js/jslib.js

   1 Array.prototype.indexFromEnd = function(d) {
   2   var p = this;
   3
   4   if(d < 0)
   5     return p[p.length + d];
   6
   7   return p[d];
   8 }
   9
  10 qwebirc.util.dictCopy = function(d) {
  11   var n = {};
  12   for(var k in d)
  13     n[k] = d[k];
  14
  15   return n;
  16 }
  17
  18 /* how horribly inefficient */
  19 String.prototype.replaceAll = function(f, t) {
  20   var i = this.indexOf(f);
  21   var c = this;
  22
  23   while(i > -1) {
  24     c = c.replace(f, t);
  25     i = c.indexOf(f);
  26   }
  27   return c;
  28 }
  29
  30 /* how horribly inefficient (again) */
  31 String.prototype.splitMax = function(by, max) {
  32   var items = this.split(by);
  33   var newitems = items.slice(0, max-1);
  34
  35   if(items.length >= max)
  36     newitems.push(items.slice(max-1).join(by));
  37
  38   return newitems;
  39 }
  40
  41 /* returns the arguments */
  42 qwebirc.util.parseURI = function(uri) {
  43   var result = {}
  44
  45   var start = uri.indexOf('?');
  46   if(start == -1)
  47     return result;
  48
  49   var querystring = uri.substring(start + 1);
  50
  51   var args = querystring.split("&");
  52
  53   for(var i=0;i<args.length;i++) {
  54     var r = args[i].splitMax("=", 2);
  55     if(r.length < 2)
  56       continue;
  57
  58     result[unescape(r[0])] = unescape(r[1]);
  59   }
  60
  61   return result;
  62 }
  63
  64 qwebirc.util.DaysOfWeek = {
  65   0: "Sun",
  66   1: "Mon",
  67   2: "Tue",
  68   3: "Wed",
  69   4: "Thu",
  70   5: "Fri",
  71   6: "Sat"
  72 };
  73
  74 qwebirc.util.MonthsOfYear = {
  75   0: "Jan",
  76   1: "Feb",
  77   2: "Mar",
  78   3: "Apr",
  79   4: "May",
  80   5: "Jun",
  81   6: "Jul",
  82   7: "Aug",
  83   8: "Sep",
  84   9: "Oct",
  85   10: "Nov",
  86   11: "Dec"
  87 };
  88
  89 qwebirc.util.NBSPCreate = function(text, element) {
  90   var e = text.split("  ");
  91   for(var i=0;i<e.length;i++) {
  92     var tn = document.createTextNode(e[i]);
  93     element.appendChild(tn);
  94
  95     if(i != e.length - 1) {
  96       var e2 = new Element("span");
  97       e2.set("html", "&nbsp;&nbsp;");
  98       element.appendChild(e2);
  99     }
 100   }
 101 };
 102
 103 qwebirc.util.longtoduration = function(l) {
 104   var seconds = l % 60;
 105   var minutes = Math.round((l % 3600) / 60);
 106   var hours = Math.round((l % (3600 * 24)) / 3600);
 107   var days = Math.round(l / (24*3600));
 108
 109   return days + " days " + hours + " hours " + minutes + " minutes " + seconds + " seconds";
 110 }
 111
 112 qwebirc.util.pad = function(x) {
 113   x = "" + x;
 114   if(x.length == 1)
 115     return "0" + x;
 116   return x
 117 }
 118
 119 RegExp.escape = function(text) {
 120   if(!arguments.callee.sRE) {
 121     var specials = [
 122       '/', '.', '*', '+', '?', '|',
 123       '(', ')', '[', ']', '{', '}', '\\'
 124     ];
 125     arguments.callee.sRE = new RegExp('(\\' + specials.join('|\\') + ')', 'g');
 126   }
 127
 128   return text.replace(arguments.callee.sRE, '\\$1');
 129 }
 130
 131 qwebirc.ui.insertAt = function(position, parent, element) {
 132   if(!parent.childNodes || (position >= parent.childNodes.length)) {
 133     parent.appendChild(element);
 134   } else {
 135     parent.insertBefore(element, parent.childNodes[position]);
 136   }
 137 }
 138
 139 qwebirc.util.setCaretPos = function(obj, pos) {
 140   if($defined(obj.selectionStart)) {
 141     obj.focus();
 142     obj.setSelectionRange(pos, pos);
 143   } else if(obj.createTextRange) {
 144     var range = obj.createTextRange();
 145     range.move("character", pos);
 146     range.select();
 147   }
 148 }
 149
 150 qwebirc.util.setAtEnd = function(obj) {
 151   qwebirc.util.setCaretPos(obj.value.length);
 152 }
 153
 154 qwebirc.util.getCaretPos = function(element) {
 155   if($defined(element.selectionStart))
 156     return element.selectionStart;
 157
 158   if(document.selection) {
 159     element.focus();
 160     var sel = document.selection.createRange();
 161     sel.moveStart("character", -element.value.length);
 162     return sel.text.length;
 163   }
 164 }
 165
 166 qwebirc.util.browserVersion = function() {
 167   //return "engine: " + Browser.Engine.name + " platform: " + Browser.Platform.name + " user agent: " + navigator.userAgent;
 168   return navigator.userAgent;
 169 }
 170
 171 qwebirc.util.getEnclosedWord = function(text, position) {
 172   var l = text.split("");
 173   var buf = [];
 174
 175   if(text == "")
 176     return;
 177
 178   var start = position - 1;
 179   if(start < 0) {
 180     /* special case: starting with space */
 181     start = 0;
 182   } else {
 183     /* work back until we find the first space */
 184     for(;start>=0;start--) {
 185       if(l[start] == ' ') {
 186         start = start + 1;
 187         break;
 188       }
 189     }
 190   }
 191
 192   if(start < 0)
 193     start = 0;
 194
 195   var s = text.substring(start);
 196   var pos = s.indexOf(" ");
 197   if(pos != -1)
 198     s = s.substring(0, pos);
 199
 200   return [start, s];
 201 }
 202
 203 String.prototype.startsWith = function(what) {
 204   return this.substring(0, what.length) == what;
 205 }
 206
 207 /* NOT cryptographically secure! */
 208 qwebirc.util.randHexString = function(numBytes) {
 209   var getByte = function() {
 210     return (((1+Math.random())*0x100)|0).toString(16).substring(1);
 211   };
 212
 213   var l = [];
 214   for(var i=0;i<numBytes;i++)
 215     l.push(getByte());
 216
 217   return l.join("");
 218 }
 219
 220 qwebirc.util.importJS = function(name, watchFor, onload) {
 221   var script = document.createElement("script");
 222   script.type = "text/javascript";
 223   script.src = name;
 224
 225   if(Browser.Engine.trident) {
 226     /* HORRID */
 227     var checkFn = function() {
 228       if(eval("typeof " + watchFor) != "undefined") {
 229         onload();
 230       } else {
 231         checkFn.delay(100);
 232       }
 233     }
 234     checkFn();
 235   } else {
 236     script.onload = onload;
 237   }
 238   document.getElementsByTagName("head")[0].appendChild(script);
 239 }
 240
 241 qwebirc.util.createInput = function(type, parent, name, selected) {
 242   var r;
 243   if(Browser.Engine.trident) {
 244     if(name) {
 245       name = " name=\"" + escape(name) + "\"";
 246     } else {
 247       name = "";
 248     }
 249     r = $(document.createElement("<input type=\"" + type + "\"" + name + " " + (selected?" checked":"") + "/>"));
 250   } else {
 251     r = new Element("input");
 252     r.type = type;
 253     if(name)
 254       r.name = name;
 255
 256     if(selected)
 257       r.checked = true;
 258   }
 259
 260   parent.appendChild(r);
 261   return r;
 262 }
 263
 264 /* From: www.webtoolkit.info */
 265 qwebirc.util.b64Table = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
 266 qwebirc.util.b64Encode = function(data) {
 267   var output = [];
 268   var table = qwebirc.util.b64Table;
 269   for(var i=0;i<data.length;) {
 270     var chr1 = data.charCodeAt(i++);
 271     var chr2 = data.charCodeAt(i++);
 272     var chr3 = data.charCodeAt(i++);
 273
 274     var enc1 = chr1 >> 2;
 275     var enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
 276     var enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
 277     var enc4 = chr3 & 63;
 278
 279     if(isNaN(chr2)) {
 280       enc3 = enc4 = 64;
 281     } else if(isNaN(chr3)) {
 282       enc4 = 64;
 283     }
 284
 285     output.push(table.charAt(enc1) + table.charAt(enc2) + table.charAt(enc3) + table.charAt(enc4));
 286   }
 287   return output.join("");
 288 }
 289
 290 /* From: www.webtoolkit.info */
 291 qwebirc.util.b64Decode = function(data) {
 292   data = data.replace(/[^A-Za-z0-9\+\/\=]/g, "");
 293
 294   var output = [];
 295   var table = qwebirc.util.b64Table;
 296   for(var i=0;i<data.length;) {
 297     var enc1 = table.indexOf(data.charAt(i++));
 298     var enc2 = table.indexOf(data.charAt(i++));
 299     var enc3 = table.indexOf(data.charAt(i++));
 300     var enc4 = table.indexOf(data.charAt(i++));
 301
 302     var chr1 = (enc1 << 2) | (enc2 >> 4);
 303     var chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
 304     var chr3 = ((enc3 & 3) << 6) | enc4;
 305
 306     output.push(String.fromCharCode(chr1));
 307     if (enc3 != 64)
 308       output.push(String.fromCharCode(chr2));
 309     if (enc4 != 64)
 310       output.push(String.fromCharCode(chr3));
 311   }
 312
 313   return output.join("");
 314 }