#18883478 Optimizer 개선

git-svn-id: http://xe-core.googlecode.com/svn/sandbox@7434 201d5d3c-b55e-5fd7-737f-ddc643e51545
This commit is contained in:
ngleader 2010-05-11 09:03:13 +00:00
parent 76c69c6405
commit bac20a9a40
2 changed files with 206 additions and 200 deletions

View file

@ -9,6 +9,7 @@
class Optimizer {
var $cache_path = "./files/cache/optimized/";
var $script_file = "./common/script.php?l=%s&t=%s";
/**
* @brief Constructor which check if a directory, 'optimized' exists in designated path. If not create a new one
@ -37,38 +38,37 @@
function getOptimizedFiles($source_files, $type = "js") {
if(!is_array($source_files) || !count($source_files)) return;
// $source_files의 역슬래쉬 경로를 슬래쉬로 변경 (윈도우즈 대비)
foreach($source_files as $key => $file){
$source_files[$key]['file'] = str_replace("\\","/",$file['file']);
}
// 관리자 설정시 설정이 되어 있지 않으면 패스
$db_info = Context::getDBInfo();
if($db_info->use_optimizer == 'N') return $this->_getOptimizedRemoved($source_files);
// 캐시 디렉토리가 없으면 실행하지 않음
if(!is_dir($this->cache_path)) return $this->_getOptimizedRemoved($source_files);
$files = array();
$db_info = Context::getDBInfo();
if($db_info->use_optimizer == 'N' || !is_dir($this->cache_path)) return $this->_getOptimizedRemoved($source_files);
if(!count($source_files)) return;
foreach($source_files as $file) {
if(!$file || !$file['file']) continue;
$files = array();
foreach($source_files as $key => $file) {
if(!$file || !$file['file'] || !file_exists($file['file'])) continue;
$file['file'] = $source_files[$key]['file'] = str_replace("\\","/",$file['file']);
if(empty($file['optimized']) || preg_match('/^https?:\/\//i', $file['file']) ) $files[] = $file;
else $targets[] = $file;
else{
$targets[] = $file;
}
}
if(!count($targets)) return $this->_getOptimizedRemoved($files);
$optimized_info = $this->getOptimizedInfo($targets);
$path = sprintf("%s%s", $this->cache_path, $optimized_info[0]);
$filename = sprintf("%s.%s.%s.php", $optimized_info[0], $optimized_info[1], $type);
$this->doOptimizedFile($path, $filename, $targets, $type);
array_unshift($files, array('file' => $path.'/'.$filename, 'media' => 'all'));
$list_file_hash = md5(join(' ', $targets));
$list_file = FileHandler::getRealPath($this->cache_path . $list_file_hash);
if(!file_exists($list_file)){
$str = '<?php $f=array();';
foreach($targets as $file) $str .= '$f[]="'. $file['file'] . '";';
$str .= ' return $f; ?>';
FileHandler::writeFile($list_file, $str);
}
array_unshift($files, array('file' => sprintf($this->script_file, $list_file_hash, $type) , 'media' => 'all'));
$files = $this->_getOptimizedRemoved($files);
if(!count($files)) return $files;
@ -78,7 +78,7 @@
foreach($files as $key => $val) {
$file = $val['file'];
if(substr($file,0,1)=='/' || strpos($file,'://')!==false) continue;
if($file{0} == '/' || strpos($file,'://')!==false) continue;
if(substr($file,0,2)=='./') $file = substr($file,2);
$file = $abpath.$file;
while(strpos($file,'/../')!==false) {
@ -86,184 +86,8 @@
}
$files[$key]['file'] = $file;
}
return $files;
}
/**
* @brief retrive a list of files from a given parameter
* @param[in] files a list containing files
**/
function _getOnlyFileList($files) {
foreach($files as $key => $val) $files[$key] = $val['file'];
return $files;
}
/**
* @brief method to generate a unique key from list of files along with a last modified date
* @param[in] files an array containing file names
**/
function getOptimizedInfo($files) {
// 개별 요소 파일이 갱신되었으면 새로 옵티마이징
$count = count($files);
$last_modified = 0;
for($i=0;$i<$count;$i++) {
$mtime = filemtime($files[$i]['file']);
if($last_modified < $mtime) $last_modified = $mtime;
}
$buff = implode("\n", $this->_getOnlyFileList($files));
return array(md5($buff), $last_modified);
}
/**
* @brief method that check if a valid cache file exits for a given filename. If not create new one.
* @param[in] path directory path of the cache files
* @param[in] filename a filename for cache files
* @param[in] targets
* @param[in] type a type of cache file
**/
function doOptimizedFile($path, $filename, $targets, $type) {
// 대상 파일이 있으면 그냥 패스~
if(file_exists($path.'/'.$filename)) return;
// 대상 파일이 없으면 hashed_filename으로 생성된 파일들을 모두 삭제
FileHandler::removeFilesInDir($path);
// 새로 캐시 파일을 생성
$this->makeOptimizedFile($path, $filename, $targets, $type);
}
/**
* @brief method produce a php code to merge css/js files, compress the resultant files and modified the HTML header accordingly.
* @param[in] path
* @param[in] filename a name of a resultant file
* @param[in] targets list of files to be used for the operation
* @param[in] type a type of file such as css or js
* @return NONE
**/
function makeOptimizedFile($path, $filename, $targets, $type) {
/**
* 실제 css나 js의 내용을 합친 것을 구함
**/
// 대상 파일의 내용을 구해오고 css 파일일 경우 url()내의 경로를 변경
$content_filename = substr($filename, 0, -4);
$file_object = FileHandler::openFile($path."/".$content_filename, "w");
if($type == 'css') $file_object->write('@charset "UTF-8";'."\n");
foreach($targets as $file) {
$str = FileHandler::readFile($file['file']);
$str = trim(Context::convertEncodingStr($str));
// css 일경우 background:url() 변경 / media 적용
if($type == 'css') {
$str = $this->replaceCssPath($file['file'], $str);
if($file['media'] != 'all') $str = '@media '.$file['media'].' {'."\n".$str."\n".'}';
}
$file_object->write($str);
$file_object->write("\n");
unset($str);
}
$file_object->close();
/**
* 캐시 타임을 제대로 이용하기 위한 헤더 파일 구함
**/
// 확장자별 content-type 체크
if($type == 'css') $content_type = 'text/css';
elseif($type == 'js') $content_type = 'text/javascript';
// 캐시를 위한 처리
$unique = crc32($content_filename);
$size = filesize($path.'/'.$content_file);
$mtime = filemtime($path.'/'.$content_file);
// js, css 파일을 php를 통해서 출력하고 이 출력시에 헤더값을 조작하여 캐싱과 압축전송이 되도록 함 (IE6는 CSS파일일 경우 gzip압축하지 않음)
$header_buff = '<?php
$content_filename = "'.$content_filename.'";
$mtime = '.$mtime.';
$cached = false;
$type = "'.$type.'";
if(isset($_SERVER["HTTP_IF_MODIFIED_SINCE"])) {
$time = strtotime(preg_replace("/;.*$/", "", $_SERVER["HTTP_IF_MODIFIED_SINCE"]));
if($mtime == $time) {
header("HTTP/1.1 304");
$cached = true;
}
}
if( preg_match("/MSIE 6.0/i",$_SERVER["HTTP_USER_AGENT"]) || strpos($_SERVER["HTTP_ACCEPT_ENCODING"], "gzip")===false || !function_exists("ob_gzhandler") ) {
$size = filesize($content_filename);
} else {
$f = fopen($content_filename,"r");
$buff = fread($f, filesize($content_filename));
fclose($f);
$buff = ob_gzhandler($buff, 5);
$size = strlen($buff);
header("Content-Encoding: gzip");
}
header("Content-Type: '.$content_type.'; charset=UTF-8");
header("Date: '.substr(gmdate('r'), 0, -5).'GMT");
header("Expires: '.substr(gmdate('r', strtotime('+1 MONTH')), 0, -5).'GMT");
header("Cache-Control: private, max-age=2592000");
header("Pragma: cache");
header("Last-Modified: '.substr(gmdate('r', $mtime), 0, -5).'GMT");
header("ETag: \"'.dechex($unique).'-".dechex($size)."-'.dechex($mtime).'\"");
if(!$cached) {
if(empty($buff)) {
$f = fopen($content_filename,"r");
fpassthru($f);
} else print $buff;
}
?>';
FileHandler::writeFile($path.'/'.$filename, $header_buff);
}
/**
* @brief method that modify a path for import or background element in a given css file
* @param[in] file a file to be modified
* @param[in] str a buffer to store resultant content
* @return Returns resultant content
**/
function replaceCssPath($file, $str) {
// css 파일의 위치를 구함
$this->tmp_css_path = preg_replace("/^\.\//is","",dirname($file))."/";
// url() 로 되어 있는 css 파일의 경로를 변경
$str = preg_replace_callback('/url\(([^\)]*)\)/is', array($this, '_replaceCssPath'), $str);
// charset 지정 문구를 제거
$str = preg_replace('!@charset([^;]*?);!is','',$str);
return $str;
}
/**
* @brief callback method that is responsible for replacing strings in css file with predefined ones.
* @param[in] matches a list of strings to be examined and modified if necessary
* @return Returns resultant content
**/
function _replaceCssPath($matches) {
static $abpath = null;
if(is_null($abpath)) {
$url_info = parse_url(Context::getRequestUri());
$abpath = $url_info['path'];
}
$path = str_replace(array('"',"'"),'',$matches[1]);
if(substr($path,0,1)=='/' || strpos($path,'://')!==false || strpos($path,'.htc')!==false) return 'url("'.$path.'")';
if(substr($path,0,2)=='./') $path = substr($path,2);
$target = $abpath.$this->tmp_css_path.$path;
while(strpos($target,'/../')!==false) {
$target = preg_replace('/\/([^\/]+)\/\.\.\//','/',$target);
}
return 'url("'.$target.'")';
}
}
?>