[#3209] Initial commit

Rewrote encoding/decoding.

src/lib/util/Makefile.am
    Removed old files, added encode.cc, encode.h

src/lib/util/encode/encode.*
    New implemenentation encoding and decoding not based
    on boost.

1 files changed, 70 insertions, 0 deletions

diff --git a/src/lib/util/encode/encode.h b/src/lib/util/encode/encode.h
new file mode 100644
index 0000000000..2e6bca0e54
--- /dev/null
+++ b/src/lib/util/encode/encode.h
@@ -0,0 +1,70 @@
+// Copyright (C) 2024 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef ENCODE_H
+#define ENCODE_H
+
+#include <stdint.h>
+#include <string>
+#include <vector>
+
+namespace isc {
+namespace util {
+namespace encode {
+
+/// @brief Encode binary data in the base32-hex format.
+///
+/// @param binary vector object storing the data to be encoded.
+/// @return string containing the base32-hex encoded value.
+std::string encodeBase32Hex(const std::vector<uint8_t>& binary);
+
+/// @brief Decode a base32-hex encoded string into binary data.
+///
+/// @param encoded_str string containing a base32-hex encoded value.
+/// @param[out] output vector into which the decoded binary data is stored.
+/// @throw BadValue if the input string is invalid.
+void decodeBase32Hex(const std::string& encoded_str, std::vector<uint8_t>& output);
+
+/// @brief Encode binary data in the base64 format.
+///
+/// @param binary vector object storing the data to be encoded.
+/// @return string containing the base64 encoded value.
+std::string encodeBase64(const std::vector<uint8_t>& binary);
+
+/// @brief Decode a base64 encoded string into binary data.
+///
+/// @param encoded_str string containing a base64 encoded value.
+/// @param[out] output vector into which the decoded binary data is stored.
+/// @throw BadValue if the input string is invalid.
+void decodeBase64(const std::string& encoded_str, std::vector<uint8_t>& output);
+
+/// @brief Encode binary data in the base16 format.
+///
+/// @param binary vector object containing the data to be encoded.
+/// @return string containing the base16 encoded value.
+std::string encodeHex(const std::vector<uint8_t>& binary);
+
+/// @brief Decode a base16 encoded string into binary data.
+///
+/// @param encoded_str string containing a base16 encoded value.
+/// @param[out] output vector into which the decoded binary data is stored.
+/// @throw BadValue if the input string is invalid.
+void decodeHex(const std::string& encoded_str, std::vector<uint8_t>& output);
+
+/// @brief Encode in hexadecimal inline
+///
+/// @param value the value to encode
+/// @return 0x followed by the value encoded in hexa
+inline std::string toHex(std::string value) {
+    std::vector<uint8_t> bin(value.begin(), value.end());
+    return ("0x" + encodeHex(bin));
+}
+
+} // namespace encode
+} // namespace util
+} // namespace isc
+
+#endif  // ENCODE_H