Introduce /reload command

This command reloads the configuration file.

Fix https://github.com/profanity-im/profanity/issues/627

src/command/cmd_defs.c

@@ -2408,6 +2408,19 @@ static struct cmd_t command_defs[] =
         CMD_NOARGS
         CMD_NOEXAMPLES
     },
+
+    { "/reload",
+        parse_args, 0, 0, NULL,
+        CMD_NOSUBFUNCS
+        CMD_MAINFUNC(cmd_reload)
+        CMD_NOTAGS
+        CMD_SYN(
+            "/reload")
+        CMD_DESC(
+            "Reload preferences from configuration file.")
+        CMD_NOARGS
+        CMD_NOEXAMPLES
+    },
 };
 
 static GHashTable *search_index;

src/command/cmd_funcs.c

@@ -8551,3 +8551,12 @@ cmd_save(ProfWin *window, const char *const command, gchar **args)
     prefs_save();
     return TRUE;
 }
+
+gboolean
+cmd_reload(ProfWin *window, const char *const command, gchar **args)
+{
+    log_info("Reloading preferences");
+    cons_show("Reloading preferences.");
+    prefs_reload();
+    return TRUE;
+}

src/command/cmd_funcs.h

@@ -227,4 +227,5 @@ gboolean cmd_omemo_policy(ProfWin *window, const char *const command, gchar **ar
 gboolean cmd_omemo_clear_device_list(ProfWin *window, const char *const command, gchar **args);
 
 gboolean cmd_save(ProfWin *window, const char *const command, gchar **args);
+gboolean cmd_reload(ProfWin *window, const char *const command, gchar **args);
 #endif

src/config/preferences.c

@@ -78,25 +78,9 @@ static const char* _get_key(preference_t pref);
 static gboolean _get_default_boolean(preference_t pref);
 static char* _get_default_string(preference_t pref);
 
-void
+void _prefs_load(void)
-prefs_load(char *config_file)
 {
-    GError *err;
+    GError *err = NULL;
-
-    if (config_file == NULL) {
-        prefs_loc = files_get_config_path(FILE_PROFRC);
-    } else {
-        prefs_loc = config_file;
-    }
-
-    if (g_file_test(prefs_loc, G_FILE_TEST_EXISTS)) {
-        g_chmod(prefs_loc, S_IRUSR | S_IWUSR);
-    }
-
-    prefs = g_key_file_new();
-    g_key_file_load_from_file(prefs, prefs_loc, G_KEY_FILE_KEEP_COMMENTS, NULL);
-
-    err = NULL;
     log_maxsize = g_key_file_get_integer(prefs, PREF_GROUP_LOGGING, "maxsize", &err);
     if (err) {
         log_maxsize = 0;
@@ -180,6 +164,38 @@ prefs_load(char *config_file)
     g_strfreev(triggers);
 }
 
+void
+prefs_reload(void)
+{
+    g_key_file_free(prefs);
+    prefs = NULL;
+
+    prefs = g_key_file_new();
+    g_key_file_load_from_file(prefs, prefs_loc, G_KEY_FILE_KEEP_COMMENTS, NULL);
+
+    _prefs_load();
+}
+
+void
+prefs_load(char *config_file)
+{
+
+    if (config_file == NULL) {
+        prefs_loc = files_get_config_path(FILE_PROFRC);
+    } else {
+        prefs_loc = config_file;
+    }
+
+    if (g_file_test(prefs_loc, G_FILE_TEST_EXISTS)) {
+        g_chmod(prefs_loc, S_IRUSR | S_IWUSR);
+    }
+
+    prefs = g_key_file_new();
+    g_key_file_load_from_file(prefs, prefs_loc, G_KEY_FILE_KEEP_COMMENTS, NULL);
+
+    _prefs_load();
+}
+
 void
 prefs_save(void)
 {

src/config/preferences.h

@@ -169,6 +169,7 @@ typedef struct prof_winplacement_t {
 void prefs_load(char *config_file);
 void prefs_save(void);
 void prefs_close(void);
+void prefs_reload(void);
 
 char* prefs_find_login(char *prefix);
 void prefs_reset_login_search(void);