json.php

zapatec suite 最新版 20070204,非常棒的ajax widgets 工具包

								$vars = get_object_vars($var);

								$properties = array_map(array($this, 'name_value'),
																				array_keys($vars),
																				array_values($vars));
						
								foreach($properties as $property)
										if(Services_JSON::isError($property))
												return $property;
								
								return '{' . join(',', $properties) . '}';

						default:
								return ($this->use & SERVICES_JSON_SUPPRESS_ERRORS)
										? 'null'
										: new Services_JSON_Error(gettype($var)." can not be encoded as JSON string");
				}
		}
		
	 /**
		* array-walking function for use in generating JSON-formatted name-value pairs
		*
		* @param    string  $name   name of key to use
		* @param    mixed   $value  reference to an array element to be encoded
		*
		* @return   string  JSON-formatted name-value pair, like '"name":value'
		* @access   private
		*/
		function name_value($name, $value)
		{
				$encoded_value = $this->encode($value);
				
				if(Services_JSON::isError($encoded_value))
						return $encoded_value;
		
				return $this->encode(strval($name)) . ':' . $encoded_value;
		}        

	 /**
		* reduce a string by removing leading and trailing comments and whitespace
		*
		* @param    $str    string      string value to strip of comments and whitespace
		*
		* @return   string  string value stripped of comments and whitespace
		* @access   private
		*/
		function reduce_string($str)
		{
				$str = preg_replace(array(
				
								// eliminate single line comments in '// ...' form
								'#^\s*//(.+)$#m',
		
								// eliminate multi-line comments in '/* ... */' form, at start of string
								'#^\s*/\*(.+)\*/#Us',
		
								// eliminate multi-line comments in '/* ... */' form, at end of string
								'#/\*(.+)\*/\s*$#Us'
		
						), '', $str);
				
				// eliminate extraneous space
				return trim($str);
		}

	 /**
		* decodes a JSON string into appropriate variable
		*
		* @param    string  $str    JSON-formatted string
		*
		* @return   mixed   number, boolean, string, array, or object
		*                   corresponding to given JSON input string.
		*                   See argument 1 to Services_JSON() above for object-output behavior.
		*                   Note that decode() always returns strings
		*                   in ASCII or UTF-8 format!
		* @access   public
		*/
		function decode($str)
		{
				$str = $this->reduce_string($str);
		
				switch (strtolower($str)) {
						case 'true':
								return true;

						case 'false':
								return false;
						
						case 'null':
								return null;
						
						default:
								if (is_numeric($str)) {
										// Lookie-loo, it's a number

										// This would work on its own, but I'm trying to be
										// good about returning integers where appropriate:
										// return (float)$str;

										// Return float or int, as appropriate
										return ((float)$str == (integer)$str)
												? (integer)$str
												: (float)$str;
										
								} elseif (preg_match('/^("|\').*(\1)$/s', $str, $m) && $m[1] == $m[2]) {
										// STRINGS RETURNED IN UTF-8 FORMAT
										$delim = substr($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':
																$utf8 .= chr(0x08);
																++$c;
																break;
														case $substr_chrs_c_2 == '\t':
																$utf8 .= chr(0x09);
																++$c;
																break;
														case $substr_chrs_c_2 == '\n':
																$utf8 .= chr(0x0A);
																++$c;
																break;
														case $substr_chrs_c_2 == '\f':
																$utf8 .= chr(0x0C);
																++$c;
																break;
														case $substr_chrs_c_2 == '\r':
																$utf8 .= chr(0x0D);
																++$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
																//see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
																$utf8 .= substr($chrs, $c, 2);
																++$c;
																break;
		
														case ($ord_chrs_c & 0xF0) == 0xE0:
																// characters U-00000800 - U-0000FFFF, mask 1110XXXX
																// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
																$utf8 .= substr($chrs, $c, 3);
																$c += 2;
																break;
		
														case ($ord_chrs_c & 0xF8) == 0xF0:
																// characters U-00010000 - U-001FFFFF, mask 11110XXX
																// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
																$utf8 .= substr($chrs, $c, 4);
																$c += 3;
																break;
		
														case ($ord_chrs_c & 0xFC) == 0xF8:
																// characters U-00200000 - U-03FFFFFF, mask 111110XX
																// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
																$utf8 .= substr($chrs, $c, 5);
																$c += 4;
																break;
		
														case ($ord_chrs_c & 0xFE) == 0xFC:
																// characters U-04000000 - U-7FFFFFFF, mask 1111110X
																// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
																$utf8 .= substr($chrs, $c, 6);
																$c += 5;
																break;

												}

										}
										
										return $utf8;
								
								} elseif (preg_match('/^\[.*\]$/s', $str) || preg_match('/^\{.*\}$/s', $str)) {
										// array, or object notation

										if ($str{0} == '[') {
												$stk = array(SERVICES_JSON_IN_ARR);
												$arr = array();
										} else {
												if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
														$stk = array(SERVICES_JSON_IN_OBJ);
														$obj = array();
												} else {
														$stk = array(SERVICES_JSON_IN_OBJ);
														$obj = new stdClass();
												}
										}
										
										array_push($stk, array('what'  => SERVICES_JSON_SLICE,
																					 'where' => 0,
																					 'delim' => false));

										$chrs = substr($str, 1, -1);
										$chrs = $this->reduce_string($chrs);
										
										if ($chrs == '') {
												if (reset($stk) == SERVICES_JSON_IN_ARR) {
														return $arr;

												} else {
														return $obj;

												}
										}

										//print("\nparsing {$chrs}\n");
										
										$strlen_chrs = strlen($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'] == SERVICES_JSON_SLICE))) {
														// found a comma that is not inside a string, array, etc.,
														// OR we've reached the end of the character list
														$slice = substr($chrs, $top['where'], ($c - $top['where']));
														array_push($stk, array('what' => SERVICES_JSON_SLICE, 'where' => ($c + 1), 'delim' => false));
														//print("Found split at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");

														if (reset($stk) == SERVICES_JSON_IN_ARR) {
																// we are in an array, so just push an element onto the stack
																array_push($arr, $this->decode($slice));

														} elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
																// we are in an object, so figure
																// out the property name and set an
																// element in an associative array,
																// for now
																if (preg_match('/^\s*(["\'].*[^\\\]["\'])\s*:\s*(\S.*),?$/Uis', $slice, $parts)) {
																		// "name":value pair
																		$key = $this->decode($parts[1]);
																		$val = $this->decode($parts[2]);

																		if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
																				$obj[$key] = $val;
																		} else {
																				$obj->$key = $val;
																		}
																} elseif (preg_match('/^\s*(\w+)\s*:\s*(\S.*),?$/Uis', $slice, $parts)) {
																		// name:value pair, where name is unquoted
																		$key = $parts[1];
																		$val = $this->decode($parts[2]);

																		if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
																				$obj[$key] = $val;
																		} else {
																				$obj->$key = $val;
																		}
																}

														}

												} elseif ((($chrs{$c} == '"') || ($chrs{$c} == "'")) && ($top['what'] != SERVICES_JSON_IN_STR)) {
														// found a quote, and we are not inside a string
														array_push($stk, array('what' => SERVICES_JSON_IN_STR, 'where' => $c, 'delim' => $chrs{$c}));
														//print("Found start of string at {$c}\n");

												} elseif (($chrs{$c} == $top['delim']) &&
																 ($top['what'] == SERVICES_JSON_IN_STR) &&
																 (($chrs{$c - 1} != '\\') ||
																 ($chrs{$c - 1} == '\\' && $chrs{$c - 2} == '\\'))) {
														// found a quote, we're in a string, and it's not escaped
														array_pop($stk);
														//print("Found end of string at {$c}: ".substr($chrs, $top['where'], (1 + 1 + $c - $top['where']))."\n");

												} elseif (($chrs{$c} == '[') &&
																 in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
														// found a left-bracket, and we are in an array, object, or slice
														array_push($stk, array('what' => SERVICES_JSON_IN_ARR, 'where' => $c, 'delim' => false));
														//print("Found start of array at {$c}\n");

												} elseif (($chrs{$c} == ']') && ($top['what'] == SERVICES_JSON_IN_ARR)) {
														// found a right-bracket, and we're in an array
														array_pop($stk);
														//print("Found end of array at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");

												} elseif (($chrs{$c} == '{') &&
																 in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
														// found a left-brace, and we are in an array, object, or slice
														array_push($stk, array('what' => SERVICES_JSON_IN_OBJ, 'where' => $c, 'delim' => false));
														//print("Found start of object at {$c}\n");

												} elseif (($chrs{$c} == '}') && ($top['what'] == SERVICES_JSON_IN_OBJ)) {
														// found a right-brace, and we're in an object
														array_pop($stk);
														//print("Found end of object at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");

												} elseif (($substr_chrs_c_2 == '/*') &&
																 in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
														// found a comment start, and we are in an array, object, or slice
														array_push($stk, array('what' => SERVICES_JSON_IN_CMT, 'where' => $c, 'delim' => false));
														$c++;
														//print("Found start of comment at {$c}\n");

												} elseif (($substr_chrs_c_2 == '*/') && ($top['what'] == SERVICES_JSON_IN_CMT)) {
														// found a comment end, and we're in one now
														array_pop($stk);
														$c++;
														
														for ($i = $top['where']; $i <= $c; ++$i)
																$chrs = substr_replace($chrs, ' ', $i, 1);
														
														//print("Found end of comment at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");

												}
										
										}
										
										if (reset($stk) == SERVICES_JSON_IN_ARR) {
												return $arr;

										} elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
												return $obj;

										}
								
								}
				}
		}
		
		/**
		 * @todo Ultimately, this should just call PEAR::isError()
		 */
		function isError($data, $code = null)
		{
				if (class_exists('pear')) {
						return PEAR::isError($data, $code);
				} elseif (is_object($data) && (get_class($data) == 'services_json_error' ||
																 is_subclass_of($data, 'services_json_error'))) {
						return true;
				}

				return false;
		}
}

if (class_exists('pear_error')) {

		class Services_JSON_Error extends PEAR_Error
		{
				function Services_JSON_Error($message = 'unknown error', $code = null,
																		 $mode = null, $options = null, $userinfo = null)
				{
						parent::PEAR_Error($message, $code, $mode, $options, $userinfo);
				}
		}

} else {

		/**
		 * @todo Ultimately, this class shall be descended from PEAR_Error
		 */
		class Services_JSON_Error
		{
				function Services_JSON_Error($message = 'unknown error', $code = null,
																		 $mode = null, $options = null, $userinfo = null)
				{
				
				}
		}

}
		
?>