add wayland specifier to session names (#162)

Create a config option to force ly to add " (Wayland)" to session
names, as long as those names don't already contain the string.

res/config.ini

@@ -83,6 +83,9 @@
 # wayland setup command
 #wayland_cmd = /etc/ly/wsetup.sh
 
+# add wayland specifier to session names
+#wayland_specifier = false
+
 # wayland desktop environments
 #waylandsessions = /usr/share/wayland-sessions
 

src/config.c

@@ -184,6 +184,7 @@ void config_load(const char *cfg_path)
 		{"term_reset_cmd", &config.term_reset_cmd, config_handle_str},
 		{"tty", &config.tty, config_handle_u8},
 		{"wayland_cmd", &config.wayland_cmd, config_handle_str},
+		{"wayland_specifier", &config.wayland_specifier, config_handle_bool},
 		{"waylandsessions", &config.waylandsessions, config_handle_str},
 		{"x_cmd", &config.x_cmd, config_handle_str},
 		{"x_cmd_setup", &config.x_cmd_setup, config_handle_str},
@@ -289,6 +290,7 @@ void config_defaults()
 	config.term_reset_cmd = strdup("/usr/bin/tput reset");
 	config.tty = 2;
 	config.wayland_cmd = strdup(DATADIR "/wsetup.sh");
+	config.wayland_specifier = false;
 	config.waylandsessions = strdup("/usr/share/wayland-sessions");
 	config.x_cmd = strdup("/usr/bin/X");
 	config.x_cmd_setup = strdup(DATADIR "/xsetup.sh");

src/config.h

@@ -89,6 +89,7 @@ struct config
 	char* term_reset_cmd;
 	u8 tty;
 	char* wayland_cmd;
+	bool wayland_specifier;
 	char* waylandsessions;
 	char* x_cmd;
 	char* x_cmd_setup;

src/utils.c

@@ -95,6 +95,19 @@ void desktop_crawl(
 		strncat(path, dir_info->d_name, (sizeof (path)) - 1);
 		configator(&desktop_config, path);
 
+		// if these are wayland sessions, add " (Wayland)" to their names,
+		// as long as their names don't already contain that string
+		if (server == DS_WAYLAND && config.wayland_specifier)
+		{
+			const char wayland_specifier[] = " (Wayland)";
+			if (strstr(name, wayland_specifier) == NULL)
+			{
+				name = realloc(name, (strlen(name) + sizeof(wayland_specifier) + 1));
+				// using strcat is safe because the string is constant
+				strcat(name, wayland_specifier);
+			}
+		}
+
 		if ((name != NULL) && (exec != NULL))
 		{
 			input_desktop_add(target, name, exec, server);