| # This script generates a Python interface for an Apple Macintosh Manager. |
| # It uses the "bgen" package to generate C code. |
| # The function specifications are generated by scanning the mamager's header file, |
| # using the "scantools" package (customized for this particular manager). |
| |
| import string |
| |
| # Declarations that change for each manager |
| MACHEADERFILE = 'QDOffscreen.h' # The Apple header file |
| MODNAME = '_Qdoffs' # The name of the module |
| OBJECTNAME = 'GWorld' # The basic name of the objects used here |
| |
| # The following is *usually* unchanged but may still require tuning |
| MODPREFIX = 'Qdoffs' # The prefix for module-wide routines |
| OBJECTTYPE = OBJECTNAME + 'Ptr' # The C type used to represent them |
| OBJECTPREFIX = OBJECTNAME + 'Obj' # The prefix for object methods |
| INPUTFILE = string.lower(MODPREFIX) + 'gen.py' # The file generated by the scanner |
| #EDITFILE = string.lower(MODPREFIX) + 'edit.py' # The manual definitions |
| OUTPUTFILE = MODNAME + "module.c" # The file generated by this program |
| |
| from macsupport import * |
| |
| # Create the type objects |
| |
| GWorldPtr = OpaqueByValueType(OBJECTTYPE, OBJECTPREFIX) |
| GWorldFlags = Type("GWorldFlags", "l") |
| GDHandle = OpaqueByValueType("GDHandle", "ResObj") |
| OptGDHandle = OpaqueByValueType("GDHandle", "OptResObj") |
| CTabHandle = OpaqueByValueType("CTabHandle", "OptResObj") |
| PixPatHandle = OpaqueByValueType("PixPatHandle", "ResObj") |
| PixMapHandle = OpaqueByValueType("PixMapHandle", "ResObj") |
| CGrafPtr = OpaqueByValueType("CGrafPtr", "GrafObj") |
| GrafPtr = OpaqueByValueType("GrafPtr", "GrafObj") |
| QDErr = OSErrType("QDErr", 'h') |
| |
| includestuff = includestuff + """ |
| #ifdef WITHOUT_FRAMEWORKS |
| #include <QDOffscreen.h> |
| #else |
| #include <Carbon/Carbon.h> |
| #endif |
| |
| #ifdef USE_TOOLBOX_OBJECT_GLUE |
| extern PyObject *_GWorldObj_New(GWorldPtr); |
| extern int _GWorldObj_Convert(PyObject *, GWorldPtr *); |
| |
| #define GWorldObj_New _GWorldObj_New |
| #define GWorldObj_Convert _GWorldObj_Convert |
| #endif |
| |
| #define as_GrafPtr(gworld) ((GrafPtr)(gworld)) |
| |
| """ |
| |
| initstuff = initstuff + """ |
| PyMac_INIT_TOOLBOX_OBJECT_NEW(GWorldPtr, GWorldObj_New); |
| PyMac_INIT_TOOLBOX_OBJECT_CONVERT(GWorldPtr, GWorldObj_Convert); |
| """ |
| |
| class MyObjectDefinition(GlobalObjectDefinition): |
| def outputCheckNewArg(self): |
| Output("if (itself == NULL) return PyMac_Error(resNotFound);") |
| ## def outputInitStructMembers(self): |
| ## GlobalObjectDefinition.outputInitStructMembers(self) |
| ## Output("SetWRefCon(itself, (long)it);") |
| ## def outputCheckConvertArg(self): |
| ## OutLbrace("if (DlgObj_Check(v))") |
| ## Output("*p_itself = ((WindowObject *)v)->ob_itself;") |
| ## Output("return 1;") |
| ## OutRbrace() |
| ## Out(""" |
| ## if (v == Py_None) { *p_itself = NULL; return 1; } |
| ## if (PyInt_Check(v)) { *p_itself = (WindowPtr)PyInt_AsLong(v); return 1; } |
| ## """) |
| def outputFreeIt(self, itselfname): |
| Output("DisposeGWorld(%s);", itselfname) |
| # From here on it's basically all boiler plate... |
| |
| # Create the generator groups and link them |
| module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff) |
| object = MyObjectDefinition(OBJECTNAME, OBJECTPREFIX, OBJECTTYPE) |
| module.addobject(object) |
| |
| |
| # Create the generator classes used to populate the lists |
| Function = OSErrWeakLinkFunctionGenerator |
| Method = OSErrWeakLinkMethodGenerator |
| |
| # Create and populate the lists |
| functions = [] |
| methods = [] |
| execfile(INPUTFILE) |
| |
| # A method to convert a GWorldPtr to a GrafPtr |
| f = Method(GrafPtr, 'as_GrafPtr', (GWorldPtr, 'p', InMode)) |
| methods.append(f) |
| |
| # |
| # Manual generator: get data out of a pixmap |
| pixmapgetbytes_body = """ |
| PixMapHandle pm; |
| int from, length; |
| char *cp; |
| |
| if ( !PyArg_ParseTuple(_args, "O&ii", ResObj_Convert, &pm, &from, &length) ) |
| return NULL; |
| cp = GetPixBaseAddr(pm)+from; |
| _res = PyString_FromStringAndSize(cp, length); |
| return _res; |
| """ |
| f = ManualGenerator("GetPixMapBytes", pixmapgetbytes_body) |
| f.docstring = lambda: """(pixmap, int start, int size) -> string. Return bytes from the pixmap""" |
| functions.append(f) |
| |
| # Manual generator: store data in a pixmap |
| pixmapputbytes_body = """ |
| PixMapHandle pm; |
| int from, length; |
| char *cp, *icp; |
| |
| if ( !PyArg_ParseTuple(_args, "O&is#", ResObj_Convert, &pm, &from, &icp, &length) ) |
| return NULL; |
| cp = GetPixBaseAddr(pm)+from; |
| memcpy(cp, icp, length); |
| Py_INCREF(Py_None); |
| _res = Py_None; |
| return _res; |
| """ |
| f = ManualGenerator("PutPixMapBytes", pixmapputbytes_body) |
| f.docstring = lambda: """(pixmap, int start, string data). Store bytes into the pixmap""" |
| functions.append(f) |
| |
| # add the populated lists to the generator groups |
| # (in a different wordl the scan program would generate this) |
| for f in functions: module.add(f) |
| for f in methods: object.add(f) |
| |
| |
| |
| # generate output (open the output file as late as possible) |
| SetOutputFileName(OUTPUTFILE) |
| module.generate() |