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/* Chrysalide - Outil d'analyse de fichiers binaires
* collection.c - équivalent Python du fichier "plugins/yaml/collection.c"
*
* Copyright (C) 2019 Cyrille Bagard
*
* This file is part of Chrysalide.
*
* Chrysalide is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Chrysalide 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "collection.h"
#include <pygobject.h>
#include <plugins/pychrysalide/helpers.h>
#include "node.h"
#include "../collection.h"
/* Crée un nouvel objet Python de type 'YamlCollection'. */
static PyObject *py_yaml_collection_new(PyTypeObject *, PyObject *, PyObject *);
/* Indique la nature d'une collection YAML. */
static PyObject *py_yaml_collection_is_sequence(PyObject *, void *);
/* Fournit la liste des noeuds intégrés dans une collection. */
static PyObject *py_yaml_collection_get_nodes(PyObject *, void *);
/******************************************************************************
* *
* Paramètres : type = type de l'objet à instancier. *
* args = arguments fournis à l'appel. *
* kwds = arguments de type key=val fournis. *
* *
* Description : Crée un nouvel objet Python de type 'YamlCollection'. *
* *
* Retour : Instance Python mise en place. *
* *
* Remarques : - *
* *
******************************************************************************/
static PyObject *py_yaml_collection_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
PyObject *result; /* Instance à retourner */
int seq; /* Indicateur de type */
int ret; /* Bilan de lecture des args. */
GYamlCollection *collec; /* Création GLib à transmettre */
#define YAML_COLLECTION_DOC \
"YamlCollection handles a collection of YAML nodes.\n" \
"\n" \
"Instances can be created using the following constructor:\n" \
"\n" \
" YamlCollection(seq=False)\n" \
"\n" \
"Where *seq* is a boolean value which defines if the collection will be a" \
" sequence or a mapping of nodes."
ret = PyArg_ParseTuple(args, "p", &seq);
if (!ret) return NULL;
collec = g_yaml_collection_new(seq);
g_object_ref_sink(G_OBJECT(collec));
result = pygobject_new(G_OBJECT(collec));
g_object_unref(collec);
return result;
}
/******************************************************************************
* *
* Paramètres : self = objet Python concerné par l'appel. *
* closure = non utilisé ici. *
* *
* Description : Fournit la liste des noeuds intégrés dans une collection. *
* *
* Retour : Enfants d'un noeud issu d'une collection YAML. *
* *
* Remarques : - *
* *
******************************************************************************/
static PyObject *py_yaml_collection_get_nodes(PyObject *self, void *closure)
{
PyObject *result; /* Résultat à retourner */
GYamlCollection *collec; /* Version GLib du type */
size_t count; /* Quantité de noeuds à traiter*/
GYamlNode **nodes; /* Liste des noeuds à la racine*/
size_t i; /* Boucle de parcours */
#ifndef NDEBUG
int ret; /* Bilan d'une insertion */
#endif
#define YAML_COLLECTION_NODES_ATTRIB PYTHON_GET_DEF_FULL \
( \
nodes, py_yaml_collection, \
"List of nodes contained in the current collection." \
)
collec = G_YAML_COLLEC(pygobject_get(self));
nodes = g_yaml_collection_get_nodes(collec, &count);
result = PyTuple_New(count);
for (i = 0; i < count; i++)
{
#ifndef NDEBUG
ret = PyTuple_SetItem(result, i, pygobject_new(G_OBJECT(nodes[i])));
assert(ret == 0);
#else
PyTuple_SetItem(result, i, pygobject_new(G_OBJECT(nodes[i])));
#endif
g_object_unref(G_OBJECT(nodes[i]));
}
free(nodes);
return result;
}
/******************************************************************************
* *
* Paramètres : self = objet Python concerné par l'appel. *
* closure = non utilisé ici. *
* *
* Description : Indique la nature d'une collection YAML. *
* *
* Retour : Nature de la collection. *
* *
* Remarques : - *
* *
******************************************************************************/
static PyObject *py_yaml_collection_is_sequence(PyObject *self, void *closure)
{
PyObject *result; /* Résultat à retourner */
GYamlCollection *collec; /* Version GLib du type */
bool status; /* Bilan de consultation */
#define YAML_COLLECTION_IS_SEQUENCE_ATTRIB PYTHON_IS_DEF_FULL \
( \
sequence, py_yaml_collection, \
"Nature of the collection: True if the collection is a sequence," \
" False if it is a mapping of \"key: value\" nodes." \
)
collec = G_YAML_COLLEC(pygobject_get(self));
status = g_yaml_collection_is_sequence(collec);
result = status ? Py_True : Py_False;
Py_INCREF(result);
return result;
}
/******************************************************************************
* *
* Paramètres : - *
* *
* Description : Fournit un accès à une définition de type à diffuser. *
* *
* Retour : Définition d'objet pour Python. *
* *
* Remarques : - *
* *
******************************************************************************/
PyTypeObject *get_python_yaml_collection_type(void)
{
static PyMethodDef py_yaml_collection_methods[] = {
{ NULL }
};
static PyGetSetDef py_yaml_collection_getseters[] = {
YAML_COLLECTION_IS_SEQUENCE_ATTRIB,
YAML_COLLECTION_NODES_ATTRIB,
{ NULL }
};
static PyTypeObject py_yaml_collection_type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "pychrysalide.plugins.yaml.YamlCollection",
.tp_basicsize = sizeof(PyGObject),
.tp_flags = Py_TPFLAGS_DEFAULT,
.tp_doc = YAML_COLLECTION_DOC,
.tp_methods = py_yaml_collection_methods,
.tp_getset = py_yaml_collection_getseters,
.tp_new = py_yaml_collection_new
};
return &py_yaml_collection_type;
}
/******************************************************************************
* *
* Paramètres : module = module dont la définition est à compléter. *
* *
* Description : Prend en charge l'objet 'pychrysalide.....YamlCollection. *
* *
* Retour : Bilan de l'opération. *
* *
* Remarques : - *
* *
******************************************************************************/
bool register_python_yaml_collection(PyObject *module)
{
PyTypeObject *type; /* Type Python 'YamlCollection'*/
PyObject *dict; /* Dictionnaire du module */
type = get_python_yaml_collection_type();
dict = PyModule_GetDict(module);
if (!register_class_for_pygobject(dict, G_TYPE_YAML_COLLEC, type, get_python_yaml_node_type()))
return false;
return true;
}
/******************************************************************************
* *
* Paramètres : arg = argument quelconque à tenter de convertir. *
* dst = destination des valeurs récupérées en cas de succès. *
* *
* Description : Tente de convertir en collection de noeuds de format YAML. *
* *
* Retour : Bilan de l'opération, voire indications supplémentaires. *
* *
* Remarques : - *
* *
******************************************************************************/
int convert_to_yaml_collection(PyObject *arg, void *dst)
{
int result; /* Bilan à retourner */
result = PyObject_IsInstance(arg, (PyObject *)get_python_yaml_collection_type());
switch (result)
{
case -1:
/* L'exception est déjà fixée par Python */
result = 0;
break;
case 0:
PyErr_SetString(PyExc_TypeError, "unable to convert the provided argument to YAML collection");
break;
case 1:
*((GYamlCollection **)dst) = G_YAML_COLLEC(pygobject_get(arg));
break;
default:
assert(false);
break;
}
return result;
}
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