87 lines
2.5 KiB
PHP
87 lines
2.5 KiB
PHP
<?php
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/* vim: set expandtab sw=4 ts=4 sts=4: */
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/**
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* Javascript escaping functions.
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*
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* @package phpMyAdmin
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*
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*/
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/**
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* Format a string so it can be a string inside JavaScript code inside an
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* eventhandler (onclick, onchange, on..., ).
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* This function is used to displays a javascript confirmation box for
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* "DROP/DELETE/ALTER" queries.
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*
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* @uses PMA_escapeJsString()
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* @uses PMA_backquote()
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* @uses is_string()
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* @uses htmlspecialchars()
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* @uses str_replace()
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* @param string $a_string the string to format
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* @param boolean $add_backquotes whether to add backquotes to the string or not
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*
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* @return string the formatted string
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*
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* @access public
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*/
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function PMA_jsFormat($a_string = '', $add_backquotes = true)
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{
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if (is_string($a_string)) {
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$a_string = htmlspecialchars($a_string);
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$a_string = PMA_escapeJsString($a_string);
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/**
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* @todo what is this good for?
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*/
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$a_string = str_replace('#', '\\#', $a_string);
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}
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return (($add_backquotes) ? PMA_backquote($a_string) : $a_string);
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} // end of the 'PMA_jsFormat()' function
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/**
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* escapes a string to be inserted as string a JavaScript block
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* enclosed by <![CDATA[ ... ]]>
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* this requires only to escape ' with \' and end of script block
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*
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* We also remove NUL byte as some browsers (namely MSIE) ignore it and
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* inserting it anywhere inside </script would allow to bypass this check.
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*
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* @uses strtr()
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* @uses preg_replace()
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* @param string $string the string to be escaped
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* @return string the escaped string
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*/
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function PMA_escapeJsString($string)
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{
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return preg_replace('@</script@i', '</\' + \'script',
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strtr($string, array(
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"\000" => '',
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'\\' => '\\\\',
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'\'' => '\\\'',
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"\n" => '\n',
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"\r" => '\r')));
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}
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/**
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* Prints an javascript assignment with proper escaping of a value
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* and support for assigning array of strings.
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*
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* @param string $key Name of value to set
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* @param mixed $value Value to set, can be either string or array of strings
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*/
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function PMA_printJsValue($key, $value) {
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echo $key . ' = ';
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if (is_array($value)) {
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echo '[';
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foreach ($value as $id => $val) {
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echo "'" . PMA_escapeJsString($val) . "',";
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}
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echo "];\n";
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} else {
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echo "'" . PMA_escapeJsString($value) . "';\n";
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}
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}
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?>
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