remove autoload section in composer.json

[github/wallabag/wallabag.git] / inc / 3rdparty / htmlpurifier / HTMLPurifier / URIFilter / MakeAbsolute.php

<?php\r
\r
// does not support network paths\r
\r
class HTMLPurifier_URIFilter_MakeAbsolute extends HTMLPurifier_URIFilter\r
{\r
    /**\r
     * @type string\r
     */\r
    public $name = 'MakeAbsolute';\r
\r
    /**\r
     * @type\r
     */\r
    protected $base;\r
\r
    /**\r
     * @type array\r
     */\r
    protected $basePathStack = array();\r
\r
    /**\r
     * @param HTMLPurifier_Config $config\r
     * @return bool\r
     */\r
    public function prepare($config)\r
    {\r
        $def = $config->getDefinition('URI');\r
        $this->base = $def->base;\r
        if (is_null($this->base)) {\r
            trigger_error(\r
                'URI.MakeAbsolute is being ignored due to lack of ' .\r
                'value for URI.Base configuration',\r
                E_USER_WARNING\r
            );\r
            return false;\r
        }\r
        $this->base->fragment = null; // fragment is invalid for base URI\r
        $stack = explode('/', $this->base->path);\r
        array_pop($stack); // discard last segment\r
        $stack = $this->_collapseStack($stack); // do pre-parsing\r
        $this->basePathStack = $stack;\r
        return true;\r
    }\r
\r
    /**\r
     * @param HTMLPurifier_URI $uri\r
     * @param HTMLPurifier_Config $config\r
     * @param HTMLPurifier_Context $context\r
     * @return bool\r
     */\r
    public function filter(&$uri, $config, $context)\r
    {\r
        if (is_null($this->base)) {\r
            return true;\r
        } // abort early\r
        if ($uri->path === '' && is_null($uri->scheme) &&\r
            is_null($uri->host) && is_null($uri->query) && is_null($uri->fragment)) {\r
            // reference to current document\r
            $uri = clone $this->base;\r
            return true;\r
        }\r
        if (!is_null($uri->scheme)) {\r
            // absolute URI already: don't change\r
            if (!is_null($uri->host)) {\r
                return true;\r
            }\r
            $scheme_obj = $uri->getSchemeObj($config, $context);\r
            if (!$scheme_obj) {\r
                // scheme not recognized\r
                return false;\r
            }\r
            if (!$scheme_obj->hierarchical) {\r
                // non-hierarchal URI with explicit scheme, don't change\r
                return true;\r
            }\r
            // special case: had a scheme but always is hierarchical and had no authority\r
        }\r
        if (!is_null($uri->host)) {\r
            // network path, don't bother\r
            return true;\r
        }\r
        if ($uri->path === '') {\r
            $uri->path = $this->base->path;\r
        } elseif ($uri->path[0] !== '/') {\r
            // relative path, needs more complicated processing\r
            $stack = explode('/', $uri->path);\r
            $new_stack = array_merge($this->basePathStack, $stack);\r
            if ($new_stack[0] !== '' && !is_null($this->base->host)) {\r
                array_unshift($new_stack, '');\r
            }\r
            $new_stack = $this->_collapseStack($new_stack);\r
            $uri->path = implode('/', $new_stack);\r
        } else {\r
            // absolute path, but still we should collapse\r
            $uri->path = implode('/', $this->_collapseStack(explode('/', $uri->path)));\r
        }\r
        // re-combine\r
        $uri->scheme = $this->base->scheme;\r
        if (is_null($uri->userinfo)) {\r
            $uri->userinfo = $this->base->userinfo;\r
        }\r
        if (is_null($uri->host)) {\r
            $uri->host = $this->base->host;\r
        }\r
        if (is_null($uri->port)) {\r
            $uri->port = $this->base->port;\r
        }\r
        return true;\r
    }\r
\r
    /**\r
     * Resolve dots and double-dots in a path stack\r
     * @param array $stack\r
     * @return array\r
     */\r
    private function _collapseStack($stack)\r
    {\r
        $result = array();\r
        $is_folder = false;\r
        for ($i = 0; isset($stack[$i]); $i++) {\r
            $is_folder = false;\r
            // absorb an internally duplicated slash\r
            if ($stack[$i] == '' && $i && isset($stack[$i + 1])) {\r
                continue;\r
            }\r
            if ($stack[$i] == '..') {\r
                if (!empty($result)) {\r
                    $segment = array_pop($result);\r
                    if ($segment === '' && empty($result)) {\r
                        // error case: attempted to back out too far:\r
                        // restore the leading slash\r
                        $result[] = '';\r
                    } elseif ($segment === '..') {\r
                        $result[] = '..'; // cannot remove .. with ..\r
                    }\r
                } else {\r
                    // relative path, preserve the double-dots\r
                    $result[] = '..';\r
                }\r
                $is_folder = true;\r
                continue;\r
            }\r
            if ($stack[$i] == '.') {\r
                // silently absorb\r
                $is_folder = true;\r
                continue;\r
            }\r
            $result[] = $stack[$i];\r
        }\r
        if ($is_folder) {\r
            $result[] = '';\r
        }\r
        return $result;\r
    }\r
}\r
\r
// vim: et sw=4 sts=4\r