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<?php
namespace Timber;
class URLHelper {
/**
*
*
* @return string
*/
public static function get_current_url() {
$pageURL = self::get_scheme()."://";
if ( isset($_SERVER["SERVER_PORT"]) && $_SERVER["SERVER_PORT"] && $_SERVER["SERVER_PORT"] != "80" && $_SERVER["SERVER_PORT"] != "443") {
$pageURL .= self::get_host().":".$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];
} else {
$pageURL .= self::get_host().$_SERVER["REQUEST_URI"];
}
return $pageURL;
}
/**
*
* Get url scheme
* @return string
*/
public static function get_scheme() {
return isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? 'https' : 'http';
}
/**
*
* Check to see if the URL begins with the string in question
* Because it's a URL we don't care about protocol (HTTP vs HTTPS)
* Or case (so it's cAsE iNsEnSeTiVe)
* @return boolean
*/
public static function starts_with( $haystack, $starts_with ) {
$haystack = str_replace('https', 'http', strtolower($haystack));
$starts_with = str_replace('https', 'http', strtolower($starts_with));
if ( 0 === strpos($haystack, $starts_with) ) {
return true;
}
return false;
}
/**
*
*
* @param string $url
* @return bool
*/
public static function is_url( $url ) {
if ( !is_string($url) ) {
return false;
}
$url = strtolower($url);
if ( strstr($url, '://') ) {
return true;
}
return false;
}
/**
*
*
* @return string
*/
public static function get_path_base() {
$struc = get_option('permalink_structure');
$struc = explode('/', $struc);
$p = '/';
foreach ( $struc as $s ) {
if ( !strstr($s, '%') && strlen($s) ) {
$p .= $s.'/';
}
}
return $p;
}
/**
*
*
* @param string $url
* @param bool $force
* @return string
*/
public static function get_rel_url( $url, $force = false ) {
$url_info = parse_url($url);
if ( isset($url_info['host']) && $url_info['host'] != self::get_host() && !$force ) {
return $url;
}
$link = '';
if ( isset($url_info['path']) ) {
$link = $url_info['path'];
}
if ( isset($url_info['query']) && strlen($url_info['query']) ) {
$link .= '?'.$url_info['query'];
}
if ( isset($url_info['fragment']) && strlen($url_info['fragment']) ) {
$link .= '#'.$url_info['fragment'];
}
$link = self::remove_double_slashes($link);
return $link;
}
/**
* Some setups like HTTP_HOST, some like SERVER_NAME, it's complicated
* @link http://stackoverflow.com/questions/2297403/http-host-vs-server-name
* @return string the HTTP_HOST or SERVER_NAME
*/
public static function get_host() {
if ( isset($_SERVER['HTTP_HOST']) && $_SERVER['HTTP_HOST'] ) {
return $_SERVER['HTTP_HOST'];
}
if ( isset($_SERVER['SERVER_NAME']) && $_SERVER['SERVER_NAME'] ) {
return $_SERVER['SERVER_NAME'];
}
return '';
}
/**
*
*
* @param string $url
* @return bool
*/
public static function is_local( $url ) {
$host = self::get_host();
if ( !empty($host) && strstr($url, $host) ) {
return true;
}
return false;
}
/**
*
*
* @param string $src
* @return string
*/
public static function get_full_path( $src ) {
$root = ABSPATH;
$old_root_path = $root.$src;
$old_root_path = str_replace('//', '/', $old_root_path);
return $old_root_path;
}
/**
* Takes a url and figures out its place based in the file system based on path
* NOTE: Not fool-proof, makes a lot of assumptions about the file path
* matching the URL path
*
* @param string $url
* @return string
*/
public static function url_to_file_system( $url ) {
$url_parts = parse_url($url);
$url_parts['path'] = apply_filters('timber/URLHelper/url_to_file_system/path', $url_parts['path']);
$path = ABSPATH.$url_parts['path'];
$path = str_replace('//', '/', $path);
return $path;
}
/**
* @param string $fs
*/
public static function file_system_to_url( $fs ) {
$relative_path = self::get_rel_path($fs);
$home = home_url('/'.$relative_path);
$home = apply_filters('timber/URLHelper/file_system_to_url', $home);
return $home;
}
/**
* Get the path to the content directory relative to the site.
* This replaces the WP_CONTENT_SUBDIR constant
* @return string (ex: /wp-content or /content)
*/
public static function get_content_subdir() {
$home_url = get_home_url();
$home_url = apply_filters('timber/URLHelper/get_content_subdir/home_url', $home_url);
return str_replace($home_url, '', WP_CONTENT_URL);
}
/**
*
*
* @param string $src
* @return string
*/
public static function get_rel_path( $src ) {
if ( strstr($src, ABSPATH) ) {
return str_replace(ABSPATH, '', $src);
}
//its outside the wordpress directory, alternate setups:
$src = str_replace(WP_CONTENT_DIR, '', $src);
return self::get_content_subdir().$src;
}
/**
*
*
* @param string $url
* @return string
*/
public static function remove_double_slashes( $url ) {
$url = str_replace('//', '/', $url);
$schemes_whitelist = apply_filters( 'timber/url/schemes-whitelist', array( 'http', 'https', 's3', 'gs' ) );
foreach ( $schemes_whitelist as $scheme ) {
if ( strstr($url, $scheme . ':') && !strstr($url, $scheme . '://') ) {
$url = str_replace( $scheme . ':/', $scheme . '://', $url );
}
}
return $url;
}
/**
*
*
* @param string $url
* @param string $path
* @return string
*/
public static function prepend_to_url( $url, $path ) {
if ( strstr(strtolower($url), 'http') ) {
$url_parts = parse_url($url);
$url = $url_parts['scheme'].'://'.$url_parts['host'];
if ( isset($url_parts['port']) ) {
$url .= ':'.$url_parts['port'];
}
$url .= $path;
if ( isset($url_parts['path']) ) {
$url .= $url_parts['path'];
}
if ( isset($url_parts['query']) ) {
$url .= '?'.$url_parts['query'];
}
if ( isset($url_parts['fragment']) ) {
$url .= '#'.$url_parts['fragment'];
}
} else {
$url = $url.$path;
}
return self::remove_double_slashes($url);
}
/**
*
*
* @param string $path
* @return string
*/
public static function preslashit( $path ) {
if ( strpos($path, '/') != 0 ) {
$path = '/'.$path;
}
return $path;
}
/**
*
*
* @param string $path
* @return string
*/
public static function unpreslashit( $path ) {
return ltrim($path, '/');
}
/**
* This will evaluate wheter a URL is at an aboslute location (like http://example.org/whatever)
*
* @param string $path
* @return boolean true if $path is an absolute url, false if relative.
*/
public static function is_absolute( $path ) {
return (boolean) (strstr($path, 'http'));
}
/**
* This function is slightly different from the one below in the case of:
* an image hosted on the same domain BUT on a different site than the
* Wordpress install will be reported as external content.
*
* @param string $url a URL to evaluate against
* @return boolean if $url points to an external location returns true
*/
public static function is_external_content( $url ) {
$is_external = self::is_absolute($url) && !self::is_internal_content($url);
return $is_external;
}
/**
* @param string $url
*/
private static function is_internal_content( $url ) {
// using content_url() instead of site_url or home_url is IMPORTANT
// otherwise you run into errors with sites that:
// 1. use WPML plugin
// 2. or redefine content directory
$is_content_url = strstr($url, content_url());
// this case covers when the upload directory has been redefined
$upload_dir = wp_upload_dir();
$is_upload_url = strstr($url, $upload_dir['baseurl']);
return $is_content_url || $is_upload_url;
}
/**
* Checks if URL is external or internal.
* Works with domains, subdomains and protocol relative domains.
*
* @param string $url Url.
* @return bool true if $path is an external url, false if relative or local.
* true if it's a subdomain (http://cdn.example.org = true)
*/
public static function is_external( $url ) {
$has_http = strstr(strtolower($url), 'http') || strstr(strtolower($url), '//');
$on_domain = strstr($url, self::get_host());
if ( $has_http && ! $on_domain ) {
return true;
}
return false;
}
/**
* Pass links through untrailingslashit unless they are a single /
*
* @param string $link
* @return string
*/
public static function remove_trailing_slash( $link ) {
if ( $link != "/" ) {
$link = untrailingslashit($link);
}
return $link;
}
/**
* Removes the subcomponent of a URL regardless of protocol
* @since 1.3.3
* @author jarednova
* @param string $haystack ex: http://example.org/wp-content/uploads/dog.jpg
* @param string $needle ex: http://example.org/wp-content
* @return string
*/
public static function remove_url_component( $haystack, $needle ) {
$haystack = str_replace($needle, '', $haystack);
$needle = self::swap_protocol($needle);
return str_replace($needle, '', $haystack);
}
/**
* Swaps whatever protocol of a URL is sent. http becomes https and vice versa
* @since 1.3.3
* @author jarednova
* @param string $url ex: http://example.org/wp-content/uploads/dog.jpg
* @return string ex: https://example.org/wp-content/uploads/dog.jpg
*/
public static function swap_protocol( $url ) {
if ( stristr($url, 'http:') ) {
return str_replace('http:', 'https:', $url);
}
if ( stristr($url, 'https:') ) {
return str_replace('https:', 'http:', $url);
}
return $url;
}
/**
* Pass links through user_trailingslashit handling query strings properly
*
* @param string $link
* @return string
* */
public static function user_trailingslashit( $link ) {
$link_parts = parse_url($link);
if ( !$link_parts ) {
return $link;
}
if ( isset($link_parts['path']) && $link_parts['path'] != '/' ) {
$new_path = user_trailingslashit($link_parts['path']);
if ( $new_path != $link_parts['path'] ) {
$link = str_replace($link_parts['path'], $new_path, $link);
}
}
return $link;
}
/**
* Returns the url parameters, for example for url http://example.org/blog/post/news/2014/whatever
* this will return array('blog', 'post', 'news', '2014', 'whatever');
* OR if sent an integer like: TimberUrlHelper::get_params(2); this will return 'news';
*
* @param int $i the position of the parameter to grab.
* @return array|string
*/
public static function get_params( $i = false ) {
$args = explode('/', trim(strtolower($_SERVER['REQUEST_URI'])));
$newargs = array();
foreach ( $args as $arg ) {
if ( strlen($arg) ) {
$newargs[] = $arg;
}
}
if ( $i === false ) {
return $newargs;
}
if ( $i < 0 ) {
//count from end
$i = count($newargs) + $i;
}
if ( isset($newargs[$i]) ) {
return $newargs[$i];
}
}
}