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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
# 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
includestuff = includestuff + """
#include <%s>""" % MACHEADERFILE + """
#include <Desk.h>
#define resNotFound -192 /* Can't include <Errors.h> because of Python's "errors.h" */
"""
class MyObjectDefinition(GlobalObjectDefinition):
def outputCheckNewArg(self):
Output("if (itself == NULL) return PyMac_Error(resNotFound);")
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("DisposeWindow(%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 = 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 methods: object.add(f)
# generate output (open the output file as late as possible)
SetOutputFileName(OUTPUTFILE)
module.generate()
SetOutputFile() # Close it
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