mirror of https://github.com/python/cpython
140 lines
3.0 KiB
Python
140 lines
3.0 KiB
Python
# This script will generate the Resources interface for Python.
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# It uses the "bgen" package to generate C code.
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# It execs the file resgen.py which contain the function definitions
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# (resgen.py was generated by resscan.py, scanning the <Resources.h> header file).
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from macsupport import *
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class ResMixIn:
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def checkit(self):
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OutLbrace()
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Output("OSErr _err = ResError();")
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Output("if (_err != noErr) return PyMac_Error(_err);")
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OutRbrace()
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FunctionGenerator.checkit(self) # XXX
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class ResFunction(ResMixIn, FunctionGenerator): pass
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class ResMethod(ResMixIn, MethodGenerator): pass
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# includestuff etc. are imported from macsupport
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includestuff = includestuff + """
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#include <Resources.h>
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#include <string.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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finalstuff = finalstuff + """
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/* Alternative version of ResObj_New, which returns None for null argument */
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PyObject *OptResObj_New(itself)
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Handle itself;
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{
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if (itself == NULL) {
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Py_INCREF(Py_None);
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return Py_None;
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}
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return ResObj_New(itself);
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}
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OptResObj_Convert(v, p_itself)
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PyObject *v;
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Handle *p_itself;
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{
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if ( v == Py_None ) {
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*p_itself = NULL;
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return 1;
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}
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if (!ResObj_Check(v))
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{
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PyErr_SetString(PyExc_TypeError, "Resource required");
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return 0;
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}
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*p_itself = ((ResourceObject *)v)->ob_itself;
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return 1;
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}
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"""
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initstuff = initstuff + """
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"""
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module = MacModule('Res', 'Res', includestuff, finalstuff, initstuff)
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getattrHookCode = """
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if (strcmp(name, "size") == 0)
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return PyInt_FromLong(GetHandleSize(self->ob_itself));
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if (strcmp(name, "data") == 0) {
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PyObject *res;
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char state;
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state = HGetState(self->ob_itself);
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HLock(self->ob_itself);
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res = PyString_FromStringAndSize(
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*self->ob_itself,
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GetHandleSize(self->ob_itself));
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HUnlock(self->ob_itself);
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HSetState(self->ob_itself, state);
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return res;
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}
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if (strcmp(name, "__members__") == 0)
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return Py_BuildValue("[ss]", "data", "size");
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"""
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setattrCode = """
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static int
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ResObj_setattr(self, name, value)
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ResourceObject *self;
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char *name;
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PyObject *value;
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{
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char *data;
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long size;
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if (strcmp(name, "data") != 0 || value == NULL )
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return -1;
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if ( !PyString_Check(value) )
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return -1;
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size = PyString_Size(value);
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data = PyString_AsString(value);
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/* XXXX Do I need the GetState/SetState calls? */
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SetHandleSize(self->ob_itself, size);
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if ( MemError())
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return -1;
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HLock(self->ob_itself);
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memcpy((char *)*self->ob_itself, data, size);
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HUnlock(self->ob_itself);
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/* XXXX Should I do the Changed call immedeately? */
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return 0;
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}
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"""
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class ResDefiniton(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 outputGetattrHook(self):
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Output(getattrHookCode)
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def outputSetattr(self):
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Output(setattrCode)
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resobject = ResDefiniton('Resource', 'ResObj', 'Handle')
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module.addobject(resobject)
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functions = []
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resmethods = []
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execfile('resgen.py')
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execfile('resedit.py')
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for f in functions: module.add(f)
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for f in resmethods: resobject.add(f)
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SetOutputFileName('Resmodule.c')
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module.generate()
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