<?php

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/**

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* WPSEO plugin file.

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*

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* @package WPSEO\Admin\Export

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*/

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/**

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* Class WPSEO_Export.

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*

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* Class with functionality to export the WP SEO settings.

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*/

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class WPSEO_Export {

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/**

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* Holds the nonce action.

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*

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* @var string

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*/

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const NONCE_ACTION = 'wpseo_export';

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/**

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* Holds the export data.

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*

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* @var string

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*/

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private $export = '';

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/**

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* Holds whether the export was a success.

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*

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* @var bool

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*/

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public $success;

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/**

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* Handles the export request.

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*/

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public function export() {

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check_admin_referer( self::NONCE_ACTION );

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$this->export_settings();

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$this->output();

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}

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/**

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* Outputs the export.

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*/

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public function output() {

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if ( ! WPSEO_Capability_Utils::current_user_can( 'wpseo_manage_options' ) ) {

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esc_html_e( 'You do not have the required rights to export settings.', 'wordpress-seo' );

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return;

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}

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echo '<p id="wpseo-settings-export-desc">';

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printf(

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/* translators: %1$s expands to Import settings */

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esc_html__(

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'Copy all these settings to another site\'s %1$s tab and click "%1$s" there.',

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'wordpress-seo'

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),

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esc_html__(

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'Import settings',

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'wordpress-seo'

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)

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);

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echo '</p>';

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/* translators: %1$s expands to Yoast SEO */

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echo '<label for="wpseo-settings-export" class="yoast-inline-label">' . sprintf( __( 'Your %1$s settings:', 'wordpress-seo' ), 'Yoast SEO' ) . '</label><br />';

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echo '<textarea id="wpseo-settings-export" rows="20" cols="100" aria-describedby="wpseo-settings-export-desc">' . esc_textarea( $this->export ) . '</textarea>';

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}

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/**

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* Exports the current site's WP SEO settings.

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*/

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private function export_settings() {

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$this->export_header();

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foreach ( WPSEO_Options::get_option_names() as $opt_group ) {

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$this->write_opt_group( $opt_group );

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}

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}

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/**

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* Writes the header of the export.

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*/

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private function export_header() {

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$header = sprintf(

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/* translators: %1$s expands to Yoast SEO, %2$s expands to Yoast.com */

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esc_html__( 'These are settings for the %1$s plugin by %2$s', 'wordpress-seo' ),

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'Yoast SEO',

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'Yoast.com'

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);

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$this->write_line( '; ' . $header );

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}

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/**

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* Writes a line to the export.

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*

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* @param string $line Line string.

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* @param bool $newline_first Boolean flag whether to prepend with new line.

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*/

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private function write_line( $line, $newline_first = false ) {

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if ( $newline_first ) {

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$this->export .= PHP_EOL;

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}

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$this->export .= $line . PHP_EOL;

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}

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/**

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* Writes an entire option group to the export.

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*

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* @param string $opt_group Option group name.

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*/

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private function write_opt_group( $opt_group ) {

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$this->write_line( '[' . $opt_group . ']', true );

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$options = get_option( $opt_group );

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if ( ! is_array( $options ) ) {

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return;

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}

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foreach ( $options as $key => $elem ) {

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if ( is_array( $elem ) ) {

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$count = count( $elem );

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for ( $i = 0; $i < $count; $i++ ) {

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$this->write_setting( $key . '[]', $elem[ $i ] );

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}

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}

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else {

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$this->write_setting( $key, $elem );

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}

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}

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}

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/**

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* Writes a settings line to the export.

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*

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* @param string $key Key string.

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* @param string $val Value string.

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*/

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private function write_setting( $key, $val ) {

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if ( is_string( $val ) ) {

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$val = '"' . $val . '"';

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}

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$this->write_line( $key . ' = ' . $val );

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}

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}

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