Copyrights and hexadecmal.

diff --git a/hexdump.h b/hexdump.h
new file mode 100644 (file)
index 0000000..f72a473
--- /dev/null
+++ b/hexdump.h
@@ -0,0 +1,74 @@
+/* Minimal - the simplest thing that could possibly work
+ * Copyright (C) 2007  Jay Freeman (saurik)
+*/
+
+/*
+ *        Redistribution and use in source and binary
+ * forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the
+ *    above copyright notice, this list of conditions
+ *    and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the
+ *    above copyright notice, this list of conditions
+ *    and the following disclaimer in the documentation
+ *    and/or other materials provided with the
+ *    distribution.
+ * 3. The name of the author may not be used to endorse
+ *    or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+ * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef MINIMAL_HEXDUMP_H
+#define MINIMAL_HEXDUMP_H
+
+#include "minimal/stdlib.h"
+
+char hexchar(uint8_t value) {
+    return value < 0x20 || value >= 0x80 ? '.' : value;
+}
+
+void hexdump(const char *mark, const uint8_t *data, size_t size) {
+    int i = 0, j;
+
+    while (i != size) {
+        if (i % 16 == 0)
+            printf("[%s] 0x%.3x:", mark, i);
+
+        printf(" %.2x", data[i]);
+
+        if (++i % 16 == 0) {
+            printf("  ");
+            for (j = i - 16; j != i; ++j)
+                printf("%c", hexchar(data[j]));
+            printf("\n");
+        }
+    }
+
+    if (i % 16 != 0) {
+        for (j = i % 16; j != 16; ++j)
+            printf("   ");
+        printf("  ");
+        for (j = i / 16 * 16; j != i; ++j)
+            printf("%c", hexchar(data[j]));
+        printf("\n");
+    }
+}
+
+#endif/*MINIMAL_HEXDUMP_H*/
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