/**
* Decodes a JSON string
* @see http://www.php.net/json_decode
* @extracted from PEAR::Services_JSON
*/
static function json_decode($str)
{
$str = preg_replace(array('#^\\s*//(.+)$#m', '#^\\s*/\\*(.+)\\*/#Us', '#/\\*(.+)\\*/\\s*$#Us'), '', $str);
$str = trim($str);
switch (strtolower($str)) {
case 'true':
return true;
case 'false':
return false;
case 'null':
return null;
default:
$m = array();
if (is_numeric($str)) {
return (double) $str == (int) $str ? (int) $str : (double) $str;
} elseif (preg_match('/^("|\').*(\\1)$/s', $str, $m) && $m[1] == $m[2]) {
$delim = substr($str, 0, 1);
$chrs = substr($str, 1, -1);
$utf8 = '';
$strlen_chrs = strlen($chrs);
for ($c = 0; $c < $strlen_chrs; ++$c) {
$substr_chrs_c_2 = substr($chrs, $c, 2);
$ord_chrs_c = ord($chrs[$c]);
switch (true) {
case $substr_chrs_c_2 == '\\b':
$utf8 .= chr(0x8);
++$c;
break;
case $substr_chrs_c_2 == '\\t':
$utf8 .= chr(0x9);
++$c;
break;
case $substr_chrs_c_2 == '\\n':
$utf8 .= chr(0xa);
++$c;
break;
case $substr_chrs_c_2 == '\\f':
$utf8 .= chr(0xc);
++$c;
break;
case $substr_chrs_c_2 == '\\r':
$utf8 .= chr(0xd);
++$c;
break;
case $substr_chrs_c_2 == '\\"':
case $substr_chrs_c_2 == '\\\'':
case $substr_chrs_c_2 == '\\\\':
case $substr_chrs_c_2 == '\\/':
if ($delim == '"' && $substr_chrs_c_2 != '\\\'' || $delim == "'" && $substr_chrs_c_2 != '\\"') {
$utf8 .= $chrs[++$c];
}
break;
case preg_match('/\\\\u[0-9A-F]{4}/i', substr($chrs, $c, 6)):
// single, escaped unicode character
$utf16 = chr(hexdec(substr($chrs, $c + 2, 2))) . chr(hexdec(substr($chrs, $c + 4, 2)));
$utf8 .= $this->utf162utf8($utf16);
$c += 5;
break;
case $ord_chrs_c >= 0x20 && $ord_chrs_c <= 0x7f:
$utf8 .= $chrs[$c];
break;
case ($ord_chrs_c & 0xe0) == 0xc0:
// characters U-00000080 - U-000007FF, mask 110XXXXX
$utf8 .= substr($chrs, $c, 2);
++$c;
break;
case ($ord_chrs_c & 0xf0) == 0xe0:
// characters U-00000800 - U-0000FFFF, mask 1110XXXX
$utf8 .= substr($chrs, $c, 3);
$c += 2;
break;
case ($ord_chrs_c & 0xf8) == 0xf0:
// characters U-00010000 - U-001FFFFF, mask 11110XXX
$utf8 .= substr($chrs, $c, 4);
$c += 3;
break;
case ($ord_chrs_c & 0xfc) == 0xf8:
// characters U-00200000 - U-03FFFFFF, mask 111110XX
$utf8 .= substr($chrs, $c, 5);
$c += 4;
break;
case ($ord_chrs_c & 0xfe) == 0xfc:
// characters U-04000000 - U-7FFFFFFF, mask 1111110X
$utf8 .= substr($chrs, $c, 6);
$c += 5;
break;
}
}
return $utf8;
} elseif (preg_match('/^\\[.*\\]$/s', $str) || preg_match('/^\\{.*\\}$/s', $str)) {
if ($str[0] == '[') {
$stk = array(3);
$arr = array();
} else {
$stk = array(4);
$obj = array();
}
array_push($stk, array('what' => 1, 'where' => 0, 'delim' => false));
$chrs = substr($str, 1, -1);
$chrs = preg_replace(array('#^\\s*//(.+)$#m', '#^\\s*/\\*(.+)\\*/#Us', '#/\\*(.+)\\*/\\s*$#Us'), '', $chrs);
$chrs = trim($chrs);
if ($chrs == '') {
if (reset($stk) == 3) {
return $arr;
} else {
return $obj;
}
}
$strlen_chrs = strlen($chrs);
for ($c = 0; $c <= $strlen_chrs; ++$c) {
$top = end($stk);
$substr_chrs_c_2 = substr($chrs, $c, 2);
if ($c == $strlen_chrs || $chrs[$c] == ',' && $top['what'] == 1) {
$slice = substr($chrs, $top['where'], $c - $top['where']);
array_push($stk, array('what' => 1, 'where' => $c + 1, 'delim' => false));
if (reset($stk) == 3) {
array_push($arr, Jaws_UTF8::json_decode($slice));
} elseif (reset($stk) == 4) {
$parts = array();
if (preg_match('/^\\s*(["\'].*[^\\\\]["\'])\\s*:\\s*(\\S.*),?$/Uis', $slice, $parts)) {
$key = Jaws_UTF8::json_decode($parts[1]);
$val = Jaws_UTF8::json_decode($parts[2]);
$obj[$key] = $val;
} elseif (preg_match('/^\\s*(\\w+)\\s*:\\s*(\\S.*),?$/Uis', $slice, $parts)) {
$key = $parts[1];
$val = Jaws_UTF8::json_decode($parts[2]);
$obj[$key] = $val;
}
}
} elseif (($chrs[$c] == '"' || $chrs[$c] == "'") && $top['what'] != 2) {
array_push($stk, array('what' => 2, 'where' => $c, 'delim' => $chrs[$c]));
} elseif ($chrs[$c] == $top['delim'] && $top['what'] == 2 && (strlen(substr($chrs, 0, $c)) - strlen(rtrim(substr($chrs, 0, $c), '\\'))) % 2 != 1) {
array_pop($stk);
} elseif ($chrs[$c] == '[' && in_array($top['what'], array(1, 3, 4))) {
array_push($stk, array('what' => 3, 'where' => $c, 'delim' => false));
} elseif ($chrs[$c] == ']' && $top['what'] == 3) {
array_pop($stk);
} elseif ($chrs[$c] == '{' && in_array($top['what'], array(1, 3, 4))) {
array_push($stk, array('what' => 4, 'where' => $c, 'delim' => false));
} elseif ($chrs[$c] == '}' && $top['what'] == 4) {
array_pop($stk);
} elseif ($substr_chrs_c_2 == '/*' && in_array($top['what'], array(1, 3, 4))) {
array_push($stk, array('what' => 5, 'where' => $c, 'delim' => false));
$c++;
} elseif ($substr_chrs_c_2 == '*/' && $top['what'] == 5) {
array_pop($stk);
$c++;
for ($i = $top['where']; $i <= $c; ++$i) {
$chrs = substr_replace($chrs, ' ', $i, 1);
}
}
}
if (reset($stk) == 3) {
return $arr;
} elseif (reset($stk) == 4) {
return $obj;
}
}
}
}
/**
* Does the recursion on the data being fetched
*
* @access private
* @param mixed $keys The key being fetched, it can be an array with multiple keys in it to fetch and
* then an array will be returned accourdingly.
* @param string $method Which super global is being fetched from
* @param bool $filter Returns filtered data or not
* @param bool $xss_strip Returns stripped html data tags/attributes
* @param bool $json_decode Decode JSON data or not
* @return mixed Null if there is no data else an string|array with the processed data
*/
private function _fetch($keys, $method = '', $filters = true, $xss_strip = false, $json_decode = false)
{
$method = empty($method) ? strtolower($_SERVER['REQUEST_METHOD']) : $method;
if (is_array($keys)) {
$result = array();
foreach ($keys as $key) {
$k = strtok($key, ':');
$result[$k] = $this->_fetch($key, $method, $filters, $xss_strip, $json_decode);
}
return $result;
}
$key = strtok($keys, ':');
$type = strtok(':');
if (isset($this->data[$method][$key])) {
$value = $json_decode ? Jaws_UTF8::json_decode($this->data[$method][$key]) : $this->data[$method][$key];
// try unserialize value
if (false !== ($tvalue = @unserialize($value))) {
$value = $tvalue;
unset($tvalue);
}
// filter not allowed html tags/attributes
if ($xss_strip) {
$value = $this->strip_tags_attributes($value);
}
if ($filters === true) {
$filters = $this->_filtersPriority;
} elseif (!empty($filters)) {
$filters = array('strip_null', $filters);
} else {
$filters = array('strip_null');
}
if (is_array($value)) {
array_walk_recursive($value, array(&$this, 'filter'), $filters);
} else {
$this->filter($value, $key, $filters);
}
return $this->func_type_check[$type]($value) ? $value : null;
}
return null;
}
