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<?php
/**
* @package SjTools
* @version $Id$
* @license http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL
* @copyright (c) 2009-2012 YouTech Company. All Rights Reserved.
* @author YouTech Company http://www.smartaddons.com
*
*/
defined('_JEXEC') or die;
abstract class SjTools {
/**
* SjTools_Image class instance
* Use for image processing.
* @var object
*/
private static $image = null;
/**
* Current module
* @var object
*/
private static $module = null;
private static $listmodule = null;
/**
* Set current module to work with
* @param object $module
*/
public static function setModule($module=null){
if (!isset(self::$listmodule)){
self::$listmodule = array();
}
array_push(self::$listmodule, $module->module);
self::$module = $module;
}
public static function listModules(){
self::dump(self::$listmodule, 'List Modules:<br>');
}
/**
* Return current module
* @return $module
*/
public static function getModule(){
if ( self::$module === null ){
$module = new stdClass();
$module->module = 'imagecache';
self::$module = $module;
}
return self::$module;
}
/**
* Get SjTools_Image object and set source image before.
* @param string $image_file
*/
public static function getImage($image_file){
return self::_getImage()->reset()->load($image_file);
}
/**
* Resize an image to $width x $height.
* @param string $image - Is real path or url of image file.
* @param int $width
* @param int $height
* @param array $config
* @return image url from image cache.
*/
public static function resize($image, $width, $height=null, $config=array()){
// Compliance with old version call.
if (is_array($width)){
$config = $width;
$width = isset($config['output_width']) ? $config['output_width'] : null;
$height = isset($config['output_height']) ? $config['output_height'] : null;
$config['function'] = in_array($config['function'], array('none', 'center', 'fill', 'fit', 'stretch'))
? 'resize_' . $config['function']
: $config['function'];
}
if (!is_string($image)){
return false;
} else if (isset($config['function']) && $config['function']=='resize_none'){
if (!self::isUrl($image)){
$image = JURI::base(true) . '/' . str_replace('\\', '/', $image);
}
return $image;
} else if (self::isUrl($image)){
$get_url_cache = self::getRemoteFile($image);
if (is_array($get_url_cache)){
$image = array_pop($get_url_cache);
} else {
return $image;
}
}
self::_getImage()->applyConfig($config);
self::_getImage()->load($image)->resize($width, $height);
$abs_image_path = (string)self::_getImage()->save();
$searchs = array(DS);
$replaces = array('/');
if (JPATH_SITE!='/' && JURI::base(true)!=''){
array_unshift($searchs, JPATH_SITE);
array_unshift($replaces, JURI::base(true));
return str_replace($searchs, $replaces, $abs_image_path);
} else {
return JURI::root() . '/' . str_replace($searchs, $replaces, $abs_image_path);
}
}
/**
* Cache folder for current module
*
*/
public static function getModuleCache(){
$cache = JPATH_CACHE . DS . self::getModule()->module;
if(!file_exists($cache)){
@mkdir($cache, 0755, true);
}
return $cache;
}
/**
* Include javascript files
* @param string $filename
*/
public static function script($filename){
$js_files = self::_getRelativePaths($filename, true, 'js');
//self::dump($js_files);
$document = &JFactory::getDocument();
foreach ($js_files as $include) {
$document->addScript($include);
}
}
/**
* Include stylesheet files
* @param string $filename
* @param string $type
* @param string $media
* @param Array $attribs
*/
public static function stylesheet($filename, $type = 'text/css', $media = null, $attribs = array()){
$css_files = self::_getRelativePaths($filename, true, 'css');
//self::dump($css_files);
$document = &JFactory::getDocument();
foreach ($css_files as $include) {
$document->addStylesheet($include, $type, $media, $attribs);
}
}
/**
* @deprecated
* Find layout files.
* @param string $layout_name
*/
public static function layout($layout_name=null){
return array(
JModuleHelper::getLayoutPath(self::$module->module, $layout_name)
);
}
private static function _getRelativePaths($filename, $detect_browser=true, $folder){
if (self::isUrl($filename)){
$includes = array($filename);
} else {
if ($detect_browser){
$navigator = JBrowser::getInstance();
$browser = $navigator->getBrowser();
$major = $navigator->getMajor();
$minor = $navigator->getMinor();
$ext = JFile::getExt($filename);
$strip = JFile::stripExt($filename);
// Try to include files named filename.ext, filename_browser.ext, filename_browser_major.ext, filename_browser_major_minor.ext
// where major and minor are the browser version names
$potential = array($filename, $strip.'_'.$browser.'.'.$ext, $strip.'_'.$browser.'_'.$major.'.'.$ext, $strip.'_'.$browser.'_'.$major.'_'.$minor.'.'.$ext);
} else {
$potential = array($filename);
}
$app = JFactory::getApplication();
$template = $app->getTemplate();
// Prepare array of files
$includes = array();
if ($folder==='tmpl'){
$includes_PATH = array(
'templates' . DS . $template . DS . 'html' . DS . self::getModule()->module . DS,
'modules' . DS . self::getModule()->module . DS . $folder . DS
);
} else {
$includes_PATH = array(
'templates' . DS . $template . DS . 'html' . DS . self::getModule()->module . DS . 'assets' . DS . $folder . DS,
'templates' . DS . $template . DS . 'html' . DS . self::getModule()->module . DS . 'assets' . DS,
'templates' . DS . $template . DS . 'html' . DS . self::getModule()->module . DS . $folder . DS,
'templates' . DS . $template . DS . 'html' . DS . self::getModule()->module . DS,
'modules' . DS . self::getModule()->module . DS . 'assets' . DS . $folder . DS,
'modules' . DS . self::getModule()->module . DS . 'assets' . DS,
'modules' . DS . self::getModule()->module . DS . $folder . DS,
'modules' . DS . self::getModule()->module . DS
);
}
foreach ($potential as $file){
foreach ($includes_PATH as $path){
//echo "<br>Check File: " . $path . $file;
if (file_exists($path . $file)){
$file_url = str_replace(DS, '/', $path . $file);
array_push($includes, $file_url);
break;
}
}
}
}
return $includes;
}
/**
* Human readable date format
* @param int $timestamp
* @param int $granularity
* @param string $format
*/
public static function timeAgo($timestamp, $granularity=2, $format='Y-m-d H:i:s'){
$difference = time() - $timestamp;
if($difference < 0){
return '0 seconds ago';
} elseif ($difference < 864000){
$periods = array('week' => 604800,'day' => 86400,'hr' => 3600,'min' => 60,'sec' => 1);
$output = '';
foreach($periods as $key => $value){
if($difference >= $value){
$time = round($difference / $value);
$difference %= $value;
$output .= ($output ? ' ' : '').$time.' ';
$output .= (($time > 1 && $key == 'day') ? $key.'s' : $key);
$granularity--;
}
if($granularity == 0) break;
}
return ($output ? $output : '0 seconds').' ago';
}
return date($format, $timestamp);
}
/**
* Validate an url
* @param string $url
*/
public static function isUrl($url){
if(preg_match('/^(https?)\:\/\/[a-z0-9+\$_-]+(\.[a-z0-9+\$_-]+)*/', $url)){
return true;
}
return false;
}
/**
* Validate an email
* @param string $email
* @return boolean
*/
public static function isEmail($email){
if(preg_match("/^([a-zA-Z0-9])+([a-zA-Z0-9\._-])*@([a-zA-Z0-9_-])+([a-zA-Z0-9\._-]+)+$/", $email)){
return true;
}
return false;
}
/**
* Parse and build target attribute for links.
* @param string $value (_self, _blank, _windowopen, _modal)
*/
public static function parseTarget($value='_self'){
$target = '';
switch($value){
default:
case '0':
case '_self':
break;
case '1':
case '_blank':
$target = "target=\"_blank\"";
break;
case '2':
case '_windowopen':
$target = "onclick=\"window.open(this.href,'targetWindow','toolbar=no,location=no,status=no,menubar=no,scrollbars=yes,resizable=yes,false');return false;\"";
break;
case '3':
case '_modal':
$target = "";
break;
}
return $target;
}
/**
* Truncate string by $length
* @param string $string
* @param int $length
* @param string $etc
* @return string
*/
public static function truncate($string, $length, $etc='...'){
return defined('MB_OVERLOAD_STRING')
? self::_mb_truncate($string, $length, $etc)
: self::_truncate($string, $length, $etc);
}
/**
* Truncate string if it's size over $length
* @param string $string
* @param int $length
* @param string $etc
* @return string
*/
private static function _truncate($string, $length, $etc='...'){
if ($length>0 && $length<strlen($string)){
$buffer = '';
$buffer_length = 0;
$parts = preg_split('/(<[^>]*>)/', $string, -1, PREG_SPLIT_DELIM_CAPTURE);
$self_closing_tag = split(',', 'area,base,basefont,br,col,frame,hr,img,input,isindex,link,meta,param,embed');
$open = array();
foreach($parts as $i => $s){
if( false===strpos($s, '<') ){
$s_length = strlen($s);
if ($buffer_length + $s_length < $length){
$buffer .= $s;
$buffer_length += $s_length;
} else if ($buffer_length + $s_length == $length) {
if ( !empty($etc) ){
$buffer .= ($s[$s_length - 1]==' ') ? $etc : " $etc";
}
break;
} else {
$words = preg_split('/([^\s]*)/', $s, - 1, PREG_SPLIT_DELIM_CAPTURE);
$space_end = false;
foreach ($words as $w){
if ($w_length = strlen($w)){
if ($buffer_length + $w_length < $length){
$buffer .= $w;
$buffer_length += $w_length;
$space_end = (trim($w) == '');
} else {
if ( !empty($etc) ){
$more = $space_end ? $etc : " $etc";
$buffer .= $more;
$buffer_length += strlen($more);
}
break;
}
}
}
break;
}
} else {
preg_match('/^<([\/]?\s?)([a-zA-Z0-9]+)\s?[^>]*>$/', $s, $m);
//$tagclose = isset($m[1]) && trim($m[1])=='/';
if (empty($m[1]) && isset($m[2]) && !in_array($m[2], $self_closing_tag)){
array_push($open, $m[2]);
} else if (trim($m[1])=='/') {
$tag = array_pop($open);
if ($tag != $m[2]){
// uncomment to to check invalid html string.
// die('invalid close tag: '. $s);
}
}
$buffer .= $s;
}
}
// close tag openned.
while(count($open)>0){
$tag = array_pop($open);
$buffer .= "</$tag>";
}
return $buffer;
}
return $string;
}
/**
* Truncate mutibyte string if it's size over $length
* @param string $string
* @param int $length
* @param string $etc
* @return string
*/
private static function _mb_truncate($string, $length, $etc='...'){
$encoding = mb_detect_encoding($string);
if ($length>0 && $length<mb_strlen($string, $encoding)){
$buffer = '';
$buffer_length = 0;
$parts = preg_split('/(<[^>]*>)/', $string, -1, PREG_SPLIT_DELIM_CAPTURE);
$self_closing_tag = explode(',', 'area,base,basefont,br,col,frame,hr,img,input,isindex,link,meta,param,embed');
$open = array();
foreach($parts as $i => $s){
if (false === mb_strpos($s, '<')){
$s_length = mb_strlen($s, $encoding);
if ($buffer_length + $s_length < $length){
$buffer .= $s;
$buffer_length += $s_length;
} else if ($buffer_length + $s_length == $length) {
if ( !empty($etc) ){
$buffer .= ($s[$s_length - 1]==' ') ? $etc : " $etc";
}
break;
} else {
$words = preg_split('/([^\s]*)/', $s, -1, PREG_SPLIT_DELIM_CAPTURE);
$space_end = false;
foreach ($words as $w){
if ($w_length = mb_strlen($w, $encoding)){
if ($buffer_length + $w_length < $length){
$buffer .= $w;
$buffer_length += $w_length;
$space_end = (trim($w) == '');
} else {
if ( !empty($etc) ){
$more = $space_end ? $etc : " $etc";
$buffer .= $more;
$buffer_length += mb_strlen($more);
}
break;
}
}
}
break;
}
} else {
preg_match('/^<([\/]?\s?)([a-zA-Z0-9]+)\s?[^>]*>$/', $s, $m);
//$tagclose = isset($m[1]) && trim($m[1])=='/';
if (empty($m[1]) && isset($m[2]) && !in_array($m[2], $self_closing_tag)){
array_push($open, $m[2]);
} else if (trim($m[1])=='/') {
$tag = array_pop($open);
if ($tag != $m[2]){
// uncomment to to check invalid html string.
// die('invalid close tag: '. $s);
}
}
$buffer .= $s;
}
}
// close tag openned.
while(count($open)>0){
$tag = array_pop($open);
$buffer .= "</$tag>";
}
return $buffer;
}
return $string;
}
/**
* Extract images tag from $text
* @param string $text
* @return array src of images:
*/
public static function extractImages(&$text){
$searchTags = array(
'img' => '/<img[^>]+>/i',
'input' => '/<input[^>]+type\s?=\s?"image"[^>]+>/i'
);
$searchSrc = '/src\s?=\s?"([^"]*)"/i';
$images = array();
foreach ($searchTags as $tag => $regex){
preg_match_all($regex, $text, $m);
if (count($m)){
foreach ($m[0] as $htmltag){
preg_match_all($searchSrc, $htmltag, $msrc);
if (count($msrc) && isset($msrc[1])){
foreach ($msrc[1] as $src){
array_push($images, $src);
}
}
$text = str_replace($htmltag, '', $text);
}
}
}
return $images;
}
/**
* Get content of remote file and save it to cache.
* @param string $url
*/
public static function getRemoteFile($url){
if (self::isUrl($url)){
$infourl = self::parseUrl($url);
if (isset($infourl['path'])){
preg_match("/^\/[^\.]+\.([^\/]+)$/", $infourl['path'], $ext);
if (isset($ext[1])){
$ext = $ext[1];
} else {
$ext = 'cache';
}
}
$filename = JPATH_CACHE . DS . md5($url) . ".$ext";
if (file_exists($filename)){
// cache exists
return array($filename);
}
$content = '';
if ( function_exists('curl_init') ){
// initialize a new curl resource
$ch = curl_init();
// set the url to fetch
curl_setopt($ch, CURLOPT_URL, $url);
// don't give me the headers just the content
curl_setopt($ch, CURLOPT_HEADER, 0);
// return the value instead of printing the response to browser
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
// use a user agent to mimic a browser
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.1; rv:8.0.1) Gecko/20100101 Firefox/8.0.1');
$content = curl_exec($ch);
// remember to always close the session and free all resources
curl_close($ch);
if (!$content){
return "<br>Cannot get content of file.";
}
} else if ( ini_get('allow_url_fopen')==1 ){
$content = file_get_contents($url);
if (!$content){
return "Cannot get content of file.";
}
} else {
$host = $infourl['host'];
$path = isset($infourl['path']) ? $infourl['path'] : '/';
if (isset($infourl['query'])){
$path .= '?' . $infourl['query'];
}
$port = isset($infourl['port']) ? $infourl['port'] : 80;
$timeout = 10;
$fp = @fsockopen($host, $port, $errno, $errstr, $timeout);
if (!$fp){
return "Cannot retrieve $url";
} else {
fputs($fp, "GET $path HTTP/1.0\r\n" .
"Host: $host\r\n" .
"User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:8.0.1) Gecko/20100101 Firefox/8.0.1\r\n" .
"Accept: */*\r\n" .
"Accept-Language: en-us,en;q=0.5\r\n" .
"Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\n" .
"Keep-Alive: 300\r\n" .
"Connection: keep-alive\r\n" .
"Referer: http://$host\r\n\r\n");
while ( $line = fread($fp, 4096) ){
$content .= $line;
}
fclose($fp);
// strip the headers
$pos = strpos($content, "\r\n\r\n");
$content = substr($content, $pos + 4);
}
}
if ($content){
// file_put_contents($filename, $content);
// return array($filename);
return self::writeToFile($filename, $content);
}
} else {
return "Invalid Url.";
}
}
/**
* Write $content to file. Check and create folder if it is not exists.
* @param string $filename
* @param string $content
* @param boolean $override
*/
public static function writeToFile($filename, $content, $overwrite=true){
$file_exists = file_exists($filename);
if (!$overwrite && $file_exists){
return "File exists!";
} else if (!$file_exists){
// create folder if need.
$pathname = dirname($filename);
if (!file_exists($pathname)){
mkdir($pathname, 0755, true);
}
}
$fh = fopen($filename, 'w') or die("SjTools::writeToFile - Can't open file: $filename");
fwrite($fh, $content);
fclose($fh);
return array($filename);
}
/**
* Joomla! JString::parse url
* @param string $url
*/
public static function parseUrl($url){
$result = array();
// Build arrays of values we need to decode before parsing
$entities = array('%21', '%2A', '%27', '%28', '%29', '%3B', '%3A', '%40', '%26', '%3D', '%24', '%2C', '%2F', '%3F', '%25', '%23', '%5B', '%5D');
$replacements = array('!', '*', "'", "(", ")", ";", ":", "@", "&", "=", "$", ",", "/", "?", "%", "#", "[", "]");
// Create encoded URL with special URL characters decoded so it can be parsed
// All other charcters will be encoded
$encodedURL = str_replace($entities, $replacements, urlencode($url));
// Parse the encoded URL
$encodedParts = parse_url($encodedURL);
// Now, decode each value of the resulting array
foreach ($encodedParts as $key => $value) {
$result[$key] = urldecode($value);
}
return $result;
}
/**
* debug variable
* @param unknown_type $var
* @param string $label
* @param boolean $echo
* @return string
*/
public static function dump($var, $label=null, $echo=true){
// format the label
$label = ($label===null) ? '' : rtrim($label) . ' ';
// var_dump the variable into a buffer and keep the output
ob_start();
var_dump($var);
$output = ob_get_clean();
// neaten the newlines and indents
$output = preg_replace("/\]\=\>\n(\s+)/m", "] => ", $output);
if(!extension_loaded('xdebug')) {
$output = htmlspecialchars($output, ENT_QUOTES);
}
$output = '<pre>' . $label . $output . '</pre>';
if ($echo) {
echo($output);
}
return $output;
}
/**
* Include class file use SjTools is namespace.
* @param string $object - suffix class name.
* eg. image -> import SjTools_Image class.
*/
private static function _import($object){
$filename = dirname(__FILE__) . DS . 'sjtools_' . strtolower($object) . '.php';
if(file_exists($filename)){
include_once $filename;
} else {
die('SjTools::_import - File: ' . $filename . ' is not exists!');
}
}
/**
* Get instance of SjTools_Image
*
*/
private static function _getImage(){
if( self::$image === null ){
self::_import('image');
self::$image = &SjTools_Image::getInstance();
}
return self::$image;
}
}