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<?php |
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/* |
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* This file is part of the Ariadne Component Library. |
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* |
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* (c) Muze <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace arc; |
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/** |
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* This class contains the parse and css2XPath methods. |
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* In addition any other method statically called on this class |
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* will reroute the call to the XML writer instance at |
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* \arc\xml::$writer. It is automatically instantiated if needed. |
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* Or you can set it yourself to another Writer instance. |
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*/ |
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class xml |
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{ |
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/** |
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* @var xml\Writer The writer instance to use by default |
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*/ |
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static $writer = null; |
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public static function __callStatic( $name, $args ) |
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{ |
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if ( !isset(self::$writer) ) { |
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self::$writer = new xml\Writer(); |
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} |
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return call_user_func_array( [ self::$writer, $name ], $args ); |
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} |
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/** |
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* This parses an XML string and returns a Proxy |
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* @param string|Proxy $xml |
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* @return Proxy |
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* @throws \arc\Exception |
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*/ |
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public static function parse( $xml=null, $encoding = null ) |
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{ |
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$parser = new xml\Parser(); |
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return $parser->parse( $xml, $encoding ); |
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} |
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/** |
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* This method turns a single CSS 2 selector into an XPath query |
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* @param string $cssSelector |
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* @return string |
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*/ |
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public static function css2XPath( $cssSelector ) |
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{ |
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/* based on work by Tijs Verkoyen - http://blog.verkoyen.eu/blog/p/detail/css-selector-to-xpath-query/ */ |
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$translateList = array( |
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// E F: Matches any F element that is a descendant of an E element |
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'/(\w+)\s+(?=([^"]*"[^"]*")*[^"]*$)(\w+)/' |
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=> '\1//\3', |
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// E > F: Matches any F element that is a child of an element E |
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'/(\w+)\s*>\s*(\w+)/' |
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=> '\1/\2', |
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// E:first-child: Matches element E when E is the first child of its parent |
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'/(\w+|\*):first-child/' |
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=> '*[1]/self::\1', |
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// E:checked, E:disabled or E:selected |
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'/(\w+|\*):(checked|disabled|selected)/' |
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=> '\1 [ @\2 ]', |
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// E + F: Matches any F element immediately preceded by an element |
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'/(\w+)\s*\+\s*(\w+)/' |
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=> '\1/following-sibling::*[1]/self::\2', |
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// E ~ F: Matches any F element preceded by an element |
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'/(\w+)\s*\~\s*(\w+)/' |
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=> '\1/following-sibling::*/self::\2', |
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// E[foo]: Matches any E element with the "foo" attribute set (whatever the value) |
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'/(\w+)\[([\w\-]+)]/' |
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=> '\1 [ @\2 ]', |
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// E[foo="warning"]: Matches any E element whose "foo" attribute value is exactly equal to "warning" |
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'/(\w+)\[([\w\-]+)\=\"(.*)\"]/' |
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=> '\1[ contains( concat( " ", normalize-space(@\2), " " ), concat( " ", "\3", " " ) ) ]', |
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// .warning: HTML only. The same as *[class~="warning"] |
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'/(^|\s)\.([\w\-]+)+/' |
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=> '*[ contains( concat( " ", normalize-space(@class), " " ), concat( " ", "\2", " " ) ) ]', |
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// div.warning: HTML only. The same as DIV[class~="warning"] |
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'/(\w+|\*)\.([\w\-]+)+/' |
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=> '\1[ contains( concat( " ", normalize-space(@class), " " ), concat( " ", "\2", " " ) ) ]', |
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// E#myid: Matches any E element with id-attribute equal to "myid" |
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'/(\w+)+\#([\w\-]+)/' |
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=> '\1[ @id = "\2" ]', |
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// #myid: Matches any E element with id-attribute equal to "myid" |
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'/\#([\w\-]+)/' |
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=> '*[ @id = "\1" ]' |
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); |
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$cssSelectors = array_keys($translateList); |
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$xPathQueries = array_values($translateList); |
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do { |
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$continue = false; |
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$cssSelector = (string) preg_replace($cssSelectors, $xPathQueries, $cssSelector); |
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foreach ( $cssSelectors as $selector ) { |
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if ( preg_match($selector, $cssSelector) ) { |
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$continue = true; |
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break; |
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} |
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} |
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} while ( $continue ); |
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return '//'.$cssSelector; |
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} |
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} |
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Ariadne-CMS /
arc-xml
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The PSR-2 coding standard requires that all properties in a class have their visibility explicitly declared. If you declare a property using
the property is implicitly global.
To learn more about the PSR-2, please see the PHP-FIG site on the PSR-2.