base infra

.gitignore

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+.cache
+build
+day*_input.h

.vscode/launch.json

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+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "lldb",
+            "request": "launch",
+            "name": "Launch",
+            "program": "${workspaceFolder}/build/adventofcode/adventofcode",
+            "args": ["2024", "1", "1"],
+            "cwd": "${workspaceFolder}",
+            "preLaunchTask": "CMake: build",
+        }
+    ]
+}

2024/CMakeLists.txt

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+add_library(2024 SHARED)
+
+foreach(i RANGE 1 1)
+    set(out_path "${CMAKE_CURRENT_SOURCE_DIR}/src/include/day${i}_input.h")
+    add_custom_command(
+        OUTPUT "${CMAKE_CURRENT_SOURCE_DIR}/src/include/day${i}_input.h"
+        COMMAND xxd -i input/day${i}.txt > src/include/day${i}_input.h
+        WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}" 
+    )
+    list(APPEND adv_input ${out_path})
+endforeach()
+
+add_custom_target(prebuild_target DEPENDS ${adv_input})
+
+add_dependencies(2024 prebuild_target)
+target_sources(2024
+    PRIVATE 
+    src/day1.c
+)

2024/src/day1.c

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+void *day_1_part_1() {
+    return "yes";
+}

2024/src/include/days.h

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+#include "day1.h"
+
+char *day_1_part_1(void);

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.20)
+project(advent_of_code
+    DESCRIPTION "bad code for a good thing"
+    HOMEPAGE_URL https://adventofcode.com
+    LANGUAGES C #of course
+)
+
+add_subdirectory(adventofcode)
+add_subdirectory(2024)

adventofcode/CMakeLists.txt

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+add_executable(adventofcode)
+
+target_sources(adventofcode
+    PRIVATE
+        src/main.c
+)
+target_link_libraries(adventofcode PRIVATE 2024)

adventofcode/src/main.c

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+/*
+    main.c
+    AdventOfCode
+
+    Author: thebread (contact@thebread.dev)
+    Date: 01.12.2024
+*/
+
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <dlfcn.h>
+
+
+int main(int argc, char** argv) {
+    int err = 0; 
+    if(argc == 4) {
+        int year = strtoimax(argv[1], NULL, 10);
+        int day = strtoimax(argv[2], NULL, 10);
+        int part = strtoimax(argv[3], NULL, 10);
+
+        // TODO: clean this mess up
+        if (year != 2024 || (day < 1 || day > 25) || (part < 1 || part > 2)) {
+            err = 2;
+        } else {
+            fprintf(stderr, "Calling year %d day %d part %d\n", year, day, part);
+
+            char *template = "lib%d.so";
+            size_t len = snprintf(NULL, 0, template, year) +1;
+            char *libname = malloc(len);
+            snprintf(libname, len, template, year);
+
+            void *handle = dlopen(libname, RTLD_LAZY);
+            if(!handle) {
+                fprintf(stderr, "Year %s not implemented! (%s)\n", argv[1], libname);
+                err = 3;
+            } else {
+                char *template = "day_%d_part_%d";
+                size_t len = snprintf(NULL, 0, template, day, part) +1;
+                char *fname = malloc(len);
+                snprintf(fname, len, template, day, part);
+                
+                char *(*part_func)(void) = dlsym(handle, fname);
+
+                if(part_func) {
+                    fprintf(stderr, "day %s part %s: %s\n", argv[2], argv[3], part_func());
+                } else {
+                    fprintf(stderr, "Failed to call %s", fname);
+                    err = 4;
+                }
+
+                free(fname);
+                dlclose(handle);
+            }
+            free(libname);
+        }
+    } else {
+        fprintf(stderr, "Usage: adventofcode <year> <day> <part>\n");
+        err = 1;
+    }
+    
+    return err;
+}