}
/**
- * Decodes a js object (not necessarily strict json but valid js) into an array or primitive type
+ * Decodes a js variable (not necessarily strict json but valid js) into a php variable.
+ *
+ * This is similar to using json_decode($js, TRUE) but more forgiving about syntax.
*
* ex. {a: 'Apple', 'b': "Banana", c: [1, 2, 3]}
+ * Returns: [
+ * 'a' => 'Apple',
+ * 'b' => 'Banana',
+ * 'c' => [1, 2, 3],
+ * ]
*
* @param string $js
* @return mixed
*/
public static function decode($js) {
- if (!class_exists('Services_JSON')) {
- require_once 'packages/OpenFlashChart/php-ofc-library/JSON.php';
+ $js = trim($js);
+ if ($js[0] === "'" || $js[0] === '"') {
+ // Use a temp placeholder for escaped backslashes
+ return str_replace(['\\\\', "\\'", '\\"', '\\&', '\\/', '**backslash**'], ['**backslash**', "'", '"', '&', '/', '\\'], substr($js, 1, -1));
}
- $codec = new Services_JSON();
- $result = $codec->decode($js);
- // Converts stdClass to array
- return json_decode(json_encode($result), TRUE);
+ if ($js[0] === '{' || $js[0] === '[') {
+ $obj = self::getRawProps($js);
+ foreach ($obj as $idx => $item) {
+ $obj[$idx] = self::decode($item);
+ }
+ return $obj;
+ }
+ return json_decode($js);
}
/**
- * Gets the properties of a javascript object WITHOUT decoding them.
+ * Gets the properties of a javascript object/array WITHOUT decoding them.
*
* Useful when the object might contain js functions, expressions, etc. which cannot be decoded.
* Returns an array with keys as property names and values as raw strings of js.
*
- * Ex: {foo: getFoo(arg), bar: function() {return "bar"}}
- * Returns [
+ * Ex Input: {foo: getFoo(arg), 'bar': function() {return "bar";}}
+ * Returns: [
* 'foo' => 'getFoo(arg)',
- * 'bar' => 'function() {return "bar"}',
+ * 'bar' => 'function() {return "bar";}',
* ]
*
* @param $js
* @return array
* @throws \Exception
*/
- public static function getObjectProps($js) {
+ public static function getRawProps($js) {
$js = trim($js);
- if (!is_string($js) || !($js[0] === '{')) {
- throw new Exception("Invalid js object string passed to CRM_Utils_JS::getObjectProps");
+ if (!is_string($js) || $js === '' || !($js[0] === '{' || $js[0] === '[')) {
+ throw new Exception("Invalid js object string passed to CRM_Utils_JS::getRawProps");
}
$chars = str_split(substr($js, 1));
- $prev = NULL;
- $key = NULL;
- $quote = NULL;
+ $isEscaped = $quote = NULL;
+ $type = $js[0] === '{' ? 'object' : 'array';
+ $key = $type == 'array' ? 0 : NULL;
$item = '';
- $length = strlen($js) - 2;
- $quotes = ['"', "'"];
- $enclosures = [
- '{' => 0,
- '(' => 0,
- '[' => 0,
- ];
- $closers = [
+ $end = strlen($js) - 2;
+ $quotes = ['"', "'", '/'];
+ $brackets = [
'}' => '{',
')' => '(',
']' => '[',
+ ':' => '?',
];
+ $enclosures = array_fill_keys($brackets, 0);
$result = [];
foreach ($chars as $index => $char) {
- // Open quotes - we'll ignore everything inside
- if (in_array($char, $quotes) && $prev != '\\' && !$quote) {
- $quote = $char;
- }
- // Close quotes
- elseif (in_array($char, $quotes) && $prev != '\\' && $char === $quote) {
- $quote = NULL;
+ if (!$isEscaped && in_array($char, $quotes, TRUE)) {
+ // Open quotes, taking care not to mistake the division symbol for opening a regex
+ if (!$quote && !($char == '/' && preg_match('{[\w)]\s*$}', $item))) {
+ $quote = $char;
+ }
+ // Close quotes
+ elseif ($char === $quote) {
+ $quote = NULL;
+ }
}
if (!$quote) {
- // Skip opening whitespace between properties
- if ($char === ' ' && !strlen($item)) {
- $prev = $char;
- continue;
- }
// Delineates property key
- if ($char == ':' && !array_filter($enclosures)) {
+ if ($char == ':' && !array_filter($enclosures) && !$key) {
$key = $item;
$item = '';
- $prev = $char;
continue;
}
// Delineates property value
- if (($char == ',' || ($char == '}' && $index == $length)) && !array_filter($enclosures) && isset($key)) {
- $result[trim(trim($key), '"\'')] = $item;
+ if (($char == ',' || $index == $end) && !array_filter($enclosures) && isset($key) && trim($item) !== '') {
+ // Trim, unquote, and unescape characters in key
+ if ($type == 'object') {
+ $key = trim($key);
+ $key = in_array($key[0], $quotes) ? self::decode($key) : $key;
+ }
+ $result[$key] = trim($item);
+ $key = $type == 'array' ? $key + 1 : NULL;
$item = '';
- $prev = $char;
continue;
}
// Open brackets - we'll ignore delineators inside
$enclosures[$char]++;
}
// Close brackets
- if (isset($closers[$char]) && $enclosures[$closers[$char]]) {
- $enclosures[$closers[$char]]--;
+ if (isset($brackets[$char]) && $enclosures[$brackets[$char]]) {
+ $enclosures[$brackets[$char]]--;
}
}
$item .= $char;
- $prev = $char;
+ // We are escaping the next char if this is a backslash not preceded by an odd number of backslashes
+ $isEscaped = $char === '\\' && ((strlen($item) - strlen(rtrim($item, '\\'))) % 2);
}
return $result;
}
+ /**
+ * Converts a php array to javascript object/array notation (not strict JSON).
+ *
+ * Does not encode keys unless they contain special characters.
+ * Does not encode values by default, so either specify $encodeValues = TRUE,
+ * or pass strings of valid js/json as values (per output from getRawProps).
+ * @see CRM_Utils_JS::getRawProps
+ *
+ * @param array $obj
+ * @param bool $encodeValues
+ * @return string
+ */
+ public static function writeObject($obj, $encodeValues = FALSE) {
+ $js = [];
+ $brackets = isset($obj[0]) && array_keys($obj) === range(0, count($obj) - 1) ? ['[', ']'] : ['{', '}'];
+ foreach ($obj as $key => $val) {
+ if ($encodeValues) {
+ $val = json_encode($val, JSON_UNESCAPED_SLASHES);
+ }
+ if ($brackets[0] == '{') {
+ // Enclose the key in quotes unless it is purely alphanumeric
+ if (preg_match('/\W/', $key)) {
+ // Prefer single quotes
+ $key = preg_match('/^[\w "]+$/', $key) ? "'" . $key . "'" : json_encode($key, JSON_UNESCAPED_SLASHES);
+ }
+ $js[] = "$key: $val";
+ }
+ else {
+ $js[] = $val;
+ }
+ }
+ return $brackets[0] . implode(', ', $js) . $brackets[1];
+ }
+
}
projects / civicrm-core.git / blobdiff