118 lines
2.5 KiB
PHP
118 lines
2.5 KiB
PHP
|
<?php
|
||
|
|
namespace W3TC;
|
||
|
|
|
||
|
|
class Util_Mime {
|
||
|
|
/**
|
||
|
|
* Returns file mime type
|
||
|
|
*
|
||
|
|
* @param string $file
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
static public function get_mime_type( $file ) {
|
||
|
|
static $cache = array();
|
||
|
|
|
||
|
|
if ( !isset( $cache[$file] ) ) {
|
||
|
|
$mime_type = false;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Try to detect by extension (fast)
|
||
|
|
*/
|
||
|
|
$mime_types = include W3TC_INC_DIR . '/mime/all.php';
|
||
|
|
|
||
|
|
foreach ( $mime_types as $extension => $type ) {
|
||
|
|
if ( preg_match( '~\.(' . $extension . ')$~i', $file ) ) {
|
||
|
|
if ( is_array( $type ) )
|
||
|
|
$mime_type = array_pop( $type );
|
||
|
|
else
|
||
|
|
$mime_type = $type;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Try to detect using file info function
|
||
|
|
*/
|
||
|
|
if ( !$mime_type && function_exists( 'finfo_open' ) ) {
|
||
|
|
$finfo = @finfo_open( FILEINFO_MIME );
|
||
|
|
|
||
|
|
if ( !$finfo ) {
|
||
|
|
$finfo = @finfo_open( FILEINFO_MIME );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( $finfo ) {
|
||
|
|
$mime_type = @finfo_file( $finfo, $file );
|
||
|
|
|
||
|
|
if ( $mime_type ) {
|
||
|
|
$extra_mime_type_info = strpos( $mime_type, "; " );
|
||
|
|
|
||
|
|
if ( $extra_mime_type_info ) {
|
||
|
|
$mime_type = substr( $mime_type, 0, $extra_mime_type_info );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( $mime_type == 'application/octet-stream' ) {
|
||
|
|
$mime_type = false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
@finfo_close( $finfo );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Try to detect using mime type function
|
||
|
|
*/
|
||
|
|
if ( !$mime_type && function_exists( 'mime_content_type' ) ) {
|
||
|
|
$mime_type = @mime_content_type( $file );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* If detection failed use default mime type
|
||
|
|
*/
|
||
|
|
if ( !$mime_type ) {
|
||
|
|
$mime_type = 'application/octet-stream';
|
||
|
|
}
|
||
|
|
|
||
|
|
$cache[$file] = $mime_type;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $cache[$file];
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
static public function sections_to_mime_types_map() {
|
||
|
|
static $sections_to_mime_types_array = null;
|
||
|
|
|
||
|
|
if ( is_null( $sections_to_mime_types_array ) ) {
|
||
|
|
$sections_to_mime_types_array = array(
|
||
|
|
'cssjs' => include W3TC_INC_DIR . '/mime/cssjs.php',
|
||
|
|
'html' => include W3TC_INC_DIR . '/mime/html.php',
|
||
|
|
'other' => include W3TC_INC_DIR . '/mime/other.php'
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
return $sections_to_mime_types_array;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
static public function mime_type_to_section( $mime_type ) {
|
||
|
|
static $mime_type_to_section_array = null;
|
||
|
|
|
||
|
|
if ( is_null( $mime_type_to_section_array ) ) {
|
||
|
|
$sections = self::sections_to_mime_types_map();
|
||
|
|
|
||
|
|
$mime_type_to_section_array = array();
|
||
|
|
|
||
|
|
foreach ( $sections as $section => $mime_types ) {
|
||
|
|
foreach ( $mime_types as $mime_type ) {
|
||
|
|
$mime_type_to_section_array[$mime_type] = $section;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return isset( $mime_type_to_section_array[$mime_type] ) ?
|
||
|
|
$mime_type_to_section_array[$mime_type] : null;
|
||
|
|
}
|
||
|
|
}
|