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@lcb
Last active January 31, 2023 17:22
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emojIDs

EmojID

The function emojid() deterministically converts hexadecimal strings (like sha1sum, md5sum, uuid4, uuid5) into emoji containing strings, remojid() converts back.

Implementations in Javascript and Python are provided.

What for?

¯\_(ツ)_/¯

How it works

The code will in each step

  • take the value of 2 hex chars
  • add a "magic" offset (U+1F400) to it
  • convert it to unicode

There is a bit of tolerance built in: Non hex chars will be ignored and simply be added to the result. But I wouldn't push it too hard.

Examples

md5
emojid(42eab827e162899feb01af513c39be46) =>👂📪💸🐧📡👢💉💟📫🐁💯👑🐼🐹💾👆

shasum
emojid(d50aabf4b2f62569b976a4b16d6dfc86750499a7) => 📕🐊💫📴💲📶🐥👩💹👶💤💱👭👭📼💆👵🐄💙💧

git short hash
emojid(21132ad) => 🐡🐓🐪d 

uuid4
emojid(f6e3299a-525a-4c5f-bebc-ef014b608a66) => 📶📣🐩💚-👒👚-👌👟-💾💼-📯🐁👋👠💊👦

reverse
remojid(🐡🐓🐪d) => 21132ad
function emojid(id) {
let word = '';
let res = '';
id.toLowerCase().split('').map(c => {
word += c;
if(c.search(/[0-9a-f]/) === -1) {
//flush
res += word;
word= '';
return;
}
if (word.length === 2) {
res += String.fromCodePoint(0x1F400 + parseInt(word, 16));
word = '';
}
});
return res + word;
}
function remojid(emojid) {
return [...emojid].map(c => {
const intVal = c.codePointAt(0) - 0x1F400;
const hexVal = intVal.toString(16);
const pad = hexVal.length < 2 ? '0' : '';
return intVal > 0 ? pad + hexVal : c;
}).join('');
}
console.log(emojid('6777576b-3216-444e-960b-20a07bd6c352'));
console.log(remojid(emojid('6777576b-3216-444e-960b-20a07bd6c352')));
import re
def emojid(id):
word = ''
res = ''
for c in list(id.lower()):
word += c
if re.search("[0-9a-f]", c) == None:
#flush
res += word
word = ''
continue
if (len(word) == 2):
ucode = 0x1F400 + int(word, 16)
res += unicode('\U000%x' % ucode , 'unicode-escape')
word = ''
return res + word
def remojid(emojid):
res = ''
for c in emojid:
intVal = ord(c) - 56320
if intVal == -963: continue
if intVal < 0:
res += c
continue
res += "%02x" % intVal
return res
print emojid('6777576b-3216-444e-960b-20a07bd6c352')
print remojid(emojid('6777576b-3216-444e-960b-20a07bd6c352'))
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