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<?php
/**
* Generates the json files stored in resources/language.
*
* CLDR lists about 515 languages, many of them dead (like Latin or Old English).
* In order to decrease the list to a reasonable size, only the languages
* for which CLDR itself has translations are listed.
*/
set_time_limit(0);
// Downloaded from https://github.com/unicode-cldr/cldr-localenames-full.git
$localeDirectory = '../assets/cldr-localenames-full/main/';
$enLanguages = $localeDirectory . 'en/languages.json';
if (!is_dir($localeDirectory)) {
die("The $localeDirectory directory was not found");
}
if (!file_exists($enLanguages)) {
die("The $enLanguages file was not found");
}
if (!function_exists('collator_create')) {
// Reimplementing intl's collator would be a huge undertaking, so we
// use it instead to presort the generated locale specific data.
die('The intl extension was not found.');
}
// Locales listed without a "-" match all variants.
// Locales listed with a "-" match only those exact ones.
$ignoredLocales = [
// Interlingua is a made up language.
'ia',
// Valencian differs from its parent only by a single character (è/é).
'ca-ES-VALENCIA',
// Special "grouping" locales.
'root', 'en-US-POSIX', 'en-001', 'en-150', 'es-419',
];
$languages = [];
// Load the "en" data first so that it can be used as a fallback for
// untranslated language names in other locales.
$languageData = json_decode(file_get_contents($enLanguages), true);
$languageData = $languageData['main']['en']['localeDisplayNames']['languages'];
foreach ($languageData as $languageCode => $languageName) {
if (strpos($languageCode, '-alt-') === false) {
$languages['en'][$languageCode] = [
'name' => $languageName,
];
}
}
// Gather available locales.
$locales = [];
if ($handle = opendir($localeDirectory)) {
while (false !== ($entry = readdir($handle))) {
if (substr($entry, 0, 1) != '.') {
$entryParts = explode('-', $entry);
if (!in_array($entry, $ignoredLocales) && !in_array($entryParts[0], $ignoredLocales)) {
$locales[] = $entry;
}
}
}
closedir($handle);
}
// Remove all languages that aren't an available locale at the same time.
// This reduces the language list from about 515 to about 185 languages.
foreach ($languages['en'] as $languageCode => $languageData) {
if (!in_array($languageCode, $locales)) {
unset($languages['en'][$languageCode]);
}
}
// Load the localizations.
$untranslatedCounts = [];
foreach ($locales as $locale) {
$data = json_decode(file_get_contents($localeDirectory . $locale . '/languages.json'), true);
$data = $data['main'][$locale]['localeDisplayNames']['languages'];
foreach ($data as $languageCode => $languageName) {
if (isset($languages['en'][$languageCode])) {
// This language name is untranslated, use to the english version.
if ($languageCode == str_replace('_', '-', $languageName)) {
$languageName = $languages['en'][$languageCode]['name'];
// Maintain a count of untranslated languages per locale.
$untranslatedCounts += [$locale => 0];
$untranslatedCounts[$locale]++;
}
$languages[$locale][$languageCode] = [
'name' => $languageName,
];
}
}
}
// Ignore locales that are more than 80% untranslated.
foreach ($untranslatedCounts as $locale => $count) {
$totalCount = count($languages[$locale]);
$untranslatedPercentage = $count * (100 / $totalCount);
if ($untranslatedPercentage >= 80) {
unset($languages[$locale]);
}
}
// Identify localizations that are the same as the ones for the parent locale.
// For example, "fr-FR" if "fr" has the same data.
$duplicates = [];
foreach ($languages as $locale => $localizedLanguages) {
if (strpos($locale, '-') !== false) {
$localeParts = explode('-', $locale);
array_pop($localeParts);
$parentLocale = implode('-', $localeParts);
$diff = array_udiff($localizedLanguages, $languages[$parentLocale], function ($first, $second) {
return ($first['name'] == $second['name']) ? 0 : 1;
});
if (empty($diff)) {
// The duplicates are not removed right away because they might
// still be needed for other duplicate checks (for example,
// when there are locales like bs-Latn-BA, bs-Latn, bs).
$duplicates[] = $locale;
}
}
}
// Remove the duplicates.
foreach ($duplicates as $locale) {
unset($languages[$locale]);
}
// Write out the localizations.
foreach ($languages as $locale => $localizedLanguages) {
$collator = collator_create($locale);
uasort($localizedLanguages, function ($a, $b) use ($collator) {
return collator_compare($collator, $a['name'], $b['name']);
});
file_put_json($locale . '.json', $localizedLanguages);
}
/**
* Converts the provided data into json and writes it to the disk.
*/
function file_put_json($filename, $data)
{
$data = json_encode($data, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);
// Indenting with tabs instead of 4 spaces gives us 20% smaller files.
$data = str_replace(' ', "\t", $data);
file_put_contents($filename, $data);
}
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