public function combineFiles($buffer, $filetype)
{
require_once CST_DIR . 'lib/Cst.php';
$core = new Cst();
$stylesheetCombined = '';
$stylesheets = array();
$exclude = get_option('cst-' . $filetype . '-exclude');
if ($filetype == 'css') {
// Find all stylesheet links
preg_match_all('$<link.*rel=[\'"]stylesheet[\'"].*?>$', $buffer, $stylesheets);
} else {
preg_match_all('$<script.*((text/javascript|src=[\'"].*[\'"]).*){2}$', $buffer, $stylesheets);
}
foreach ($stylesheets[0] as $stylesheet) {
// Exclude external files
if (!preg_match('$' . site_url() . '$', $stylesheet)) {
if (get_option('cst-' . $filetype . '-exclude-external') == 'yes') {
$external = false;
continue;
} else {
$external = true;
}
}
// Get the filepath
$regex = '$';
if ($filetype == 'css') {
$regex .= 'href';
} else {
$regex .= 'src';
}
if ($external == false) {
$regex .= '=[\'"]' . get_bloginfo('wpurl') . '(.*?)\\??[\'"]$';
preg_match($regex, $stylesheet, $href);
$path = $href[1];
$path = preg_replace('$\\.' . $filetype . '(\\?.*)$', '.' . $filetype, $path);
$path = ltrim($path, '/');
} else {
$regex .= '=[\'"](.*)?[\'"]$';
preg_match($regex, $stylesheet, $href);
$path = $href[1];
}
// Check if exclude
if (strpos($exclude, $path) !== false) {
// File is excluded so skip
continue;
}
// Remove the link from $buffer
$buffer = str_replace($stylesheet, '', $buffer);
if ($external == false) {
$file = file_get_contents(ABSPATH . $path);
} else {
$file = file_get_contents($path);
}
if ($filetype == 'css') {
// Replace relative urls with absolute urls to cdn
$directory = str_replace(ABSPATH, '', dirname($path));
$urls = array();
preg_match_all('$url\\((.*?)\\)$', $file, $urls);
$i = 0;
foreach ($urls[1] as $url) {
if (preg_match('$https?://|data:$', $url)) {
continue;
}
$newurl = get_option('ossdl_off_cdn_url') . '/' . $directory . '/' . $url;
$file = str_replace($urls[0][$i], 'url(' . $newurl . ')', $file);
$i++;
}
}
$stylesheetCombined .= PHP_EOL . $file;
}
// Create unique filename based on the md5 of the content
$hash = md5($stylesheetCombined);
$combinedFilename = ABSPATH . get_option('cst-' . $filetype . '-savepath') . '/' . $hash . '.' . $filetype;
if (!is_readable($combinedFilename)) {
if ($filetype == 'js' && get_option('cst-js-minify') == 'yes') {
// Do minification
switch (get_option('cst-js-optlevel')) {
case 'simple':
$complevel = 'SIMPLE_OPTIMIZATIONS';
case 'advanced':
$complevel = 'ADVANCED_OPTIMIZATIONS';
default:
$complevel = 'WHITESPACE_ONLY';
}
$ch = curl_init('http://closure-compiler.appspot.com/compile');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, 'output_info=compiled_code&output_format=text&compilation_level=' . $complevel . '&js_code=' . urlencode($stylesheetCombined));
$output = curl_exec($ch);
$stylesheetCombined = $output;
}
// File needs saving and syncing
file_put_contents($combinedFilename, $stylesheetCombined);
$core->createConnection();
$core->pushFile($combinedFilename, get_option('cst-' . $filetype . '-savepath') . '/' . $hash . '.' . $filetype);
}
// File can be loaded
$fileUrl = get_option('ossdl_off_cdn_url') . '/' . get_option('cst-' . $filetype . '-savepath') . '/' . $hash . '.' . $filetype;
if ($filetype == 'css') {
$linkTag = '<link rel="stylesheet" type="text/css" href="' . $fileUrl . '" />';
$buffer = preg_replace('$<head[^er]*>$', '<head>' . $linkTag, $buffer);
} else {
$linkTag = '<script type="text/javascript" src="' . $fileUrl . '"></script>';
if (get_option('cst-js-placement') == 'body') {
if (preg_match('$</body*>$', $buffer)) {
$buffer = preg_replace('$</body*>$', $linkTag . '</body>', $buffer);
} else {
$buffer .= $linkTag;
}
} else {
$buffer = preg_replace('$<head[^er]*>$', '<head>' . $linkTag, $buffer);
}
}
return $buffer;
}
/**
* Function to be run once the form is submitted
*
* @param $form whether it is the main/js/css form
*/
function formSubmitted($form)
{
if (wp_verify_nonce($GLOBALS['nonce'], 'cst-nonce')) {
if ($form == 'main') {
foreach ($_POST['options'] as $key => $value) {
update_option($key, $value);
}
require_once CST_DIR . 'lib/Cst.php';
$obj = new Cst();
$obj->testConnection();
} else {
if ($form == 'js') {
foreach ($_POST['options'] as $key => $value) {
if ($key == 'cst-js-exclude' && !empty($value)) {
// Change new lines to csv list
$value = explode("\n", $value);
$fileslist = '';
foreach ($value as $file) {
$filename = trim($file);
if (!empty($filename)) {
$fileslist .= $filename . ',';
}
}
$value = rtrim($fileslist, ',');
// Drop last comma
}
update_option($key, $value);
}
} else {
if ($form == 'css') {
foreach ($_POST['options'] as $key => $value) {
if ($key == 'cst-css-exclude' && !empty($value)) {
// Change new lines to csv list
$value = explode("\n", $value);
$fileslist = '';
foreach ($value as $file) {
$filename = trim($file);
if (!empty($filename)) {
$fileslist .= $filename . ',';
}
}
$value = rtrim($fileslist, ',');
// Drop last comma
}
update_option($key, $value);
}
}
}
}
} else {
_e('Security error');
die;
}
}
function hourlySync()
{
require_once CST_DIR . 'lib/Cst.php';
$core = new Cst();
$core->syncFiles();
}