596 lines
12 KiB
PHP
596 lines
12 KiB
PHP
<?php
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/**
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* $Id: JSON.php 40 2007-06-18 11:43:15Z spocke $
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*
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* @package MCManager.utils
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* @author Moxiecode
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* @copyright Copyright © 2007, Moxiecode Systems AB, All rights reserved.
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*/
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define('JSON_BOOL', 1);
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define('JSON_INT', 2);
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define('JSON_STR', 3);
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define('JSON_FLOAT', 4);
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define('JSON_NULL', 5);
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define('JSON_START_OBJ', 6);
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define('JSON_END_OBJ', 7);
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define('JSON_START_ARRAY', 8);
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define('JSON_END_ARRAY', 9);
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define('JSON_KEY', 10);
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define('JSON_SKIP', 11);
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define('JSON_IN_ARRAY', 30);
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define('JSON_IN_OBJECT', 40);
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define('JSON_IN_BETWEEN', 50);
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class Moxiecode_JSONReader {
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var $_data, $_len, $_pos;
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var $_value, $_token;
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var $_location, $_lastLocations;
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var $_needProp;
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function Moxiecode_JSONReader($data) {
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$this->_data = $data;
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$this->_len = strlen($data);
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$this->_pos = -1;
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$this->_location = JSON_IN_BETWEEN;
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$this->_lastLocations = array();
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$this->_needProp = false;
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}
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function getToken() {
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return $this->_token;
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}
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function getLocation() {
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return $this->_location;
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}
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function getTokenName() {
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switch ($this->_token) {
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case JSON_BOOL:
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return 'JSON_BOOL';
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case JSON_INT:
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return 'JSON_INT';
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case JSON_STR:
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return 'JSON_STR';
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case JSON_FLOAT:
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return 'JSON_FLOAT';
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case JSON_NULL:
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return 'JSON_NULL';
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case JSON_START_OBJ:
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return 'JSON_START_OBJ';
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case JSON_END_OBJ:
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return 'JSON_END_OBJ';
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case JSON_START_ARRAY:
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return 'JSON_START_ARRAY';
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case JSON_END_ARRAY:
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return 'JSON_END_ARRAY';
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case JSON_KEY:
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return 'JSON_KEY';
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}
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return 'UNKNOWN';
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}
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function getValue() {
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return $this->_value;
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}
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function readToken() {
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$chr = $this->read();
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if ($chr != null) {
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switch ($chr) {
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case '[':
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$this->_lastLocation[] = $this->_location;
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$this->_location = JSON_IN_ARRAY;
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$this->_token = JSON_START_ARRAY;
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$this->_value = null;
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$this->readAway();
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return true;
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case ']':
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$this->_location = array_pop($this->_lastLocation);
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$this->_token = JSON_END_ARRAY;
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$this->_value = null;
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$this->readAway();
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if ($this->_location == JSON_IN_OBJECT)
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$this->_needProp = true;
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return true;
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case '{':
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$this->_lastLocation[] = $this->_location;
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$this->_location = JSON_IN_OBJECT;
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$this->_needProp = true;
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$this->_token = JSON_START_OBJ;
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$this->_value = null;
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$this->readAway();
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return true;
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case '}':
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$this->_location = array_pop($this->_lastLocation);
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$this->_token = JSON_END_OBJ;
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$this->_value = null;
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$this->readAway();
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if ($this->_location == JSON_IN_OBJECT)
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$this->_needProp = true;
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return true;
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// String
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case '"':
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case '\'':
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return $this->_readString($chr);
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// Null
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case 'n':
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return $this->_readNull();
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// Bool
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case 't':
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case 'f':
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return $this->_readBool($chr);
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default:
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// Is number
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if (is_numeric($chr) || $chr == '-' || $chr == '.')
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return $this->_readNumber($chr);
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return true;
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}
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}
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return false;
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}
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function _readBool($chr) {
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$this->_token = JSON_BOOL;
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$this->_value = $chr == 't';
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if ($chr == 't')
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$this->skip(3); // rue
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else
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$this->skip(4); // alse
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$this->readAway();
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if ($this->_location == JSON_IN_OBJECT && !$this->_needProp)
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$this->_needProp = true;
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return true;
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}
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function _readNull() {
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$this->_token = JSON_NULL;
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$this->_value = null;
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$this->skip(3); // ull
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$this->readAway();
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if ($this->_location == JSON_IN_OBJECT && !$this->_needProp)
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$this->_needProp = true;
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return true;
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}
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function _readString($quote) {
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$output = "";
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$this->_token = JSON_STR;
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$endString = false;
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while (($chr = $this->peek()) != -1) {
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switch ($chr) {
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case '\\':
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// Read away slash
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$this->read();
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// Read escape code
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$chr = $this->read();
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switch ($chr) {
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case 't':
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$output .= "\t";
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break;
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case 'b':
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$output .= "\b";
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break;
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case 'f':
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$output .= "\f";
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break;
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case 'r':
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$output .= "\r";
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break;
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case 'n':
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$output .= "\n";
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break;
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case 'u':
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$output .= $this->_int2utf8(hexdec($this->read(4)));
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break;
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default:
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$output .= $chr;
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break;
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}
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break;
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case '\'':
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case '"':
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if ($chr == $quote)
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$endString = true;
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$chr = $this->read();
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if ($chr != -1 && $chr != $quote)
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$output .= $chr;
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break;
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default:
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$output .= $this->read();
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}
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// String terminated
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if ($endString)
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break;
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}
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$this->readAway();
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$this->_value = $output;
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// Needed a property
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if ($this->_needProp) {
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$this->_token = JSON_KEY;
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$this->_needProp = false;
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return true;
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}
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if ($this->_location == JSON_IN_OBJECT && !$this->_needProp)
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$this->_needProp = true;
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return true;
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}
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function _int2utf8($int) {
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$int = intval($int);
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switch ($int) {
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case 0:
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return chr(0);
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case ($int & 0x7F):
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return chr($int);
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case ($int & 0x7FF):
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return chr(0xC0 | (($int >> 6) & 0x1F)) . chr(0x80 | ($int & 0x3F));
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case ($int & 0xFFFF):
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return chr(0xE0 | (($int >> 12) & 0x0F)) . chr(0x80 | (($int >> 6) & 0x3F)) . chr (0x80 | ($int & 0x3F));
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case ($int & 0x1FFFFF):
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return chr(0xF0 | ($int >> 18)) . chr(0x80 | (($int >> 12) & 0x3F)) . chr(0x80 | (($int >> 6) & 0x3F)) . chr(0x80 | ($int & 0x3F));
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}
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}
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function _readNumber($start) {
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$value = "";
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$isFloat = false;
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$this->_token = JSON_INT;
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$value .= $start;
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while (($chr = $this->peek()) != -1) {
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if (is_numeric($chr) || $chr == '-' || $chr == '.') {
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if ($chr == '.')
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$isFloat = true;
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$value .= $this->read();
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} else
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break;
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}
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$this->readAway();
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if ($isFloat) {
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$this->_token = JSON_FLOAT;
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$this->_value = floatval($value);
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} else
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$this->_value = intval($value);
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if ($this->_location == JSON_IN_OBJECT && !$this->_needProp)
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$this->_needProp = true;
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return true;
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}
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function readAway() {
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while (($chr = $this->peek()) != null) {
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if ($chr != ':' && $chr != ',' && $chr != ' ')
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return;
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$this->read();
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}
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}
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function read($len = 1) {
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if ($this->_pos < $this->_len) {
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if ($len > 1) {
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$str = substr($this->_data, $this->_pos + 1, $len);
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$this->_pos += $len;
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return $str;
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} else
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return $this->_data[++$this->_pos];
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}
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return null;
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}
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function skip($len) {
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$this->_pos += $len;
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}
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function peek() {
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if ($this->_pos < $this->_len)
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return $this->_data[$this->_pos + 1];
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return null;
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}
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}
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/**
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* This class handles JSON stuff.
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*
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* @package MCManager.utils
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*/
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class Moxiecode_JSON {
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function Moxiecode_JSON() {
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}
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function decode($input) {
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$reader = new Moxiecode_JSONReader($input);
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return $this->readValue($reader);
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}
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function readValue(&$reader) {
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$this->data = array();
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$this->parents = array();
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$this->cur =& $this->data;
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$key = null;
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$loc = JSON_IN_ARRAY;
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while ($reader->readToken()) {
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switch ($reader->getToken()) {
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case JSON_STR:
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case JSON_INT:
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case JSON_BOOL:
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case JSON_FLOAT:
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case JSON_NULL:
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switch ($reader->getLocation()) {
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case JSON_IN_OBJECT:
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$this->cur[$key] = $reader->getValue();
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break;
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case JSON_IN_ARRAY:
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$this->cur[] = $reader->getValue();
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break;
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default:
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return $reader->getValue();
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}
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break;
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case JSON_KEY:
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$key = $reader->getValue();
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break;
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case JSON_START_OBJ:
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case JSON_START_ARRAY:
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if ($loc == JSON_IN_OBJECT)
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$this->addArray($key);
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else
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$this->addArray(null);
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$cur =& $obj;
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$loc = $reader->getLocation();
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break;
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case JSON_END_OBJ:
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case JSON_END_ARRAY:
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$loc = $reader->getLocation();
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if (count($this->parents) > 0) {
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$this->cur =& $this->parents[count($this->parents) - 1];
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array_pop($this->parents);
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}
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break;
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}
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}
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return $this->data[0];
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}
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// This method was needed since PHP is crapy and doesn't have pointers/references
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function addArray($key) {
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$this->parents[] =& $this->cur;
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$ar = array();
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if ($key)
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$this->cur[$key] =& $ar;
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else
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$this->cur[] =& $ar;
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$this->cur =& $ar;
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}
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function getDelim($index, &$reader) {
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switch ($reader->getLocation()) {
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case JSON_IN_ARRAY:
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case JSON_IN_OBJECT:
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if ($index > 0)
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return ",";
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break;
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}
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return "";
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}
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function encode($input) {
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switch (gettype($input)) {
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case 'boolean':
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return $input ? 'true' : 'false';
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case 'integer':
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return (int) $input;
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case 'float':
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case 'double':
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return (float) $input;
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case 'NULL':
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return 'null';
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case 'string':
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return $this->encodeString($input);
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case 'array':
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return $this->_encodeArray($input);
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case 'object':
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return $this->_encodeArray(get_object_vars($input));
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}
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return '';
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}
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function encodeString($input) {
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// Needs to be escaped
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if (preg_match('/[^a-zA-Z0-9]/', $input)) {
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$output = '';
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for ($i=0; $i<strlen($input); $i++) {
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switch ($input[$i]) {
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case "\b":
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$output .= "\\b";
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break;
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case "\t":
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$output .= "\\t";
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break;
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case "\f":
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$output .= "\\f";
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break;
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case "\r":
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$output .= "\\r";
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break;
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case "\n":
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$output .= "\\n";
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break;
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case '\\':
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$output .= "\\\\";
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break;
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case '\'':
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$output .= "\\'";
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break;
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case '"':
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$output .= '\"';
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break;
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default:
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$byte = ord($input[$i]);
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if (($byte & 0xE0) == 0xC0) {
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$char = pack('C*', $byte, ord($input[$i + 1]));
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$i += 1;
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$output .= sprintf('\u%04s', bin2hex($this->_utf82utf16($char)));
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} if (($byte & 0xF0) == 0xE0) {
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$char = pack('C*', $byte, ord($input[$i + 1]), ord($input[$i + 2]));
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$i += 2;
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$output .= sprintf('\u%04s', bin2hex($this->_utf82utf16($char)));
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} if (($byte & 0xF8) == 0xF0) {
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$char = pack('C*', $byte, ord($input[$i + 1]), ord($input[$i + 2]), ord($input[$i + 3]));
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$i += 3;
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$output .= sprintf('\u%04s', bin2hex($this->_utf82utf16($char)));
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} if (($byte & 0xFC) == 0xF8) {
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$char = pack('C*', $byte, ord($input[$i + 1]), ord($input[$i + 2]), ord($input[$i + 3]), ord($input[$i + 4]));
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$i += 4;
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$output .= sprintf('\u%04s', bin2hex($this->_utf82utf16($char)));
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} if (($byte & 0xFE) == 0xFC) {
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$char = pack('C*', $byte, ord($input[$i + 1]), ord($input[$i + 2]), ord($input[$i + 3]), ord($input[$i + 4]), ord($input[$i + 5]));
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$i += 5;
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$output .= sprintf('\u%04s', bin2hex($this->_utf82utf16($char)));
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} else if ($byte < 128)
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$output .= $input[$i];
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}
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}
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return '"' . $output . '"';
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}
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return '"' . $input . '"';
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}
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function _utf82utf16($utf8) {
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if (function_exists('mb_convert_encoding'))
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return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8');
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switch (strlen($utf8)) {
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case 1:
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return $utf8;
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case 2:
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return chr(0x07 & (ord($utf8[0]) >> 2)) . chr((0xC0 & (ord($utf8[0]) << 6)) | (0x3F & ord($utf8[1])));
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case 3:
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return chr((0xF0 & (ord($utf8[0]) << 4)) | (0x0F & (ord($utf8[1]) >> 2))) . chr((0xC0 & (ord($utf8[1]) << 6)) | (0x7F & ord($utf8[2])));
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}
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return '';
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}
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function _encodeArray($input) {
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$output = '';
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$isIndexed = true;
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$keys = array_keys($input);
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for ($i=0; $i<count($keys); $i++) {
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if (!is_int($keys[$i])) {
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$output .= $this->encodeString($keys[$i]) . ':' . $this->encode($input[$keys[$i]]);
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$isIndexed = false;
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} else
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$output .= $this->encode($input[$keys[$i]]);
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if ($i != count($keys) - 1)
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$output .= ',';
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}
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return $isIndexed ? '[' . $output . ']' : '{' . $output . '}';
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}
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}
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?>
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