Your IP : 216.73.216.95
<?php
require_once DIR_SYSTEM . 'journal2/lib/Minify/CSS/Compressor.php';
require_once DIR_SYSTEM . 'journal2/lib/Minify/CommentPreserver.php';
require_once DIR_SYSTEM . 'journal2/lib/Minify/CSS/UriRewriter.php';
require_once DIR_SYSTEM . 'journal2/lib/Minify/CSS.php';
require_once DIR_SYSTEM . 'journal2/lib/Minify/JSMin.php';
require_once DIR_SYSTEM . 'journal2/lib/Minify/HTML.php';
function j2_js_minify ($js) {
return JSMin::minify($js);
}
class Journal2Minifier {
/** @var Journal2Cache */
private $cache;
private $minify_css = false;
private $minify_js = false;
private $salt = null;
private $path = null;
private $dir = null;
private $styles = array();
private $scripts = array(
'header' => array(),
'footer' => array()
);
public function __construct($cache) {
$this->cache = $cache;
$this->path = Journal2Cache::getCachePath();
$this->dir = Journal2Cache::getCacheDir();
}
public function getSalt() {
if ($this->salt !== null) {
return $this->salt;
}
if (!$this->cache->canCache() || $this->cache->getDeveloperMode()) {
return null;
}
$file = $this->path . 'salt';
if (!file_exists($file)) {
$this->salt = md5(mt_rand());
file_put_contents($file, $this->salt);
} else {
$this->salt = file_get_contents($file);
}
return $this->salt;
}
public function getMinifyCss() {
return $this->minify_css;
}
public function setMinifyCss($value) {
$this->minify_css = $value;
}
public function getMinifyJs() {
return $this->minify_js;
}
public function setMinifyJs($value) {
$this->minify_js = $value;
}
public function addStyle($href) {
$this->styles[md5($href)] = $href;
}
public function addScript($src, $position = 'header') {
$this->scripts[$position][md5($src)] = $src;
}
public function css() {
if ($this->cache->canCache() && !$this->cache->getDeveloperMode() && $this->minify_css) {
/* generate file if not exits */
$combined_css_file = '_' . $this->getSalt() . '_' . $this->getHash($this->styles, 'css');
if (!file_exists($this->path . $combined_css_file)) {
/* parse all styles, generate corresponding minified css file */
foreach ($this->styles as $style) {
$file = $this->path . $this->getHash($style, 'css');
if (!file_exists($file)) {
$css_file = realpath(DIR_SYSTEM . '../' . $this->removeQueryString($style));
if (!file_exists($css_file)) {
trigger_error("{$style} css file not found!");
continue;
}
$content = file_get_contents($css_file);
$content_min = Minify_CSS::minify($content, array(
'preserveComments' => false,
'currentDir' => dirname($css_file)
));
file_put_contents($file, $content_min, LOCK_EX);
}
}
/* combine all styles into one file */
$fh = @fopen($this->path . $combined_css_file, 'w');
flock($fh, LOCK_EX);
foreach ($this->styles as $style) {
$file = $this->path . $this->getHash($style, 'css');
if (!file_exists($file)) {
continue;
}
$content = file_get_contents($file);
fwrite($fh, $content);
}
/* append journal.css at the end */
$content_min = Minify_CSS::minify(file_get_contents($this->path . $this->cache->getJournalAssetsFileName('css')), array(
'preserveComments' => false,
'currentDir' => realpath($this->path . '../')
));
fwrite($fh, $content_min);
flock($fh, LOCK_UN);
fclose($fh);
}
/* return link tag */
return $this->printStyle($this->dir . $combined_css_file);
}
$assets = '';
foreach ($this->styles as $style) {
$assets .= $this->printStyle($style);
}
return $assets;
}
public function js($position = 'header') {
if ($this->cache->canCache() && !$this->cache->getDeveloperMode() && $this->minify_js) {
/* generate file if not exits */
$combined_js_file = '_' . $this->getSalt() . '_' . $this->getHash($this->scripts[$position], 'js');
if (!file_exists($this->path . $combined_js_file)) {
/* parse all scripts, generate corresponding minified js file */
foreach ($this->scripts[$position] as $script) {
$file = $this->path . $this->getHash($script, 'js');
if (!file_exists($file)) {
$js_file = realpath(DIR_SYSTEM . '../' . $this->removeQueryString($script));
if (!file_exists($js_file)) {
trigger_error("{$script} js file not found!");
continue;
}
$content = file_get_contents($js_file);
$content_min = JSMin::minify($content);
file_put_contents($file, $content_min, LOCK_EX);
}
}
/* combine all scripts into one file */
$fh = @fopen($this->path . $combined_js_file, 'w');
flock($fh, LOCK_EX);
foreach ($this->scripts[$position] as $script) {
$file = $this->path . $this->getHash($script, 'js');
if (!file_exists($file)) {
continue;
}
$content = file_get_contents($file);
fwrite($fh, ';' . $content);
}
/* append journal.js at the end */
if ($position === 'footer') {
fwrite($fh, file_get_contents($this->path . $this->cache->getJournalAssetsFileName('js')));
}
flock($fh, LOCK_UN);
fclose($fh);
}
/* return link tag */
if ($position === 'footer') {
return $this->printScript($this->dir . $combined_js_file, ' defer');
}
return $this->printScript($this->dir . $combined_js_file);
}
$assets = '';
foreach ($this->scripts[$position] as $script) {
$assets .= $this->printScript($script);
}
return $assets;
}
private function getHash($files, $ext) {
$hash = '';
if (is_array($files)) {
foreach ($files as $file) {
$hash .= $file;
}
} else {
$hash = $files;
}
$hash .= JOURNAL_VERSION;
$hash .= Journal2Utils::getHostName();
return md5($hash) . '.' . $ext;
}
private function printStyle($href) {
return '<link rel="stylesheet" href="' . $this->addJournalVersion($href, $this->minify_css) . '"/>' . PHP_EOL;
}
private function printScript($src, $def = '') {
$def = rtrim($def) . ' ';
return '<script type="text/javascript"' . $def . 'src="' . $this->addJournalVersion($src, $this->minify_css) . '"></script>' . PHP_EOL;
}
private function removeQueryString($file) {
$file = explode('?', $file);
return $file[0];
}
private function addJournalVersion($url, $is_minified) {
if (!$this->cache->getDeveloperMode() && $is_minified) {
return $url;
}
if (strpos($url, '?') === false) {
return $url . '?j2v=' . JOURNAL_VERSION;
}
return $url . '&j2v=' . JOURNAL_VERSION;
}
}