Problem 1 part 1 is OK, part 2 in progress

CMakeLists.txt

@@ -1,6 +1,58 @@
 cmake_minimum_required(VERSION 3.27)
-project(AdventOfCode2023)
+project(AdventOfCode2023 CXX)
 
 set(CMAKE_CXX_STANDARD 20)
 
+find_package(PkgConfig REQUIRED)
+
+pkg_check_modules(Jemalloc REQUIRED jemalloc)
+
+set(LINKER_OPTIONS
+    PRIVATE -Wl,--sort-common,--as-needed,--gc-sections,--strip-all)
+
+set(COMPILE_FLAGS
+    -pipe
+    -march=native
+    -mtune=native
+    -mrdrnd
+    -mrdseed
+    -Wall
+    -Wextra
+    -Wpedantic
+    -ffunction-sections
+    -fdata-sections
+    -funroll-loops
+    -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-free
+)
+set(LINKER_OPTIONS
+    ${LINKER_OPTIONS}
+    -fuse-ld=gold
+)
+
+if (${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
+    set(COMPILE_FLAGS -stdlib=libc++ -Wmove ${COMPILE_FLAGS} -fwhole-program-vtables)
+    set(LINKER_OPTIONS ${LINKER_OPTIONS} -fwhole-program-vtables)
+    set(LINKER_FLAGS ${LINKER_FLAGS} c++)
+elseif (${CMAKE_CXX_COMPILER_ID} STREQUAL "GNU")
+    set(COMPILE_FLAGS ${COMPILE_FLAGS} -fuse-ld=gold -fdevirtualize-at-ltrans)
+    set(LINKER_OPTIONS ${LINKER_OPTIONS} -fdevirtualize-at-ltrans)
+    set(LINKER_FLAGS ${LINKER_FLAGS} stdc++)
+endif ()
+
+
 add_executable(AdventOfCode2023 main.cpp)
+
+add_library(pb_1 STATIC pb_1/problem_1.cpp pb_1/problem_1.hpp)
+
+
+set_target_properties(AdventOfCode2023 pb_1 PROPERTIES
+                      CXX_STANDARD 20
+                      CXX_STANDARD_REQUIRED ON
+                      CXX_EXTENSIONS OFF
+                      INTERPROCEDURAL_OPTIMIZATION ON
+                      UNITY_BUILD ON
+)
+target_compile_options(AdventOfCode2023 PUBLIC ${COMPILE_OPTIONS})
+target_link_options(AdventOfCode2023 PUBLIC ${LINKER_OPTIONS})
+target_link_libraries(AdventOfCode2023 PUBLIC pb_1 ${Jemalloc_LIBRARIES})
+target_link_libraries(pb_1 ${Jemalloc_LIBRARIES})

inputs/pb1_p2_sample.txt

@@ -0,0 +1,7 @@
+two1nine
+eightwothree
+abcone2threexyz
+xtwone3four
+4nineeightseven2
+zoneight234
+7pqrstsixteen

inputs/pb1_sample.txt

@@ -0,0 +1,4 @@
+1abc2
+pqr3stu8vwx
+a1b2c3d4e5f
+treb7uchet

main.cpp

@@ -1,6 +1,18 @@
 #include <iostream>
+#include "pb_1/problem_1.hpp"
 
 int main() {
-    std::cout << "Hello, World!\n";
+    {
+        std::cout << "Begin Problem 1 part 1\n";
+        if (const auto result = pb1::solve_problem_part1("inputs/pb1.txt"); result != 0) {
+            std::cout << "Problem 1 part1: " << result << '\n';
+        }
+    }
+    {
+        std::cout << "Begin Problem 1 part 2\n";
+        if (const auto result = pb1::solve_problem_part2("inputs/pb1_p2_sample.txt"); result != 0) {
+            std::cout << "Problem 1 part2: " << result << '\n';
+        }
+    }
     return EXIT_SUCCESS;
 }

pb_1/problem_1.cpp

@@ -0,0 +1,100 @@
+//
+// Created by postaron on 06/12/23.
+//
+
+#include "problem_1.hpp"
+#include <array>
+#include <vector>
+#include <fstream>
+#include <iostream>
+#include <format>
+
+namespace pb1 {
+    using namespace std::string_view_literals;
+
+    constexpr std::string_view digits = "0123456789";
+
+    constexpr std::array digitLetters{
+            "one"sv,
+            "two"sv,
+            "three"sv,
+            "four"sv,
+            "five"sv,
+            "six"sv,
+            "seven"sv,
+            "eight"sv,
+            "nine"sv,
+    };
+
+    std::optional<std::ifstream> read_file(const fs::path &problemFile) noexcept {
+        std::ifstream file(problemFile);
+        if (!file.is_open()) {
+            const auto error_state = file.rdstate();
+            switch (error_state) {
+                case std::ios::badbit:
+                    std::cerr << "Fatal I/O error occurred.\n";
+                    break;
+                case std::ios::eofbit:
+                    std::cerr << "End of file reached.\n";
+                    break;
+                case std::ios::failbit:
+                    std::cerr << "Non-fatal I/O error occurred.\n";
+                    break;
+                default:
+                    std::cerr << "impossible to reach.\n";
+                    break;
+            }
+            const auto path_string = problemFile.string();
+            const auto msg = std::format("Failed to open file {}: ", path_string);
+            std::perror(msg.c_str());
+            return std::nullopt;
+        }
+        return file;
+    }
+
+    void part1(const std::string_view &toSearch, std::size_t &result) noexcept {
+        const auto first_digit_pos = toSearch.find_first_of(digits);
+        if (first_digit_pos == std::string::npos) {
+            return;
+        }
+        const auto second_part = toSearch.substr(first_digit_pos);
+        const auto second_digit_pos = second_part.find_last_of(digits) + first_digit_pos;
+        result += (toSearch[first_digit_pos] - '0') * 10 + (toSearch[second_digit_pos] - '0');
+    }
+
+    std::size_t solve_problem_part1(const fs::path &problemFile) {
+        auto file_option = read_file(problemFile);
+        if (!file_option) {
+            return 0;
+        }
+        std::ifstream &file = *file_option;
+        std::size_t result = 0;
+        for (std::string line; std::getline(file, line);) {
+            part1(line, result);
+        }
+        return result;
+    }
+
+    void part2(const std::string_view &toSearch, std::vector<std::string> &splittedLine, std::size_t &result) noexcept {
+        std::string line_with_numbers;
+        line_with_numbers.reserve(toSearch.size());
+        for (int i = 0; i < toSearch.size(); ++i) {
+
+        }
+    }
+
+    std::size_t solve_problem_part2(const fs::path &problemFile) {
+        auto file_option = read_file(problemFile);
+        if (!file_option) {
+            return 0;
+        }
+        std::ifstream &file = *file_option;
+        std::vector<std::string> splitted_line;
+        std::size_t result = 0;
+        for (std::string line; std::getline(file, line);) {
+            part2(line, splitted_line, result);
+            splitted_line.clear();
+        }
+        return result;
+    }
+}

pb_1/problem_1.hpp

@@ -0,0 +1,17 @@
+//
+// Created by postaron on 06/12/23.
+//
+
+#ifndef ADVENTOFCODE2023_PROBLEM_1_HPP
+#define ADVENTOFCODE2023_PROBLEM_1_HPP
+
+#include <filesystem>
+
+namespace pb1 {
+    namespace fs = std::filesystem;
+    std::size_t solve_problem_part1(const fs::path& problemFile);
+
+    std::size_t solve_problem_part2(const fs::path& problemFile);
+}
+
+#endif //ADVENTOFCODE2023_PROBLEM_1_HPP