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EDIT: theme-editor.php

<?php /** * Theme editor administration panel. * * @package WordPress * @subpackage Administration */ /** WordPress Administration Bootstrap */ require_once __DIR__ . '/admin.php'; if ( is_multisite() && ! is_network_admin() ) { wp_redirect( network_admin_url( 'theme-editor.php' ) ); exit; } if ( ! current_user_can( 'edit_themes' ) ) { wp_die( '<p>' . __( 'Sorry, you are not allowed to edit templates for this site.' ) . '</p>' ); } $title = __( 'Edit Themes' ); $parent_file = 'themes.php'; get_current_screen()->add_help_tab( array( 'id' => 'overview', 'title' => __( 'Overview' ), 'content' => '<p>' . __( 'You can use the theme editor to edit the individual CSS and PHP files which make up your theme.' ) . '</p>' . '<p>' . __( 'Begin by choosing a theme to edit from the dropdown menu and clicking the Select button. A list then appears of the theme&#8217;s template files. Clicking once on any file name causes the file to appear in the large Editor box.' ) . '</p>' . '<p>' . __( 'For PHP files, you can use the Documentation dropdown to select from functions recognized in that file. Look Up takes you to a web page with reference material about that particular function.' ) . '</p>' . '<p id="editor-keyboard-trap-help-1">' . __( 'When using a keyboard to navigate:' ) . '</p>' . '<ul>' . '<li id="editor-keyboard-trap-help-2">' . __( 'In the editing area, the Tab key enters a tab character.' ) . '</li>' . '<li id="editor-keyboard-trap-help-3">' . __( 'To move away from this area, press the Esc key followed by the Tab key.' ) . '</li>' . '<li id="editor-keyboard-trap-help-4">' . __( 'Screen reader users: when in forms mode, you may need to press the Esc key twice.' ) . '</li>' . '</ul>' . '<p>' . __( 'After typing in your edits, click Update File.' ) . '</p>' . '<p>' . __( '<strong>Advice:</strong> Think very carefully about your site crashing if you are live-editing the theme currently in use.' ) . '</p>' . '<p>' . sprintf( /* translators: %s: Link to documentation on child themes. */ __( 'Upgrading to a newer version of the same theme will override changes made here. To avoid this, consider creating a <a href="%s">child theme</a> instead.' ), __( 'https://developer.wordpress.org/themes/advanced-topics/child-themes/' ) ) . '</p>' . ( is_network_admin() ? '<p>' . __( 'Any edits to files from this screen will be reflected on all sites in the network.' ) . '</p>' : '' ), ) ); get_current_screen()->set_help_sidebar( '<p><strong>' . __( 'For more information:' ) . '</strong></p>' . '<p>' . __( '<a href="https://developer.wordpress.org/themes/">Documentation on Theme Development</a>' ) . '</p>' . '<p>' . __( '<a href="https://wordpress.org/support/article/using-themes/">Documentation on Using Themes</a>' ) . '</p>' . '<p>' . __( '<a href="https://wordpress.org/support/article/editing-files/">Documentation on Editing Files</a>' ) . '</p>' . '<p>' . __( '<a href="https://developer.wordpress.org/themes/basics/template-tags/">Documentation on Template Tags</a>' ) . '</p>' . '<p>' . __( '<a href="https://wordpress.org/support/">Support</a>' ) . '</p>' ); wp_reset_vars( array( 'action', 'error', 'file', 'theme' ) ); if ( $theme ) { $stylesheet = $theme; } else { $stylesheet = get_stylesheet(); } $theme = wp_get_theme( $stylesheet ); if ( ! $theme->exists() ) { wp_die( __( 'The requested theme does not exist.' ) ); } if ( $theme->errors() && 'theme_no_stylesheet' === $theme->errors()->get_error_code() ) { wp_die( __( 'The requested theme does not exist.' ) . ' ' . $theme->errors()->get_error_message() ); } $allowed_files = array(); $style_files = array(); $file_types = wp_get_theme_file_editable_extensions( $theme ); foreach ( $file_types as $type ) { switch ( $type ) { case 'php': $allowed_files += $theme->get_files( 'php', -1 ); break; case 'css': $style_files = $theme->get_files( 'css', -1 ); $allowed_files['style.css'] = $style_files['style.css']; $allowed_files += $style_files; break; default: $allowed_files += $theme->get_files( $type, -1 ); break; } } // Move functions.php and style.css to the top. if ( isset( $allowed_files['functions.php'] ) ) { $allowed_files = array( 'functions.php' => $allowed_files['functions.php'] ) + $allowed_files; } if ( isset( $allowed_files['style.css'] ) ) { $allowed_files = array( 'style.css' => $allowed_files['style.css'] ) + $allowed_files; } if ( empty( $file ) ) { $relative_file = 'style.css'; $file = $allowed_files['style.css']; } else { $relative_file = wp_unslash( $file ); $file = $theme->get_stylesheet_directory() . '/' . $relative_file; } validate_file_to_edit( $file, $allowed_files ); // Handle fallback editing of file when JavaScript is not available. $edit_error = null; $posted_content = null; if ( 'POST' === $_SERVER['REQUEST_METHOD'] ) { $r = wp_edit_theme_plugin_file( wp_unslash( $_POST ) ); if ( is_wp_error( $r ) ) { $edit_error = $r; if ( check_ajax_referer( 'edit-theme_' . $stylesheet . '_' . $relative_file, 'nonce', false ) && isset( $_POST['newcontent'] ) ) { $posted_content = wp_unslash( $_POST['newcontent'] ); } } else { wp_redirect( add_query_arg( array( 'a' => 1, // This means "success" for some reason. 'theme' => $stylesheet, 'file' => $relative_file, ), admin_url( 'theme-editor.php' ) ) ); exit; } } $settings = array( 'codeEditor' => wp_enqueue_code_editor( compact( 'file' ) ), ); wp_enqueue_script( 'wp-theme-plugin-editor' ); wp_add_inline_script( 'wp-theme-plugin-editor', sprintf( 'jQuery( function( $ ) { wp.themePluginEditor.init( $( "#template" ), %s ); } )', wp_json_encode( $settings ) ) ); wp_add_inline_script( 'wp-theme-plugin-editor', 'wp.themePluginEditor.themeOrPlugin = "theme";' ); require_once ABSPATH . 'wp-admin/admin-header.php'; update_recently_edited( $file ); if ( ! is_file( $file ) ) { $error = true; } $content = ''; if ( ! empty( $posted_content ) ) { $content = $posted_content; } elseif ( ! $error && filesize( $file ) > 0 ) { $f = fopen( $file, 'r' ); $content = fread( $f, filesize( $file ) ); if ( '.php' === substr( $file, strrpos( $file, '.' ) ) ) { $functions = wp_doc_link_parse( $content ); $docs_select = '<select name="docs-list" id="docs-list">'; $docs_select .= '<option value="">' . esc_attr__( 'Function Name&hellip;' ) . '</option>'; foreach ( $functions as $function ) { $docs_select .= '<option value="' . esc_attr( urlencode( $function ) ) . '">' . htmlspecialchars( $function ) . '()</option>'; } $docs_select .= '</select>'; } $content = esc_textarea( $content ); } $file_description = get_file_description( $relative_file ); $file_show = array_search( $file, array_filter( $allowed_files ), true ); $description = esc_html( $file_description ); if ( $file_description !== $file_show ) { $description .= ' <span>(' . esc_html( $file_show ) . ')</span>'; } ?> <div class="wrap"> <h1><?php echo esc_html( $title ); ?></h1> <?php if ( isset( $_GET['a'] ) ) : ?> <div id="message" class="updated notice is-dismissible"> <p><?php _e( 'File edited successfully.' ); ?></p> </div> <?php elseif ( is_wp_error( $edit_error ) ) : ?> <div id="message" class="notice notice-error"> <p><?php _e( 'There was an error while trying to update the file. You may need to fix something and try updating again.' ); ?></p> <pre><?php echo esc_html( $edit_error->get_error_message() ? $edit_error->get_error_message() : $edit_error->get_error_code() ); ?></pre> </div> <?php endif; ?> <?php if ( preg_match( '/\.css$/', $file ) ) : ?> <div id="message" class="notice-info notice"> <p><strong><?php _e( 'Did you know?' ); ?></strong></p> <p> <?php printf( /* translators: %s: Link to Custom CSS section in the Customizer. */ __( 'There&#8217;s no need to change your CSS here &mdash; you can edit and live preview CSS changes in the <a href="%s">built-in CSS editor</a>.' ), esc_url( add_query_arg( 'autofocus[section]', 'custom_css', admin_url( 'customize.php' ) ) ) ); ?> </p> </div> <?php endif; ?> <div class="fileedit-sub"> <div class="alignleft"> <h2> <?php echo $theme->display( 'Name' ); if ( $description ) { echo ': ' . $description;} ?> </h2> </div> <div class="alignright"> <form action="theme-editor.php" method="get"> <strong><label for="theme"><?php _e( 'Select theme to edit:' ); ?> </label></strong> <select name="theme" id="theme"> <?php foreach ( wp_get_themes( array( 'errors' => null ) ) as $a_stylesheet => $a_theme ) { if ( $a_theme->errors() && 'theme_no_stylesheet' === $a_theme->errors()->get_error_code() ) { continue; } $selected = ( $a_stylesheet === $stylesheet ) ? ' selected="selected"' : ''; echo "\n\t" . '<option value="' . esc_attr( $a_stylesheet ) . '"' . $selected . '>' . $a_theme->display( 'Name' ) . '</option>'; } ?> </select> <?php submit_button( __( 'Select' ), '', 'Submit', false ); ?> </form> </div> <br class="clear" /> </div> <?php if ( $theme->errors() ) { echo '<div class="error"><p><strong>' . __( 'This theme is broken.' ) . '</strong> ' . $theme->errors()->get_error_message() . '</p></div>'; } ?> <div id="templateside"> <h2 id="theme-files-label"><?php _e( 'Theme Files' ); ?></h2> <ul role="tree" aria-labelledby="theme-files-label"> <?php if ( $theme->parent() ) : ?> <li class="howto"> <?php printf( /* translators: %s: Link to edit parent theme. */ __( 'This child theme inherits templates from a parent theme, %s.' ), sprintf( '<a href="%s">%s</a>', self_admin_url( 'theme-editor.php?theme=' . urlencode( $theme->get_template() ) ), $theme->parent()->display( 'Name' ) ) ); ?> </li> <?php endif; ?> <li role="treeitem" tabindex="-1" aria-expanded="true" aria-level="1" aria-posinset="1" aria-setsize="1"> <ul role="group"> <?php wp_print_theme_file_tree( wp_make_theme_file_tree( $allowed_files ) ); ?> </ul> </li> </ul> </div> <?php if ( $error ) : echo '<div class="error"><p>' . __( 'File does not exist! Please double check the name and try again.' ) . '</p></div>'; else : ?> <form name="template" id="template" action="theme-editor.php" method="post"> <?php wp_nonce_field( 'edit-theme_' . $stylesheet . '_' . $relative_file, 'nonce' ); ?> <div> <label for="newcontent" id="theme-plugin-editor-label"><?php _e( 'Selected file content:' ); ?></label> <textarea cols="70" rows="30" name="newcontent" id="newcontent" aria-describedby="editor-keyboard-trap-help-1 editor-keyboard-trap-help-2 editor-keyboard-trap-help-3 editor-keyboard-trap-help-4"><?php echo $content; ?></textarea> <input type="hidden" name="action" value="update" /> <input type="hidden" name="file" value="<?php echo esc_attr( $relative_file ); ?>" /> <input type="hidden" name="theme" value="<?php echo esc_attr( $theme->get_stylesheet() ); ?>" /> </div> <?php if ( ! empty( $functions ) ) : ?> <div id="documentation" class="hide-if-no-js"> <label for="docs-list"><?php _e( 'Documentation:' ); ?></label> <?php echo $docs_select; ?> <input disabled id="docs-lookup" type="button" class="button" value="<?php esc_attr_e( 'Look Up' ); ?>" onclick="if ( '' != jQuery('#docs-list').val() ) { window.open( 'https://api.wordpress.org/core/handbook/1.0/?function=' + escape( jQuery( '#docs-list' ).val() ) + '&amp;locale=<?php echo urlencode( get_user_locale() ); ?>&amp;version=<?php echo urlencode( get_bloginfo( 'version' ) ); ?>&amp;redirect=true'); }" /> </div> <?php endif; ?> <div> <div class="editor-notices"> <?php if ( is_child_theme() && $theme->get_stylesheet() === get_template() ) : ?> <div class="notice notice-warning inline"> <p> <?php if ( is_writeable( $file ) ) : ?> <strong><?php _e( 'Caution:' ); ?></strong> <?php endif; ?> <?php _e( 'This is a file in your current parent theme.' ); ?> </p> </div> <?php endif; ?> </div> <?php if ( is_writeable( $file ) ) : ?> <p class="submit"> <?php submit_button( __( 'Update File' ), 'primary', 'submit', false ); ?> <span class="spinner"></span> </p> <?php else : ?> <p><em> <?php printf( /* translators: %s: Documentation URL. */ __( 'You need to make this file writable before you can save your changes. See <a href="%s">Changing File Permissions</a> for more information.' ), __( 'https://wordpress.org/support/article/changing-file-permissions/' ) ); ?> </em></p> <?php endif; ?> </div> <?php wp_print_file_editor_templates(); ?> </form> <?php endif; // End if $error. ?> <br class="clear" /> </div> <?php $dismissed_pointers = explode( ',', (string) get_user_meta( get_current_user_id(), 'dismissed_wp_pointers', true ) ); if ( ! in_array( 'theme_editor_notice', $dismissed_pointers, true ) ) : // Get a back URL. $referer = wp_get_referer(); $excluded_referer_basenames = array( 'theme-editor.php', 'wp-login.php' ); if ( $referer && ! in_array( basename( parse_url( $referer, PHP_URL_PATH ) ), $excluded_referer_basenames, true ) ) { $return_url = $referer; } else { $return_url = admin_url( '/' ); } ?> <div id="file-editor-warning" class="notification-dialog-wrap file-editor-warning hide-if-no-js hidden"> <div class="notification-dialog-background"></div> <div class="notification-dialog"> <div class="file-editor-warning-content"> <div class="file-editor-warning-message"> <h1><?php _e( 'Heads up!' ); ?></h1> <p> <?php _e( 'You appear to be making direct edits to your theme in the WordPress dashboard. We recommend that you don&#8217;t! Editing your theme directly could break your site and your changes may be lost in future updates.' ); ?> </p> <?php if ( ! $theme->parent() ) { echo '<p>'; printf( /* translators: %s: Link to documentation on child themes. */ __( 'If you need to tweak more than your theme&#8217;s CSS, you might want to try <a href="%s">making a child theme</a>.' ), esc_url( __( 'https://developer.wordpress.org/themes/advanced-topics/child-themes/' ) ) ); echo '</p>'; } ?> <p><?php _e( 'If you decide to go ahead with direct edits anyway, use a file manager to create a copy with a new name and hang on to the original. That way, you can re-enable a functional version if something goes wrong.' ); ?></p> </div> <p> <a class="button file-editor-warning-go-back" href="<?php echo esc_url( $return_url ); ?>"><?php _e( 'Go back' ); ?></a> <button type="button" class="file-editor-warning-dismiss button button-primary"><?php _e( 'I understand' ); ?></button> </p> </div> </div> </div> <?php endif; // Editor warning notice. require_once ABSPATH . 'wp-admin/admin-footer.php';

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