twFileDemo.html (70810B)
1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> 2 <html lang="en"> 3 <head> 4 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 5 <title>jQuery.twFileDemo</title> 6 <style type="text/css"> 7 #editButton { 8 float: left; 9 } 10 11 #error { 12 display: none; 13 float: left; 14 text-indent: 20px; 15 color: #F00; 16 } 17 </style> 18 </head> 19 <body> 20 <h1>jQuery.twFileDemo</h1> 21 <p> 22 This is an example file that can be used to test out the saving and loading system. 23 Press the edit button to view the page HTML and you can then make changes. Press save 24 to update the page. 25 </p> 26 <h2>Dummy Text</h2> 27 <p> 28 Hello world ! 29 </p> 30 <h2>Tools</h2> 31 <input type="button" id="editButton" value="Edit"> 32 <div id="error">Cannot load file</div> 33 34 <!-- jQuery --> 35 <script type="text/javascript"> 36 /* 37 * jQuery JavaScript Library v1.3.2 38 * http://jquery.com/ 39 * 40 * Copyright (c) 2009 John Resig 41 * Dual licensed under the MIT and GPL licenses. 42 * http://docs.jquery.com/License 43 * 44 * Date: 2009-02-19 17:34:21 -0500 (Thu, 19 Feb 2009) 45 * Revision: 6246 46 */ 47 (function(){var l=this,g,y=l.jQuery,p=l.$,o=l.jQuery=l.$=function(E,F){return new o.fn.init(E,F)},D=/^[^<]*(<(.|\s)+>)[^>]*$|^#([\w-]+)$/,f=/^.[^:#\[\.,]*$/;o.fn=o.prototype={init:function(E,H){E=E||document;if(E.nodeType){this[0]=E;this.length=1;this.context=E;return this}if(typeof E==="string"){var G=D.exec(E);if(G&&(G[1]||!H)){if(G[1]){E=o.clean([G[1]],H)}else{var I=document.getElementById(G[3]);if(I&&I.id!=G[3]){return o().find(E)}var F=o(I||[]);F.context=document;F.selector=E;return F}}else{return o(H).find(E)}}else{if(o.isFunction(E)){return o(document).ready(E)}}if(E.selector&&E.context){this.selector=E.selector;this.context=E.context}return this.setArray(o.isArray(E)?E:o.makeArray(E))},selector:"",jquery:"1.3.2",size:function(){return this.length},get:function(E){return E===g?Array.prototype.slice.call(this):this[E]},pushStack:function(F,H,E){var G=o(F);G.prevObject=this;G.context=this.context;if(H==="find"){G.selector=this.selector+(this.selector?" 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71 72 (function($) { 73 if(!$.twFile) { 74 $.twFile = {}; 75 } 76 77 $.extend($.twFile,{ 78 currentDriver: null, 79 driverList: ["activeX", "mozilla", "tiddlySaver", "javaLiveConnect"], 80 81 // Loads the contents of a text file from the local file system 82 // filePath is the path to the file in these formats: 83 // x:\path\path\path\filename - PC local file 84 // \\server\share\path\path\path\filename - PC network file 85 // /path/path/path/filename - Mac/Unix local file 86 // returns the text of the file, or null if the operation cannot be performed or false if there was an error 87 load: function(filePath) { 88 return this.getDriver().loadFile(filePath); 89 }, 90 // Saves a string to a text file on the local file system 91 // filePath is the path to the file in the format described above 92 // content is the string to save 93 // returns true if the file was saved successfully, or null if the operation cannot be performed or false if there was an error 94 save: function(filePath,content) { 95 return this.getDriver().saveFile(filePath,content); 96 }, 97 // Copies a file on the local file system 98 // dest is the path to the destination file in the format described above 99 // source is the path to the source file in the format described above 100 // returns true if the file was copied successfully, or null if the operation cannot be performed or false if there was an error 101 copy: function(dest,source) { 102 if(this.getDriver().copyFile) 103 return this.currentDriver.copyFile(dest,source); 104 else 105 return null; 106 }, 107 // Converts a local file path from the format returned by document.location into the format expected by this plugin 108 // url is the original URL of the file 109 // returns the equivalent local file path 110 convertUriToLocalPath: function (url) { 111 // Remove any location or query part of the URL 112 var originalPath = url.split("#")[0].split("?")[0]; 113 // Convert file://localhost/ to file:/// 114 if(originalPath.indexOf("file://localhost/") == 0) 115 originalPath = "file://" + originalPath.substr(16); 116 // Convert to a native file format 117 //# "file:///x:/path/path/path..." - pc local file --> "x:\path\path\path..." 118 //# "file://///server/share/path/path/path..." - FireFox pc network file --> "\\server\share\path\path\path..." 119 //# "file:///path/path/path..." - mac/unix local file --> "/path/path/path..." 120 //# "file://server/share/path/path/path..." - pc network file --> "\\server\share\path\path\path..." 121 var localPath; 122 if(originalPath.charAt(9) == ":") // PC local file 123 localPath = unescape(originalPath.substr(8)).replace(new RegExp("/","g"),"\\"); 124 else if(originalPath.indexOf("file://///") == 0) // Firefox PC network file 125 localPath = "\\\\" + unescape(originalPath.substr(10)).replace(new RegExp("/","g"),"\\"); 126 else if(originalPath.indexOf("file:///") == 0) // Mac/UNIX local file 127 localPath = unescape(originalPath.substr(7)); 128 else if(originalPath.indexOf("file:/") == 0) // Mac/UNIX local file 129 localPath = unescape(originalPath.substr(5)); 130 else if(originalPath.indexOf("//") == 0) // PC network file 131 localPath = "\\\\" + unescape(originalPath.substr(7)).replace(new RegExp("/","g"),"\\"); 132 return localPath || originalPath; 133 }, 134 135 // Private functions 136 137 // Returns a reference to the current driver 138 getDriver: function() { 139 if(this.currentDriver === null) { 140 for(var t=0; t<this.driverList.length; t++) { 141 if(this.currentDriver === null && drivers[this.driverList[t]].isAvailable && drivers[this.driverList[t]].isAvailable()) 142 this.currentDriver = drivers[this.driverList[t]]; 143 } 144 } 145 return this.currentDriver; 146 } 147 }); 148 149 // Deferred initialisation for any drivers that need it 150 $(function() { 151 for(var t in drivers) { 152 if(drivers[t].deferredInit) 153 drivers[t].deferredInit(); 154 } 155 }); 156 157 // Private driver implementations for each browser 158 159 var drivers = {}; 160 161 // Internet Explorer driver 162 163 drivers.activeX = { 164 name: "activeX", 165 isAvailable: function() { 166 try { 167 var fso = new ActiveXObject("Scripting.FileSystemObject"); 168 } catch(ex) { 169 return false; 170 } 171 return true; 172 }, 173 loadFile: function(filePath) { 174 // Returns null if it can't do it, false if there's an error, or a string of the content if successful 175 try { 176 var fso = new ActiveXObject("Scripting.FileSystemObject"); 177 var file = fso.OpenTextFile(filePath,1); 178 var content = file.ReadAll(); 179 file.Close(); 180 } catch(ex) { 181 //# alert("Exception while attempting to load\n\n" + ex.toString()); 182 return null; 183 } 184 return content; 185 }, 186 createPath: function(path) { 187 //# Remove the filename, if present. Use trailing slash (i.e. "foo\bar\") if no filename. 188 var pos = path.lastIndexOf("\\"); 189 if(pos!=-1) 190 path = path.substring(0,pos+1); 191 //# Walk up the path until we find a folder that exists 192 var scan = [path]; 193 try { 194 var fso = new ActiveXObject("Scripting.FileSystemObject"); 195 var parent = fso.GetParentFolderName(path); 196 while(parent && !fso.FolderExists(parent)) { 197 scan.push(parent); 198 parent = fso.GetParentFolderName(parent); 199 } 200 //# Walk back down the path, creating folders 201 for(i=scan.length-1;i>=0;i--) { 202 if(!fso.FolderExists(scan[i])) { 203 fso.CreateFolder(scan[i]); 204 } 205 } 206 return true; 207 } catch(ex) { 208 } 209 return false; 210 }, 211 copyFile: function(dest,source) { 212 drivers.activeX.createPath(dest); 213 try { 214 var fso = new ActiveXObject("Scripting.FileSystemObject"); 215 fso.GetFile(source).Copy(dest); 216 } catch(ex) { 217 return false; 218 } 219 return true; 220 }, 221 saveFile: function(filePath,content) { 222 // Returns null if it can't do it, false if there's an error, true if it saved OK 223 drivers.activeX.createPath(filePath); 224 try { 225 var fso = new ActiveXObject("Scripting.FileSystemObject"); 226 var file = fso.OpenTextFile(filePath,2,-1,0); 227 file.Write(content); 228 file.Close(); 229 } catch (ex) { 230 return null; 231 } 232 return true; 233 } 234 }; 235 236 // Mozilla driver 237 238 drivers.mozilla = { 239 name: "mozilla", 240 isAvailable: function() { 241 return !!window.Components; 242 }, 243 loadFile: function(filePath) { 244 // Returns null if it can't do it, false if there's an error, or a string of the content if successful 245 if(window.Components) { 246 try { 247 netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect"); 248 var file = Components.classes["@mozilla.org/file/local;1"].createInstance(Components.interfaces.nsILocalFile); 249 file.initWithPath(filePath); 250 if(!file.exists()) 251 return null; 252 var inputStream = Components.classes["@mozilla.org/network/file-input-stream;1"].createInstance(Components.interfaces.nsIFileInputStream); 253 inputStream.init(file,0x01,00004,null); 254 var sInputStream = Components.classes["@mozilla.org/scriptableinputstream;1"].createInstance(Components.interfaces.nsIScriptableInputStream); 255 sInputStream.init(inputStream); 256 var contents = sInputStream.read(sInputStream.available()); 257 sInputStream.close(); 258 inputStream.close(); 259 return contents; 260 } catch(ex) { 261 //# alert("Exception while attempting to load\n\n" + ex); 262 return false; 263 } 264 } 265 return null; 266 }, 267 saveFile: function(filePath,content) { 268 // Returns null if it can't do it, false if there's an error, true if it saved OK 269 if(window.Components) { 270 try { 271 netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect"); 272 var file = Components.classes["@mozilla.org/file/local;1"].createInstance(Components.interfaces.nsILocalFile); 273 file.initWithPath(filePath); 274 if(!file.exists()) 275 file.create(0,0664); 276 var out = Components.classes["@mozilla.org/network/file-output-stream;1"].createInstance(Components.interfaces.nsIFileOutputStream); 277 out.init(file,0x20|0x02,00004,null); 278 out.write(content,content.length); 279 out.flush(); 280 out.close(); 281 return true; 282 } catch(ex) { 283 alert("Exception while attempting to save\n\n" + ex); 284 return false; 285 } 286 } 287 return null; 288 } 289 }; 290 291 // TiddlySaver driver 292 293 drivers.tiddlySaver = { 294 name: "tiddlySaver", 295 deferredInit: function() { 296 if(!document.applets["TiddlySaver"] && !$.browser.mozilla && !$.browser.msie && document.location.toString().substr(0,5) == "file:") { 297 $(document.body).append("<applet style='position:absolute;left:-1px' name='TiddlySaver' code='TiddlySaver.class' archive='TiddlySaver.jar' width='1'height='1'></applet>"); 298 } 299 }, 300 isAvailable: function() { 301 return !!document.applets["TiddlySaver"]; 302 }, 303 loadFile: function(filePath) { 304 var r; 305 try { 306 if(document.applets["TiddlySaver"]) { 307 r = document.applets["TiddlySaver"].loadFile(javaUrlToFilename(filePath),"UTF-8"); 308 return (r === undefined || r === null) ? null : String(r); 309 } 310 } catch(ex) { 311 } 312 return null; 313 }, 314 saveFile: function(filePath,content) { 315 try { 316 if(document.applets["TiddlySaver"]) 317 return document.applets["TiddlySaver"].saveFile(javaUrlToFilename(filePath),"UTF-8",content); 318 } catch(ex) { 319 } 320 return null; 321 } 322 } 323 324 // Java LiveConnect driver 325 326 drivers.javaLiveConnect = { 327 name: "javaLiveConnect", 328 isAvailable: function() { 329 return !!window.java && !!window.java.io && !!window.java.io.FileReader; 330 }, 331 loadFile: function(filePath) { 332 var r; 333 var content = []; 334 try { 335 r = new java.io.BufferedReader(new java.io.FileReader(javaUrlToFilename(filePath))); 336 var line; 337 while((line = r.readLine()) != null) 338 content.push(new String(line)); 339 r.close(); 340 } catch(ex) { 341 return null; 342 } 343 return content.join("\n") + "\n"; 344 }, 345 saveFile: function(filePath,content) { 346 try { 347 var s = new java.io.PrintStream(new java.io.FileOutputStream(javaUrlToFilename(filePath))); 348 s.print(content); 349 s.close(); 350 } catch(ex) { 351 return null; 352 } 353 return true; 354 } 355 } 356 357 // Private utilities 358 359 function javaUrlToFilename(url) { 360 var f = "//localhost"; 361 if(url.indexOf(f) == 0) 362 return url.substring(f.length); 363 var i = url.indexOf(":"); 364 return i > 0 ? url.substring(i-1) : url; 365 } 366 367 })(jQuery); 368 </script> 369 <!-- demo code --> 370 <script type="text/javascript"> 371 // Run on document load 372 jQuery(function() { 373 var $ = jQuery; // local alias 374 // When the edit button is clicked, open an editing box 375 // over the page to edit the html of the page. On save, 376 // the page reloads with the changes. 377 $('#editButton').click(function() { 378 var filepath = document.location.href; // Get the current file 379 filepath = $.twFile.convertUriToLocalPath(filepath); // Convert the path to a readable format 380 var text = $.twFile.load(filepath); // Load the file 381 // If the file loads succesfully create an editing element 382 if(text){ 383 // Create a textarea 384 var textarea = $("<textarea></textarea><br>").css({ 385 marginTop: "8px", 386 width: "90%", 387 height: "90%" 388 }).text(text); 389 // Create a save button 390 var dButton = $('<input type="button" value="Save">').click(function(){ 391 // On click, write the value of the textarea to file 392 $.twFile.save(filepath, textarea.val()); 393 // Reload the file 394 box.animate({ opacity: 0 }, function() { 395 window.location.reload(); 396 }); 397 }); 398 // Create a div to contain the text area 399 var box = $("<div></div>").css({ 400 position: "fixed", 401 textAlign: "center", 402 top:"0", 403 left: "0", 404 width: "100%", 405 height: "100%", 406 opacity: "0", 407 background: "black" 408 }).append(textarea).append(dButton); 409 $("body").append(box); 410 // Fade in 411 box.animate({ opacity: 1 }); 412 } else { 413 // Show an error message on fail 414 $("#error").fadeIn(); 415 } 416 }) 417 }); 418 </script> 419 </body> 420 421 </html>