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