/* Chrysalide - Outil d'analyse de fichiers binaires * scalar.c - équivalent Python du fichier "plugins/yaml/scalar.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 "scalar.h" #include #include #include "collection.h" #include "line.h" #include "node.h" #include "../scalar.h" /* Crée un nouvel objet Python de type 'YamlScalar'. */ static PyObject *py_yaml_scalar_new(PyTypeObject *, PyObject *, PyObject *); /* Attache une collection de noeuds Yaml à un noeud. */ static int py_yaml_scalar_set_collection(PyObject *, PyObject *, void *); /* Fournit une éventuelle collection rattachée à un noeud. */ static PyObject *py_yaml_scalar_get_collection(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 'YamlScalar'. * * * * Retour : Instance Python mise en place. * * * * Remarques : - * * * ******************************************************************************/ static PyObject *py_yaml_scalar_new(PyTypeObject *type, PyObject *args, PyObject *kwds) { PyObject *result; /* Instance à retourner */ GYamlLine *key; /* Ligne principale du noeud */ int ret; /* Bilan de lecture des args. */ GYamlScalar *node; /* Création GLib à transmettre */ #define YAML_SCALAR_DOC \ "YamlScalar handles a scalar node in a Yaml tree.\n" \ "\n" \ "Instances can be created using the following constructor:\n" \ "\n" \ " YamlScalar(key)\n" \ "\n" \ "Where key is the main Yaml line for the scalar." ret = PyArg_ParseTuple(args, "O&", &convert_to_yaml_line, &key); if (!ret) return NULL; node = g_yaml_scalar_new(key); g_object_ref_sink(G_OBJECT(node)); result = pygobject_new(G_OBJECT(node)); g_object_unref(node); return result; } /****************************************************************************** * * * Paramètres : self = contenu binaire à manipuler. * * value = collection de noeuds Yaml. * * closure = adresse non utilisée ici. * * * * Description : Attache une collection de noeuds Yaml à un noeud. * * * * Retour : Jeu d'attributs liés au contenu courant. * * * * Remarques : - * * * ******************************************************************************/ static int py_yaml_scalar_set_collection(PyObject *self, PyObject *value, void *closure) { int result; /* Bilan à renvoyer */ GYamlScalar *node; /* Version GLib du noeud */ GYamlCollection *collec; /* Version GLib de la valeur */ node = G_YAML_SCALAR(pygobject_get(self)); if (value == Py_None) { g_yaml_scalar_set_collection(node, NULL); result = 0; } else { if (!convert_to_yaml_collection(value, &collec)) result = -1; else { g_yaml_scalar_set_collection(node, collec); result = 0; } } return result; } /****************************************************************************** * * * Paramètres : self = contenu binaire à manipuler. * * closure = adresse non utilisée ici. * * * * Description : Fournit une éventuelle collection rattachée à un noeud. * * * * Retour : Collection de noeuds Yaml ou None. * * * * Remarques : - * * * ******************************************************************************/ static PyObject *py_yaml_scalar_get_collection(PyObject *self, void *closure) { PyObject *result; /* Instance à retourner */ GYamlScalar *node; /* Version GLib du noeud */ GYamlCollection *collec; /* Collection à transmettre */ #define YAML_SCALAR_COLLECTION_ATTRIB PYTHON_GETSET_DEF_FULL \ ( \ collection, py_yaml_scalar, \ "Provide or define the collection of nodes attached to another Yaml node." \ ) node = G_YAML_SCALAR(pygobject_get(self)); collec = g_yaml_scalar_get_collection(node); if (collec == NULL) { result = Py_None; Py_INCREF(result); } else { result = pygobject_new(G_OBJECT(collec)); g_object_unref(collec); } 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_scalar_type(void) { static PyMethodDef py_yaml_scalar_methods[] = { { NULL } }; static PyGetSetDef py_yaml_scalar_getseters[] = { YAML_SCALAR_COLLECTION_ATTRIB, { NULL } }; static PyTypeObject py_yaml_scalar_type = { PyVarObject_HEAD_INIT(NULL, 0) .tp_name = "pychrysalide.plugins.yaml.YamlScalar", .tp_basicsize = sizeof(PyGObject), .tp_flags = Py_TPFLAGS_DEFAULT, .tp_doc = YAML_SCALAR_DOC, .tp_methods = py_yaml_scalar_methods, .tp_getset = py_yaml_scalar_getseters, .tp_new = py_yaml_scalar_new }; return &py_yaml_scalar_type; } /****************************************************************************** * * * Paramètres : module = module dont la définition est à compléter. * * * * Description : Prend en charge l'objet 'pychrysalide.plugins.....YamlScalar.* * * * Retour : Bilan de l'opération. * * * * Remarques : - * * * ******************************************************************************/ bool register_python_yaml_scalar(PyObject *module) { PyTypeObject *type; /* Type Python 'YamlScalar' */ PyObject *dict; /* Dictionnaire du module */ type = get_python_yaml_scalar_type(); dict = PyModule_GetDict(module); if (!register_class_for_pygobject(dict, G_TYPE_YAML_SCALAR, 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 noeud d'arborescence de format Yaml. * * * * Retour : Bilan de l'opération, voire indications supplémentaires. * * * * Remarques : - * * * ******************************************************************************/ int convert_to_yaml_scalar(PyObject *arg, void *dst) { int result; /* Bilan à retourner */ result = PyObject_IsInstance(arg, (PyObject *)get_python_yaml_scalar_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 scalar"); break; case 1: *((GYamlScalar **)dst) = G_YAML_SCALAR(pygobject_get(arg)); break; default: assert(false); break; } return result; }