From a62088539ed02a8569814601b3b99b713c5d8a34 Mon Sep 17 00:00:00 2001
From: Lioncash <mathew1800@gmail.com>
Date: Wed, 12 Jun 2019 17:27:06 -0400
Subject: common/hex_util: Combine HexVectorToString() and HexArrayToString()

These can be generified together by using a concept type to designate
them. This also has the benefit of not making copies of potentially very
large arrays.
---
 src/common/hex_util.cpp |  7 -------
 src/common/hex_util.h   | 11 +++++++----
 2 files changed, 7 insertions(+), 11 deletions(-)

(limited to 'src/common')

diff --git a/src/common/hex_util.cpp b/src/common/hex_util.cpp
index 5b63f9e81..c2f6cf0f6 100644
--- a/src/common/hex_util.cpp
+++ b/src/common/hex_util.cpp
@@ -30,13 +30,6 @@ std::vector<u8> HexStringToVector(std::string_view str, bool little_endian) {
     return out;
 }
 
-std::string HexVectorToString(const std::vector<u8>& vector, bool upper) {
-    std::string out;
-    for (u8 c : vector)
-        out += fmt::format(upper ? "{:02X}" : "{:02x}", c);
-    return out;
-}
-
 std::array<u8, 16> operator""_array16(const char* str, std::size_t len) {
     if (len != 32) {
         LOG_ERROR(Common,
diff --git a/src/common/hex_util.h b/src/common/hex_util.h
index 68f003cb6..a64c9b485 100644
--- a/src/common/hex_util.h
+++ b/src/common/hex_util.h
@@ -7,6 +7,7 @@
 #include <array>
 #include <cstddef>
 #include <string>
+#include <type_traits>
 #include <vector>
 #include <fmt/format.h>
 #include "common/common_types.h"
@@ -30,13 +31,15 @@ std::array<u8, Size> HexStringToArray(std::string_view str) {
     return out;
 }
 
-std::string HexVectorToString(const std::vector<u8>& vector, bool upper = true);
+template <typename ContiguousContainer>
+std::string HexToString(const ContiguousContainer& data, bool upper = true) {
+    static_assert(std::is_same_v<typename ContiguousContainer::value_type, u8>,
+                  "Underlying type within the contiguous container must be u8.");
 
-template <std::size_t Size>
-std::string HexArrayToString(std::array<u8, Size> array, bool upper = true) {
     std::string out;
-    for (u8 c : array)
+    for (const u8 c : data) {
         out += fmt::format(upper ? "{:02X}" : "{:02x}", c);
+    }
     return out;
 }
 
-- 
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