https://www.casteelsepoort.nl/wp-content/plugins/event-calendar/xmlhttprequest.js

1/*
2
3Cross-Browser XMLHttpRequest v1.2
4=================================
5
6Emulate Gecko 'XMLHttpRequest()' functionality in IE and Opera. Opera requires
7the Sun Java Runtime Environment <http://www.java.com/>.
8
9by Andrew Gregory
10http://www.scss.com.au/family/andrew/webdesign/xmlhttprequest/
11
12This work is licensed under the Creative Commons Attribution License. To view a
13copy of this license, visit http://creativecommons.org/licenses/by-sa/2.5/ or
14send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California
1594305, USA.
16
17Attribution: Leave my name and web address in this script intact.
18
19Not Supported in Opera
20----------------------
21* user/password authentication
22* responseXML data member
23
24Not Fully Supported in Opera
25----------------------------
26* async requests
27* abort()
28* getAllResponseHeaders(), getAllResponseHeader(header)
29
30*/
31// IE support
32if (window.ActiveXObject && !window.XMLHttpRequest) {
33  window.XMLHttpRequest = function() {
34    var msxmls = new Array(
35      'Msxml2.XMLHTTP.5.0',
36      'Msxml2.XMLHTTP.4.0',
37      'Msxml2.XMLHTTP.3.0',
38      'Msxml2.XMLHTTP',
39      'Microsoft.XMLHTTP');
40    for (var i = 0; i < msxmls.length; i++) {
41      try {
42        return new ActiveXObject(msxmls[i]);
43      } catch (e) {
44      }
45    }
46    return null;
47  };
48}
49// Gecko support
50/* ;-) */

51// Opera support
52if (window.opera && !window.XMLHttpRequest) {
53  window.XMLHttpRequest = function() {
54    this.readyState = 0; // 0=uninitialized,1=loading,2=loaded,3=interactive,4=complete
55    this.status = 0; // HTTP status codes
56    this.statusText = '';
57    this._headers = [];
58    this._aborted = false;
59    this._async = true;
60    this._defaultCharset = 'ISO-8859-1';
61    this._getCharset = function() {
62      var charset = _defaultCharset;
63      var contentType = this.getResponseHeader('Content-type').toUpperCase();
64      val = contentType.indexOf('CHARSET=');
65      if (val != -1) {
66        charset = contentType.substring(val);
67      }
68      val = charset.indexOf(';');
69      if (val != -1) {
70        charset = charset.substring(0, val);
71      }
72      val = charset.indexOf(',');
73      if (val != -1) {
74        charset = charset.substring(0, val);
75      }
76      return charset;
77    };
78    this.abort = function() {
79      this._aborted = true;
80    };
81    this.getAllResponseHeaders = function() {
82      return this.getAllResponseHeader('*');
83    };
84    this.getAllResponseHeader = function(header) {
85      var ret = '';
86      for (var i = 0; i < this._headers.length; i++) {
87        if (header == '*' || this._headers[i].h == header) {
88          ret += this._headers[i].h + ': ' + this._headers[i].v + '\n';
89        }
90      }
91      return ret;
92    };
93    this.getResponseHeader = function(header) {
94      var ret = getAllResponseHeader(header);
95      var i = ret.indexOf('\n');
96      if (i != -1) {
97        ret = ret.substring(0, i);
98      }
99      return ret;
100    };
101    this.setRequestHeader = function(header, value) {
102      this._headers[this._headers.length] = {h:header, v:value};
103    };
104    this.open = function(method, url, async, user, password) {
105      this.method = method;
106      this.url = url;
107      this._async = true;
108      this._aborted = false;
109      this._headers = [];
110      if (arguments.length >= 3) {
111        this._async = async;
112      }
113      if (arguments.length > 3) {
114        opera.postError('XMLHttpRequest.open() - user/password not supported');
115      }
116      this.readyState = 1;
117      if (this.onreadystatechange) {
118        this.onreadystatechange();
119      }
120    };
121    this.send = function(data) {
122      if (!navigator.javaEnabled()) {
123        alert("XMLHttpRequest.send() - Java must be installed and enabled.");
124        return;
125      }
126      if (this._async) {
127        setTimeout(this._sendasync, 0, this, data);
128        // this is not really asynchronous and won't execute until the current
129        // execution context ends
130      } else {
131        this._sendsync(data);
132      }
133    }
134    this._sendasync = function(req, data) {
135      if (!req._aborted) {
136        req._sendsync(data);
137      }
138    };
139    this._sendsync = function(data) {
140      this.readyState = 2;
141      if (this.onreadystatechange) {
142        this.onreadystatechange();
143      }
144      // open connection
145      var url = new java.net.URL(new java.net.URL(window.location.href), this.url);
146      var conn = url.openConnection();
147      for (var i = 0; i < this._headers.length; i++) {
148        conn.setRequestProperty(this._headers[i].h, this._headers[i].v);
149      }
150      this._headers = [];
151      if (this.method == 'POST') {
152        // POST data
153        conn.setDoOutput(true);
154        var wr = new java.io.OutputStreamWriter(conn.getOutputStream(), this._getCharset());
155        wr.write(data);
156        wr.flush();
157        wr.close();
158      }
159      // read response headers
160      // NOTE: the getHeaderField() methods always return nulls for me :(
161      var gotContentEncoding = false;
162      var gotContentLength = false;
163      var gotContentType = false;

164      var gotDate = false;
165      var gotExpiration = false;
166      var gotLastModified = false;
167      for (var i = 0; ; i++) {
168        var hdrName = conn.getHeaderFieldKey(i);
169        var hdrValue = conn.getHeaderField(i);
170        if (hdrName == null && hdrValue == null) {
171          break;
172        }
173        if (hdrName != null) {
174          this._headers[this._headers.length] = {h:hdrName, v:hdrValue};
175          switch (hdrName.toLowerCase()) {
176            case 'content-encoding': gotContentEncoding = true; break;
177            case 'content-length'  : gotContentLength   = true; break;
178            case 'content-type'    : gotContentType     = true; break;
179            case 'date'            : gotDate            = true; break;
180            case 'expires'         : gotExpiration      = true; break;
181            case 'last-modified'   : gotLastModified    = true; break;
182          }
183        }
184      }
185      // try to fill in any missing header information
186      var val;
187      val = conn.getContentEncoding();
188      if (val != null && !gotContentEncoding) this._headers[this._headers.length] = {h:'Content-encoding', v:val};
189      val = conn.getContentLength();
190      if (val != -1 && !gotContentLength) this._headers[this._headers.length] = {h:'Content-length', v:val};
191      val = conn.getContentType();
192      if (val != null && !gotContentType) this._headers[this._headers.length] = {h:'Content-type', v:val};
193      val = conn.getDate();
194      if (val != 0 && !gotDate) this._headers[this._headers.length] = {h:'Date', v:(new Date(val)).toUTCString()};
195      val = conn.getExpiration();
196      if (val != 0 && !gotExpiration) this._headers[this._headers.length] = {h:'Expires', v:(new Date(val)).toUTCString()};
197      val = conn.getLastModified();
198      if (val != 0 && !gotLastModified) this._headers[this._headers.length] = {h:'Last-modified', v:(new Date(val)).toUTCString()};
199      // read response data
200      var reqdata = '';
201      var stream = conn.getInputStream();
202      if (stream) {
203        var reader = new java.io.BufferedReader(new java.io.InputStreamReader(stream, this._getCharset()));
204        var line;
205        while ((line = reader.readLine()) != null) {
206          if (this.readyState == 2) {
207            this.readyState = 3;
208            if (this.onreadystatechange) {
209              this.onreadystatechange();
210            }
211          }
212          reqdata += line + '\n';
213        }
214        reader.close();
215        this.status = 200;
216        this.statusText = 'OK';
217        this.responseText = reqdata;
218        this.readyState = 4;
219        if (this.onreadystatechange) {
220          this.onreadystatechange();
221        }
222        if (this.onload) {
223          this.onload();
224        }
225      } else {
226        // error
227        this.status = 404;
228        this.statusText = 'Not Found';
229        this.responseText = '';
230        this.readyState = 4;
231        if (this.onreadystatechange) {
232          this.onreadystatechange();
233        }
234        if (this.onerror) {
235          this.onerror();
236        }
237      }
238    };
239  };
240}
241// ActiveXObject emulation
242if (!window.ActiveXObject && window.XMLHttpRequest) {
243  window.ActiveXObject = function(type) {
244    switch (type.toLowerCase()) {
245      case 'microsoft.xmlhttp':
246      case 'msxml2.xmlhttp':
247      case 'msxml2.xmlhttp.3.0':
248      case 'msxml2.xmlhttp.4.0':
249      case 'msxml2.xmlhttp.5.0':
250        return new XMLHttpRequest();
251    }
252    return null;
253  };
254}