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<?php |
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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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* The abstract class for source managers. |
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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 1.0.0 |
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* @abstract |
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*/ |
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abstract class Visualizer_Source { |
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|
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/** |
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* The array of allowed types. |
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* |
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* @since 1.0.0 |
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* |
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* @access protected |
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* @var array |
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*/ |
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protected static $allowed_types = array( 'string', 'number', 'boolean', 'date', 'datetime', 'timeofday' ); |
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/** |
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* The array of data. |
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* |
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* @since 1.0.0 |
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* |
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* @access protected |
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* @var array |
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*/ |
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protected $_data = array(); |
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/** |
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* The array of series. |
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* |
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* @since 1.0.0 |
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* |
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* @access protected |
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* @var array |
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*/ |
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protected $_series = array(); |
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|
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/** |
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* The error message. |
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* |
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* @access protected |
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* @var string |
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*/ |
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protected $_error; |
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|
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/** |
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* Return allowed types |
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* |
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* @since 1.0.1 |
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* |
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* @static |
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* @access public |
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* @return array the allowed types |
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*/ |
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public static function getAllowedTypes() { |
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return self::$allowed_types; |
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} |
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|
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/** |
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* Validates series tyeps. |
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* |
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* @since 1.0.1 |
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* |
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* @static |
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* @access protected |
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* |
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* @param array $types The icoming series types. |
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* |
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* @return boolean TRUE if sereis types are valid, otherwise FALSE. |
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*/ |
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protected static function _validateTypes( $types ) { |
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foreach ( $types as $type ) { |
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if ( ! in_array( $type, self::$allowed_types, true ) ) { |
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return false; |
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} |
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} |
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|
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return true; |
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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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* @abstract |
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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 abstract function getSourceName(); |
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|
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/** |
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* Fetches information from source, parses it and builds series and data arrays. |
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* |
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* @since 1.0.0 |
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* |
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* @abstract |
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* @access public |
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*/ |
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public abstract function fetch(); |
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|
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/** |
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* Returns series parsed from source. |
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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 array The array of series. |
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*/ |
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public function getSeries() { |
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return $this->_series; |
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} |
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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 1.0.0 |
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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( $this->_data ); |
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} |
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|
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/** |
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* Returns raw data array. |
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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 array |
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*/ |
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public function getRawData() { |
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return $this->_data; |
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} |
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|
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/** |
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* Re populates series if the source is dynamic. |
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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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* |
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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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* |
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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 $series; |
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} |
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|
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/** |
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* Re populates data if the source is dynamic. |
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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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* |
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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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* |
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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 $data; |
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} |
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|
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/** |
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* Normalizes values according to series' type. |
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* |
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* @since 1.0.0 |
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* |
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* @access protected |
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* |
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* @param array $data The row of data. |
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* |
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* @return array Normalized row of data. |
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*/ |
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protected function _normalizeData( $data ) { |
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// normalize values |
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foreach ( $this->_series as $i => $series ) { |
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// if no value exists for the seires, then add null |
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if ( ! isset( $data[ $i ] ) ) { |
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$data[ $i ] = null; |
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} |
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if ( is_null( $data[ $i ] ) ) { |
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continue; |
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} |
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switch ( $series['type'] ) { |
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case 'number': |
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$data[ $i ] = ( is_numeric( $data[ $i ] ) ) ? floatval( $data[ $i ] ) : ( is_numeric( str_replace( ',', '', $data[ $i ] ) ) ? floatval( str_replace( ',', '', $data[ $i ] ) ) : null ); |
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break; |
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case 'boolean': |
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$data[ $i ] = ! empty( $data[ $i ] ) ? filter_var( $data[ $i ], FILTER_VALIDATE_BOOLEAN ) : null; |
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break; |
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case 'timeofday': |
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$date = new DateTime( '1984-03-16T' . $data[ $i ] ); |
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if ( $date ) { |
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$data[ $i ] = array( |
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intval( $date->format( 'H' ) ), |
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intval( $date->format( 'i' ) ), |
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intval( $date->format( 's' ) ), |
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0, |
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); |
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} |
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break; |
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case 'datetime': |
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// let's check if the date is a Unix epoch |
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$value = DateTime::createFromFormat( 'U', $data[ $i ] ); |
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if ( $value !== false && ! is_wp_error( $value ) ) { |
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$data[ $i ] = $value->format( 'Y-m-d H:i:s' ); |
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} |
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break; |
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case 'string': |
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$data[ $i ] = $this->toUTF8( $data[ $i ] ); |
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break; |
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} |
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} |
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|
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return apply_filters( 'visualizer_format_data', $data, $this->_series ); |
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} |
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|
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|
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/** |
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* Converts values to UTF8, if required. |
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* |
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* @access protected |
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* |
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* @param string $datum The data to convert. |
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* |
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* @return string The converted data. |
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*/ |
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protected final function toUTF8( $datum ) { |
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if ( ! function_exists( 'mb_detect_encoding' ) || mb_detect_encoding( $datum ) !== 'ASCII' ) { |
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$datum = \ForceUTF8\Encoding::toUTF8( $datum ); |
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} |
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return $datum; |
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} |
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|
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/** |
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* Determines the formats of date/time columns. |
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* |
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* @access public |
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* |
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* @param array $series The actual array of series. |
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* @param array $data The actual array of data. |
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* |
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* @return array |
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*/ |
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public static final function get_date_formats_if_exists( $series, $data ) { |
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$date_formats = array(); |
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$types = array(); |
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$index = 0; |
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foreach ( $series as $column ) { |
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if ( in_array( $column['type'], array( 'date', 'datetime', 'timeofday' ), true ) ) { |
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$types[] = array( 'index' => $index, 'type' => $column['type'] ); |
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} |
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$index++; |
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} |
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|
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if ( ! $types ) { |
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return $date_formats; |
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} |
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|
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$random = $data; |
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// let's randomly pick 5 data points instead of cycling through the entire data set. |
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if ( count( $data ) > 5 ) { |
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$random = array(); |
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for ( $x = 0; $x < 5; $x++ ) { |
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$random[] = $data[ rand( 0, count( $data ) - 1 ) ]; |
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} |
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} |
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|
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foreach ( $types as $type ) { |
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$formats = array(); |
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foreach ( $random as $datum ) { |
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$f = self::determine_date_format( $datum[ $type['index'] ], $type['type'] ); |
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if ( $f ) { |
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$formats[] = $f; |
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} |
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} |
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// if there are multiple formats, use the most frequent format. |
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$formats = array_filter( $formats ); |
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if ( $formats ) { |
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$formats = array_count_values( $formats ); |
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arsort( $formats ); |
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$formats = array_keys( $formats ); |
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$final_format = reset( $formats ); |
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// we have determined the PHP format; now we have to change this into the JS format where m = MM, d = DD etc. |
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$date_formats[] = array( 'index' => $type['index'], 'format' => str_replace( array( 'Y', 'm', 'd', 'H', 'i', 's' ), array( 'YYYY', 'MM', 'DD', 'HH', 'mm', 'ss' ), $final_format ) ); |
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} |
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} |
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return $date_formats; |
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} |
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|
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/** |
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* Determines the date/time format of the given string. |
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* |
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* @access private |
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* |
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* @param string $value The string. |
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* @param string $type 'date', 'timeofday' or 'datetime'. |
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* |
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* @return string|null |
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*/ |
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private static final function determine_date_format( $value, $type ) { |
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if ( version_compare( phpversion(), '5.3.0', '<' ) ) { |
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do_action( 'themeisle_log_event', Visualizer_Plugin::NAME, sprintf( 'PHP version %s not supported', phpversion() ), 'error', __FILE__, __LINE__ ); |
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return null; |
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} |
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|
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$formats = array( |
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'Y/m/d', |
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'Y-m-d', |
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'm/d/Y', |
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'm-d-Y', |
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'd-m-Y', |
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'd/m/Y', |
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); |
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|
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switch ( $type ) { |
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case 'datetime': |
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$formats = array_merge( |
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$formats, array( |
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'U', |
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'Y/m/d H:i:s', |
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'Y-m-d H:i:s', |
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'm/d/Y H:i:s', |
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'm-d-Y H:i:s', |
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) |
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); |
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break; |
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case 'timeofday': |
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$formats = array_merge( |
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$formats, array( |
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'H:i:s', |
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'H:i', |
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) |
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); |
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break; |
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} |
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|
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$formats = apply_filters( 'visualizer_date_formats', $formats, $type ); |
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|
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foreach ( $formats as $format ) { |
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$return = DateTime::createFromFormat( $format, $value ); |
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if ( $return !== false && ! is_wp_error( $return ) ) { |
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return $format; |
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} |
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} |
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// invalid format |
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return null; |
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} |
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|
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/** |
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* Returns the error, if any. |
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* |
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* @access public |
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* @return string |
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*/ |
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public function get_error() { |
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return $this->_error; |
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} |
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|
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|
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} |
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|
