378 lines
12 KiB
Python
378 lines
12 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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# 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 = 'Qd' # 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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Output("/* Fool compiler warnings */")
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Output("%s__in_len__ = %s__in_len__;", name, name)
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def declareSize(self, name):
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Output("int %s__in_len__;", name)
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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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CCrsrHandle = OpaqueByValueType("CCrsrHandle", "ResObj")
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CIconHandle = OpaqueByValueType("CIconHandle", "ResObj")
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CTabHandle = OpaqueByValueType("CTabHandle", "ResObj")
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ITabHandle = OpaqueByValueType("ITabHandle", "ResObj")
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GDHandle = OpaqueByValueType("GDHandle", "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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const_BitMap_ptr = OpaqueByValueType("const BitMap *", "BMObj")
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BitMap = OpaqueType("BitMap", "BMObj_NewCopied", "BUG")
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RGBColor = OpaqueType('RGBColor', 'QdRGB')
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RGBColor_ptr = RGBColor
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FontInfo = OpaqueType('FontInfo', 'QdFI')
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Component = OpaqueByValueType('Component', 'CmpObj')
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ComponentInstance = OpaqueByValueType('ComponentInstance', 'CmpInstObj')
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Cursor = StructOutputBufferType('Cursor')
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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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TruncCode = Type("TruncCode", "h")
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includestuff = includestuff + """
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#include <Carbon/Carbon.h>
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#ifdef USE_TOOLBOX_OBJECT_GLUE
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extern PyObject *_GrafObj_New(GrafPtr);
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extern int _GrafObj_Convert(PyObject *, GrafPtr *);
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extern PyObject *_BMObj_New(BitMapPtr);
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extern int _BMObj_Convert(PyObject *, BitMapPtr *);
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extern PyObject *_QdRGB_New(RGBColorPtr);
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extern int _QdRGB_Convert(PyObject *, RGBColorPtr);
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#define GrafObj_New _GrafObj_New
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#define GrafObj_Convert _GrafObj_Convert
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#define BMObj_New _BMObj_New
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#define BMObj_Convert _BMObj_Convert
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#define QdRGB_New _QdRGB_New
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#define QdRGB_Convert _QdRGB_Convert
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#endif
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static PyObject *BMObj_NewCopied(BitMapPtr);
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/*
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** Parse/generate RGB records
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*/
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PyObject *QdRGB_New(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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int QdRGB_Convert(PyObject *v, 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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** Generate FontInfo records
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*/
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static
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PyObject *QdFI_New(FontInfo *itself)
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{
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return Py_BuildValue("hhhh", itself->ascent, itself->descent,
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itself->widMax, itself->leading);
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}
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"""
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finalstuff = finalstuff + """
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/* Like BMObj_New, but the original bitmap data structure is copied (and
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** released when the object is released)
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*/
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PyObject *BMObj_NewCopied(BitMapPtr itself)
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{
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BitMapObject *it;
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BitMapPtr itself_copy;
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if ((itself_copy=(BitMapPtr)malloc(sizeof(BitMap))) == NULL)
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return PyErr_NoMemory();
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*itself_copy = *itself;
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it = (BitMapObject *)BMObj_New(itself_copy);
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it->referred_bitmap = itself_copy;
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return (PyObject *)it;
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}
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"""
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variablestuff = ""
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initstuff = initstuff + """
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PyMac_INIT_TOOLBOX_OBJECT_NEW(BitMapPtr, BMObj_New);
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PyMac_INIT_TOOLBOX_OBJECT_CONVERT(BitMapPtr, BMObj_Convert);
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PyMac_INIT_TOOLBOX_OBJECT_NEW(GrafPtr, GrafObj_New);
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PyMac_INIT_TOOLBOX_OBJECT_CONVERT(GrafPtr, GrafObj_Convert);
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PyMac_INIT_TOOLBOX_OBJECT_NEW(RGBColorPtr, QdRGB_New);
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PyMac_INIT_TOOLBOX_OBJECT_CONVERT(RGBColor, QdRGB_Convert);
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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(PEP253Mixin, GlobalObjectDefinition):
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getsetlist = [
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('visRgn',
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"""RgnHandle h=NewRgn(); /* XXXX wrong dispose routine */
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return Py_BuildValue("O&", ResObj_New, (Handle)GetPortVisibleRegion(self->ob_itself, h));
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""",
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None,
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"Convenience attribute: return a copy of the visible region"
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), (
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'clipRgn',
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"""RgnHandle h=NewRgn(); /* XXXX wrong dispose routine */
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return Py_BuildValue("O&", ResObj_New, (Handle)GetPortClipRegion(self->ob_itself, h));
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""",
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None,
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"Convenience attribute: return a copy of the clipping region"
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)]
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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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Output("#if 1")
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OutLbrace()
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Output("WindowRef win;")
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OutLbrace("if (WinObj_Convert(v, &win) && v)")
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Output("*p_itself = (GrafPtr)GetWindowPort(win);")
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Output("return 1;")
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OutRbrace()
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Output("PyErr_Clear();")
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OutRbrace()
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Output("#else")
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OutLbrace("if (DlgObj_Check(v))")
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Output("DialogRef dlg = (DialogRef)((GrafPortObject *)v)->ob_itself;")
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Output("*p_itself = (GrafPtr)GetWindowPort(GetDialogWindow(dlg));")
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Output("return 1;")
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OutRbrace()
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OutLbrace("if (WinObj_Check(v))")
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Output("WindowRef win = (WindowRef)((GrafPortObject *)v)->ob_itself;")
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Output("*p_itself = (GrafPtr)GetWindowPort(win);")
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Output("return 1;")
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OutRbrace()
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Output("#endif")
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class MyBMObjectDefinition(PEP253Mixin, GlobalObjectDefinition):
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getsetlist = [
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(
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'baseAddr',
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'return PyInt_FromLong((long)self->ob_itself->baseAddr);',
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None,
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None
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), (
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'rowBytes',
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'return PyInt_FromLong((long)self->ob_itself->rowBytes);',
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None,
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None
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), (
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'bounds',
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'return Py_BuildValue("O&", PyMac_BuildRect, &self->ob_itself->bounds);',
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None,
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None
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), (
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'bitmap_data',
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'return PyString_FromStringAndSize((char *)self->ob_itself, sizeof(BitMap));',
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None,
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None
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), (
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'pixmap_data',
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'return PyString_FromStringAndSize((char *)self->ob_itself, sizeof(PixMap));',
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None,
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None
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)]
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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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# 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 = OSErrWeakLinkFunctionGenerator
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Method = OSErrWeakLinkMethodGenerator
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# Create and populate the lists
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functions = []
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gr_methods = []
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bm_methods = []
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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 gr_methods: gr_object.add(f)
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for f in bm_methods: bm_object.add(f)
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# Manual generator: get data out of a bitmap
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getdata_body = """
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int from, length;
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char *cp;
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if ( !PyArg_ParseTuple(_args, "ii", &from, &length) )
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return NULL;
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cp = _self->ob_itself->baseAddr+from;
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_res = PyString_FromStringAndSize(cp, length);
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return _res;
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"""
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f = ManualGenerator("getdata", getdata_body)
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f.docstring = lambda: """(int start, int size) -> string. Return bytes from the bitmap"""
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bm_object.add(f)
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# Manual generator: store data in a bitmap
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putdata_body = """
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int from, length;
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char *cp, *icp;
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if ( !PyArg_ParseTuple(_args, "is#", &from, &icp, &length) )
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return NULL;
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cp = _self->ob_itself->baseAddr+from;
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memcpy(cp, icp, length);
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Py_INCREF(Py_None);
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_res = Py_None;
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return _res;
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"""
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f = ManualGenerator("putdata", putdata_body)
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f.docstring = lambda: """(int start, string data). Store bytes into the bitmap"""
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bm_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_Format(PyExc_TypeError,
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"Argument size was %d, should be %d (sizeof BitMap) or %d (sizeof PixMap)",
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PyString_Size(source), sizeof(BitMap), sizeof(PixMap));
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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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