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<?php
class DUP_JSON
{
protected static $_messages = array(
JSON_ERROR_NONE => 'No error has occurred',
JSON_ERROR_DEPTH => 'The maximum stack depth has been exceeded',
JSON_ERROR_STATE_MISMATCH => 'Invalid or malformed JSON',
JSON_ERROR_CTRL_CHAR => 'Control character error, possibly incorrectly encoded',
JSON_ERROR_SYNTAX => 'Syntax error',
JSON_ERROR_UTF8 => 'Malformed UTF-8 characters. To resolve see https://snapcreek.com/duplicator/docs/faqs-tech/?utm_source=duplicator_free&utm_medium=wordpress_plugin&utm_campaign=problem_resolution&utm_content=malformed_utf8#faq-package-170-q'
);
public static function customEncode($value, $iteration = 1)
{
if (DUP_Util::$on_php_53_plus) {
$encoded = json_encode($value);
switch (json_last_error()) {
case JSON_ERROR_NONE:
return $encoded;
case JSON_ERROR_DEPTH:
throw new RuntimeException('Maximum stack depth exceeded');
case JSON_ERROR_STATE_MISMATCH:
throw new RuntimeException('Underflow or the modes mismatch');
case JSON_ERROR_CTRL_CHAR:
throw new RuntimeException('Unexpected control character found');
case JSON_ERROR_SYNTAX:
throw new RuntimeException('Syntax error, malformed JSON');
case JSON_ERROR_UTF8:
if ($iteration == 1) {
$clean = self::makeUTF8($value);
return self::customEncode($clean, $iteration + 1);
} else {
throw new RuntimeException('UTF-8 error loop');
}
default:
throw new RuntimeException('Unknown error');
}
} else {
return self::oldCustomEncode($value);
}
}
public static function encode($value, $options = 0)
{
$result = json_encode($value, $options);
if ($result !== FALSE) {
return $result;
}
if (function_exists('json_last_error')) {
$message = self::$_messages[json_last_error()];
} else {
$message = __('One or more filenames isn\'t compatible with JSON encoding');
}
throw new RuntimeException($message);
}
public static function safeEncode($value)
{
$jsonString = json_encode($value);
if (($jsonString === false) || trim($jsonString) == '') {
$jsonString = self::customEncode($value);
if (($jsonString === false) || trim($jsonString) == '') {
throw new Exception('Unable to generate JSON from object');
}
}
return $jsonString;
}
public static function decode($json, $assoc = false)
{
$result = json_decode($json, $assoc);
if ($result) {
return $result;
}
if (function_exists('json_last_error')) {
throw new RuntimeException(self::$_messages[json_last_error()]);
} else {
throw new RuntimeException("DUP_JSON decode error");
}
}
private static function makeUTF8($mixed)
{
if (is_array($mixed)) {
foreach ($mixed as $key => $value) {
$mixed[$key] = self::makeUTF8($value);
}
} else if (is_string($mixed)) {
return utf8_encode($mixed);
}
return $mixed;
}
private static function escapeString($str)
{
return addcslashes($str, "\v\t\n\r\f\"\\/");
}
private static function oldCustomEncode($in)
{
$out = "";
if (is_object($in)) {
$arr[$key] = "\"".self::escapeString($key)."\":\"{$val}\"";
$in = get_object_vars($in);
}
if (is_array($in)) {
$obj = false;
$arr = array();
foreach ($in AS $key => $val) {
if (!is_numeric($key)) {
$obj = true;
}
$arr[$key] = self::oldCustomEncode($val);
}
if ($obj) {
foreach ($arr AS $key => $val) {
$arr[$key] = "\"".self::escapeString($key)."\":{$val}";
}
$val = implode(',', $arr);
$out .= "{{$val}}";
} else {
$val = implode(',', $arr);
$out .= "[{$val}]";
}
} elseif (is_bool($in)) {
$out .= $in ? 'true' : 'false';
} elseif (is_null($in)) {
$out .= 'null';
} elseif (is_string($in)) {
$out .= "\"".self::escapeString($in)."\"";
} else {
$out .= $in;
}
return "{$out}";
}
}