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diff --git a/third_party/hexdump/hexdump.h b/third_party/hexdump/hexdump.h
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+/**
+ * Copyright (c) 2014, Zac Bergquist
+ * Copyright (c) 2021, Evgeny Zinoviev
+ * All rights reserved.
+ *
+ * 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. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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 THIRD_PARTY_HEXDUMP_H_
+#define THIRD_PARTY_HEXDUMP_H_
+
+#include <cctype>
+#include <iomanip>
+#include <ostream>
+#include <ios>
+
+template <unsigned rows, bool ascii>
+class custom_hexdump {
+public:
+    custom_hexdump(void* data, unsigned length) :
+            data(static_cast<unsigned char*>(data)), length(length) { }
+
+    const unsigned char* data;
+    const unsigned length;
+};
+
+template <unsigned rows, bool ascii>
+std::ostream& operator<<(std::ostream& out, const custom_hexdump<rows, ascii>& dump)
+{
+    // save state
+    std::ios_base::fmtflags f(out.flags());
+
+    out.fill('0');
+    for (int i = 0; i < dump.length; i += rows) {
+        out << "0x" << std::setw(4) << std::hex << i << ": ";
+        for (int j = 0; j < rows; ++j) {
+            if (i + j < dump.length) {
+                out << std::hex << std::setw(2) << static_cast<int>(dump.data[i + j]) << " ";
+            } else {
+                out << "   ";
+            }
+        }
+
+        out << " ";
+        if (ascii) {
+            for (int j = 0; j < rows; ++j) {
+                if (i + j < dump.length) {
+                    if (std::isprint(dump.data[i + j])) {
+                        out << static_cast<char>(dump.data[i + j]);
+                    } else {
+                        out << ".";
+                    }
+                }
+            }
+        }
+        out << std::endl;
+    }
+
+    // restore state
+    out.flags(f);
+
+    return out;
+}
+
+typedef custom_hexdump<16, true> hexdump;
+
+#endif // THIRD_PARTY_HEXDUMP_H_
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