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<?php
class jQueryAnnotate {
/**
* Constructor
* Opens and reads items from the data file
*
* @param string $filename of the data file, default is 'data.csv'
*
* @access public
* @return void
*/
function __construct($filename = "data.csv") {
$this->filename = $filename;
$this->file = @fopen($filename, "r+");
$this->items = $this->csv_to_array();
}
/**
* Outputs data file content in a JSON format
*
* @access public
* @return void
*/
function get() {
$items = $this->items;
echo "[\n";
foreach($items as $item) {
if($item) {
$a = explode("\t", $item);
echo $this->format($a);
}
}
echo "]\n";
}
/**
* Adds a new annotation into the data file
* All HTML and special characters are stripped out
* As a result outputs the new saved id of the annotation
*
* @access public
* @return void
*/
function save() {
$data = array(
$_GET["top"],
$_GET["left"],
$_GET["width"],
$_GET["height"],
$this->html2txt($_GET["text"]),
"id_".md5($_GET["text"]),
"true"
);
$this->delete($data); // Delete previous entry
if($data[4] && file_put_contents( $this->filename, implode("\t",$data)."\n", FILE_APPEND | LOCK_EX ))
echo '{ "annotation_id": "id_'.md5($_GET["text"]).'" }';
}
/**
* Deletes an annotation from the data file
* As a result outputs a 200 HTTP header
*
* @access public
* @return void
*/
function delete($to_delete_old = null) {
if(!$to_delete_old)
$to_delete = array(
$_GET["top"],
$_GET["left"],
$_GET["width"],
$_GET["height"],
$_GET["text"],
$_GET["id"]
);
$items = $this->items;
$i = 0;
foreach($items as $item) {
if($item) {
$item = explode("\t", $item);
if( !$to_delete_old ) {
if( ($item[5] == $to_delete[5]) && ($item[6] == "true\n") )
unset($items[$i]);
}
else {
// If top and left exist already, than delete them due to exclude clones
if( ($item[0] == $to_delete_old[0]) && ($item[1] == $to_delete_old[1]) && ($item[6] == "true\n") )
unset($items[$i]);
}
}
$i++;
}
if( file_put_contents( $this->filename, implode("",$items), LOCK_EX ))
header("HTTP/1.0 200 OK");
}
/**
* Converts the csv content from data file to an array
*
* @access public
* @return array
*/
function csv_to_array() {
if($this->file) {
$csv_array = array();
while (!feof($this->file)) {
$csv_array[] = fgets($this->file);
}
}
else
$this->print_error("Could not open file.");
return $csv_array;
}
/**
* Converts an array to a JSON required format
*
* @param array $t item from the data file content array
* @access public
* @return string
*/
function format($t) {
if(is_array($t) && count($t) == 7)
return "
{
\"top\": $t[0],
\"left\": $t[1],
\"width\": $t[2],
\"height\": $t[3],
\"text\": \"$t[4]\",
\"id\": \"$t[5]\",
\"editable\": $t[6]
},
";
}
/**
* Strip a string from unwanted tags and special characters
*
* @param string $text to be cleared
* @access public
* @return string
*/
function html2txt($text) {
$search = array ('@<script[^>]*?>.*?</script>@si', // Strip out javascript
'@<[\/\!]*?[^<>]*?>@si', // Strip out HTML tags
'@([\r\n])[\s]+@', // Strip out white space
'@&(quot|#34);@i', // Replace HTML entities
'@&(lt|#60);@i',
'@&(gt|#62);@i',
'@&(nbsp|#160);@i',
'@&#(\d+);@e'); // evaluate as php
$replace = array ('',
'',
'\1',
'"',
'<',
'>',
' ',
'chr(\1)');
return trim(preg_replace($search, $replace, $text));
}
/**
* Prints a <pre> formated error message
*
* @param string $m message to be printed as an error
* @access public
* @return string
*/
function print_error($m) {
die("<pre>$m</pre>\n");
}
/**
* Destructor
* Closes the file the constructor opened.
*
* @access public
* @return void
*/
function __destruct() {
fclose($this->file);
}
}
?>
. Tam ide o to, čo a akým spôsobom sa pridáva do textu, ktorý chceš aby odhalil ten obrázok či čo. Daj odkaz na nejaký manuál k tomu...