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[DomCrawler] Enabled default namespace prefix overloading.

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This commit is contained in:
Jakub Zalas 2013-09-18 13:18:44 +01:00
parent 943d446e61
commit be1e4e6585
2 changed files with 27 additions and 2 deletions
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19
src/Symfony/Component/DomCrawler/Crawler.php
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@ -27,6 +27,11 @@ class Crawler extends \SplObjectStorage
*/ */
protected $uri; protected $uri;
/**
* @var string The default namespace prefix to be used with XPath and CSS expressions
*/
private $defaultNamespacePrefix = 'default';
/** /**
* Constructor. * Constructor.
* *
@ -708,6 +713,16 @@ class Crawler extends \SplObjectStorage
return $form; return $form;
} }
/**
* Overloads a default namespace prefix to be used with XPath and CSS expressions.
*
* @param string $prefix
*/
public function setDefaultNamespacePrefix($prefix)
{
$this->defaultNamespacePrefix = $prefix;
}
/** /**
* Converts string for XPath expressions. * Converts string for XPath expressions.
* *
@ -806,7 +821,7 @@ class Crawler extends \SplObjectStorage
foreach ($prefixes as $prefix) { foreach ($prefixes as $prefix) {
// ask for one namespace, otherwise we'd get a collection with an item for each node // ask for one namespace, otherwise we'd get a collection with an item for each node
$namespaces = $domxpath->query(sprintf('(//namespace::*[name()="%s"])[last()]', 'default' === $prefix ? '' : $prefix)); $namespaces = $domxpath->query(sprintf('(//namespace::*[name()="%s"])[last()]', $this->defaultNamespacePrefix === $prefix ? '' : $prefix));
if ($node = $namespaces->item(0)) { if ($node = $namespaces->item(0)) {
$domxpath->registerNamespace($prefix, $node->nodeValue); $domxpath->registerNamespace($prefix, $node->nodeValue);
} else { } else {
@ -824,7 +839,7 @@ class Crawler extends \SplObjectStorage
*/ */
private function findNamespacePrefixes($xpath) private function findNamespacePrefixes($xpath)
{ {
if (preg_match_all('/(?P<prefix>[a-zA-Z_][a-zA-Z_0-9\-\.]+):[^:]/', $xpath, $matches)) { if (preg_match_all('/(?P<prefix>[a-zA-Z_][a-zA-Z_0-9\-\.]*):[^:]/', $xpath, $matches)) {
return array_unique($matches['prefix']); return array_unique($matches['prefix']);
} }

10
src/Symfony/Component/DomCrawler/Tests/CrawlerTest.php
View File

@ -378,6 +378,16 @@ EOF
$this->assertSame('tag:youtube.com,2008:video:kgZRZmEc9j4', $crawler->text()); $this->assertSame('tag:youtube.com,2008:video:kgZRZmEc9j4', $crawler->text());
} }
public function testFilterXPathWithCustomDefaultNamespace()
{
$crawler = $this->createTestXmlCrawler();
$crawler->setDefaultNamespacePrefix('x');
$crawler = $crawler->filterXPath('//x:entry/x:id');
$this->assertCount(1, $crawler, '->filterXPath() automatically registers a namespace');
$this->assertSame('tag:youtube.com,2008:video:kgZRZmEc9j4', $crawler->text());
}
public function testFilterXPathWithNamespace() public function testFilterXPathWithNamespace()
{ {
$crawler = $this->createTestXmlCrawler()->filterXPath('//yt:accessControl'); $crawler = $this->createTestXmlCrawler()->filterXPath('//yt:accessControl');