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455 lines
16 KiB
455 lines
16 KiB
9 months ago
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<?php
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/**
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* TablePress CSS Class
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*
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* @package TablePress
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* @subpackage CSS
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* @author Tobias Bäthge
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* @since 1.1.0
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*/
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// Prohibit direct script loading.
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defined( 'ABSPATH' ) || die( 'No direct script access allowed!' );
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/**
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* TablePress CSS Class
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*
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* @package TablePress
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* @subpackage CSS
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* @author Tobias Bäthge
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* @since 1.1.0
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*/
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class TablePress_CSS {
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/**
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* Sanitize and tidy a string of CSS.
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*
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* @since 1.1.0
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*
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* @param string $css CSS code.
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* @return string Sanitized and tidied CSS code.
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*/
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public function sanitize_css( string $css ): string {
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$csstidy = TablePress::load_class( 'TablePress_CSSTidy', 'class.csstidy.php', 'libraries/csstidy' );
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// Sanitization and not just tidying for users without enough privileges.
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if ( ! current_user_can( 'unfiltered_html' ) ) {
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// Let "arrows" survive, otherwise this might be recognized as the beginning of an HTML tag and removed with other stuff behind it.
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$css = str_replace( '<=', '<=', $css );
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// Remove all HTML tags.
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$css = wp_kses( $css, 'strip' );
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// KSES replaces single ">" with ">", but ">" is valid in CSS selectors.
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$css = str_replace( '>', '>', $css );
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// strip_tags again, because of the just added ">" (KSES for a second time would again bring the ">" problem).
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$css = strip_tags( $css );
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}
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$csstidy->set_cfg( 'remove_bslash', false );
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$csstidy->set_cfg( 'compress_colors', false );
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$csstidy->set_cfg( 'compress_font-weight', false );
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$csstidy->set_cfg( 'lowercase_s', false );
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$csstidy->set_cfg( 'optimise_shorthands', false );
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$csstidy->set_cfg( 'remove_last_;', false );
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$csstidy->set_cfg( 'case_properties', false );
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$csstidy->set_cfg( 'sort_properties', false );
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$csstidy->set_cfg( 'sort_selectors', false );
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$csstidy->set_cfg( 'discard_invalid_selectors', false );
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$csstidy->set_cfg( 'discard_invalid_properties', true );
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$csstidy->set_cfg( 'merge_selectors', false );
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$csstidy->set_cfg( 'css_level', 'CSS3.0' );
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$csstidy->set_cfg( 'preserve_css', true );
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$csstidy->set_cfg( 'timestamp', false );
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$csstidy->set_cfg( 'template', 'default' );
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$csstidy->parse( $css );
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return $csstidy->print->plain();
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}
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/**
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* Minify a string of CSS code, that should have been sanitized/tidied before.
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*
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* @since 1.1.0
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*
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* @param string $css CSS code.
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* @return string Minified CSS code.
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*/
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public function minify_css( string $css ): string {
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$csstidy = TablePress::load_class( 'TablePress_CSSTidy', 'class.csstidy.php', 'libraries/csstidy' );
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$csstidy->set_cfg( 'remove_bslash', false );
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$csstidy->set_cfg( 'compress_colors', true );
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$csstidy->set_cfg( 'compress_font-weight', true );
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$csstidy->set_cfg( 'lowercase_s', false );
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$csstidy->set_cfg( 'optimise_shorthands', 1 );
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$csstidy->set_cfg( 'remove_last_;', true );
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$csstidy->set_cfg( 'case_properties', false );
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$csstidy->set_cfg( 'sort_properties', false );
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$csstidy->set_cfg( 'sort_selectors', false );
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$csstidy->set_cfg( 'discard_invalid_selectors', false );
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$csstidy->set_cfg( 'discard_invalid_properties', true );
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$csstidy->set_cfg( 'merge_selectors', false );
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$csstidy->set_cfg( 'css_level', 'CSS3.0' );
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$csstidy->set_cfg( 'preserve_css', false );
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$csstidy->set_cfg( 'timestamp', false );
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$csstidy->set_cfg( 'template', 'highest' );
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$csstidy->parse( $css );
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return $csstidy->print->plain();
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}
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/**
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* Get the location (file path or URL) of the "Custom CSS" file, depending on whether it's a Multisite install or not.
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*
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* @since 1.0.0
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*
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* @param string $type "normal" version, "minified" version, or "combined" (with TablePress Default CSS) version.
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* @param string $location "path" or "url", for file path or URL.
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* @return string Full file path or full URL for the "Custom CSS" file.
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*/
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public function get_custom_css_location( string $type, string $location ): string {
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switch ( $type ) {
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case 'combined':
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$file = 'tablepress-combined.min.css';
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break;
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case 'minified':
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$file = 'tablepress-custom.min.css';
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break;
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case 'normal':
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default:
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$file = 'tablepress-custom.css';
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break;
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}
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if ( is_multisite() ) {
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// Multisite installation: Use /wp-content/uploads/sites/<ID>/.
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$upload_location = wp_upload_dir();
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} else {
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// Singlesite installation: Use /wp-content/.
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$upload_location = array(
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'basedir' => WP_CONTENT_DIR,
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'baseurl' => content_url(),
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);
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}
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switch ( $location ) {
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case 'url':
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$url = set_url_scheme( $upload_location['baseurl'] . '/' . $file );
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/**
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* Filters the URL from which the "Custom CSS" file is loaded.
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*
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* @since 1.0.0
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*
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* @param string $url URL of the "Custom CSS" file.
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* @param string $file File name of the "Custom CSS" file.
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* @param string $type Type of the "Custom CSS" file ("normal", "minified", or "combined").
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*/
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$url = apply_filters( 'tablepress_custom_css_url', $url, $file, $type );
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return $url;
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// break; // unreachable.
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case 'path':
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$path = $upload_location['basedir'] . '/' . $file;
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/**
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* Filters the file path on the server from which the "Custom CSS" file is loaded.
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*
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* @since 1.0.0
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*
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* @param string $path File path of the "Custom CSS" file.
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* @param string $file File name of the "Custom CSS" file.
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* @param string $type Type of the "Custom CSS" file ("normal", "minified", or "combined").
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*/
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$path = apply_filters( 'tablepress_custom_css_file_name', $path, $file, $type );
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return $path;
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// break; // unreachable.
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default:
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// Return an empty string if no valid location was provided.
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return '';
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// break; // unreachable.
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}
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}
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/**
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* Load the contents of the file with the "Custom CSS".
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*
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* @since 1.0.0
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*
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* @param string $type Optional. Whether to load "normal" version or "minified" version. Default "normal".
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* @return string|false Custom CSS on success, false on error.
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*/
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public function load_custom_css_from_file( string $type = 'normal' ) /* : string|false */ {
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$filename = $this->get_custom_css_location( $type, 'path' );
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// Check if file name is valid (0 means yes).
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if ( 0 !== validate_file( $filename ) ) {
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return false;
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}
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if ( ! @is_file( $filename ) ) { // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
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return false;
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}
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if ( ! @is_readable( $filename ) ) { // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
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return false;
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}
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return file_get_contents( $filename );
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}
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/**
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* Loads the contents of the file with the TablePress Default CSS,
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* either for left-to-right (LTR) or right-to-left (RTL), in minified form.
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*
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* @since 1.1.0
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* @since 2.0.0 Added the `$load_rtl` parameter.
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*
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* @param bool $load_rtl Optional. Whether to load LTR or RTL version. Default LTR.
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* @return string|false TablePress Default CSS on success, false on error.
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*/
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public function load_default_css_from_file( bool $load_rtl = false ) /* : string|false */ {
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$rtl = $load_rtl ? '-rtl' : '';
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$filename = TABLEPRESS_ABSPATH . "css/build/default{$rtl}.css";
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// Check if file name is valid (0 means yes).
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if ( 0 !== validate_file( $filename ) ) {
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return false;
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}
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if ( ! @is_file( $filename ) ) { // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
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return false;
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}
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if ( ! @is_readable( $filename ) ) { // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
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return false;
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}
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return file_get_contents( $filename );
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}
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/**
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* Try to save "Custom CSS" to a file (requires "direct" method in WP_Filesystem, or stored FTP credentials).
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*
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* @since 1.1.0
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*
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* @param string $custom_css_normal Custom CSS code to be saved.
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* @param string $custom_css_minified Minified CSS code to be saved.
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* @return bool True on success, false on failure.
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*/
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public function save_custom_css_to_file( string $custom_css_normal, string $custom_css_minified ): bool {
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/**
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* Filters whether the "Custom CSS" code shall be saved to a file on the server.
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*
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* @since 1.1.0
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*
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* @param bool $save Whether to save the "Custom CSS" to a file. Default true.
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*/
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if ( ! apply_filters( 'tablepress_save_custom_css_to_file', true ) ) {
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return false;
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}
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// Start capturing the output, to later prevent it.
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ob_start();
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$credentials = request_filesystem_credentials( '', '', false, '', null, false );
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/*
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* Do we have credentials already? (Otherwise the form will have been rendered, which is not supported here.)
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* Or, if we have credentials, are they valid?
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*/
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if ( false === $credentials || ! WP_Filesystem( $credentials ) ) { // @phpstan-ignore-line
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ob_end_clean();
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return false;
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}
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// We have valid access to the filesystem now -> try to save the files.
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return $this->_custom_css_save_helper( $custom_css_normal, $custom_css_minified );
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}
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/**
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* Save "Custom CSS" to files, delete "Custom CSS" files, or return HTML for the credentials form.
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*
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* Only used from "Plugin Options" screen, save_custom_css_to_file() is used in cases where no form output/redirection is possible (e.g. during plugin updates).
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*
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* @since 1.0.0
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*
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* @param string $custom_css_normal Custom CSS code to be saved. If empty, files will be deleted.
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* @param string $custom_css_minified Minified CSS code to be saved.
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* @return bool|string True on success, false on failure, or string of HTML for the credentials form for the WP_Filesystem API, if necessary.
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*/
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public function save_custom_css_to_file_plugin_options( string $custom_css_normal, string $custom_css_minified ) /* : bool|string */ {
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/** This filter is documented in classes/class-css.php */
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if ( ! apply_filters( 'tablepress_save_custom_css_to_file', true ) ) {
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return false;
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}
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// Start capturing the output, to get HTML of the credentials form (if needed).
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ob_start();
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$credentials = request_filesystem_credentials( '', '', false, '', null, false );
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// Do we have credentials already? Otherwise the form will have been rendered already.
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if ( false === $credentials ) {
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$form_data = ob_get_clean();
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$form_data = str_replace( 'name="upgrade" id="upgrade" class="button"', 'name="upgrade" id="upgrade" class="button button-primary button-large"', $form_data ); // @phpstan-ignore-line
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return $form_data;
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}
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// We have received credentials, but don't know if they are valid yet.
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if ( ! WP_Filesystem( $credentials ) ) { // @phpstan-ignore-line
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// Credentials failed, so ask again (with $error flag true).
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request_filesystem_credentials( '', '', true, '', null, false );
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$form_data = ob_get_clean();
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$form_data = str_replace( 'name="upgrade" id="upgrade" class="button"', 'name="upgrade" id="upgrade" class="button button-primary button-large"', $form_data ); // @phpstan-ignore-line
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return $form_data;
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}
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// We have valid access to the filesystem now -> try to save the files, or delete them if the "Custom CSS" is empty.
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if ( '' !== $custom_css_normal ) {
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return $this->_custom_css_save_helper( $custom_css_normal, $custom_css_minified );
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} else {
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return $this->_custom_css_delete_helper();
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}
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}
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/**
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* Save "Custom CSS" to files, if validated access to the WP_Filesystem exists.
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*
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* Helper function to prevent code duplication.
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*
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* @since 1.1.0
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*
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* @global WP_Filesystem_* $wp_filesystem WordPress file system abstraction object.
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* @see save_custom_css_to_file()
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* @see save_custom_css_to_file_plugin_options()
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*
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* @param string $custom_css_normal Custom CSS code to be saved.
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* @param string $custom_css_minified Minified CSS code to be saved.
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* @return bool True on success, false on failure.
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*/
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protected function _custom_css_save_helper( string $custom_css_normal, string $custom_css_minified ): bool {
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global $wp_filesystem;
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/*
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* WP_CONTENT_DIR and (FTP-)Content-Dir can be different (e.g. if FTP working dir is /).
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* We need to account for that by replacing the path difference in the filename.
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*/
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$path_difference = str_replace( $wp_filesystem->wp_content_dir(), '', trailingslashit( WP_CONTENT_DIR ) );
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$css_types = array( 'normal', 'minified', 'combined' );
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$default_css_minified = $this->load_default_css_from_file( false );
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if ( false === $default_css_minified ) {
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$default_css_minified = '';
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} else {
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// Change relative URLs to web font files to absolute URLs, as combining the CSS files and saving to another directory breaks the relative URLs.
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$absolute_path = plugins_url( 'css/build/tablepress.', TABLEPRESS__FILE__ );
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// Make the absolute URL protocol-relative to prevent mixed content warnings.
|
||
|
|
$absolute_path = str_replace( array( 'http:', 'https:' ), '', $absolute_path );
|
||
|
|
$default_css_minified = str_replace( 'url(tablepress.', 'url(' . $absolute_path, $default_css_minified );
|
||
|
|
}
|
||
|
|
$file_content = array(
|
||
|
|
'normal' => $custom_css_normal,
|
||
|
|
'minified' => $custom_css_minified,
|
||
|
|
'combined' => $default_css_minified . $custom_css_minified,
|
||
|
|
);
|
||
|
|
|
||
|
|
$total_result = true; // Whether all files were saved successfully.
|
||
|
|
foreach ( $css_types as $css_type ) {
|
||
|
|
$filename = $this->get_custom_css_location( $css_type, 'path' );
|
||
|
|
// Check if filename is valid (0 means yes).
|
||
|
|
if ( 0 !== validate_file( $filename ) ) {
|
||
|
|
$total_result = false;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
if ( '' !== $path_difference ) {
|
||
|
|
$filename = str_replace( $path_difference, '', $filename );
|
||
|
|
}
|
||
|
|
$result = $wp_filesystem->put_contents( $filename, $file_content[ $css_type ], FS_CHMOD_FILE );
|
||
|
|
$total_result = ( $total_result && $result );
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->_flush_caching_plugins_css_minify_caches();
|
||
|
|
|
||
|
|
return $total_result;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Delete the "Custom CSS" files, if possible.
|
||
|
|
*
|
||
|
|
* @since 1.0.0
|
||
|
|
*
|
||
|
|
* @return bool True on success, false on failure.
|
||
|
|
*/
|
||
|
|
public function delete_custom_css_files(): bool {
|
||
|
|
// Start capturing the output, to later prevent it.
|
||
|
|
ob_start();
|
||
|
|
$credentials = request_filesystem_credentials( '', '', false, '', null, false );
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Do we have credentials already? (Otherwise the form will have been rendered, which is not supported here.)
|
||
|
|
* Or, if we have credentials, are they valid?
|
||
|
|
*/
|
||
|
|
if ( false === $credentials || ! WP_Filesystem( $credentials ) ) { // @phpstan-ignore-line
|
||
|
|
ob_end_clean();
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// We have valid access to the filesystem now -> try to delete the files.
|
||
|
|
return $this->_custom_css_delete_helper();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Delete "Custom CSS" files, if validated access to the WP_Filesystem exists.
|
||
|
|
*
|
||
|
|
* Helper function to prevent code duplication
|
||
|
|
*
|
||
|
|
* @since 1.1.0
|
||
|
|
*
|
||
|
|
* @global WP_Filesystem_* $wp_filesystem WordPress file system abstraction object.
|
||
|
|
* @see delete_custom_css_files()
|
||
|
|
* @see save_custom_css_to_file_plugin_options()
|
||
|
|
*
|
||
|
|
* @return bool True on success, false on failure.
|
||
|
|
*/
|
||
|
|
protected function _custom_css_delete_helper(): bool {
|
||
|
|
global $wp_filesystem;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* WP_CONTENT_DIR and (FTP-)Content-Dir can be different (e.g. if FTP working dir is /).
|
||
|
|
* We need to account for that by replacing the path difference in the filename.
|
||
|
|
*/
|
||
|
|
$path_difference = str_replace( $wp_filesystem->wp_content_dir(), '', trailingslashit( WP_CONTENT_DIR ) );
|
||
|
|
|
||
|
|
$css_types = array( 'normal', 'minified', 'combined' );
|
||
|
|
$total_result = true; // Whether all files were deleted successfully.
|
||
|
|
foreach ( $css_types as $css_type ) {
|
||
|
|
$filename = $this->get_custom_css_location( $css_type, 'path' );
|
||
|
|
// Check if filename is valid (0 means yes).
|
||
|
|
if ( 0 !== validate_file( $filename ) ) {
|
||
|
|
$total_result = false;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
if ( '' !== $path_difference ) {
|
||
|
|
$filename = str_replace( $path_difference, '', $filename );
|
||
|
|
}
|
||
|
|
// We have valid access to the filesystem now -> try to delete the file.
|
||
|
|
if ( $wp_filesystem->exists( $filename ) ) {
|
||
|
|
$result = $wp_filesystem->delete( $filename );
|
||
|
|
$total_result = ( $total_result && $result );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->_flush_caching_plugins_css_minify_caches();
|
||
|
|
|
||
|
|
return $total_result;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Flush the CSS minification caches of common caching plugins.
|
||
|
|
*
|
||
|
|
* @since 1.4.0
|
||
|
|
*/
|
||
|
|
protected function _flush_caching_plugins_css_minify_caches(): void {
|
||
|
|
/** This filter is documented in models/model-table.php */
|
||
|
|
if ( ! apply_filters( 'tablepress_flush_caching_plugins_caches', true ) ) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
// W3 Total Cache.
|
||
|
|
if ( function_exists( 'w3tc_minify_flush' ) ) {
|
||
|
|
w3tc_minify_flush();
|
||
|
|
}
|
||
|
|
// WP Fastest Cache.
|
||
|
|
if ( isset( $GLOBALS['wp_fastest_cache'] ) && is_callable( array( $GLOBALS['wp_fastest_cache'], 'deleteCache' ) ) ) {
|
||
|
|
$GLOBALS['wp_fastest_cache']->deleteCache( true ); // @phpstan-ignore-line
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
} // class TablePress_CSS
|