From 2a5db3e7ab0a601245cac66f0f7be9226e6da8bf Mon Sep 17 00:00:00 2001
From: Nikhil Tanwar <2002nikhiltanwar@gmail.com>
Date: Mon, 10 Jan 2022 23:28:07 +0530
Subject: [PATCH 1/2] Use iso6391to3.js for language tag value

Improves upon the previous method of truncating language to first 2 values which was showing wrong values
---
 static/skin/index.js | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/static/skin/index.js b/static/skin/index.js
index eb1388997..b6504dd18 100644
--- a/static/skin/index.js
+++ b/static/skin/index.js
@@ -114,12 +114,18 @@
                 ${downloadLink ? `<div class="book__download"><span data-link="${downloadLink}">Download ${humanFriendlyZimSize ? ` - ${humanFriendlyZimSize}</span></div>`: ''}` : ''}
             </div>
             <div class="book__description" title="${description}">${description}</div>
-            <div class="book__languageTag" ${languageAttr}>${language.substr(0, 2).toUpperCase()}</div>
+            <div class="book__languageTag" ${languageAttr}>${getLanguageCodeToDisplay(language)}</div>
             <div class="book__tags"><div class="book__tags--wrapper">${tagHtml}</div></div>
             </div></div></a>`;
         return divTag;
     }
 
+    function getLanguageCodeToDisplay(langCode3Letter) {
+        const langCode2Letter = (Object.keys(iso6391To3).find(key => iso6391To3[key] === langCode3Letter));
+        const res = (langCode2Letter != undefined) ? langCode2Letter : langCode3Letter;
+        return res.toUpperCase();
+    }
+
     function toggleFooter(show=false) {
         if (show) {
             footer.style.display = 'block';

From 0633f68f801e45c59190b80cbd99411656594476 Mon Sep 17 00:00:00 2001
From: Nikhil Tanwar <2002nikhiltanwar@gmail.com>
Date: Tue, 11 Jan 2022 00:35:04 +0530
Subject: [PATCH 2/2] Add new values from wikipedia

Added new values. This now covers all iso 639-1 codes from https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes
---
 static/skin/iso6391To3.js | 63 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)

diff --git a/static/skin/iso6391To3.js b/static/skin/iso6391To3.js
index 540f3eb8d..f1e3b7594 100644
--- a/static/skin/iso6391To3.js
+++ b/static/skin/iso6391To3.js
@@ -1,15 +1,22 @@
+// Source: https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes
 // eslint-disable-next-line no-unused-vars
 const iso6391To3 = {
     "aa": "aar",
+    "ab": "abk",
+    "ae": "ave",
     "af": "afr",
     "ak": "aka",
     "am": "amh",
+    "an": "arg",
     "ar": "ara",
     "as": "asm",
+    "av": "ava",
+    "ay": "aym",
     "az": "aze",
     "ba": "bak",
     "be": "bel",
     "bg": "bul",
+    "bi": "bis",
     "bm": "bam",
     "bn": "ben",
     "bo": "bod",
@@ -17,24 +24,33 @@ const iso6391To3 = {
     "bs": "bos",
     "ca": "cat",
     "ce": "che",
+    "ch": "cha",
     "co": "cos",
+    "cr": "cre",
     "cs": "ces",
+    "cu": "chu",
     "cv": "chv",
     "cy": "cym",
     "da": "dan",
     "de": "deu",
+    "dv": "div",
     "dz": "dzo",
+    "el": "ell",
     "ee": "ewe",
     "en": "eng",
+    "eo": "epo",
     "es": "spa",
     "et": "est",
     "eu": "eus",
     "fa": "fas",
     "ff": "ful",
     "fi": "fin",
+    "fj": "fij",
     "fo": "fao",
     "fr": "fra",
+    "fy": "fry",
     "ga": "gle",
+    "gd": "gla",
     "gl": "glg",
     "gn": "grn",
     "gu": "guj",
@@ -42,44 +58,78 @@ const iso6391To3 = {
     "ha": "hau",
     "he": "heb",
     "hi": "hin",
+    "ho": "hmo",
     "hr": "hrv",
+    "ht": "hat",
     "hu": "hun",
     "hy": "hye",
+    "hz": "her",
+    "ia": "ina",
     "id": "ind",
+    "ie": "ile",
     "ig": "ibo",
+    "ii": "iii",
+    "ik": "ipk",
+    "io": "ido",
     "is": "isl",
     "it": "ita",
     "iu": "iku",
     "ja": "jpn",
     "jv": "jav",
     "ka": "kat",
+    "kg": "kon",
     "ki": "kik",
+    "kj": "kua",
+    "kl": "kal",
     "kk": "kaz",
     "km": "khm",
     "kn": "kan",
     "ko": "kor",
+    "kr": "kau",
     "ks": "kas",
     "ku": "kur",
+    "kv": "kom",
     "kw": "cor",
     "ky": "kir",
+    "la": "lat",
     "lb": "ltz",
     "lg": "lug",
+    "li": "lim",
     "ln": "lin",
     "lo": "lao",
     "lt": "lit",
+    "lu": "lub",
     "lv": "lav",
     "mg": "mlg",
+    "mh": "mah",
     "mi": "mri",
     "mk": "mkd",
     "ml": "mal",
     "mn": "mon",
     "mr": "mar",
+    "ms": "msa",
     "mt": "mlt",
     "my": "mya",
+    "na": "nau",
+    "nb": "nob",
+    "nd": "nde",
+    "ne": "nep",
+    "ng": "ndo",
     "nl": "nld",
+    "nn": "nno",
+    "no": "nor",
+    "nr": "nbl",
+    "nv": "nav",
     "ny": "nya",
+    "oc": "oci",
+    "oj": "oji",
     "om": "orm",
+    "or": "ori",
+    "os": "oss",
+    "pa": "pan",
+    "pi": "pli",
     "pl": "pol",
+    "ps": "pus",
     "pt": "por",
     "qu": "que",
     "rm": "roh",
@@ -88,7 +138,10 @@ const iso6391To3 = {
     "ru": "rus",
     "rw": "kin",
     "sa": "san",
+    "sc": "srd",
     "sd": "snd",
+    "se": "sme",
+    "sm": "smo",
     "sg": "sag",
     "si": "sin",
     "sk": "slk",
@@ -98,27 +151,37 @@ const iso6391To3 = {
     "sq": "sqi",
     "sr": "srp",
     "ss": "ssw",
+    "st": "sot",
+    "su": "sun",
     "sv": "swe",
+    "sw": "swa",
     "ta": "tam",
     "te": "tel",
     "tg": "tgk",
     "th": "tha",
     "ti": "tir",
     "tk": "tuk",
+    "tl": "tgl",
     "tn": "tsn",
+    "to": "ton",
     "tr": "tur",
     "ts": "tso",
     "tt": "tat",
+    "tw": "twi",
+    "ty": "tah",
     "ug": "uig",
     "uk": "ukr",
     "ur": "urd",
     "uz": "uzb",
     "ve": "ven",
     "vi": "vie",
+    "vo": "vol",
     "wa": "wln",
     "wo": "wol",
     "xh": "xho",
+    "yi": "yid",
     "yo": "yor",
+    "za": "zha",
     "zh": "zho",
     "zu": "zul"
 }
\ No newline at end of file