Initial project import

tools/v/vlib/veb/tr.v

@@ -0,0 +1,84 @@
+// Copyright (c) 2019-2024 Alexander Medvednikov. All rights reserved.
+// Use of this source code is governed by an MIT license
+// that can be found in the LICENSE file.
+module veb
+
+import os
+
+const tr_map = load_tr_map()
+
+pub fn raw(s string) RawHtml {
+	return RawHtml(s)
+}
+
+// This function is run once, on app startup. Setting the `tr_map` const.
+// m['en']['house'] == 'House'
+fn load_tr_map() map[string]map[string]string {
+	// Find all translation files to figure out how many languages we have and to load the translation map
+	files := os.walk_ext('translations', '.tr')
+	mut res := map[string]map[string]string{}
+	for tr_path in files {
+		lang := fetch_lang_from_tr_path(tr_path)
+		text := os.read_file(tr_path) or {
+			eprintln('translation file "${tr_path}" failed to laod')
+			return {}
+		}
+		x := text.split('-----\n')
+		for s in x {
+			nl_pos := s.index('\n') or { continue }
+			key := s[..nl_pos]
+			val := s[nl_pos + 1..]
+			res[lang][key] = val
+		}
+	}
+	return res
+}
+
+fn fetch_lang_from_tr_path(path string) string {
+	return path.find_between(os.path_separator, '.')
+}
+
+// Used by %key in templates
+pub fn tr(lang string, key string) string {
+	res := tr_map[lang][key]
+	if res == '' {
+		eprintln('NO TRANSLATION FOR KEY "${key}"')
+		return key
+	}
+	return RawHtml(res)
+}
+
+pub fn tr_plural(lang string, key string, amount int) string {
+	s := tr_map[lang][key]
+	if s == '' {
+		eprintln('NO TRANSLATION FOR KEY "${key}"')
+		return key
+	}
+	if s.contains('|') {
+		//-----
+		// goods
+		// товар|а|ов
+		vals := s.split('|')
+		if vals.len != 3 {
+			return s
+		}
+		amount_str := amount.str()
+		// 1, 21, 121 товар
+		ending := if amount % 10 == 1 && !amount_str.ends_with('11') { // vals[0]
+			''
+			// 2, 3, 4, 22 товара
+		} else if amount % 10 == 2 && !amount_str.ends_with('12') {
+			vals[1]
+		} else if amount % 10 == 3 && !amount_str.ends_with('13') {
+			vals[1]
+		} else if amount % 10 == 4 && !amount_str.ends_with('14') {
+			vals[1]
+		} else {
+			// 5 товаров, 11 товаров etc
+			vals[2]
+		}
+		return vals[0] + ending
+	} else {
+		return s
+	}
+}