:arrow_up: Update HTML Purifier library.

Updated HTML Purifier from 4.6.0 to 4.9.2 with better PHP7 compatibility.
Used composer to manage this library.

1 files changed, 324 insertions, 0 deletions

diff --git a/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Printer/HTMLDefinition.php b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Printer/HTMLDefinition.php
new file mode 100644
index 000000000..5f2f2f8a7
--- /dev/null
+++ b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Printer/HTMLDefinition.php
@@ -0,0 +1,324 @@
+<?php
+
+class HTMLPurifier_Printer_HTMLDefinition extends HTMLPurifier_Printer
+{
+
+    /**
+     * @type HTMLPurifier_HTMLDefinition, for easy access
+     */
+    protected $def;
+
+    /**
+     * @param HTMLPurifier_Config $config
+     * @return string
+     */
+    public function render($config)
+    {
+        $ret = '';
+        $this->config =& $config;
+
+        $this->def = $config->getHTMLDefinition();
+
+        $ret .= $this->start('div', array('class' => 'HTMLPurifier_Printer'));
+
+        $ret .= $this->renderDoctype();
+        $ret .= $this->renderEnvironment();
+        $ret .= $this->renderContentSets();
+        $ret .= $this->renderInfo();
+
+        $ret .= $this->end('div');
+
+        return $ret;
+    }
+
+    /**
+     * Renders the Doctype table
+     * @return string
+     */
+    protected function renderDoctype()
+    {
+        $doctype = $this->def->doctype;
+        $ret = '';
+        $ret .= $this->start('table');
+        $ret .= $this->element('caption', 'Doctype');
+        $ret .= $this->row('Name', $doctype->name);
+        $ret .= $this->row('XML', $doctype->xml ? 'Yes' : 'No');
+        $ret .= $this->row('Default Modules', implode($doctype->modules, ', '));
+        $ret .= $this->row('Default Tidy Modules', implode($doctype->tidyModules, ', '));
+        $ret .= $this->end('table');
+        return $ret;
+    }
+
+
+    /**
+     * Renders environment table, which is miscellaneous info
+     * @return string
+     */
+    protected function renderEnvironment()
+    {
+        $def = $this->def;
+
+        $ret = '';
+
+        $ret .= $this->start('table');
+        $ret .= $this->element('caption', 'Environment');
+
+        $ret .= $this->row('Parent of fragment', $def->info_parent);
+        $ret .= $this->renderChildren($def->info_parent_def->child);
+        $ret .= $this->row('Block wrap name', $def->info_block_wrapper);
+
+        $ret .= $this->start('tr');
+        $ret .= $this->element('th', 'Global attributes');
+        $ret .= $this->element('td', $this->listifyAttr($def->info_global_attr), null, 0);
+        $ret .= $this->end('tr');
+
+        $ret .= $this->start('tr');
+        $ret .= $this->element('th', 'Tag transforms');
+        $list = array();
+        foreach ($def->info_tag_transform as $old => $new) {
+            $new = $this->getClass($new, 'TagTransform_');
+            $list[] = "<$old> with $new";
+        }
+        $ret .= $this->element('td', $this->listify($list));
+        $ret .= $this->end('tr');
+
+        $ret .= $this->start('tr');
+        $ret .= $this->element('th', 'Pre-AttrTransform');
+        $ret .= $this->element('td', $this->listifyObjectList($def->info_attr_transform_pre));
+        $ret .= $this->end('tr');
+
+        $ret .= $this->start('tr');
+        $ret .= $this->element('th', 'Post-AttrTransform');
+        $ret .= $this->element('td', $this->listifyObjectList($def->info_attr_transform_post));
+        $ret .= $this->end('tr');
+
+        $ret .= $this->end('table');
+        return $ret;
+    }
+
+    /**
+     * Renders the Content Sets table
+     * @return string
+     */
+    protected function renderContentSets()
+    {
+        $ret = '';
+        $ret .= $this->start('table');
+        $ret .= $this->element('caption', 'Content Sets');
+        foreach ($this->def->info_content_sets as $name => $lookup) {
+            $ret .= $this->heavyHeader($name);
+            $ret .= $this->start('tr');
+            $ret .= $this->element('td', $this->listifyTagLookup($lookup));
+            $ret .= $this->end('tr');
+        }
+        $ret .= $this->end('table');
+        return $ret;
+    }
+
+    /**
+     * Renders the Elements ($info) table
+     * @return string
+     */
+    protected function renderInfo()
+    {
+        $ret = '';
+        $ret .= $this->start('table');
+        $ret .= $this->element('caption', 'Elements ($info)');
+        ksort($this->def->info);
+        $ret .= $this->heavyHeader('Allowed tags', 2);
+        $ret .= $this->start('tr');
+        $ret .= $this->element('td', $this->listifyTagLookup($this->def->info), array('colspan' => 2));
+        $ret .= $this->end('tr');
+        foreach ($this->def->info as $name => $def) {
+            $ret .= $this->start('tr');
+            $ret .= $this->element('th', "<$name>", array('class' => 'heavy', 'colspan' => 2));
+            $ret .= $this->end('tr');
+            $ret .= $this->start('tr');
+            $ret .= $this->element('th', 'Inline content');
+            $ret .= $this->element('td', $def->descendants_are_inline ? 'Yes' : 'No');
+            $ret .= $this->end('tr');
+            if (!empty($def->excludes)) {
+                $ret .= $this->start('tr');
+                $ret .= $this->element('th', 'Excludes');
+                $ret .= $this->element('td', $this->listifyTagLookup($def->excludes));
+                $ret .= $this->end('tr');
+            }
+            if (!empty($def->attr_transform_pre)) {
+                $ret .= $this->start('tr');
+                $ret .= $this->element('th', 'Pre-AttrTransform');
+                $ret .= $this->element('td', $this->listifyObjectList($def->attr_transform_pre));
+                $ret .= $this->end('tr');
+            }
+            if (!empty($def->attr_transform_post)) {
+                $ret .= $this->start('tr');
+                $ret .= $this->element('th', 'Post-AttrTransform');
+                $ret .= $this->element('td', $this->listifyObjectList($def->attr_transform_post));
+                $ret .= $this->end('tr');
+            }
+            if (!empty($def->auto_close)) {
+                $ret .= $this->start('tr');
+                $ret .= $this->element('th', 'Auto closed by');
+                $ret .= $this->element('td', $this->listifyTagLookup($def->auto_close));
+                $ret .= $this->end('tr');
+            }
+            $ret .= $this->start('tr');
+            $ret .= $this->element('th', 'Allowed attributes');
+            $ret .= $this->element('td', $this->listifyAttr($def->attr), array(), 0);
+            $ret .= $this->end('tr');
+
+            if (!empty($def->required_attr)) {
+                $ret .= $this->row('Required attributes', $this->listify($def->required_attr));
+            }
+
+            $ret .= $this->renderChildren($def->child);
+        }
+        $ret .= $this->end('table');
+        return $ret;
+    }
+
+    /**
+     * Renders a row describing the allowed children of an element
+     * @param HTMLPurifier_ChildDef $def HTMLPurifier_ChildDef of pertinent element
+     * @return string
+     */
+    protected function renderChildren($def)
+    {
+        $context = new HTMLPurifier_Context();
+        $ret = '';
+        $ret .= $this->start('tr');
+        $elements = array();
+        $attr = array();
+        if (isset($def->elements)) {
+            if ($def->type == 'strictblockquote') {
+                $def->validateChildren(array(), $this->config, $context);
+            }
+            $elements = $def->elements;
+        }
+        if ($def->type == 'chameleon') {
+            $attr['rowspan'] = 2;
+        } elseif ($def->type == 'empty') {
+            $elements = array();
+        } elseif ($def->type == 'table') {
+            $elements = array_flip(
+                array(
+                    'col',
+                    'caption',
+                    'colgroup',
+                    'thead',
+                    'tfoot',
+                    'tbody',
+                    'tr'
+                )
+            );
+        }
+        $ret .= $this->element('th', 'Allowed children', $attr);
+
+        if ($def->type == 'chameleon') {
+
+            $ret .= $this->element(
+                'td',
+                '<em>Block</em>: ' .
+                $this->escape($this->listifyTagLookup($def->block->elements)),
+                null,
+                0
+            );
+            $ret .= $this->end('tr');
+            $ret .= $this->start('tr');
+            $ret .= $this->element(
+                'td',
+                '<em>Inline</em>: ' .
+                $this->escape($this->listifyTagLookup($def->inline->elements)),
+                null,
+                0
+            );
+
+        } elseif ($def->type == 'custom') {
+
+            $ret .= $this->element(
+                'td',
+                '<em>' . ucfirst($def->type) . '</em>: ' .
+                $def->dtd_regex
+            );
+
+        } else {
+            $ret .= $this->element(
+                'td',
+                '<em>' . ucfirst($def->type) . '</em>: ' .
+                $this->escape($this->listifyTagLookup($elements)),
+                null,
+                0
+            );
+        }
+        $ret .= $this->end('tr');
+        return $ret;
+    }
+
+    /**
+     * Listifies a tag lookup table.
+     * @param array $array Tag lookup array in form of array('tagname' => true)
+     * @return string
+     */
+    protected function listifyTagLookup($array)
+    {
+        ksort($array);
+        $list = array();
+        foreach ($array as $name => $discard) {
+            if ($name !== '#PCDATA' && !isset($this->def->info[$name])) {
+                continue;
+            }
+            $list[] = $name;
+        }
+        return $this->listify($list);
+    }
+
+    /**
+     * Listifies a list of objects by retrieving class names and internal state
+     * @param array $array List of objects
+     * @return string
+     * @todo Also add information about internal state
+     */
+    protected function listifyObjectList($array)
+    {
+        ksort($array);
+        $list = array();
+        foreach ($array as $obj) {
+            $list[] = $this->getClass($obj, 'AttrTransform_');
+        }
+        return $this->listify($list);
+    }
+
+    /**
+     * Listifies a hash of attributes to AttrDef classes
+     * @param array $array Array hash in form of array('attrname' => HTMLPurifier_AttrDef)
+     * @return string
+     */
+    protected function listifyAttr($array)
+    {
+        ksort($array);
+        $list = array();
+        foreach ($array as $name => $obj) {
+            if ($obj === false) {
+                continue;
+            }
+            $list[] = "$name&nbsp;=&nbsp;<i>" . $this->getClass($obj, 'AttrDef_') . '</i>';
+        }
+        return $this->listify($list);
+    }
+
+    /**
+     * Creates a heavy header row
+     * @param string $text
+     * @param int $num
+     * @return string
+     */
+    protected function heavyHeader($text, $num = 1)
+    {
+        $ret = '';
+        $ret .= $this->start('tr');
+        $ret .= $this->element('th', $text, array('colspan' => $num, 'class' => 'heavy'));
+        $ret .= $this->end('tr');
+        return $ret;
+    }
+}
+
+// vim: et sw=4 sts=4