-
Notifications
You must be signed in to change notification settings - Fork 1
/
lib.js
41 lines (33 loc) · 1 KB
/
lib.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
// algorithm reference
// https://confluence.cc.lehigh.edu/display/LTSTS/Constructing+Cutter+Numbers
let cutterData = require("./data");
function generateCutter(lastname, firstname, args) {
let {
suffix=""
} = args || {};
firstname = firstname.toLowerCase().replace(/\W/, "");
lastname = lastname.toLowerCase().replace(/\W/, "");
let format = num => {
let ch = lastname.toUpperCase().slice(0, 1);
return `${ch}${num}${suffix}`;
}
let letters = "abcdefghijklmnopqrstuvwxyz".split("");
letters = letters.slice(0, letters.indexOf(firstname[0])+1);
for (let c of letters.reverse()) {
let key = `${lastname},${c}.`;
let num = cutterData[key];
if (num) {
return format(num);
}
}
let key = lastname;
while (key) {
let num = cutterData[key];
if (num) {
return format(num);
}
key = key.slice(0, key.length-1);
}
return "";
}
module.exports = generateCutter;