Add file_to_c

Author: hyperbx

tools/file_to_c/CMakeLists.txt

@@ -0,0 +1,5 @@
+cmake_minimum_required(VERSION 3.20)
+project(file_to_c)
+set(CMAKE_CXX_STANDARD 17)
+
+add_executable(file_to_c "file_to_c.cpp")

tools/file_to_c/file_to_c.cpp

@@ -0,0 +1,105 @@
+/*
+    MIT License
+    
+    Copyright (c) 2024 RT64 Contributors
+    
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+    
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+    
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+    SOFTWARE.
+*/
+
+#include <filesystem>
+#include <fstream>
+#include <cstdio>
+#include <vector>
+
+std::vector<char> read_file(const char* path) {
+    std::ifstream input_file{path, std::ios::binary};
+    std::vector<char> ret{};
+
+    if (!input_file.good()) {
+        return ret;
+    }
+
+    // Get the length of the file
+    input_file.seekg(0, std::ios::end);
+    ret.resize(input_file.tellg());
+    
+    // Read the file contents into the vector
+    input_file.seekg(0, std::ios::beg);
+    input_file.read(ret.data(), ret.size());
+
+    return ret;
+}
+
+void create_parent_if_needed(const char* path) {
+    std::filesystem::path parent_path = std::filesystem::path{path}.parent_path();
+    if (!parent_path.empty()) {
+        std::filesystem::create_directories(parent_path);
+    }
+}
+
+int main(int argc, const char** argv) {
+    if (argc != 6) {
+        printf("Usage: %s [input file] [array name] [array type] [output C file] [output C header]\n", argv[0]);
+        return EXIT_SUCCESS;
+    }
+
+    const char* input_path = argv[1];
+    const char* array_name = argv[2];
+    const char* array_type = argv[3];
+    const char* output_c_path = argv[4];
+    const char* output_h_path = argv[5];
+
+    // Read the input file's contents
+    std::vector<char> contents = read_file(input_path);
+
+    if (contents.empty()) {
+        fprintf(stderr, "Failed to open file %s! (Or it's empty)\n", input_path);
+        return EXIT_FAILURE;
+    }
+
+    // Create the output directories if they don't exist
+    create_parent_if_needed(output_c_path);
+    create_parent_if_needed(output_h_path);
+
+    // Write the C file with the array
+    {
+        std::ofstream output_c_file{output_c_path};
+        output_c_file << "extern " << array_type << " " << array_name << "[" << contents.size() << "];\n";
+        output_c_file << array_type << " " << array_name << "[" << contents.size() << "] = {";
+
+        for (char x : contents) {
+            output_c_file << (int)x << ", ";
+        }
+
+        output_c_file << "};\n";
+    }
+
+    // Write the header file with the extern array
+    {
+        std::ofstream output_h_file{output_h_path};
+        output_h_file <<
+            "#ifdef __cplusplus\n"
+            "  extern \"C\" {\n"
+            "#endif\n"
+            "extern " << array_type << " " << array_name << "[" << contents.size() << "];\n"
+            "#ifdef __cplusplus\n"
+            "  }\n"
+            "#endif\n";
+    }
+}