Initial commit

.gitignore

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+main.cpp
+build
+*.user
+*.swp
+scripts/build.sh

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.10)
+project(base64)
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+
+include_directories(include)
+
+add_executable(${PROJECT_NAME} main.cpp)
+

include/base64.hpp

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+#include <algorithm>
+#include <string>
+
+std::string to_base64(std::string const &data) {
+  int counter = 0;
+  uint32_t bit_stream = 0;
+
+  std::string base64_chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+                             "abcdefghijklmnopqrstuvwxyz"
+                             "0123456789+/";
+
+  std::string base64;
+  int offset = 0;
+  std::for_each(data.begin(), data.end(), [&](unsigned char c) {
+    auto num_val = static_cast<unsigned int>(c);
+    offset = 16 - counter % 3 * 8;
+    bit_stream += num_val << offset;
+    if (offset == 0 && counter != 3) {
+      base64 += base64_chars.at(bit_stream >> 18 & 0x3f);
+      base64 += base64_chars.at(bit_stream >> 12 & 0x3f);
+      base64 += base64_chars.at(bit_stream >> 6 & 0x3f);
+      base64 += base64_chars.at(bit_stream & 0x3f);
+      bit_stream = 0;
+    }
+    counter++;
+  });
+  if (offset == 16) {
+    base64 += base64_chars.at(bit_stream >> 18 & 0x3f);
+    base64 += base64_chars.at(bit_stream >> 12 & 0x3f);
+    base64 += '=';
+    base64 += '=';
+  }
+  if (offset == 8) {
+    base64 += base64_chars.at(bit_stream >> 18 & 0x3f);
+    base64 += base64_chars.at(bit_stream >> 12 & 0x3f);
+    base64 += base64_chars.at(bit_stream >> 6 & 0x3f);
+    base64 += '=';
+  }
+  return base64;
+}

scripts/run-clang-format.sh

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+#!/bin/bash
+#clang-format -verbose -i -style=file src/*.cpp
+#clang-format -verbose -i -style=file test/*.cpp
+clang-format -verbose -i -style=file include/*.hpp