stephan
e145136a4e
FossilOrigin-Name: 6044605b2a712da73600cabb967797a03ed1915dc0ab0b10edbd52525e548196
101 lines
4.0 KiB
JavaScript
101 lines
4.0 KiB
JavaScript
/*
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2022-05-22
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The author disclaims copyright to this source code. In place of a
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legal notice, here is a blessing:
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* May you do good and not evil.
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* May you find forgiveness for yourself and forgive others.
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* May you share freely, never taking more than you give.
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***********************************************************************
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This file contains bootstrapping code used by various test scripts
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which live in this file's directory.
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*/
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(function(){
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/* querySelectorAll() proxy */
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const EAll = function(/*[element=document,] cssSelector*/){
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return (arguments.length>1 ? arguments[0] : document)
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.querySelectorAll(arguments[arguments.length-1]);
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};
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/* querySelector() proxy */
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const E = function(/*[element=document,] cssSelector*/){
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return (arguments.length>1 ? arguments[0] : document)
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.querySelector(arguments[arguments.length-1]);
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};
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/* emscripten-related bits... */
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const statusElement = E('#module-status');
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const progressElement = E('#module-progress');
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const spinnerElement = E('#module-spinner');
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self.Module = {
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/* ^^^ cannot declare that const because sqlite3.js
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(auto-generated) includes a decl for it and runs in this
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scope. */
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preRun: [],
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postRun: [],
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//onRuntimeInitialized: function(){},
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print: function(){
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console.log.apply(console, Array.prototype.slice.call(arguments));
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},
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printErr: function(){
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console.error.apply(console, Array.prototype.slice.call(arguments));
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},
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setStatus: function f(text){
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if(!f.last) f.last = { time: Date.now(), text: '' };
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if(text === f.last.text) return;
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const m = text.match(/([^(]+)\((\d+(\.\d+)?)\/(\d+)\)/);
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const now = Date.now();
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if(m && now - f.last.time < 30) return; // if this is a progress update, skip it if too soon
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f.last.time = now;
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f.last.text = text;
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if(m) {
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text = m[1];
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progressElement.value = parseInt(m[2])*100;
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progressElement.max = parseInt(m[4])*100;
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progressElement.hidden = false;
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spinnerElement.hidden = false;
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} else {
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progressElement.remove();
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if(!text) spinnerElement.remove();
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}
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if(text) statusElement.innerText = text;
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else statusElement.remove();
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},
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totalDependencies: 0,
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monitorRunDependencies: function(left) {
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this.totalDependencies = Math.max(this.totalDependencies, left);
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this.setStatus(left
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? ('Preparing... (' + (this.totalDependencies-left)
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+ '/' + this.totalDependencies + ')')
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: 'All downloads complete.');
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},
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/* Loads sqlite3-api.js and calls the given callback (if
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provided), passing it an object which contains the sqlite3
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and SQLite3 modules. Whether this is synchronous or async
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depends on whether it's run in the main thread (async) or a
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worker (synchronous). */
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loadSqliteAPI: function(callback){
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const theScript = 'sqlite3-api.js';
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if(self.importScripts){/*worker*/
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importScripts(theScript);
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if(callback) callback(self.sqlite3);
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}else{/*main thread*/
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new Promise((resolve, reject) => {
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const script = document.createElement('script');
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document.body.appendChild(script);
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script.onload = resolve;
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script.onerror = reject;
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script.async = true;
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script.src = theScript;
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}).then(() => {
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if(callback) callback({sqlite3:self.sqlite3,
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SQLite3:self.SQLite3});
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});
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}
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}
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};
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})(self/*window or worker*/);
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