Created
January 13, 2018 02:34
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Autoloading for both WordPress classes and PSR2 files in a /vendor directory.
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| <?php | |
| /** | |
| * PSR4 autoloader using spl_autoload_register | |
| * @package HN_Reactive | |
| * @author Thomas J Belknap <tbelknap@holisticnetworking.net> | |
| */ | |
| namespace HN_Reactive; | |
| spl_autoload_register( function ( $class ) { | |
| $wordpress = wordpress_include( $class ); | |
| $psr2 = composer_include( $class ); | |
| if ( file_exists( plugin_dir_path( __FILE__ ) . $wordpress . '.php' ) ) : | |
| require_once( plugin_dir_path( __FILE__ ) . $wordpress . '.php' ); | |
| else : | |
| require_once( plugin_dir_path( __FILE__ ) . '/vendor/autoload.php' ); | |
| endif; | |
| } ); | |
| /** | |
| * Format the incoming class name to the WordPress file naming standard. | |
| * @param $class | |
| * @return string | |
| */ | |
| function wordpress_include( $class ) { | |
| $parts = explode( '\\', $class ); | |
| // Remove HN_Reactive index: | |
| unset( $parts[0] ); | |
| if ( ! empty( $parts ) ) : | |
| $parts[ count( $parts ) ] = 'class-' . wp_class_to_file( $parts[ count( $parts ) ] ); | |
| $class_path = implode( '/', $parts ); | |
| return $class_path; | |
| else : | |
| return false; | |
| endif; | |
| } | |
| /** | |
| * Format the incoming class name to the PSR2 file name standard. | |
| * @param $class | |
| * @return mixed | |
| */ | |
| function composer_include( $class ) { | |
| $class_path = preg_replace( '/\\\\/', '/', $class ); | |
| return $class_path; | |
| } | |
| /** | |
| * Translates a WordPress-valid class name to a WordPress-valid file name (e.g. Class_Name - class-name) | |
| * @param string $str String in camel case format | |
| * @return string $str Translated into dashed format | |
| */ | |
| function wp_class_to_file( $str ) { | |
| return implode( | |
| '-', | |
| explode( | |
| '_', | |
| preg_replace_callback( | |
| '/[A-Z]*?/', | |
| function( $matches ) { | |
| return strtolower( $matches[0] ); | |
| }, | |
| $str | |
| ) | |
| ) | |
| ); | |
| } |
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