mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-07-06 04:03:16 +00:00
418 lines
12 KiB
JavaScript
418 lines
12 KiB
JavaScript
/*\
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title: $:/plugins/tiddlywiki/sqlite3store/sql-wiki-store.js
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type: application/javascript
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A sqlite3 implementation of a wiki store object
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This file is spliced into the HTML file to be executed before the boot kernel has been loaded.
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\*/
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(function() {
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$tw.Wiki = function(options) {
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// Create a test database and store and retrieve some data
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var db = new $tw.sqlite3.oo1.DB("/tiddlywiki.sqlite3","ct");
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db.exec({
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sql:"CREATE TABLE IF NOT EXISTS t(a,b)"
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});
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db.exec({
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sql: "insert into t(a,b) values (?,?)",
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bind: [3, 1415926]
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});
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db.exec({
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sql: "insert into t(a,b) values (?,?)",
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bind: [1, 4142136]
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});
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let resultRows = [];
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db.exec({
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sql: "select a, b from t order by a limit 3",
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rowMode: "object",
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resultRows: resultRows
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});
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console.log("Result rows:",JSON.stringify(resultRows,undefined,2));
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// Basic tiddler operations
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db.exec({
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sql: "CREATE TABLE IF NOT EXISTS tiddlers (title TEXT PRIMARY KEY,meta TEXT,text TEXT)"
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});
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function sqlSaveTiddler(tiddlerFields) {
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db.exec({
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sql: "replace into tiddlers(title,meta,text) values ($title,$meta,$text)",
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bind: {
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$title: tiddlerFields.title,
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$meta: JSON.stringify(Object.assign({},tiddlerFields,{title: undefined, text: undefined})),
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$text: tiddlerFields.text || ""
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}
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});
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}
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function sqlGetTiddler(title) {
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let resultRows = [];
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db.exec({
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sql: "select title, meta, text from tiddlers where title = $title",
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bind: {
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$title: title
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},
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rowMode: "object",
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resultRows: resultRows
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});
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if(resultRows.length > 0) {
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return Object.assign({},JSON.parse(resultRows[0].meta),{title: resultRows[0].title, text: resultRows[0].text});
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} else {
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return undefined;
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}
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}
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function sqlAllTitles() {
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let resultRows = [];
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db.exec({
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sql: "select title from tiddlers order by title",
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rowMode: "object",
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resultRows: resultRows
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});
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return resultRows;
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}
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sqlSaveTiddler({title: "HelloThere", text: "One"});
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console.log(sqlGetTiddler("HelloThere"));
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sqlSaveTiddler({title: "HelloThere", text: "Two", custom: "A custom field"});
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console.log(sqlGetTiddler("HelloThere"));
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sqlSaveTiddler({title: "AnotherTiddler", text: "Three"});
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console.log(sqlAllTitles());
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// Plain JS wiki store implementation follows
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options = options || {};
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var self = this,
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tiddlers = Object.create(null), // Hashmap of tiddlers
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getTiddlerTitles = function() {
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return Object.keys(tiddlers).sort(function(a,b) {return a.localeCompare(b);});
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},
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pluginTiddlers = [], // Array of tiddlers containing registered plugins, ordered by priority
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pluginInfo = Object.create(null), // Hashmap of parsed plugin content
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shadowTiddlers = Object.create(null), // Hashmap by title of {source:, tiddler:}
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getShadowTiddlerTitles = function() {
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return Object.keys(shadowTiddlers);
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};
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//$tw.utils replacements
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var eachObj = function(object,callback) {
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var next,f,length;
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if(object) {
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if(Object.prototype.toString.call(object) == "[object Array]") {
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for (f=0, length=object.length; f<length; f++) {
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next = callback(object[f],f,object);
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if(next === false) {
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break;
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}
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}
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} else {
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var keys = Object.keys(object);
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for (f=0, length=keys.length; f<length; f++) {
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var key = keys[f];
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next = callback(object[key],key,object);
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if(next === false) {
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break;
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}
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}
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}
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}
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},
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hop = function(object,property) {
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return object ? Object.prototype.hasOwnProperty.call(object,property) : false;
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},
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insertSortedArray = function(array,value) {
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var low = 0, high = array.length - 1, mid, cmp;
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while(low <= high) {
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mid = (low + high) >> 1;
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cmp = value.localeCompare(array[mid]);
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if(cmp > 0) {
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low = mid + 1;
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} else if(cmp < 0) {
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high = mid - 1;
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} else {
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return array;
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}
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}
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array.splice(low,0,value);
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return array;
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},
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parseJSONSafe = function(text,defaultJSON) {
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try {
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return JSON.parse(text);
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} catch(e) {
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if(typeof defaultJSON === "function") {
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return defaultJSON(e);
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} else {
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return defaultJSON || {};
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}
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}
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};
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this.addIndexer = function(indexer,name) {
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return;
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};
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this.getIndexer = function(name) {
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return null;
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};
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// Add a tiddler to the store
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this.addTiddler = function(tiddler) {
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if(!(tiddler instanceof $tw.Tiddler)) {
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tiddler = new $tw.Tiddler(tiddler);
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}
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// Save the tiddler
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if(tiddler) {
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var title = tiddler.fields.title;
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if(title) {
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// Save the new tiddler
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tiddlers[title] = tiddler;
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// Update caches
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this.clearCache(title);
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this.clearGlobalCache();
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// Queue a change event
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this.enqueueTiddlerEvent(title);
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}
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}
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};
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// Delete a tiddler
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this.deleteTiddler = function(title) {
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// Uncomment the following line for detailed logs of all tiddler deletions
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// console.log("Deleting",title)
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if(hop(tiddlers,title)) {
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// Delete the tiddler
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delete tiddlers[title];
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// Update caches
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this.clearCache(title);
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this.clearGlobalCache();
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// Queue a change event
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this.enqueueTiddlerEvent(title,true);
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}
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};
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// Get a tiddler from the store
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this.getTiddler = function(title) {
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if(title) {
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var t = tiddlers[title];
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if(t !== undefined) {
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return t;
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} else {
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var s = shadowTiddlers[title];
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if(s !== undefined) {
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return s.tiddler;
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}
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}
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}
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return undefined;
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};
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// Get an array of all tiddler titles
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this.allTitles = function() {
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return getTiddlerTitles();
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};
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// Iterate through all tiddler titles
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this.each = function(callback) {
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var titles = getTiddlerTitles(),
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index,titlesLength,title;
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for(index = 0, titlesLength = titles.length; index < titlesLength; index++) {
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title = titles[index];
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callback(self.getTiddler(title),title);
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}
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};
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// Get an array of all shadow tiddler titles
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this.allShadowTitles = function() {
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return getShadowTiddlerTitles();
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};
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// Iterate through all shadow tiddler titles
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this.eachShadow = function(callback) {
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var titles = getShadowTiddlerTitles(),
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index,titlesLength,title;
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for(index = 0, titlesLength = titles.length; index < titlesLength; index++) {
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title = titles[index];
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if(self.tiddlerExists(title)) {
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callback(self.getTiddler(title),title);
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} else {
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var shadowInfo = shadowTiddlers[title];
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callback(shadowInfo.tiddler,title);
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}
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}
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};
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// Iterate through all tiddlers and then the shadows
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this.eachTiddlerPlusShadows = function(callback) {
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var index,titlesLength,title,
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titles = getTiddlerTitles();
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for(index = 0, titlesLength = titles.length; index < titlesLength; index++) {
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title = titles[index];
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callback(self.getTiddler(title),title);
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}
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titles = getShadowTiddlerTitles();
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for(index = 0, titlesLength = titles.length; index < titlesLength; index++) {
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title = titles[index];
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if(!self.tiddlerExists(title)) {
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var shadowInfo = shadowTiddlers[title];
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callback(shadowInfo.tiddler,title);
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}
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}
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};
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// Iterate through all the shadows and then the tiddlers
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this.eachShadowPlusTiddlers = function(callback) {
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var index,titlesLength,title,
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titles = getShadowTiddlerTitles();
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for(index = 0, titlesLength = titles.length; index < titlesLength; index++) {
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title = titles[index];
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if(self.tiddlerExists(title)) {
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callback(self.getTiddler(title),title);
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} else {
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var shadowInfo = shadowTiddlers[title];
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callback(shadowInfo.tiddler,title);
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}
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}
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titles = getTiddlerTitles();
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for(index = 0, titlesLength = titles.length; index < titlesLength; index++) {
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title = titles[index];
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if(!shadowTiddlers[title]) {
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callback(self.getTiddler(title),title);
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}
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}
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};
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this.tiddlerExists = function(title) {
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return !!hop(tiddlers,title);
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};
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this.isShadowTiddler = function(title) {
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return hop(shadowTiddlers,title);
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};
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this.getShadowSource = function(title) {
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if(hop(shadowTiddlers,title)) {
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return shadowTiddlers[title].source;
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}
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return null;
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};
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// Get an array of all the currently recognised plugin types
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this.getPluginTypes = function() {
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var types = [];
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eachObj(pluginTiddlers,function(pluginTiddler) {
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var pluginType = pluginTiddler.fields["plugin-type"];
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if(pluginType && types.indexOf(pluginType) === -1) {
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types.push(pluginType);
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}
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});
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return types;
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};
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// Read plugin info for all plugins, or just an array of titles. Returns the number of plugins updated or deleted
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this.readPluginInfo = function(titles) {
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var results = {
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modifiedPlugins: [],
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deletedPlugins: []
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};
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eachObj(titles || getTiddlerTitles(),function(title) {
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var tiddler = self.getTiddler(title);
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if(tiddler) {
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if(tiddler.fields.type === "application/json" && tiddler.hasField("plugin-type") && tiddler.fields.text) {
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pluginInfo[tiddler.fields.title] = parseJSONSafe(tiddler.fields.text);
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results.modifiedPlugins.push(tiddler.fields.title);
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}
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} else {
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if(pluginInfo[title]) {
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delete pluginInfo[title];
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results.deletedPlugins.push(title);
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}
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}
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});
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return results;
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};
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// Get plugin info for a plugin
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this.getPluginInfo = function(title) {
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return pluginInfo[title];
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};
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// Register the plugin tiddlers of a particular type, or null/undefined for any type, optionally restricting registration to an array of tiddler titles. Return the array of titles affected
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this.registerPluginTiddlers = function(pluginType,titles) {
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var self = this,
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registeredTitles = [],
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checkTiddler = function(tiddler,title) {
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if(tiddler && tiddler.fields.type === "application/json" && tiddler.fields["plugin-type"] && (!pluginType || tiddler.fields["plugin-type"] === pluginType)) {
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var disablingTiddler = self.getTiddler("$:/config/Plugins/Disabled/" + title);
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if(title === "$:/core" || !disablingTiddler || (disablingTiddler.fields.text || "").trim() !== "yes") {
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self.unregisterPluginTiddlers(null,[title]); // Unregister the plugin if it's already registered
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pluginTiddlers.push(tiddler);
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registeredTitles.push(tiddler.fields.title);
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}
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}
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};
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if(titles) {
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eachObj(titles,function(title) {
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checkTiddler(self.getTiddler(title),title);
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});
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} else {
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this.each(function(tiddler,title) {
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checkTiddler(tiddler,title);
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});
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}
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return registeredTitles;
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};
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// Unregister the plugin tiddlers of a particular type, or null/undefined for any type, optionally restricting unregistering to an array of tiddler titles. Returns an array of the titles affected
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this.unregisterPluginTiddlers = function(pluginType,titles) {
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var self = this,
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unregisteredTitles = [];
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// Remove any previous registered plugins of this type
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for(var t=pluginTiddlers.length-1; t>=0; t--) {
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var tiddler = pluginTiddlers[t];
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if(tiddler.fields["plugin-type"] && (!pluginType || tiddler.fields["plugin-type"] === pluginType) && (!titles || titles.indexOf(tiddler.fields.title) !== -1)) {
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unregisteredTitles.push(tiddler.fields.title);
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pluginTiddlers.splice(t,1);
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}
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}
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return unregisteredTitles;
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};
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// Unpack the currently registered plugins, creating shadow tiddlers for their constituent tiddlers
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this.unpackPluginTiddlers = function() {
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var self = this;
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// Sort the plugin titles by the `plugin-priority` field
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pluginTiddlers.sort(function(a,b) {
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if("plugin-priority" in a.fields && "plugin-priority" in b.fields) {
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return a.fields["plugin-priority"] - b.fields["plugin-priority"];
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} else if("plugin-priority" in a.fields) {
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return -1;
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} else if("plugin-priority" in b.fields) {
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return +1;
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} else if(a.fields.title < b.fields.title) {
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return -1;
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} else if(a.fields.title === b.fields.title) {
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return 0;
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} else {
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return +1;
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}
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});
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// Now go through the plugins in ascending order and assign the shadows
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shadowTiddlers = Object.create(null);
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eachObj(pluginTiddlers,function(tiddler) {
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// Extract the constituent tiddlers
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if(hop(pluginInfo,tiddler.fields.title)) {
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eachObj(pluginInfo[tiddler.fields.title].tiddlers,function(constituentTiddler,constituentTitle) {
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// Save the tiddler object
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if(constituentTitle) {
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shadowTiddlers[constituentTitle] = {
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source: tiddler.fields.title,
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tiddler: new $tw.Tiddler(constituentTiddler,{title: constituentTitle})
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};
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}
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});
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}
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});
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shadowTiddlerTitles = null;
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this.clearCache(null);
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this.clearGlobalCache();
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};
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};
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})();
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//# sourceURL=$:/plugins/tiddlywiki/sqlite3store/sql-wiki-store.js
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