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Move base64-binary to storage

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Andrei Andreev 2022-02-06 19:35:05 +03:00
parent 81698281a4
commit a5d195a3ee
4 changed files with 97 additions and 98 deletions
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93
javascripts/core/storage/base64-binary.js Normal file
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@ -0,0 +1,93 @@
/* eslint-disable no-bitwise,no-param-reassign */
// Copyright (c) 2011, Daniel Guerrero
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL DANIEL GUERRERO BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
/**
* Uses the new array typed in javascript to binary base64 encode/decode
* at the moment just decodes a binary base64 encoded
* into either an ArrayBuffer (decodeArrayBuffer)
* or into an Uint8Array (decode)
*
* References:
* https://developer.mozilla.org/en/JavaScript_typed_arrays/ArrayBuffer
* https://developer.mozilla.org/en/JavaScript_typed_arrays/Uint8Array
*/
const keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
/* Will return a Uint8Array type */
export function decodeArrayBuffer(input) {
const bytes = (input.length / 4) * 3;
const ab = new ArrayBuffer(bytes);
decodeBase64Binary(input, ab);
return ab;
}
function removePaddingChars(input) {
const lkey = keyStr.indexOf(input.charAt(input.length - 1));
if (lkey === 64) {
return input.substring(0, input.length - 1);
}
return input;
}
export function decodeBase64Binary(input, arrayBuffer) {
// Get last chars to see if are valid
input = removePaddingChars(input);
input = removePaddingChars(input);
const bytes = parseInt((input.length / 4) * 3, 10);
let array;
let chr1, chr2, chr3;
let enc1, enc2, enc3, enc4;
let i = 0;
let j = 0;
if (arrayBuffer)
array = new Uint8Array(arrayBuffer);
else
array = new Uint8Array(bytes);
input = input.replace(/[^A-Za-z0-9+/=]/gu, "");
for (i = 0; i < bytes; i += 3) {
// Get the 3 octects in 4 ascii chars
enc1 = keyStr.indexOf(input.charAt(j++));
enc2 = keyStr.indexOf(input.charAt(j++));
enc3 = keyStr.indexOf(input.charAt(j++));
enc4 = keyStr.indexOf(input.charAt(j++));
chr1 = (enc1 << 2) | (enc2 >> 4);
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
chr3 = ((enc3 & 3) << 6) | enc4;
array[i] = chr1;
if (enc3 !== 64) array[i + 1] = chr2;
if (enc4 !== 64) array[i + 2] = chr3;
}
return array;
}

5
javascripts/core/storage/cloud-saving.js
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@ -1,5 +1,6 @@
import { ProgressChecker } from "./progress-checker.js";
import pako from "pako/dist/pako.esm.mjs";
import { decodeBase64Binary } from "./base64-binary";
import { ProgressChecker } from "./progress-checker.js";
const firebaseConfig = {
apiKey: "AIzaSyDuRTTluAFufmvw1zxGH6fsyEHmmbu8IHI",
@ -34,7 +35,7 @@ export const Cloud = {
const snapshot = await this.db.ref(`users/${this.user.id}/player`).get();
if (snapshot.exists) {
const encoded = snapshot.val();
const uintArray = Base64Binary.decode(encoded.replace(/-/gu, "+").replace(/_/gu, "/"));
const uintArray = decodeBase64Binary(encoded.replace(/-/gu, "+").replace(/_/gu, "/"));
const save = pako.ungzip(uintArray, { to: "string" });
// TODO: do something with this.
JSON.parse(save);

3
public/index.html
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@ -65,14 +65,13 @@
<script src="https://www.gstatic.com/firebasejs/8.8.0/firebase-database.js"></script>
<script type="text/javascript" src="lib/vue.js"></script>
<script type="text/javascript" src="lib/deepmerge.js"></script>
<script type="text/javascript" src="../javascripts/core/storage/deepmerge.js"></script>
<script type="text/javascript" src="lib/codemirror.js"></script>
<script type="text/javascript" src="lib/simple.js"></script>
<script type="text/javascript" src="lib/show-hint.js"></script>
<script type="text/javascript" src="lib/lint.js"></script>
<script type="text/javascript" src="lib/active-line.js"></script>
<script type="text/javascript" src="lib/closebrackets.js"></script>
<script type="text/javascript" src="lib/base64-binary.js"></script>
<script type="text/javascript" src="lib/DragDropTouch.js"></script>
<script type="text/javascript" src="lib/longpress.js"></script>

94
public/lib/base64-binary.js
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@ -1,94 +0,0 @@
/*
Copyright (c) 2011, Daniel Guerrero
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL DANIEL GUERRERO BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* Uses the new array typed in javascript to binary base64 encode/decode
* at the moment just decodes a binary base64 encoded
* into either an ArrayBuffer (decodeArrayBuffer)
* or into an Uint8Array (decode)
*
* References:
* https://developer.mozilla.org/en/JavaScript_typed_arrays/ArrayBuffer
* https://developer.mozilla.org/en/JavaScript_typed_arrays/Uint8Array
*/
var Base64Binary = {
_keyStr : "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
/* will return a Uint8Array type */
decodeArrayBuffer: function(input) {
var bytes = (input.length/4) * 3;
var ab = new ArrayBuffer(bytes);
this.decode(input, ab);
return ab;
},
removePaddingChars: function(input){
var lkey = this._keyStr.indexOf(input.charAt(input.length - 1));
if(lkey == 64){
return input.substring(0,input.length - 1);
}
return input;
},
decode: function (input, arrayBuffer) {
//get last chars to see if are valid
input = this.removePaddingChars(input);
input = this.removePaddingChars(input);
var bytes = parseInt((input.length / 4) * 3, 10);
var uarray;
var chr1, chr2, chr3;
var enc1, enc2, enc3, enc4;
var i = 0;
var j = 0;
if (arrayBuffer)
uarray = new Uint8Array(arrayBuffer);
else
uarray = new Uint8Array(bytes);
input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
for (i=0; i<bytes; i+=3) {
//get the 3 octects in 4 ascii chars
enc1 = this._keyStr.indexOf(input.charAt(j++));
enc2 = this._keyStr.indexOf(input.charAt(j++));
enc3 = this._keyStr.indexOf(input.charAt(j++));
enc4 = this._keyStr.indexOf(input.charAt(j++));
chr1 = (enc1 << 2) | (enc2 >> 4);
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
chr3 = ((enc3 & 3) << 6) | enc4;
uarray[i] = chr1;
if (enc3 != 64) uarray[i+1] = chr2;
if (enc4 != 64) uarray[i+2] = chr3;
}
return uarray;
}
}