fix: error handling

src/main.cpp

@@ -12,13 +12,29 @@
 using namespace std;
 using namespace cpptoml;
 
+const string USAGE = R"#(usage:  RapidMenu [flags] [<command> [args]]
+LISTING COMMANDS:
+    -c:           To specify which config to use.
+    -b:           Make a binary out of a config.
+)#";
+
+const string invalidvalue = R"#(Invalid value in config: )#";
+const string egc = R"#(Invalid command in config: )#";
+
+
 struct Action {
     string names;
     string description;
     string command;
 
-    Action(const string& nms = "", const string& desc = "", const string& cmd = "")
-        : names(nms), description(desc), command(cmd) {}
+    Action(
+        const string& nms = "", 
+        const string& desc = "", 
+        const string& cmd = "")
+        
+        : names(nms), 
+        description(desc), 
+        command(cmd) {}
 };
 
 void from_toml(const table& t, Action& a) {
@@ -27,26 +43,33 @@ void from_toml(const table& t, Action& a) {
         a.description = *t.get_as<string>("description");
         a.command = *t.get_as<string>("command");
     } catch (const parse_exception& e) {
-        throw invalid_argument("Error getting value from config:");
+        throw invalid_argument(invalidvalue.c_str());
     }
 }
 
 int main(int argc, char* argv[]) {
+    const char* configFile = nullptr;  // Initialize to nullptr
 
-    if (argc < 3 || argv[2][0] == '-') {
-    cerr << "Usage: -c <config_file>" << endl;
-    return 1;
+    if (argc > 1 && strcmp(argv[1], "-c") == 0) {
+        if (argc < 3 || argv[2][0] == '-') {
+            std::cerr << USAGE.c_str() << std::endl;
+            return 1;
+        }
+        
+        configFile = argv[2];
+    } else if (argc > 1 && strcmp(argv[1], "-d") == 0) {
+        std::cerr << USAGE.c_str() << std::endl;
+        return 0;  // Assuming you want to exit after printing the message
+    }else{
+        std::cerr << USAGE.c_str() << std::endl;
+        return 0;
     }
 
-    const string configFile = argv[2];
+    if (configFile) {
+    }
 
     const char* userHome = getenv("HOME");
 
-    if (userHome == nullptr) {
-        cerr << "Error: HOME environment variable not set." << endl;
-        return 1;
-    }
-
     string rapidMenuPath = string(userHome) + "/.config/RapidMenu";
 
     if (filesystem::exists(rapidMenuPath) && filesystem::is_directory(rapidMenuPath)) {
@@ -59,18 +82,16 @@ int main(int argc, char* argv[]) {
     try {
         auto config = parse_file(configFile);
 
-        // Create the Rofi command
-        setenv("LC_CTYPE", "", 1);  // Unset LC_CTYPE
+        setenv("LC_CTYPE", "", 1);
         string namesList;
 
         for (const auto& tableItem : *config) {
             try {
-                // Use the `from_toml` function to convert TOML to Action
                 Action a;
                 from_toml(*tableItem.second->as_table(), a);
                 namesList += a.names + "\n";
             } catch (const invalid_argument& e) {
-                cerr << "Error getting value from config: " << e.what() << endl;
+                cerr << invalidvalue.c_str() << e.what() << endl;
                 return 1;
             }
         }
@@ -78,41 +99,37 @@ int main(int argc, char* argv[]) {
         string rname = config->get_table("runner")->get_as<string>("rname").value_or("");
         string rtheme = config->get_table("runner")->get_as<string>("rtheme").value_or("");
         string rcommand = config->get_table("runner")->get_as<string>("rcommand").value_or("");
-        //string rofiCommand = "printf '" + namesList + "' | rofi -dmenu -p 'Dashboard: ' -show-icons -theme ~/.config/rofi/themes/rounded-purple-dark.rasi";
+
         string rofiCommand = "printf '" + namesList + "' | " + rcommand + " '" + rname + " ' " + rtheme;
-        // Open a pipe to the Rofi process
         FILE *rofiProcess = popen(rofiCommand.c_str(), "r");
 
         char buffer[256];
         string userChoice;
 
-        // Read user input from Rofi using getline
         while (fgets(buffer, sizeof(buffer), rofiProcess)) {
             userChoice += buffer;
         }
 
-        // Remove newline characters from userChoice
         userChoice.erase(remove_if(userChoice.begin(), userChoice.end(), [](char c) { return c == '\n'; }), userChoice.end());
 
         for (const auto& tableItem : *config) {
             try {
                 const auto& table = tableItem.second->as_table();
                 if (table->get_as<string>("names").value_or("") == userChoice) {
-                    // Use the `from_toml` function to convert TOML to Action
+
                     Action a;
                     from_toml(*table, a);
                     int bashResult = system(a.command.c_str());
                     cout << a.description << endl;
 
-                    // Check the return value if needed
                     if (bashResult != 0) {
-                        cerr << "Error executing command: " << a.command << endl;
+                        cerr << egc.c_str() << a.command << endl;
                     }
 
                     return 0;
                 }
             } catch (const invalid_argument& e) {
-                cerr << "Error getting value from config: " << e.what() << endl;
+                cerr << invalidvalue.c_str() << e.what() << endl;
                 return 1;
             }
         }