Initial commit

functions/kirki/modules/css/class-kirki-css-to-file.php

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+<?php
+/**
+ * Writes compiled CSS to a file.
+ *
+ * @package     Kirki
+ * @subpackage  CSS Module
+ * @copyright   Copyright (c) 2017, Aristeides Stathopoulos
+ * @license    https://opensource.org/licenses/MIT
+ * @since       3.0.0
+ */
+
+/**
+ * Handles writing CSS to a file.
+ */
+class Kirki_CSS_To_File {
+
+	/**
+	 * Fallback to inline CSS?
+	 *
+	 * @access protected
+	 * @since 3.0.0
+	 * @var bool
+	 */
+	protected $fallback = false;
+
+	/**
+	 * Constructor.
+	 *
+	 * @access public
+	 * @since 3.0.0
+	 */
+	public function __construct() {
+
+		// If the file doesn't exist, create it.
+		if ( ! file_exists( $this->get_path( 'file' ) ) ) {
+
+			// If the file-write fails, fallback to inline
+			// and cache the failure so we don't try again immediately.
+			$this->write_file();
+		}
+		add_action( 'customize_save_after', array( $this, 'write_file' ) );
+	}
+
+	/**
+	 * Gets the path of the CSS file and folder in the filesystem.
+	 *
+	 * @access protected
+	 * @since 3.0.0
+	 * @param string $context Can be "file" or "folder". If empty, returns both as array.
+	 * @return string|array
+	 */
+	protected function get_path( $context = '' ) {
+		$upload_dir = wp_upload_dir();
+		$paths      = array(
+			'file'   => wp_normalize_path( $upload_dir['basedir'] . '/kirki-css/styles.css' ),
+			'folder' => wp_normalize_path( $upload_dir['basedir'] . '/kirki-css' ),
+		);
+
+		if ( 'file' === $context ) {
+			return $paths['file'];
+		}
+		if ( 'folder' === $context ) {
+			return $paths['folder'];
+		}
+		return $paths;
+	}
+
+	/**
+	 * Gets the URL of the CSS file in the filesystem.
+	 *
+	 * @access public
+	 * @since 3.0.0
+	 * @return string
+	 */
+	public function get_url() {
+		$upload_dir = wp_upload_dir();
+		return esc_url_raw( $upload_dir['baseurl'] . '/kirki-css/styles.css' );
+	}
+
+	/**
+	 * Gets the timestamp of the file.
+	 * This will be used as "version" for cache-busting purposes.
+	 *
+	 * @access public
+	 * @since 3.0.0
+	 * @return integer|false
+	 */
+	public function get_timestamp() {
+		if ( file_exists( $this->get_path( 'file' ) ) ) {
+			return filemtime( $this->get_path( 'file' ) );
+		}
+		return false;
+	}
+
+	/**
+	 * Writes the file to disk.
+	 *
+	 * @access public
+	 * @since 3.0.0
+	 * @return bool
+	 */
+	public function write_file() {
+		$css     = array();
+		$configs = Kirki::$config;
+		foreach ( $configs as $config_id => $args ) {
+			// Get the CSS we want to write.
+			$css[ $config_id ] = apply_filters( "kirki_{$config_id}_dynamic_css", Kirki_Modules_CSS::loop_controls( $config_id ) );
+		}
+		$css = implode( $css, '' );
+
+		// If the folder doesn't exist, create it.
+		if ( ! file_exists( $this->get_path( 'folder' ) ) ) {
+			wp_mkdir_p( $this->get_path( 'folder' ) );
+		}
+
+		$filesystem = $this->get_filesystem();
+		$write_file = (bool) $filesystem->put_contents( $this->get_path( 'file' ), $css );
+		if ( ! $write_file ) {
+			$this->fallback = true;
+			set_transient( 'kirki_css_write_to_file_failed', true, HOUR_IN_SECONDS );
+		}
+		return $write_file;
+	}
+
+	/**
+	 * Gets the WP_Filesystem object.
+	 *
+	 * @access protected
+	 * @since 3.0.0
+	 * @return object
+	 */
+	protected function get_filesystem() {
+
+		// The WordPress filesystem.
+		global $wp_filesystem;
+
+		if ( empty( $wp_filesystem ) ) {
+			require_once wp_normalize_path( ABSPATH . '/wp-admin/includes/file.php' );
+			WP_Filesystem();
+		}
+		return $wp_filesystem;
+	}
+}