1 files changed, 71 insertions, 0 deletions
diff --git a/src/common/ibuf.h b/src/common/ibuf.h
new file mode 100644
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+++ b/src/common/ibuf.h
@@ -0,0 +1,71 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * ibuf.h - prototypes pour la lecture progressive d'un tampon de données
+ *
+ * Copyright (C) 2018 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 _COMMON_IBUF_H
+#define _COMMON_IBUF_H
+
+
+#include <stdint.h>
+#include <sys/types.h>
+
+
+
+/* Rassemblement de données d'un tampon */
+typedef struct _input_buffer
+{
+    union
+    {
+        const char *text;                   /* Contenu textuel disponible  */
+        const uint8_t *data;                /* Données brutes à traiter    */
+    };
+
+    size_t len;                             /* Quantité d'octets présents  */
+    size_t pos;                             /* Position de tête de lecture */
+
+} input_buffer;
+
+
+/* Initialise un contenu textuel pour une lecture ultérieure. */
+void init_text_input_buffer(input_buffer *, const char *);
+
+/* Compte le nombre d'octets encore non lus. */
+size_t count_input_buffer_remaining(const input_buffer *);
+
+/* Avance la tête de lecture dans le tampon de données. */
+void advance_input_buffer(input_buffer *, size_t);
+
+/* Fournit un accès brut au niveau de la tête de lecture. */
+const char *get_input_buffer_text_access(const input_buffer *);
+
+/* Fournit et avance la tête de lecture courante. */
+char text_input_buffer_next_char(input_buffer *);
+
+/* Note la position courante de la tête de lecture. */
+void save_input_buffer_pos(const input_buffer *, size_t *);
+
+/* Restaure la position de la tête de lecture. */
+void restore_input_buffer_pos(input_buffer *, size_t);
+
+
+
+#endif  /* _COMMON_IBUF_H */