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<?php |
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namespace Coyote\Services\Parser\Parsers; |
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use Collective\Html\HtmlBuilder; |
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use Coyote\Services\Parser\Parsers\Parentheses\ParenthesesParser; |
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use TRegx\CleanRegex\Pattern; |
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use TRegx\SafeRegex\preg; |
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class UrlFormatter |
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{ |
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// http://daringfireball.net/2010/07/improved_regex_for_matching_urls |
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// modified - removed part with parsing of parentheses, because that's |
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// done by ParenthesesParser |
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private const REGEXP_URL = '~\b(?:https?://|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,4}/)[^\s<>]+[^\s`!(\[\]{};:\'".,<>?«»“”‘’]~i'; |
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private const TITLE_LEN = 64; |
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/** @var string */ |
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private $host; |
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/** @var HtmlBuilder */ |
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private $html; |
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/** @var ParenthesesParser */ |
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private $parser; |
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public function __construct(string $host, HtmlBuilder $html, ParenthesesParser $parser) |
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{ |
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$this->host = $host; |
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$this->html = $html; |
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$this->parser = $parser; |
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} |
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public function parse(string $text): string |
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{ |
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return preg::replace_callback(self::REGEXP_URL, function (array $match): string { |
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return $this->processLink($match[0]); |
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}, $text); |
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} |
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private function processLink(string $url): string |
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{ |
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return join(array_map([$this, 'buildLink'], $this->parser->parse($url))); |
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} |
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private function buildLink(string $url): string |
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{ |
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if (Pattern::pcre(self::REGEXP_URL)->test($url)) { |
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return $this->html->link($this->prependSchema($url), $this->truncate($url)); |
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} |
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return $url; |
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} |
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private function prependSchema(string $url): string |
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{ |
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if (pattern('^[\w]+?://', 'i')->fails($url)) { |
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return "http://$url"; |
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} |
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return $url; |
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} |
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private function truncate(string $text): string |
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{ |
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if (mb_strlen($text) < self::TITLE_LEN) { |
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return $text; |
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} |
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if ($this->host === parse_url($text, PHP_URL_HOST)) { |
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return $text; |
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} |
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return $this->truncateToLengthWith($text, self::TITLE_LEN, '[...]'); |
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} |
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private function truncateToLengthWith(string $text, int $length, string $substitute): string |
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{ |
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$padding = ($length - mb_strlen($substitute)) / 2; |
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return mb_substr($text, 0, $padding) . $substitute . mb_substr($text, -$padding); |
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} |
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} |
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adam-boduch /
coyote
