2 files changed, 173 insertions, 0 deletions
diff --git a/vendor/fguillot/picofeed b/vendor/fguillot/picofeed
deleted file mode 160000
-Subproject 0a1d0d3950f7f047dc8fb1d80aa6296e15f306d
diff --git a/vendor/fguillot/picofeed/lib/PicoFeed/Filter/Tag.php b/vendor/fguillot/picofeed/lib/PicoFeed/Filter/Tag.php
new file mode 100644
index 000000000..40f7c6c98
--- /dev/null
+++ b/vendor/fguillot/picofeed/lib/PicoFeed/Filter/Tag.php
@@ -0,0 +1,173 @@
+<?php
+
+namespace PicoFeed\Filter;
+
+/**
+ * Tag Filter class
+ *
+ * @author  Frederic Guillot
+ * @package Filter
+ */
+class Tag
+{
+    /**
+     * Tags whitelist
+     *
+     * @access private
+     * @var array
+     */
+    private $tag_whitelist = array(
+        'audio',
+        'video',
+        'source',
+        'dt',
+        'dd',
+        'dl',
+        'table',
+        'caption',
+        'tr',
+        'th',
+        'td',
+        'tbody',
+        'thead',
+        'h2',
+        'h3',
+        'h4',
+        'h5',
+        'h6',
+        'strong',
+        'em',
+        'code',
+        'pre',
+        'blockquote',
+        'p',
+        'ul',
+        'li',
+        'ol',
+        'br',
+        'del',
+        'a',
+        'img',
+        'figure',
+        'figcaption',
+        'cite',
+        'time',
+        'abbr',
+        'iframe',
+        'q',
+    );
+
+    /**
+     * Check if the tag is allowed and is not a pixel tracker
+     *
+     * @access public
+     * @param  string    $tag           Tag name
+     * @param  array     $attributes    Attributes dictionary
+     * @return boolean
+     */
+    public function isAllowed($tag, array $attributes)
+    {
+        return $this->isAllowedTag($tag) && ! $this->isPixelTracker($tag, $attributes);
+    }
+
+    /**
+     * Return the HTML opening tag
+     *
+     * @access public
+     * @param  string    $tag           Tag name
+     * @param  string    $attributes    Attributes converted in html
+     * @return string
+     */
+    public function openHtmlTag($tag, $attributes = '')
+    {
+        return '<'.$tag.(empty($attributes) ? '' : ' '.$attributes).($this->isSelfClosingTag($tag) ? '/>' : '>');
+    }
+
+    /**
+     * Return the HTML closing tag
+     *
+     * @access public
+     * @param  string    $tag           Tag name
+     * @return string
+     */
+    public function closeHtmlTag($tag)
+    {
+        return $this->isSelfClosingTag($tag) ? '' : '</'.$tag.'>';
+    }
+
+    /**
+     * Return true is the tag is self-closing
+     *
+     * @access public
+     * @param  string    $tag           Tag name
+     * @return boolean
+     */
+    public function isSelfClosingTag($tag)
+    {
+        return in_array($tag, array('br', 'img'));
+    }
+
+    /**
+     * Check if a tag is on the whitelist
+     *
+     * @access public
+     * @param  string     $tag    Tag name
+     * @return boolean
+     */
+    public function isAllowedTag($tag)
+    {
+        return in_array($tag, $this->tag_whitelist);
+    }
+
+    /**
+     * Detect if an image tag is a pixel tracker
+     *
+     * @access public
+     * @param  string  $tag         Tag name
+     * @param  array   $attributes  Tag attributes
+     * @return boolean
+     */
+    public function isPixelTracker($tag, array $attributes)
+    {
+        return $tag === 'img' &&
+                isset($attributes['height']) && isset($attributes['width']) &&
+                $attributes['height'] == 1 && $attributes['width'] == 1;
+    }
+
+    /**
+     * Remove empty tags
+     *
+     * @access public
+     * @param  string  $data  Input data
+     * @return string
+     */
+    public function removeEmptyTags($data)
+    {
+        return preg_replace('/<([^<\/>]*)>([\s]*?|(?R))<\/\1>/imsU', '', $data);
+    }
+
+    /**
+     * Replace <br/><br/> by only one
+     *
+     * @access public
+     * @param  string  $data  Input data
+     * @return string
+     */
+    public function removeMultipleTags($data)
+    {
+        return preg_replace("/(<br\s*\/?>\s*)+/", "<br/>", $data);
+    }
+
+    /**
+     * Set whitelisted tags adn attributes for each tag
+     *
+     * @access public
+     * @param  array   $values   List of tags: ['video' => ['src', 'cover'], 'img' => ['src']]
+     * @return Tag
+     */
+    public function setWhitelistedTags(array $values)
+    {
+        $this->tag_whitelist = $values ?: $this->tag_whitelist;
+        return $this;
+    }
+}