fix(date): Use configured locale if defined

Fixes jaagr/lemonbuddy#74

include/components/bar.hpp

@@ -206,6 +206,7 @@ class bar : public xpp::event::sink<evt::button_press, evt::expose> {
     // Set misc parameters {{{
 
     m_bar.separator = string_util::trim(m_conf.get<string>(bs, "separator", ""), '"');
+    m_bar.locale = m_conf.get<string>(bs, "locale", "");
 
     // }}}
     // Checking nodraw {{{

include/components/types.hpp

@@ -16,6 +16,8 @@ enum class gc { NONE = 0, BG, FG, OL, UL, BT, BB, BL, BR };
 struct bar_settings {
   bar_settings() = default;
 
+  string locale;
+
   int16_t x{0};
   int16_t y{0};
   uint16_t width{0};

include/modules/date.hpp

@@ -10,6 +10,9 @@ namespace modules {
     using timer_module::timer_module;
 
     void setup() {
+      if (!m_bar.locale.empty())
+        setlocale(LC_TIME, m_bar.locale.c_str());
+
       m_interval = chrono::duration<double>(m_conf.get<float>(name(), "interval", 1));
 
       m_formatter->add(DEFAULT_FORMAT, TAG_DATE, {TAG_DATE});