Sniffer::get_type(): string

85    public function get_type()86    {87        if (isset($this->file->headers['content-type'])) {88            if (!isset($this->file->headers['content-encoding'])89                && ($this->file->headers['content-type'] === 'text/plain'90                    || $this->file->headers['content-type'] === 'text/plain; charset=ISO-8859-1'91                    || $this->file->headers['content-type'] === 'text/plain; charset=iso-8859-1'92                    || $this->file->headers['content-type'] === 'text/plain; charset=UTF-8')) {93                return $this->text_or_binary();94            }95 96            if (($pos = strpos($this->file->headers['content-type'], ';')) !== false) {97                $official = substr($this->file->headers['content-type'], 0, $pos);98            } else {99                $official = $this->file->headers['content-type'];100            }101            $official = trim(strtolower($official));102 103            if ($official === 'unknown/unknown'104                || $official === 'application/unknown') {105                return $this->unknown();106            } elseif (substr($official, -4) === '+xml'107                || $official === 'text/xml'108                || $official === 'application/xml') {109                return $official;110            } elseif (substr($official, 0, 6) === 'image/') {111                if ($return = $this->image()) {112                    return $return;113                }114 115                return $official;116            } elseif ($official === 'text/html') {117                return $this->feed_or_html();118            }119 120            return $official;121        }122 123        return $this->unknown();124    }