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<?php
namespace No3x\WPML\Renderer\Column;
use No3x\WPML\Renderer\Exception\ColumnDoesntExistException;
use No3x\WPML\Renderer\WPML_ColumnManager;
class SubjectColumn extends GenericColumn {
/**
* Base64 encoding prefix.
*
* @since 1.12.0
*
* @var string
*/
const EMAIL_SUBJECT_BASE64_ENCODED = '=?utf-8?B?';
/**
* Quoted-printable encoding prefix.
*
* @since 1.12.0
*
* @var string
*/
const EMAIL_SUBJECT_QUOTED_ENCODED = '=?utf-8?Q?';
/**
* The email subject.
*
* @since 1.12.0
*
* @var string
*/
protected $subject = '';
public function __construct() {
parent::__construct( WPML_ColumnManager::COLUMN_SUBJECT );
}
/**
* @inerhitDoc
*
* @since 1.12.0
*/
public function render( $item, $column_format ) {
if ( ! array_key_exists( $this->column_name, $item ) ) {
throw new ColumnDoesntExistException($this->column_name);
}
if ( empty( $item[ $this->column_name ] ) ) {
return '';
}
$this->subject = $item[ $this->column_name ];
if ( strpos( $this->subject, self::EMAIL_SUBJECT_BASE64_ENCODED ) === 0 ) {
return base64_decode( $this->get_encoded_subject( self::EMAIL_SUBJECT_BASE64_ENCODED ) );
}
if ( strpos( $this->subject, self::EMAIL_SUBJECT_QUOTED_ENCODED ) === 0 ) {
return quoted_printable_decode( $this->get_encoded_subject( self::EMAIL_SUBJECT_QUOTED_ENCODED ) );
}
return esc_html( $this->subject );
}
/**
* Get the encoded part from the subject string.
*
* @since 1.12.0
*
* @param string $encode Type of encoding used in the subject.
*
* @return false|string
*/
private function get_encoded_subject( $encode ) {
$encode_len = strlen( $encode );
$encoded_subject = substr( $this->subject, $encode_len, strlen( $this->subject ) - $encode_len - 1 );
return $encoded_subject;
}
}