1 |
|
2 |
|
3 |
|
4 |
|
5 |
|
6 | "use strict";
|
7 |
|
8 | const arraySum = array => {
|
9 | let sum = 0;
|
10 | for (const item of array) sum += item;
|
11 | return sum;
|
12 | };
|
13 |
|
14 |
|
15 |
|
16 |
|
17 |
|
18 |
|
19 | const truncateArgs = (args, maxLength) => {
|
20 | const lengths = args.map(a => `${a}`.length);
|
21 | const availableLength = maxLength - lengths.length + 1;
|
22 |
|
23 | if (availableLength > 0 && args.length === 1) {
|
24 | if (availableLength >= args[0].length) {
|
25 | return args;
|
26 | } else if (availableLength > 3) {
|
27 | return ["..." + args[0].slice(-availableLength + 3)];
|
28 | } else {
|
29 | return [args[0].slice(-availableLength)];
|
30 | }
|
31 | }
|
32 |
|
33 |
|
34 | if (availableLength < arraySum(lengths.map(i => Math.min(i, 6)))) {
|
35 |
|
36 | if (args.length > 1)
|
37 | return truncateArgs(args.slice(0, args.length - 1), maxLength);
|
38 | return [];
|
39 | }
|
40 |
|
41 | let currentLength = arraySum(lengths);
|
42 |
|
43 |
|
44 | if (currentLength <= availableLength) return args;
|
45 |
|
46 |
|
47 | while (currentLength > availableLength) {
|
48 | const maxLength = Math.max(...lengths);
|
49 | const shorterItems = lengths.filter(l => l !== maxLength);
|
50 | const nextToMaxLength =
|
51 | shorterItems.length > 0 ? Math.max(...shorterItems) : 0;
|
52 | const maxReduce = maxLength - nextToMaxLength;
|
53 | let maxItems = lengths.length - shorterItems.length;
|
54 | let overrun = currentLength - availableLength;
|
55 | for (let i = 0; i < lengths.length; i++) {
|
56 | if (lengths[i] === maxLength) {
|
57 | const reduce = Math.min(Math.floor(overrun / maxItems), maxReduce);
|
58 | lengths[i] -= reduce;
|
59 | currentLength -= reduce;
|
60 | overrun -= reduce;
|
61 | maxItems--;
|
62 | }
|
63 | }
|
64 | }
|
65 |
|
66 |
|
67 | return args.map((a, i) => {
|
68 | const str = `${a}`;
|
69 | const length = lengths[i];
|
70 | if (str.length === length) {
|
71 | return str;
|
72 | } else if (length > 5) {
|
73 | return "..." + str.slice(-length + 3);
|
74 | } else if (length > 0) {
|
75 | return str.slice(-length);
|
76 | } else {
|
77 | return "";
|
78 | }
|
79 | });
|
80 | };
|
81 |
|
82 | module.exports = truncateArgs;
|