[mod] reduce memory footprint by not calling babel.Locale.parse at runtime

babel.Locale.parse loads more than 60MB in RAM.  The only purpose is to get:

    LOCALE_NAMES   - searx.data.LOCALES["LOCALE_NAMES"]
    RTL_LOCALES    - searx.data.LOCALES["RTL_LOCALES"]

This commit calls babel.Locale.parse when the translations are update from
weblate and stored in::

    searx/data/locales.json

This file can be build by::

    ./manage data.locales

By store these variables in searx.data when the translations are updated we save
round about 65MB (usually 4 worker = 260MB of RAM saved.

Suggested-by: https://github.com/searxng/searxng/discussions/2633#discussioncomment-8490494
Co-authored-by: Markus Heiser <markus.heiser@darmarit.de>

2 files changed, 71 insertions, 0 deletions

diff --git a/searx/data/__init__.py b/searx/data/__init__.py
index 0822f4ac8..c79d1042f 100644
--- a/searx/data/__init__.py
+++ b/searx/data/__init__.py
@@ -15,6 +15,7 @@ __all__ = [
     'EXTERNAL_BANGS',
     'OSM_KEYS_TAGS',
     'ENGINE_DESCRIPTIONS',
+    'LOCALES',
     'ahmia_blacklist_loader',
 ]
 
@@ -50,3 +51,4 @@ EXTERNAL_BANGS = _load('external_bangs.json')
 OSM_KEYS_TAGS = _load('osm_keys_tags.json')
 ENGINE_DESCRIPTIONS = _load('engine_descriptions.json')
 ENGINE_TRAITS = _load('engine_traits.json')
+LOCALES = _load('locales.json')
diff --git a/searx/data/locales.json b/searx/data/locales.json
new file mode 100644
index 000000000..cb45b1601
--- /dev/null
+++ b/searx/data/locales.json
@@ -0,0 +1,69 @@
+{
+  "LOCALE_NAMES": {
+    "af": "Afrikaans",
+    "ar": "العربية (Arabic)",
+    "bg": "Български (Bulgarian)",
+    "bn": "বাংলা (Bangla)",
+    "bo": "བོད་སྐད་ (Tibetan)",
+    "ca": "Català (Catalan)",
+    "cs": "Čeština (Czech)",
+    "cy": "Cymraeg (Welsh)",
+    "da": "Dansk (Danish)",
+    "de": "Deutsch (German)",
+    "dv": "ދިވެހި (Dhivehi)",
+    "el-GR": "Ελληνικά, Ελλάδα (Greek, Greece)",
+    "en": "English",
+    "eo": "Esperanto",
+    "es": "Español (Spanish)",
+    "et": "Eesti (Estonian)",
+    "eu": "Euskara (Basque)",
+    "fa-IR": "فارسی, ایران (Persian, Iran)",
+    "fi": "Suomi (Finnish)",
+    "fil": "Filipino",
+    "fr": "Français (French)",
+    "gl": "Galego (Galician)",
+    "he": "עברית (Hebrew)",
+    "hr": "Hrvatski (Croatian)",
+    "hu": "Magyar (Hungarian)",
+    "ia": "Interlingua",
+    "id": "Indonesia (Indonesian)",
+    "it": "Italiano (Italian)",
+    "ja": "日本語 (Japanese)",
+    "ko": "한국어 (Korean)",
+    "lt": "Lietuvių (Lithuanian)",
+    "lv": "Latviešu (Latvian)",
+    "ml": "മലയാളം (Malayalam)",
+    "ms": "Melayu (Malay)",
+    "nb-NO": "Norsk bokmål, Norge (Norwegian bokmål, Norway)",
+    "nl": "Nederlands (Dutch)",
+    "nl-BE": "Nederlands, België (Dutch, Belgium)",
+    "oc": "Occitan",
+    "pa": "ਪੰਜਾਬੀ (Punjabi)",
+    "pap": "Papiamento",
+    "pl": "Polski (Polish)",
+    "pt": "Português (Portuguese)",
+    "pt-BR": "Português, Brasil (Portuguese, Brazil)",
+    "ro": "Română (Romanian)",
+    "ru": "Русский (Russian)",
+    "si": "සිංහල (Sinhala)",
+    "sk": "Slovenčina (Slovak)",
+    "sl": "Slovenščina (Slovenian)",
+    "sr": "Српски (Serbian)",
+    "sv": "Svenska (Swedish)",
+    "szl": "Ślōnski (Silesian)",
+    "ta": "தமிழ் (Tamil)",
+    "te": "తెలుగు (Telugu)",
+    "th": "ไทย (Thai)",
+    "tr": "Türkçe (Turkish)",
+    "uk": "Українська (Ukrainian)",
+    "vi": "Tiếng việt (Vietnamese)",
+    "zh-HK": "中文, 中國香港特別行政區 (Chinese, Hong Kong SAR China)",
+    "zh-Hans-CN": "中文, 中国 (Chinese, China)",
+    "zh-Hant-TW": "中文, 台灣 (Chinese, Taiwan)"
+  },
+  "RTL_LOCALES": [
+    "fa-IR",
+    "ar",
+    "he"
+  ]
+}
\ No newline at end of file