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<?php |
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/** |
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* This file is part of PHP-Typography. |
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* |
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* Copyright 2014-2017 Peter Putzer. |
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* Copyright 2009-2011 KINGdesk, LLC. |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License along |
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* with this program; if not, write to the Free Software Foundation, Inc., |
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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* |
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* *** |
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* |
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* @package mundschenk-at/php-typography |
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* @license http://www.gnu.org/licenses/gpl-2.0.html |
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*/ |
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namespace PHP_Typography\Fixes\Token_Fixes; |
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use PHP_Typography\Fixes\Token_Fix; |
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use PHP_Typography\Hyphenator\Cache; |
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use PHP_Typography\RE; |
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use PHP_Typography\Settings; |
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use PHP_Typography\Text_Parser; |
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use PHP_Typography\Text_Parser\Token; |
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use PHP_Typography\U; |
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/** |
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* Wraps URL parts zero-width spaces (if enabled). |
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* |
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* @author Peter Putzer <[email protected]> |
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* |
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* @since 5.0.0 |
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*/ |
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class Wrap_URLs_Fix extends Hyphenate_Fix { |
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// Valid URL schemes. |
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const URL_SCHEME = '(?:https?|ftps?|file|nfs|feed|itms|itpc)'; |
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const WRAP_URLS_DOMAIN_PARTS = '#(\-|\.)#'; |
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/** |
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* The URL matching regular expression. |
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* |
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* @var string |
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*/ |
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protected $url_pattern; |
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/** |
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* Creates a new fix instance. |
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* |
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* @param Cache|null $cache Optional. Default null. |
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* @param bool $feed_compatible Optional. Default false. |
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*/ |
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public function __construct( Cache $cache = null, $feed_compatible = false ) { |
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parent::__construct( $cache, Token_Fix::OTHER, $feed_compatible ); |
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// Combined URL pattern. |
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$this->url_pattern = '`(?: |
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\A |
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(?<schema>' . self::URL_SCHEME . ':\/\/)? # Subpattern 1: contains _http://_ if it exists |
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(?<domain> # Subpattern 2: contains subdomains.domain.tld |
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(?: |
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[a-z0-9] # first chr of (sub)domain can not be a hyphen |
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[a-z0-9\-]{0,61} # middle chrs of (sub)domain may be a hyphen; |
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# limit qty of middle chrs so total domain does not exceed 63 chrs |
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[a-z0-9] # last chr of (sub)domain can not be a hyphen |
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\. # dot separator |
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)+ |
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(?: |
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' . RE::top_level_domains() . ' # validates top level domain |
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) |
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(?: # optional port numbers |
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: |
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(?: |
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[1-5]?[0-9]{1,4} | 6[0-4][0-9]{3} | 65[0-4][0-9]{2} | 655[0-2][0-9] | 6553[0-5] |
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) |
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)? |
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) |
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(?<path> # Subpattern 3: contains path following domain |
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(?: |
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\/ # marks nested directory |
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[a-z0-9\"\$\-_\.\+!\*\'\(\),;\?:@=&\#]+ # valid characters within directory structure |
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)* |
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[\/]? # trailing slash if any |
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) |
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\Z |
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)`xi'; // required modifiers: x (multiline pattern) i (case insensitive). |
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} |
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/** |
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* Apply the tweak to a given textnode. |
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* |
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* @param Token[] $tokens Required. |
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* @param Settings $settings Required. |
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* @param bool $is_title Optional. Default false. |
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* @param \DOMText|null $textnode Optional. Default null. |
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* |
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* @return Token[] An array of tokens. |
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*/ |
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public function apply( array $tokens, Settings $settings, $is_title = false, \DOMText $textnode = null ) { |
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if ( empty( $settings[ Settings::URL_WRAP ] ) || empty( $settings[ Settings::URL_MIN_AFTER_WRAP ] ) ) { |
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return $tokens; |
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} |
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// Test for and parse urls. |
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foreach ( $tokens as $token_index => $text_token ) { |
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if ( \preg_match( $this->url_pattern, $text_token->value, $url_match ) ) { |
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// $url_match['schema'] holds "http://". |
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// $url_match['domain'] holds "subdomains.domain.tld". |
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// $url_match['path'] holds the path after the domain. |
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$http = ( $url_match['schema'] ) ? $url_match[1] . U::ZERO_WIDTH_SPACE : ''; |
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$domain_parts = \preg_split( self::WRAP_URLS_DOMAIN_PARTS, $url_match['domain'], -1, PREG_SPLIT_DELIM_CAPTURE ); |
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if ( false === $domain_parts ) { |
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// Should not happen. |
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continue; // @codeCoverageIgnore |
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} |
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// This is a hack, but it works. |
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// First, we hyphenate each part, we need it formated like a group of words. |
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$parsed_words_like = []; |
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foreach ( $domain_parts as $key => $part ) { |
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$parsed_words_like[ $key ] = new Text_Parser\Token( $part, Text_Parser\Token::OTHER ); |
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} |
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// Do the hyphenation. |
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$parsed_words_like = $this->do_hyphenate( $parsed_words_like, $settings, U::ZERO_WIDTH_SPACE ); |
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// Restore format. |
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foreach ( $parsed_words_like as $key => $parsed_word ) { |
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$value = $parsed_word->value; |
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if ( $key > 0 && 1 === \strlen( $value ) ) { |
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$domain_parts[ $key ] = U::ZERO_WIDTH_SPACE . $value; |
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} else { |
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$domain_parts[ $key ] = $value; |
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} |
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} |
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// Lastly let's recombine. |
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$domain = \implode( '', $domain_parts ); |
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// Break up the URL path to individual characters. |
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$path_parts = \str_split( $url_match['path'], 1 ); |
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$path_count = \count( $path_parts ); |
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$path = ''; |
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foreach ( $path_parts as $index => $path_part ) { |
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if ( 0 === $index || $path_count - $index < $settings[ Settings::URL_MIN_AFTER_WRAP ] ) { |
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$path .= $path_part; |
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} else { |
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$path .= U::ZERO_WIDTH_SPACE . $path_part; |
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} |
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} |
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$tokens[ $token_index ] = $text_token->with_value( $http . $domain . $path ); |
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} |
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} |
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return $tokens; |
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} |
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} |
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mundschenk-at /
php-typography
