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Diffstat (limited to '')
-rw-r--r-- | library/vendor/Zend/Json/Encoder.php | 576 |
1 files changed, 576 insertions, 0 deletions
diff --git a/library/vendor/Zend/Json/Encoder.php b/library/vendor/Zend/Json/Encoder.php new file mode 100644 index 0000000..57acb35 --- /dev/null +++ b/library/vendor/Zend/Json/Encoder.php @@ -0,0 +1,576 @@ +<?php +/** + * Zend Framework + * + * LICENSE + * + * This source file is subject to the new BSD license that is bundled + * with this package in the file LICENSE.txt. + * It is also available through the world-wide-web at this URL: + * http://framework.zend.com/license/new-bsd + * If you did not receive a copy of the license and are unable to + * obtain it through the world-wide-web, please send an email + * to license@zend.com so we can send you a copy immediately. + * + * @category Zend + * @package Zend_Json + * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com) + * @license http://framework.zend.com/license/new-bsd New BSD License + * @version $Id$ + */ + +/** + * Encode PHP constructs to JSON + * + * @category Zend + * @package Zend_Json + * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com) + * @license http://framework.zend.com/license/new-bsd New BSD License + */ +class Zend_Json_Encoder +{ + /** + * Whether or not to check for possible cycling + * + * @var boolean + */ + protected $_cycleCheck; + + /** + * Additional options used during encoding + * + * @var array + */ + protected $_options = array(); + + /** + * Array of visited objects; used to prevent cycling. + * + * @var array + */ + protected $_visited = array(); + + /** + * Constructor + * + * @param boolean $cycleCheck Whether or not to check for recursion when encoding + * @param array $options Additional options used during encoding + * @return void + */ + protected function __construct($cycleCheck = false, $options = array()) + { + $this->_cycleCheck = $cycleCheck; + $this->_options = $options; + } + + /** + * Use the JSON encoding scheme for the value specified + * + * @param mixed $value The value to be encoded + * @param boolean $cycleCheck Whether or not to check for possible object recursion when encoding + * @param array $options Additional options used during encoding + * @return string The encoded value + */ + public static function encode($value, $cycleCheck = false, $options = array()) + { + $encoder = new self(($cycleCheck) ? true : false, $options); + return $encoder->_encodeValue($value); + } + + /** + * Recursive driver which determines the type of value to be encoded + * and then dispatches to the appropriate method. $values are either + * - objects (returns from {@link _encodeObject()}) + * - arrays (returns from {@link _encodeArray()}) + * - basic datums (e.g. numbers or strings) (returns from {@link _encodeDatum()}) + * + * @param mixed $value The value to be encoded + * @return string Encoded value + */ + protected function _encodeValue(&$value) + { + if (is_object($value)) { + return $this->_encodeObject($value); + } else if (is_array($value)) { + return $this->_encodeArray($value); + } + + return $this->_encodeDatum($value); + } + + + + /** + * Encode an object to JSON by encoding each of the public properties + * + * A special property is added to the JSON object called '__className' + * that contains the name of the class of $value. This is used to decode + * the object on the client into a specific class. + * + * @param object $value + * @return string + * @throws Zend_Json_Exception If recursive checks are enabled and the object has been serialized previously + */ + protected function _encodeObject(&$value) + { + if ($this->_cycleCheck) { + if ($this->_wasVisited($value)) { + + if (isset($this->_options['silenceCyclicalExceptions']) + && $this->_options['silenceCyclicalExceptions']===true) { + + return '"* RECURSION (' . get_class($value) . ') *"'; + + } else { + throw new Zend_Json_Exception( + 'Cycles not supported in JSON encoding, cycle introduced by ' + . 'class "' . get_class($value) . '"' + ); + } + } + + $this->_visited[] = $value; + } + + $props = ''; + if (method_exists($value, 'toJson')) { + $props =',' . preg_replace("/^\{(.*)\}$/","\\1",$value->toJson()); + } else { + if ($value instanceof IteratorAggregate) { + $propCollection = $value->getIterator(); + } elseif ($value instanceof Iterator) { + $propCollection = $value; + } else { + $propCollection = get_object_vars($value); + } + + foreach ($propCollection as $name => $propValue) { + if (isset($propValue)) { + $props .= ',' + . $this->_encodeString($name) + . ':' + . $this->_encodeValue($propValue); + } + } + } + $className = get_class($value); + return '{"__className":' . $this->_encodeString($className) + . $props . '}'; + } + + + /** + * Determine if an object has been serialized already + * + * @param mixed $value + * @return boolean + */ + protected function _wasVisited(&$value) + { + if (in_array($value, $this->_visited, true)) { + return true; + } + + return false; + } + + + /** + * JSON encode an array value + * + * Recursively encodes each value of an array and returns a JSON encoded + * array string. + * + * Arrays are defined as integer-indexed arrays starting at index 0, where + * the last index is (count($array) -1); any deviation from that is + * considered an associative array, and will be encoded as such. + * + * @param array& $array + * @return string + */ + protected function _encodeArray(&$array) + { + $tmpArray = array(); + + // Check for associative array + if (!empty($array) && (array_keys($array) !== range(0, count($array) - 1))) { + // Associative array + $result = '{'; + foreach ($array as $key => $value) { + $key = (string) $key; + $tmpArray[] = $this->_encodeString($key) + . ':' + . $this->_encodeValue($value); + } + $result .= implode(',', $tmpArray); + $result .= '}'; + } else { + // Indexed array + $result = '['; + $length = count($array); + for ($i = 0; $i < $length; $i++) { + $tmpArray[] = $this->_encodeValue($array[$i]); + } + $result .= implode(',', $tmpArray); + $result .= ']'; + } + + return $result; + } + + + /** + * JSON encode a basic data type (string, number, boolean, null) + * + * If value type is not a string, number, boolean, or null, the string + * 'null' is returned. + * + * @param mixed& $value + * @return string + */ + protected function _encodeDatum(&$value) + { + $result = 'null'; + + if (is_int($value) || is_float($value)) { + $result = (string) $value; + $result = str_replace(",", ".", $result); + } elseif (is_string($value)) { + $result = $this->_encodeString($value); + } elseif (is_bool($value)) { + $result = $value ? 'true' : 'false'; + } + + return $result; + } + + + /** + * JSON encode a string value by escaping characters as necessary + * + * @param string& $value + * @return string + */ + protected function _encodeString(&$string) + { + // Escape these characters with a backslash: + // " \ / \n \r \t \b \f + $search = array('\\', "\n", "\t", "\r", "\b", "\f", '"', '/'); + $replace = array('\\\\', '\\n', '\\t', '\\r', '\\b', '\\f', '\"', '\\/'); + $string = str_replace($search, $replace, $string); + + // Escape certain ASCII characters: + // 0x08 => \b + // 0x0c => \f + $string = str_replace(array(chr(0x08), chr(0x0C)), array('\b', '\f'), $string); + $string = self::encodeUnicodeString($string); + + return '"' . $string . '"'; + } + + + /** + * Encode the constants associated with the ReflectionClass + * parameter. The encoding format is based on the class2 format + * + * @param ReflectionClass $cls + * @return string Encoded constant block in class2 format + */ + private static function _encodeConstants(ReflectionClass $cls) + { + $result = "constants : {"; + $constants = $cls->getConstants(); + + $tmpArray = array(); + if (!empty($constants)) { + foreach ($constants as $key => $value) { + $tmpArray[] = "$key: " . self::encode($value); + } + + $result .= implode(', ', $tmpArray); + } + + return $result . "}"; + } + + + /** + * Encode the public methods of the ReflectionClass in the + * class2 format + * + * @param ReflectionClass $cls + * @return string Encoded method fragment + * + */ + private static function _encodeMethods(ReflectionClass $cls) + { + $methods = $cls->getMethods(); + $result = 'methods:{'; + + $started = false; + foreach ($methods as $method) { + if (! $method->isPublic() || !$method->isUserDefined()) { + continue; + } + + if ($started) { + $result .= ','; + } + $started = true; + + $result .= '' . $method->getName(). ':function('; + + if ('__construct' != $method->getName()) { + $parameters = $method->getParameters(); + $paramCount = count($parameters); + $argsStarted = false; + + $argNames = "var argNames=["; + foreach ($parameters as $param) { + if ($argsStarted) { + $result .= ','; + } + + $result .= $param->getName(); + + if ($argsStarted) { + $argNames .= ','; + } + + $argNames .= '"' . $param->getName() . '"'; + + $argsStarted = true; + } + $argNames .= "];"; + + $result .= "){" + . $argNames + . 'var result = ZAjaxEngine.invokeRemoteMethod(' + . "this, '" . $method->getName() + . "',argNames,arguments);" + . 'return(result);}'; + } else { + $result .= "){}"; + } + } + + return $result . "}"; + } + + + /** + * Encode the public properties of the ReflectionClass in the class2 + * format. + * + * @param ReflectionClass $cls + * @return string Encode properties list + * + */ + private static function _encodeVariables(ReflectionClass $cls) + { + $properties = $cls->getProperties(); + $propValues = get_class_vars($cls->getName()); + $result = "variables:{"; + $cnt = 0; + + $tmpArray = array(); + foreach ($properties as $prop) { + if (! $prop->isPublic()) { + continue; + } + + $tmpArray[] = $prop->getName() + . ':' + . self::encode($propValues[$prop->getName()]); + } + $result .= implode(',', $tmpArray); + + return $result . "}"; + } + + /** + * Encodes the given $className into the class2 model of encoding PHP + * classes into JavaScript class2 classes. + * NOTE: Currently only public methods and variables are proxied onto + * the client machine + * + * @param string $className The name of the class, the class must be + * instantiable using a null constructor + * @param string $package Optional package name appended to JavaScript + * proxy class name + * @return string The class2 (JavaScript) encoding of the class + * @throws Zend_Json_Exception + */ + public static function encodeClass($className, $package = '') + { + $cls = new ReflectionClass($className); + if (! $cls->isInstantiable()) { + throw new Zend_Json_Exception("$className must be instantiable"); + } + + return "Class.create('$package$className',{" + . self::_encodeConstants($cls) ."," + . self::_encodeMethods($cls) ."," + . self::_encodeVariables($cls) .'});'; + } + + + /** + * Encode several classes at once + * + * Returns JSON encoded classes, using {@link encodeClass()}. + * + * @param array $classNames + * @param string $package + * @return string + */ + public static function encodeClasses(array $classNames, $package = '') + { + $result = ''; + foreach ($classNames as $className) { + $result .= self::encodeClass($className, $package); + } + + return $result; + } + + /** + * Encode Unicode Characters to \u0000 ASCII syntax. + * + * This algorithm was originally developed for the + * Solar Framework by Paul M. Jones + * + * @link http://solarphp.com/ + * @link http://svn.solarphp.com/core/trunk/Solar/Json.php + * @param string $value + * @return string + */ + public static function encodeUnicodeString($value) + { + $strlen_var = strlen($value); + $ascii = ""; + + /** + * Iterate over every character in the string, + * escaping with a slash or encoding to UTF-8 where necessary + */ + for($i = 0; $i < $strlen_var; $i++) { + $ord_var_c = ord($value[$i]); + + switch (true) { + case (($ord_var_c >= 0x20) && ($ord_var_c <= 0x7F)): + // characters U-00000000 - U-0000007F (same as ASCII) + $ascii .= $value[$i]; + break; + + case (($ord_var_c & 0xE0) == 0xC0): + // characters U-00000080 - U-000007FF, mask 110XXXXX + // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 + $char = pack('C*', $ord_var_c, ord($value[$i + 1])); + $i += 1; + $utf16 = self::_utf82utf16($char); + $ascii .= sprintf('\u%04s', bin2hex($utf16)); + break; + + case (($ord_var_c & 0xF0) == 0xE0): + // characters U-00000800 - U-0000FFFF, mask 1110XXXX + // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 + $char = pack('C*', $ord_var_c, + ord($value[$i + 1]), + ord($value[$i + 2])); + $i += 2; + $utf16 = self::_utf82utf16($char); + $ascii .= sprintf('\u%04s', bin2hex($utf16)); + break; + + case (($ord_var_c & 0xF8) == 0xF0): + // characters U-00010000 - U-001FFFFF, mask 11110XXX + // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 + $char = pack('C*', $ord_var_c, + ord($value[$i + 1]), + ord($value[$i + 2]), + ord($value[$i + 3])); + $i += 3; + $utf16 = self::_utf82utf16($char); + $ascii .= sprintf('\u%04s', bin2hex($utf16)); + break; + + case (($ord_var_c & 0xFC) == 0xF8): + // characters U-00200000 - U-03FFFFFF, mask 111110XX + // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 + $char = pack('C*', $ord_var_c, + ord($value[$i + 1]), + ord($value[$i + 2]), + ord($value[$i + 3]), + ord($value[$i + 4])); + $i += 4; + $utf16 = self::_utf82utf16($char); + $ascii .= sprintf('\u%04s', bin2hex($utf16)); + break; + + case (($ord_var_c & 0xFE) == 0xFC): + // characters U-04000000 - U-7FFFFFFF, mask 1111110X + // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 + $char = pack('C*', $ord_var_c, + ord($value[$i + 1]), + ord($value[$i + 2]), + ord($value[$i + 3]), + ord($value[$i + 4]), + ord($value[$i + 5])); + $i += 5; + $utf16 = self::_utf82utf16($char); + $ascii .= sprintf('\u%04s', bin2hex($utf16)); + break; + } + } + + return $ascii; + } + + /** + * Convert a string from one UTF-8 char to one UTF-16 char. + * + * Normally should be handled by mb_convert_encoding, but + * provides a slower PHP-only method for installations + * that lack the multibye string extension. + * + * This method is from the Solar Framework by Paul M. Jones + * + * @link http://solarphp.com + * @param string $utf8 UTF-8 character + * @return string UTF-16 character + */ + protected static function _utf82utf16($utf8) + { + // Check for mb extension otherwise do by hand. + if( function_exists('mb_convert_encoding') ) { + return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8'); + } + + switch (strlen($utf8)) { + case 1: + // this case should never be reached, because we are in ASCII range + // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 + return $utf8; + + case 2: + // return a UTF-16 character from a 2-byte UTF-8 char + // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 + return chr(0x07 & (ord($utf8[0]) >> 2)) + . chr((0xC0 & (ord($utf8[0]) << 6)) + | (0x3F & ord($utf8[1]))); + + case 3: + // return a UTF-16 character from a 3-byte UTF-8 char + // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 + return chr((0xF0 & (ord($utf8[0]) << 4)) + | (0x0F & (ord($utf8[1]) >> 2))) + . chr((0xC0 & (ord($utf8[1]) << 6)) + | (0x7F & ord($utf8[2]))); + } + + // ignoring UTF-32 for now, sorry + return ''; + } +} + |