godot/platform/javascript/native/utils.js

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/*************************************************************************/
/* utils.js */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
Module['initFS'] = function(persistentPaths) {
FS.mkdir('/userfs');
FS.mount(IDBFS, {}, '/userfs');
function createRecursive(dir) {
try {
FS.stat(dir);
} catch (e) {
if (e.errno !== ERRNO_CODES.ENOENT) {
throw e;
}
FS.mkdirTree(dir);
}
}
persistentPaths.forEach(function(path) {
createRecursive(path);
FS.mount(IDBFS, {}, path);
});
return new Promise(function(resolve, reject) {
FS.syncfs(true, function(err) {
if (err) {
Module.idbfs = false;
console.log("IndexedDB not available: " + err.message);
} else {
Module.idbfs = true;
}
resolve(err);
});
});
};
Module['copyToFS'] = function(path, buffer) {
var p = path.lastIndexOf("/");
var dir = "/";
if (p > 0) {
dir = path.slice(0, path.lastIndexOf("/"));
}
try {
FS.stat(dir);
} catch (e) {
if (e.errno !== ERRNO_CODES.ENOENT) {
throw e;
}
FS.mkdirTree(dir);
}
// With memory growth, canOwn should be false.
FS.writeFile(path, new Uint8Array(buffer), {'flags': 'wx+'});
}
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Module.drop_handler = (function() {
var upload = [];
var uploadPromises = [];
var uploadCallback = null;
function readFilePromise(entry, path) {
return new Promise(function(resolve, reject) {
entry.file(function(file) {
var reader = new FileReader();
reader.onload = function() {
var f = {
"path": file.relativePath || file.webkitRelativePath,
"name": file.name,
"type": file.type,
"size": file.size,
"data": reader.result
};
if (!f['path'])
f['path'] = f['name'];
upload.push(f);
resolve()
};
reader.onerror = function() {
console.log("Error reading file");
reject();
}
reader.readAsArrayBuffer(file);
}, function(err) {
console.log("Error!");
reject();
});
});
}
function readDirectoryPromise(entry) {
return new Promise(function(resolve, reject) {
var reader = entry.createReader();
reader.readEntries(function(entries) {
for (var i = 0; i < entries.length; i++) {
var ent = entries[i];
if (ent.isDirectory) {
uploadPromises.push(readDirectoryPromise(ent));
} else if (ent.isFile) {
uploadPromises.push(readFilePromise(ent));
}
}
resolve();
});
});
}
function processUploadsPromises(resolve, reject) {
if (uploadPromises.length == 0) {
resolve();
return;
}
uploadPromises.pop().then(function() {
setTimeout(function() {
processUploadsPromises(resolve, reject);
//processUploadsPromises.bind(null, resolve, reject)
}, 0);
});
}
function dropFiles(files) {
var args = files || [];
var argc = args.length;
var argv = stackAlloc((argc + 1) * 4);
for (var i = 0; i < argc; i++) {
HEAP32[(argv >> 2) + i] = allocateUTF8OnStack(args[i]);
}
HEAP32[(argv >> 2) + argc] = 0;
// Defined in display_server_javascript.cpp
ccall('_drop_files_callback', 'void', ['number', 'number'], [argv, argc]);
}
return function(ev) {
ev.preventDefault();
if (ev.dataTransfer.items) {
// Use DataTransferItemList interface to access the file(s)
for (var i = 0; i < ev.dataTransfer.items.length; i++) {
const item = ev.dataTransfer.items[i];
var entry = null;
if ("getAsEntry" in item) {
entry = item.getAsEntry();
} else if ("webkitGetAsEntry" in item) {
entry = item.webkitGetAsEntry();
}
if (!entry) {
console.error("File upload not supported");
} else if (entry.isDirectory) {
uploadPromises.push(readDirectoryPromise(entry));
} else if (entry.isFile) {
uploadPromises.push(readFilePromise(entry));
} else {
console.error("Unrecognized entry...", entry);
}
}
} else {
console.error("File upload not supported");
}
uploadCallback = new Promise(processUploadsPromises).then(function() {
const DROP = "/tmp/drop-" + parseInt(Math.random() * Math.pow(2, 31)) + "/";
var drops = [];
var files = [];
upload.forEach((elem) => {
var path = elem['path'];
Module['copyToFS'](DROP + path, elem['data']);
var idx = path.indexOf("/");
if (idx == -1) {
// Root file
drops.push(DROP + path);
} else {
// Subdir
var sub = path.substr(0, idx);
idx = sub.indexOf("/");
if (idx < 0 && drops.indexOf(DROP + sub) == -1) {
drops.push(DROP + sub);
}
}
files.push(DROP + path);
});
uploadPromises = [];
upload = [];
dropFiles(drops);
var dirs = [DROP.substr(0, DROP.length -1)];
files.forEach(function (file) {
FS.unlink(file);
var dir = file.replace(DROP, "");
var idx = dir.lastIndexOf("/");
while (idx > 0) {
dir = dir.substr(0, idx);
if (dirs.indexOf(DROP + dir) == -1) {
dirs.push(DROP + dir);
}
idx = dir.lastIndexOf("/");
}
});
// Remove dirs.
dirs = dirs.sort(function(a, b) {
var al = (a.match(/\//g) || []).length;
var bl = (b.match(/\//g) || []).length;
if (al > bl)
return -1;
else if (al < bl)
return 1;
return 0;
});
dirs.forEach(function(dir) {
FS.rmdir(dir);
});
});
}
})();
function EventHandlers() {
function Handler(target, event, method, capture) {
this.target = target;
this.event = event;
this.method = method;
this.capture = capture;
}
var listeners = [];
function has(target, event, method, capture) {
return listeners.findIndex(function(e) {
return e.target === target && e.event === event && e.method === method && e.capture == capture;
}) !== -1;
}
this.add = function(target, event, method, capture) {
if (has(target, event, method, capture)) {
return;
}
listeners.push(new Handler(target, event, method, capture));
target.addEventListener(event, method, capture);
};
this.remove = function(target, event, method, capture) {
if (!has(target, event, method, capture)) {
return;
}
target.removeEventListener(event, method, capture);
};
this.clear = function() {
listeners.forEach(function(h) {
h.target.removeEventListener(h.event, h.method, h.capture);
});
listeners.length = 0;
};
}
Module.listeners = new EventHandlers();