cache-typescript-sdk
Version:
Blockstart NIS1 SDK
110 lines • 3.35 kB
JavaScript
;
/*
* The MIT License (MIT)
*
* Copyright (c) 2017 NEM
*
* 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.
*/
Object.defineProperty(exports, "__esModule", { value: true });
const utf8 = require("utf8");
/**
* Message model
*/
class Message {
/**
* @internal
* @param payload
*/
constructor(payload) {
this.payload = payload;
}
isHexMessage() {
return this.isPlain() && this.payload.indexOf("fe") === 0;
}
/**
* @internal
* @param message
* @returns {string}
*/
static encodeHex(message) {
const rawString = this.rstr2utf8(message);
let hex = "";
for (let i = 0; i < rawString.length; i++) {
hex += this.strlpad(rawString.charCodeAt(i).toString(16), "0", 2);
}
return utf8.encode(hex);
}
/**
* @internal
* @param hex
* @returns {string}
*/
static decodeHex(hex) {
let str = "";
for (let i = 0; i < hex.length; i += 2)
str += String.fromCharCode(parseInt(hex.substr(i, 2), 16));
try {
return utf8.decode(str);
}
catch (e) {
return str;
}
}
/**
* @internal
* @param input
* @returns {string}
*/
static rstr2utf8(input) {
let output = "";
for (let n = 0; n < input.length; n++) {
const c = input.charCodeAt(n);
if (c < 128) {
output += String.fromCharCode(c);
}
else if ((c > 127) && (c < 2048)) {
output += String.fromCharCode((c >> 6) | 192);
output += String.fromCharCode((c & 63) | 128);
}
else {
output += String.fromCharCode((c >> 12) | 224);
output += String.fromCharCode(((c >> 6) & 63) | 128);
output += String.fromCharCode((c & 63) | 128);
}
}
return output;
}
/**
* @internal
* Padding helper for above function
* @param str
* @param pad
* @param len
* @returns {any}
*/
static strlpad(str, pad, len) {
while (str.length < len) {
str = pad + str;
}
return str;
}
}
exports.Message = Message;
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