hexlook
v1.0.0
Published
Dumps data in hexadecimal format. Provides a single function to take an array of bytes and display it in hexadecimal form.
Downloads
2
Maintainers
takuya-motoshimaReadme
hexlook
Dumps data in hexadecimal format.
Provides a single function to take an array of bytes and display it in hexadecimal form.
Install
npm i hexlookUsage
For ESM
import hexlook from 'hexlook';For CJS
const hexlook = require('hexlook');string
// Output: 00000000 59 65 61 68 2c 20 69 74 27 73 20 6d 79 20 6c 69 |Yeah, it's my li|
// 00000010 66 65 2e 20 4d 79 20 6f 77 6e 20 77 6f 72 64 73 |fe. My own words|
// 00000020 2c 20 49 67 75 65 73 73 2e |, Iguess.|
const payload = 'Yeah, it\'s my life. My own words, Iguess.';
const dump = hexlook(payload);
console.log(dump);Get only hex columns in one row
// 596561682c2069742773206d79206c6966652e204d79206f776e20776f7264732c204967756573732e
const payload = 'Yeah, it\'s my life. My own words, Iguess.';
const dump = hexlook(payload, {
hexBlock: payload.length,
hexGroup: 1,
hexSep: '',
offsetShow: false,
asciiShow: false
});
console.log(dump);0 byte
// Output: ''
const payload = [];
const dump = hexlook(Buffer.from(payload));
console.log(dump);8 bytes
// Output: 00000000 01 02 03 04 05 06 07 08 |........|
const payload = [0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08];
const dump = hexlook(Buffer.from(payload));
console.log(dump);16 bytes w/ whale
// Output: 00000000 00 00 00 00 00 00 77 68 61 6c 65 00 00 00 00 00 |......whale.....|
const payload = [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x77, 0x68, 0x61, 0x6c, 0x65, 0x00, 0x00, 0x00, 0x00, 0x00];
const dump = hexlook(Buffer.from(payload));
console.log(dump);24 bytes w/ whale & octopus
// Output: 00000000 00 00 00 00 00 00 77 68 61 6c 65 00 00 00 00 00 |......whale.....|
// 00000010 00 6f 63 74 6f 70 75 73 |.octopus|
const payload = [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x77, 0x68, 0x61, 0x6c, 0x65, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x6f, 0x63, 0x74, 0x6f, 0x70, 0x75, 0x73];
const dump = hexlook(Buffer.from(payload));
console.log(dump);asciiNull works
// Output: 00000000 |empty|
const payload = [];
const dump = hexlook(Buffer.from(payload), {asciiNull: 'empty'});
console.log(dump);hex(24 bytes w/ whale & octopus + asciiRender option)
// Output: 00000000 00 00 00 00 00 00 77 68 61 6c 65 00 00 00 00 00 |whale|
// 00000010 00 6f 63 74 6f 70 75 73 |octopus|
const payload = [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x77, 0x68, 0x61, 0x6c, 0x65, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x6f, 0x63, 0x74, 0x6f, 0x70, 0x75, 0x73];
const dump = hexlook(Buffer.from(payload), {
// Convert unicode to characters.
asciiRender: byte => {
if (byte > 0x1f && byte < 0x7f)
return String.fromCharCode(byte);
else
return '';
}
});
console.log(dump);24 bytes w/ whale & octopus + offsetWidth option
// Output: 00 00 00 00 00 00 00 77 68 61 6c 65 00 00 00 00 00 |......whale.....|
// 10 00 6f 63 74 6f 70 75 73 |.octopus|
const payload = [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x77, 0x68, 0x61, 0x6c, 0x65, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x6f, 0x63, 0x74, 0x6f, 0x70, 0x75, 0x73];
const dump = hexlook(Buffer.from(payload), {offsetWidth: 2});
console.log(dump);Passing undefined parameter will result in an error
// Output: payload is unknown
try {
const payload = undefined;
hexlook(payload);
} catch(err) {
console.error(err.message);
}Passing null parameter will result in an error
// Output: payload is unknown
try {
const payload = null;
hexlook(payload);
} catch(err) {
console.error(err.message);
}Passing numeric parameter will result in an error
// Output: payload is unknown
try {
const payload = 123;
hexlook(payload);
} catch(err) {
console.error(err.message);
}Passing array parameter will result in an error
// Output: payload is unknown
try {
const payload = [];
hexlook(payload);
} catch(err) {
console.error(err.message);
}Passing object parameter will result in an error
// Output: payload is unknown
try {
const payload = {};
hexlook(payload);
} catch(err) {
console.error(err.message);
}Options
Author
Takuya Motoshima