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<?php |
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/** |
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* UpStream Autoloader. |
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* |
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* @package Upstream |
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*/ |
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|
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// Exit if accessed directly. |
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if ( ! defined( 'ABSPATH' ) ) { |
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exit; |
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} |
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|
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/** |
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* UpStream Autoloader. |
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* |
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* @class UpStream_Autoloader |
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* @version 0.0.1 |
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* @package UpStream/Classes |
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* @category Class |
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* @author UpStream |
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*/ |
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class UpStream_Autoloader { |
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/** |
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* Path to the includes directory. |
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* |
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* @var string |
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*/ |
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private $include_path = ''; |
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|
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/** |
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* The Constructor. |
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*/ |
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public function __construct() { |
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if ( function_exists( '__autoload' ) ) { |
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spl_autoload_register( '__autoload' ); |
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} |
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|
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spl_autoload_register( array( $this, 'autoload' ) ); |
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|
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$this->include_path = untrailingslashit( plugin_dir_path( UPSTREAM_PLUGIN_FILE ) ) . '/includes/'; |
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} |
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|
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/** |
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* Auto-load classes on demand to reduce memory consumption. |
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* |
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* @param string $class Class name. |
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*/ |
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public function autoload( $class ) { |
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$orig_class = $class; |
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$class = strtolower( $class ); |
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$file = $this->get_file_name_from_class( $class ); |
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$path = ''; |
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|
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if ( strpos( $class, 'upstream_options' ) === 0 ) { |
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$path = $this->include_path . 'admin/options/'; |
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} elseif ( strpos( $class, 'upstream_metaboxes' ) === 0 ) { |
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$path = $this->include_path . 'admin/metaboxes/'; |
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} elseif ( strpos( $class, 'upstream_model' ) === 0 ) { |
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$path = $this->include_path . 'model/'; |
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} |
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|
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// WCS class file name conversion. |
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if ( strpos( $class, 'upstream_' ) === 0 ) { |
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$file = str_replace( 'class-up-', 'class-upstream-', $file ); |
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} |
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|
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if ( empty( $path ) || ( ! $this->load_file( $path . $file ) && strpos( $class, 'upstream_' ) === 0 ) ) { |
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$this->load_file( $this->include_path . $file ); |
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} |
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} |
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|
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/** |
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* Take a class name and turn it into a file name. |
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* |
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* @param string $class Class name. |
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* |
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* @return string |
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*/ |
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private function get_file_name_from_class( $class ) { |
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$updated_classes = array( |
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'upstream_cache', |
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'upstream_client', |
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'upstream_import', |
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'upstream_project', |
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); |
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|
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if ( ! in_array( $class, $updated_classes, true ) ) { |
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$class = str_replace( 'upstream', 'up', $class ); |
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} |
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|
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return 'class-' . str_replace( '_', '-', $class ) . '.php'; |
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} |
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|
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/** |
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* Include a class file. |
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* |
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* @param string $path Class file path. |
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* |
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* @return bool successful or not |
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*/ |
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private function load_file( $path ) { |
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if ( $path && is_readable( $path ) ) { |
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include_once $path; |
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return true; |
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} |
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|
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return false; |
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} |
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} |
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|
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new UpStream_Autoloader(); |
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|
