diff options
Diffstat (limited to 'lib/CssXPath/Translator.php')
| -rw-r--r-- | lib/CssXPath/Translator.php | 323 |
1 files changed, 0 insertions, 323 deletions
diff --git a/lib/CssXPath/Translator.php b/lib/CssXPath/Translator.php deleted file mode 100644 index 140909099..000000000 --- a/lib/CssXPath/Translator.php +++ /dev/null @@ -1,323 +0,0 @@ -<?php /** @noinspection HtmlDeprecatedTag */ -namespace Gt\CssXPath; - -class Translator { - const cssRegex = - '/' - . '(?P<star>\*)' - . '|(:(?P<pseudo>[\w-]*))' - . '|\(*(?P<pseudospecifier>["\']*[\w\h-]*["\']*)\)' - . '|(?P<element>[\w-]*)' - . '|(?P<child>\s*>\s*)' - . '|(#(?P<id>[\w-]*))' - . '|(\.(?P<class>[\w-]*))' - . '|(?P<sibling>\s*\+\s*)' - . "|(\[(?P<attribute>[\w-]*)((?P<attribute_equals>[=~$]+)(?P<attribute_value>(.+\[\]'?)|[^\]]+))*\])+" - . '|(?P<descendant>\s+)' - . '/'; - - const EQUALS_EXACT = "="; - const EQUALS_CONTAINS_WORD = "~="; - const EQUALS_ENDS_WITH = "$="; - const EQUALS_CONTAINS = "*="; - const EQUALS_STARTS_WITH_OR_STARTS_WITH_HYPHENATED = "|="; - const EQUALS_STARTS_WITH = "^="; - - /** @var string */ - protected $cssSelector; - /** @var string */ - protected $prefix; - - public function __construct(string $cssSelector, string $prefix = ".//") { - $this->cssSelector = $cssSelector; - $this->prefix = $prefix; - } - - public function __toString():string { - return $this->asXPath(); - } - - public function asXPath():string { - return $this->convert($this->cssSelector); - } - - protected function convert(string $css):string { - $cssArray = preg_split( - '/(["\']).*?\1(*SKIP)(*F)|,/', - $css - ); - $xPathArray = []; - - foreach($cssArray as $input) { - $output = $this->convertSingleSelector(trim($input)); - $xPathArray []= $output; - } - - return implode(" | ", $xPathArray); - } - - protected function convertSingleSelector(string $css):string { - $thread = $this->preg_match_collated(self::cssRegex, $css); - $thread = array_values($thread); - - $xpath = [$this->prefix]; - $prevType = ""; - foreach($thread as $threadKey => $currentThreadItem) { - $next = isset($thread[$threadKey + 1]) - ? $thread[$threadKey + 1] - : false; - - switch ($currentThreadItem["type"]) { - case "star": - case "element": - $xpath []= $currentThreadItem['content']; - break; - - case "pseudo": - $specifier = ""; - if ($next && $next["type"] == "pseudospecifier") { - $specifier = "{$next['content']}"; - } - - switch ($currentThreadItem["content"]) { - case "disabled": - case "checked": - case "selected": - array_push( - $xpath, - "[@{$currentThreadItem['content']}]" - ); - break; - - case "text": - array_push( - $xpath, - '[@type="text"]' - ); - break; - - case "contains": - if(empty($specifier)) { - continue 3; - } - - array_push( - $xpath, - "[contains(text(),$specifier)]" - ); - break; - - case "first-child": - $prev = count($xpath) - 1; - $xpath[$prev] = '*[1]/self::' . $xpath[$prev]; - break; - - case "nth-child": - if (empty($specifier)) { - continue 3; - } - - $prev = count($xpath) - 1; - $previous = $xpath[$prev]; - - if (substr($previous, -1, 1) === "]") { - $xpath[$prev] = str_replace( - "]", - " and position() = $specifier]", - $xpath[$prev] - ); - } - else { - array_push( - $xpath, - "[$specifier]" - ); - } - break; - case "nth-of-type": - if (empty($specifier)) { - continue 3; - } - - $prev = count($xpath) - 1; - $previous = $xpath[$prev]; - - if(substr($previous, -1, 1) === "]") { - array_push( - $xpath, - "[$specifier]" - ); - } - else { - array_push( - $xpath, - "[$specifier]" - ); - } - break; - } - break; - - case "child": - array_push($xpath, "/"); - break; - - case "id": - array_push( - $xpath, - ($prevType != "element" ? '*' : '') - . "[@id='{$currentThreadItem['content']}']" - ); - break; - - case "class": - // https://devhints.io/xpath#class-check - array_push( - $xpath, - (($prevType != "element" && $prevType != "class") ? '*' : '') - . "[contains(concat(' ',normalize-space(@class),' '),' {$currentThreadItem['content']} ')]" - ); - break; - - case "sibling": - array_push( - $xpath, - "/following-sibling::*[1]/self::" - ); - break; - - case "attribute": - if(!$prevType) { - array_push($xpath, "*"); - } - - /** @var null|array<int, array<string, string>> $detail */ - $detail = $currentThreadItem["detail"] ?? null; - $detailType = $detail[0] ?? null; - $detailValue = $detail[1] ?? null; - - if(!$detailType - || $detailType["type"] !== "attribute_equals") { - array_push( - $xpath, - "[@{$currentThreadItem['content']}]" - ); - continue 2; - } - - $valueString = trim( - $detailValue["content"], - " '\"" - ); - - $equalsType = $detailType["content"]; - switch ($equalsType) { - case self::EQUALS_EXACT: - array_push( - $xpath, - "[@{$currentThreadItem['content']}=\"{$valueString}\"]" - ); - break; - - case self::EQUALS_CONTAINS: - throw new NotYetImplementedException(); - - case self::EQUALS_CONTAINS_WORD: - array_push( - $xpath, - "[" - . "contains(" - . "concat(\" \",@{$currentThreadItem['content']},\" \")," - . "concat(\" \",\"{$valueString}\",\" \")" - . ")" - . "]" - ); - break; - - case self::EQUALS_STARTS_WITH_OR_STARTS_WITH_HYPHENATED: - throw new NotYetImplementedException(); - - case self::EQUALS_STARTS_WITH: - throw new NotYetImplementedException(); - - case self::EQUALS_ENDS_WITH: - array_push( - $xpath, - "[" - . "substring(" - . "@{$currentThreadItem['content']}," - . "string-length(@{$currentThreadItem['content']}) - " - . "string-length(\"{$valueString}\") + 1)" - . "=\"{$valueString}\"" - . "]" - ); - break; - } - break; - - case "descendant": - array_push($xpath, "//"); - break; - } - - $prevType = $currentThreadItem["type"]; - } - - return implode("", $xpath); - } - - /** @return array<int, array<string, string>> */ - protected function preg_match_collated( - string $regex, - string $string, - callable $transform = null - ):array { - preg_match_all( - $regex, - $string, - $matches, - PREG_PATTERN_ORDER - ); - - $set = []; - foreach($matches[0] as $k => $v) { - if(!empty($v)) { - $set[$k] = null; - } - } - - foreach($matches as $k => $m) { - if(is_numeric($k)) { - continue; - } - - foreach($m as $i => $match) { - if($match === "") { - continue; - } - - $toSet = null; - - if($transform) { - $toSet = $transform($k, $match); - } - else { - $toSet = ["type" => $k, "content" => $match]; - } - - if(!isset($set[$i])) { - $set[$i] = $toSet; - } - else { - if(!isset($set[$i]["detail"])) { - $set[$i]["detail"] = []; - } - - array_push($set[$i]["detail"], $toSet); - } - } - } - - return $set; - } -} |