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<?php |
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declare(strict_types = 1); |
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namespace hexydec\agentzero; |
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class versions { |
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protected static array|false|null $versions = null; |
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96 |
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protected static function load(string $source, ?string $cache = null, ?int $life = 604800) : array|false { |
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// cache for this session |
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$data = self::$versions; |
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if ($data === null) { |
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// fetch from cache |
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1 |
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if (\file_exists($cache) && \filemtime($cache) > \time() - $life && ($json = \file_get_contents($cache)) !== false) { |
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// fetch from server |
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1 |
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} elseif (($json = \file_get_contents($source)) === false) { |
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// get stale cache |
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if ($cache !== null && ($json = \file_get_contents($cache)) !== false) { |
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self::$versions = false; |
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return false; |
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} |
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// update cache |
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} elseif ($cache !== null) { |
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// create directory |
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$dir = \dirname($cache); |
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if (!\is_dir($dir) && \mkdir($dir, 0755)) { |
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// cache file |
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\file_put_contents($cache, $json); |
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} |
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} |
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// decode JSON |
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self::$versions = $data = \json_decode($json, true); |
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} |
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return $data ?? false; |
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} |
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protected static function latest(array $versions, ?\DateTime $now = null) : ?string { |
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// no date restriction |
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if ($now === null) { |
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return \strval(\array_key_first($versions)); |
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} else { |
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$date = \intval($now->format('Ymd')); |
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foreach ($versions AS $key => $item) { |
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if ($date < $item) { |
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return \strval($key); |
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} |
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} |
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} |
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return null; |
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} |
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90 |
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protected static function released(array $data, string $version) : ?string { |
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$major = \intval($version); |
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$len = 0; |
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$i = 0; |
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$vlen = \strlen($version); |
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$released = null; |
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foreach ($data AS $ver => $date) { |
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if (\intval($ver) === $major) { |
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$ver = \strval($ver); // cast as string to get letters, string keys cast to int when array keys |
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$match = 0; |
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for ($n = 0; $n < $vlen; $n++) { |
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if ($version[$n] === ($ver[$n] ?? null)) { |
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$match++; |
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} else { |
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break; |
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} |
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} |
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if ($match > $len) { |
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$len = $match; |
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$released = $date; |
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} |
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} |
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$i++; |
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} |
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return $released !== null ? (new \DateTime(\strval($released)))->format('Y-m-d') : null; |
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} |
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public static function get(string $browser, string $version, array $config) : array { |
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if (($versions = self::load($config['source'], $config['cache'])) !== false) { |
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$data = []; |
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if (isset($versions[$browser])) { |
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// get latest version of the browser |
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$data['browserlatest'] = self::latest($versions[$browser]); |
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// check if version is greater than latest version |
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$major = \intval($version); |
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$latest = \intval($data['browserlatest']); |
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$first = \intval(\array_key_last($versions[$browser])); |
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// version is way out of bounds (This happens sometimes, for example if the safari engine version is reported instead of the browser version) |
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if ($latest + 3 < $major) { |
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return []; |
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// nightly build? |
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} elseif ($latest + 3 === $major) { |
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$data['browserstatus'] = 'nightly'; |
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// canary build |
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} elseif ($latest + 2 === $major) { |
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$data['browserstatus'] = 'canary'; |
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// beta release |
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} elseif ($latest + 1 === $major) { |
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$data['browserstatus'] = 'beta'; |
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// so old we don't have data for it |
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} elseif ($major < $first) { |
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$data['browserstatus'] = 'legacy'; |
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// find closes match for version |
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} else { |
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// get current version |
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$data['browserreleased'] = self::released($versions[$browser], $version); |
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// calculate status |
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if (isset($data['browserreleased'])) { |
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$current = \explode('.', $data['browserlatest'])[0] === \explode('.', $version)[0]; |
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$released = new \DateTime($data['browserreleased']); |
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// legacy |
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if ($released < \date_create('-5 years')) { |
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$data['browserstatus'] = 'legacy'; |
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// outdated |
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} elseif ($released < \date_create('-2 years')) { |
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$data['browserstatus'] = 'outdated'; |
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// current |
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} elseif ($current && ($released >= \date_create('-1 year') || $data['browserlatest'] === $version)) { |
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$data['browserstatus'] = 'current'; |
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// previous |
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} else { |
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$data['browserstatus'] = 'previous'; |
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} |
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} |
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} |
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} |
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return $data; |
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} |
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return []; |
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} |
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} |
hexydec /
agentzero
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