Critics have remarked that those four worthies were truly peerless throughout the ages; yet the present falls short of the past—the ancients favored unadorned simplicity, whereas the moderns prefer refined elegance. Styles of substance and ornament rise and fall in succession, shifting with the changing mores of the times; such evolution is simply the natural order of things. The ideal lies in honoring antiquity without clashing with the present, and embracing modernity without succumbing to its flaws—embodying that perfect balance of substance and refinement that defines the true gentleman. There is surely no need to abandon a carved palace in favor of a cave dwelling, or to trade a jade carriage for a primitive cart with solid wooden wheels.🌌 SpectraShell

🌌 SpectraShell

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📄 Viewing: class-automatic-upgrader-skin.php

<?php
/**
 * Upgrader API: Automatic_Upgrader_Skin class
 *
 * @package WordPress
 * @subpackage Upgrader
 * @since 4.6.0
 */

/**
 * Upgrader Skin for Automatic WordPress Upgrades.
 *
 * This skin is designed to be used when no output is intended, all output
 * is captured and stored for the caller to process and log/email/discard.
 *
 * @since 3.7.0
 * @since 4.6.0 Moved to its own file from wp-admin/includes/class-wp-upgrader-skins.php.
 *
 * @see Bulk_Upgrader_Skin
 */
class Automatic_Upgrader_Skin extends WP_Upgrader_Skin {
	protected $messages = array();

	/**
	 * Determines whether the upgrader needs FTP/SSH details in order to connect
	 * to the filesystem.
	 *
	 * @since 3.7.0
	 * @since 4.6.0 The `$context` parameter default changed from `false` to an empty string.
	 *
	 * @see request_filesystem_credentials()
	 *
	 * @param bool|WP_Error $error                        Optional. Whether the current request has failed to connect,
	 *                                                    or an error object. Default false.
	 * @param string        $context                      Optional. Full path to the directory that is tested
	 *                                                    for being writable. Default empty.
	 * @param bool          $allow_relaxed_file_ownership Optional. Whether to allow Group/World writable. Default false.
	 * @return bool True on success, false on failure.
	 */
	public function request_filesystem_credentials( $error = false, $context = '', $allow_relaxed_file_ownership = false ) {
		if ( $context ) {
			$this->options['context'] = $context;
		}
		/*
		 * TODO: Fix up request_filesystem_credentials(), or split it, to allow us to request a no-output version.
		 * This will output a credentials form in event of failure. We don't want that, so just hide with a buffer.
		 */
		ob_start();
		$result = parent::request_filesystem_credentials( $error, $context, $allow_relaxed_file_ownership );
		ob_end_clean();
		return $result;
	}

	/**
	 * Retrieves the upgrade messages.
	 *
	 * @since 3.7.0
	 *
	 * @return string[] Messages during an upgrade.
	 */
	public function get_upgrade_messages() {
		return $this->messages;
	}

	/**
	 * Stores a message about the upgrade.
	 *
	 * @since 3.7.0
	 * @since 5.9.0 Renamed `$data` to `$feedback` for PHP 8 named parameter support.
	 *
	 * @param string|array|WP_Error $feedback Message data.
	 * @param mixed                 ...$args  Optional text replacements.
	 */
	public function feedback( $feedback, ...$args ) {
		if ( is_wp_error( $feedback ) ) {
			$string = $feedback->get_error_message();
		} elseif ( is_array( $feedback ) ) {
			return;
		} else {
			$string = $feedback;
		}

		if ( ! empty( $this->upgrader->strings[ $string ] ) ) {
			$string = $this->upgrader->strings[ $string ];
		}

		if ( str_contains( $string, '%' ) ) {
			if ( ! empty( $args ) ) {
				$string = vsprintf( $string, $args );
			}
		}

		$string = trim( $string );

		// Only allow basic HTML in the messages, as it'll be used in emails/logs rather than direct browser output.
		$string = wp_kses(
			$string,
			array(
				'a'      => array(
					'href' => true,
				),
				'br'     => true,
				'em'     => true,
				'strong' => true,
			)
		);

		if ( empty( $string ) ) {
			return;
		}

		$this->messages[] = $string;
	}

	/**
	 * Creates a new output buffer.
	 *
	 * @since 3.7.0
	 */
	public function header() {
		ob_start();
	}

	/**
	 * Retrieves the buffered content, deletes the buffer, and processes the output.
	 *
	 * @since 3.7.0
	 */
	public function footer() {
		$output = ob_get_clean();
		if ( ! empty( $output ) ) {
			$this->feedback( $output );
		}
	}
}

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