diff -r 000000000000 -r 7f95f8617b0b vendor/symfony/src/Symfony/Component/CssSelector/Node/AttribNode.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/symfony/src/Symfony/Component/CssSelector/Node/AttribNode.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,131 @@
+<?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\Node;
+
+use Symfony\Component\CssSelector\XPathExpr;
+use Symfony\Component\CssSelector\Exception\ParseException;
+
+/**
+ * AttribNode represents a "selector[namespace|attrib operator value]" node.
+ *
+ * This component is a port of the Python lxml library,
+ * which is copyright Infrae and distributed under the BSD license.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class AttribNode implements NodeInterface
+{
+    protected $selector;
+    protected $namespace;
+    protected $attrib;
+    protected $operator;
+    protected $value;
+
+    /**
+     * Constructor.
+     *
+     * @param NodeInterface $selector The XPath selector
+     * @param string $namespace The namespace
+     * @param string $attrib The attribute
+     * @param string $operator The operator
+     * @param string $value The value
+     */
+    public function __construct($selector, $namespace, $attrib, $operator, $value)
+    {
+        $this->selector = $selector;
+        $this->namespace = $namespace;
+        $this->attrib = $attrib;
+        $this->operator = $operator;
+        $this->value = $value;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function __toString()
+    {
+        if ($this->operator == 'exists') {
+            return sprintf('%s[%s[%s]]', __CLASS__, $this->selector, $this->formatAttrib());
+        }
+
+        return sprintf('%s[%s[%s %s %s]]', __CLASS__, $this->selector, $this->formatAttrib(), $this->operator, $this->value);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function toXpath()
+    {
+        $path = $this->selector->toXpath();
+        $attrib = $this->xpathAttrib();
+        $value = $this->value;
+        if ($this->operator == 'exists') {
+            $path->addCondition($attrib);
+        } elseif ($this->operator == '=') {
+            $path->addCondition(sprintf('%s = %s', $attrib, XPathExpr::xpathLiteral($value)));
+        } elseif ($this->operator == '!=') {
+            // FIXME: this seems like a weird hack...
+            if ($value) {
+                $path->addCondition(sprintf('not(%s) or %s != %s', $attrib, $attrib, XPathExpr::xpathLiteral($value)));
+            } else {
+                $path->addCondition(sprintf('%s != %s', $attrib, XPathExpr::xpathLiteral($value)));
+            }
+            // path.addCondition('%s != %s' % (attrib, xpathLiteral(value)))
+        } elseif ($this->operator == '~=') {
+            $path->addCondition(sprintf("contains(concat(' ', normalize-space(%s), ' '), %s)", $attrib, XPathExpr::xpathLiteral(' '.$value.' ')));
+        } elseif ($this->operator == '|=') {
+            // Weird, but true...
+            $path->addCondition(sprintf('%s = %s or starts-with(%s, %s)', $attrib, XPathExpr::xpathLiteral($value), $attrib, XPathExpr::xpathLiteral($value.'-')));
+        } elseif ($this->operator == '^=') {
+            $path->addCondition(sprintf('starts-with(%s, %s)', $attrib, XPathExpr::xpathLiteral($value)));
+        } elseif ($this->operator == '$=') {
+            // Oddly there is a starts-with in XPath 1.0, but not ends-with
+            $path->addCondition(sprintf('substring(%s, string-length(%s)-%s) = %s', $attrib, $attrib, strlen($value) - 1, XPathExpr::xpathLiteral($value)));
+        } elseif ($this->operator == '*=') {
+            // FIXME: case sensitive?
+            $path->addCondition(sprintf('contains(%s, %s)', $attrib, XPathExpr::xpathLiteral($value)));
+        } else {
+            throw new ParseException(sprintf('Unknown operator: %s', $this->operator));
+        }
+
+        return $path;
+    }
+
+    /**
+     * Returns the XPath Attribute
+     *
+     * @return string The XPath attribute
+     */
+    protected function xpathAttrib()
+    {
+        // FIXME: if attrib is *?
+        if ($this->namespace == '*') {
+            return '@'.$this->attrib;
+        }
+
+        return sprintf('@%s:%s', $this->namespace, $this->attrib);
+    }
+
+    /**
+     * Returns a formatted attribute
+     *
+     * @return string The formatted attribute
+     */
+    protected function formatAttrib()
+    {
+        if ($this->namespace == '*') {
+            return $this->attrib;
+        }
+
+        return sprintf('%s|%s', $this->namespace, $this->attrib);
+    }
+}