method convert documentation in bbn\Util\CssXpath
css -> xpath
function($selector)
{
if (isset(self::$cache[$selector])) {
return self::$cache[$selector];
}
$xpath = ' ' . $selector;
if (self::$clearStrings) {
self::$strings = array();
}
/*
The order in which items are replaced is IMPORTANT!
*/
$regexs = array(
/*
First handle attributes and :contains()
these may contain "," " ", " > ", and other "special" strings
*/
array('/([\s]?)\[(.*?)\]/', array(\get_called_class(), 'callbackAttribs')),
// :contains(foo) // a jquery thing
array('/:contains\((.*?)\)/', function ($matches) {
self::$strings[] = '[contains(text(), "' . $matches[1] . '")]';
return '[{' . (\count(self::$strings) - 1) . '}]';
}),
array('/([\s]?):not\((.*?)\)/', function ($matches) {
// this currently works for simple :not(.classname)
// unsure of other selectors
self::$clearStrings = false;
$xpathNot = self::cssToXpath($matches[2]);
self::$clearStrings = true;
$xpathNot = \preg_replace('#^//\*\[(.+)\]#', '$1', $xpathNot);
self::$strings[] = ($matches[1] ? '*' : '') . '[not(' . $xpathNot . ')]';
return '[{' . (\count(self::$strings) - 1) . '}]';
}),
// All blocks of 2 or more spaces
array('/\s{2,}/', function () {
return ' ';
}),
// additional selectors (comma seperated)
array('/\s*,\s*/', function () {
return '|//';
}),
// input pseudo selectors
array(
'/:(text|password|checkbox|radio|reset|file|hidden|image|datetime|datetime-local|date|month|time|week|number|range|email|url|search|tel|color)/',
function ($matches) {
return '[@type="' . $matches[1] . '"]';
}
),
array('/([\s]?):button/', function ($matches) {
// button or input[@type="button"]
self::$strings[] = ($matches[1] ? '*' : '') . '[self::button or @type="button"]';
return '[{' . (\count(self::$strings) - 1) . '}]';
}),
array('/([\s]?):input/', function ($matches) {
self::$strings[] = ($matches[1] ? '*' : '') . '[self::input or self::select or self::textarea or self::button]';
return '[{' . (\count(self::$strings) - 1) . '}]';
}),
array('/([\s]?):submit/', function ($matches) {
// input[type="submit"] button[@type="submit"] button[not(@type)]
self::$strings[] = ($matches[1] ? '*' : '') . '[@type="submit" or (self::button and not(@type))]';
return '[{' . (\count(self::$strings) - 1) . '}]';
}),
array('/:header/', function () {
self::$strings[] = '*[self::h1 or self::h2 or self::h3 or self::h4 or self::h5 or self::h6]';
return '[{' . (\count(self::$strings) - 1) . '}]';
}),
array('/:(autofocus|checked|disabled|required|selected)/', function ($matches) {
return '[@' . $matches[1] . ']';
}),
array('/:autocomplete/', function () {
return '[@autocomplete="on"]';
}),
// :nth-child(n)
array('/(\S*):nth-child\((\d+)\)/', function ($matches) {
return ($matches[1] ? $matches[1] : '*')
. '[' . $matches[2] . ']';
}),
// :nth-last-child(n)
array('/(\S*):nth-last-child\((\d+)\)/', function ($matches) {
return ($matches[1] ? $matches[1] : '*')
. '[position()=(last()-(' . $matches[2] . '-1))]';
}),
// :last-child
array('/(\S*):last-child/', function ($matches) {
return ($matches[1] ? $matches[1] : '*')
. '[last()]';
}),
// :first-child
array('/(\S*):first-child/', function ($matches) {
return ($matches[1] ? $matches[1] : '*')
. '[1]';
}),
// Adjacent "sibling" selectors
array('/\s*\+\s*([^\s]+)/', function ($matches) {
return '/following-sibling::' . $matches[1] . '[1]';
}),
// General "sibling" selectors
array('/\s*~\s*([^\s]+)/', function ($matches) {
return '/following-sibling::' . $matches[1];
}),
// "child" selectors
array('/\s*>\s*/', function () {
return '/';
}),
// Remaining Spaces
array('/\s/', function () {
return '//';
}),
// #id
array('/([a-z0-9\]]?)#([a-z][-a-z0-9_]+)/i', function ($matches) {
return $matches[1]
. ($matches[1] ? '' : '*')
. '[@id="' . $matches[2] . '"]';
}),
// .className
// tricky. without limiting the replacement, the first group will be empty for the 2nd class
// test case:
// foo.classa.classb
array('/([a-z0-9\]]?)\.(-?[_a-z]+[_a-z0-9-]*)/i', function ($matches) {
return $matches[1]
. ($matches[1] ? '' : '*')
. '[contains(concat(" ", normalize-space(@class), " "), " ' . $matches[2] . ' ")]';
}, 1),
array('/:scope/', function () {
return '//';
}),
// The Relational Pseudo-class: :has()
// https://www.w3.org/TR/selectors-4/#has-pseudo
// E! : https://www.w3.org/TR/selectors4/
array('/^.+!.+$/', function ($matches) {
$subSelectors = \explode(',', $matches[0]);
foreach ($subSelectors as $i => $subSelector) {
$parts = \explode('!', $subSelector);
$subSelector = \array_shift($parts);
if (\preg_match_all('/((?:[^\/]*\/?\/?)|$)/', $parts[0], $matches)) {
$results = $matches[0];
$results[] = \str_repeat('/..', \count($results) - 2);
$subSelector .= \implode('', $results);
}
$subSelectors[$i] = $subSelector;
}
return \implode(',', $subSelectors);
}),
// Restore strings
array('/\[\{(\d+)\}\]/', function ($matches) {
return self::$strings[$matches[1]];
}),
);
foreach ($regexs as $regCallback) {
$limit = isset($regCallback[2]) ? $regCallback[2] : -1;
if ($limit < 0) {
$xpath = \preg_replace_callback($regCallback[0], $regCallback[1], $xpath);
continue;
}
$count = 0;
do {
$xpath = \preg_replace_callback($regCallback[0], $regCallback[1], $xpath, $limit, $count);
} while ($count > 0);
}
$xpath = \preg_match('/^\/\//', $xpath) ? $xpath : '//' . $xpath;
$xpath = \preg_replace('#/{4}#', '', $xpath);
self::$cache[$selector] = $xpath;
return $xpath;
}
css -> xpath BBN is a suite of PHP and JS libraries and VueJS components - all open-source! bbn.io, build applications, the quick way
This website uses cookies to ensure you get the best experience on our website.
© 2011-2025
BBN Solutions
