context: Add program directory's path

includes/context.hpp

@@ -33,6 +33,7 @@ typedef struct ctx {
   std::shared_ptr<Selection> selection = nullptr;
   std::shared_ptr<PaternsMenu> paterns_menu = nullptr;
   nlohmann::json config_json;
+  std::filesystem::path program_dir;
 } ctx;
 
 } // namespace gol

src/main.cpp

@@ -82,6 +82,15 @@ int main(int ac, char **av) {
     context->config_json["fps"] = 800;
   }
 
+  // Get program directory
+  char path_buf[1024];
+  ssize_t len = readlink("/proc/self/exe", path_buf, sizeof(path_buf)-1);
+  if (len == -1) {
+    std::cerr << "Failed to determine program directory" << std::endl;
+    return 1;
+  }
+  context->program_dir = std::filesystem::path(path_buf).parent_path();
+
   InitWindow(context->config_json["screen_width"], context->config_json["screen_height"],
              &av[0][2]);
 

src/selection_menu.cpp

@@ -62,41 +62,37 @@ void SelectionMenu::display() {
     rlImGuiImageSize(&selectionTexture_.texture, 200, 200);
     ImGui::InputText("patern_name", patern_name_, 255);
     if (ImGui::Button("Save")) {
-      char path_buf[1024];
+      // Create paterns dir if not present
-      ssize_t len = readlink("/proc/self/exe", path_buf, sizeof(path_buf)-1);
+      std::filesystem::path paterns_dir = context_->program_dir / "paterns";
-      if (len != -1) {
+      if (!std::filesystem::exists(paterns_dir) && !std::filesystem::create_directory(paterns_dir)) {
-        // Create paterns dir if not present
+        std::cerr << "Failed to create paterns directory" << std::endl;
-        std::filesystem::path paterns_dir = std::filesystem::path(path_buf).parent_path() / "paterns";
+      } else { // Could be optimized by early returning in a function
-        if (!std::filesystem::exists(paterns_dir) && !std::filesystem::create_directory(paterns_dir)) {
+        std::ofstream patern_file;
-          std::cerr << "Failed to create paterns directory" << std::endl;
+        paterns_dir += '/';
-        } else { // Could be optimized by early returning in a function
+        paterns_dir += patern_name_;
-          std::ofstream patern_file;
+        patern_file.open(paterns_dir);
-          paterns_dir += '/';
+        if (!patern_file) {
-          paterns_dir += patern_name_;
+          std::cerr << "Failed to create the patern file" << std::endl;
-          patern_file.open(paterns_dir);
+        } else {
-          if (!patern_file) {
+          auto sel_it = sel_data_.begin();
-            std::cerr << "Failed to create the patern file" << std::endl;
+          sel_it += 2; // skip dimensions
-          } else {
+          patern_file << sel_data_[0];
-            auto sel_it = sel_data_.begin();
+          patern_file << "|"; // Separator needed to split as ascii values
-            sel_it += 2; // skip dimensions
+          patern_file << sel_data_[1];
-            patern_file << sel_data_[0];
+          patern_file << "|"; // Separator needed to split as ascii values
-            patern_file << "|"; // Separator needed to split as ascii values
+          for (int j = 0; j < sel_data_[1]; j++) {
-            patern_file << sel_data_[1];
+            for (int i = 0; i < sel_data_[0]; i++) {
-            patern_file << "|"; // Separator needed to split as ascii values
+              patern_file << std::to_string(*sel_it);
-            for (int j = 0; j < sel_data_[1]; j++) {
+              if (*sel_it == 1) {
-              for (int i = 0; i < sel_data_[0]; i++) {
-                patern_file << std::to_string(*sel_it);
-                if (*sel_it == 1) {
-                }
-                sel_it++;
               }
+              sel_it++;
             }
-            patern_file << std::flush;
-            patern_file.close();
           }
+          patern_file << std::flush;
+          patern_file.close();
         }
-        sel_ctrl_ = false;
       }
+      sel_ctrl_ = false;
     }
     ImGui::SameLine();
     if (ImGui::Button("Discard")) {