Prepare day01 2025

Change-Id: Id3c46f5f552db5a0ba200dedc1ea4e4434932982

2025/day01.cpp

@@ -1,13 +1,88 @@
 #include <span>
+#include <algorithm>
+#include <cmath>
+#include <numeric>
+#include <ranges>
+#include <string>
+#include <string_view>
+#include <utility>
+#include <vector>
+
+#include "fmt/std.h"
+
+#include "aoc/types.hpp"
+#include "aoc/utils.hpp"
+
+using namespace std::string_view_literals;
+using namespace aoc::types;
+
+// simple pipe for std::string by value
+template <typename F>
+auto operator|(std::string s, F&& f) -> decltype(auto) {
+    return std::forward<F>(f)(std::move(s));
+}
+
+auto ltrim(std::string s) -> std::string {
+    s.erase(
+        std::begin(s),
+        std::find_if(s.begin(), s.end(), [](char ch) {
+            return !std::isspace(static_cast<char>(ch));
+        }));
+    return s;
+}
+
+auto rtrim(std::string s) -> std::string {
+    s.erase(
+        std::find_if(s.rbegin(), s.rend(), [](char ch) {
+            return !std::isspace(static_cast<char>(ch));
+        }).base(),
+        s.end());
+    return s;
+}
+
+auto trim(std::string s) -> std::string {
+    return ltrim(rtrim(std::move(s)));
+}
+
+// starts at 50
+constexpr auto raw_str = R"(
+L68
+L30
+R48
+L5
+R60
+L55
+L1
+L99
+R14
+L82
+)";
+
+enum class rotdir {
+    L,
+    R
+};
+
+struct rot {
+    rotdir dir;
+    u32 turns;
+};
 
 static auto entry([[maybe_unused]]std::span<char const*> const& args) -> void {
+    std::string str{raw_str};
+    str = str | trim;
+    fmt::print("{}\n", str);
+
+    auto rot_vec = str | std::views::split("\n"sv) | std::views::transform([](auto const& str) {
+            return 0;
+        }) | std::ranges::to<std::vector>();
 }
 
 auto main([[maybe_unused]]int argc, [[maybe_unused]]char const* argv[]) -> int {
     try {
         entry({argv, std::next(argv, argc)});
     } catch (std::exception const& e) {
-        (void)e;
+        fmt::print(stderr, "{}\n", e.what());
         return 1;
     }
     return 0;