feat: Add /spellcheck list command

To list all available dictionaries.

Signed-off-by: Michael Vetter <jubalh@iodoru.org>

src/command/cmd_ac.c

@@ -568,6 +568,7 @@ cmd_ac_init(void)
 
     autocomplete_add(spellcheck_ac, "on");
     autocomplete_add(spellcheck_ac, "off");
+    autocomplete_add(spellcheck_ac, "list");
     autocomplete_add(spellcheck_ac, "lang");
 
     autocomplete_add(disco_ac, "info");

src/command/cmd_defs.c

@@ -1458,6 +1458,7 @@ static const struct cmd_t command_defs[] = {
               CMD_TAG_UI)
       CMD_SYN(
               "/spellcheck on|off",
+              "/spellcheck list",
               "/spellcheck lang <locale>")
       CMD_DESC(
               "Enable or disable spellchecking, or set the language.")

src/command/cmd_funcs.c

@@ -6571,6 +6571,24 @@ cmd_spellcheck(ProfWin* window, const char* const command, gchar** args)
     } else if (g_strcmp0(args[0], "off") == 0) {
         prefs_set_boolean(PREF_SPELLCHECK_ENABLE, FALSE);
         cons_show("Spellcheck disabled.");
+    } else if (g_strcmp0(args[0], "list") == 0) {
+        GList* langs = spellcheck_get_available_langs();
+        if (langs == NULL) {
+            cons_show("No dictionaries found. Install Enchant-compatible dictionaries (hunspell/aspell).");
+        } else {
+            GString* lang_str = g_string_new("");
+            GList* curr = langs;
+            while (curr) {
+                g_string_append(lang_str, (char*)curr->data);
+                if (curr->next) {
+                    g_string_append(lang_str, ", ");
+                }
+                curr = g_list_next(curr);
+            }
+            cons_show("Available spellcheck dictionaries: %s", lang_str->str);
+            g_string_free(lang_str, TRUE);
+            g_list_free_full(langs, g_free);
+        }
     } else if (g_strcmp0(args[0], "lang") == 0) {
         if (args[1] == NULL) {
             cons_bad_cmd_usage(command);

src/tools/spellcheck.c

@@ -93,6 +93,31 @@ spellcheck_get_lang(void)
     return current_lang;
 }
 
+static void
+_list_dicts_cb(const char* const lang_tag,
+               const char* const provider_name,
+               const char* const provider_desc,
+               const char* const provider_file,
+               void* user_data)
+{
+    GList** list = (GList**)user_data;
+    if (g_list_find_custom(*list, lang_tag, (GCompareFunc)g_strcmp0) == NULL) {
+        *list = g_list_append(*list, g_strdup(lang_tag));
+    }
+}
+
+GList*
+spellcheck_get_available_langs(void)
+{
+    if (!broker) {
+        return NULL;
+    }
+
+    GList* list = NULL;
+    enchant_broker_list_dicts(broker, _list_dicts_cb, &list);
+    return g_list_sort(list, (GCompareFunc)g_strcmp0);
+}
+
 gboolean
 spellcheck_is_misspelled(const char* word)
 {

src/tools/spellcheck.h

@@ -20,6 +20,7 @@ void spellcheck_deinit(void);
 gboolean spellcheck_is_misspelled(const char* word);
 gboolean spellcheck_set_lang(const char* lang);
 const char* spellcheck_get_lang(void);
+GList* spellcheck_get_available_langs(void);
 
 #else
 
@@ -46,6 +47,11 @@ spellcheck_get_lang(void)
 {
     return NULL;
 }
+static inline GList*
+spellcheck_get_available_langs(void)
+{
+    return NULL;
+}
 
 #endif