silverstripe-framework/filesystem/Filesystem.php

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<?php
class Filesystem extends Object {
public static $file_create_mask = 02775;
public static $folder_create_mask = 02775;
/**
* Create a folder, recursively
*/
static function makeFolder($folder) {
if(!file_exists($base = dirname($folder))) self::makeFolder($base);
if(!file_exists($folder)) mkdir($folder, Filesystem::$folder_create_mask);
}
/**
* Remove a directory and all subdirectories and files
*/
static function removeFolder( $folder ) {
// remove a file encountered by a recursive call.
if( !is_dir( $folder ) || is_link($folder) )
unlink( $folder );
else {
$dir = opendir( $folder );
while( $file = readdir( $dir ) )
if( !preg_match( '/\.{1,2}$/', $file ) )
self::removeFolder( $folder.'/'.$file );
closedir($dir);
rmdir($folder);
}
}
/*
* Return the most recent modification time of anything in the folder.
* @param $folder The folder, relative to the site root
* @param $extensionList An option array of file extensions to limit the search to
*/
protected static $cache_folderModTime;
static function folderModTime($folder, $extensionList = null, $recursiveCall = false) {
//$cacheID = $folder . ',' . implode(',', $extensionList);
//if(!$recursiveCall && self::$cache_folderModTime[$cacheID]) return self::$cache_folderModTime[$cacheID];
$modTime = 0;
if(!Filesystem::isAbsolute($folder)) $folder = Director::baseFolder() . '/' . $folder;
$items = scandir($folder);
foreach($items as $item) {
if($item[0] != '.') {
// Recurse into folders
if(is_dir("$folder/$item")) {
$modTime = max($modTime, self::folderModTime("$folder/$item", $extensionList, true));
// Check files
} else {
if($extensionList) $extension = strtolower(substr($item,strrpos($item,'.')+1));
if(!$extensionList || in_array($extension, $extensionList)) {
$modTime = max($modTime, filemtime("$folder/$item"));
}
}
}
}
//if(!$recursiveCall) self::$cache_folderModTime[$cacheID] = $modTime;
return $modTime;
}
/**
* Returns true if the given filename is an absolute file reference.
* Works on Linux and Windows
*/
static function isAbsolute($filename) {
if($_ENV['OS'] == "Windows_NT" || $_SERVER['WINDIR']) return $filename[1] == ':' && $filename[2] == '/';
else return $filename[0] == '/';
}
}
?>