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[HTML5] Refactor JS, threads support, closures.
- Refactored the Engine code, splitted across files. - Use MODULARIZE option to build emscripten code into it's own closure. - Optional closure compiler run for JS and generated code. - Enable lto support (saves ~2MiB in release). - Can now build with tools=yes (not much to see yet). - Dropped some deprecated code for older toolchains. - Add onExit, and onExecute JS function. - Add files drag and drop support. - Add support for low precessor usage mode (via offscreen render, swap).
This commit is contained in:
Fabio Alessandrelli
204
platform/javascript/native/utils.js
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204
platform/javascript/native/utils.js
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/*************************************************************************/
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/* utils.js */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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Module['copyToFS'] = function(path, buffer) {
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var p = path.lastIndexOf("/");
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var dir = "/";
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if (p > 0) {
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dir = path.slice(0, path.lastIndexOf("/"));
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}
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try {
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FS.stat(dir);
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} catch (e) {
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if (e.errno !== ERRNO_CODES.ENOENT) { // 'ENOENT', see https://github.com/emscripten-core/emscripten/blob/master/system/lib/libc/musl/arch/emscripten/bits/errno.h
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throw e;
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}
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FS.mkdirTree(dir);
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}
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// With memory growth, canOwn should be false.
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FS.writeFile(path, new Uint8Array(buffer), {'flags': 'wx+'});
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}
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Module.drop_handler = (function() {
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var upload = [];
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var uploadPromises = [];
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var uploadCallback = null;
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function readFilePromise(entry, path) {
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return new Promise(function(resolve, reject) {
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entry.file(function(file) {
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var reader = new FileReader();
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reader.onload = function() {
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var f = {
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"path": file.relativePath || file.webkitRelativePath,
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"name": file.name,
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"type": file.type,
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"size": file.size,
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"data": reader.result
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};
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if (!f['path'])
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f['path'] = f['name'];
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upload.push(f);
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resolve()
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};
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reader.onerror = function() {
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console.log("Error reading file");
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reject();
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}
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reader.readAsArrayBuffer(file);
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}, function(err) {
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console.log("Error!");
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reject();
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});
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});
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}
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function readDirectoryPromise(entry) {
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return new Promise(function(resolve, reject) {
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var reader = entry.createReader();
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reader.readEntries(function(entries) {
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for (var i = 0; i < entries.length; i++) {
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var ent = entries[i];
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if (ent.isDirectory) {
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uploadPromises.push(readDirectoryPromise(ent));
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} else if (ent.isFile) {
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uploadPromises.push(readFilePromise(ent));
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}
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}
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resolve();
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});
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});
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}
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function processUploadsPromises(resolve, reject) {
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if (uploadPromises.length == 0) {
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resolve();
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return;
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}
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uploadPromises.pop().then(function() {
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setTimeout(function() {
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processUploadsPromises(resolve, reject);
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//processUploadsPromises.bind(null, resolve, reject)
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}, 0);
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});
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}
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function dropFiles(files) {
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var args = files || [];
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var argc = args.length;
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var argv = stackAlloc((argc + 1) * 4);
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for (var i = 0; i < argc; i++) {
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HEAP32[(argv >> 2) + i] = allocateUTF8OnStack(args[i]);
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}
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HEAP32[(argv >> 2) + argc] = 0;
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// Defined in javascript_main.cpp
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ccall('_drop_files_callback', 'void', ['number', 'number'], [argv, argc]);
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}
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return function(ev) {
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ev.preventDefault();
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if (ev.dataTransfer.items) {
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// Use DataTransferItemList interface to access the file(s)
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for (var i = 0; i < ev.dataTransfer.items.length; i++) {
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const item = ev.dataTransfer.items[i];
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var entry = null;
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if ("getAsEntry" in item) {
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entry = item.getAsEntry();
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} else if ("webkitGetAsEntry" in item) {
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entry = item.webkitGetAsEntry();
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}
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if (!entry) {
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console.error("File upload not supported");
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} else if (entry.isDirectory) {
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uploadPromises.push(readDirectoryPromise(entry));
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} else if (entry.isFile) {
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uploadPromises.push(readFilePromise(entry));
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} else {
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console.error("Unrecognized entry...", entry);
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}
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}
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} else {
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console.error("File upload not supported");
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}
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uploadCallback = new Promise(processUploadsPromises).then(function() {
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const DROP = "/tmp/drop-" + parseInt(Math.random() * Math.pow(2, 31)) + "/";
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var drops = [];
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var files = [];
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upload.forEach((elem) => {
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var path = elem['path'];
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Module['copyToFS'](DROP + path, elem['data']);
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var idx = path.indexOf("/");
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if (idx == -1) {
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// Root file
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drops.push(DROP + path);
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} else {
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// Subdir
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var sub = path.substr(0, idx);
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idx = sub.indexOf("/");
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if (idx < 0 && drops.indexOf(DROP + sub) == -1) {
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drops.push(DROP + sub);
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}
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}
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files.push(DROP + path);
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});
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uploadPromises = [];
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upload = [];
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dropFiles(drops);
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var dirs = [DROP.substr(0, DROP.length -1)];
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files.forEach(function (file) {
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FS.unlink(file);
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var dir = file.replace(DROP, "");
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var idx = dir.lastIndexOf("/");
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while (idx > 0) {
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dir = dir.substr(0, idx);
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if (dirs.indexOf(DROP + dir) == -1) {
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dirs.push(DROP + dir);
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}
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idx = dir.lastIndexOf("/");
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}
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});
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// Remove dirs.
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dirs = dirs.sort(function(a, b) {
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var al = (a.match(/\//g) || []).length;
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var bl = (b.match(/\//g) || []).length;
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if (al > bl)
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return -1;
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else if (al < bl)
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return 1;
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return 0;
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});
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dirs.forEach(function(dir) {
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FS.rmdir(dir);
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});
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});
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}
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})();
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