mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-10-29 22:26:17 +00:00
334 lines
11 KiB
JavaScript
Executable File
334 lines
11 KiB
JavaScript
Executable File
/*
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jQuery.twFile.js
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jQuery plugin for loading a file and saving data to a file
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Copyright (c) UnaMesa Association 2009
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Triple licensed under the BSD, MIT and GPL licenses:
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http://www.opensource.org/licenses/bsd-license.php
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http://www.opensource.org/licenses/mit-license.php
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http://www.gnu.org/licenses/gpl.html
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*/
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(function($) {
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if(!$.twFile) {
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$.twFile = {};
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}
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$.extend($.twFile,{
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currentDriver: null,
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driverList: ["tiddlySaver", "activeX","javaLiveConnect", "mozilla"],
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// Loads the contents of a text file from the local file system
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// filePath is the path to the file in these formats:
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// x:\path\path\path\filename - PC local file
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// \\server\share\path\path\path\filename - PC network file
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// /path/path/path/filename - Mac/Unix local file
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// returns the text of the file, or null if the operation cannot be performed or false if there was an error
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load: function(filePath) {
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var d = this.getDriver();
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return d ? d.loadFile(filePath) : null;
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},
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// Saves a string to a text file on the local file system
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// filePath is the path to the file in the format described above
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// content is the string to save
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// returns true if the file was saved successfully, or null if the operation cannot be performed or false if there was an error
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save: function(filePath,content) {
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var d = this.getDriver();
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return d ? d.saveFile(filePath,content) : null;
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},
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// Copies a file on the local file system
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// dest is the path to the destination file in the format described above
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// source is the path to the source file in the format described above
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// returns true if the file was copied successfully, or null if the operation cannot be performed or false if there was an error
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copy: function(dest,source) {
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var d = this.getDriver();
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if(d && d.copyFile)
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return d.copyFile(dest,source);
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else
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return null;
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},
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// Converts a local file path from the format returned by document.location into the format expected by this plugin
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// url is the original URL of the file
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// returns the equivalent local file path
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convertUriToLocalPath: function (url) {
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// Remove any location or query part of the URL
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var originalPath = url.split("#")[0].split("?")[0];
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// Convert file://localhost/ to file:///
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if(originalPath.indexOf("file://localhost/") == 0)
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originalPath = "file://" + originalPath.substr(16);
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// Convert to a native file format
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//# "file:///x:/path/path/path..." - pc local file --> "x:\path\path\path..."
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//# "file://///server/share/path/path/path..." - FireFox pc network file --> "\\server\share\path\path\path..."
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//# "file:///path/path/path..." - mac/unix local file --> "/path/path/path..."
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//# "file://server/share/path/path/path..." - pc network file --> "\\server\share\path\path\path..."
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var localPath;
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if(originalPath.charAt(9) == ":") // PC local file
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localPath = unescape(originalPath.substr(8)).replace(new RegExp("/","g"),"\\");
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else if(originalPath.indexOf("file://///") == 0) // Firefox PC network file
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localPath = "\\\\" + unescape(originalPath.substr(10)).replace(new RegExp("/","g"),"\\");
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else if(originalPath.indexOf("file:///") == 0) // Mac/UNIX local file
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localPath = unescape(originalPath.substr(7));
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else if(originalPath.indexOf("file:/") == 0) // Mac/UNIX local file
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localPath = unescape(originalPath.substr(5));
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else if(originalPath.indexOf("//") == 0) // PC network file
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localPath = "\\\\" + unescape(originalPath.substr(7)).replace(new RegExp("/","g"),"\\");
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return localPath || originalPath;
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},
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// Deferred initialization for any drivers that need it
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// returns a Deferred object so callback that executes as soon
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// as twFile is ready can be attached
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initialize: function() {
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return $.Deferred(function(dfd) {
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for(var t in drivers) {
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if(drivers[t].deferredInit)
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drivers[t].deferredInit();
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}
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// Kludge: give the <applet> some time to load
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setTimeout(dfd.resolve, 0);
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});
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},
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// Private functions
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// Returns a reference to the current driver
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getDriver: function() {
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if(this.currentDriver === null) {
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for(var t=0; t<this.driverList.length; t++) {
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if(this.currentDriver === null && drivers[this.driverList[t]].isAvailable && drivers[this.driverList[t]].isAvailable())
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this.currentDriver = drivers[this.driverList[t]];
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}
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}
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return this.currentDriver;
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}
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});
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// Automatically initialize on document.ready()
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$(function() {
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$.twFile.initialize();
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});
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// Private driver implementations for each browser
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var drivers = {};
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// Internet Explorer driver
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drivers.activeX = {
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name: "activeX",
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isAvailable: function() {
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try {
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var fso = new ActiveXObject("Scripting.FileSystemObject");
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} catch(ex) {
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return false;
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}
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return true;
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},
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loadFile: function(filePath) {
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// Returns null if it can't do it, false if there's an error, or a string of the content if successful
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try {
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var fso = new ActiveXObject("Scripting.FileSystemObject");
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var file = fso.OpenTextFile(filePath,1);
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var content = file.ReadAll();
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file.Close();
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} catch(ex) {
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//# alert("Exception while attempting to load\n\n" + ex.toString());
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return null;
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}
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return content;
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},
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createPath: function(path) {
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//# Remove the filename, if present. Use trailing slash (i.e. "foo\bar\") if no filename.
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var pos = path.lastIndexOf("\\");
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if(pos!=-1)
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path = path.substring(0,pos+1);
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//# Walk up the path until we find a folder that exists
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var scan = [path];
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try {
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var fso = new ActiveXObject("Scripting.FileSystemObject");
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var parent = fso.GetParentFolderName(path);
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while(parent && !fso.FolderExists(parent)) {
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scan.push(parent);
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parent = fso.GetParentFolderName(parent);
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}
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//# Walk back down the path, creating folders
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for(i=scan.length-1;i>=0;i--) {
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if(!fso.FolderExists(scan[i])) {
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fso.CreateFolder(scan[i]);
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}
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}
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return true;
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} catch(ex) {
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}
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return false;
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},
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copyFile: function(dest,source) {
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drivers.activeX.createPath(dest);
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try {
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var fso = new ActiveXObject("Scripting.FileSystemObject");
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fso.GetFile(source).Copy(dest);
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} catch(ex) {
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return false;
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}
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return true;
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},
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saveFile: function(filePath,content) {
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// Returns null if it can't do it, false if there's an error, true if it saved OK
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drivers.activeX.createPath(filePath);
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try {
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var fso = new ActiveXObject("Scripting.FileSystemObject");
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var file = fso.OpenTextFile(filePath,2,-1,0);
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file.Write(content);
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file.Close();
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} catch (ex) {
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return null;
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}
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return true;
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}
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};
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// Mozilla driver
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drivers.mozilla = {
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name: "mozilla",
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isAvailable: function() {
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return !!window.Components;
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},
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loadFile: function(filePath) {
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// Returns null if it can't do it, false if there's an error, or a string of the content if successful
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if(window.Components) {
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try {
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netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
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var file = Components.classes["@mozilla.org/file/local;1"].createInstance(Components.interfaces.nsILocalFile);
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file.initWithPath(filePath);
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if(!file.exists())
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return null;
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var inputStream = Components.classes["@mozilla.org/network/file-input-stream;1"].createInstance(Components.interfaces.nsIFileInputStream);
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inputStream.init(file,0x01,00004,null);
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var sInputStream = Components.classes["@mozilla.org/scriptableinputstream;1"].createInstance(Components.interfaces.nsIScriptableInputStream);
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sInputStream.init(inputStream);
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var contents = sInputStream.read(sInputStream.available());
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sInputStream.close();
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inputStream.close();
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return contents;
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} catch(ex) {
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//# alert("Exception while attempting to load\n\n" + ex);
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return false;
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}
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}
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return null;
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},
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saveFile: function(filePath,content) {
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// Returns null if it can't do it, false if there's an error, true if it saved OK
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if(window.Components) {
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try {
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netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
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var file = Components.classes["@mozilla.org/file/local;1"].createInstance(Components.interfaces.nsILocalFile);
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file.initWithPath(filePath);
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if(!file.exists())
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file.create(0,0664);
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var out = Components.classes["@mozilla.org/network/file-output-stream;1"].createInstance(Components.interfaces.nsIFileOutputStream);
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out.init(file,0x20|0x02,00004,null);
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out.write(content,content.length);
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out.flush();
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out.close();
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return true;
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} catch(ex) {
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alert("Exception while attempting to save\n\n" + ex);
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return false;
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}
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}
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return null;
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}
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};
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// TiddlySaver driver
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drivers.tiddlySaver = {
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name: "tiddlySaver",
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deferredInit: function() {
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if(!document.applets["TiddlySaver"] && /* !$.browser.mozilla && !$.browser.msie && */ document.location.toString().substr(0,5) == "file:") {
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$(document.body).append("<applet style='position:absolute;left:-1px' name='TiddlySaver' code='TiddlySaver.class' archive='TiddlySaver.jar' width='1'height='1'></applet>");
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}
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},
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isAvailable: function() {
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var isReady = false;
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try {
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isReady = !!document.applets["TiddlySaver"] &&
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($.browser.msie || document.applets["TiddlySaver"].isActive) &&
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( document.applets["TiddlySaver"].isActive() );
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} catch (ex) {
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isReady = false;
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}
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return isReady;
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},
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loadFile: function(filePath) {
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var r;
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try {
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if(document.applets["TiddlySaver"]) {
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r = document.applets["TiddlySaver"].loadFile(javaUrlToFilename(filePath),"UTF-8");
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return (r === undefined || r === null) ? null : String(r);
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}
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} catch(ex) {
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}
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return null;
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},
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saveFile: function(filePath,content) {
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try {
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if(document.applets["TiddlySaver"])
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return document.applets["TiddlySaver"].saveFile(javaUrlToFilename(filePath),"UTF-8",content);
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} catch(ex) {
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}
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return null;
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}
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};
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// Java LiveConnect driver
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drivers.javaLiveConnect = {
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name: "javaLiveConnect",
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isAvailable: function() {
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return !!window.java && !!window.java.io && !!window.java.io.FileReader;
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},
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loadFile: function(filePath) {
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var r;
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var content = [];
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try {
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r = new java.io.BufferedReader(new java.io.FileReader(javaUrlToFilename(filePath)));
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var line;
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while((line = r.readLine()) != null)
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content.push(new String(line));
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r.close();
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} catch(ex) {
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return null;
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}
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return content.join("\n") + "\n";
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},
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saveFile: function(filePath,content) {
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try {
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var s = new java.io.PrintStream(new java.io.FileOutputStream(javaUrlToFilename(filePath)));
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s.print(content);
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s.close();
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} catch(ex) {
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return null;
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}
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return true;
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}
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};
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// Private utilities
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function javaUrlToFilename(url) {
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var f = "//localhost";
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if(url.indexOf(f) == 0)
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return url.substring(f.length);
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var i = url.indexOf(":");
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return i > 0 ? url.substring(i-1) : url;
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}
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})(jQuery);
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