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# This script will generate the Resources interface for Python.
# It uses the "bgen" package to generate C code.
# It execs the file resgen.py which contain the function definitions
# (resgen.py was generated by resscan.py, scanning the <Resources.h> header file).
import addpack
addpack.addpack(':Tools:bgen:bgen')
from macsupport import *
class ResMixIn:
def checkit(self):
OutLbrace()
Output("OSErr _err = ResError();")
Output("if (_err != noErr) return PyMac_Error(_err);")
OutRbrace()
FunctionGenerator.checkit(self) # XXX
class ResFunction(ResMixIn, FunctionGenerator): pass
class ResMethod(ResMixIn, MethodGenerator): pass
# includestuff etc. are imported from macsupport
includestuff = includestuff + """
#include <Resources.h>
#define resNotFound -192 /* Can't include <Errors.h> because of Python's "errors.h" */
"""
finalstuff = finalstuff + """
/* Alternative version of ResObj_New, which returns None for null argument */
PyObject *OptResObj_New(itself)
Handle itself;
{
if (itself == NULL) {
Py_INCREF(Py_None);
return Py_None;
}
return ResObj_New(itself);
}
OptResObj_Convert(v, p_itself)
PyObject *v;
Handle *p_itself;
{
if ( v == Py_None ) {
*p_itself = NULL;
return 1;
}
if (!ResObj_Check(v))
{
PyErr_SetString(PyExc_TypeError, "Resource required");
return 0;
}
*p_itself = ((ResourceObject *)v)->ob_itself;
return 1;
}
"""
initstuff = initstuff + """
"""
module = MacModule('Res', 'Res', includestuff, finalstuff, initstuff)
getattrHookCode = """
if (strcmp(name, "size") == 0)
return PyInt_FromLong(GetHandleSize(self->ob_itself));
if (strcmp(name, "data") == 0) {
PyObject *res;
char state;
state = HGetState(self->ob_itself);
HLock(self->ob_itself);
res = PyString_FromStringAndSize(
*self->ob_itself,
GetHandleSize(self->ob_itself));
HUnlock(self->ob_itself);
HSetState(self->ob_itself, state);
return res;
}
if (strcmp(name, "__members__") == 0)
return Py_BuildValue("[ss]", "data", "size");
"""
setattrCode = """
static int
ResObj_setattr(self, name, value)
ResourceObject *self;
char *name;
PyObject *value;
{
char *data;
long size;
if (strcmp(name, "data") != 0 || value == NULL )
return -1;
if ( !PyString_Check(value) )
return -1;
size = PyString_Size(value);
data = PyString_AsString(value);
/* XXXX Do I need the GetState/SetState calls? */
SetHandleSize(self->ob_itself, size);
if ( MemError())
return -1;
HLock(self->ob_itself);
memcpy((char *)*self->ob_itself, data, size);
HUnlock(self->ob_itself);
/* XXXX Should I do the Changed call immedeately? */
return 0;
}
"""
class ResDefiniton(GlobalObjectDefinition):
def outputCheckNewArg(self):
Output("if (itself == NULL) return PyMac_Error(resNotFound);")
def outputGetattrHook(self):
Output(getattrHookCode)
def outputSetattr(self):
Output(setattrCode)
resobject = ResDefiniton('Resource', 'ResObj', 'Handle')
module.addobject(resobject)
functions = []
resmethods = []
execfile('resgen.py')
execfile('resedit.py')
for f in functions: module.add(f)
for f in resmethods: resobject.add(f)
SetOutputFileName('Resmodule.c')
module.generate()
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