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<?php |
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|
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// +----------------------------------------------------------------------+ |
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// | Copyright 2013 Madpixels (email : visualizer@madpixels.net) | |
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// +----------------------------------------------------------------------+ |
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// | This program is free software; you can redistribute it and/or modify | |
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// | it under the terms of the GNU General Public License, version 2, as | |
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// | published by the Free Software Foundation. | |
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// | | |
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// | This program is distributed in the hope that it will be useful, | |
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// | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
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// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
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// | GNU General Public License for more details. | |
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// | | |
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// | You should have received a copy of the GNU General Public License | |
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// | along with this program; if not, write to the Free Software | |
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// | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, | |
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// | MA 02110-1301 USA | |
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// +----------------------------------------------------------------------+ |
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// | Author: Eugene Manuilov <eugene@manuilov.org> | |
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// +----------------------------------------------------------------------+ |
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|
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/** |
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* Source manager for remote CSV files. |
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* |
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* @category Visualizer |
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* @package Source |
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* |
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* @since 1.1.0 |
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*/ |
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class Visualizer_Source_Csv_Remote extends Visualizer_Source_Csv { |
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|
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/** |
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* Temporary file name used when allow_url_fopen option is disabled. |
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* |
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* @since 1.4.2 |
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* |
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* @access private |
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* @var string |
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*/ |
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private $_tmpfile = false; |
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|
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/** |
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* Returns data parsed from source. |
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* |
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* @since 1.1.0 |
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* |
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* @access public |
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* @return string The serialized array of data. |
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*/ |
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public function getData() { |
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return serialize( array( |
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'source' => $this->_filename, |
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'data' => $this->_data, |
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) ); |
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} |
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|
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/** |
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* Re populates data and series. |
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* |
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* @since 1.1.0 |
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* |
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* @access private |
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* @param int $chart_id The chart id. |
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* @return boolean TRUE on success, otherwise FALSE. |
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*/ |
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private function _repopulate( $chart_id ) { |
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// if it has been already populated, then just return true |
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if ( !empty( $this->_data ) && !empty( $this->_series ) ) { |
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return true; |
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} |
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|
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// if filename is empty, extract it from chart content |
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if ( empty( $this->_filename ) ) { |
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$chart = get_post( $chart_id ); |
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$data = unserialize( $chart->post_content ); |
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if ( !isset( $data['source'] ) ) { |
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return false; |
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} |
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|
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$this->_filename = $data['source']; |
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} |
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|
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// populate series and data information |
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return $this->fetch(); |
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} |
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|
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/** |
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* Re populates data. |
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* |
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* @since 1.1.0 |
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* |
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* @access public |
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* @param array $data The actual array of data. |
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* @param int $chart_id The chart id. |
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* @return array The re populated array of data or old one. |
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*/ |
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public function repopulateData( $data, $chart_id ) { |
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return $this->_repopulate( $chart_id ) ? $this->_data : $data; |
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} |
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|
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/** |
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* Re populates series. |
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* |
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* @since 1.1.0 |
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* |
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* @access public |
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* @param array $series The actual array of series. |
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* @param int $chart_id The chart id. |
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* @return array The re populated array of series or old one. |
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*/ |
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public function repopulateSeries( $series, $chart_id ) { |
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return $this->_repopulate( $chart_id ) ? $this->_series : $series; |
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} |
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|
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/** |
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* Returns source name. |
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* |
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* @since 1.0.0 |
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* |
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* @access public |
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* @return string The name of source. |
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*/ |
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public function getSourceName() { |
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return __CLASS__; |
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} |
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|
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/** |
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* Returns file handle to fetch data from. |
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* |
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* @since 1.4.2 |
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* |
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* @access protected |
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* @staticvar boolean $allow_url_fopen Determines whether or not allow_url_fopen option is enabled. |
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* @param string $filename Optional file name to get handle. If omitted, $_filename is used. |
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* @return resource File handle resource on success, otherwise FALSE. |
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*/ |
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protected function _get_file_handle( $filename = false ) { |
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static $allow_url_fopen = null; |
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|
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if ( $this->_tmpfile && is_readable( $this->_tmpfile ) ) { |
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return parent::_get_file_handle( $this->_tmpfile ); |
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} |
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|
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if ( is_null( $allow_url_fopen ) ) { |
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$allow_url_fopen = filter_var( ini_get( 'allow_url_fopen' ), FILTER_VALIDATE_BOOLEAN ); |
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} |
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|
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$scheme = parse_url( $this->_filename, PHP_URL_SCHEME ); |
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if ( $allow_url_fopen && in_array( $scheme, stream_get_wrappers() ) ) { |
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return parent::_get_file_handle( $filename ); |
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} |
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|
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require_once ABSPATH . 'wp-admin/includes/file.php'; |
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|
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$this->_tmpfile = download_url( $this->_filename ); |
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|
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return !is_wp_error( $this->_tmpfile ) ? parent::_get_file_handle( $this->_tmpfile ) : false; |
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} |
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|
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} |
