1 files changed, 55 insertions, 0 deletions
diff --git a/src/util.c b/src/util.c
new file mode 100644
index 0000000..32071fd
--- /dev/null
+++ b/src/util.c
@@ -0,0 +1,55 @@
+#include "project.h"
+
+void
+hexdump (FILE * f, uint8_t * data, int s, int l)
+{
+  int e = s + l - 1;
+  int b = s & ~15;
+  int a = (e | 15) + 1;
+  int i, j;
+
+  for (i = b; i < a; i += 16)
+    {
+      fprintf (f, "      %04x: ", i);
+      for (j = i; j < (i + 16); ++j)
+        {
+          if (j == (i + 8))
+            fprintf (f, " ");
+
+          if ((j >= s) && (j <= e))
+            {
+              fprintf (f, "%02x ", data[j]);
+            }
+          else
+            {
+              fprintf (f, "   ");
+            }
+        }
+
+      for (j = i; j < (i + 16); ++j)
+        {
+
+          if (j == (i + 8))
+            fprintf (f, " ");
+
+
+          if ((j >= s) && (j <= e))
+            {
+              uint8_t c = data[j];
+              if ((c < ' ') || (c > 126))
+                c = '.';
+              fprintf (f, "%c", c);
+            }
+          else
+            {
+              fprintf (f, " ");
+            }
+        }
+
+
+      fprintf (f, "\n");
+    }
+
+}
+
+