/Mac/Modules/qdoffs/qdoffssupport.py
http://unladen-swallow.googlecode.com/ · Python · 139 lines · 87 code · 20 blank · 32 comment · 2 complexity · 4ea0f946a27c6835b346f2b8ba14042b MD5 · raw file
- # 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 + """
- #include <Carbon/Carbon.h>
- #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(PEP253Mixin, GlobalObjectDefinition):
- # XXXX Should inherit from GrafPtr?
- 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()