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class-auxels-import.php
153 lines
| 1 | <?php |
| 2 | /** |
| 3 | * Class for importing and exporting theme options |
| 4 | */ |
| 5 | class Auxels_Import { |
| 6 | |
| 7 | /** |
| 8 | * Instance of this class. |
| 9 | * |
| 10 | * @var object |
| 11 | */ |
| 12 | protected static $instance = null; |
| 13 | |
| 14 | |
| 15 | function __construct(){ |
| 16 | // Add a radio option for exporting auxin options to wp export options. |
| 17 | add_action( 'export_filters', array( $this, 'export_filters' ) ); |
| 18 | // Process the check field for auxin options while export submitted |
| 19 | add_filter( 'export_args', array( $this, 'export_args' ) ); |
| 20 | |
| 21 | // adding options to export file |
| 22 | add_action( 'rss2_head', array( $this, 'add_xml_tag_option_in_export' ) ); |
| 23 | // Import the options based on parsed data from xml file |
| 24 | add_action( 'import_start', array( $this, 'import_start' ) ); |
| 25 | } |
| 26 | |
| 27 | /** |
| 28 | * Add a radio option for exporting auxin options to available export options. |
| 29 | * |
| 30 | * @return void |
| 31 | */ |
| 32 | public function export_filters() { |
| 33 | ?> |
| 34 | <hr /> |
| 35 | <p><label> |
| 36 | <input type="checkbox" name="auxin-options" checked="checked" aria-describedby="all-content-desc" /> |
| 37 | <?php _e( 'Include theme options', 'auxin-elements' ); ?> |
| 38 | </label></p> |
| 39 | <?php |
| 40 | } |
| 41 | |
| 42 | /** |
| 43 | * Process the check field for auxin options |
| 44 | * |
| 45 | * @param array $args |
| 46 | * @return mixed |
| 47 | */ |
| 48 | public function export_args( $args ){ |
| 49 | |
| 50 | if ( ! empty( $_GET['auxin-options'] ) ) { |
| 51 | $args['auxin-options'] = true; |
| 52 | } |
| 53 | |
| 54 | return $args; |
| 55 | } |
| 56 | |
| 57 | |
| 58 | /** |
| 59 | * Generate option page for wp options in xml format |
| 60 | */ |
| 61 | public function add_xml_tag_option_in_export(){ |
| 62 | global $wpdb; |
| 63 | |
| 64 | $options_ref = $this->get_export_option_list(); |
| 65 | |
| 66 | foreach ( $options_ref as $option_export_name => $option_import_name ) { |
| 67 | $sql = $wpdb->prepare("SELECT option_name, option_value FROM $wpdb->options WHERE option_name = %s", $option_import_name ); |
| 68 | $result = $wpdb->get_results( $sql ); |
| 69 | |
| 70 | if( ! empty( $result[0]->option_value ) ){ |
| 71 | ?> |
| 72 | <wp:option> |
| 73 | <wp:option_key><?php echo $this->wxr_cdata( $option_export_name ); ?></wp:option_key> |
| 74 | <wp:option_value><?php echo $this->wxr_cdata( $result[0]->option_value ); ?></wp:option_value> |
| 75 | </wp:option> |
| 76 | <?php |
| 77 | } |
| 78 | |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | /** |
| 83 | * Retrieves the list of options we intended to include in export file |
| 84 | */ |
| 85 | public function get_export_option_list(){ |
| 86 | return array( |
| 87 | 'theme_options' => THEME_ID . '_theme_options' |
| 88 | ); |
| 89 | } |
| 90 | |
| 91 | |
| 92 | /** |
| 93 | * Import the options based on parsed data from xml file |
| 94 | */ |
| 95 | public function import_start(){ |
| 96 | global $wp_import; |
| 97 | |
| 98 | $options_ref = $this->get_export_option_list(); |
| 99 | |
| 100 | $file = get_attached_file( $wp_import->id ); |
| 101 | // if export file is not uploaded and is a link to a file in theme files |
| 102 | if( empty( $file ) && property_exists( $wp_import, 'import_file' ) ){ |
| 103 | $file = $wp_import->import_file; |
| 104 | } |
| 105 | |
| 106 | include 'class-auxels-import-parser.php'; |
| 107 | |
| 108 | $parser = new Auxels_Import_Parser; |
| 109 | $options = $parser->parse( $file ); |
| 110 | |
| 111 | foreach ( $options as $option_key => $option_value ){ |
| 112 | if( ! empty( $options_ref[ $option_key ] ) ){ |
| 113 | update_option( $options_ref[ $option_key ], maybe_unserialize( $option_value ) ); |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | } |
| 118 | |
| 119 | /** |
| 120 | * Print the data in cdata and utf8 format |
| 121 | * @param string $str |
| 122 | * @return string |
| 123 | */ |
| 124 | function wxr_cdata( $str ) { |
| 125 | if ( ! seems_utf8( $str ) ) { |
| 126 | $str = utf8_encode( $str ); |
| 127 | } |
| 128 | |
| 129 | $str = '<![CDATA[' . str_replace( ']]>', ']]]]><![CDATA[>', $str ) . ']]>'; |
| 130 | |
| 131 | return $str; |
| 132 | } |
| 133 | |
| 134 | |
| 135 | /** |
| 136 | * Return an instance of this class. |
| 137 | * |
| 138 | * @return object A single instance of this class. |
| 139 | */ |
| 140 | public static function get_instance() { |
| 141 | |
| 142 | // If the single instance hasn't been set, set it now. |
| 143 | if ( null == self::$instance ) { |
| 144 | self::$instance = new self; |
| 145 | } |
| 146 | |
| 147 | return self::$instance; |
| 148 | } |
| 149 | |
| 150 | } |
| 151 | |
| 152 | new Auxels_Import(); |
| 153 |