Add Welsh translation

lib/lang/cy.js

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+"use strict";
+
+module.exports = {
+  "clear": "clir",
+  "no-precipitation": "dim gwlybaniaeth",
+  "mixed-precipitation": "gwlybaniaeth cymysg",
+  "possible-very-light-precipitation": "gwlybaniaeth ysgafn yn bosib",
+  "very-light-precipitation": "gwlybaniaeth ysgafn",
+  "possible-light-precipitation": "gwlybaniaeth ysgafn yn bosib",
+  "light-precipitation": "gwlybaniaeth ysgafn",
+  "medium-precipitation": "gwlybaniaeth",
+  "heavy-precipitation": "gwlybaniaeth trwm",
+  "possible-very-light-rain": "glaw mân yn bosib",
+  "very-light-rain": "glaw mân",
+  "possible-light-rain": "glaw ysgafn yn bosib",
+  "light-rain": "glaw ysgafn",
+  "medium-rain": "glaw",
+  "heavy-rain": "glaw trwm",
+  "possible-very-light-sleet": "eirlaw ysgafn yn bosib",
+  "very-light-sleet": "eirlaw ysgafn",
+  "possible-light-sleet": "eirlaw ysgafn yn bosib",
+  "light-sleet": "eirlaw ysgafn",
+  "medium-sleet": "eirlaw",
+  "heavy-sleet": "eirlaw trwm",
+  "possible-very-light-snow": "eira ysgafn yn bosib",
+  "very-light-snow": "eira ysgafn",
+  "possible-light-snow": "eira ysgafn yn bosib",
+  "light-snow": "eira ysgafn",
+  "medium-snow": "eira",
+  "heavy-snow": "eira trwm",
+  "possible-thunderstorm": "mellt a tharannau yn bosib",
+  "thunderstorm": "mellt a tharannau",
+  "light-wind": "gwyntoedd ysgafn",
+  "medium-wind": "gwyntog",
+  "heavy-wind": "gwyntoedd cryfion",
+  "low-humidity": "sych",
+  "high-humidity": "clòs",
+  "fog": "niwlog",
+  "light-clouds": "rhannol gymylog",
+  "medium-clouds": "cymylog",
+  "heavy-clouds": "cymylau trwchus",
+  "today-morning": "y bore yma",
+  "later-today-morning": "yn hwyrach bore yma",
+  "today-afternoon": "y prynhawn yma",
+  "later-today-afternoon": "yn hwyrach prynhawn yma",
+  "today-evening": "fin nos heno",
+  "later-today-evening": "yn hwyrach fin nos heno",
+  "today-night": "heno",
+  "later-today-night": "yn hwyrach heno",
+  "tomorrow-morning": "bore yfory",
+  "tomorrow-afternoon": "prynhawn yfory",
+  "tomorrow-evening": "fin nos yfory",
+  "tomorrow-night": "nos yfory",
+  "morning": "yn y bore",
+  "afternoon": "yn y prynhawn",
+  "evening": "fin nos",
+  "night": "dros nos",
+  "today": "heddiw",
+  "tomorrow": "yfory",
+  "sunday": "ar ddydd Sul",
+  "monday": "ar ddydd Llun",
+  "tuesday": "ar ddydd Mawrth",
+  "wednesday": "ar ddydd Mercher",
+  "thursday": "ar ddydd Iau",
+  "friday": "ar ddydd Gwener",
+  "saturday": "ar ddydd Sadwrn",
+  "next-sunday": "ddydd Sul nesaf",
+  "next-monday": "ddydd Llun nesaf",
+  "next-tuesday": "ddydd Mawrth nesaf",
+  "next-wednesday": "ddydd Mercher nesaf",
+  "next-thursday": "ddydd Iau nesaf",
+  "next-friday": "ddydd Gwener nesaf",
+  "next-saturday": "ddydd Sadwrn nesaf",
+  "minutes": function(a) {
+    // 1 funud, 2 funud, X munud
+    return a + (a === 1 || a === 2 ? " funud" : " munud");
+  },
+  "fahrenheit": "$1\u00B0F",
+  "celsius": "$1\u00B0C",
+  "inches": "$1 modfedd",
+  "centimeters": "$1cm",
+  "less-than": function(a) {
+    // llai nag 1, llai na 2, …
+    return "llai na" + (/^(1|8|11|16)[\D\b]/.test(a) ? "g " : " ") + a;
+  },
+  "and": function(a, b) {
+    // don't repeat 'ar'
+    if (a.slice(0,9) === "ar ddydd " && b.slice(0,9) === "ar ddydd ") b = b.slice(4);
+    return a
+      // include comma if a list
+      + (a.indexOf(",") !== -1 ? "," : "")
+      // ac not a if second phrase starts with vowel
+      + (/^[aeiouwy]/.test(b) ? " ac " : " a ")
+      // p, t, c -> ph, th, ch mutation
+      + b.replace(/^([ptc])(?!h)/,"$1h");
+  },
+  "through": function(a, b) {
+    return "o " + strip_prefix(a) + " hyd at " + strip_prefix(b);
+  },
+  "with": "$1, gyda\u2019r $2",
+  "range": "$1\u2013$2",
+  "parenthetical": "$1 ($2)",
+  "for-hour": "$1 am yr awr",
+  "starting-in": "$1 yn cychwyn mewn $2",
+  "stopping-in": "$1 yn dod i ben mewn $2",
+  "starting-then-stopping-later": "$1 yn cychwyn mewn $2, ac yn dod i ben $3 wedyn",
+  "stopping-then-starting-later": "$1 yn dod i ben mewn $2, gan gychwyn eto $3 wedyn",
+  "for-day": "$1 drwy\u2019r dydd",
+  "starting": "$1 yn cychwyn $2", // o?
+  "until": function(condition, period) {
+    return condition + " hyd at " + strip_prefix(period); // TR
+  },
+  "until-starting-again": function(condition, a, b) {
+    return condition + " hyd at " + strip_prefix(a) + ", gan gychwyn eto " + b;
+  },
+  "starting-continuing-until": function(condition, a, b) {
+    return condition + " yn cychwyn " + a + ", gan barhau hyd at " + strip_prefix(b);
+  },
+  "during": "$1 $2",
+  "for-week": "$1 drwy’r wythnos",
+  "over-weekend": "$1 dros y penwythnos",
+  "temperatures-peaking": "tymheredd ar ei uchaf yn $1 $2",
+  "temperatures-rising": "tymheredd yn codi i $1 $2",
+  "temperatures-valleying": "tymheredd ar ei isaf yn $1 $2",
+  "temperatures-falling": "tymheredd yn gostwng i $1 $2",
+  // Capitalize the first word.
+  "title": function(str) {
+    return str.charAt(0).toUpperCase() + str.slice(1);
+  },
+  // Capitalize the first word of the sentence and end with a period.
+  "sentence": function(str) {
+    // Capitalize.
+    str = str.charAt(0).toUpperCase() + str.slice(1);
+    // Add a period if there isn't already one.
+    if (str.charAt(str.length - 1) !== ".")
+      str += ".";
+    return str;
+  },
+};
+
+// strip prefixes (dros/yn/ar)
+function strip_prefix(a) {
+  return a === "dros nos" ? "y nos" : a.replace(/^(?:yn|ar) /, "");
+}

test_cases/cy.json

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+{
+	"Clir":
+    ["title", "clear"],
+
+	"Gwlybaniaeth ysgafn yn bosib":
+    ["title", "possible-very-light-precipitation"],
+
+	"Sych a gwyntoedd ysgafn":
+    ["title", ["and", "low-humidity", "light-wind"]],
+
+	"Glaw mân a gwyntoedd cryfion":
+    ["title", ["and", "very-light-rain", "heavy-wind"]],
+
+	"Clòs a chymylog":
+    ["title", ["and", "high-humidity", "medium-clouds"]],
+
+	"Clir am yr awr.":
+    ["sentence", ["for-hour", "clear"]],
+
+	"Eira ysgafn yn cychwyn mewn 35 munud.":
+    ["sentence", ["starting-in", "very-light-snow", ["minutes", 35]]],
+
+	"Glaw ysgafn yn dod i ben mewn 15 munud.":
+    ["sentence", ["stopping-in", "light-rain", ["minutes", 15]]],
+
+	"Eirlaw trwm yn cychwyn mewn 20 munud, ac yn dod i ben 30 munud wedyn.":
+    ["sentence",
+      ["starting-then-stopping-later",
+        "heavy-sleet",
+        ["minutes", 20],
+        ["minutes", 30]]],
+
+	"Glaw yn dod i ben mewn 25 munud, gan gychwyn eto 8 munud wedyn.":
+    ["sentence",
+      ["stopping-then-starting-later",
+        "medium-rain",
+        ["minutes", 25],
+        ["minutes", 8]]],
+
+	"Cymylog drwy’r dydd.":
+    ["sentence", ["for-day", "medium-clouds"]],
+
+	"Eirlaw ysgafn yn cychwyn yn y bore.":
+    ["sentence", ["starting", "very-light-sleet", "morning"]],
+
+	"Gwyntog hyd at heno.":
+    ["sentence", ["until", "medium-wind", "today-night"]],
+
+	"Gwlybaniaeth trwm hyd at y prynhawn.":
+    ["sentence", ["until", "heavy-precipitation", "afternoon"]],
+
+	"Gwyntoedd ysgafn yn y prynhawn.":
+    ["sentence", ["during", "light-wind", "afternoon"]],
+
+	"Eira yn hwyrach fin nos heno a bore yfory.":
+    ["sentence", ["during",
+      "medium-snow",
+      ["and", "later-today-evening", "tomorrow-morning"]]],
+
+	"Glaw trwm hyd at hwyrach bore yma, gan gychwyn eto fin nos heno.":
+    ["sentence", ["until-starting-again",
+      "heavy-rain",
+      "later-today-morning",
+      "today-evening"]],
+
+	"Cymylau trwchus yn cychwyn fin nos, gan barhau hyd at y nos.":
+    ["sentence", ["starting-continuing-until",
+      "heavy-clouds",
+      "evening",
+      "night"]],
+
+	"Eirlaw ysgafn yn hwyrach prynhawn yma a niwlog bore yfory.":
+    ["sentence", ["and",
+      ["during", "light-sleet", "later-today-afternoon"],
+      ["during", "fog", "tomorrow-morning"]]],
+
+	"Gwyntoedd cryfion yn cychwyn y bore yma, gan barhau hyd at y prynhawn yma, ac eirlaw bore yfory.":
+    ["sentence", ["and",
+      ["starting-continuing-until",
+        "heavy-wind",
+        "today-morning",
+        "today-afternoon"],
+      ["during", "medium-sleet", "tomorrow-morning"]]],
+
+	"Cymylau trwchus yn cychwyn yn hwyrach heno ac eira trwm prynhawn yfory.":
+    ["sentence", ["and",
+      ["starting", "heavy-clouds", "later-today-night"],
+      ["during", "heavy-snow", "tomorrow-afternoon"]]],
+
+	"Sych heno a gwlybaniaeth ysgafn yn cychwyn fin nos yfory, gan barhau hyd at nos yfory.":
+    ["sentence", ["and",
+      ["during", "low-humidity", "today-night"],
+      ["starting-continuing-until",
+        "light-precipitation",
+        "tomorrow-evening",
+        "tomorrow-night"]]],
+
+	"Eira (5 modfedd) dros nos.":
+    ["sentence", ["during",
+      ["parenthetical", "medium-snow", ["inches", 5]],
+      "night"]],
+
+	"Eira ysgafn (2cm) yn hwyrach bore yma.":
+    ["sentence", ["during",
+      ["parenthetical", "light-snow", ["centimeters", 2]],
+      "later-today-morning"]],
+
+	"Eira trwm (8–12 modfedd) drwy’r dydd.":
+    ["sentence", ["for-day",
+      ["parenthetical", "heavy-snow", ["inches", ["range", 8, 12]]]]],
+
+	"Eira (llai nag 11cm) yn y prynhawn.":
+    ["sentence", ["during",
+      ["parenthetical", "medium-snow", ["less-than", ["centimeters", 11]]],
+      "afternoon"]],
+
+	"Dim gwlybaniaeth drwy’r wythnos, gyda’r tymheredd ar ei uchaf yn 85°F yfory.":
+    ["sentence", ["with",
+      ["for-week", "no-precipitation"],
+      ["temperatures-peaking",
+        ["fahrenheit", 85],
+        "tomorrow"]]],
+
+	"Gwlybaniaeth cymysg dros y penwythnos, gyda’r tymheredd yn codi i 32°C ar ddydd Iau.":
+    ["sentence", ["with",
+      ["over-weekend", "mixed-precipitation"],
+      ["temperatures-rising",
+        ["celsius", 32],
+        "thursday"]]],
+
+	"Glaw mân ar ddydd Llun, gyda’r tymheredd ar ei isaf yn 15°F ar ddydd Gwener.":
+    ["sentence", ["with",
+      ["during", "very-light-rain", "monday"],
+      ["temperatures-valleying",
+        ["fahrenheit", 15],
+        "friday"]]],
+
+	"Eira ysgafn ar ddydd Mawrth a dydd Mercher, gyda’r tymheredd yn gostwng i 0°C ar ddydd Sul.":
+    ["sentence", ["with",
+      ["during", "light-snow", ["and", "tuesday", "wednesday"]],
+      ["temperatures-falling",
+        ["celsius", 0],
+        "sunday"]]],
+
+	"Gwlybaniaeth o heddiw hyd at ddydd Sadwrn, gyda’r tymheredd ar ei uchaf yn 100°F ar ddydd Llun.":
+    ["sentence", ["with",
+      ["during",
+        "medium-precipitation",
+        ["through", "today", "saturday"]],
+      ["temperatures-peaking",
+        ["fahrenheit", 100],
+        "monday"]]],
+
+	"Gwlybaniaeth o ddydd Gwener hyd at ddydd Sadwrn, gyda’r tymheredd ar ei uchaf yn 100°F ar ddydd Llun.":
+    ["sentence", ["with",
+      ["during",
+        "medium-precipitation",
+        ["through", "friday", "saturday"]],
+      ["temperatures-peaking",
+        ["fahrenheit", 100],
+        "monday"]]]
+}