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<?php
/**
* Class FileReflection.
*
* @package AmpProject\AmpWP
*/
namespace AmpProject\AmpWP\DevTools;
use AmpProject\AmpWP\Infrastructure\Registerable;
use AmpProject\AmpWP\Infrastructure\Service;
use AmpProject\AmpWP\PluginRegistry;
/**
* Reflect on a file to deduce its type of source (plugin, theme, core).
*
* @package AmpProject\AmpWP
* @since 2.0.2
* @internal
*/
final class FileReflection implements Service, Registerable {
// Fields to include in the source array.
const SOURCE_FILE = 'file';
const SOURCE_NAME = 'name';
const SOURCE_TYPE = 'type';
// Source types.
const TYPE_CORE = 'core';
const TYPE_MU_PLUGIN = 'mu-plugin';
const TYPE_THEME = 'theme';
const TYPE_PLUGIN = 'plugin';
// Regular expression patterns to use.
const SLUG_PATTERN = '(?<slug>[^/]+)';
const FILE_PATTERN = '(?<file>.*$)';
const SLASHED_FILE_PATTERN = '(/(?<file>.*$))?';
const CORE_FILE_PATTERN = '(?<slug>wp-admin|wp-includes)/(?<file>.*$)';
/**
* Plugin registry instance to use.
*
* @var PluginRegistry
*/
private $plugin_registry;
/**
* Plugin file pattern to use.
*
* Used as cache to not recreate the pattern with each file lookup.
*
* @var string
*/
private $plugin_file_pattern;
/**
* Parent theme pattern to use.
*
* Used as cache to not recreate the pattern with each file lookup.
*
* @var string|null
*/
private $parent_theme_pattern;
/**
* Child theme pattern to use.
*
* Used as cache to not recreate the pattern with each file lookup.
*
* @var string|null
*/
private $child_theme_pattern;
/**
* Must-use plugin file pattern to use.
*
* Used as cache to not recreate the pattern with each file lookup.
*
* @var string
*/
private $mu_plugin_file_pattern;
/**
* WordPress Core file pattern to use.
*
* Used as cache to not recreate the pattern with each file lookup.
*
* @var string
*/
private $core_file_pattern;
/**
* Template directory.
*
* Used as cache to avoid running a filtered getter with each file lookup.
*
* @var string|null
*/
private $template_directory;
/**
* Template slug.
*
* Used as cache to avoid running a filtered getter with each file lookup.
*
* @var string|null
*/
private $template_slug;
/**
* Stylesheet directory.
*
* Used as cache to avoid running a filtered getter with each file lookup.
*
* @var string|null
*/
private $stylesheet_directory;
/**
* Stylesheet slug.
*
* Used as cache to avoid running a filtered getter with each file lookup.
*
* @var string|null
*/
private $stylesheet_slug;
/**
* FileReflection constructor.
*
* @param PluginRegistry $plugin_registry Plugin registry to use.
*/
public function __construct( PluginRegistry $plugin_registry ) {
$this->plugin_registry = $plugin_registry;
}
/**
* Register the service.
*
* @return void
*/
public function register() {
add_action( 'setup_theme', [ $this, 'reset_theme_variables' ], ~PHP_INT_MAX );
}
/**
* Reset the cached theme variables.
*
* This is needed in case a plugin has dynamically changed the theme.
*/
public function reset_theme_variables() {
$this->template_directory = null;
$this->template_slug = null;
$this->parent_theme_pattern = null;
$this->stylesheet_directory = null;
$this->stylesheet_slug = null;
$this->child_theme_pattern = null;
}
/**
* Identify the type, name, and relative path for a file.
*
* @param string $file File.
* @return array {
* @type string $type Source type (core, plugin, mu-plugin, or theme). Not set if no match.
* @type string $name Source name. Not set if no match.
* @type string $file Relative file path based on the type. Not set if no match.
* }
*/
public function get_file_source( $file ) {
static $recursion_protection = false;
if ( $recursion_protection ) {
return [];
}
$recursion_protection = true;
$matches = [];
if ( $this->is_parent_theme_file( $file, $matches ) ) {
$recursion_protection = false;
return $this->get_file_source_array(
self::TYPE_THEME,
$this->get_template_slug(),
$matches['file']
);
}
if ( $this->is_child_theme_file( $file, $matches ) ) {
$recursion_protection = false;
return $this->get_file_source_array(
self::TYPE_THEME,
$this->get_stylesheet_slug(),
$matches['file']
);
}
if ( $this->is_plugin_file( $file, $matches ) ) {
$recursion_protection = false;
return $this->get_file_source_array(
self::TYPE_PLUGIN,
$matches['slug'],
isset( $matches['file'] ) ? $matches['file'] : $matches['slug']
);
}
if ( $this->is_mu_plugin_file( $file, $matches ) ) {
$recursion_protection = false;
return $this->get_file_source_array(
self::TYPE_MU_PLUGIN,
$matches['slug'],
isset( $matches['file'] ) ? $matches['file'] : $matches['slug']
);
}
if ( $this->is_core_file( $file, $matches ) ) {
$recursion_protection = false;
return $this->get_file_source_array(
self::TYPE_CORE,
$matches['slug'],
$matches['file']
);
}
$recursion_protection = false;
return [];
}
/**
* Get the template directory.
*
* @return string Template directory.
*/
private function get_template_directory() {
if ( null === $this->template_directory ) {
$this->template_directory = wp_normalize_path(
get_template_directory()
);
}
return $this->template_directory;
}
/**
* Get the template slug.
*
* @return string Template slug.
*/
private function get_template_slug() {
if ( null === $this->template_slug ) {
$this->template_slug = get_template();
}
return $this->template_slug;
}
/**
* Get the stylesheet directory.
*
* @return string Stylesheet directory.
*/
private function get_stylesheet_directory() {
if ( null === $this->stylesheet_directory ) {
$this->stylesheet_directory = wp_normalize_path(
get_stylesheet_directory()
);
}
return $this->stylesheet_directory;
}
/**
* Get the stylesheet slug.
*
* @return string Stylesheet slug.
*/
private function get_stylesheet_slug() {
if ( null === $this->stylesheet_slug ) {
$this->stylesheet_slug = get_stylesheet();
}
return $this->stylesheet_slug;
}
/**
* Check whether the given file belongs to a plugin.
*
* @param string $file File to check.
* @param array $matches Associative array of matches, passed by reference.
* @return false|int Number of found matches, or false if an error occurred.
*/
private function is_plugin_file( $file, &$matches ) {
if ( null === $this->plugin_file_pattern ) {
$this->plugin_file_pattern = sprintf(
':%s%s%s:s',
preg_quote(
trailingslashit(
wp_normalize_path(
$this->plugin_registry->get_plugin_dir()
)
),
':'
),
self::SLUG_PATTERN,
self::SLASHED_FILE_PATTERN
);
}
return preg_match( $this->plugin_file_pattern, $file, $matches );
}
/**
* Check whether the given file belongs to a parent theme.
*
* @param string $file File to check.
* @param array $matches Associative array of matches, passed by reference.
* @return false|int Number of found matches, or false if an error occurred.
*/
private function is_parent_theme_file( $file, &$matches ) {
$template_directory = $this->get_template_directory();
if ( empty( $template_directory ) ) {
return false;
}
if ( null === $this->parent_theme_pattern ) {
$this->parent_theme_pattern = sprintf(
':%s%s:s',
preg_quote( trailingslashit( $template_directory ), ':' ),
self::FILE_PATTERN
);
}
return preg_match( $this->parent_theme_pattern, $file, $matches );
}
/**
* Check whether the given file belongs to a child theme.
*
* @param string $file File to check.
* @param array $matches Associative array of matches, passed by reference.
* @return false|int Number of found matches, or false if an error occurred.
*/
private function is_child_theme_file( $file, &$matches ) {
$stylesheet_directory = $this->get_stylesheet_directory();
if ( empty( $stylesheet_directory ) ) {
return false;
}
if ( null === $this->child_theme_pattern ) {
$this->child_theme_pattern = sprintf(
':%s%s:s',
preg_quote( trailingslashit( $stylesheet_directory ), ':' ),
self::FILE_PATTERN
);
}
return preg_match( $this->child_theme_pattern, $file, $matches );
}
/**
* Check whether the given file belongs to a must-use plugin.
*
* @param string $file File to check.
* @param array $matches Associative array of matches, passed by reference.
* @return false|int Number of found matches, or false if an error occurred.
*/
private function is_mu_plugin_file( $file, &$matches ) {
if ( null === $this->mu_plugin_file_pattern ) {
$this->mu_plugin_file_pattern = sprintf(
':%s%s%s:s',
preg_quote(
trailingslashit(
wp_normalize_path( WPMU_PLUGIN_DIR )
),
':'
),
self::SLUG_PATTERN,
self::SLASHED_FILE_PATTERN
);
}
return preg_match( $this->mu_plugin_file_pattern, $file, $matches );
}
/**
* Check whether the given file belongs to WordPress Core.
*
* @param string $file File to check.
* @param array $matches Associative array of matches, passed by reference.
* @return false|int Number of found matches, or false if an error occurred.
*/
private function is_core_file( $file, &$matches ) {
if ( null === $this->core_file_pattern ) {
$this->core_file_pattern = sprintf(
':%s%s:s',
preg_quote(
trailingslashit(
wp_normalize_path( ABSPATH )
),
':'
),
self::CORE_FILE_PATTERN
);
}
return preg_match( $this->core_file_pattern, $file, $matches );
}
/**
* Get a new file source array.
*
* @param string $type Type of the file source.
* @param string $name Name of the file source.
* @param string $file File reference for the file source.
*
* @return string[] File source array.
*/
private function get_file_source_array( $type, $name, $file ) {
return [
self::SOURCE_TYPE => $type,
self::SOURCE_NAME => $name,
self::SOURCE_FILE => $file,
];
}
}
