Added /theme list command

src/command.c

@@ -1223,10 +1223,19 @@ _cmd_prefs(gchar **args, struct cmd_help_t help)
 static gboolean
 _cmd_theme(gchar **args, struct cmd_help_t help)
 {
-    if (theme_load(args[0])) {
+    // list themes
+    if (strcmp(args[0], "list") == 0) {
+        GSList *themes = theme_list();
+        cons_show_themes(themes);
+        g_slist_free_full(themes, g_free);
+
+    // load a theme
+    } else if (theme_load(args[0])) {
         ui_load_colours();
         prefs_set_theme(args[0]);
         cons_show("Loaded theme: %s", args[0]);
+
+    // theme not found
     } else {
         cons_show("Couldn't find theme: %s", args[0]);
     }

src/theme.c

@@ -112,6 +112,27 @@ theme_init(const char * const theme_name)
     _load_colours();
 }
 
+GSList *
+theme_list(void)
+{
+    GSList *result = NULL;
+    gchar *themes_dir = files_get_themes_dir();
+    GDir *themes = g_dir_open(themes_dir, 0, NULL);
+    if (themes != NULL) {
+        const gchar *theme = g_dir_read_name(themes);
+        while (theme != NULL) {
+            result = g_slist_append(result, strdup(theme));
+            theme = g_dir_read_name(themes);
+        }
+
+        g_dir_close(themes);
+        return result;
+
+    } else {
+        return NULL;
+    }
+}
+
 gboolean
 theme_load(const char * const theme_name)
 {

src/theme.h

@@ -61,6 +61,7 @@
 void theme_init(const char * const theme_name);
 void theme_init_colours(void);
 gboolean theme_load(const char * const theme_name);
+GSList* theme_list(void);
 void theme_close(void);
 
 #endif

src/ui.h

@@ -154,6 +154,7 @@ void cons_show_contacts(GSList * list);
 void cons_check_version(gboolean not_available_msg);
 void cons_show_wins(void);
 void cons_show_status(const char * const contact);
+void cons_show_themes(GSList *themes);
 
 // status bar actions
 void status_bar_refresh(void);

src/windows.c

@@ -1289,6 +1289,22 @@ cons_show_connection_prefs(void)
     }
 }
 
+void
+cons_show_themes(GSList *themes)
+{
+    cons_show("");
+
+    if (themes == NULL) {
+        cons_show("No available themes.");
+    } else {
+        cons_show("Available themes:");
+        while (themes != NULL) {
+            cons_show(themes->data);
+            themes = g_slist_next(themes);
+        }
+    }
+}
+
 void
 cons_prefs(void)
 {