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<?php
/**
* @package Sj Video
* @version 1.0
* @license http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL
* @copyright (c) 2013 YouTech Company. All Rights Reserved.
* @author YouTech Company http://www.smartaddons.com
*
*/
defined('_JEXEC') or die;
error_reporting(error_reporting() & ~E_NOTICE);
JLoader::register('ImageHelper', dirname(__FILE__).'/helper_image.php');
if (!class_exists('BaseHelper')){
/**
* BaseHelper for com_content only.
*/
abstract class BaseHelper{
/**
* Cache all image path or url
* @var array
*/
protected static $image_cache = array();
/**
* strips all tag, except a, em, strong
* @param string $text
* @return string
*/
public function _cleanText($text){
$text = str_replace('<p>', ' ', $text);
$text = str_replace('</p>', ' ', $text);
$text = strip_tags($text, '<a><em><strong>');
$text = trim($text);
return $text;
}
/**
* Parse and build target attribute for links.
* @param string $value (_self, _blank, _windowopen, _modal)
* _blank Opens the linked document in a new window or tab
* _self Opens the linked document in the same frame as it was clicked (this is default)
* _parent Opens the linked document in the parent frame
* _top Opens the linked document in the full body of the window
* _windowopen Opens the linked document in a Window
* _modal Opens the linked document in a Modal Window
*/
public static function parseTarget($type='_self'){
$target = '';
switch($type){
default:
case '_self':
break;
case '_blank':
case '_parent':
case '_top':
$target = 'target="'.$type.'"';
break;
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 '_modal':
// user process
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;
}
/**
* First image in list of images for Article
* @param object $item is an Article of Content
* @param unknown_type $params
* @return Ambigous <NULL, unknown>
*/
public static function getAImage($item, $params, $prefix='imgcfg'){
$images = &self::getAImages($item, $params, $prefix);
return is_array($images) && count($images) ? $images[0] : null;
}
/**
*
* @param unknown_type $item
* @param unknown_type $params
*/
public static function getAImages($item, $params, $prefix='imgcfg'){
$hash = md5( serialize(array($params, 'article')) );
if ( !isset(self::$image_cache[$hash][$item->product_id]) ){
$defaults = array(
'external' => 1,
'image_product' => 1
);
$images_path = array();
$priority = preg_split('/[\s|,|;]/', $params->get($prefix.'_order', 'external, image_product'), -1, PREG_SPLIT_NO_EMPTY);
if ( count($priority) > 0 ){
$priority = array_map('strtolower', $priority);
$mark = array();
for($i=0; $i<count($priority); $i++){
$type = $priority[$i];
if ( array_key_exists($type, $defaults) )
unset($defaults[ $type ]);
if ( $params->get($prefix.'_from_'.$type, 1) )
$mark[ $type ] = 1;
}
}
foreach($defaults as $type => $val){
if ( $params->get($prefix.'_from_'.$type, 1) )
$mark[ $type ] = 1;
}
if ( count($mark) > 0 ){
// prepare data.
$images_data = null;
foreach($mark as $type => $true){
switch ($type){
case 'image_product':
if ($type == 'image_product'){
if($item->product_name_image){
$image_path = 'components/com_jshopping/files/img_products/'.$item->product_name_image;
}else {
$image_path = '';
}
if( !empty($image_path) && file_exists($image_path) ){
$image = array(
'src' => $image_path
);
$image['alt'] = $item->name;
$image['title'] = $item->name;
array_push($images_path, $image);
}
}
break;
case 'external':
$exf = $params->get($prefix.'_external_url', 'images/article/{product_id}/');
preg_match_all('/{([a-zA-Z0-9_]+)}/', $exf, $m);
if ( count($m)==2 && count($m[0])>0 ){
$compat = 1;
foreach ($m[1] as $property){
!property_exists($item, $property) && ($compat=0);
}
if ($compat){
$replace = array();
foreach ($m[1] as $property){
$replace[] = is_null($item->$property) ? '' : $item->$property;
}
$exf = str_replace($m[0], $replace, $exf);
}
}
$files = self::getExternalImages($exf);
for ($i=0; $i<count($files); $i++){
array_push($images_path, array('src'=>$files[$i]));
}
break;
default:
break;
}
}
}
if ( count($images_path) == 0 && $params->get($prefix.'_placeholder', 1)==1){
$images_path[] = array('src'=> $params->get($prefix.'_placeholder_path', null), 'class'=>'placeholder');
}
self::$image_cache[$hash][$item->id] = $images_path;
}
return self::$image_cache[$hash][$item->id];
}
public static function getCImage($item, $params, $prefix='imgcfg'){
$images = &self::getCImages($item, $params, $prefix);
return is_array($images) && count($images) ? $images[0] : null;
}
public static function getCImages($item, $params, $prefix='imgcfg'){
$hash = md5( serialize(array($params, 'category')) );
if ( !isset(self::$image_cache[$hash][$item->id]) ){
$defaults = array(
'external' => 1,
'params' => 1,
'description' => 1
);
$images_path = array();
$priority = preg_split('/[\s|,|;]/', $params->get($prefix.'_order', 'external, params, description'), -1, PREG_SPLIT_NO_EMPTY);
if ( count($priority) > 0 ){
$priority = array_map('strtolower', $priority);
$mark = array();
for($i=0; $i<count($priority); $i++){
$type = $priority[$i];
if ( array_key_exists($type, $defaults) )
unset($defaults[ $type ]);
if ( $params->get($prefix.'_from_'.$type, 1) )
$mark[ $type ] = 1;
}
}
foreach($defaults as $type => $val){
if ( $params->get($prefix.'_from_'.$type, 1) )
$mark[ $type ] = 1;
}
if ( count($mark) > 0 ){
$cparams = null;
if (array_key_exists('params', $mark)){
$cparams = new JRegistry;
$cparams->loadString($item->params);
}
foreach($mark as $type => $true){
switch ($type){
case 'params':
if ( $cparams instanceof JRegistry && $cparams->get('image') ){
$image = array(
'src' => $cparams->get('image')
);
array_push($images_path, $image);
}
break;
case 'description':
$inline_images = self::getInlineImages($item->description);
for ($i=0; $i<count($inline_images); $i++){
array_push($images_path, $inline_images[$i]);
}
break;
case 'external':
$exf = $params->get($prefix.'_external_url', 'images/category/{id}/');
preg_match_all('/{([a-zA-Z0-9_]+)}/', $exf, $m);
if ( count($m)==2 && count($m[0])>0 ){
$compat = 1;
foreach ($m[1] as $property){
!property_exists($item, $property) && ($compat=0);
}
if ($compat){
$replace = array();
foreach ($m[1] as $property){
$replace[] = is_null($item->$property) ? '' : $item->$property;
}
$exf = str_replace($m[0], $replace, $exf);
}
}
$files = self::getExternalImages($exf);
for ($i=0; $i<count($files); $i++){
array_push($images_path, array('src'=>$files[$i]));
}
break;
default:
break;
}
}
}
if ( count($images_path) == 0 && $params->get($prefix.'_placeholder', 1)==1){
$images_path[] = array('src'=> $params->get($prefix.'_placeholder_path', null), 'class'=>'placeholder');
}
self::$image_cache[$hash][$item->id] = $images_path;
}
return self::$image_cache[$hash][$item->id];
}
/**
* Get all image url|path in $text.
* @param string $text
* @return string
*/
public static function getInlineImages($text){
$images = array();
$searchTags = array(
'img' => '/<img[^>]+>/i',
'input' => '/<input[^>]+type\s?=\s?"image"[^>]+>/i'
);
foreach ($searchTags as $tag => $regex){
preg_match_all($regex, $text, $m);
if ( is_array($m) && isset($m[0]) && count($m[0])){
foreach ($m[0] as $htmltag){
$tmp = JUtility::parseAttributes($htmltag);
if ( isset($tmp['src']) ){
if ($tag == 'input'){
array_push( $images, array('src' => $tmp['src']) );
} else {
array_push( $images, $tmp );
}
}
}
}
}
return $images;
}
/**
*
* @param string $path
* @return multitype:multitype:unknown |Ambigous <multitype:, boolean, multitype:unknown multitype:unknown >
*/
public static function getExternalImages($path){
jimport('joomla.filesystem.folder');
$files = array();
// check if $path is url
$path = trim($path);
$isHttp = stripos($path, 'http') === 0;
if ($isHttp){
if ( !JUri::isInternal($path) ){
// is external, test if is valid
if ( version_compare(JVERSION, '3.0.0', '>=') ){
// is Joomla 3
$http = JHttpFactory::getHttp();
$head = $http->head($path);
if ($head->code == 200 || $head->code == 302 || $head->code == 304){
// is valid url
if (preg_match('/image/', $head->headers['Content-Type'])){
// is true image
$files[] = $path;
}
}
} else {
// for Joomla 3 older
$files[] = $path;
}
if (!count($files)){
//var_dump('Url is not valid');
}
return $files;
} else {
$uri = JUri::getInstance($path);
$uri_path = (string)$uri->getPath();
$uri_base = (string)JURI::base(true);
if (stripos($uri_path, $uri_base)===0 && ($baselen = strlen($uri_base))){
$uri_path = substr($uri_path, $baselen);
}
$path = JPATH_BASE.$uri_path;
}
}
if ( ($realpath = realpath($path))===false ){
//var_dump('File or Folder is not exists!');
return $files;
}
if ( is_file($realpath) ){
$files[] = $realpath;
} else if ( is_dir($realpath) ){
$files = JFolder::files($path, '.jpg|.png|.gif', false, true);
}
return $files;
}
/**
* Get an image helper object
* @param string $image - path or url of image
* @param array $options
* @return ImageHelper
*/
public static function getImageHelper($image, $options=array()){
return ImageHelper::init($image, $options);
}
/**
* Resize and return image tag (<img .../>)
* @param string $image - path or url of image
* @param array $options
* @return string
*/
public static function imageTag($image, $options=array()){
return ImageHelper::init($image, $options)->tag();
}
/**
* Resize and return image src
* @param string $image - path or url of image
* @param array $options
* @return string
*/
public static function imageSrc($image, $options=array()){
return ImageHelper::init($image, $options)->src();
}
}
}