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diff --git a/src/analysis/scan/patterns/tokens/atom.h b/src/analysis/scan/patterns/tokens/atom.h
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+++ b/src/analysis/scan/patterns/tokens/atom.h
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+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * atom.h - prototypes pour la détermination d'atomes à partir de motifs
+ *
+ * Copyright (C) 2023 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 Foobar.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#ifndef _ANALYSIS_SCAN_PATTERNS_TOKENS_ATOM_H
+#define _ANALYSIS_SCAN_PATTERNS_TOKENS_ATOM_H
+
+
+#include <stdbool.h>
+
+
+#include "../backend.h"
+#include "../../context.h"
+#include "../../../../arch/vmpa.h"
+#include "../../../../common/bits.h"
+#include "../../../../common/szstr.h"
+
+
+
+/* Suivi des motifs réellement recherchés */
+typedef struct _tracked_scan_atom_t
+{
+    phys_t pos;                             /* Début de sélection atomique */
+    phys_t len;                             /* Taille de ladite sélection  */
+    phys_t rem;                             /* Reste après l'atome         */
+
+    patid_t pid;                            /* Identifiant de la bribe     */
+
+} tracked_scan_atom_t;
+
+
+/* Note l'intêret de rechercher un octet particulier. */
+int rate_byte_quality(bin_t, bitfield_t *, size_t *);
+
+/* Termine la notation d'un ensemble d'octets. */
+int finish_quality_rating(const bitfield_t *, size_t);
+
+/* Détermine la portion idéale de recherche. */
+void find_best_atom(const sized_binary_t *, size_t , tracked_scan_atom_t *, size_t *);
+
+/* Etablit la liste des cas de figures ignorant la casse. */
+sized_binary_t *make_atoms_case_insensitive(const sized_binary_t *, size_t);
+
+/* Enregistre l'atome déterminé d'une série d'octets. */
+bool enroll_prepared_atom(const sized_binary_t *, GScanContext *, GEngineBackend *, tracked_scan_atom_t *);
+
+
+
+#endif  /* _ANALYSIS_SCAN_PATTERNS_TOKENS_ATOM_H */