This should be made available in emscripten in a decent way. Possibly after unmount, to free the database lock and allow performing operations on it from javascript after the Emscripten Runtime has exited.
292 lines
8.5 KiB
JavaScript
292 lines
8.5 KiB
JavaScript
/*************************************************************************/
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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['initFS'] = function(persistentPaths) {
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Module.mount_points = ['/userfs'].concat(persistentPaths);
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function createRecursive(dir) {
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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) {
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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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}
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Module.mount_points.forEach(function(path) {
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createRecursive(path);
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FS.mount(IDBFS, {}, path);
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});
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return new Promise(function(resolve, reject) {
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FS.syncfs(true, function(err) {
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if (err) {
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Module.mount_points = [];
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Module.idbfs = false;
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console.log("IndexedDB not available: " + err.message);
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} else {
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Module.idbfs = true;
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}
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resolve(err);
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});
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});
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};
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Module['deinitFS'] = function() {
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Module.mount_points.forEach(function(path) {
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try {
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FS.unmount(path);
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} catch (e) {
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console.log("Already unmounted", e);
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}
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if (Module.idbfs && IDBFS.dbs[path]) {
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IDBFS.dbs[path].close();
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delete IDBFS.dbs[path];
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}
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});
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Module.mount_points = [];
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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) {
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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 display_server_javascript.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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function EventHandlers() {
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function Handler(target, event, method, capture) {
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this.target = target;
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this.event = event;
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this.method = method;
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this.capture = capture;
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}
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var listeners = [];
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function has(target, event, method, capture) {
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return listeners.findIndex(function(e) {
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return e.target === target && e.event === event && e.method === method && e.capture == capture;
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}) !== -1;
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}
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this.add = function(target, event, method, capture) {
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if (has(target, event, method, capture)) {
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return;
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}
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listeners.push(new Handler(target, event, method, capture));
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target.addEventListener(event, method, capture);
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};
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this.remove = function(target, event, method, capture) {
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if (!has(target, event, method, capture)) {
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return;
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}
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target.removeEventListener(event, method, capture);
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};
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this.clear = function() {
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listeners.forEach(function(h) {
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h.target.removeEventListener(h.event, h.method, h.capture);
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});
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listeners.length = 0;
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};
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}
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Module.listeners = new EventHandlers();
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