/home/mip/mip/public/img/credit/datatables/XPath.tar
Extension/NodeExtension.php 0000644 00000013373 15152054436 0012027 0 ustar 00 <?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\CssSelector\XPath\Extension;
use Symfony\Component\CssSelector\Node;
use Symfony\Component\CssSelector\XPath\Translator;
use Symfony\Component\CssSelector\XPath\XPathExpr;
/**
* XPath expression translator node extension.
*
* This component is a port of the Python cssselect library,
* which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
*
* @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
*
* @internal
*/
class NodeExtension extends AbstractExtension
{
public const ELEMENT_NAME_IN_LOWER_CASE = 1;
public const ATTRIBUTE_NAME_IN_LOWER_CASE = 2;
public const ATTRIBUTE_VALUE_IN_LOWER_CASE = 4;
private $flags;
public function __construct(int $flags = 0)
{
$this->flags = $flags;
}
/**
* @return $this
*/
public function setFlag(int $flag, bool $on): self
{
if ($on && !$this->hasFlag($flag)) {
$this->flags += $flag;
}
if (!$on && $this->hasFlag($flag)) {
$this->flags -= $flag;
}
return $this;
}
public function hasFlag(int $flag): bool
{
return (bool) ($this->flags & $flag);
}
/**
* {@inheritdoc}
*/
public function getNodeTranslators(): array
{
return [
'Selector' => [$this, 'translateSelector'],
'CombinedSelector' => [$this, 'translateCombinedSelector'],
'Negation' => [$this, 'translateNegation'],
'Function' => [$this, 'translateFunction'],
'Pseudo' => [$this, 'translatePseudo'],
'Attribute' => [$this, 'translateAttribute'],
'Class' => [$this, 'translateClass'],
'Hash' => [$this, 'translateHash'],
'Element' => [$this, 'translateElement'],
];
}
public function translateSelector(Node\SelectorNode $node, Translator $translator): XPathExpr
{
return $translator->nodeToXPath($node->getTree());
}
public function translateCombinedSelector(Node\CombinedSelectorNode $node, Translator $translator): XPathExpr
{
return $translator->addCombination($node->getCombinator(), $node->getSelector(), $node->getSubSelector());
}
public function translateNegation(Node\NegationNode $node, Translator $translator): XPathExpr
{
$xpath = $translator->nodeToXPath($node->getSelector());
$subXpath = $translator->nodeToXPath($node->getSubSelector());
$subXpath->addNameTest();
if ($subXpath->getCondition()) {
return $xpath->addCondition(sprintf('not(%s)', $subXpath->getCondition()));
}
return $xpath->addCondition('0');
}
public function translateFunction(Node\FunctionNode $node, Translator $translator): XPathExpr
{
$xpath = $translator->nodeToXPath($node->getSelector());
return $translator->addFunction($xpath, $node);
}
public function translatePseudo(Node\PseudoNode $node, Translator $translator): XPathExpr
{
$xpath = $translator->nodeToXPath($node->getSelector());
return $translator->addPseudoClass($xpath, $node->getIdentifier());
}
public function translateAttribute(Node\AttributeNode $node, Translator $translator): XPathExpr
{
$name = $node->getAttribute();
$safe = $this->isSafeName($name);
if ($this->hasFlag(self::ATTRIBUTE_NAME_IN_LOWER_CASE)) {
$name = strtolower($name);
}
if ($node->getNamespace()) {
$name = sprintf('%s:%s', $node->getNamespace(), $name);
$safe = $safe && $this->isSafeName($node->getNamespace());
}
$attribute = $safe ? '@'.$name : sprintf('attribute::*[name() = %s]', Translator::getXpathLiteral($name));
$value = $node->getValue();
$xpath = $translator->nodeToXPath($node->getSelector());
if ($this->hasFlag(self::ATTRIBUTE_VALUE_IN_LOWER_CASE)) {
$value = strtolower($value);
}
return $translator->addAttributeMatching($xpath, $node->getOperator(), $attribute, $value);
}
public function translateClass(Node\ClassNode $node, Translator $translator): XPathExpr
{
$xpath = $translator->nodeToXPath($node->getSelector());
return $translator->addAttributeMatching($xpath, '~=', '@class', $node->getName());
}
public function translateHash(Node\HashNode $node, Translator $translator): XPathExpr
{
$xpath = $translator->nodeToXPath($node->getSelector());
return $translator->addAttributeMatching($xpath, '=', '@id', $node->getId());
}
public function translateElement(Node\ElementNode $node): XPathExpr
{
$element = $node->getElement();
if ($element && $this->hasFlag(self::ELEMENT_NAME_IN_LOWER_CASE)) {
$element = strtolower($element);
}
if ($element) {
$safe = $this->isSafeName($element);
} else {
$element = '*';
$safe = true;
}
if ($node->getNamespace()) {
$element = sprintf('%s:%s', $node->getNamespace(), $element);
$safe = $safe && $this->isSafeName($node->getNamespace());
}
$xpath = new XPathExpr('', $element);
if (!$safe) {
$xpath->addNameTest();
}
return $xpath;
}
/**
* {@inheritdoc}
*/
public function getName(): string
{
return 'node';
}
private function isSafeName(string $name): bool
{
return 0 < preg_match('~^[a-zA-Z_][a-zA-Z0-9_.-]*$~', $name);
}
}
Extension/AbstractExtension.php 0000644 00000002365 15152054436 0012704 0 ustar 00 <?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\CssSelector\XPath\Extension;
/**
* XPath expression translator abstract extension.
*
* This component is a port of the Python cssselect library,
* which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
*
* @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
*
* @internal
*/
abstract class AbstractExtension implements ExtensionInterface
{
/**
* {@inheritdoc}
*/
public function getNodeTranslators(): array
{
return [];
}
/**
* {@inheritdoc}
*/
public function getCombinationTranslators(): array
{
return [];
}
/**
* {@inheritdoc}
*/
public function getFunctionTranslators(): array
{
return [];
}
/**
* {@inheritdoc}
*/
public function getPseudoClassTranslators(): array
{
return [];
}
/**
* {@inheritdoc}
*/
public function getAttributeMatchingTranslators(): array
{
return [];
}
}
Extension/PseudoClassExtension.php 0000644 00000006525 15152054436 0013370 0 ustar 00 <?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\CssSelector\XPath\Extension;
use Symfony\Component\CssSelector\Exception\ExpressionErrorException;
use Symfony\Component\CssSelector\XPath\XPathExpr;
/**
* XPath expression translator pseudo-class extension.
*
* This component is a port of the Python cssselect library,
* which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
*
* @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
*
* @internal
*/
class PseudoClassExtension extends AbstractExtension
{
/**
* {@inheritdoc}
*/
public function getPseudoClassTranslators(): array
{
return [
'root' => [$this, 'translateRoot'],
'first-child' => [$this, 'translateFirstChild'],
'last-child' => [$this, 'translateLastChild'],
'first-of-type' => [$this, 'translateFirstOfType'],
'last-of-type' => [$this, 'translateLastOfType'],
'only-child' => [$this, 'translateOnlyChild'],
'only-of-type' => [$this, 'translateOnlyOfType'],
'empty' => [$this, 'translateEmpty'],
];
}
public function translateRoot(XPathExpr $xpath): XPathExpr
{
return $xpath->addCondition('not(parent::*)');
}
public function translateFirstChild(XPathExpr $xpath): XPathExpr
{
return $xpath
->addStarPrefix()
->addNameTest()
->addCondition('position() = 1');
}
public function translateLastChild(XPathExpr $xpath): XPathExpr
{
return $xpath
->addStarPrefix()
->addNameTest()
->addCondition('position() = last()');
}
/**
* @throws ExpressionErrorException
*/
public function translateFirstOfType(XPathExpr $xpath): XPathExpr
{
if ('*' === $xpath->getElement()) {
throw new ExpressionErrorException('"*:first-of-type" is not implemented.');
}
return $xpath
->addStarPrefix()
->addCondition('position() = 1');
}
/**
* @throws ExpressionErrorException
*/
public function translateLastOfType(XPathExpr $xpath): XPathExpr
{
if ('*' === $xpath->getElement()) {
throw new ExpressionErrorException('"*:last-of-type" is not implemented.');
}
return $xpath
->addStarPrefix()
->addCondition('position() = last()');
}
public function translateOnlyChild(XPathExpr $xpath): XPathExpr
{
return $xpath
->addStarPrefix()
->addNameTest()
->addCondition('last() = 1');
}
public function translateOnlyOfType(XPathExpr $xpath): XPathExpr
{
$element = $xpath->getElement();
return $xpath->addCondition(sprintf('count(preceding-sibling::%s)=0 and count(following-sibling::%s)=0', $element, $element));
}
public function translateEmpty(XPathExpr $xpath): XPathExpr
{
return $xpath->addCondition('not(*) and not(string-length())');
}
/**
* {@inheritdoc}
*/
public function getName(): string
{
return 'pseudo-class';
}
}
Extension/CombinationExtension.php 0000644 00000003625 15152054436 0013403 0 ustar 00 <?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\CssSelector\XPath\Extension;
use Symfony\Component\CssSelector\XPath\XPathExpr;
/**
* XPath expression translator combination extension.
*
* This component is a port of the Python cssselect library,
* which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
*
* @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
*
* @internal
*/
class CombinationExtension extends AbstractExtension
{
/**
* {@inheritdoc}
*/
public function getCombinationTranslators(): array
{
return [
' ' => [$this, 'translateDescendant'],
'>' => [$this, 'translateChild'],
'+' => [$this, 'translateDirectAdjacent'],
'~' => [$this, 'translateIndirectAdjacent'],
];
}
public function translateDescendant(XPathExpr $xpath, XPathExpr $combinedXpath): XPathExpr
{
return $xpath->join('/descendant-or-self::*/', $combinedXpath);
}
public function translateChild(XPathExpr $xpath, XPathExpr $combinedXpath): XPathExpr
{
return $xpath->join('/', $combinedXpath);
}
public function translateDirectAdjacent(XPathExpr $xpath, XPathExpr $combinedXpath): XPathExpr
{
return $xpath
->join('/following-sibling::', $combinedXpath)
->addNameTest()
->addCondition('position() = 1');
}
public function translateIndirectAdjacent(XPathExpr $xpath, XPathExpr $combinedXpath): XPathExpr
{
return $xpath->join('/following-sibling::', $combinedXpath);
}
/**
* {@inheritdoc}
*/
public function getName(): string
{
return 'combination';
}
}
Extension/AttributeMatchingExtension.php 0000644 00000007356 15152054436 0014564 0 ustar 00 <?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\CssSelector\XPath\Extension;
use Symfony\Component\CssSelector\XPath\Translator;
use Symfony\Component\CssSelector\XPath\XPathExpr;
/**
* XPath expression translator attribute extension.
*
* This component is a port of the Python cssselect library,
* which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
*
* @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
*
* @internal
*/
class AttributeMatchingExtension extends AbstractExtension
{
/**
* {@inheritdoc}
*/
public function getAttributeMatchingTranslators(): array
{
return [
'exists' => [$this, 'translateExists'],
'=' => [$this, 'translateEquals'],
'~=' => [$this, 'translateIncludes'],
'|=' => [$this, 'translateDashMatch'],
'^=' => [$this, 'translatePrefixMatch'],
'$=' => [$this, 'translateSuffixMatch'],
'*=' => [$this, 'translateSubstringMatch'],
'!=' => [$this, 'translateDifferent'],
];
}
public function translateExists(XPathExpr $xpath, string $attribute, ?string $value): XPathExpr
{
return $xpath->addCondition($attribute);
}
public function translateEquals(XPathExpr $xpath, string $attribute, ?string $value): XPathExpr
{
return $xpath->addCondition(sprintf('%s = %s', $attribute, Translator::getXpathLiteral($value)));
}
public function translateIncludes(XPathExpr $xpath, string $attribute, ?string $value): XPathExpr
{
return $xpath->addCondition($value ? sprintf(
'%1$s and contains(concat(\' \', normalize-space(%1$s), \' \'), %2$s)',
$attribute,
Translator::getXpathLiteral(' '.$value.' ')
) : '0');
}
public function translateDashMatch(XPathExpr $xpath, string $attribute, ?string $value): XPathExpr
{
return $xpath->addCondition(sprintf(
'%1$s and (%1$s = %2$s or starts-with(%1$s, %3$s))',
$attribute,
Translator::getXpathLiteral($value),
Translator::getXpathLiteral($value.'-')
));
}
public function translatePrefixMatch(XPathExpr $xpath, string $attribute, ?string $value): XPathExpr
{
return $xpath->addCondition($value ? sprintf(
'%1$s and starts-with(%1$s, %2$s)',
$attribute,
Translator::getXpathLiteral($value)
) : '0');
}
public function translateSuffixMatch(XPathExpr $xpath, string $attribute, ?string $value): XPathExpr
{
return $xpath->addCondition($value ? sprintf(
'%1$s and substring(%1$s, string-length(%1$s)-%2$s) = %3$s',
$attribute,
\strlen($value) - 1,
Translator::getXpathLiteral($value)
) : '0');
}
public function translateSubstringMatch(XPathExpr $xpath, string $attribute, ?string $value): XPathExpr
{
return $xpath->addCondition($value ? sprintf(
'%1$s and contains(%1$s, %2$s)',
$attribute,
Translator::getXpathLiteral($value)
) : '0');
}
public function translateDifferent(XPathExpr $xpath, string $attribute, ?string $value): XPathExpr
{
return $xpath->addCondition(sprintf(
$value ? 'not(%1$s) or %1$s != %2$s' : '%s != %s',
$attribute,
Translator::getXpathLiteral($value)
));
}
/**
* {@inheritdoc}
*/
public function getName(): string
{
return 'attribute-matching';
}
}
Extension/HtmlExtension.php 0000644 00000013426 15152054436 0012045 0 ustar 00 <?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\CssSelector\XPath\Extension;
use Symfony\Component\CssSelector\Exception\ExpressionErrorException;
use Symfony\Component\CssSelector\Node\FunctionNode;
use Symfony\Component\CssSelector\XPath\Translator;
use Symfony\Component\CssSelector\XPath\XPathExpr;
/**
* XPath expression translator HTML extension.
*
* This component is a port of the Python cssselect library,
* which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
*
* @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
*
* @internal
*/
class HtmlExtension extends AbstractExtension
{
public function __construct(Translator $translator)
{
$translator
->getExtension('node')
->setFlag(NodeExtension::ELEMENT_NAME_IN_LOWER_CASE, true)
->setFlag(NodeExtension::ATTRIBUTE_NAME_IN_LOWER_CASE, true);
}
/**
* {@inheritdoc}
*/
public function getPseudoClassTranslators(): array
{
return [
'checked' => [$this, 'translateChecked'],
'link' => [$this, 'translateLink'],
'disabled' => [$this, 'translateDisabled'],
'enabled' => [$this, 'translateEnabled'],
'selected' => [$this, 'translateSelected'],
'invalid' => [$this, 'translateInvalid'],
'hover' => [$this, 'translateHover'],
'visited' => [$this, 'translateVisited'],
];
}
/**
* {@inheritdoc}
*/
public function getFunctionTranslators(): array
{
return [
'lang' => [$this, 'translateLang'],
];
}
public function translateChecked(XPathExpr $xpath): XPathExpr
{
return $xpath->addCondition(
'(@checked '
."and (name(.) = 'input' or name(.) = 'command')"
."and (@type = 'checkbox' or @type = 'radio'))"
);
}
public function translateLink(XPathExpr $xpath): XPathExpr
{
return $xpath->addCondition("@href and (name(.) = 'a' or name(.) = 'link' or name(.) = 'area')");
}
public function translateDisabled(XPathExpr $xpath): XPathExpr
{
return $xpath->addCondition(
'('
.'@disabled and'
.'('
."(name(.) = 'input' and @type != 'hidden')"
." or name(.) = 'button'"
." or name(.) = 'select'"
." or name(.) = 'textarea'"
." or name(.) = 'command'"
." or name(.) = 'fieldset'"
." or name(.) = 'optgroup'"
." or name(.) = 'option'"
.')'
.') or ('
."(name(.) = 'input' and @type != 'hidden')"
." or name(.) = 'button'"
." or name(.) = 'select'"
." or name(.) = 'textarea'"
.')'
.' and ancestor::fieldset[@disabled]'
);
// todo: in the second half, add "and is not a descendant of that fieldset element's first legend element child, if any."
}
public function translateEnabled(XPathExpr $xpath): XPathExpr
{
return $xpath->addCondition(
'('
.'@href and ('
."name(.) = 'a'"
." or name(.) = 'link'"
." or name(.) = 'area'"
.')'
.') or ('
.'('
."name(.) = 'command'"
." or name(.) = 'fieldset'"
." or name(.) = 'optgroup'"
.')'
.' and not(@disabled)'
.') or ('
.'('
."(name(.) = 'input' and @type != 'hidden')"
." or name(.) = 'button'"
." or name(.) = 'select'"
." or name(.) = 'textarea'"
." or name(.) = 'keygen'"
.')'
.' and not (@disabled or ancestor::fieldset[@disabled])'
.') or ('
."name(.) = 'option' and not("
.'@disabled or ancestor::optgroup[@disabled]'
.')'
.')'
);
}
/**
* @throws ExpressionErrorException
*/
public function translateLang(XPathExpr $xpath, FunctionNode $function): XPathExpr
{
$arguments = $function->getArguments();
foreach ($arguments as $token) {
if (!($token->isString() || $token->isIdentifier())) {
throw new ExpressionErrorException('Expected a single string or identifier for :lang(), got '.implode(', ', $arguments));
}
}
return $xpath->addCondition(sprintf(
'ancestor-or-self::*[@lang][1][starts-with(concat('
."translate(@%s, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz'), '-')"
.', %s)]',
'lang',
Translator::getXpathLiteral(strtolower($arguments[0]->getValue()).'-')
));
}
public function translateSelected(XPathExpr $xpath): XPathExpr
{
return $xpath->addCondition("(@selected and name(.) = 'option')");
}
public function translateInvalid(XPathExpr $xpath): XPathExpr
{
return $xpath->addCondition('0');
}
public function translateHover(XPathExpr $xpath): XPathExpr
{
return $xpath->addCondition('0');
}
public function translateVisited(XPathExpr $xpath): XPathExpr
{
return $xpath->addCondition('0');
}
/**
* {@inheritdoc}
*/
public function getName(): string
{
return 'html';
}
}
Extension/ExtensionInterface.php 0000644 00000003005 15152054436 0013031 0 ustar 00 <?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\CssSelector\XPath\Extension;
/**
* XPath expression translator extension interface.
*
* This component is a port of the Python cssselect library,
* which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
*
* @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
*
* @internal
*/
interface ExtensionInterface
{
/**
* Returns node translators.
*
* These callables will receive the node as first argument and the translator as second argument.
*
* @return callable[]
*/
public function getNodeTranslators(): array;
/**
* Returns combination translators.
*
* @return callable[]
*/
public function getCombinationTranslators(): array;
/**
* Returns function translators.
*
* @return callable[]
*/
public function getFunctionTranslators(): array;
/**
* Returns pseudo-class translators.
*
* @return callable[]
*/
public function getPseudoClassTranslators(): array;
/**
* Returns attribute operation translators.
*
* @return callable[]
*/
public function getAttributeMatchingTranslators(): array;
/**
* Returns extension name.
*/
public function getName(): string;
}
Extension/FunctionExtension.php 0000644 00000012154 15152054436 0012723 0 ustar 00 <?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\CssSelector\XPath\Extension;
use Symfony\Component\CssSelector\Exception\ExpressionErrorException;
use Symfony\Component\CssSelector\Exception\SyntaxErrorException;
use Symfony\Component\CssSelector\Node\FunctionNode;
use Symfony\Component\CssSelector\Parser\Parser;
use Symfony\Component\CssSelector\XPath\Translator;
use Symfony\Component\CssSelector\XPath\XPathExpr;
/**
* XPath expression translator function extension.
*
* This component is a port of the Python cssselect library,
* which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
*
* @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
*
* @internal
*/
class FunctionExtension extends AbstractExtension
{
/**
* {@inheritdoc}
*/
public function getFunctionTranslators(): array
{
return [
'nth-child' => [$this, 'translateNthChild'],
'nth-last-child' => [$this, 'translateNthLastChild'],
'nth-of-type' => [$this, 'translateNthOfType'],
'nth-last-of-type' => [$this, 'translateNthLastOfType'],
'contains' => [$this, 'translateContains'],
'lang' => [$this, 'translateLang'],
];
}
/**
* @throws ExpressionErrorException
*/
public function translateNthChild(XPathExpr $xpath, FunctionNode $function, bool $last = false, bool $addNameTest = true): XPathExpr
{
try {
[$a, $b] = Parser::parseSeries($function->getArguments());
} catch (SyntaxErrorException $e) {
throw new ExpressionErrorException(sprintf('Invalid series: "%s".', implode('", "', $function->getArguments())), 0, $e);
}
$xpath->addStarPrefix();
if ($addNameTest) {
$xpath->addNameTest();
}
if (0 === $a) {
return $xpath->addCondition('position() = '.($last ? 'last() - '.($b - 1) : $b));
}
if ($a < 0) {
if ($b < 1) {
return $xpath->addCondition('false()');
}
$sign = '<=';
} else {
$sign = '>=';
}
$expr = 'position()';
if ($last) {
$expr = 'last() - '.$expr;
--$b;
}
if (0 !== $b) {
$expr .= ' - '.$b;
}
$conditions = [sprintf('%s %s 0', $expr, $sign)];
if (1 !== $a && -1 !== $a) {
$conditions[] = sprintf('(%s) mod %d = 0', $expr, $a);
}
return $xpath->addCondition(implode(' and ', $conditions));
// todo: handle an+b, odd, even
// an+b means every-a, plus b, e.g., 2n+1 means odd
// 0n+b means b
// n+0 means a=1, i.e., all elements
// an means every a elements, i.e., 2n means even
// -n means -1n
// -1n+6 means elements 6 and previous
}
public function translateNthLastChild(XPathExpr $xpath, FunctionNode $function): XPathExpr
{
return $this->translateNthChild($xpath, $function, true);
}
public function translateNthOfType(XPathExpr $xpath, FunctionNode $function): XPathExpr
{
return $this->translateNthChild($xpath, $function, false, false);
}
/**
* @throws ExpressionErrorException
*/
public function translateNthLastOfType(XPathExpr $xpath, FunctionNode $function): XPathExpr
{
if ('*' === $xpath->getElement()) {
throw new ExpressionErrorException('"*:nth-of-type()" is not implemented.');
}
return $this->translateNthChild($xpath, $function, true, false);
}
/**
* @throws ExpressionErrorException
*/
public function translateContains(XPathExpr $xpath, FunctionNode $function): XPathExpr
{
$arguments = $function->getArguments();
foreach ($arguments as $token) {
if (!($token->isString() || $token->isIdentifier())) {
throw new ExpressionErrorException('Expected a single string or identifier for :contains(), got '.implode(', ', $arguments));
}
}
return $xpath->addCondition(sprintf(
'contains(string(.), %s)',
Translator::getXpathLiteral($arguments[0]->getValue())
));
}
/**
* @throws ExpressionErrorException
*/
public function translateLang(XPathExpr $xpath, FunctionNode $function): XPathExpr
{
$arguments = $function->getArguments();
foreach ($arguments as $token) {
if (!($token->isString() || $token->isIdentifier())) {
throw new ExpressionErrorException('Expected a single string or identifier for :lang(), got '.implode(', ', $arguments));
}
}
return $xpath->addCondition(sprintf(
'lang(%s)',
Translator::getXpathLiteral($arguments[0]->getValue())
));
}
/**
* {@inheritdoc}
*/
public function getName(): string
{
return 'function';
}
}
TranslatorInterface.php 0000644 00000001773 15152054436 0011244 0 ustar 00 <?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\CssSelector\XPath;
use Symfony\Component\CssSelector\Node\SelectorNode;
/**
* XPath expression translator interface.
*
* This component is a port of the Python cssselect library,
* which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
*
* @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
*
* @internal
*/
interface TranslatorInterface
{
/**
* Translates a CSS selector to an XPath expression.
*/
public function cssToXPath(string $cssExpr, string $prefix = 'descendant-or-self::'): string;
/**
* Translates a parsed selector node to an XPath expression.
*/
public function selectorToXPath(SelectorNode $selector, string $prefix = 'descendant-or-self::'): string;
}
XPathExpr.php 0000644 00000004511 15152054436 0007146 0 ustar 00 <?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\CssSelector\XPath;
/**
* XPath expression translator interface.
*
* This component is a port of the Python cssselect library,
* which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
*
* @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
*
* @internal
*/
class XPathExpr
{
private $path;
private $element;
private $condition;
public function __construct(string $path = '', string $element = '*', string $condition = '', bool $starPrefix = false)
{
$this->path = $path;
$this->element = $element;
$this->condition = $condition;
if ($starPrefix) {
$this->addStarPrefix();
}
}
public function getElement(): string
{
return $this->element;
}
public function addCondition(string $condition): self
{
$this->condition = $this->condition ? sprintf('(%s) and (%s)', $this->condition, $condition) : $condition;
return $this;
}
public function getCondition(): string
{
return $this->condition;
}
public function addNameTest(): self
{
if ('*' !== $this->element) {
$this->addCondition('name() = '.Translator::getXpathLiteral($this->element));
$this->element = '*';
}
return $this;
}
public function addStarPrefix(): self
{
$this->path .= '*/';
return $this;
}
/**
* Joins another XPathExpr with a combiner.
*
* @return $this
*/
public function join(string $combiner, self $expr): self
{
$path = $this->__toString().$combiner;
if ('*/' !== $expr->path) {
$path .= $expr->path;
}
$this->path = $path;
$this->element = $expr->element;
$this->condition = $expr->condition;
return $this;
}
public function __toString(): string
{
$path = $this->path.$this->element;
$condition = null === $this->condition || '' === $this->condition ? '' : '['.$this->condition.']';
return $path.$condition;
}
}
Translator.php 0000644 00000016227 15152054436 0007423 0 ustar 00 <?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\CssSelector\XPath;
use Symfony\Component\CssSelector\Exception\ExpressionErrorException;
use Symfony\Component\CssSelector\Node\FunctionNode;
use Symfony\Component\CssSelector\Node\NodeInterface;
use Symfony\Component\CssSelector\Node\SelectorNode;
use Symfony\Component\CssSelector\Parser\Parser;
use Symfony\Component\CssSelector\Parser\ParserInterface;
/**
* XPath expression translator interface.
*
* This component is a port of the Python cssselect library,
* which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
*
* @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
*
* @internal
*/
class Translator implements TranslatorInterface
{
private $mainParser;
/**
* @var ParserInterface[]
*/
private $shortcutParsers = [];
/**
* @var Extension\ExtensionInterface[]
*/
private $extensions = [];
private $nodeTranslators = [];
private $combinationTranslators = [];
private $functionTranslators = [];
private $pseudoClassTranslators = [];
private $attributeMatchingTranslators = [];
public function __construct(ParserInterface $parser = null)
{
$this->mainParser = $parser ?? new Parser();
$this
->registerExtension(new Extension\NodeExtension())
->registerExtension(new Extension\CombinationExtension())
->registerExtension(new Extension\FunctionExtension())
->registerExtension(new Extension\PseudoClassExtension())
->registerExtension(new Extension\AttributeMatchingExtension())
;
}
public static function getXpathLiteral(string $element): string
{
if (!str_contains($element, "'")) {
return "'".$element."'";
}
if (!str_contains($element, '"')) {
return '"'.$element.'"';
}
$string = $element;
$parts = [];
while (true) {
if (false !== $pos = strpos($string, "'")) {
$parts[] = sprintf("'%s'", substr($string, 0, $pos));
$parts[] = "\"'\"";
$string = substr($string, $pos + 1);
} else {
$parts[] = "'$string'";
break;
}
}
return sprintf('concat(%s)', implode(', ', $parts));
}
/**
* {@inheritdoc}
*/
public function cssToXPath(string $cssExpr, string $prefix = 'descendant-or-self::'): string
{
$selectors = $this->parseSelectors($cssExpr);
/** @var SelectorNode $selector */
foreach ($selectors as $index => $selector) {
if (null !== $selector->getPseudoElement()) {
throw new ExpressionErrorException('Pseudo-elements are not supported.');
}
$selectors[$index] = $this->selectorToXPath($selector, $prefix);
}
return implode(' | ', $selectors);
}
/**
* {@inheritdoc}
*/
public function selectorToXPath(SelectorNode $selector, string $prefix = 'descendant-or-self::'): string
{
return ($prefix ?: '').$this->nodeToXPath($selector);
}
/**
* @return $this
*/
public function registerExtension(Extension\ExtensionInterface $extension): self
{
$this->extensions[$extension->getName()] = $extension;
$this->nodeTranslators = array_merge($this->nodeTranslators, $extension->getNodeTranslators());
$this->combinationTranslators = array_merge($this->combinationTranslators, $extension->getCombinationTranslators());
$this->functionTranslators = array_merge($this->functionTranslators, $extension->getFunctionTranslators());
$this->pseudoClassTranslators = array_merge($this->pseudoClassTranslators, $extension->getPseudoClassTranslators());
$this->attributeMatchingTranslators = array_merge($this->attributeMatchingTranslators, $extension->getAttributeMatchingTranslators());
return $this;
}
/**
* @throws ExpressionErrorException
*/
public function getExtension(string $name): Extension\ExtensionInterface
{
if (!isset($this->extensions[$name])) {
throw new ExpressionErrorException(sprintf('Extension "%s" not registered.', $name));
}
return $this->extensions[$name];
}
/**
* @return $this
*/
public function registerParserShortcut(ParserInterface $shortcut): self
{
$this->shortcutParsers[] = $shortcut;
return $this;
}
/**
* @throws ExpressionErrorException
*/
public function nodeToXPath(NodeInterface $node): XPathExpr
{
if (!isset($this->nodeTranslators[$node->getNodeName()])) {
throw new ExpressionErrorException(sprintf('Node "%s" not supported.', $node->getNodeName()));
}
return $this->nodeTranslators[$node->getNodeName()]($node, $this);
}
/**
* @throws ExpressionErrorException
*/
public function addCombination(string $combiner, NodeInterface $xpath, NodeInterface $combinedXpath): XPathExpr
{
if (!isset($this->combinationTranslators[$combiner])) {
throw new ExpressionErrorException(sprintf('Combiner "%s" not supported.', $combiner));
}
return $this->combinationTranslators[$combiner]($this->nodeToXPath($xpath), $this->nodeToXPath($combinedXpath));
}
/**
* @throws ExpressionErrorException
*/
public function addFunction(XPathExpr $xpath, FunctionNode $function): XPathExpr
{
if (!isset($this->functionTranslators[$function->getName()])) {
throw new ExpressionErrorException(sprintf('Function "%s" not supported.', $function->getName()));
}
return $this->functionTranslators[$function->getName()]($xpath, $function);
}
/**
* @throws ExpressionErrorException
*/
public function addPseudoClass(XPathExpr $xpath, string $pseudoClass): XPathExpr
{
if (!isset($this->pseudoClassTranslators[$pseudoClass])) {
throw new ExpressionErrorException(sprintf('Pseudo-class "%s" not supported.', $pseudoClass));
}
return $this->pseudoClassTranslators[$pseudoClass]($xpath);
}
/**
* @throws ExpressionErrorException
*/
public function addAttributeMatching(XPathExpr $xpath, string $operator, string $attribute, $value): XPathExpr
{
if (!isset($this->attributeMatchingTranslators[$operator])) {
throw new ExpressionErrorException(sprintf('Attribute matcher operator "%s" not supported.', $operator));
}
return $this->attributeMatchingTranslators[$operator]($xpath, $attribute, $value);
}
/**
* @return SelectorNode[]
*/
private function parseSelectors(string $css): array
{
foreach ($this->shortcutParsers as $shortcut) {
$tokens = $shortcut->parse($css);
if (!empty($tokens)) {
return $tokens;
}
}
return $this->mainParser->parse($css);
}
}
