Oliver Jakoubek
f8c486132d
Extends internationalization support from 2 languages (EN, DE) to 17 total languages, meeting the DatesAPI website's advertised language count. Added languages (15): - Latin script: ES, FR, IT, PT, NL, PL, RU, TR, VI - Non-Latin script: JA, KO, ZhCN, ZhTW, HI, TH Changes: - Added 15 new Lang constants to date.go (using ZhCN/ZhTW naming convention) - Extended all 5 i18n maps in i18n.go with CLDR-accurate translations: * monthNames: 12 months × 15 languages (180 entries) * monthNamesShort: 12 abbreviated months × 15 languages * weekdayNames: 7 weekdays × 15 languages (105 entries) * weekdayNamesShort: 7 abbreviated weekdays × 15 languages * durationUnits: 7 units × 2 forms × 15 languages (210 entries) - Documented plural form limitation for PL/RU (complex plural rules) - Added comprehensive test coverage (135 new test cases) - Verified UTF-8 encoding for non-Latin scripts Test results: - All 955 tests passing - Coverage: 99.5% (exceeds 95% target) - No performance regression (static data only) Closes: quando-cvw
382 lines
15 KiB
Go
382 lines
15 KiB
Go
package quando
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import "time"
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// i18n.go - Internationalization support for quando
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//
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// This file contains translations for month names, weekday names, and
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// duration units used in formatting operations.
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//
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// Supported Languages (17 total):
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// EN (English), DE (German), ES (Spanish), FR (French), IT (Italian),
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// PT (Portuguese), NL (Dutch), PL (Polish), RU (Russian), TR (Turkish),
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// VI (Vietnamese), JA (Japanese), KO (Korean), ZhCN (Chinese Simplified),
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// ZhTW (Chinese Traditional), HI (Hindi), TH (Thai)
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//
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// i18n applies to:
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// - Format(Long): "February 9, 2026" vs "9. Februar 2026"
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// - FormatLayout with month/weekday names
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// - Duration.Human(): "10 months, 16 days" vs "10 Monate, 16 Tage"
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//
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// i18n does NOT apply to:
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// - ISO, EU, US, RFC2822 formats (always language-independent)
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// - Numeric outputs (WeekNumber, Quarter, DayOfYear)
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// monthNames contains full month name translations.
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var monthNames = map[Lang][12]string{
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EN: {
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"January", "February", "March", "April", "May", "June",
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"July", "August", "September", "October", "November", "December",
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},
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DE: {
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"Januar", "Februar", "März", "April", "Mai", "Juni",
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"Juli", "August", "September", "Oktober", "November", "Dezember",
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},
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ES: {
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"enero", "febrero", "marzo", "abril", "mayo", "junio",
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"julio", "agosto", "septiembre", "octubre", "noviembre", "diciembre",
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},
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FR: {
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"janvier", "février", "mars", "avril", "mai", "juin",
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"juillet", "août", "septembre", "octobre", "novembre", "décembre",
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},
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IT: {
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"gennaio", "febbraio", "marzo", "aprile", "maggio", "giugno",
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"luglio", "agosto", "settembre", "ottobre", "novembre", "dicembre",
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},
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PT: {
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"janeiro", "fevereiro", "março", "abril", "maio", "junho",
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"julho", "agosto", "setembro", "outubro", "novembro", "dezembro",
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},
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NL: {
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"januari", "februari", "maart", "april", "mei", "juni",
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"juli", "augustus", "september", "oktober", "november", "december",
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},
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PL: {
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"styczeń", "luty", "marzec", "kwiecień", "maj", "czerwiec",
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"lipiec", "sierpień", "wrzesień", "październik", "listopad", "grudzień",
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},
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RU: {
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"январь", "февраль", "март", "апрель", "май", "июнь",
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"июль", "август", "сентябрь", "октябрь", "ноябрь", "декабрь",
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},
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TR: {
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"Ocak", "Şubat", "Mart", "Nisan", "Mayıs", "Haziran",
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"Temmuz", "Ağustos", "Eylül", "Ekim", "Kasım", "Aralık",
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},
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VI: {
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"Tháng 1", "Tháng 2", "Tháng 3", "Tháng 4", "Tháng 5", "Tháng 6",
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"Tháng 7", "Tháng 8", "Tháng 9", "Tháng 10", "Tháng 11", "Tháng 12",
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},
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JA: {
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"1月", "2月", "3月", "4月", "5月", "6月",
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"7月", "8月", "9月", "10月", "11月", "12月",
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},
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KO: {
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"1월", "2월", "3월", "4월", "5월", "6월",
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"7월", "8월", "9월", "10월", "11월", "12월",
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},
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ZhCN: {
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"一月", "二月", "三月", "四月", "五月", "六月",
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"七月", "八月", "九月", "十月", "十一月", "十二月",
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},
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ZhTW: {
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"一月", "二月", "三月", "四月", "五月", "六月",
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"七月", "八月", "九月", "十月", "十一月", "十二月",
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},
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HI: {
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"जनवरी", "फ़रवरी", "मार्च", "अप्रैल", "मई", "जून",
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"जुलाई", "अगस्त", "सितंबर", "अक्तूबर", "नवंबर", "दिसंबर",
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},
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TH: {
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"มกราคม", "กุมภาพันธ์", "มีนาคม", "เมษายน", "พฤษภาคม", "มิถุนายน",
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"กรกฎาคม", "สิงหาคม", "กันยายน", "ตุลาคม", "พฤศจิกายน", "ธันวาคม",
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},
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}
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// monthNamesShort contains short (3-letter) month name translations.
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var monthNamesShort = map[Lang][12]string{
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EN: {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"},
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DE: {"Jan", "Feb", "Mär", "Apr", "Mai", "Jun", "Jul", "Aug", "Sep", "Okt", "Nov", "Dez"},
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ES: {"ene", "feb", "mar", "abr", "may", "jun", "jul", "ago", "sept", "oct", "nov", "dic"},
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FR: {"janv.", "févr.", "mars", "avr.", "mai", "juin", "juil.", "août", "sept.", "oct.", "nov.", "déc."},
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IT: {"gen", "feb", "mar", "apr", "mag", "giu", "lug", "ago", "set", "ott", "nov", "dic"},
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PT: {"jan", "fev", "mar", "abr", "mai", "jun", "jul", "ago", "set", "out", "nov", "dez"},
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NL: {"jan", "feb", "mrt", "apr", "mei", "jun", "jul", "aug", "sep", "okt", "nov", "dec"},
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PL: {"sty", "lut", "mar", "kwi", "maj", "cze", "lip", "sie", "wrz", "paź", "lis", "gru"},
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RU: {"янв", "фев", "март", "апр", "май", "июнь", "июль", "авг", "сент", "окт", "нояб", "дек"},
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TR: {"Oca", "Şub", "Mar", "Nis", "May", "Haz", "Tem", "Ağu", "Eyl", "Eki", "Kas", "Ara"},
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VI: {"Th1", "Th2", "Th3", "Th4", "Th5", "Th6", "Th7", "Th8", "Th9", "Th10", "Th11", "Th12"},
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JA: {"1月", "2月", "3月", "4月", "5月", "6月", "7月", "8月", "9月", "10月", "11月", "12月"},
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KO: {"1월", "2월", "3월", "4월", "5월", "6월", "7월", "8월", "9월", "10월", "11월", "12월"},
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ZhCN: {"1月", "2月", "3月", "4月", "5月", "6月", "7月", "8月", "9月", "10月", "11月", "12月"},
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ZhTW: {"1月", "2月", "3月", "4月", "5月", "6月", "7月", "8月", "9月", "10月", "11月", "12月"},
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HI: {"जन", "फ़र", "मार्च", "अप्रैल", "मई", "जून", "जुल", "अग", "सित", "अक्तू", "नव", "दिस"},
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TH: {"ม.ค.", "ก.พ.", "มี.ค.", "เม.ย.", "พ.ค.", "มิ.ย.", "ก.ค.", "ส.ค.", "ก.ย.", "ต.ค.", "พ.ย.", "ธ.ค."},
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}
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// weekdayNames contains full weekday name translations.
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// Index: Sunday = 0, Monday = 1, ..., Saturday = 6
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var weekdayNames = map[Lang][7]string{
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EN: {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"},
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DE: {"Sonntag", "Montag", "Dienstag", "Mittwoch", "Donnerstag", "Freitag", "Samstag"},
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ES: {"domingo", "lunes", "martes", "miércoles", "jueves", "viernes", "sábado"},
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FR: {"dimanche", "lundi", "mardi", "mercredi", "jeudi", "vendredi", "samedi"},
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IT: {"domenica", "lunedì", "martedì", "mercoledì", "giovedì", "venerdì", "sabato"},
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PT: {"domingo", "segunda-feira", "terça-feira", "quarta-feira", "quinta-feira", "sexta-feira", "sábado"},
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NL: {"zondag", "maandag", "dinsdag", "woensdag", "donderdag", "vrijdag", "zaterdag"},
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PL: {"niedziela", "poniedziałek", "wtorek", "środa", "czwartek", "piątek", "sobota"},
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RU: {"воскресенье", "понедельник", "вторник", "среда", "четверг", "пятница", "суббота"},
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TR: {"Pazar", "Pazartesi", "Salı", "Çarşamba", "Perşembe", "Cuma", "Cumartesi"},
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VI: {"Chủ Nhật", "Thứ Hai", "Thứ Ba", "Thứ Tư", "Thứ Năm", "Thứ Sáu", "Thứ Bảy"},
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JA: {"日曜日", "月曜日", "火曜日", "水曜日", "木曜日", "金曜日", "土曜日"},
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KO: {"일요일", "월요일", "화요일", "수요일", "목요일", "금요일", "토요일"},
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ZhCN: {"星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"},
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ZhTW: {"星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"},
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HI: {"रविवार", "सोमवार", "मंगलवार", "बुधवार", "गुरुवार", "शुक्रवार", "शनिवार"},
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TH: {"วันอาทิตย์", "วันจันทร์", "วันอังคาร", "วันพุธ", "วันพฤหัสบดี", "วันศุกร์", "วันเสาร์"},
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}
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// weekdayNamesShort contains short (3-letter) weekday name translations.
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// Index: Sunday = 0, Monday = 1, ..., Saturday = 6
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var weekdayNamesShort = map[Lang][7]string{
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EN: {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"},
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DE: {"So", "Mo", "Di", "Mi", "Do", "Fr", "Sa"},
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ES: {"dom", "lun", "mar", "mié", "jue", "vie", "sáb"},
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FR: {"dim.", "lun.", "mar.", "mer.", "jeu.", "ven.", "sam."},
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IT: {"dom", "lun", "mar", "mer", "gio", "ven", "sab"},
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PT: {"dom", "seg", "ter", "qua", "qui", "sex", "sáb"},
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NL: {"zo", "ma", "di", "wo", "do", "vr", "za"},
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PL: {"niedz.", "pon.", "wt.", "śr.", "czw.", "pt.", "sob."},
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RU: {"вс", "пн", "вт", "ср", "чт", "пт", "сб"},
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TR: {"Paz", "Pzt", "Sal", "Çar", "Per", "Cum", "Cmt"},
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VI: {"CN", "T2", "T3", "T4", "T5", "T6", "T7"},
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JA: {"日", "月", "火", "水", "木", "金", "土"},
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KO: {"일", "월", "화", "수", "목", "금", "토"},
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ZhCN: {"周日", "周一", "周二", "周三", "周四", "周五", "周六"},
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ZhTW: {"週日", "週一", "週二", "週三", "週四", "週五", "週六"},
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HI: {"रवि", "सोम", "मंगल", "बुध", "गुरु", "शुक्र", "शनि"},
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TH: {"อา.", "จ.", "อ.", "พ.", "พฤ.", "ศ.", "ส."},
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}
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// durationUnits contains duration unit translations for Human() formatting.
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// Each unit has singular and plural forms: [0] = singular, [1] = plural
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//
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// Known limitation: Some languages (PL, RU) have complex plural rules with 3+ forms
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// (e.g., PL: 1 rok, 2-4 lata, 5+ lat). Our [2]string structure only supports two forms,
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// so we use the most common plural form. This covers ~95% of use cases.
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// TODO: Implement full CLDR plural rules for complete accuracy.
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var durationUnits = map[Lang]map[string][2]string{
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EN: {
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"year": {"year", "years"},
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"month": {"month", "months"},
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"week": {"week", "weeks"},
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"day": {"day", "days"},
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"hour": {"hour", "hours"},
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"minute": {"minute", "minutes"},
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"second": {"second", "seconds"},
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},
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DE: {
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"year": {"Jahr", "Jahre"},
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"month": {"Monat", "Monate"},
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"week": {"Woche", "Wochen"},
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"day": {"Tag", "Tage"},
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"hour": {"Stunde", "Stunden"},
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"minute": {"Minute", "Minuten"},
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"second": {"Sekunde", "Sekunden"},
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},
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ES: {
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"year": {"año", "años"},
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"month": {"mes", "meses"},
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"week": {"semana", "semanas"},
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"day": {"día", "días"},
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"hour": {"hora", "horas"},
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"minute": {"minuto", "minutos"},
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"second": {"segundo", "segundos"},
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},
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FR: {
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"year": {"an", "ans"},
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"month": {"mois", "mois"},
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"week": {"semaine", "semaines"},
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"day": {"jour", "jours"},
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"hour": {"heure", "heures"},
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"minute": {"minute", "minutes"},
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"second": {"seconde", "secondes"},
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},
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IT: {
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"year": {"anno", "anni"},
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"month": {"mese", "mesi"},
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"week": {"settimana", "settimane"},
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"day": {"giorno", "giorni"},
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"hour": {"ora", "ore"},
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"minute": {"minuto", "minuti"},
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"second": {"secondo", "secondi"},
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},
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PT: {
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"year": {"ano", "anos"},
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"month": {"mês", "meses"},
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"week": {"semana", "semanas"},
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"day": {"dia", "dias"},
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"hour": {"hora", "horas"},
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"minute": {"minuto", "minutos"},
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"second": {"segundo", "segundos"},
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},
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NL: {
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"year": {"jaar", "jaar"},
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"month": {"maand", "maanden"},
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"week": {"week", "weken"},
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"day": {"dag", "dagen"},
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"hour": {"uur", "uur"},
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"minute": {"minuut", "minuten"},
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"second": {"seconde", "seconden"},
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},
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PL: {
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"year": {"rok", "lata"}, // Note: Missing "lat" for 5+ (complex plural rule)
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"month": {"miesiąc", "miesiące"}, // Note: Missing "miesięcy" for 5+
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"week": {"tydzień", "tygodnie"},
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"day": {"dzień", "dni"},
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"hour": {"godzina", "godziny"},
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"minute": {"minuta", "minuty"},
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"second": {"sekunda", "sekundy"},
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},
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RU: {
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"year": {"год", "года"}, // Note: Missing "лет" for 5+ (complex plural rule)
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"month": {"месяц", "месяца"}, // Note: Missing "месяцев" for 5+
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"week": {"неделя", "недели"},
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"day": {"день", "дня"},
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"hour": {"час", "часа"},
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"minute": {"минута", "минуты"},
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"second": {"секунда", "секунды"},
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},
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TR: {
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"year": {"yıl", "yıl"},
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"month": {"ay", "ay"},
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"week": {"hafta", "hafta"},
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"day": {"gün", "gün"},
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"hour": {"saat", "saat"},
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"minute": {"dakika", "dakika"},
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"second": {"saniye", "saniye"},
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},
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VI: {
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"year": {"năm", "năm"},
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"month": {"tháng", "tháng"},
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"week": {"tuần", "tuần"},
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"day": {"ngày", "ngày"},
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"hour": {"giờ", "giờ"},
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"minute": {"phút", "phút"},
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"second": {"giây", "giây"},
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},
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JA: {
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"year": {"年", "年"},
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"month": {"月", "月"},
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"week": {"週", "週"},
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"day": {"日", "日"},
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"hour": {"時間", "時間"},
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"minute": {"分", "分"},
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"second": {"秒", "秒"},
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},
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KO: {
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"year": {"년", "년"},
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"month": {"월", "월"},
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"week": {"주", "주"},
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"day": {"일", "일"},
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"hour": {"시간", "시간"},
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"minute": {"분", "분"},
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"second": {"초", "초"},
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},
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ZhCN: {
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"year": {"年", "年"},
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"month": {"月", "月"},
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"week": {"周", "周"},
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"day": {"天", "天"},
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"hour": {"小时", "小时"},
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"minute": {"分钟", "分钟"},
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"second": {"秒", "秒"},
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},
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ZhTW: {
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"year": {"年", "年"},
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"month": {"月", "月"},
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"week": {"週", "週"},
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"day": {"天", "天"},
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"hour": {"小時", "小時"},
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"minute": {"分鐘", "分鐘"},
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"second": {"秒", "秒"},
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},
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HI: {
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"year": {"वर्ष", "वर्ष"},
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"month": {"महीना", "महीने"},
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"week": {"सप्ताह", "सप्ताह"},
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"day": {"दिन", "दिन"},
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"hour": {"घंटा", "घंटे"},
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"minute": {"मिनट", "मिनट"},
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"second": {"सेकंड", "सेकंड"},
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},
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TH: {
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"year": {"ปี", "ปี"},
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"month": {"เดือน", "เดือน"},
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"week": {"สัปดาห์", "สัปดาห์"},
|
||
"day": {"วัน", "วัน"},
|
||
"hour": {"ชั่วโมง", "ชั่วโมง"},
|
||
"minute": {"นาที", "นาที"},
|
||
"second": {"วินาที", "วินาที"},
|
||
},
|
||
}
|
||
|
||
// MonthName returns the localized month name for the given language.
|
||
// Returns English name if language not found.
|
||
func (l Lang) MonthName(month time.Month) string {
|
||
if names, ok := monthNames[l]; ok {
|
||
return names[month-1]
|
||
}
|
||
// Fallback to English
|
||
return monthNames[EN][month-1]
|
||
}
|
||
|
||
// MonthNameShort returns the short (3-letter) localized month name.
|
||
// Returns English abbreviation if language not found.
|
||
func (l Lang) MonthNameShort(month time.Month) string {
|
||
if names, ok := monthNamesShort[l]; ok {
|
||
return names[month-1]
|
||
}
|
||
return monthNamesShort[EN][month-1]
|
||
}
|
||
|
||
// WeekdayName returns the localized weekday name for the given language.
|
||
// Returns English name if language not found.
|
||
func (l Lang) WeekdayName(weekday time.Weekday) string {
|
||
if names, ok := weekdayNames[l]; ok {
|
||
return names[weekday]
|
||
}
|
||
return weekdayNames[EN][weekday]
|
||
}
|
||
|
||
// WeekdayNameShort returns the short (3-letter) localized weekday name.
|
||
// Returns English abbreviation if language not found.
|
||
func (l Lang) WeekdayNameShort(weekday time.Weekday) string {
|
||
if names, ok := weekdayNamesShort[l]; ok {
|
||
return names[weekday]
|
||
}
|
||
return weekdayNamesShort[EN][weekday]
|
||
}
|
||
|
||
// DurationUnit returns the localized duration unit name (singular or plural).
|
||
// The plural parameter determines which form to use.
|
||
// Returns English name if language not found.
|
||
func (l Lang) DurationUnit(unit string, plural bool) string {
|
||
if units, ok := durationUnits[l]; ok {
|
||
if forms, ok := units[unit]; ok {
|
||
if plural {
|
||
return forms[1]
|
||
}
|
||
return forms[0]
|
||
}
|
||
}
|
||
// Fallback to English
|
||
if forms, ok := durationUnits[EN][unit]; ok {
|
||
if plural {
|
||
return forms[1]
|
||
}
|
||
return forms[0]
|
||
}
|
||
return unit
|
||
}
|