Convert, which returns NULL for a None argument */
     69 int OptMenuObj_Convert(PyObject *v, MenuRef *p_itself)
     70 {
     71         if ( v == Py_None ) {
     72                 *p_itself = NULL;
     73                 return 1;
     74         }
     75         return MenuObj_Convert(v, p_itself);
     76 }
     77 """
     78 
     79 initstuff = initstuff + """
     80         PyMac_INIT_TOOLBOX_OBJECT_NEW(MenuHandle, MenuObj_New);
     81         PyMac_INIT_TOOLBOX_OBJECT_CONVERT(MenuHandle, MenuObj_Convert);
     82 """
     83 
     84 class MyObjectDefinition(PEP253Mixin, GlobalObjectDefinition):
     85     pass
     86 
     87 # Create the generator groups and link them
     88 module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)
     89 object = MyObjectDefinition(OBJECTNAME, OBJECTPREFIX, OBJECTTYPE)
     90 module.addobject(object)
     91 
     92 # Create the generator classes used to populate the lists
     93 Function = OSErrWeakLinkFunctionGenerator
     94 Method = OSErrWeakLinkMethodGenerator
     95 
     96 # Create and populate the lists
     97 functions = []
     98 methods = []
     99 execfile(INPUTFILE)
    100 execfile(EXTRAFILE)
    101 
    102 # add the populated lists to the generator groups
    103 for f in functions: module.add(f)
    104 for f in methods: object.add(f)
    105 
    106 # generate output (open the output file as late as possible)
    107 SetOutputFileName(OUTPUTFILE)
    108 module.generate()
    109