1 files changed, 48 insertions, 0 deletions
diff --git a/mocktracer/src/base64.h b/mocktracer/src/base64.h
new file mode 100644
index 0000000..438bbda
--- /dev/null
+++ b/mocktracer/src/base64.h
@@ -0,0 +1,48 @@
+#ifndef OPENTRACING_MOCKTRACER_BASE64_H
+#define OPENTRACING_MOCKTRACER_BASE64_H
+
+#include <opentracing/version.h>
+#include <cstdint>
+#include <string>
+
+namespace opentracing {
+BEGIN_OPENTRACING_ABI_NAMESPACE
+namespace mocktracer {
+class Base64 {
+ public:
+  /**
+   * Base64 encode an input char buffer with a given length.
+   * @param input char array to encode.
+   * @param length of the input array.
+   */
+  static std::string encode(const char* input, uint64_t length);
+
+  /**
+   * Base64 decode an input string.
+   * @param input char array to decode.
+   * @param length of the input array.
+   *
+   * Note, decoded string may contain '\0' at any position, it should be treated
+   * as a sequence of bytes.
+   */
+  static std::string decode(const char* input, size_t length);
+
+ private:
+  /**
+   * Helper method for encoding. This is used to encode all of the characters
+   * from the input string.
+   */
+  static void encodeBase(const uint8_t cur_char, uint64_t pos, uint8_t& next_c,
+                         std::string& ret);
+
+  /**
+   * Encode last characters. It appends '=' chars to the ret if input
+   * string length is not divisible by 3.
+   */
+  static void encodeLast(uint64_t pos, uint8_t last_char, std::string& ret);
+};
+}  // namespace mocktracer
+END_OPENTRACING_ABI_NAMESPACE
+}  // namespace opentracing
+
+#endif  // OPENTRACING_MOCKTRACER_BASE64_H