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ESM: Added Hex ops and created a Hex library.

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This commit is contained in:
n1474335 2018-04-02 18:06:48 +01:00
parent 0011e9caa8
commit eeb1d0a891
18 changed files with 391 additions and 196 deletions
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96
src/core/Utils.mjs
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@ -7,6 +7,7 @@
import utf8 from "utf8";
import moment from "moment-timezone";
import {fromBase64} from "./lib/Base64";
import {toHexFast, fromHex} from "./lib/Hex";
/**
@ -312,7 +313,7 @@ class Utils {
static convertToByteArray(str, type) {
switch (type.toLowerCase()) {
case "hex":
return Utils.fromHex(str);
return fromHex(str);
case "base64":
return fromBase64(str, null, "byteArray");
case "utf8":
@ -345,7 +346,7 @@ class Utils {
static convertToByteString(str, type) {
switch (type.toLowerCase()) {
case "hex":
return Utils.byteArrayToChars(Utils.fromHex(str));
return Utils.byteArrayToChars(fromHex(str));
case "base64":
return Utils.byteArrayToChars(fromBase64(str, null, "byteArray"));
case "utf8":
@ -519,95 +520,6 @@ class Utils {
}
/**
* Convert a byte array into a hex string.
*
* @param {Uint8Array|byteArray} data
* @param {string} [delim=" "]
* @param {number} [padding=2]
* @returns {string}
*
* @example
* // returns "0a 14 1e"
* Utils.toHex([10,20,30]);
*
* // returns "0a:14:1e"
* Utils.toHex([10,20,30], ":");
*/
static toHex(data, delim=" ", padding=2) {
if (!data) return "";
let output = "";
for (let i = 0; i < data.length; i++) {
output += data[i].toString(16).padStart(padding, "0") + delim;
}
// Add \x or 0x to beginning
if (delim === "0x") output = "0x" + output;
if (delim === "\\x") output = "\\x" + output;
if (delim.length)
return output.slice(0, -delim.length);
else
return output;
}
/**
* Convert a byte array into a hex string as efficiently as possible with no options.
*
* @param {byteArray} data
* @returns {string}
*
* @example
* // returns "0a141e"
* Utils.toHex([10,20,30]);
*/
static toHexFast(data) {
if (!data) return "";
const output = [];
for (let i = 0; i < data.length; i++) {
output.push((data[i] >>> 4).toString(16));
output.push((data[i] & 0x0f).toString(16));
}
return output.join("");
}
/**
* Convert a hex string into a byte array.
*
* @param {string} data
* @param {string} [delim]
* @param {number} [byteLen=2]
* @returns {byteArray}
*
* @example
* // returns [10,20,30]
* Utils.fromHex("0a 14 1e");
*
* // returns [10,20,30]
* Utils.fromHex("0a:14:1e", "Colon");
*/
static fromHex(data, delim, byteLen=2) {
delim = delim || (data.indexOf(" ") >= 0 ? "Space" : "None");
if (delim !== "None") {
const delimRegex = Utils.regexRep(delim);
data = data.replace(delimRegex, "");
}
const output = [];
for (let i = 0; i < data.length; i += byteLen) {
output.push(parseInt(data.substr(i, byteLen), 16));
}
return output;
}
/**
* Parses CSV data and returns it as a two dimensional array or strings.
*
@ -944,7 +856,7 @@ class Utils {
title='Download ${Utils.escapeHtml(file.fileName)}'
download='${Utils.escapeHtml(file.fileName)}'>&#x1f4be;</a>`;
const hexFileData = Utils.toHexFast(new Uint8Array(file.bytes));
const hexFileData = toHexFast(new Uint8Array(file.bytes));
const switchToInputElem = `<a href='#switchFileToInput${i}'
class='file-switch'