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feature: not selector classes
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2 files changed

+236
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‎src/NotSelectorConditionBuilder.php‎

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<?php
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namespace Gt\CssXPath;
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class NotSelectorConditionBuilder {
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private ThreadMatcher $threadMatcher;
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private AttributeSelectorConverter $attributeSelectorConverter;
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public function __construct(
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?ThreadMatcher $threadMatcher = null,
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?AttributeSelectorConverter $attributeSelectorConverter = null,
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) {
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$this->threadMatcher = $threadMatcher ?? new ThreadMatcher();
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$this->attributeSelectorConverter = $attributeSelectorConverter
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?? new AttributeSelectorConverter();
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}
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public function build(string $selector, bool $htmlMode):?string {
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$selector = trim($selector);
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if($selector === "") {
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return null;
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}
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$thread = array_values(
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$this->threadMatcher->collate(Translator::CSS_REGEX, $selector)
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);
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if(!$this->isSupportedThread($thread)) {
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return null;
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}
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$token = $thread[0];
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$next = $thread[1] ?? null;
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return $this->buildConditionFromToken($token, $next, $htmlMode);
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}
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/** @param array<int, array<string, mixed>> $thread */
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private function isSupportedThread(array $thread):bool {
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if(empty($thread) || count($thread) > 2) {
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return false;
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}
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foreach($thread as $token) {
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if($this->isAxisToken((string)$token["type"])) {
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return false;
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}
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}
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return true;
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}
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private function isAxisToken(string $type):bool {
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return in_array($type, [
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"descendant",
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"child",
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"sibling",
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"subsequentsibling",
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], true);
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}
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/**
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* @param array<string, mixed> $token
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* @param array<string, mixed>|null $next
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*/
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private function buildConditionFromToken(
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array $token,
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?array $next,
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bool $htmlMode
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):?string {
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return match($token["type"]) {
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"element", "star" => $this->buildElementCondition(
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(string)$token["content"],
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$htmlMode
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),
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"id" => "@id='" . $token["content"] . "'",
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"class" => ""
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. "contains(concat(' ',normalize-space(@class),' '),"
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. "' " . $token["content"] . " ')",
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"attribute" => $this
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->attributeSelectorConverter
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->buildConditionFromToken($token, $htmlMode),
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"pseudo" => $this->buildPseudoCondition($token, $next),
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default => null,
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};
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}
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/**
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* @param array<string, mixed> $token
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* @param array<string, mixed>|null $next
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*/
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private function buildPseudoCondition(array $token, ?array $next):?string {
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$pseudo = (string)$token["content"];
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$specifier = $this->extractSpecifier($next);
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if(in_array($pseudo, ["disabled", "checked", "selected"], true)) {
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return "@{$pseudo}";
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}
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return match($pseudo) {
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"text" => '@type="text"',
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"contains" => $specifier !== ""
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? "contains(text(),{$specifier})"
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: null,
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"first-child", "first-of-type" => "position() = 1",
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"nth-child", "nth-of-type" => $specifier !== ""
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? "position() = {$specifier}"
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: null,
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"last-child", "last-of-type" => "position() = last()",
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default => null,
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};
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}
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private function buildElementCondition(string $name, bool $htmlMode):string {
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if($name === "*") {
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return "self::*";
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}
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$element = $htmlMode ? strtolower($name) : $name;
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return "self::{$element}";
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}
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/** @param array<string, mixed>|null $next */
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private function extractSpecifier(?array $next):string {
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if(!$next || $next["type"] !== "pseudospecifier") {
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return "";
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}
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return (string)$next["content"];
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}
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}

‎src/SelectorListSplitter.php‎

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<?php
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namespace Gt\CssXPath;
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class SelectorListSplitter {
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/** @return array<int, string> */
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public function split(string $selectorList):array {
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$selectorList = trim($selectorList);
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if($selectorList === "") {
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return [];
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}
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$parts = [];
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$current = "";
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$quote = null;
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$bracketDepth = 0;
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$parenDepth = 0;
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$length = strlen($selectorList);
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for($i = 0; $i < $length; $i++) {
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$char = $selectorList[$i];
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if($this->handleQuotedState($char, $current, $quote)) {
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continue;
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}
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if($this->openQuoteIfNeeded($char, $current, $quote)) {
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continue;
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}
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$this->trackDepth($char, $bracketDepth, $parenDepth);
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if($this->isTopLevelComma($char, $bracketDepth, $parenDepth)) {
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$this->appendCurrentPart($parts, $current);
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$current = "";
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continue;
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}
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$current .= $char;
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}
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$this->appendCurrentPart($parts, $current);
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return $parts;
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}
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private function handleQuotedState(
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string $char,
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string &$current,
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?string &$quote
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):bool {
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if($quote === null) {
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return false;
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}
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$current .= $char;
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if($char === $quote) {
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$quote = null;
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}
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return true;
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}
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private function openQuoteIfNeeded(
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string $char,
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string &$current,
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?string &$quote
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):bool {
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if($char !== "'" && $char !== '"') {
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return false;
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}
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$quote = $char;
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$current .= $char;
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return true;
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}
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private function trackDepth(
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string $char,
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int &$bracketDepth,
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int &$parenDepth
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):void {
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match($char) {
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"[" => $bracketDepth++,
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"]" => $bracketDepth = max(0, $bracketDepth - 1),
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"(" => $parenDepth++,
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")" => $parenDepth = max(0, $parenDepth - 1),
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default => null,
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};
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}
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private function isTopLevelComma(
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string $char,
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int $bracketDepth,
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int $parenDepth
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):bool {
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return $char === ","
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&& $bracketDepth === 0
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&& $parenDepth === 0;
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}
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/** @param array<int, string> $parts */
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private function appendCurrentPart(array &$parts, string $current):void {
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$trimmed = trim($current);
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if($trimmed !== "") {
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$parts[] = $trimmed;
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}
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}
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}

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