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/*------------------------------------------------------------------------
* Copyright 2009 (c) Jeff Brown <spadix@users.sourceforge.net>
*
* This file is part of the ZBar Bar Code Reader.
*
* The ZBar Bar Code Reader is free software; you can redistribute it
* and/or modify it under the terms of the GNU Lesser Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* The ZBar Bar Code Reader is distributed in the hope that it will be
* useful, but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser Public License for more details.
*
* You should have received a copy of the GNU Lesser Public License
* along with the ZBar Bar Code Reader; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* http://sourceforge.net/projects/zbar
*------------------------------------------------------------------------*/
#include "zbarmodule.h"
static char enumitem_doc[] = PyDoc_STR(
"simple enumeration item.\n"
"\n"
"associates an int value with a name for printing.");
static zbarEnumItem*
enumitem_new (PyTypeObject *type,
PyObject *args,
PyObject *kwds)
{
int val = 0;
PyObject *name = NULL;
static char *kwlist[] = { "value", "name", NULL };
if(!PyArg_ParseTupleAndKeywords(args, kwds, "iS", kwlist, &val, &name))
return(NULL);
zbarEnumItem *self = (zbarEnumItem*)type->tp_alloc(type, 0);
if(!self)
return(NULL);
self->val.ob_ival = val;
self->name = name;
return(self);
}
static void
enumitem_dealloc (zbarEnumItem *self)
{
Py_CLEAR(self->name);
((PyObject*)self)->ob_type->tp_free((PyObject*)self);
}
static PyObject*
enumitem_str (zbarEnumItem *self)
{
Py_INCREF(self->name);
return(self->name);
}
static int
enumitem_print (zbarEnumItem *self,
FILE *fp,
int flags)
{
return(self->name->ob_type->tp_print(self->name, fp, flags));
}
static PyObject*
enumitem_repr (zbarEnumItem *self)
{
PyObject *name = PyObject_Repr(self->name);
if(!name)
return(NULL);
char *namestr = PyString_AsString(name);
PyObject *repr =
PyString_FromFormat("%s(%ld, %s)",
((PyObject*)self)->ob_type->tp_name,
self->val.ob_ival, namestr);
Py_DECREF(name);
return((PyObject*)repr);
}
PyTypeObject zbarEnumItem_Type = {
PyObject_HEAD_INIT(NULL)
.tp_name = "zbar.EnumItem",
.tp_doc = enumitem_doc,
.tp_basicsize = sizeof(zbarEnumItem),
.tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
.tp_new = (newfunc)enumitem_new,
.tp_dealloc = (destructor)enumitem_dealloc,
.tp_str = (reprfunc)enumitem_str,
.tp_print = (printfunc)enumitem_print,
.tp_repr = (reprfunc)enumitem_repr,
};
zbarEnumItem*
zbarEnumItem_New (PyObject *byname,
PyObject *byvalue,
int val,
const char *name)
{
zbarEnumItem *self = PyObject_New(zbarEnumItem, &zbarEnumItem_Type);
if(!self)
return(NULL);
self->val.ob_ival = val;
self->name = PyString_FromString(name);
if(!self->name ||
(byname && PyDict_SetItem(byname, self->name, (PyObject*)self)) ||
(byvalue && PyDict_SetItem(byvalue, (PyObject*)self, (PyObject*)self))) {
Py_DECREF((PyObject*)self);
return(NULL);
}
return(self);
}
static char enum_doc[] = PyDoc_STR(
"enumeration container for EnumItems.\n"
"\n"
"exposes items as read-only attributes");
/* FIXME add iteration */
static int
enum_traverse (zbarEnum *self,
visitproc visit,
void *arg)
{
Py_VISIT(self->byname);
Py_VISIT(self->byvalue);
return(0);
}
static int
enum_clear (zbarEnum *self)
{
Py_CLEAR(self->byname);
Py_CLEAR(self->byvalue);
return(0);
}
static void
enum_dealloc (zbarEnum *self)
{
enum_clear(self);
((PyObject*)self)->ob_type->tp_free((PyObject*)self);
}
PyTypeObject zbarEnum_Type = {
PyObject_HEAD_INIT(NULL)
.tp_name = "zbar.Enum",
.tp_doc = enum_doc,
.tp_basicsize = sizeof(zbarEnum),
.tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
Py_TPFLAGS_HAVE_GC,
.tp_dictoffset = offsetof(zbarEnum, byname),
.tp_traverse = (traverseproc)enum_traverse,
.tp_clear = (inquiry)enum_clear,
.tp_dealloc = (destructor)enum_dealloc,
};
zbarEnum*
zbarEnum_New ()
{
zbarEnum *self = PyObject_GC_New(zbarEnum, &zbarEnum_Type);
if(!self)
return(NULL);
self->byname = PyDict_New();
self->byvalue = PyDict_New();
if(!self->byname || !self->byvalue) {
Py_DECREF(self);
return(NULL);
}
return(self);
}
int
zbarEnum_Add (zbarEnum *self,
int val,
const char *name)
{
zbarEnumItem *item;
item = zbarEnumItem_New(self->byname, self->byvalue, val, name);
if(!item)
return(-1);
return(0);
}
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