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<?php
/**
 * Copyright 2011-2017 Horde LLC (http://www.horde.org/)
 *
 * See the enclosed file COPYING for license information (LGPL). If you
 * did not receive this file, see http://www.horde.org/licenses/lgpl21.
 *
 * @category  Horde
 * @copyright 2011-2017 Horde LLC
 * @license   http://www.horde.org/licenses/lgpl21 LGPL 2.1
 * @package   Imap_Client
 */

/**
 * Object containing data returned by the Horde_Imap_Client_Base#fetch()
 * command.
 *
 * @author    Michael Slusarz <slusarz@horde.org>
 * @category  Horde
 * @copyright 2011-2017 Horde LLC
 * @license   http://www.horde.org/licenses/lgpl21 LGPL 2.1
 * @package   Imap_Client
 */
class Horde_Imap_Client_Data_Fetch
{
    /** Header formatting constants. */
    const HEADER_PARSE = 1;
    const HEADER_STREAM = 2;

/**
     * Internal data array.
     *
     * @var array
     */
    protected $_data = array();

/**
     */
    public function __clone()
    {
        $this->_data = unserialize(serialize($this->_data));
    }

/**
     * Set the full message property.
     *
     * @param mixed $msg  The full message text, as either a string or stream
     *                    resource.
     */
    public function setFullMsg($msg)
    {
        $this->_data[Horde_Imap_Client::FETCH_FULLMSG] = $this->_setMixed($msg);
    }

/**
     * Returns the full message.
     *
     * @param boolean $stream  Return as a stream?
     *
     * @return mixed  The full text of the entire message.
     */
    public function getFullMsg($stream = false)
    {
        return $this->_msgText(
            $stream,
            isset($this->_data[Horde_Imap_Client::FETCH_FULLMSG])
                ? $this->_data[Horde_Imap_Client::FETCH_FULLMSG]
                : null
        );
    }

/**
     * Set the message structure.
     *
     * @param Horde_Mime_Part $structure  The base MIME part of the message.
     */
    public function setStructure(Horde_Mime_Part $structure)
    {
        $this->_data[Horde_Imap_Client::FETCH_STRUCTURE] = $structure;
    }

/**
     * Get the message structure.
     *
     * @return Horde_Mime_Part $structure  The base MIME part of the message.
     */
    public function getStructure()
    {
        return isset($this->_data[Horde_Imap_Client::FETCH_STRUCTURE])
            ? clone $this->_data[Horde_Imap_Client::FETCH_STRUCTURE]
            : new Horde_Mime_Part();
    }

/**
     * Set a header entry.
     *
     * @param string $label  The search label.
     * @param mixed $data    Either a Horde_Mime_Headers object or the raw
     *                       header text.
     */
    public function setHeaders($label, $data)
    {
        if ($data instanceof Horde_Stream) {
            $data = $data->stream;
        }
        $this->_data[Horde_Imap_Client::FETCH_HEADERS][$label] = $data;
    }

/**
     * Get a header entry.
     *
     * @param string $label    The search label.
     * @param integer $format  The return format. If self::HEADER_PARSE,
     *                         returns a Horde_Mime_Headers object. If
     *                         self::HEADER_STREAM, returns a stream.
     *                         Otherwise, returns header text.
     *
     * @return mixed  See $format.
     */
    public function getHeaders($label, $format = 0)
    {
        return $this->_getHeaders(
            $label,
            $format,
            Horde_Imap_Client::FETCH_HEADERS
        );
    }

/**
     * Set a header text entry.
     *
     * @param string $id   The MIME ID.
     * @param mixed $text  The header text, as either a string or stream
     *                     resource.
     */
    public function setHeaderText($id, $text)
    {
        $this->_data[Horde_Imap_Client::FETCH_HEADERTEXT][$id] = $this->_setMixed($text);
    }

/**
     * Get a header text entry.
     *
     * @param string $id       The MIME ID.
     * @param integer $format  The return format. If self::HEADER_PARSE,
     *                         returns a Horde_Mime_Headers object. If
     *                         self::HEADER_STREAM, returns a stream.
     *                         Otherwise, returns header text.
     *
     * @return mixed  See $format.
     */
    public function getHeaderText($id = 0, $format = 0)
    {
        return $this->_getHeaders(
            $id,
            $format,
            Horde_Imap_Client::FETCH_HEADERTEXT
        );
    }

/**
     * Set a MIME header entry.
     *
     * @param string $id   The MIME ID.
     * @param mixed $text  The header text, as either a string or stream
     *                     resource.
     */
    public function setMimeHeader($id, $text)
    {
        $this->_data[Horde_Imap_Client::FETCH_MIMEHEADER][$id] = $this->_setMixed($text);
    }

/**
     * Get a MIME header entry.
     *
     * @param string $id       The MIME ID.
     * @param integer $format  The return format. If self::HEADER_PARSE,
     *                         returns a Horde_Mime_Headers object. If
     *                         self::HEADER_STREAM, returns a stream.
     *                         Otherwise, returns header text.
     *
     * @return mixed  See $format.
     */
    public function getMimeHeader($id, $format = 0)
    {
        return $this->_getHeaders(
            $id,
            $format,
            Horde_Imap_Client::FETCH_MIMEHEADER
        );
    }

/**
     * Set a body part entry.
     *
     * @param string $id      The MIME ID.
     * @param mixed $text     The body part text, as either a string or stream
     *                        resource.
     * @param string $decode  Either '8bit', 'binary', or null.
     */
    public function setBodyPart($id, $text, $decode = null)
    {
        $this->_data[Horde_Imap_Client::FETCH_BODYPART][$id] = array(
            'd' => $decode,
            't' => $this->_setMixed($text)
        );
    }

/**
     * Get a body part entry.
     *
     * @param string $id       The MIME ID.
     * @param boolean $stream  Return as a stream?
     *
     * @return mixed  The full text of the body part.
     */
    public function getBodyPart($id, $stream = false)
    {
        return $this->_msgText(
            $stream,
            isset($this->_data[Horde_Imap_Client::FETCH_BODYPART][$id])
                ? $this->_data[Horde_Imap_Client::FETCH_BODYPART][$id]['t']
                : null
        );
    }

/**
     * Determines if/how a body part was MIME decoded on the server.
     *
     * @param string $id  The MIME ID.
     *
     * @return string  Either '8bit', 'binary', or null.
     */
    public function getBodyPartDecode($id)
    {
        return isset($this->_data[Horde_Imap_Client::FETCH_BODYPART][$id])
            ? $this->_data[Horde_Imap_Client::FETCH_BODYPART][$id]['d']
            : null;
    }

/**
     * Set the body part size for a body part.
     *
     * @param string $id     The MIME ID.
     * @param integer $size  The size (in bytes).
     */
    public function setBodyPartSize($id, $size)
    {
        $this->_data[Horde_Imap_Client::FETCH_BODYPARTSIZE][$id] = intval($size);
    }

/**
     * Returns the body part size, if returned by the server.
     *
     * @param string $id  The MIME ID.
     *
     * @return integer  The body part size, in bytes.
     */
    public function getBodyPartSize($id)
    {
        return isset($this->_data[Horde_Imap_Client::FETCH_BODYPARTSIZE][$id])
            ? $this->_data[Horde_Imap_Client::FETCH_BODYPARTSIZE][$id]
            : null;
    }

/**
     * Set a body text entry.
     *
     * @param string $id   The MIME ID.
     * @param mixed $text  The body part text, as either a string or stream
     *                     resource.
     */
    public function setBodyText($id, $text)
    {
        $this->_data[Horde_Imap_Client::FETCH_BODYTEXT][$id] = $this->_setMixed($text);
    }

/**
     * Get a body text entry.
     *
     * @param string $id       The MIME ID.
     * @param boolean $stream  Return as a stream?
     *
     * @return mixed  The full text of the body text.
     */
    public function getBodyText($id = 0, $stream = false)
    {
        return $this->_msgText(
            $stream,
            isset($this->_data[Horde_Imap_Client::FETCH_BODYTEXT][$id])
                ? $this->_data[Horde_Imap_Client::FETCH_BODYTEXT][$id]
                : null
        );
    }

/**
     * Set envelope data.
     *
     * @param array $data  The envelope data to pass to the Envelope object
     *                     constructor, or an Envelope object.
     */
    public function setEnvelope($data)
    {
        $this->_data[Horde_Imap_Client::FETCH_ENVELOPE] = is_array($data)
            ? new Horde_Imap_Client_Data_Envelope($data)
            : $data;
    }

/**
     * Get envelope data.
     *
     * @return Horde_Imap_Client_Data_Envelope  An envelope object.
     */
    public function getEnvelope()
    {
        return isset($this->_data[Horde_Imap_Client::FETCH_ENVELOPE])
            ? clone $this->_data[Horde_Imap_Client::FETCH_ENVELOPE]
            : new Horde_Imap_Client_Data_Envelope();
    }

/**
     * Set IMAP flags.
     *
     * @param array $flags  An array of IMAP flags.
     */
    public function setFlags(array $flags)
    {
        $this->_data[Horde_Imap_Client::FETCH_FLAGS] = array_map(
            'Horde_String::lower',
            array_map('trim', $flags)
        );
    }

/**
     * Get IMAP flags.
     *
     * @return array  An array of IMAP flags (all flags in lowercase).
     */
    public function getFlags()
    {
        return isset($this->_data[Horde_Imap_Client::FETCH_FLAGS])
            ? $this->_data[Horde_Imap_Client::FETCH_FLAGS]
            : array();
    }

/**
     * Set IMAP internal date.
     *
     * @param mixed $date  Either a Horde_Imap_Client_DateTime object or a
     *                     date string.
     */
    public function setImapDate($date)
    {
        $this->_data[Horde_Imap_Client::FETCH_IMAPDATE] = is_object($date)
            ? $date
            : new Horde_Imap_Client_DateTime($date);
    }

/**
     * Get internal IMAP date.
     *
     * @return Horde_Imap_Client_DateTime  A date object.
     */
    public function getImapDate()
    {
        return isset($this->_data[Horde_Imap_Client::FETCH_IMAPDATE])
            ? clone $this->_data[Horde_Imap_Client::FETCH_IMAPDATE]
            : new Horde_Imap_Client_DateTime();
    }

/**
     * Set message size.
     *
     * @param integer $size  The size of the message, in bytes.
     */
    public function setSize($size)
    {
        $this->_data[Horde_Imap_Client::FETCH_SIZE] = intval($size);
    }

/**
     * Get message size.
     *
     * @return integer  The size of the message, in bytes.
     */
    public function getSize()
    {
        return isset($this->_data[Horde_Imap_Client::FETCH_SIZE])
            ? $this->_data[Horde_Imap_Client::FETCH_SIZE]
            : 0;
    }

/**
     * Set UID.
     *
     * @param integer $uid  The message UID.
     */
    public function setUid($uid)
    {
        $this->_data[Horde_Imap_Client::FETCH_UID] = intval($uid);
    }

/**
     * Get UID.
     *
     * @return integer  The message UID.
     */
    public function getUid()
    {
        return isset($this->_data[Horde_Imap_Client::FETCH_UID])
            ? $this->_data[Horde_Imap_Client::FETCH_UID]
            : null;
    }

/**
     * Set message sequence number.
     *
     * @param integer $seq  The message sequence number.
     */
    public function setSeq($seq)
    {
        $this->_data[Horde_Imap_Client::FETCH_SEQ] = intval($seq);
    }

/**
     * Get message sequence number.
     *
     * @return integer  The message sequence number.
     */
    public function getSeq()
    {
        return isset($this->_data[Horde_Imap_Client::FETCH_SEQ])
            ? $this->_data[Horde_Imap_Client::FETCH_SEQ]
            : null;
    }

/**
     * Set the modified sequence value for the message.
     *
     * @param integer $modseq  The modseq value.
     */
    public function setModSeq($modseq)
    {
        $this->_data[Horde_Imap_Client::FETCH_MODSEQ] = intval($modseq);
    }

/**
     * Get the modified sequence value for the message.
     *
     * @return integer  The modseq value.
     */
    public function getModSeq()
    {
        return isset($this->_data[Horde_Imap_Client::FETCH_MODSEQ])
            ? $this->_data[Horde_Imap_Client::FETCH_MODSEQ]
            : null;
    }

/**
     * Set the internationalized downgraded status for the message.
     *
     * @since 2.11.0
     *
     * @param boolean $downgraded  True if at least one message component has
     *                             been downgraded.
     */
    public function setDowngraded($downgraded)
    {
        if ($downgraded) {
            $this->_data[Horde_Imap_Client::FETCH_DOWNGRADED] = true;
        } else {
            unset($this->_data[Horde_Imap_Client::FETCH_DOWNGRADED]);
        }
    }

/**
     * Does the message contain internationalized downgraded data (i.e. it
     * is a "surrogate" message)?
     *
     * @since 2.11.0
     *
     * @return boolean  True if at least one message components has been
     *                  downgraded.
     */
    public function isDowngraded()
    {
        return !empty($this->_data[Horde_Imap_Client::FETCH_DOWNGRADED]);
    }

/**
     * Return the internal representation of the data.
     *
     * @return array  The data array.
     */
    public function getRawData()
    {
        return $this->_data;
    }

/**
     * Merge a fetch object into this one.
     *
     * @param Horde_Imap_Client_Data_Fetch $data  A fetch object.
     */
    public function merge(Horde_Imap_Client_Data_Fetch $data)
    {
        $this->_data = array_replace_recursive(
            $this->_data,
            $data->getRawData()
        );
    }

/**
     * Does this object containing cacheable data of the given type?
     *
     * @param integer $type  The type to query.
     *
     * @return boolean  True if the type is cacheable.
     */
    public function exists($type)
    {
        return isset($this->_data[$type]);
    }

/**
     * Does this object contain only default values for all fields?
     *
     * @return boolean  True if object contains default data.
     */
    public function isDefault()
    {
        return empty($this->_data);
    }

/**
     * Return text representation of a field.
     *
     * @param boolean $stream  Return as a stream?
     * @param mixed $data      The field data (string or resource) or null if
     *                         field does not exist.
     *
     * @return mixed  Requested text representation.
     */
    protected function _msgText($stream, $data)
    {
        if ($data instanceof Horde_Stream) {
            if ($stream) {
                $data->rewind();
                return $data->stream;
            }
            return strval($data);
        }

if (is_resource($data)) {
            rewind($data);
            return $stream
                ? $data
                : stream_get_contents($data);
        }

if (!$stream) {
            return strval($data);
        }

$tmp = fopen('php://temp', 'w+');

if (!is_null($data)) {
            fwrite($tmp, $data);
            rewind($tmp);
        }

return $tmp;
    }

/**
     * Return representation of a header field.
     *
     * @param string $id       The header id.
     * @param integer $format  The return format. If self::HEADER_PARSE,
     *                         returns a Horde_Mime_Headers object. If
     *                         self::HEADER_STREAM, returns a stream.
     *                         Otherwise, returns header text.
     * @param integer $key     The array key where the data is stored in the
     *                         internal array.
     *
     * @return mixed  The data in the format specified by $format.
     */
    protected function _getHeaders($id, $format, $key)
    {
        switch ($format) {
        case self::HEADER_STREAM:
            if (!isset($this->_data[$key][$id])) {
                $data = null;
            } elseif (is_object($this->_data[$key][$id])) {
                switch ($key) {
                case Horde_Imap_Client::FETCH_HEADERS:
                    $data = $this->_getHeaders($id, 0, $key);
                    break;

case Horde_Imap_Client::FETCH_HEADERTEXT:
                case Horde_Imap_Client::FETCH_MIMEHEADER:
                    $data = $this->_data[$key][$id];
                    break;
                }
            } else {
                $data = $this->_data[$key][$id];
            }

return $this->_msgText(true, $data);

case self::HEADER_PARSE:
            if (!isset($this->_data[$key][$id])) {
                return new Horde_Mime_Headers();
            } elseif (is_object($this->_data[$key][$id])) {
                switch ($key) {
                case Horde_Imap_Client::FETCH_HEADERS:
                    return clone $this->_data[$key][$id];

case Horde_Imap_Client::FETCH_HEADERTEXT:
                case Horde_Imap_Client::FETCH_MIMEHEADER:
                    $hdrs = $this->_data[$key][$id];
                    break;
                }
            } else {
                $hdrs = $this->_getHeaders($id, self::HEADER_STREAM, $key);
            }

return Horde_Mime_Headers::parseHeaders($hdrs);
        }

if (!isset($this->_data[$key][$id])) {
            return '';
        }

if (is_object($this->_data[$key][$id])) {
            switch ($key) {
            case Horde_Imap_Client::FETCH_HEADERS:
                return $this->_data[$key][$id]->toString(
                    array('nowrap' => true)
                );

case Horde_Imap_Client::FETCH_HEADERTEXT:
            case Horde_Imap_Client::FETCH_MIMEHEADER:
                return strval($this->_data[$key][$id]);
            }
        }

return $this->_msgText(false, $this->_data[$key][$id]);
    }

/**
     * Converts mixed input (string or resource) to the correct internal
     * representation.
     *
     * @param mixed $data  Mixed data (string, resource, Horde_Stream object).
     *
     * @return mixed  The internal representation of that data.
     */
    protected function _setMixed($data)
    {
        return is_resource($data)
            ? new Horde_Stream_Existing(array('stream' => $data))
            : $data;
    }

}