[2375] | 1 | /**
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| 2 | * CPAINT - Cross-Platform Asynchronous INterface Toolkit
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| 3 | *
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| 4 | * http://sf.net/projects/cpaint
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| 5 | *
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| 6 | * released under the terms of the LGPL
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| 7 | * see http://www.fsf.org/licensing/licenses/lgpl.txt for details
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| 8 | *
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| 9 | * @package CPAINT
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| 10 | * @access public
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| 11 | * @copyright Copyright (c) 2005-2006 Paul Sullivan, Dominique Stender - http://sf.net/projects/cpaint
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| 12 | * @author Paul Sullivan <wiley14@gmail.com>
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| 13 | * @author Dominique Stender <dstender@st-webdevelopment.de>
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| 14 | * @author Stephan Tijink <stijink@googlemail.com>
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| 15 | * @version $Id$
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| 16 | */
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| 17 | function cpaint() {
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| 18 | /**
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| 19 | * CPAINT version
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| 20 | *
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| 21 | * @access protected
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| 22 | * @var string version
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| 23 | */
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| 24 | this.version = '2.0.2';
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| 25 |
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| 26 | /**
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| 27 | * configuration options both for this class but also for the cpaint_call() objects.
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| 28 | *
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| 29 | * @access protected
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| 30 | * @var array config
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| 31 | */
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| 32 | var config = new Array();
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| 33 | config['debugging'] = -1;
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| 34 | config['proxy_url'] = '';
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| 35 | config['transfer_mode'] = 'GET';
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| 36 | config['async'] = true;
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| 37 | config['response_type'] = 'OBJECT';
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| 38 | config['persistent_connection'] = false;
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| 39 | config['use_cpaint_api'] = true;
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| 40 |
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| 41 | /**
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| 42 | * maintains the next free index in the stack
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| 43 | *
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| 44 | * @access protected
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| 45 | * @var integer stack_count
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| 46 | */
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| 47 | var stack_count = 0;
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| 48 |
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| 49 | /**
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| 50 | * property returns whether or not the browser is AJAX capable
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| 51 | *
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| 52 | * @access public
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| 53 | * @return boolean
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| 54 | */
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| 55 | this.capable = test_ajax_capability();
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| 56 |
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| 57 | /**
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| 58 | * switches debug mode on/off.
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| 59 | *
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| 60 | * @access public
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| 61 | * @param boolean debug debug flag
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| 62 | * @return void
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| 63 | */
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| 64 | this.set_debug = function() {
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| 65 |
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| 66 | if (typeof arguments[0] == 'boolean') {
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| 67 | if (arguments[0] === true) {
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| 68 | config['debugging'] = 1;
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| 69 |
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| 70 | } else {
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| 71 | config['debugging'] = 0;
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| 72 | }
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| 73 |
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| 74 | } else if (typeof arguments[0] == 'number') {
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| 75 | config['debugging'] = Math.round(arguments[0]);
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| 76 | }
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| 77 | }
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| 78 |
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| 79 | /**
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| 80 | * defines the URL of the proxy script.
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| 81 | *
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| 82 | * @access public
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| 83 | * @param string proxy_url URL of the proxyscript to connect
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| 84 | * @return void
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| 85 | */
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| 86 | this.set_proxy_url = function() {
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| 87 |
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| 88 | if (typeof arguments[0] == 'string') {
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| 89 |
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| 90 | config['proxy_url'] = arguments[0];
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| 91 | }
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| 92 | }
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| 93 |
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| 94 | /**
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| 95 | * sets the transfer_mode (GET|POST).
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| 96 | *
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| 97 | * @access public
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| 98 | * @param string transfer_mode transfer_mode
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| 99 | * @return void
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| 100 | */
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| 101 | this.set_transfer_mode = function() {
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| 102 |
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| 103 | if (arguments[0].toUpperCase() == 'GET'
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| 104 | || arguments[0].toUpperCase() == 'POST') {
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| 105 |
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| 106 | config['transfer_mode'] = arguments[0].toUpperCase();
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| 107 | }
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| 108 | }
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| 109 |
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| 110 | /**
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| 111 | * sets the flag whether or not to use asynchronous calls.
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| 112 | *
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| 113 | * @access public
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| 114 | * @param boolean async syncronization flag
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| 115 | * @return void
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| 116 | */
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| 117 | this.set_async = function() {
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| 118 |
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| 119 | if (typeof arguments[0] == 'boolean') {
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| 120 | config['async'] = arguments[0];
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| 121 | }
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| 122 | }
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| 123 |
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| 124 | /**
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| 125 | * defines the response type.
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| 126 | *
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| 127 | * allowed values are:
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| 128 | * TEXT = raw text response
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| 129 | * XML = raw XMLHttpObject
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| 130 | * OBJECT = parsed JavaScript object structure from XMLHttpObject
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| 131 | *
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| 132 | * the default is OBJECT.
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| 133 | *
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| 134 | * @access public
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| 135 | * @param string response_type response type
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| 136 | * @return void
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| 137 | */
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| 138 | this.set_response_type = function() {
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| 139 |
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| 140 | if (arguments[0].toUpperCase() == 'TEXT'
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| 141 | || arguments[0].toUpperCase() == 'XML'
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| 142 | || arguments[0].toUpperCase() == 'OBJECT'
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| 143 | || arguments[0].toUpperCase() == 'E4X'
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| 144 | || arguments[0].toUpperCase() == 'JSON') {
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| 145 |
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| 146 | config['response_type'] = arguments[0].toUpperCase();
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| 147 | }
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| 148 | }
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| 149 |
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| 150 | /**
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| 151 | * sets the flag whether or not to use a persistent connection.
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| 152 | *
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| 153 | * @access public
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| 154 | * @param boolean persistent_connection persistance flag
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| 155 | * @return void
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| 156 | */
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| 157 | this.set_persistent_connection = function() {
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| 158 |
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| 159 | if (typeof arguments[0] == 'boolean') {
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| 160 | config['persistent_connection'] = arguments[0];
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| 161 | }
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| 162 | }
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| 163 |
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| 164 |
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| 165 | /**
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| 166 | * sets the flag whether or not to use the cpaint api on the backend.
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| 167 | *
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| 168 | * @access public
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| 169 | * @param boolean cpaint_api api_flag
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| 170 | * @return void
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| 171 | */
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| 172 | this.set_use_cpaint_api = function() {
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| 173 | if (typeof arguments[0] == 'boolean') {
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| 174 | config['use_cpaint_api'] = arguments[0];
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| 175 | }
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| 176 | }
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| 177 |
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| 178 | /**
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| 179 | * tests whether one of the necessary implementations
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| 180 | * of the XMLHttpRequest class are available
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| 181 | *
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| 182 | * @access protected
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| 183 | * @return boolean
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| 184 | */
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| 185 | function test_ajax_capability() {
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| 186 | var cpc = new cpaint_call(0, config, this.version);
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| 187 | return cpc.test_ajax_capability();
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| 188 | }
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| 189 |
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| 190 | /**
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| 191 | * takes the arguments supplied and triggers a call to the CPAINT backend
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| 192 | * based on the settings.
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| 193 | *
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| 194 | * upon response cpaint_call.callback() will automatically be called
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| 195 | * to perform post-processing operations.
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| 196 | *
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| 197 | * @access public
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| 198 | * @param string url remote URL to call
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| 199 | * @param string remote_method remote method to call
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| 200 | * @param object client_callback client side callback method to deliver the remote response to. do NOT supply a string!
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| 201 | * @param mixed argN remote parameters from now on
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| 202 | * @return void
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| 203 | */
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| 204 | this.call = function() {
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| 205 | var use_stack = -1;
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| 206 |
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| 207 | if (config['persistent_connection'] == true
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| 208 | && __cpaint_stack[0] != null) {
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| 209 |
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| 210 | switch (__cpaint_stack[0].get_http_state()) {
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| 211 | case -1:
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| 212 | // no XMLHttpObject object has already been instanciated
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| 213 | // create new object and configure it
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| 214 | use_stack = 0;
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| 215 | debug('no XMLHttpObject object to re-use for persistence, creating new one later', 2);
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| 216 | break;
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| 217 |
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| 218 | case 4:
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| 219 | // object is ready for a new request, no need to do anything
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| 220 | use_stack = 0
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| 221 | debug('re-using the persistent connection', 2);
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| 222 | break;
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| 223 |
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| 224 | default:
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| 225 | // connection is currently in use, don't do anything
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| 226 | debug('the persistent connection is in use - skipping this request', 2);
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| 227 | }
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| 228 |
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| 229 | } else if (config['persistent_connection'] == true) {
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| 230 | // persistent connection is active, but no object has been instanciated
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| 231 | use_stack = 0;
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| 232 | __cpaint_stack[use_stack] = new cpaint_call(use_stack, config, this.version);
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| 233 | debug('no cpaint_call object available for re-use, created new one', 2);
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| 234 |
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| 235 | } else {
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| 236 | // no connection persistance
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| 237 | use_stack = stack_count;
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| 238 | __cpaint_stack[use_stack] = new cpaint_call(use_stack, config, this.version);
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| 239 | debug('no cpaint_call object created new one', 2);
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| 240 | }
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| 241 |
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| 242 | // configure cpaint_call if allowed to
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| 243 | if (use_stack != -1) {
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| 244 | __cpaint_stack[use_stack].set_client_callback(arguments[2]);
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| 245 |
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| 246 | // distribute according to proxy use
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| 247 | if (config['proxy_url'] != '') {
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| 248 | __cpaint_stack[use_stack].call_proxy(arguments);
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| 249 |
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| 250 | } else {
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| 251 | __cpaint_stack[use_stack].call_direct(arguments);
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| 252 | }
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| 253 |
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| 254 | // increase stack counter
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| 255 | stack_count++;
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| 256 | debug('stack size: ' + __cpaint_stack.length, 2);
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| 257 | }
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| 258 | }
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| 259 |
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| 260 | /**
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| 261 | * debug method
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| 262 | *
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| 263 | * @access protected
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| 264 | * @param string message the message to debug
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| 265 | * @param integer debug_level debug level at which the message appears
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| 266 | * @return void
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| 267 | */
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| 268 | var debug = function(message, debug_level) {
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| 269 | var prefix = '[CPAINT Debug] ';
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| 270 |
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| 271 | if (debug_level < 1) {
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| 272 | prefix = '[CPAINT Error] ';
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| 273 | }
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| 274 |
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| 275 | if (config['debugging'] >= debug_level) {
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| 276 | alert(prefix + message);
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| 277 | }
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| 278 | }
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| 279 | }
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| 280 |
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| 281 | /**
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| 282 | * internal FIFO stack of cpaint_call() objects.
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| 283 | *
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| 284 | * @access protected
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| 285 | * @var array __cpaint_stack
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| 286 | */
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| 287 | var __cpaint_stack = new Array();
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| 288 |
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| 289 | /**
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| 290 | * local instance of cpaint_transformer
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| 291 | * MSIE is unable to handle static classes... sheesh.
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| 292 | *
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| 293 | * @access public
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| 294 | * @var object __cpaint_transformer
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| 295 | */
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| 296 | var __cpaint_transformer = new cpaint_transformer();
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| 297 |
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| 298 | /**
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| 299 | * transport agent class
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| 300 | *
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| 301 | * creates the request object, takes care of the response, handles the
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| 302 | * client callback. Is configured by the cpaint() object.
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| 303 | *
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| 304 | * @package CPAINT
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| 305 | * @access public
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| 306 | * @copyright Copyright (c) 2005-2006 Paul Sullivan, Dominique Stender - http://sf.net/projects/cpaint
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| 307 | * @author Dominique Stender <dstender@st-webdevelopment.de>
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| 308 | * @author Paul Sullivan <wiley14@gmail.com>
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| 309 | * @param integer stack_id stack Id in cpaint
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| 310 | * @param array config configuration array for this call
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| 311 | * @param string version CPAINT API version
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| 312 | */
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| 313 | function cpaint_call() {
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| 314 | /**
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| 315 | * CPAINT version
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| 316 | *
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| 317 | * @access protected
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| 318 | * @var string version
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| 319 | */
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| 320 | var version = arguments[2];
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| 321 |
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| 322 | /**
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| 323 | * configuration options both for this class objects.
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| 324 | *
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| 325 | * @access protected
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| 326 | * @var array config
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| 327 | */
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| 328 | var config = new Array();
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| 329 | config['debugging'] = arguments[1]['debugging'];
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| 330 | config['proxy_url'] = arguments[1]['proxy_url'];
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| 331 | config['transfer_mode'] = arguments[1]['transfer_mode'];
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| 332 | config['async'] = arguments[1]['async'];
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| 333 | config['response_type'] = arguments[1]['response_type'];
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| 334 | config['persistent_connection'] = arguments[1]['persistent_connection'];
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| 335 | config['use_cpaint_api'] = arguments[1]['use_cpaint_api'];
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| 336 |
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| 337 | /**
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| 338 | * XMLHttpObject used for this request.
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| 339 | *
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| 340 | * @access protected
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| 341 | * @var object httpobj
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| 342 | */
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| 343 | var httpobj = false;
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| 344 |
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| 345 | /**
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| 346 | * client callback function.
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| 347 | *
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| 348 | * @access public
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| 349 | * @var function client_callback
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| 350 | */
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| 351 | var client_callback;
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| 352 |
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| 353 | /**
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| 354 | * stores the stack Id within the cpaint object
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| 355 | *
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| 356 | * @access protected
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| 357 | * @var stack_id
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| 358 | */
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| 359 | var stack_id = arguments[0];
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| 360 |
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| 361 | /**
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| 362 | * sets the client callback function.
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| 363 | *
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| 364 | * @access public
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| 365 | * @param function client_callback the client callback function
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| 366 | * @return void
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| 367 | */
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| 368 | this.set_client_callback = function() {
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| 369 |
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| 370 | if (typeof arguments[0] == 'function') {
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| 371 | client_callback = arguments[0];
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| 372 | }
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| 373 | }
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| 374 |
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| 375 | /**
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| 376 | * returns the ready state of the internal XMLHttpObject
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| 377 | *
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| 378 | * if no such object was set up already, -1 is returned
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| 379 | *
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| 380 | * @access public
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| 381 | * @return integer
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| 382 | */
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| 383 | this.get_http_state = function() {
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| 384 | var return_value = -1;
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| 385 |
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| 386 | if (typeof httpobj == 'object') {
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| 387 | return_value = httpobj.readyState;
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| 388 | }
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| 389 |
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| 390 | return return_value;
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| 391 | }
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| 392 |
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| 393 | /**
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| 394 | * internal method for remote calls to the local server without use of the proxy script.
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| 395 | *
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| 396 | * @access public
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| 397 | * @param array call_arguments array of arguments initially passed to cpaint.call()
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| 398 | * @return void
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| 399 | */
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| 400 | this.call_direct = function(call_arguments) {
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| 401 | var url = call_arguments[0];
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| 402 | var remote_method = call_arguments[1];
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| 403 | var querystring = '';
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| 404 | var i = 0;
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| 405 |
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| 406 | // correct link to self
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| 407 | if (url == 'SELF') {
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| 408 | url = document.location.href;
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| 409 | }
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| 410 |
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| 411 | if (config['use_cpaint_api'] == true) {
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| 412 | // backend uses cpaint api
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| 413 | // pass parameters to remote method
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| 414 | for (i = 3; i < call_arguments.length; i++) {
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| 415 |
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| 416 | if ((typeof call_arguments[i] == 'string'
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| 417 | && call_arguments[i] != ''
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| 418 | && call_arguments[i].search(/^\s+$/g) == -1)
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| 419 | && !isNaN(call_arguments[i])
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| 420 | && isFinite(call_arguments[i])) {
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| 421 | // numerical value, convert it first
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| 422 | querystring += '&cpaint_argument[]=' + encodeURIComponent(JSON.stringify(Number(call_arguments[i])));
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| 423 |
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| 424 | } else {
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| 425 | querystring += '&cpaint_argument[]=' + encodeURIComponent(JSON.stringify(call_arguments[i]));
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| 426 | }
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| 427 | }
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| 428 |
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| 429 | // add response type to querystring
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| 430 | querystring += '&cpaint_response_type=' + config['response_type'];
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| 431 |
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| 432 | // build header
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| 433 | if (config['transfer_mode'] == 'GET') {
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| 434 |
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| 435 | if(url.indexOf('?') != -1) {
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| 436 | url = url + '&cpaint_function=' + remote_method + querystring;
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| 437 |
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| 438 | } else {
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| 439 | url = url + '?cpaint_function=' + remote_method + querystring;
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| 440 | }
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| 441 |
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| 442 | } else {
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| 443 | querystring = 'cpaint_function=' + remote_method + querystring;
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| 444 | }
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| 445 |
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| 446 | } else {
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| 447 | // backend does not use cpaint api
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| 448 | // pass parameters to remote method
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| 449 | for (i = 3; i < call_arguments.length; i++) {
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| 450 |
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| 451 | if (i == 3) {
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| 452 | querystring += encodeURIComponent(call_arguments[i]);
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| 453 |
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| 454 | } else {
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| 455 | querystring += '&' + encodeURIComponent(call_arguments[i]);
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| 456 | }
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| 457 | }
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| 458 |
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| 459 | // build header
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| 460 | if (config['transfer_mode'] == 'GET') {
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| 461 | url = url + querystring;
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| 462 | }
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| 463 | }
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| 464 |
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| 465 | // open connection
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| 466 | get_connection_object();
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| 467 |
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| 468 | // open connection to remote target
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| 469 | debug('opening connection to "' + url + '"', 1);
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| 470 | httpobj.open(config['transfer_mode'], url, config['async']);
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| 471 |
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| 472 | // send "urlencoded" header if necessary (if POST)
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| 473 | if (config['transfer_mode'] == 'POST') {
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| 474 |
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| 475 | try {
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| 476 | httpobj.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
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| 477 |
|
---|
| 478 | } catch (cp_err) {
|
---|
| 479 | debug('POST cannot be completed due to incompatible browser. Use GET as your request method.', 0);
|
---|
| 480 | }
|
---|
| 481 | }
|
---|
| 482 |
|
---|
| 483 | // make ourselves known
|
---|
| 484 | httpobj.setRequestHeader('X-Powered-By', 'CPAINT v' + version + ' :: http://sf.net/projects/cpaint');
|
---|
| 485 |
|
---|
| 486 | // callback handling for asynchronous calls
|
---|
| 487 | httpobj.onreadystatechange = callback;
|
---|
| 488 |
|
---|
| 489 | // send content
|
---|
| 490 | if (config['transfer_mode'] == 'GET') {
|
---|
| 491 | httpobj.send(null);
|
---|
| 492 |
|
---|
| 493 | } else {
|
---|
| 494 | debug('sending query: ' + querystring, 1);
|
---|
| 495 | httpobj.send(querystring);
|
---|
| 496 | }
|
---|
| 497 |
|
---|
| 498 | if (config['async'] == true) {
|
---|
| 499 | // manual callback handling for synchronized calls
|
---|
| 500 | callback();
|
---|
| 501 | }
|
---|
| 502 | }
|
---|
| 503 |
|
---|
| 504 | /**
|
---|
| 505 | * internal method for calls to remote servers through the proxy script.
|
---|
| 506 | *
|
---|
| 507 | * @access public
|
---|
| 508 | * @param array call_arguments array of arguments passed to cpaint.call()
|
---|
| 509 | * @return void
|
---|
| 510 | */
|
---|
| 511 | this.call_proxy = function(call_arguments) {
|
---|
| 512 | var proxyscript = config['proxy_url'];
|
---|
| 513 | var url = call_arguments[0];
|
---|
| 514 | var remote_method = call_arguments[1];
|
---|
| 515 | var querystring = '';
|
---|
| 516 | var i = 0;
|
---|
| 517 |
|
---|
| 518 | var querystring_argument_prefix = 'cpaint_argument[]=';
|
---|
| 519 |
|
---|
| 520 | // pass parameters to remote method
|
---|
| 521 | if (config['use_cpaint_api'] == false) {
|
---|
| 522 | // when not talking to a CPAINT backend, don't prefix arguments
|
---|
| 523 | querystring_argument_prefix = '';
|
---|
| 524 | }
|
---|
| 525 |
|
---|
| 526 | for (i = 3; i < call_arguments.length; i++) {
|
---|
| 527 |
|
---|
| 528 | if (config['use_cpaint_api'] == true) {
|
---|
| 529 |
|
---|
| 530 | if ((typeof call_arguments[i] == 'string'
|
---|
| 531 | && call_arguments[i] != ''
|
---|
| 532 | && call_arguments[i].search(/^\s+$/g) == -1)
|
---|
| 533 | && !isNaN(call_arguments[i])
|
---|
| 534 | && isFinite(call_arguments[i])) {
|
---|
| 535 | // numerical value, convert it first
|
---|
| 536 | querystring += encodeURIComponent(querystring_argument_prefix + JSON.stringify(Number(call_arguments[i])) + '&');
|
---|
| 537 |
|
---|
| 538 | } else {
|
---|
| 539 | querystring += encodeURIComponent(querystring_argument_prefix + JSON.stringify(call_arguments[i]) + '&');
|
---|
| 540 | }
|
---|
| 541 |
|
---|
| 542 | } else {
|
---|
| 543 | // no CPAINT in the backend
|
---|
| 544 | querystring += encodeURIComponent(querystring_argument_prefix + call_arguments[i] + '&');
|
---|
| 545 | }
|
---|
| 546 | }
|
---|
| 547 |
|
---|
| 548 | if (config['use_cpaint_api'] == true) {
|
---|
| 549 | // add remote function name to querystring
|
---|
| 550 | querystring += encodeURIComponent('&cpaint_function=' + remote_method);
|
---|
| 551 |
|
---|
| 552 | // add response type to querystring
|
---|
| 553 | querystring += encodeURIComponent('&cpaint_responsetype=' + config['response_type']);
|
---|
| 554 | }
|
---|
| 555 |
|
---|
| 556 | // build header
|
---|
| 557 | if (config['transfer_mode'] == 'GET') {
|
---|
| 558 | proxyscript += '?cpaint_remote_url=' + encodeURIComponent(url)
|
---|
| 559 | + '&cpaint_remote_query=' + querystring
|
---|
| 560 | + '&cpaint_remote_method=' + config['transfer_mode']
|
---|
| 561 | + '&cpaint_response_type=' + config['response_type'];
|
---|
| 562 |
|
---|
| 563 | } else {
|
---|
| 564 | querystring = 'cpaint_remote_url=' + encodeURIComponent(url)
|
---|
| 565 | + '&cpaint_remote_query=' + querystring
|
---|
| 566 | + '&cpaint_remote_method=' + config['transfer_mode']
|
---|
| 567 | + '&cpaint_response_type=' + config['response_type'];
|
---|
| 568 | }
|
---|
| 569 |
|
---|
| 570 | // open connection
|
---|
| 571 | get_connection_object();
|
---|
| 572 |
|
---|
| 573 | // open connection to remote target
|
---|
| 574 | debug('opening connection to proxy "' + proxyscript + '"', 1);
|
---|
| 575 | httpobj.open(config['transfer_mode'], proxyscript, config['async']);
|
---|
| 576 |
|
---|
| 577 | // send "urlencoded" header if necessary (if POST)
|
---|
| 578 | if (config['transfer_mode'] == 'POST') {
|
---|
| 579 |
|
---|
| 580 | try {
|
---|
| 581 | httpobj.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
|
---|
| 582 |
|
---|
| 583 | } catch (cp_err) {
|
---|
| 584 | debug('POST cannot be completed due to incompatible browser. Use GET as your request method.', 0);
|
---|
| 585 | }
|
---|
| 586 | }
|
---|
| 587 |
|
---|
| 588 | httpobj.setRequestHeader('X-Powered-By', 'CPAINT v' + version);
|
---|
| 589 |
|
---|
| 590 | // callback handling for asynchronous calls
|
---|
| 591 | httpobj.onreadystatechange = callback;
|
---|
| 592 |
|
---|
| 593 | // send content
|
---|
| 594 | if (config['transfer_mode'] == 'GET') {
|
---|
| 595 | httpobj.send(null);
|
---|
| 596 |
|
---|
| 597 | } else {
|
---|
| 598 | debug('sending query: ' + querystring, 1);
|
---|
| 599 | httpobj.send(querystring);
|
---|
| 600 | }
|
---|
| 601 |
|
---|
| 602 | if (config['async'] == false) {
|
---|
| 603 | // manual callback handling for synchronized calls
|
---|
| 604 | callback();
|
---|
| 605 | }
|
---|
| 606 | }
|
---|
| 607 |
|
---|
| 608 | this.test_ajax_capability = function() {
|
---|
| 609 | return get_connection_object();
|
---|
| 610 | }
|
---|
| 611 |
|
---|
| 612 | /**
|
---|
| 613 | * creates a new connection object.
|
---|
| 614 | *
|
---|
| 615 | * @access protected
|
---|
| 616 | * @return boolean
|
---|
| 617 | */
|
---|
| 618 | var get_connection_object = function() {
|
---|
| 619 | var return_value = false;
|
---|
| 620 | var new_connection = false;
|
---|
| 621 |
|
---|
| 622 | // open new connection only if necessary
|
---|
| 623 | if (config['persistent_connection'] == false) {
|
---|
| 624 | // no persistance, create a new object every time
|
---|
| 625 | debug('Using new connection object', 1);
|
---|
| 626 | new_connection = true;
|
---|
| 627 |
|
---|
| 628 | } else {
|
---|
| 629 | // persistent connection object, only open one if no object exists
|
---|
| 630 | debug('Using shared connection object.', 1);
|
---|
| 631 |
|
---|
| 632 | if (typeof httpobj != 'object') {
|
---|
| 633 | debug('Getting new persistent connection object.', 1);
|
---|
| 634 | new_connection = true;
|
---|
| 635 | }
|
---|
| 636 | }
|
---|
| 637 |
|
---|
| 638 | if (new_connection == true) {
|
---|
| 639 | try {
|
---|
| 640 | httpobj = new ActiveXObject('Msxml2.XMLHTTP');
|
---|
| 641 |
|
---|
| 642 | } catch (e) {
|
---|
| 643 |
|
---|
| 644 | try {
|
---|
| 645 | httpobj = new ActiveXObject('Microsoft.XMLHTTP');
|
---|
| 646 |
|
---|
| 647 | } catch (oc) {
|
---|
| 648 | httpobj = null;
|
---|
| 649 | }
|
---|
| 650 | }
|
---|
| 651 |
|
---|
| 652 | if (!httpobj && typeof XMLHttpRequest != 'undefined') {
|
---|
| 653 | httpobj = new XMLHttpRequest();
|
---|
| 654 | }
|
---|
| 655 |
|
---|
| 656 | if (!httpobj) {
|
---|
| 657 | debug('Could not create connection object', 0);
|
---|
| 658 |
|
---|
| 659 | } else {
|
---|
| 660 | return_value = true;
|
---|
| 661 | }
|
---|
| 662 | }
|
---|
| 663 |
|
---|
| 664 | if (httpobj.readyState != 4) {
|
---|
| 665 | httpobj.abort();
|
---|
| 666 | }
|
---|
| 667 |
|
---|
| 668 | return return_value;
|
---|
| 669 | }
|
---|
| 670 |
|
---|
| 671 | /**
|
---|
| 672 | * internal callback function.
|
---|
| 673 | *
|
---|
| 674 | * will perform some consistency checks (response code, NULL value testing)
|
---|
| 675 | * and if response_type = 'OBJECT' it will automatically call
|
---|
| 676 | * cpaint_call.parse_ajax_xml() to have a JavaScript object structure generated.
|
---|
| 677 | *
|
---|
| 678 | * after all that is done the client side callback function will be called
|
---|
| 679 | * with the generated response as single value.
|
---|
| 680 | *
|
---|
| 681 | * @access protected
|
---|
| 682 | * @return void
|
---|
| 683 | */
|
---|
| 684 | var callback = function() {
|
---|
| 685 | var response = null;
|
---|
| 686 |
|
---|
| 687 | if (httpobj.readyState == 4
|
---|
| 688 | && httpobj.status == 200) {
|
---|
| 689 |
|
---|
| 690 | debug(httpobj.responseText, 1);
|
---|
| 691 | debug('using response type ' + config['response_type'], 2);
|
---|
| 692 |
|
---|
| 693 | // fetch correct response
|
---|
| 694 | switch (config['response_type']) {
|
---|
| 695 | case 'XML':
|
---|
| 696 | debug(httpobj.responseXML, 2);
|
---|
| 697 | response = __cpaint_transformer.xml_conversion(httpobj.responseXML);
|
---|
| 698 | break;
|
---|
| 699 |
|
---|
| 700 | case 'OBJECT':
|
---|
| 701 | response = __cpaint_transformer.object_conversion(httpobj.responseXML);
|
---|
| 702 | break;
|
---|
| 703 |
|
---|
| 704 | case 'TEXT':
|
---|
| 705 | response = __cpaint_transformer.text_conversion(httpobj.responseText);
|
---|
| 706 | break;
|
---|
| 707 |
|
---|
| 708 | case 'E4X':
|
---|
| 709 | response = __cpaint_transformer.e4x_conversion(httpobj.responseText);
|
---|
| 710 | break;
|
---|
| 711 |
|
---|
| 712 | case 'JSON':
|
---|
| 713 | response = __cpaint_transformer.json_conversion(httpobj.responseText);
|
---|
| 714 | break;
|
---|
| 715 |
|
---|
| 716 | default:
|
---|
| 717 | debug('invalid response type \'' + response_type + '\'', 0);
|
---|
| 718 | }
|
---|
| 719 |
|
---|
| 720 | // call client side callback
|
---|
| 721 | if (response != null
|
---|
| 722 | && typeof client_callback == 'function') {
|
---|
| 723 | client_callback(response, httpobj.responseText);
|
---|
| 724 | }
|
---|
| 725 |
|
---|
| 726 | // remove ourselves from the stack
|
---|
| 727 | remove_from_stack();
|
---|
| 728 |
|
---|
| 729 | } else if (httpobj.readyState == 4
|
---|
| 730 | && httpobj.status != 200) {
|
---|
| 731 | // HTTP error of some kind
|
---|
| 732 | debug('invalid HTTP response code \'' + Number(httpobj.status) + '\'', 0);
|
---|
| 733 | }
|
---|
| 734 | }
|
---|
| 735 |
|
---|
| 736 | /**
|
---|
| 737 | * removes an entry from the stack
|
---|
| 738 | *
|
---|
| 739 | * @access protected
|
---|
| 740 | * @return void
|
---|
| 741 | */
|
---|
| 742 | var remove_from_stack = function() {
|
---|
| 743 | // remove only if everything is okay and we're not configured as persistent connection
|
---|
| 744 | if (typeof stack_id == 'number'
|
---|
| 745 | && __cpaint_stack[stack_id]
|
---|
| 746 | && config['persistent_connection'] == false) {
|
---|
| 747 |
|
---|
| 748 | __cpaint_stack[stack_id] = null;
|
---|
| 749 | }
|
---|
| 750 | }
|
---|
| 751 |
|
---|
| 752 | /**
|
---|
| 753 | * debug method
|
---|
| 754 | *
|
---|
| 755 | * @access protected
|
---|
| 756 | * @param string message the message to debug
|
---|
| 757 | * @param integer debug_level debug level at which the message appears
|
---|
| 758 | * @return void
|
---|
| 759 | */
|
---|
| 760 | var debug = function(message, debug_level) {
|
---|
| 761 | var prefix = '[CPAINT Debug] ';
|
---|
| 762 |
|
---|
| 763 | if (config['debugging'] < 1) {
|
---|
| 764 | prefix = '[CPAINT Error] ';
|
---|
| 765 | }
|
---|
| 766 |
|
---|
| 767 | if (config['debugging'] >= debug_level) {
|
---|
| 768 | alert(prefix + message);
|
---|
| 769 | }
|
---|
| 770 | }
|
---|
| 771 | }
|
---|
| 772 |
|
---|
| 773 | /**
|
---|
| 774 | * CPAINT transformation object
|
---|
| 775 | *
|
---|
| 776 | * @package CPAINT
|
---|
| 777 | * @access public
|
---|
| 778 | * @copyright Copyright (c) 2005-2006 Paul Sullivan, Dominique Stender - http://sf.net/projects/cpaint
|
---|
| 779 | * @author Paul Sullivan <wiley14@gmail.com>
|
---|
| 780 | * @author Dominique Stender <dstender@st-webdevelopment.de>
|
---|
| 781 | */
|
---|
| 782 | function cpaint_transformer() {
|
---|
| 783 |
|
---|
| 784 | /**
|
---|
| 785 | * will take a XMLHttpObject and generate a JavaScript
|
---|
| 786 | * object structure from it.
|
---|
| 787 | *
|
---|
| 788 | * is internally called by cpaint_call.callback() if necessary.
|
---|
| 789 | * will call cpaint_call.create_object_structure() to create nested object structures.
|
---|
| 790 | *
|
---|
| 791 | * @access public
|
---|
| 792 | * @param object xml_document a XMLHttpObject
|
---|
| 793 | * @return object
|
---|
| 794 | */
|
---|
| 795 | this.object_conversion = function(xml_document) {
|
---|
| 796 | var return_value = new cpaint_result_object();
|
---|
| 797 | var i = 0;
|
---|
| 798 | var firstNodeName = '';
|
---|
| 799 |
|
---|
| 800 | if (typeof xml_document == 'object'
|
---|
| 801 | && xml_document != null) {
|
---|
| 802 |
|
---|
| 803 | // find the first element node - for MSIE the <?xml?> node is the very first...
|
---|
| 804 | for (i = 0; i < xml_document.childNodes.length; i++) {
|
---|
| 805 |
|
---|
| 806 | if (xml_document.childNodes[i].nodeType == 1) {
|
---|
| 807 | firstNodeName = xml_document.childNodes[i].nodeName;
|
---|
| 808 | break;
|
---|
| 809 | }
|
---|
| 810 | }
|
---|
| 811 |
|
---|
| 812 | var ajax_response = xml_document.getElementsByTagName(firstNodeName);
|
---|
| 813 |
|
---|
| 814 | return_value[firstNodeName] = new Array();
|
---|
| 815 |
|
---|
| 816 | for (i = 0; i < ajax_response.length; i++) {
|
---|
| 817 | var tmp_node = create_object_structure(ajax_response[i]);
|
---|
| 818 | tmp_node.id = ajax_response[i].getAttribute('id')
|
---|
| 819 | return_value[firstNodeName].push(tmp_node);
|
---|
| 820 | }
|
---|
| 821 |
|
---|
| 822 | } else {
|
---|
| 823 | debug('received invalid XML response', 0);
|
---|
| 824 | }
|
---|
| 825 |
|
---|
| 826 | return return_value;
|
---|
| 827 | }
|
---|
| 828 |
|
---|
| 829 | /**
|
---|
| 830 | * performs the necessary conversions for the XML response type
|
---|
| 831 | *
|
---|
| 832 | * @access public
|
---|
| 833 | * @param object xml_document a XMLHttpObject
|
---|
| 834 | * @return object
|
---|
| 835 | */
|
---|
| 836 | this.xml_conversion = function(xml_document) {
|
---|
| 837 | return xml_document;
|
---|
| 838 | }
|
---|
| 839 |
|
---|
| 840 | /**
|
---|
| 841 | * performs the necessary conversions for the TEXT response type
|
---|
| 842 | *
|
---|
| 843 | * @access public
|
---|
| 844 | * @param string text the response text
|
---|
| 845 | * @return string
|
---|
| 846 | */
|
---|
| 847 | this.text_conversion = function(text) {
|
---|
| 848 | return decode(text);
|
---|
| 849 | }
|
---|
| 850 |
|
---|
| 851 | /**
|
---|
| 852 | * performs the necessary conversions for the E4X response type
|
---|
| 853 | *
|
---|
| 854 | * @access public
|
---|
| 855 | * @param string text the response text
|
---|
| 856 | * @return string
|
---|
| 857 | */
|
---|
| 858 | this.e4x_conversion = function(text) {
|
---|
| 859 | // remove <?xml ?>tag
|
---|
| 860 | text = text.replace(/^\<\?xml[^>]+\>/, '');
|
---|
| 861 | return new XML(text);
|
---|
| 862 | }
|
---|
| 863 |
|
---|
| 864 | /**
|
---|
| 865 | * performs the necessary conversions for the JSON response type
|
---|
| 866 | *
|
---|
| 867 | * @access public
|
---|
| 868 | * @param string text the response text
|
---|
| 869 | * @return string
|
---|
| 870 | */
|
---|
| 871 | this.json_conversion = function(text) {
|
---|
| 872 | return JSON.parse(text);
|
---|
| 873 | }
|
---|
| 874 |
|
---|
| 875 | /**
|
---|
| 876 | * this method takes a HTML / XML node object and creates a
|
---|
| 877 | * JavaScript object structure from it.
|
---|
| 878 | *
|
---|
| 879 | * @access public
|
---|
| 880 | * @param object stream a node in the XML structure
|
---|
| 881 | * @return object
|
---|
| 882 | */
|
---|
| 883 | var create_object_structure = function(stream) {
|
---|
| 884 | var return_value = new cpaint_result_object();
|
---|
| 885 | var node_name = '';
|
---|
| 886 | var i = 0;
|
---|
| 887 | var attrib = 0;
|
---|
| 888 |
|
---|
| 889 | if (stream.hasChildNodes() == true) {
|
---|
| 890 | for (i = 0; i < stream.childNodes.length; i++) {
|
---|
| 891 |
|
---|
| 892 | node_name = stream.childNodes[i].nodeName;
|
---|
| 893 | node_name = node_name.replace(/[^a-zA-Z0-9_]*/g, '');
|
---|
| 894 |
|
---|
| 895 | // reset / create subnode
|
---|
| 896 | if (typeof return_value[node_name] != 'object') {
|
---|
| 897 | return_value[node_name] = new Array();
|
---|
| 898 | }
|
---|
| 899 |
|
---|
| 900 | if (stream.childNodes[i].nodeType == 1) {
|
---|
| 901 | var tmp_node = create_object_structure(stream.childNodes[i]);
|
---|
| 902 |
|
---|
| 903 | for (attrib = 0; attrib < stream.childNodes[i].attributes.length; attrib++) {
|
---|
| 904 | tmp_node.set_attribute(stream.childNodes[i].attributes[attrib].nodeName, stream.childNodes[i].attributes[attrib].nodeValue);
|
---|
| 905 | }
|
---|
| 906 |
|
---|
| 907 | return_value[node_name].push(tmp_node);
|
---|
| 908 |
|
---|
| 909 | } else if (stream.childNodes[i].nodeType == 3) {
|
---|
| 910 | return_value.data = decode(String(stream.firstChild.data));
|
---|
| 911 | }
|
---|
| 912 | }
|
---|
| 913 | }
|
---|
| 914 |
|
---|
| 915 | return return_value;
|
---|
| 916 | }
|
---|
| 917 |
|
---|
| 918 | /**
|
---|
| 919 | * converts an encoded text back to viewable characters.
|
---|
| 920 | *
|
---|
| 921 | * @access public
|
---|
| 922 | * @param string rawtext raw text as provided by the backend
|
---|
| 923 | * @return mixed
|
---|
| 924 | */
|
---|
| 925 | var decode = function(rawtext) {
|
---|
| 926 | var plaintext = '';
|
---|
| 927 | var i = 0;
|
---|
| 928 | var c1 = 0;
|
---|
| 929 | var c2 = 0;
|
---|
| 930 | var c3 = 0;
|
---|
| 931 | var u = 0;
|
---|
| 932 | var t = 0;
|
---|
| 933 |
|
---|
| 934 | // remove special JavaScript encoded non-printable characters
|
---|
| 935 | while (i < rawtext.length) {
|
---|
| 936 | if (rawtext.charAt(i) == '\\'
|
---|
| 937 | && rawtext.charAt(i + 1) == 'u') {
|
---|
| 938 |
|
---|
| 939 | u = 0;
|
---|
| 940 |
|
---|
| 941 | for (j = 2; j < 6; j += 1) {
|
---|
| 942 | t = parseInt(rawtext.charAt(i + j), 16);
|
---|
| 943 |
|
---|
| 944 | if (!isFinite(t)) {
|
---|
| 945 | break;
|
---|
| 946 | }
|
---|
| 947 | u = u * 16 + t;
|
---|
| 948 | }
|
---|
| 949 |
|
---|
| 950 | plaintext += String.fromCharCode(u);
|
---|
| 951 | i += 6;
|
---|
| 952 |
|
---|
| 953 | } else {
|
---|
| 954 | plaintext += rawtext.charAt(i);
|
---|
| 955 | i++;
|
---|
| 956 | }
|
---|
| 957 | }
|
---|
| 958 |
|
---|
| 959 | // convert numeric data to number type
|
---|
| 960 | if (plaintext != ''
|
---|
| 961 | && plaintext.search(/^\s+$/g) == -1
|
---|
| 962 | && !isNaN(plaintext)
|
---|
| 963 | && isFinite(plaintext)) {
|
---|
| 964 |
|
---|
| 965 | plaintext = Number(plaintext);
|
---|
| 966 | }
|
---|
| 967 |
|
---|
| 968 | return plaintext;
|
---|
| 969 | }
|
---|
| 970 | }
|
---|
| 971 |
|
---|
| 972 | /**
|
---|
| 973 | * this is the basic prototype for a cpaint node object
|
---|
| 974 | * as used in cpaint_call.parse_ajax_xml()
|
---|
| 975 | *
|
---|
| 976 | * @package CPAINT
|
---|
| 977 | * @access public
|
---|
| 978 | * @copyright Copyright (c) 2005-2006 Paul Sullivan, Dominique Stender - http://sf.net/projects/cpaint
|
---|
| 979 | * @author Paul Sullivan <wiley14@gmail.com>
|
---|
| 980 | * @author Dominique Stender <dstender@st-webdevelopment.de>
|
---|
| 981 | */
|
---|
| 982 | function cpaint_result_object() {
|
---|
| 983 | this.id = 0;
|
---|
| 984 | this.data = '';
|
---|
| 985 | var __attributes = new Array();
|
---|
| 986 |
|
---|
| 987 | /**
|
---|
| 988 | * Returns a subnode with the given type and id.
|
---|
| 989 | *
|
---|
| 990 | * @access public
|
---|
| 991 | * @param string type The type of the subnode. Equivalent to the XML tag name.
|
---|
| 992 | * @param string id The id of the subnode. Equivalent to the XML tag names id attribute.
|
---|
| 993 | * @return object
|
---|
| 994 | */
|
---|
| 995 | this.find_item_by_id = function() {
|
---|
| 996 | var return_value = null;
|
---|
| 997 | var type = arguments[0];
|
---|
| 998 | var id = arguments[1];
|
---|
| 999 | var i = 0;
|
---|
| 1000 |
|
---|
| 1001 | if (this[type]) {
|
---|
| 1002 |
|
---|
| 1003 | for (i = 0; i < this[type].length; i++) {
|
---|
| 1004 |
|
---|
| 1005 | if (this[type][i].get_attribute('id') == id) {
|
---|
| 1006 | return_value = this[type][i];
|
---|
| 1007 | break;
|
---|
| 1008 | }
|
---|
| 1009 | }
|
---|
| 1010 | }
|
---|
| 1011 |
|
---|
| 1012 | return return_value;
|
---|
| 1013 | }
|
---|
| 1014 |
|
---|
| 1015 | /**
|
---|
| 1016 | * retrieves the value of an attribute.
|
---|
| 1017 | *
|
---|
| 1018 | * @access public
|
---|
| 1019 | * @param string name name of the attribute
|
---|
| 1020 | * @return mixed
|
---|
| 1021 | */
|
---|
| 1022 | this.get_attribute = function() {
|
---|
| 1023 | var return_value = null;
|
---|
| 1024 | var id = arguments[0];
|
---|
| 1025 |
|
---|
| 1026 | if (typeof __attributes[id] != 'undefined') {
|
---|
| 1027 | return_value = __attributes[id];
|
---|
| 1028 | }
|
---|
| 1029 |
|
---|
| 1030 | return return_value;
|
---|
| 1031 | }
|
---|
| 1032 |
|
---|
| 1033 | /**
|
---|
| 1034 | * assigns a value to an attribute.
|
---|
| 1035 | *
|
---|
| 1036 | * if that attribute does not exist it will be created.
|
---|
| 1037 | *
|
---|
| 1038 | * @access public
|
---|
| 1039 | * @param string name name of the attribute
|
---|
| 1040 | * @param string value value of the attribute
|
---|
| 1041 | * @return void
|
---|
| 1042 | */
|
---|
| 1043 | this.set_attribute = function() {
|
---|
| 1044 | __attributes[arguments[0]] = arguments[1];
|
---|
| 1045 | }
|
---|
| 1046 | }
|
---|
| 1047 |
|
---|
| 1048 |
|
---|
| 1049 | /*
|
---|
| 1050 | Copyright (c) 2005 JSON.org
|
---|
| 1051 |
|
---|
| 1052 | Permission is hereby granted, free of charge, to any person obtaining a copy
|
---|
| 1053 | of this software and associated documentation files (the "Software"), to deal
|
---|
| 1054 | in the Software without restriction, including without limitation the rights
|
---|
| 1055 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
---|
| 1056 | copies of the Software, and to permit persons to whom the Software is
|
---|
| 1057 | furnished to do so, subject to the following conditions:
|
---|
| 1058 |
|
---|
| 1059 | The Software shall be used for Good, not Evil.
|
---|
| 1060 |
|
---|
| 1061 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
---|
| 1062 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
---|
| 1063 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
---|
| 1064 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
---|
| 1065 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
---|
| 1066 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
---|
| 1067 | SOFTWARE.
|
---|
| 1068 | */
|
---|
| 1069 |
|
---|
| 1070 | Array.prototype.______array = '______array';
|
---|
| 1071 |
|
---|
| 1072 | var JSON = {
|
---|
| 1073 | org: 'http://www.JSON.org',
|
---|
| 1074 | copyright: '(c)2005 JSON.org',
|
---|
| 1075 | license: 'http://www.crockford.com/JSON/license.html',
|
---|
| 1076 |
|
---|
| 1077 | stringify: function (arg) {
|
---|
| 1078 | var c, i, l, s = '', v;
|
---|
| 1079 | var numeric = true;
|
---|
| 1080 |
|
---|
| 1081 | switch (typeof arg) {
|
---|
| 1082 | case 'object':
|
---|
| 1083 | if (arg) {
|
---|
| 1084 | if (arg.______array == '______array') {
|
---|
| 1085 | // do a test whether all array keys are numeric
|
---|
| 1086 | for (i in arg) {
|
---|
| 1087 | if (i != '______array'
|
---|
| 1088 | && (isNaN(i)
|
---|
| 1089 | || !isFinite(i))) {
|
---|
| 1090 | numeric = false;
|
---|
| 1091 | break;
|
---|
| 1092 | }
|
---|
| 1093 | }
|
---|
| 1094 |
|
---|
| 1095 | if (numeric == true) {
|
---|
| 1096 | for (i = 0; i < arg.length; ++i) {
|
---|
| 1097 | if (typeof arg[i] != 'undefined') {
|
---|
| 1098 | v = this.stringify(arg[i]);
|
---|
| 1099 | if (s) {
|
---|
| 1100 | s += ',';
|
---|
| 1101 | }
|
---|
| 1102 | s += v;
|
---|
| 1103 | } else {
|
---|
| 1104 | s += ',null';
|
---|
| 1105 | }
|
---|
| 1106 | }
|
---|
| 1107 | return '[' + s + ']';
|
---|
| 1108 | } else {
|
---|
| 1109 | for (i in arg) {
|
---|
| 1110 | if (i != '______array') {
|
---|
| 1111 | v = arg[i];
|
---|
| 1112 | if (typeof v != 'undefined' && typeof v != 'function') {
|
---|
| 1113 | v = this.stringify(v);
|
---|
| 1114 | if (s) {
|
---|
| 1115 | s += ',';
|
---|
| 1116 | }
|
---|
| 1117 | s += this.stringify(i) + ':' + v;
|
---|
| 1118 | }
|
---|
| 1119 | }
|
---|
| 1120 | }
|
---|
| 1121 | // return as object
|
---|
| 1122 | return '{' + s + '}';
|
---|
| 1123 | }
|
---|
| 1124 | } else if (typeof arg.toString != 'undefined') {
|
---|
| 1125 | for (i in arg) {
|
---|
| 1126 | v = arg[i];
|
---|
| 1127 | if (typeof v != 'undefined' && typeof v != 'function') {
|
---|
| 1128 | v = this.stringify(v);
|
---|
| 1129 | if (s) {
|
---|
| 1130 | s += ',';
|
---|
| 1131 | }
|
---|
| 1132 | s += this.stringify(i) + ':' + v;
|
---|
| 1133 | }
|
---|
| 1134 | }
|
---|
| 1135 | return '{' + s + '}';
|
---|
| 1136 | }
|
---|
| 1137 | }
|
---|
| 1138 | return 'null';
|
---|
| 1139 | case 'number':
|
---|
| 1140 | return isFinite(arg) ? String(arg) : 'null';
|
---|
| 1141 | case 'string':
|
---|
| 1142 | l = arg.length;
|
---|
| 1143 | s = '"';
|
---|
| 1144 | for (i = 0; i < l; i += 1) {
|
---|
| 1145 | c = arg.charAt(i);
|
---|
| 1146 | if (c >= ' ') {
|
---|
| 1147 | if (c == '\\' || c == '"') {
|
---|
| 1148 | s += '\\';
|
---|
| 1149 | }
|
---|
| 1150 | s += c;
|
---|
| 1151 | } else {
|
---|
| 1152 | switch (c) {
|
---|
| 1153 | case '\b':
|
---|
| 1154 | s += '\\b';
|
---|
| 1155 | break;
|
---|
| 1156 | case '\f':
|
---|
| 1157 | s += '\\f';
|
---|
| 1158 | break;
|
---|
| 1159 | case '\n':
|
---|
| 1160 | s += '\\n';
|
---|
| 1161 | break;
|
---|
| 1162 | case '\r':
|
---|
| 1163 | s += '\\r';
|
---|
| 1164 | break;
|
---|
| 1165 | case '\t':
|
---|
| 1166 | s += '\\t';
|
---|
| 1167 | break;
|
---|
| 1168 | default:
|
---|
| 1169 | c = c.charCodeAt();
|
---|
| 1170 | s += '\\u00' + Math.floor(c / 16).toString(16) +
|
---|
| 1171 | (c % 16).toString(16);
|
---|
| 1172 | }
|
---|
| 1173 | }
|
---|
| 1174 | }
|
---|
| 1175 | return s + '"';
|
---|
| 1176 | case 'boolean':
|
---|
| 1177 | return String(arg);
|
---|
| 1178 | default:
|
---|
| 1179 | return 'null';
|
---|
| 1180 | }
|
---|
| 1181 | },
|
---|
| 1182 | parse: function (text) {
|
---|
| 1183 | var at = 0;
|
---|
| 1184 | var ch = ' ';
|
---|
| 1185 |
|
---|
| 1186 | function error(m) {
|
---|
| 1187 | throw {
|
---|
| 1188 | name: 'JSONError',
|
---|
| 1189 | message: m,
|
---|
| 1190 | at: at - 1,
|
---|
| 1191 | text: text
|
---|
| 1192 | };
|
---|
| 1193 | }
|
---|
| 1194 |
|
---|
| 1195 | function next() {
|
---|
| 1196 | ch = text.charAt(at);
|
---|
| 1197 | at += 1;
|
---|
| 1198 | return ch;
|
---|
| 1199 | }
|
---|
| 1200 |
|
---|
| 1201 | function white() {
|
---|
| 1202 | while (ch != '' && ch <= ' ') {
|
---|
| 1203 | next();
|
---|
| 1204 | }
|
---|
| 1205 | }
|
---|
| 1206 |
|
---|
| 1207 | function str() {
|
---|
| 1208 | var i, s = '', t, u;
|
---|
| 1209 |
|
---|
| 1210 | if (ch == '"') {
|
---|
| 1211 | outer: while (next()) {
|
---|
| 1212 | if (ch == '"') {
|
---|
| 1213 | next();
|
---|
| 1214 | return s;
|
---|
| 1215 | } else if (ch == '\\') {
|
---|
| 1216 | switch (next()) {
|
---|
| 1217 | case 'b':
|
---|
| 1218 | s += '\b';
|
---|
| 1219 | break;
|
---|
| 1220 | case 'f':
|
---|
| 1221 | s += '\f';
|
---|
| 1222 | break;
|
---|
| 1223 | case 'n':
|
---|
| 1224 | s += '\n';
|
---|
| 1225 | break;
|
---|
| 1226 | case 'r':
|
---|
| 1227 | s += '\r';
|
---|
| 1228 | break;
|
---|
| 1229 | case 't':
|
---|
| 1230 | s += '\t';
|
---|
| 1231 | break;
|
---|
| 1232 | case 'u':
|
---|
| 1233 | u = 0;
|
---|
| 1234 | for (i = 0; i < 4; i += 1) {
|
---|
| 1235 | t = parseInt(next(), 16);
|
---|
| 1236 | if (!isFinite(t)) {
|
---|
| 1237 | break outer;
|
---|
| 1238 | }
|
---|
| 1239 | u = u * 16 + t;
|
---|
| 1240 | }
|
---|
| 1241 | s += String.fromCharCode(u);
|
---|
| 1242 | break;
|
---|
| 1243 | default:
|
---|
| 1244 | s += ch;
|
---|
| 1245 | }
|
---|
| 1246 | } else {
|
---|
| 1247 | s += ch;
|
---|
| 1248 | }
|
---|
| 1249 | }
|
---|
| 1250 | }
|
---|
| 1251 | error("Bad string");
|
---|
| 1252 | }
|
---|
| 1253 |
|
---|
| 1254 | function arr() {
|
---|
| 1255 | var a = [];
|
---|
| 1256 |
|
---|
| 1257 | if (ch == '[') {
|
---|
| 1258 | next();
|
---|
| 1259 | white();
|
---|
| 1260 | if (ch == ']') {
|
---|
| 1261 | next();
|
---|
| 1262 | return a;
|
---|
| 1263 | }
|
---|
| 1264 | while (ch) {
|
---|
| 1265 | a.push(val());
|
---|
| 1266 | white();
|
---|
| 1267 | if (ch == ']') {
|
---|
| 1268 | next();
|
---|
| 1269 | return a;
|
---|
| 1270 | } else if (ch != ',') {
|
---|
| 1271 | break;
|
---|
| 1272 | }
|
---|
| 1273 | next();
|
---|
| 1274 | white();
|
---|
| 1275 | }
|
---|
| 1276 | }
|
---|
| 1277 | error("Bad array");
|
---|
| 1278 | }
|
---|
| 1279 |
|
---|
| 1280 | function obj() {
|
---|
| 1281 | var k, o = {};
|
---|
| 1282 |
|
---|
| 1283 | if (ch == '{') {
|
---|
| 1284 | next();
|
---|
| 1285 | white();
|
---|
| 1286 | if (ch == '}') {
|
---|
| 1287 | next();
|
---|
| 1288 | return o;
|
---|
| 1289 | }
|
---|
| 1290 | while (ch) {
|
---|
| 1291 | k = str();
|
---|
| 1292 | white();
|
---|
| 1293 | if (ch != ':') {
|
---|
| 1294 | break;
|
---|
| 1295 | }
|
---|
| 1296 | next();
|
---|
| 1297 | o[k] = val();
|
---|
| 1298 | white();
|
---|
| 1299 | if (ch == '}') {
|
---|
| 1300 | next();
|
---|
| 1301 | return o;
|
---|
| 1302 | } else if (ch != ',') {
|
---|
| 1303 | break;
|
---|
| 1304 | }
|
---|
| 1305 | next();
|
---|
| 1306 | white();
|
---|
| 1307 | }
|
---|
| 1308 | }
|
---|
| 1309 | error("Bad object");
|
---|
| 1310 | }
|
---|
| 1311 |
|
---|
| 1312 | function assoc() {
|
---|
| 1313 | var k, a = [];
|
---|
| 1314 |
|
---|
| 1315 | if (ch == '<') {
|
---|
| 1316 | next();
|
---|
| 1317 | white();
|
---|
| 1318 | if (ch == '>') {
|
---|
| 1319 | next();
|
---|
| 1320 | return a;
|
---|
| 1321 | }
|
---|
| 1322 | while (ch) {
|
---|
| 1323 | k = str();
|
---|
| 1324 | white();
|
---|
| 1325 | if (ch != ':') {
|
---|
| 1326 | break;
|
---|
| 1327 | }
|
---|
| 1328 | next();
|
---|
| 1329 | a[k] = val();
|
---|
| 1330 | white();
|
---|
| 1331 | if (ch == '>') {
|
---|
| 1332 | next();
|
---|
| 1333 | return a;
|
---|
| 1334 | } else if (ch != ',') {
|
---|
| 1335 | break;
|
---|
| 1336 | }
|
---|
| 1337 | next();
|
---|
| 1338 | white();
|
---|
| 1339 | }
|
---|
| 1340 | }
|
---|
| 1341 | error("Bad associative array");
|
---|
| 1342 | }
|
---|
| 1343 |
|
---|
| 1344 | function num() {
|
---|
| 1345 | var n = '', v;
|
---|
| 1346 | if (ch == '-') {
|
---|
| 1347 | n = '-';
|
---|
| 1348 | next();
|
---|
| 1349 | }
|
---|
| 1350 | while (ch >= '0' && ch <= '9') {
|
---|
| 1351 | n += ch;
|
---|
| 1352 | next();
|
---|
| 1353 | }
|
---|
| 1354 | if (ch == '.') {
|
---|
| 1355 | n += '.';
|
---|
| 1356 | while (next() && ch >= '0' && ch <= '9') {
|
---|
| 1357 | n += ch;
|
---|
| 1358 | }
|
---|
| 1359 | }
|
---|
| 1360 | if (ch == 'e' || ch == 'E') {
|
---|
| 1361 | n += 'e';
|
---|
| 1362 | next();
|
---|
| 1363 | if (ch == '-' || ch == '+') {
|
---|
| 1364 | n += ch;
|
---|
| 1365 | next();
|
---|
| 1366 | }
|
---|
| 1367 | while (ch >= '0' && ch <= '9') {
|
---|
| 1368 | n += ch;
|
---|
| 1369 | next();
|
---|
| 1370 | }
|
---|
| 1371 | }
|
---|
| 1372 | v = +n;
|
---|
| 1373 | if (!isFinite(v)) {
|
---|
| 1374 | error("Bad number");
|
---|
| 1375 | } else {
|
---|
| 1376 | return v;
|
---|
| 1377 | }
|
---|
| 1378 | }
|
---|
| 1379 |
|
---|
| 1380 | function word() {
|
---|
| 1381 | switch (ch) {
|
---|
| 1382 | case 't':
|
---|
| 1383 | if (next() == 'r' && next() == 'u' && next() == 'e') {
|
---|
| 1384 | next();
|
---|
| 1385 | return true;
|
---|
| 1386 | }
|
---|
| 1387 | break;
|
---|
| 1388 | case 'f':
|
---|
| 1389 | if (next() == 'a' && next() == 'l' && next() == 's' &&
|
---|
| 1390 | next() == 'e') {
|
---|
| 1391 | next();
|
---|
| 1392 | return false;
|
---|
| 1393 | }
|
---|
| 1394 | break;
|
---|
| 1395 | case 'n':
|
---|
| 1396 | if (next() == 'u' && next() == 'l' && next() == 'l') {
|
---|
| 1397 | next();
|
---|
| 1398 | return null;
|
---|
| 1399 | }
|
---|
| 1400 | break;
|
---|
| 1401 | }
|
---|
| 1402 | error("Syntax error");
|
---|
| 1403 | }
|
---|
| 1404 |
|
---|
| 1405 | function val() {
|
---|
| 1406 | white();
|
---|
| 1407 | switch (ch) {
|
---|
| 1408 | case '{':
|
---|
| 1409 | return obj();
|
---|
| 1410 | case '[':
|
---|
| 1411 | return arr();
|
---|
| 1412 | case '<':
|
---|
| 1413 | return assoc();
|
---|
| 1414 | case '"':
|
---|
| 1415 | return str();
|
---|
| 1416 | case '-':
|
---|
| 1417 | return num();
|
---|
| 1418 | default:
|
---|
| 1419 | return ch >= '0' && ch <= '9' ? num() : word();
|
---|
| 1420 | }
|
---|
| 1421 | }
|
---|
| 1422 |
|
---|
| 1423 | return val();
|
---|
| 1424 | }
|
---|
| 1425 | };
|
---|