mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-11-14 05:44:50 +00:00
348 lines
10 KiB
JavaScript
348 lines
10 KiB
JavaScript
/*\
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title: $:/plugins/tiddlywiki/multiwikiserver/store/sql-tiddler-store.js
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type: application/javascript
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module-type: library
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Higher level functions to perform basic tiddler operations with a sqlite3 database.
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This class is largely a wrapper for the sql-tiddler-database.js class, adding the following functionality:
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* Validating requests (eg bag and recipe name constraints)
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* Synchronising bag and recipe names to the admin wiki
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* Handling large tiddlers as attachments
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\*/
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(function() {
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/*
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Create a tiddler store. Options include:
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databasePath - path to the database file (can be ":memory:" to get a temporary database)
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adminWiki - reference to $tw.Wiki object used for configuration
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attachmentStore - reference to associated attachment store
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engine - wasm | better
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*/
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function SqlTiddlerStore(options) {
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options = options || {};
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this.attachmentStore = options.attachmentStore;
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this.adminWiki = options.adminWiki || $tw.wiki;
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// Create the database
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this.databasePath = options.databasePath || ":memory:";
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var SqlTiddlerDatabase = require("$:/plugins/tiddlywiki/multiwikiserver/store/sql-tiddler-database.js").SqlTiddlerDatabase;
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this.sqlTiddlerDatabase = new SqlTiddlerDatabase({
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databasePath: this.databasePath,
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engine: options.engine
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});
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this.sqlTiddlerDatabase.createTables();
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}
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/*
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Returns null if a bag/recipe name is valid, or a string error message if not
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*/
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SqlTiddlerStore.prototype.validateItemName = function(name) {
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if(typeof name !== "string") {
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return "Not a valid string";
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}
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if(name.length > 256) {
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return "Too long";
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}
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// Removed ~ from this list temporarily
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if(!(/^[^\s\u00A0\x00-\x1F\x7F`!@#$%^&*()+={}\[\];:\'\"<>.,\/\\\?]+$/g.test(name))) {
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return "Invalid character(s)";
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}
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return null;
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};
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/*
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Returns null if the argument is an array of valid bag/recipe names, or a string error message if not
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*/
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SqlTiddlerStore.prototype.validateItemNames = function(names) {
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if(!$tw.utils.isArray(names)) {
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return "Not a valid array";
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}
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var errors = [];
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for(const name of names) {
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const result = this.validateItemName(name);
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if(result) {
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errors.push(result);
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}
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}
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if(errors.length === 0) {
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return null;
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} else {
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return errors.join("\n");
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}
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};
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SqlTiddlerStore.prototype.close = function() {
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this.sqlTiddlerDatabase.close();
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this.sqlTiddlerDatabase = undefined;
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};
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/*
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Given tiddler fields, tiddler_id and a bag_name, return the tiddler fields after the following process:
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- Apply the tiddler_id as the revision field
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- Apply the bag_name as the bag field
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*/
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SqlTiddlerStore.prototype.processOutgoingTiddler = function(tiddlerFields,tiddler_id,bag_name,attachment_blob) {
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if(attachment_blob !== null) {
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return $tw.utils.extend(
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{},
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tiddlerFields,
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{
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text: undefined,
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_canonical_uri: `/bags/${encodeURIComponent(bag_name)}/tiddlers/${encodeURIComponent(tiddlerFields.title)}/blob`
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}
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);
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} else {
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return tiddlerFields;
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}
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};
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/*
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*/
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SqlTiddlerStore.prototype.processIncomingTiddler = function(tiddlerFields) {
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let attachmentSizeLimit = $tw.utils.parseNumber(this.adminWiki.getTiddlerText("$:/config/MultiWikiServer/AttachmentSizeLimit"));
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if(attachmentSizeLimit < 100 * 1024) {
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attachmentSizeLimit = 100 * 1024;
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}
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const contentTypeInfo = $tw.config.contentTypeInfo[tiddlerFields.type || "text/vnd.tiddlywiki"],
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isBinary = !!contentTypeInfo && contentTypeInfo.encoding === "base64";
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if(isBinary && tiddlerFields.text && tiddlerFields.text.length > attachmentSizeLimit) {
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const attachment_blob = this.attachmentStore.saveAttachment({
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text: tiddlerFields.text,
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type: tiddlerFields.type,
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reference: tiddlerFields.title
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});
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return {
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tiddlerFields: Object.assign({},tiddlerFields,{text: undefined}),
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attachment_blob: attachment_blob
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};
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} else {
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return {
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tiddlerFields: tiddlerFields,
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attachment_blob: null
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};
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}
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};
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SqlTiddlerStore.prototype.saveTiddlersFromPath = function(tiddler_files_path,bag_name) {
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var self = this;
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this.sqlTiddlerDatabase.transaction(function() {
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// Clear out the bag
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self.deleteAllTiddlersInBag(bag_name);
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// Get the tiddlers
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var path = require("path");
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var tiddlersFromPath = $tw.loadTiddlersFromPath(path.resolve($tw.boot.corePath,$tw.config.editionsPath,tiddler_files_path));
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// Save the tiddlers
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for(const tiddlersFromFile of tiddlersFromPath) {
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for(const tiddler of tiddlersFromFile.tiddlers) {
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self.saveBagTiddler(tiddler,bag_name,null);
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}
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}
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});
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};
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SqlTiddlerStore.prototype.listBags = function() {
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return this.sqlTiddlerDatabase.listBags();
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};
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SqlTiddlerStore.prototype.createBag = function(bag_name,description) {
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var self = this;
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return this.sqlTiddlerDatabase.transaction(function() {
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const validationBagName = self.validateItemName(bag_name);
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if(validationBagName) {
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return {message: validationBagName};
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}
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self.sqlTiddlerDatabase.createBag(bag_name,description);
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return null;
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});
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};
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SqlTiddlerStore.prototype.listRecipes = function() {
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return this.sqlTiddlerDatabase.listRecipes();
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};
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/*
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Returns null on success, or {message:} on error
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*/
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SqlTiddlerStore.prototype.createRecipe = function(recipe_name,bag_names,description) {
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bag_names = bag_names || [];
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description = description || "";
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const validationRecipeName = this.validateItemName(recipe_name);
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if(validationRecipeName) {
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return {message: validationRecipeName};
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}
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const validationBagNames = this.validateItemNames(bag_names);
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if(validationBagNames) {
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return {message: validationBagNames};
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}
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if(bag_names.length === 0) {
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return {message: "Recipes must contain at least one bag"};
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}
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var self = this;
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return this.sqlTiddlerDatabase.transaction(function() {
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self.sqlTiddlerDatabase.createRecipe(recipe_name,bag_names,description);
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return null;
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});
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};
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/*
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Returns {tiddler_id:}
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*/
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SqlTiddlerStore.prototype.saveBagTiddler = function(incomingTiddlerFields,bag_name) {
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const {tiddlerFields, attachment_blob} = this.processIncomingTiddler(incomingTiddlerFields);
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return this.sqlTiddlerDatabase.saveBagTiddler(tiddlerFields,bag_name,attachment_blob);
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};
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/*
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Create a tiddler in a bag adopting the specified file as the attachment. The attachment file must be on the same disk as the attachment store
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Options include:
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filepath - filepath to the attachment file
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hash - string hash of the attachment file
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type - content type of file as uploaded
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Returns {tiddler_id:}
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*/
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SqlTiddlerStore.prototype.saveBagTiddlerWithAttachment = function(incomingTiddlerFields,bag_name,options) {
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const attachment_blob = this.attachmentStore.adoptAttachment(options.filepath,options.type,options.hash);
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if(attachment_blob) {
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return this.sqlTiddlerDatabase.saveBagTiddler(incomingTiddlerFields,bag_name,attachment_blob);
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} else {
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return null;
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}
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};
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/*
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Returns {tiddler_id:,bag_name:}
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*/
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SqlTiddlerStore.prototype.saveRecipeTiddler = function(incomingTiddlerFields,recipe_name) {
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const {tiddlerFields, attachment_blob} = this.processIncomingTiddler(incomingTiddlerFields);
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return this.sqlTiddlerDatabase.saveRecipeTiddler(tiddlerFields,recipe_name,attachment_blob);
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};
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SqlTiddlerStore.prototype.deleteTiddler = function(title,bag_name) {
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return this.sqlTiddlerDatabase.deleteTiddler(title,bag_name);
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};
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/*
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returns {tiddler_id:,tiddler:}
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*/
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SqlTiddlerStore.prototype.getBagTiddler = function(title,bag_name) {
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var tiddlerInfo = this.sqlTiddlerDatabase.getBagTiddler(title,bag_name);
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if(tiddlerInfo) {
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return Object.assign(
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{},
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tiddlerInfo,
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{
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tiddler: this.processOutgoingTiddler(tiddlerInfo.tiddler,tiddlerInfo.tiddler_id,bag_name,tiddlerInfo.attachment_blob)
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});
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} else {
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return null;
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}
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};
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/*
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Get an attachment ready to stream. Returns null if there is an error or:
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tiddler_id: revision of tiddler
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stream: stream of file
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type: type of file
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Returns {tiddler_id:,bag_name:}
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*/
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SqlTiddlerStore.prototype.getBagTiddlerStream = function(title,bag_name) {
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const tiddlerInfo = this.sqlTiddlerDatabase.getBagTiddler(title,bag_name);
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if(tiddlerInfo) {
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if(tiddlerInfo.attachment_blob) {
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return $tw.utils.extend(
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{},
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this.attachmentStore.getAttachmentStream(tiddlerInfo.attachment_blob),
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{
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tiddler_id: tiddlerInfo.tiddler_id
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}
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);
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} else {
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const { Readable } = require('stream');
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const stream = new Readable();
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stream._read = function() {
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// Push data
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const type = tiddlerInfo.tiddler.type || "text/plain";
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stream.push(tiddlerInfo.tiddler.text || "",($tw.config.contentTypeInfo[type] ||{encoding: "utf8"}).encoding);
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// Push null to indicate the end of the stream
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stream.push(null);
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};
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return {
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tiddler_id: tiddlerInfo.tiddler_id,
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bag_name: bag_name,
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stream: stream,
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type: tiddlerInfo.tiddler.type || "text/plain"
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}
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}
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} else {
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return null;
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}
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};
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/*
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Returns {bag_name:, tiddler: {fields}, tiddler_id:}
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*/
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SqlTiddlerStore.prototype.getRecipeTiddler = function(title,recipe_name) {
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var tiddlerInfo = this.sqlTiddlerDatabase.getRecipeTiddler(title,recipe_name);
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if(tiddlerInfo) {
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return Object.assign(
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{},
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tiddlerInfo,
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{
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tiddler: this.processOutgoingTiddler(tiddlerInfo.tiddler,tiddlerInfo.tiddler_id,tiddlerInfo.bag_name,tiddlerInfo.attachment_blob)
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});
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} else {
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return null;
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}
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};
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/*
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Get the titles of the tiddlers in a bag. Returns an empty array for bags that do not exist
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*/
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SqlTiddlerStore.prototype.getBagTiddlers = function(bag_name) {
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return this.sqlTiddlerDatabase.getBagTiddlers(bag_name);
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};
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/*
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Get the tiddler_id of the newest tiddler in a bag. Returns null for bags that do not exist
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*/
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SqlTiddlerStore.prototype.getBagLastTiddlerId = function(bag_name) {
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return this.sqlTiddlerDatabase.getBagLastTiddlerId(bag_name);
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};
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/*
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Get the titles of the tiddlers in a recipe as {title:,bag_name:}. Returns null for recipes that do not exist
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*/
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SqlTiddlerStore.prototype.getRecipeTiddlers = function(recipe_name,options) {
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return this.sqlTiddlerDatabase.getRecipeTiddlers(recipe_name,options);
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};
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/*
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Get the tiddler_id of the newest tiddler in a recipe. Returns null for recipes that do not exist
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*/
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SqlTiddlerStore.prototype.getRecipeLastTiddlerId = function(recipe_name) {
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return this.sqlTiddlerDatabase.getRecipeLastTiddlerId(recipe_name);
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};
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SqlTiddlerStore.prototype.deleteAllTiddlersInBag = function(bag_name) {
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var self = this;
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return this.sqlTiddlerDatabase.transaction(function() {
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return self.sqlTiddlerDatabase.deleteAllTiddlersInBag(bag_name);
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});
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};
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/*
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Get the names of the bags in a recipe. Returns an empty array for recipes that do not exist
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*/
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SqlTiddlerStore.prototype.getRecipeBags = function(recipe_name) {
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return this.sqlTiddlerDatabase.getRecipeBags(recipe_name);
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};
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exports.SqlTiddlerStore = SqlTiddlerStore;
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})(); |