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/* Chrysalide - Outil d'analyse de fichiers binaires
* fnv1a.c - équivalent Python du fichier "common/fnv1a.c"
*
* Copyright (C) 2018-2019 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 "fnv1a.h"
#include <pygobject.h>
#include <common/fnv1a.h>
#include "../access.h"
#include "../helpers.h"
#define FNV1A_DOC \
"Python version for Chrysalide of the Fowler-Noll-Vo" \
" hash function.\n" \
"\n" \
"There is no constructor for this class: its methods" \
" are static methods only."
/* Détermine l'empreinte FNV1a d'une chaîne de caractères. */
static PyObject *py_fnv1a_hash(PyObject *, PyObject *);
/******************************************************************************
* *
* Paramètres : self = NULL car méthode statique. *
* args = arguments fournis lors de l'appel à la fonction. *
* *
* Description : Détermine l'empreinte FNV1a d'une chaîne de caractères. *
* *
* Retour : Numéro de révision. *
* *
* Remarques : - *
* *
******************************************************************************/
static PyObject *py_fnv1a_hash(PyObject *self, PyObject *args)
{
PyObject *result; /* Instance à retourner */
const char *str; /* Chaîne à traiter. */
int ret; /* Bilan de lecture des args. */
fnv64_t value; /* Empreinte calculée */
#define FNV1A_HASH_METHOD PYTHON_METHOD_DEF \
( \
hash, "str, /", \
METH_VARARGS | METH_STATIC, py_fnv1a, \
"Compute the FNV-1a hash from a given string." \
)
ret = PyArg_ParseTuple(args, "s", &str);
if (!ret) return NULL;
value = fnv_64a_hash(str);
result = Py_BuildValue("K", (unsigned long long)value);
return result;
}
/******************************************************************************
* *
* Paramètres : - *
* *
* Description : Fournit un accès à une définition de type à diffuser. *
* *
* Retour : Définition d'objet pour Python. *
* *
* Remarques : - *
* *
******************************************************************************/
PyTypeObject *get_python_fnv1a_type(void)
{
static PyMethodDef py_fnv1a_methods[] = {
FNV1A_HASH_METHOD,
{ NULL }
};
static PyTypeObject py_fnv1a_type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "pychrysalide.common.fnv1a",
.tp_basicsize = sizeof(PyObject),
.tp_flags = Py_TPFLAGS_DEFAULT,
.tp_doc = FNV1A_DOC,
.tp_methods = py_fnv1a_methods,
.tp_new = no_python_constructor_allowed,
};
return &py_fnv1a_type;
}
/******************************************************************************
* *
* Paramètres : module = module dont la définition est à compléter. *
* *
* Description : Prend en charge l'objet 'pychrysalide.core.fnv1a'. *
* *
* Retour : Bilan de l'opération. *
* *
* Remarques : - *
* *
******************************************************************************/
bool ensure_python_fnv1a_is_registered(void)
{
PyTypeObject *type; /* Type Python pour 'fnv1a' */
PyObject *module; /* Module à recompléter */
type = get_python_fnv1a_type();
if (!PyType_HasFeature(type, Py_TPFLAGS_READY))
{
if (PyType_Ready(type) != 0)
return false;
module = get_access_to_python_module("pychrysalide.common");
if (!register_python_module_object(module, type))
return false;
}
return true;
}
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