Better lookup of home directory, fixing rest of paths that were concatinated incorrectly, removal of singletons that aren't singletons

src/config.cc

@@ -8,14 +8,24 @@
 using namespace std; //TODO: remove
 
 MainConfig::MainConfig() {
-  find_or_create_config_files();
+  auto search_envs = init_home_path();
+  auto config_json = (home/"config"/"config.json").string(); // This causes some redundant copies, but assures windows support
   try {
-    boost::property_tree::json_parser::read_json(Singleton::config_json(), cfg);
+    find_or_create_config_files();
+    if(home.empty()) {
+      std::string searched_envs = "[";
+      for(auto &env : search_envs)
+        searched_envs+=env+", ";
+      searched_envs.erase(searched_envs.end()-2, searched_envs.end());
+      searched_envs+="]";
+      throw std::runtime_error("One of these environment variables needs to point to a writable directory to save configuration." + searched_envs);
+    }
+    boost::property_tree::json_parser::read_json(config_json, cfg);
     update_config_file();
     retrieve_config();
   }
   catch(const std::exception &e) {
-    Singleton::terminal()->print("Error reading "+ Singleton::config_json()+": "+e.what()+"\n");
+    Singleton::terminal()->print("Error reading "+ config_json + ": "+e.what()+"\n");
     std::stringstream ss;
     ss << configjson;
     boost::property_tree::read_json(ss, cfg);
@@ -24,27 +34,28 @@ MainConfig::MainConfig() {
 }
 
 void MainConfig::find_or_create_config_files() {
-  std::vector<std::string> files = {"config.json", "plugins.py"};
-  boost::filesystem::create_directories(boost::filesystem::path(Singleton::config_dir()));
-  for (auto &file : files) {
-    auto path = Singleton::config_dir();
-    path /= file;
-    if (!boost::filesystem::is_regular_file(path)) {
-      if (file == "config.json") filesystem::write(path, configjson);
-      if (file == "plugins.py") filesystem::write(path, pluginspy);
-    }
-  }
-  
-  boost::filesystem::create_directories(boost::filesystem::path(Singleton::style_dir()));
-  auto juci_style_path=Singleton::style_dir();
+  auto config_dir = home/"config";
+  auto config_json = config_dir/"config.json";
+  auto plugins_py = config_dir/"plugins.py";
+
+  boost::filesystem::create_directories(config_dir); // io exp captured by calling method
+
+  if (!boost::filesystem::exists(config_json))
+    filesystem::write(config_json, configjson); // vars configjson and pluginspy
+  if (!boost::filesystem::exists(plugins_py))   // live in files.h
+    filesystem::write(plugins_py, pluginspy);
+
+  auto juci_style_path = home/"styles";
+  boost::filesystem::create_directories(juci_style_path); // io exp captured by calling method
+
   juci_style_path/="juci-light.xml";
   if(!boost::filesystem::exists(juci_style_path))
     filesystem::write(juci_style_path, juci_light_style);
-  juci_style_path=Singleton::style_dir();
+  juci_style_path=juci_style_path.parent_path();
   juci_style_path/="juci-dark.xml";
   if(!boost::filesystem::exists(juci_style_path))
     filesystem::write(juci_style_path, juci_dark_style);
-  juci_style_path=Singleton::style_dir();
+  juci_style_path=juci_style_path.parent_path();
   juci_style_path/="juci-dark-blue.xml";
   if(!boost::filesystem::exists(juci_style_path))
     filesystem::write(juci_style_path, juci_dark_blue_style);
@@ -107,7 +118,7 @@ void MainConfig::update_config_file() {
   }
   cfg_ok&=check_config_file(default_cfg);
   if(!cfg_ok) {
-    boost::property_tree::write_json(Singleton::config_json(), cfg);
+    boost::property_tree::write_json((home/"config"/"config.json").string(), cfg);
   }
 }
 
@@ -157,3 +168,20 @@ void MainConfig::GenerateDirectoryFilter() {
     dir_cfg->ignored.emplace_back(i.second.get_value<std::string>());
   JDEBUG("Directory filter fetched");
 }
+std::vector<std::string> MainConfig::init_home_path(){
+  std::vector<std::string> locations = JUCI_ENV_SEARCH_LOCATIONS;
+  char *ptr = nullptr;
+  for (auto &env : locations) {
+    ptr=std::getenv(env.c_str());
+    if (ptr==nullptr)
+      break;
+    else
+      if (boost::filesystem::exists(ptr)) {
+        home /= ".juci";
+        home /= ptr;
+        return locations;
+      }
+  }
+  home="";
+  return locations;
+}

src/config.h

@@ -13,7 +13,11 @@ public:
   void PrintMenu();
   void GenerateSource();
   void GenerateDirectoryFilter();
+  const boost::filesystem::path& juci_home_path() { return home; } const;
+
 private:
+  std::vector<std::string> init_home_path();
   boost::property_tree::ptree cfg;
+  boost::filesystem::path home;
 };
 #endif

src/files.h

@@ -2,6 +2,8 @@
 
 #define JUCI_VERSION "0.9.3"
 
+#define JUCI_ENV_SEARCH_LOCATIONS {"AppData", "HOME", "JUCI_HOME"}
+
 const std::string configjson =
 "{\n"
 "    \"version\": \""+std::string(JUCI_VERSION)+"\",\n"

src/filesystem.cc

@@ -18,40 +18,6 @@ std::string filesystem::read(const std::string &path) {
   return ss.str();
 }
 
-std::string safe_get_env(const std::string &env) {
-  auto ptr = std::getenv(env.c_str());
-  return nullptr==ptr ? "" : std::string(ptr);
-}
-
-/**
- * Returns home folder, empty on error
- */
-boost::filesystem::path filesystem::get_home_folder() {
-  auto home=safe_get_env("HOME");
-  if(home.empty())
-    home=safe_get_env("AppData");
-  auto status = boost::filesystem::status(home);
-  if((status.permissions() & 0222)>=2) {
-    return home;
-  } else {
-    JERROR("No write permissions in home, var:");
-    DEBUG_VAR(home);
-    return "";
-  }
-}
-
-/**
- * Returns tmp folder, empty on error.
- */
-boost::filesystem::path filesystem::get_tmp_folder() {
-  boost::system::error_code code;
-  auto path = boost::filesystem::temp_directory_path(code);
-  if (code.value()!=0) {
-    return "";
-  }
-  return path;
-}
-
 int filesystem::read(const std::string &path, Glib::RefPtr<Gtk::TextBuffer> text_buffer) {
   std::ifstream input(path, std::ofstream::binary);
   

src/filesystem.h

@@ -25,7 +25,5 @@ public:
   static bool write(const std::string &path, Glib::RefPtr<Gtk::TextBuffer> text_buffer);
   static bool write(const boost::filesystem::path &path, Glib::RefPtr<Gtk::TextBuffer> text_buffer) { return write(path.string(), text_buffer); }
 
-  static boost::filesystem::path get_home_folder();
-  static boost::filesystem::path get_tmp_folder();
 };
 #endif  // JUCI_SOURCEFILE_H_

src/singletons.cc

@@ -39,24 +39,3 @@ Gtk::Label *Singleton::info() {
   return info_.get();
 }
 
-boost::filesystem::path Singleton::create_config_path(const std::string &subfolder) {
-  auto home = filesystem::get_home_folder();
-  if(home.empty()) {
-    Singleton::terminal()->print("Could not find/write to home directory. Using defaults, no settings will be saved.");
-    home = filesystem::get_tmp_folder();
-    if(home.empty()) {
-      std::string message("Please fix permissions of your home folder");
-      std::cerr << message << std::endl;
-      JFATAL(message);
-      throw new std::exception;
-    }
-  }
-  home /= subfolder;
-  return home;
-}
-
-boost::filesystem::path Singleton::config_dir() { return create_config_path({".juci", "config"}); }
-boost::filesystem::path Singleton::log_dir() { return create_config_path({".juci", "log"}); }
-boost::filesystem::path Singleton::style_dir() { return create_config_path({".juci", "styles"}); }
-std::string Singleton::config_json() { return (Singleton::config_dir()/"config.json").string(); }
-