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<?php /** * CMB2 Utilities * * @since 1.1.0 * * @category WordPress_Plugin * @package CMB2 * @author CMB2 team * @license GPL-2.0+ * @link https://cmb2.io */ class CMB2_Utils { /** * The WordPress ABSPATH constant. * * @var string * @since 2.2.3 */ protected static $ABSPATH = ABSPATH; /** * The url which is used to load local resources. * * @var string * @since 2.0.0 */ protected static $url = ''; /** * Utility method that attempts to get an attachment's ID by it's url * * @since 1.0.0 * @param string $img_url Attachment url. * @return int|false Attachment ID or false */ public static function image_id_from_url( $img_url ) { $attachment_id = 0; $dir = wp_upload_dir(); // Is URL in uploads directory? if ( false === strpos( $img_url, $dir['baseurl'] . '/' ) ) { return false; } $file = basename( $img_url ); $query_args = array( 'post_type' => 'attachment', 'post_status' => 'inherit', 'fields' => 'ids', 'meta_query' => array( array( 'value' => $file, 'compare' => 'LIKE', 'key' => '_wp_attachment_metadata', ), ), ); $query = new WP_Query( $query_args ); if ( $query->have_posts() ) { foreach ( $query->posts as $post_id ) { $meta = wp_get_attachment_metadata( $post_id ); $original_file = basename( $meta['file'] ); $cropped_image_files = isset( $meta['sizes'] ) ? wp_list_pluck( $meta['sizes'], 'file' ) : array(); if ( $original_file === $file || in_array( $file, $cropped_image_files ) ) { $attachment_id = $post_id; break; } } } return 0 === $attachment_id ? false : $attachment_id; } /** * Utility method to get a combined list of default and custom registered image sizes * * @since 2.2.4 * @link http://core.trac.wordpress.org/ticket/18947 * @global array $_wp_additional_image_sizes * @return array The image sizes */ public static function get_available_image_sizes() { global $_wp_additional_image_sizes; $default_image_sizes = array( 'thumbnail', 'medium', 'large' ); foreach ( $default_image_sizes as $size ) { $image_sizes[ $size ] = array( 'height' => intval( get_option( "{$size}_size_h" ) ), 'width' => intval( get_option( "{$size}_size_w" ) ), 'crop' => get_option( "{$size}_crop" ) ? get_option( "{$size}_crop" ) : false, ); } if ( isset( $_wp_additional_image_sizes ) && count( $_wp_additional_image_sizes ) ) { $image_sizes = array_merge( $image_sizes, $_wp_additional_image_sizes ); } return $image_sizes; } /** * Utility method to return the closest named size from an array of values * * Based off of WordPress's image_get_intermediate_size() * If the size matches an existing size then it will be used. If there is no * direct match, then the nearest image size larger than the specified size * will be used. If nothing is found, then the function will return false. * Uses get_available_image_sizes() to get all available sizes. * * @since 2.2.4 * @param array|string $size Image size. Accepts an array of width and height (in that order). * @return false|string Named image size e.g. 'thumbnail' */ public static function get_named_size( $size ) { $data = array(); // Find the best match when '$size' is an array. if ( is_array( $size ) ) { $image_sizes = self::get_available_image_sizes(); $candidates = array(); foreach ( $image_sizes as $_size => $data ) { // If there's an exact match to an existing image size, short circuit. if ( $data['width'] == $size[0] && $data['height'] == $size[1] ) { $candidates[ $data['width'] * $data['height'] ] = array( $_size, $data ); break; } // If it's not an exact match, consider larger sizes with the same aspect ratio. if ( $data['width'] >= $size[0] && $data['height'] >= $size[1] ) { /** * To test for varying crops, we constrain the dimensions of the larger image * to the dimensions of the smaller image and see if they match. */ if ( $data['width'] > $size[0] ) { $constrained_size = wp_constrain_dimensions( $data['width'], $data['height'], $size[0] ); $expected_size = array( $size[0], $size[1] ); } else { $constrained_size = wp_constrain_dimensions( $size[0], $size[1], $data['width'] ); $expected_size = array( $data['width'], $data['height'] ); } // If the image dimensions are within 1px of the expected size, we consider it a match. $matched = ( abs( $constrained_size[0] - $expected_size[0] ) <= 1 && abs( $constrained_size[1] - $expected_size[1] ) <= 1 ); if ( $matched ) { $candidates[ $data['width'] * $data['height'] ] = array( $_size, $data ); } } } if ( ! empty( $candidates ) ) { // Sort the array by size if we have more than one candidate. if ( 1 < count( $candidates ) ) { ksort( $candidates ); } $data = array_shift( $candidates ); $data = $data[0]; } elseif ( ! empty( $image_sizes['thumbnail'] ) && $image_sizes['thumbnail']['width'] >= $size[0] && $image_sizes['thumbnail']['width'] >= $size[1] ) { /* * When the size requested is smaller than the thumbnail dimensions, we * fall back to the thumbnail size. */ $data = 'thumbnail'; } else { return false; } } elseif ( ! empty( $image_sizes[ $size ] ) ) { $data = $size; }// End if. // If we still don't have a match at this point, return false. if ( empty( $data ) ) { return false; } return $data; } /** * Utility method that returns time string offset by timezone * * @since 1.0.0 * @param string $tzstring Time string. * @return string Offset time string */ public static function timezone_offset( $tzstring ) { $tz_offset = 0; if ( ! empty( $tzstring ) && is_string( $tzstring ) ) { if ( 'UTC' === substr( $tzstring, 0, 3 ) ) { $tzstring = str_replace( array( ':15', ':30', ':45' ), array( '.25', '.5', '.75' ), $tzstring ); return intval( floatval( substr( $tzstring, 3 ) ) * HOUR_IN_SECONDS ); } try { $date_time_zone_selected = new DateTimeZone( $tzstring ); $tz_offset = timezone_offset_get( $date_time_zone_selected, date_create() ); } catch ( Exception $e ) { self::log_if_debug( __METHOD__, __LINE__, $e->getMessage() ); } } return $tz_offset; } /** * Utility method that returns a timezone string representing the default timezone for the site. * * Roughly copied from WordPress, as get_option('timezone_string') will return * an empty string if no value has been set on the options page. * A timezone string is required by the wp_timezone_choice() used by the * select_timezone field. * * @since 1.0.0 * @return string Timezone string */ public static function timezone_string() { $current_offset = get_option( 'gmt_offset' ); $tzstring = get_option( 'timezone_string' ); // Remove old Etc mappings. Fallback to gmt_offset. if ( false !== strpos( $tzstring, 'Etc/GMT' ) ) { $tzstring = ''; } if ( empty( $tzstring ) ) { // Create a UTC+- zone if no timezone string exists. if ( 0 == $current_offset ) { $tzstring = 'UTC+0'; } elseif ( $current_offset < 0 ) { $tzstring = 'UTC' . $current_offset; } else { $tzstring = 'UTC+' . $current_offset; } } return $tzstring; } /** * Returns a unix timestamp, first checking if value already is a timestamp. * * @since 2.0.0 * @param string|int $string Possible timestamp string. * @return int Time stamp. */ public static function make_valid_time_stamp( $string ) { if ( ! $string ) { return 0; } $valid = self::is_valid_time_stamp( $string ); if ( $valid ) { $timestamp = (int) $string; $length = strlen( (string) $timestamp ); $unixlength = strlen( (string) time() ); $diff = $length - $unixlength; // If value is larger than a unix timestamp, we need to round to the // nearest unix timestamp (in seconds). if ( $diff > 0 ) { $divider = (int) '1' . str_repeat( '0', $diff ); $timestamp = round( $timestamp / $divider ); } } else { $timestamp = @strtotime( (string) $string ); } return $timestamp; } /** * Determine if a value is a valid date. * * @since 2.9.1 * @param mixed $date Value to check. * @return boolean Whether value is a valid date */ public static function is_valid_date( $date ) { return ( is_string( $date ) && @strtotime( $date ) ) || self::is_valid_time_stamp( $date ); } /** * Determine if a value is a valid timestamp * * @since 2.0.0 * @param mixed $timestamp Value to check. * @return boolean Whether value is a valid timestamp */ public static function is_valid_time_stamp( $timestamp ) { return (string) (int) $timestamp === (string) $timestamp && $timestamp <= PHP_INT_MAX && $timestamp >= ~PHP_INT_MAX; } /** * Checks if a value is 'empty'. Still accepts 0. * * @since 2.0.0 * @param mixed $value Value to check. * @return bool True or false */ public static function isempty( $value ) { return null === $value || '' === $value || false === $value || array() === $value; } /** * Checks if a value is not 'empty'. 0 doesn't count as empty. * * @since 2.2.2 * @param mixed $value Value to check. * @return bool True or false */ public static function notempty( $value ) { return null !== $value && '' !== $value && false !== $value && array() !== $value; } /** * Filters out empty values (not including 0). * * @since 2.2.2 * @param mixed $value Value to check. * @return array True or false. */ public static function filter_empty( $value ) { return array_filter( $value, array( __CLASS__, 'notempty' ) ); } /** * Insert a single array item inside another array at a set position * * @since 2.0.2 * @param array $array Array to modify. Is passed by reference, and no return is needed. Passed by reference. * @param array $new New array to insert. * @param int $position Position in the main array to insert the new array. */ public static function array_insert( &$array, $new, $position ) { $before = array_slice( $array, 0, $position - 1 ); $after = array_diff_key( $array, $before ); $array = array_merge( $before, $new, $after ); } /** * Defines the url which is used to load local resources. * This may need to be filtered for local Window installations. * If resources do not load, please check the wiki for details. * * @since 1.0.1 * * @param string $path URL path. * @return string URL to CMB2 resources */ public static function url( $path = '' ) { if ( self::$url ) { return self::$url . $path; } $cmb2_url = self::get_url_from_dir( cmb2_dir() ); /** * Filter the CMB location url. * * @param string $cmb2_url Currently registered url. */ self::$url = trailingslashit( apply_filters( 'cmb2_meta_box_url', $cmb2_url, CMB2_VERSION ) ); return self::$url . $path; } /** * Converts a system path to a URL * * @since 2.2.2 * @param string $dir Directory path to convert. * @return string Converted URL. */ public static function get_url_from_dir( $dir ) { $dir = self::normalize_path( $dir ); // Let's test if We are in the plugins or mu-plugins dir. $test_dir = trailingslashit( $dir ) . 'unneeded.php'; if ( 0 === strpos( $test_dir, self::normalize_path( WPMU_PLUGIN_DIR ) ) || 0 === strpos( $test_dir, self::normalize_path( WP_PLUGIN_DIR ) ) ) { // Ok, then use plugins_url, as it is more reliable. return trailingslashit( plugins_url( '', $test_dir ) ); } // Ok, now let's test if we are in the theme dir. $theme_root = self::normalize_path( get_theme_root() ); if ( 0 === strpos( $dir, $theme_root ) ) { // Ok, then use get_theme_root_uri. return set_url_scheme( trailingslashit( str_replace( untrailingslashit( $theme_root ), untrailingslashit( get_theme_root_uri() ), $dir ) ) ); } // Check to see if it's anywhere in the root directory. $site_dir = self::get_normalized_abspath(); $site_url = trailingslashit( is_multisite() ? network_site_url() : site_url() ); $url = str_replace( array( $site_dir, WP_PLUGIN_DIR ), array( $site_url, WP_PLUGIN_URL ), $dir ); return set_url_scheme( $url ); } /** * Get the normalized absolute path defined by WordPress. * * @since 2.2.6 * * @return string Normalized absolute path. */ protected static function get_normalized_abspath() { return self::normalize_path( self::$ABSPATH ); } /** * `wp_normalize_path` wrapper for back-compat. Normalize a filesystem path. * * On windows systems, replaces backslashes with forward slashes * and forces upper-case drive letters. * Allows for two leading slashes for Windows network shares, but * ensures that all other duplicate slashes are reduced to a single. * * @since 2.2.0 * * @param string $path Path to normalize. * @return string Normalized path. */ protected static function normalize_path( $path ) { if ( function_exists( 'wp_normalize_path' ) ) { return wp_normalize_path( $path ); } // Replace newer WP's version of wp_normalize_path. $path = str_replace( '\\', '/', $path ); $path = preg_replace( '|(?<=.)/+|', '/', $path ); if ( ':' === substr( $path, 1, 1 ) ) { $path = ucfirst( $path ); } return $path; } /** * Get timestamp from text date * * @since 2.2.0 * @param string $value Date value. * @param string $date_format Expected date format. * @return mixed Unix timestamp representing the date. */ public static function get_timestamp_from_value( $value, $date_format ) { $date_object = date_create_from_format( $date_format, $value ); return $date_object ? $date_object->setTime( 0, 0, 0 )->getTimeStamp() : strtotime( $value ); } /** * Takes a php date() format string and returns a string formatted to suit for the date/time pickers * It will work only with the following subset of date() options: * * Formats: d, l, j, z, m, F, n, y, and Y. * * A slight effort is made to deal with escaped characters. * * Other options are ignored, because they would either bring compatibility problems between PHP and JS, or * bring even more translation troubles. * * @since 2.2.0 * @param string $format PHP date format. * @return string reformatted string */ public static function php_to_js_dateformat( $format ) { // order is relevant here, since the replacement will be done sequentially. $supported_options = array( 'd' => 'dd', // Day, leading 0. 'j' => 'd', // Day, no 0. 'z' => 'o', // Day of the year, no leading zeroes. // 'D' => 'D', // Day name short, not sure how it'll work with translations. 'l ' => 'DD ', // Day name full, idem before. 'l, ' => 'DD, ', // Day name full, idem before. 'm' => 'mm', // Month of the year, leading 0. 'n' => 'm', // Month of the year, no leading 0. // 'M' => 'M', // Month, Short name. 'F ' => 'MM ', // Month, full name. 'F, ' => 'MM, ', // Month, full name. 'y' => 'y', // Year, two digit. 'Y' => 'yy', // Year, full. 'H' => 'HH', // Hour with leading 0 (24 hour). 'G' => 'H', // Hour with no leading 0 (24 hour). 'h' => 'hh', // Hour with leading 0 (12 hour). 'g' => 'h', // Hour with no leading 0 (12 hour). 'i' => 'mm', // Minute with leading 0. 's' => 'ss', // Second with leading 0. 'a' => 'tt', // am/pm. 'A' => 'TT', // AM/PM. ); foreach ( $supported_options as $php => $js ) { // replaces every instance of a supported option, but skips escaped characters. $format = preg_replace( "~(?<!\\\\)$php~", $js, $format ); } $supported_options = array( 'l' => 'DD', // Day name full, idem before. 'F' => 'MM', // Month, full name. ); if ( isset( $supported_options[ $format ] ) ) { $format = $supported_options[ $format ]; } $format = preg_replace_callback( '~(?:\\\.)+~', array( __CLASS__, 'wrap_escaped_chars' ), $format ); return $format; } /** * Get a DateTime object from a value. * * @since 2.11.0 * * @param string $value The value to convert to a DateTime object. * * @return DateTime|null */ public static function get_datetime_from_value( $value ) { return is_serialized( $value ) // Ok, we need to unserialize the value // -- allows back-compat for older field values with serialized DateTime objects. ? self::unserialize_datetime( $value ) // Handle new json formatted values. : self::json_to_datetime( $value ); } /** * Unserialize a datetime value string. * * This is a back-compat method for older field values with serialized DateTime objects. * * @since 2.11.0 * * @param string $date_value The serialized datetime value. * * @return DateTime|null */ public static function unserialize_datetime( $date_value ) { $datetime = @unserialize( trim( $date_value ), array( 'allowed_classes' => array( 'DateTime' ) ) ); return $datetime && $datetime instanceof DateTime ? $datetime : null; } /** * Convert a json datetime value string to a DateTime object. * * @since 2.11.0 * * @param string $json_string The json value string. * * @return DateTime|null */ public static function json_to_datetime( $json_string ) { if ( ! is_string( $json_string ) ) { return null; } $json = json_decode( $json_string ); // Check if json decode was successful if ( json_last_error() !== JSON_ERROR_NONE ) { return null; } // If so, convert to DateTime object. return self::unserialize_datetime( str_replace( 'stdClass', 'DateTime', serialize( $json ) ) ); } /** * Helper function for CMB_Utils::php_to_js_dateformat(). * * @since 2.2.0 * @param string $value Value to wrap/escape. * @return string Modified value */ public static function wrap_escaped_chars( $value ) { return ''' . str_replace( '\\', '', $value[0] ) . '''; } /** * Send to debug.log if WP_DEBUG is defined and true * * @since 2.2.0 * * @param string $function Function name. * @param int $line Line number. * @param mixed $msg Message to output. * @param mixed $debug Variable to print_r. */ public static function log_if_debug( $function, $line, $msg, $debug = null ) { if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) { error_log( "In $function, $line:" . print_r( $msg, true ) . ( $debug ? print_r( $debug, true ) : '' ) ); } } /** * Determine a file's extension * * @since 1.0.0 * @param string $file File url. * @return string|false File extension or false */ public static function get_file_ext( $file ) { $parsed = parse_url( $file, PHP_URL_PATH ); return $parsed ? strtolower( pathinfo( $parsed, PATHINFO_EXTENSION ) ) : false; } /** * Get the file name from a url * * @since 2.0.0 * @param string $value File url or path. * @return string File name */ public static function get_file_name_from_path( $value ) { $parts = explode( '/', $value ); return is_array( $parts ) ? end( $parts ) : $value; } /** * Check if WP version is at least $version. * * @since 2.2.2 * @param string $version WP version string to compare. * @return bool Result of comparison check. */ public static function wp_at_least( $version ) { return version_compare( get_bloginfo( 'version' ), $version, '>=' ); } /** * Combines attributes into a string for a form element. * * @since 1.1.0 * @param array $attrs Attributes to concatenate. * @param array $attr_exclude Attributes that should NOT be concatenated. * @return string String of attributes for form element. */ public static function concat_attrs( $attrs, $attr_exclude = array() ) { $attr_exclude[] = 'rendered'; $attr_exclude[] = 'js_dependencies'; $attributes = ''; foreach ( $attrs as $attr => $val ) { $excluded = in_array( $attr, (array) $attr_exclude, true ); $empty = false === $val && 'value' !== $attr; if ( ! $excluded && ! $empty ) { $val = is_array( $val ) ? implode( ',', $val ) : $val; // if data attribute, use single quote wraps, else double. $quotes = self::is_data_attribute( $attr ) ? "'" : '"'; $attributes .= sprintf( ' %1$s=%3$s%2$s%3$s', $attr, $val, $quotes ); } } return $attributes; } /** * Check if given attribute is a data attribute. * * @since 2.2.5 * * @param string $att HTML attribute. * @return boolean */ public static function is_data_attribute( $att ) { return 0 === stripos( $att, 'data-' ); } /** * Ensures value is an array. * * @since 2.2.3 * * @param mixed $value Value to ensure is array. * @param array $default Default array. Defaults to empty array. * * @return array The array. */ public static function ensure_array( $value, $default = array() ) { if ( empty( $value ) ) { return $default; } if ( is_array( $value ) || is_object( $value ) ) { return (array) $value; } // Not sure anything would be non-scalar that is not an array or object? if ( ! is_scalar( $value ) ) { return $default; } return (array) $value; } /** * If number is numeric, normalize it with floatval or intval, depending on if decimal is found. * * @since 2.2.6 * * @param mixed $value Value to normalize (if numeric). * @return mixed Possibly normalized value. */ public static function normalize_if_numeric( $value ) { if ( is_numeric( $value ) ) { $value = false !== strpos( $value, '.' ) ? floatval( $value ) : intval( $value ); } return $value; } /** * Generates a 12 character unique hash from a string. * * @since 2.4.0 * * @param string $string String to create a hash from. * * @return string */ public static function generate_hash( $string ) { return substr( base_convert( md5( $string ), 16, 32 ), 0, 12 ); } }