273 lines
9.1 KiB
Python
273 lines
9.1 KiB
Python
# This script generates a Python interface for an Apple Macintosh Manager.
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# It uses the "bgen" package to generate C code.
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# The function specifications are generated by scanning the mamager's header file,
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# using the "scantools" package (customized for this particular manager).
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import string
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import addpack
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addpack.addpack(':Tools:bgen:bgen')
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# Declarations that change for each manager
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MACHEADERFILE = 'QuickDraw.h' # The Apple header file
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MODNAME = 'Qd' # The name of the module
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OBJECTNAME = 'Graf' # The basic name of the objects used here
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# The following is *usually* unchanged but may still require tuning
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MODPREFIX = MODNAME # The prefix for module-wide routines
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OBJECTTYPE = OBJECTNAME + 'Ptr' # The C type used to represent them
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OBJECTPREFIX = MODPREFIX + 'Obj' # The prefix for object methods
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INPUTFILE = string.lower(MODPREFIX) + 'gen.py' # The file generated by the scanner
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EXTRAFILE = string.lower(MODPREFIX) + 'edit.py' # A similar file but hand-made
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OUTPUTFILE = MODNAME + "module.c" # The file generated by this program
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from macsupport import *
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# Create the type objects
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class TextThingieClass(FixedInputBufferType):
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def getargsCheck(self, name):
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pass
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TextThingie = TextThingieClass(None)
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# These are temporary!
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RgnHandle = OpaqueByValueType("RgnHandle", "ResObj")
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OptRgnHandle = OpaqueByValueType("RgnHandle", "OptResObj")
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PicHandle = OpaqueByValueType("PicHandle", "ResObj")
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PolyHandle = OpaqueByValueType("PolyHandle", "ResObj")
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PixMapHandle = OpaqueByValueType("PixMapHandle", "ResObj")
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PixPatHandle = OpaqueByValueType("PixPatHandle", "ResObj")
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PatHandle = OpaqueByValueType("PatHandle", "ResObj")
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CursHandle = OpaqueByValueType("CursHandle", "ResObj")
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CGrafPtr = OpaqueByValueType("CGrafPtr", "GrafObj")
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GrafPtr = OpaqueByValueType("GrafPtr", "GrafObj")
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BitMap_ptr = OpaqueByValueType("BitMapPtr", "BMObj")
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RGBColor = OpaqueType('RGBColor', 'QdRGB')
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RGBColor_ptr = RGBColor
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Cursor_ptr = StructInputBufferType('Cursor')
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Pattern = StructOutputBufferType('Pattern')
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Pattern_ptr = StructInputBufferType('Pattern')
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PenState = StructOutputBufferType('PenState')
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PenState_ptr = StructInputBufferType('PenState')
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includestuff = includestuff + """
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#include <%s>""" % MACHEADERFILE + """
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#include <Desk.h>
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#define resNotFound -192 /* Can't include <Errors.h> because of Python's "errors.h" */
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/*
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** Parse/generate RGB records
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*/
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PyObject *QdRGB_New(itself)
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RGBColorPtr itself;
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{
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return Py_BuildValue("lll", (long)itself->red, (long)itself->green, (long)itself->blue);
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}
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QdRGB_Convert(v, p_itself)
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PyObject *v;
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RGBColorPtr p_itself;
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{
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long red, green, blue;
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if( !PyArg_ParseTuple(v, "lll", &red, &green, &blue) )
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return 0;
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p_itself->red = (unsigned short)red;
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p_itself->green = (unsigned short)green;
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p_itself->blue = (unsigned short)blue;
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return 1;
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}
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"""
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variablestuff = """
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{
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PyObject *o;
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o = PyString_FromStringAndSize((char *)&qd.arrow, sizeof(qd.arrow));
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if (o == NULL || PyDict_SetItemString(d, "arrow", o) != 0)
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Py_FatalError("can't initialize Qd.arrow");
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o = PyString_FromStringAndSize((char *)&qd.black, sizeof(qd.black));
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if (o == NULL || PyDict_SetItemString(d, "black", o) != 0)
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Py_FatalError("can't initialize Qd.black");
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o = PyString_FromStringAndSize((char *)&qd.white, sizeof(qd.white));
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if (o == NULL || PyDict_SetItemString(d, "white", o) != 0)
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Py_FatalError("can't initialize Qd.white");
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o = PyString_FromStringAndSize((char *)&qd.gray, sizeof(qd.gray));
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if (o == NULL || PyDict_SetItemString(d, "gray", o) != 0)
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Py_FatalError("can't initialize Qd.gray");
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o = PyString_FromStringAndSize((char *)&qd.ltGray, sizeof(qd.ltGray));
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if (o == NULL || PyDict_SetItemString(d, "ltGray", o) != 0)
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Py_FatalError("can't initialize Qd.ltGray");
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o = PyString_FromStringAndSize((char *)&qd.dkGray, sizeof(qd.dkGray));
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if (o == NULL || PyDict_SetItemString(d, "dkGray", o) != 0)
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Py_FatalError("can't initialize Qd.dkGray");
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/* thePort, screenBits and randSeed still missing... */
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}
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"""
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## not yet...
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##
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##class Region_ObjectDefinition(GlobalObjectDefinition):
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## def outputCheckNewArg(self):
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## Output("if (itself == NULL) return PyMac_Error(resNotFound);")
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## def outputFreeIt(self, itselfname):
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## Output("DisposeRegion(%s);", itselfname)
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##
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##class Polygon_ObjectDefinition(GlobalObjectDefinition):
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## def outputCheckNewArg(self):
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## Output("if (itself == NULL) return PyMac_Error(resNotFound);")
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## def outputFreeIt(self, itselfname):
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## Output("KillPoly(%s);", itselfname)
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class MyGRObjectDefinition(GlobalObjectDefinition):
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def outputCheckNewArg(self):
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Output("if (itself == NULL) return PyMac_Error(resNotFound);")
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def outputCheckConvertArg(self):
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OutLbrace("if (DlgObj_Check(v) || WinObj_Check(v))")
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Output("*p_itself = ((GrafPortObject *)v)->ob_itself;")
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Output("return 1;")
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OutRbrace()
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def outputGetattrHook(self):
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Output("""if ( strcmp(name, "device") == 0 )
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return PyInt_FromLong((long)self->ob_itself->device);
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if ( strcmp(name, "portBits") == 0 ) {
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CGrafPtr itself_color = (CGrafPtr)self->ob_itself;
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if ( (itself_color->portVersion&0xc000) == 0xc000 )
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/* XXXX Do we need HLock() stuff here?? */
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return BMObj_New((BitMapPtr)*itself_color->portPixMap);
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else
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return BMObj_New(&self->ob_itself->portBits);
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}
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if ( strcmp(name, "portRect") == 0 )
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return Py_BuildValue("O&", PyMac_BuildRect, &self->ob_itself->portRect);
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/* XXXX Add more, as needed */
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""")
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class MyBMObjectDefinition(GlobalObjectDefinition):
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def outputCheckNewArg(self):
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Output("if (itself == NULL) return PyMac_Error(resNotFound);")
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def outputStructMembers(self):
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# We need to more items: a pointer to privately allocated data
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# and a python object we're referring to.
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Output("%s ob_itself;", self.itselftype)
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Output("PyObject *referred_object;")
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Output("BitMap *referred_bitmap;")
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def outputInitStructMembers(self):
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Output("it->ob_itself = %sitself;", self.argref)
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Output("it->referred_object = NULL;")
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Output("it->referred_bitmap = NULL;")
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def outputCleanupStructMembers(self):
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Output("Py_XDECREF(self->referred_object);")
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Output("if (self->referred_bitmap) free(self->referred_bitmap);")
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def outputGetattrHook(self):
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Output("""if ( strcmp(name, "baseAddr") == 0 )
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return PyInt_FromLong((long)self->ob_itself->baseAddr);
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if ( strcmp(name, "rowBytes") == 0 )
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return PyInt_FromLong((long)self->ob_itself->rowBytes);
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if ( strcmp(name, "bounds") == 0 )
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return Py_BuildValue("O&", PyMac_BuildRect, &self->ob_itself->bounds);
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/* XXXX Add more, as needed */
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if ( strcmp(name, "bitmap_data") == 0 )
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return PyString_FromStringAndSize((char *)self->ob_itself, sizeof(BitMap));
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if ( strcmp(name, "pixmap_data") == 0 )
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return PyString_FromStringAndSize((char *)self->ob_itself, sizeof(PixMap));
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""")
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# Create the generator groups and link them
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module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff, variablestuff)
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##r_object = Region_ObjectDefinition('Region', 'QdRgn', 'RgnHandle')
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##po_object = Polygon_ObjectDefinition('Polygon', 'QdPgn', 'PolyHandle')
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##module.addobject(r_object)
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##module.addobject(po_object)
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gr_object = MyGRObjectDefinition("GrafPort", "GrafObj", "GrafPtr")
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module.addobject(gr_object)
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bm_object = MyBMObjectDefinition("BitMap", "BMObj", "BitMapPtr")
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module.addobject(bm_object)
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# Create the generator classes used to populate the lists
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Function = OSErrFunctionGenerator
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Method = OSErrMethodGenerator
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# Create and populate the lists
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functions = []
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methods = []
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execfile(INPUTFILE)
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#execfile(EXTRAFILE)
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# add the populated lists to the generator groups
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# (in a different wordl the scan program would generate this)
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for f in functions: module.add(f)
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##for f in r_methods: r_object.add(f)
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##for f in po_methods: po_object.add(f)
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#
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# We manually generate a routine to create a BitMap from python data.
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#
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BitMap_body = """
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BitMap *ptr;
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PyObject *source;
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Rect bounds;
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int rowbytes;
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char *data;
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if ( !PyArg_ParseTuple(_args, "O!iO&", &PyString_Type, &source, &rowbytes, PyMac_GetRect,
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&bounds) )
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return NULL;
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data = PyString_AsString(source);
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if ((ptr=(BitMap *)malloc(sizeof(BitMap))) == NULL )
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return PyErr_NoMemory();
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ptr->baseAddr = (Ptr)data;
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ptr->rowBytes = rowbytes;
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ptr->bounds = bounds;
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if ( (_res = BMObj_New(ptr)) == NULL ) {
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free(ptr);
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return NULL;
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}
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((BitMapObject *)_res)->referred_object = source;
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Py_INCREF(source);
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((BitMapObject *)_res)->referred_bitmap = ptr;
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return _res;
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"""
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f = ManualGenerator("BitMap", BitMap_body)
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f.docstring = lambda: """Take (string, int, Rect) argument and create BitMap"""
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module.add(f)
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#
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# And again, for turning a correctly-formatted structure into the object
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#
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RawBitMap_body = """
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BitMap *ptr;
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PyObject *source;
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if ( !PyArg_ParseTuple(_args, "O!", &PyString_Type, &source) )
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return NULL;
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if ( PyString_Size(source) != sizeof(BitMap) && PyString_Size(source) != sizeof(PixMap) ) {
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PyErr_BadArgument();
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return NULL;
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}
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ptr = (BitMapPtr)PyString_AsString(source);
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if ( (_res = BMObj_New(ptr)) == NULL ) {
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return NULL;
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}
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((BitMapObject *)_res)->referred_object = source;
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Py_INCREF(source);
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return _res;
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"""
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f = ManualGenerator("RawBitMap", RawBitMap_body)
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f.docstring = lambda: """Take string BitMap and turn into BitMap object"""
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module.add(f)
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# generate output (open the output file as late as possible)
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SetOutputFileName(OUTPUTFILE)
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module.generate()
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SetOutputFile() # Close it
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