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# 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
import addpack
addpack.addpack(':Tools:bgen:bgen')
# Declarations that change for each manager
MACHEADERFILE = 'QuickDraw.h' # The Apple header file
MODNAME = 'Qd' # The name of the module
OBJECTNAME = 'Graf' # The basic name of the objects used here
# The following is *usually* unchanged but may still require tuning
MODPREFIX = MODNAME # The prefix for module-wide routines
OBJECTTYPE = OBJECTNAME + 'Ptr' # The C type used to represent them
OBJECTPREFIX = MODPREFIX + 'Obj' # The prefix for object methods
INPUTFILE = string.lower(MODPREFIX) + 'gen.py' # The file generated by the scanner
EXTRAFILE = string.lower(MODPREFIX) + 'edit.py' # A similar file but hand-made
OUTPUTFILE = MODNAME + "module.c" # The file generated by this program
from macsupport import *
# Create the type objects
class TextThingieClass(FixedInputBufferType):
def getargsCheck(self, name):
pass
TextThingie = TextThingieClass(None)
# These are temporary!
RgnHandle = OpaqueByValueType("RgnHandle", "ResObj")
PicHandle = OpaqueByValueType("PicHandle", "ResObj")
PolyHandle = OpaqueByValueType("PolyHandle", "ResObj")
PixMapHandle = OpaqueByValueType("PixMapHandle", "ResObj")
PixPatHandle = OpaqueByValueType("PixPatHandle", "ResObj")
PatHandle = OpaqueByValueType("PatHandle", "ResObj")
CursHandle = OpaqueByValueType("CursHandle", "ResObj")
CGrafPtr = OpaqueByValueType("CGrafPtr", "GrafObj")
GrafPtr = OpaqueByValueType("GrafPtr", "GrafObj")
BitMap_ptr = OpaqueByValueType("BitMapPtr", "BMObj")
RGBColor = OpaqueType('RGBColor', 'QdRGB')
RGBColor_ptr = RGBColor
includestuff = includestuff + """
#include <%s>""" % MACHEADERFILE + """
#include <Desk.h>
#define resNotFound -192 /* Can't include <Errors.h> because of Python's "errors.h" */
/*
** Parse/generate RGB records
*/
PyObject *QdRGB_New(itself)
RGBColorPtr itself;
{
return Py_BuildValue("lll", (long)itself->red, (long)itself->green, (long)itself->blue);
}
QdRGB_Convert(v, p_itself)
PyObject *v;
RGBColorPtr p_itself;
{
long red, green, blue;
if( !PyArg_ParseTuple(v, "lll", &red, &green, &blue) )
return 0;
p_itself->red = (unsigned short)red;
p_itself->green = (unsigned short)green;
p_itself->blue = (unsigned short)blue;
return 1;
}
"""
## not yet...
##
##class Region_ObjectDefinition(GlobalObjectDefinition):
## def outputCheckNewArg(self):
## Output("if (itself == NULL) return PyMac_Error(resNotFound);")
## def outputFreeIt(self, itselfname):
## Output("DisposeRegion(%s);", itselfname)
##
##class Polygon_ObjectDefinition(GlobalObjectDefinition):
## def outputCheckNewArg(self):
## Output("if (itself == NULL) return PyMac_Error(resNotFound);")
## def outputFreeIt(self, itselfname):
## Output("KillPoly(%s);", itselfname)
class MyGRObjectDefinition(GlobalObjectDefinition):
def outputCheckNewArg(self):
Output("if (itself == NULL) return PyMac_Error(resNotFound);")
def outputCheckConvertArg(self):
OutLbrace("if (DlgObj_Check(v) || WinObj_Check(v))")
Output("*p_itself = ((GrafPortObject *)v)->ob_itself;")
Output("return 1;")
OutRbrace()
def outputGetattrHook(self):
Output("""if ( strcmp(name, "device") == 0 )
return PyInt_FromLong((long)self->ob_itself->device);
if ( strcmp(name, "portBits") == 0 )
return BMObj_New(&self->ob_itself->portBits);
if ( strcmp(name, "portRect") == 0 )
return Py_BuildValue("O&", PyMac_BuildRect, &self->ob_itself->portRect);
/* XXXX Add more, as needed */
""")
class MyBMObjectDefinition(GlobalObjectDefinition):
def outputCheckNewArg(self):
Output("if (itself == NULL) return PyMac_Error(resNotFound);")
def outputStructMembers(self):
# We need to more items: a pointer to privately allocated data
# and a python object we're referring to.
Output("%s ob_itself;", self.itselftype)
Output("PyObject *referred_object;")
Output("BitMap *referred_bitmap;")
def outputInitStructMembers(self):
Output("it->ob_itself = %sitself;", self.argref)
Output("it->referred_object = NULL;")
Output("it->referred_bitmap = NULL;")
def outputCleanupStructMembers(self):
Output("Py_XDECREF(self->referred_object);")
Output("if (self->referred_bitmap) free(self->referred_bitmap);")
def outputGetattrHook(self):
Output("""if ( strcmp(name, "baseAddr") == 0 )
return PyInt_FromLong((long)self->ob_itself->baseAddr);
if ( strcmp(name, "rowBytes") == 0 )
return PyInt_FromLong((long)self->ob_itself->rowBytes);
if ( strcmp(name, "bounds") == 0 )
return Py_BuildValue("O&", PyMac_BuildRect, &self->ob_itself->bounds);
/* XXXX Add more, as needed */
""")
# Create the generator groups and link them
module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)
##r_object = Region_ObjectDefinition('Region', 'QdRgn', 'RgnHandle')
##po_object = Polygon_ObjectDefinition('Polygon', 'QdPgn', 'PolyHandle')
##module.addobject(r_object)
##module.addobject(po_object)
gr_object = MyGRObjectDefinition("GrafPort", "GrafObj", "GrafPtr")
module.addobject(gr_object)
bm_object = MyBMObjectDefinition("BitMap", "BMObj", "BitMapPtr")
module.addobject(bm_object)
# Create the generator classes used to populate the lists
Function = OSErrFunctionGenerator
Method = OSErrMethodGenerator
# Create and populate the lists
functions = []
methods = []
execfile(INPUTFILE)
#execfile(EXTRAFILE)
# 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 r_methods: r_object.add(f)
##for f in po_methods: po_object.add(f)
#
# We manually generate a routine to create a BitMap from python data.
#
BitMap_body = """
BitMap *ptr;
PyObject *source;
Rect bounds;
int rowbytes;
char *data;
if ( !PyArg_ParseTuple(_args, "O!iO&", &PyString_Type, &source, &rowbytes, PyMac_GetRect,
&bounds) )
return NULL;
data = PyString_AsString(source);
if ((ptr=(BitMap *)malloc(sizeof(BitMap))) == NULL )
return PyErr_NoMemory();
ptr->baseAddr = (Ptr)data;
ptr->rowBytes = rowbytes;
ptr->bounds = bounds;
if ( (_res = BMObj_New(ptr)) == NULL ) {
free(ptr);
return NULL;
}
((BitMapObject *)_res)->referred_object = source;
Py_INCREF(source);
((BitMapObject *)_res)->referred_bitmap = ptr;
return _res;
"""
f = ManualGenerator("BitMap", BitMap_body)
f.docstring = lambda: """Take (string, int, Rect) argument and create BitMap"""
module.add(f)
# generate output (open the output file as late as possible)
SetOutputFileName(OUTPUTFILE)
module.generate()
SetOutputFile() # Close it
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