b38dea0597
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
108 lines
3.1 KiB
JavaScript
Executable file
108 lines
3.1 KiB
JavaScript
Executable file
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
'use strict';
|
|
|
|
/* exported
|
|
StringConversion
|
|
*/
|
|
|
|
const StringConversion = Object.freeze((() => {
|
|
|
|
return {
|
|
rawStringToUint8Array(str) {
|
|
if (typeof str != 'string') {
|
|
throw new Error('Not a string');
|
|
}
|
|
const strLen = str.length;
|
|
var byteArray = new Uint8Array(strLen);
|
|
for (var i = 0; i < strLen; i++) {
|
|
byteArray[i] = str.charCodeAt(i);
|
|
}
|
|
return byteArray;
|
|
},
|
|
|
|
stringToUtf8Uint8Array(str) {
|
|
if (typeof str != 'string') {
|
|
throw new Error('Not a string');
|
|
}
|
|
var string = unescape(encodeURIComponent(str)),
|
|
charList = string.split(''),
|
|
uintArray = [];
|
|
for (var i = 0; i < charList.length; i++) {
|
|
uintArray.push(charList[i].charCodeAt(0));
|
|
}
|
|
return new Uint8Array(uintArray);
|
|
},
|
|
|
|
base64StringToUint8Array(base64) {
|
|
if (typeof base64 != 'string' || base64.length % 4 !== 0) {
|
|
throw new Error(`Number of base64 digits must be a multiple of 4 to con\
|
|
vert to bytes`);
|
|
}
|
|
return StringConversion.rawStringToUint8Array(window.atob(base64));
|
|
},
|
|
|
|
hexStringToUint8Array(hexStr) {
|
|
if (typeof hexStr != 'string' || hexStr.length % 2 !== 0) {
|
|
throw new Error(`Must have an even number of hex digits to convert to b\
|
|
ytes`);
|
|
}
|
|
const numBytes = hexStr.length / 2;
|
|
var byteArray = new Uint8Array(numBytes);
|
|
for (var i = 0; i < numBytes; i++) {
|
|
byteArray[i] = parseInt(hexStr.substr(i * 2, 2), 16);
|
|
}
|
|
return byteArray;
|
|
},
|
|
|
|
uint8ArrayToBase64String(bytes) {
|
|
if (!(bytes instanceof Uint8Array)) {
|
|
throw new Error('Not a Uint8Array');
|
|
}
|
|
var binary = '';
|
|
const len = bytes.byteLength;
|
|
for (var i=0; i<len; i++) {
|
|
binary += String.fromCharCode(bytes[i]);
|
|
}
|
|
return window.btoa(binary);
|
|
},
|
|
|
|
arrayBufferToBase64String(buffer) {
|
|
if (!(buffer instanceof ArrayBuffer)) {
|
|
throw new Error('Not an ArrayBuffer');
|
|
}
|
|
var bytes = new Uint8Array(buffer);
|
|
return StringConversion.uint8ArrayToBase64String(bytes);
|
|
},
|
|
|
|
utf8Uint8ArrayToString(array) {
|
|
if (!(array instanceof Uint8Array)) {
|
|
throw new Error('Not an Uint8Array');
|
|
}
|
|
var utf8_string = String.fromCharCode.apply(null, array);
|
|
return decodeURIComponent(escape(utf8_string));
|
|
},
|
|
|
|
uint8ArrayToHexString(bytes) {
|
|
if (!(bytes instanceof Uint8Array)) {
|
|
throw new Error('Not a Uint8Array');
|
|
}
|
|
var hex = '';
|
|
for (var i=0; i <bytes.length; ++i) {
|
|
const zeropad = (bytes[i] < 0x10) ? '0' : '';
|
|
hex += zeropad + bytes[i].toString(16);
|
|
}
|
|
return hex;
|
|
},
|
|
|
|
arrayBufferToHexString(buffer) {
|
|
if (!(buffer instanceof ArrayBuffer)) {
|
|
throw new Error('Not an ArrayBuffer');
|
|
}
|
|
var bytes = new Uint8Array(buffer);
|
|
return StringConversion.uint8ArrayToHexString(bytes);
|
|
}
|
|
};
|
|
})());
|