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<?php
if ( ! defined( 'ABSPATH' ) ) {
die( '-1' );
}
/**
* Class VcShortcodeAutoloader
*/
class VcShortcodeAutoloader {
private static $instance = null;
private static $config = null;
private static $cached = null;
/**
* @param bool $load_config
* @return \VcShortcodeAutoloader|null
*/
public static function getInstance( $load_config = true ) {
if ( null === self::$instance ) {
self::$instance = new VcShortcodeAutoloader( $load_config );
}
return self::$instance;
}
/**
* VcShortcodeAutoloader constructor.
* @param bool $load_config
*/
private function __construct( $load_config = true ) {
if ( ! $load_config ) {
return;
}
$this->loadConfig();
}
/**
* Include class dependencies
*
* @param string $class Class name
*
* @return string[] Included (if any) files
*/
public static function includeClass( $class ) {
// call the constructor (php 7.4 compat)
self::getInstance();
if ( ! is_array( self::$config ) ) {
self::loadConfig();
}
$class = strtolower( $class );
$files = array();
if ( self::$config['classmap'] ) {
$files = isset( self::$config['classmap'][ $class ] ) ? self::$config['classmap'][ $class ] : array();
}
if ( $files ) {
foreach ( $files as $k => $file ) {
if ( self::$cached ) {
$files[ $k ] = $file = self::$config['root_dir'] . DIRECTORY_SEPARATOR . $file;
}
if ( is_file( $file ) ) {
require_once $file;
}
}
}
return $files;
}
/**
* Find all classes defined in file
*
* @param string $file Full path to file
*
* @return string[]
*/
public static function extractClassNames( $file ) {
$classes = array();
// @codingStandardsIgnoreLine
$contents = file_get_contents( $file );
if ( ! $contents ) {
return $classes;
}
$tokens = token_get_all( $contents );
$class_token = false;
foreach ( $tokens as $token ) {
if ( is_array( $token ) ) {
if ( T_CLASS === $token[0] ) {
$class_token = true;
} elseif ( $class_token && T_STRING === $token[0] ) {
$classes[] = $token[1];
$class_token = false;
}
}
}
return $classes;
}
/**
* Extract all classes from file with their extends
*
* @param $file
*
* @return array Associative array where key is class name and value is parent class name (if any))
*/
public static function extractClassesAndExtends( $file ) {
$classes = array();
// @codingStandardsIgnoreLine
$contents = file_get_contents( $file );
if ( ! $contents ) {
return $classes;
}
// class Foo extends Bar {
preg_match_all( '/class\s+(\w+)\s+extends\s(\w+)\s+\{/i', $contents, $matches, PREG_SET_ORDER );
foreach ( $matches as $v ) {
$classes[ $v[1] ] = $v[2];
}
// class Foo {
preg_match_all( '/class\s+(\w+)\s+\{/i', $contents, $matches, PREG_SET_ORDER );
foreach ( $matches as $v ) {
$classes[ $v[1] ] = null;
}
return $classes;
}
/**
* Find file by class name
*
* Search is case-insensitive
*
* @param string $class
* @param string[]|string $dirs One or more directories where to look (recursive)
*
* @return string|false Full path to class file
*/
public static function findClassFile( $class, $dirs ) {
foreach ( (array) $dirs as $dir ) {
$Directory = new RecursiveDirectoryIterator( $dir );
$Iterator = new RecursiveIteratorIterator( $Directory );
$Regex = new RegexIterator( $Iterator, '/^.+\.php$/i', RecursiveRegexIterator::GET_MATCH );
$class = strtolower( $class );
foreach ( $Regex as $file => $object ) {
$classes = self::extractClassNames( $file );
if ( $classes && in_array( $class, array_map( 'strtolower', $classes ), true ) ) {
return $file;
}
}
}
return false;
}
/**
* Construct full dependency list of classes for each class in right order (including class itself)
*
* @param string[]|string $dirs Directories where to look (recursive)
*
* @return array Associative array where key is lowercase class name and value is array of files to include for
* that class to work
*/
public static function generateClassMap( $dirs ) {
$flat_map = array();
foreach ( (array) $dirs as $dir ) {
$Directory = new RecursiveDirectoryIterator( $dir );
$Iterator = new RecursiveIteratorIterator( $Directory );
$Regex = new RegexIterator( $Iterator, '/^.+\.php$/i', RecursiveRegexIterator::GET_MATCH );
foreach ( $Regex as $file => $object ) {
$classes = self::extractClassesAndExtends( $file );
foreach ( $classes as $class => $extends ) {
$class = strtolower( $class );
$extends = strtolower( $extends );
if ( in_array( $extends, array(
'wpbakeryshortcodescontainer',
'wpbakeryvisualcomposer',
'wpbakeryshortcode',
'wpbmap',
), true ) ) {
$extends = null;
}
$flat_map[ $class ] = array(
'class' => $class,
'file' => $file,
'extends' => $extends,
);
}
}
}
$map = array();
foreach ( $flat_map as $params ) {
$dependencies = array(
array(
'class' => $params['class'],
'file' => $params['file'],
),
);
if ( $params['extends'] ) {
$queue = array( $params['extends'] );
while ( $queue ) {
$current_class = array_pop( $queue );
$current_class = $flat_map[ $current_class ];
$dependencies[] = array(
'class' => $current_class['class'],
'file' => $current_class['file'],
);
if ( ! empty( $current_class['extends'] ) ) {
$queue[] = $current_class['extends'];
}
}
$map[ $params['class'] ] = array_reverse( $dependencies );
} else {
$map[ $params['class'] ] = $dependencies;
}
}
// simplify array
$classmap = array();
foreach ( $map as $class => $dependencies ) {
$classmap[ $class ] = array();
foreach ( $dependencies as $v ) {
$classmap[ $class ][] = str_replace( '\\', '/', $v['file'] );
}
}
return $classmap;
}
/**
* Regenerate and save class map file
*
* @param string[]|string $dirs Directories where to look (recursive)
* @param string $target Output file
*
* @return bool
*/
public static function saveClassMap( $dirs, $target ) {
if ( ! $target ) {
return false;
}
$classmap = self::generateClassMap( $dirs );
// @codingStandardsIgnoreLine
$code = '<?php return (array) json_decode(\'' . json_encode( $classmap ) . '\') ?>';
// @codingStandardsIgnoreLine
return (bool) file_put_contents( $target, $code );
}
protected static function loadConfig() {
$config = array(
'classmap_file' => vc_path_dir( 'APP_ROOT', 'vc_classmap.json.php' ),
'shortcodes_dir' => vc_path_dir( 'SHORTCODES_DIR' ),
'root_dir' => vc_path_dir( 'APP_ROOT' ),
);
if ( is_file( $config['classmap_file'] ) ) {
$config['classmap'] = require $config['classmap_file'];
self::$cached = true;
} else {
$config['classmap'] = self::generateClassMap( $config['shortcodes_dir'] );
self::$cached = false;
}
self::$config = $config;
}
}