1: <?php
  2: 
  3: /**
  4:  * This file is part of the Nette Framework (https://nette.org)
  5:  *
  6:  * Copyright (c) 2004 David Grudl (http://davidgrudl.com)
  7:  *
  8:  * For the full copyright and license information, please view
  9:  * the file license.txt that was distributed with this source code.
 10:  * @package Nette\Templates
 11:  */
 12: 
 13: 
 14: 
 15: /**
 16:  * Standard template compile-time filters shipped with Nette Framework (https://nette.org)
 17:  *
 18:  * @author     David Grudl
 19:  * @package Nette\Templates
 20:  */
 21: final class NTemplateFilters
 22: {
 23: 
 24:     /**
 25:      * Static class - cannot be instantiated.
 26:      */
 27:     final public function __construct()
 28:     {
 29:         throw new LogicException("Cannot instantiate static class " . get_class($this));
 30:     }
 31: 
 32: 
 33: 
 34:     /********************* Filter removePhp ****************d*g**/
 35: 
 36: 
 37: 
 38:     /**
 39:      * Filters out PHP code.
 40:      * @param  string
 41:      * @return string
 42:      */
 43:     public static function removePhp($s)
 44:     {
 45:         return preg_replace('#\x01@php:p\d+@\x02#', '<?php ?>', $s); // Template hides PHP code in these snippets
 46:     }
 47: 
 48: 
 49: 
 50:     /********************* Filter relativeLinks ****************d*g**/
 51: 
 52: 
 53: 
 54:     /**
 55:      * Filter relativeLinks: prepends root to relative links.
 56:      * @param  string
 57:      * @return string
 58:      */
 59:     public static function relativeLinks($s)
 60:     {
 61:         return preg_replace(
 62:             '#(src|href|action)\s*=\s*(["\'])(?![a-z]+:|[\x01/\\#])#', // \x01 is PHP snippet
 63:             '$1=$2<?php echo \\$baseUri ?>',
 64:             $s
 65:         );
 66:     }
 67: 
 68: 
 69: 
 70:     /********************* Filter netteLinks ****************d*g**/
 71: 
 72: 
 73: 
 74:     /**
 75:      * Filter netteLinks: translates links "nette:...".
 76:      *   nette:destination?arg
 77:      * @param  string
 78:      * @return string
 79:      */
 80:     public static function netteLinks($s)
 81:     {
 82:         return preg_replace_callback(
 83:             '#(src|href|action)\s*=\s*(["\'])(nette:.*?)([\#"\'])#',
 84:             array(__CLASS__, 'netteLinksCb'),
 85:             $s
 86:         );
 87:     }
 88: 
 89: 
 90: 
 91:     /**
 92:      * Callback for self::netteLinks.
 93:      * Parses a "nette" URI (scheme is 'nette') and converts to real URI
 94:      */
 95:     private static function netteLinksCb($m)
 96:     {
 97:         list(, $attr, $quote, $uri, $fragment) = $m;
 98: 
 99:         $parts = parse_url($uri);
100:         if (isset($parts['scheme']) && $parts['scheme'] === 'nette') {
101:             return $attr . '=' . $quote . '<?php echo $template->escape($control->'
102:                 . "link('"
103:                 . (isset($parts['path']) ? $parts['path'] : 'this!')
104:                 . (isset($parts['query']) ? '?' . $parts['query'] : '')
105:                 . '\'))?>'
106:                 . $fragment;
107:         } else {
108:             return $m[0];
109:         }
110:     }
111: 
112: 
113: 
114:     /********************* Filter texyElements ****************d*g**/
115: 
116: 
117: 
118:     /** @var NTexy */
119:     public static $texy;
120: 
121: 
122: 
123:     /**
124:      * Process <texy>...</texy> elements.
125:      * @param  string
126:      * @return string
127:      */
128:     public static function texyElements($s)
129:     {
130:         return preg_replace_callback(
131:             '#<texy([^>]*)>(.*?)</texy>#s',
132:             array(__CLASS__, 'texyCb'),
133:             $s
134:         );
135:     }
136: 
137: 
138: 
139:     /**
140:      * Callback for self::texyBlocks.
141:      */
142:     private static function texyCb($m)
143:     {
144:         list(, $mAttrs, $mContent) = $m;
145: 
146:         // parse attributes
147:         $attrs = array();
148:         if ($mAttrs) {
149:             preg_match_all(
150:                 '#([a-z0-9:-]+)\s*(?:=\s*(\'[^\']*\'|"[^"]*"|[^\'"\s]+))?()#isu',
151:                 $mAttrs,
152:                 $arr,
153:                 PREG_SET_ORDER
154:             );
155: 
156:             foreach ($arr as $m) {
157:                 $key = strtolower($m[1]);
158:                 $val = $m[2];
159:                 if ($val == NULL) $attrs[$key] = TRUE;
160:                 elseif ($val{0} === '\'' || $val{0} === '"') $attrs[$key] = html_entity_decode(substr($val, 1, -1), ENT_QUOTES, 'UTF-8');
161:                 else $attrs[$key] = html_entity_decode($val, ENT_QUOTES, 'UTF-8');
162:             }
163:         }
164: 
165:         return self::$texy->process($m[2]);
166:     }
167: 
168: }
169: