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<?php

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global $WPSC_HTTP_HOST, $cache_enabled, $cache_path, $blogcacheid, $blog_cache_dir;

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// we need to backup HTTP_HOST early in the PHP process, and if running in command line set it to something useful.

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if ( ! empty( $_SERVER['HTTP_HOST'] ) ) {

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$WPSC_HTTP_HOST = function_exists( 'mb_strtolower' ) ? mb_strtolower( $_SERVER['HTTP_HOST'] ) : strtolower( $_SERVER['HTTP_HOST'] );

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// phpcs:ignore WordPress.NamingConventions.ValidVariableName.VariableNotSnakeCase

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$WPSC_HTTP_HOST = htmlentities( $WPSC_HTTP_HOST, ENT_COMPAT );

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} elseif ( PHP_SAPI === 'cli' && function_exists( 'get_option' ) ) {

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$WPSC_HTTP_HOST = (string) parse_url( get_option( 'home' ), PHP_URL_HOST );

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} else {

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$cache_enabled = false;

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$WPSC_HTTP_HOST = '';

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}

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// We want to be able to identify each blog in a WordPress MU install

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$blogcacheid = '';

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$blog_cache_dir = $cache_path;

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// we might be able to simplify this. I run a multisite and the blogs directory isn't used any more.

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// $blogcacheid is set to the domain or prefix path of your site, and all files are put in $cache_path/supercache/$blogcacheid/[REQUEST_URI path]/

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if ( is_multisite() ) {

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global $current_blog;

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if ( is_object( $current_blog ) && function_exists( 'is_subdomain_install' ) ) {

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$blogcacheid = is_subdomain_install() ? $current_blog->domain : trim( $current_blog->path, '/' );

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} elseif ( ( defined( 'SUBDOMAIN_INSTALL' ) && SUBDOMAIN_INSTALL ) || ( defined( 'VHOST' ) && VHOST === 'yes' ) ) {

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$blogcacheid = $WPSC_HTTP_HOST;

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} else {

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$request_uri = str_replace( '..', '', preg_replace( '/[ <>\'\"\r\n\t]/', '', $_SERVER['REQUEST_URI'] ) );

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$request_uri = str_replace( '//', '/', $request_uri );

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$wpsc_path_segs = array_filter( explode( '/', trim( $request_uri, '/' ) ) );

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$wpsc_base_count = defined( 'PATH_CURRENT_SITE' ) ? count( array_filter( explode( '/', trim( PATH_CURRENT_SITE, '/' ) ) ) ) : 0;

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if ( ! str_ends_with( $request_uri, '/' ) ) {

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$wpsc_path_segs = array_slice( $wpsc_path_segs, 0, -1 );

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}

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if ( count( $wpsc_path_segs ) > $wpsc_base_count &&

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( ! defined( 'PATH_CURRENT_SITE' ) || str_starts_with( $request_uri, PATH_CURRENT_SITE ) )

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) {

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$blogcacheid = $wpsc_path_segs[ $wpsc_base_count ];

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}

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}

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// If blogcacheid is empty then set it to main blog.

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if ( empty( $blogcacheid ) ) {

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$blogcacheid = 'blog';

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}

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$blog_cache_dir = str_replace( '//', '/', $cache_path . 'blogs/' . $blogcacheid . '/' );

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}

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