From 891258b135000eda6f95f2a38db37bc073b0502b Mon Sep 17 00:00:00 2001
From: Cyrille Bagard <nocbos@gmail.com>
Date: Mon, 15 May 2023 08:18:27 +0200
Subject: Handle strings with length for parsing.
---
src/common/szstr.h | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 76 insertions(+)
create mode 100644 src/common/szstr.h
diff --git a/src/common/szstr.h b/src/common/szstr.h
new file mode 100644
index 0000000..aadbb28
--- /dev/null
+++ b/src/common/szstr.h
@@ -0,0 +1,76 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * szstr.h - prototypes pour une manipulation de chaînes issues de Flex/Bison
+ *
+ * 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 Chrysalide. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#ifndef _COMMON_SZSTR_H
+#define _COMMON_SZSTR_H
+
+
+#include <string.h>
+#include <sys/types.h>
+
+
+
+/* Structure associant une chaîne et sa taille */
+typedef struct _sized_string_t
+{
+ char *data; /* Chaîne de caractères */
+ size_t len; /* Taille correspondante */
+
+} sized_string_t;
+
+
+#define init_szstr(s) \
+ do \
+ { \
+ (s)->data = NULL; \
+ (s)->len = 0; \
+ } \
+ while (0)
+
+#define exit_szstr(s) \
+ do \
+ { \
+ if ((s)->data != NULL) \
+ { \
+ free((s)->data); \
+ init_szstr(s); \
+ } \
+ } \
+ while (0)
+
+#define szstrcmp(ss, rs) \
+ strncmp((ss)->data, rs, (ss)->len)
+
+#define szmemcmp(s1, s2) \
+ ({ \
+ int __result; \
+ size_t __n; \
+ __n = (s1)->len < (s2)->len ? (s1)->len : (s2)->len; \
+ __result = memcmp((s1)->data, (s2)->data, __n); \
+ if (__result == 0 && (s1)->len != (s2)->len) \
+ __result = (s1)->len < (s2)->len ? -1 : 1; \
+ __result; \
+ })
+
+
+#endif /* _COMMON_SZSTR_H */
--
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