mirrors/CyberChef
1
0
Fork 0
mirror of https://github.com/gchq/CyberChef.git synced 2025-05-10 00:05:11 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

[#913] added groupings to hex dump

Browse source
This commit is contained in:
j83305 2020-05-31 15:52:32 +01:00
parent 11c2bae53d
commit 150e66fc99
1 changed files with 15 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

17
src/core/operations/ToHexdump.mjs
View file

@ -5,6 +5,7 @@
*/ */
import Operation from "../Operation.mjs"; import Operation from "../Operation.mjs";
import OperationError from "../errors/OperationError.mjs";
import Utils from "../Utils.mjs"; import Utils from "../Utils.mjs";
/** /**
@ -39,6 +40,11 @@ class ToHexdump extends Operation {
"name": "Include final length", "name": "Include final length",
"type": "boolean", "type": "boolean",
"value": false "value": false
},
{
"name": "Output grouping",
"type": "number",
"value": 1
} }
]; ];
} }
@ -52,13 +58,20 @@ class ToHexdump extends Operation {
const data = new Uint8Array(input); const data = new Uint8Array(input);
const [length, upperCase, includeFinalLength] = args; const [length, upperCase, includeFinalLength] = args;
const padding = 2; const padding = 2;
const groupSize = args[3] || 1;
if (length%groupSize !== 0){
throw new OperationError("The value of the width parameter must be divisible by the value of the output grouping parameter");
}
let output = ""; let output = "";
for (let i = 0; i < data.length; i += length) { for (let i = 0; i < data.length; i += length) {
const buff = data.slice(i, i+length); const buff = data.slice(i, i+length);
let hexa = ""; let hexa = "";
for (let j = 0; j < buff.length; j++) { for (let j = 0; j < buff.length; j++) {
hexa += Utils.hex(buff[j], padding) + " "; hexa += Utils.hex(buff[j], padding);
if (groupSize === 1 || (j > 0 && (j+1)%groupSize === 0)){
hexa += " ";
}
} }
let lineNo = Utils.hex(i, 8); let lineNo = Utils.hex(i, 8);
@ -69,7 +82,7 @@ class ToHexdump extends Operation {
} }
output += lineNo + " " + output += lineNo + " " +
hexa.padEnd(length*(padding+1), " ") + hexa.padEnd(length*padding+(length/groupSize), " ") +
" |" + Utils.printable(Utils.byteArrayToChars(buff)).padEnd(buff.length, " ") + "|\n"; " |" + Utils.printable(Utils.byteArrayToChars(buff)).padEnd(buff.length, " ") + "|\n";
if (includeFinalLength && i+buff.length === data.length) { if (includeFinalLength && i+buff.length === data.length) {