Crawler default namespace fix

src/Symfony/Component/DomCrawler/CHANGELOG.md

@@ -3,7 +3,8 @@ CHANGELOG
 
 2.4.0
 -----
-
+ 
+ * `Crawler::addXmlContent()` removes the default document namespace again if it's an only namespace.
  * added support for automatic discovery and explicit registration of document
    namespaces for `Crawler::filterXPath()` and `Crawler::filter()`
  * improved content type guessing in `Crawler::addContent()`

src/Symfony/Component/DomCrawler/Crawler.php

@@ -200,6 +200,11 @@ class Crawler extends \SplObjectStorage
      */
     public function addXmlContent($content, $charset = 'UTF-8')
     {
+        // remove the default namespace if it's the only namespace to make XPath expressions simpler
+        if (!preg_match('/xmlns:/', $content)) {
+            $content = str_replace('xmlns', 'ns', $content);
+        }
+
         $current = libxml_use_internal_errors(true);
         $disableEntities = libxml_disable_entity_loader(true);
 

src/Symfony/Component/DomCrawler/Tests/CrawlerTest.php

@@ -469,6 +469,28 @@ EOF
         $this->assertSame('widescreen', $crawler->text());
     }
 
+    public function testFilterWithDefaultNamespaceOnly()
+    {
+        $crawler = new Crawler('<?xml version="1.0" encoding="UTF-8"?>
+        <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+            <url>
+                <loc>http://localhost/foo</loc>
+                <changefreq>weekly</changefreq>
+                <priority>0.5</priority>
+                <lastmod>2012-11-16</lastmod>
+           </url>
+           <url>
+                <loc>http://localhost/bar</loc>
+                <changefreq>weekly</changefreq>
+                <priority>0.5</priority>
+                <lastmod>2012-11-16</lastmod>
+            </url>
+        </urlset>
+        ');
+
+        $this->assertEquals(2, $crawler->filter('url')->count());
+    }
+
     public function testSelectLink()
     {
         $crawler = $this->createTestCrawler();