mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-12-25 09:30:28 +00:00
3f478f5689
@linonetwo I realised on review that we refer to boot.files as the "tiddler file info"
166 lines
5.3 KiB
JavaScript
166 lines
5.3 KiB
JavaScript
/*\
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title: $:/plugins/tiddlywiki/filesystem/filesystemadaptor.js
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type: application/javascript
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module-type: syncadaptor
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A sync adaptor module for synchronising with the local filesystem via node.js APIs
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\*/
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(function(){
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/*jslint node: true, browser: true */
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/*global $tw: false */
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"use strict";
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// Get a reference to the file system
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var fs = $tw.node ? require("fs") : null,
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path = $tw.node ? require("path") : null;
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function FileSystemAdaptor(options) {
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var self = this;
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this.wiki = options.wiki;
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this.boot = options.boot || $tw.boot;
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this.logger = new $tw.utils.Logger("filesystem",{colour: "blue"});
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// Create the <wiki>/tiddlers folder if it doesn't exist
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$tw.utils.createDirectory(this.boot.wikiTiddlersPath);
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}
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FileSystemAdaptor.prototype.name = "filesystem";
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FileSystemAdaptor.prototype.supportsLazyLoading = false;
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FileSystemAdaptor.prototype.isReady = function() {
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// The file system adaptor is always ready
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return true;
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};
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FileSystemAdaptor.prototype.getTiddlerInfo = function(tiddler) {
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//Returns the existing fileInfo for the tiddler. To regenerate, call getTiddlerFileInfo().
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var title = tiddler.fields.title;
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return this.boot.files[title];
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};
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/*
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Return a fileInfo object for a tiddler, creating it if necessary:
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filepath: the absolute path to the file containing the tiddler
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type: the type of the tiddler file (NOT the type of the tiddler -- see below)
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hasMetaFile: true if the file also has a companion .meta file
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The boot process populates this.boot.files for each of the tiddler files that it loads.
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The type is found by looking up the extension in $tw.config.fileExtensionInfo (eg "application/x-tiddler" for ".tid" files).
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It is the responsibility of the filesystem adaptor to update this.boot.files for new files that are created.
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*/
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FileSystemAdaptor.prototype.getTiddlerFileInfo = function(tiddler,callback) {
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// Always generate a fileInfo object when this fuction is called
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var title = tiddler.fields.title, newInfo, pathFilters, extFilters,
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fileInfo = this.boot.files[title];
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if(this.wiki.tiddlerExists("$:/config/FileSystemPaths")) {
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pathFilters = this.wiki.getTiddlerText("$:/config/FileSystemPaths","").split("\n");
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}
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if(this.wiki.tiddlerExists("$:/config/FileSystemExtensions")) {
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extFilters = this.wiki.getTiddlerText("$:/config/FileSystemExtensions","").split("\n");
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}
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newInfo = $tw.utils.generateTiddlerFileInfo(tiddler,{
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directory: this.boot.wikiTiddlersPath,
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pathFilters: pathFilters,
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extFilters: extFilters,
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wiki: this.wiki,
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fileInfo: fileInfo
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});
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callback(null,newInfo);
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};
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/*
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Save a tiddler and invoke the callback with (err,adaptorInfo,revision)
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*/
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FileSystemAdaptor.prototype.saveTiddler = function(tiddler,callback,options) {
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var self = this;
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var syncerInfo = options.tiddlerInfo || {};
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this.getTiddlerFileInfo(tiddler,function(err,fileInfo) {
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if(err) {
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return callback(err);
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}
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$tw.utils.saveTiddlerToFile(tiddler,fileInfo,function(err,fileInfo) {
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if(err) {
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if ((err.code == "EPERM" || err.code == "EACCES") && err.syscall == "open") {
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fileInfo = fileInfo || self.boot.files[tiddler.fields.title];
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fileInfo.writeError = true;
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self.boot.files[tiddler.fields.title] = fileInfo;
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$tw.syncer.logger.log("Sync failed for \""+tiddler.fields.title+"\" and will be retried with encoded filepath",encodeURIComponent(fileInfo.filepath));
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return callback(err);
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} else {
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return callback(err);
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}
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}
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// Store new boot info only after successful writes
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self.boot.files[tiddler.fields.title] = fileInfo;
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// Cleanup duplicates if the file moved or changed extensions
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var options = {
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adaptorInfo: syncerInfo.adaptorInfo || {},
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bootInfo: fileInfo || {},
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title: tiddler.fields.title
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};
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$tw.utils.cleanupTiddlerFiles(options,function(err,fileInfo) {
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if(err) {
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return callback(err);
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}
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return callback(null,fileInfo);
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});
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});
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});
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};
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/*
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Load a tiddler and invoke the callback with (err,tiddlerFields)
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We don't need to implement loading for the file system adaptor, because all the tiddler files will have been loaded during the boot process.
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*/
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FileSystemAdaptor.prototype.loadTiddler = function(title,callback) {
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callback(null,null);
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};
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/*
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Delete a tiddler and invoke the callback with (err)
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*/
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FileSystemAdaptor.prototype.deleteTiddler = function(title,callback,options) {
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var self = this,
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fileInfo = this.boot.files[title];
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// Only delete the tiddler if we have writable information for the file
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if(fileInfo) {
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$tw.utils.deleteTiddlerFile(fileInfo,function(err,fileInfo) {
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if(err) {
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if ((err.code == "EPERM" || err.code == "EACCES") && err.syscall == "unlink") {
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// Error deleting the file on disk, should fail gracefully
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$tw.syncer.displayError("Server desynchronized. Error deleting file for deleted tiddler \"" + title + "\"",err);
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return callback(null,fileInfo);
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} else {
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return callback(err);
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}
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}
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// Remove the tiddler from self.boot.files & return null adaptorInfo
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self.removeTiddlerFileInfo(title);
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return callback(null,null);
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});
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} else {
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callback(null,null);
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}
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};
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/*
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Delete a tiddler in cache, without modifying file system.
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*/
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FileSystemAdaptor.prototype.removeTiddlerFileInfo = function(title) {
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// Only delete the tiddler info if we have writable information for the file
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if(this.boot.files[title]) {
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delete this.boot.files[title];
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};
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};
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if(fs) {
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exports.adaptorClass = FileSystemAdaptor;
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}
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})();
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