Decode checksums block on opening.

tool/helpers.c

@@ -0,0 +1,52 @@
+/*
+ * This file is part of the Aaru Data Preservation Suite.
+ * Copyright (c) 2019-2022 Natalia Portillo.
+ *
+ * This program 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "aaruformattool.h"
+
+char* byte_array_to_hex_string(const unsigned char* array, int array_size)
+{
+    char* hex_string = NULL;
+    int   j;
+    int   i;
+
+    hex_string = malloc(array_size * 2 + 1);
+
+    if(hex_string == NULL) return NULL;
+
+    j = 0;
+    for(i = 0; i < array_size; i++)
+    {
+        hex_string[j] = (array[i] >> 4) + '0';
+        if(hex_string[j] > '9') hex_string[j] += 0x7;
+
+        j++;
+
+        hex_string[j] = (array[i] & 0xF) + '0';
+        if(hex_string[j] > '9') hex_string[j] += 0x7;
+
+        j++;
+    }
+
+    hex_string[j] = 0;
+
+    return hex_string;
+}