[d565449] | 1 |
|
---|
| 2 |
|
---|
| 3 |
|
---|
| 4 | /*
|
---|
| 5 | * @version 1.4.0
|
---|
| 6 | * @date 2015-10-26
|
---|
| 7 | * @stability 3 - Stable
|
---|
| 8 | * @author Lauri Rooden (https://github.com/litejs/natural-compare-lite)
|
---|
| 9 | * @license MIT License
|
---|
| 10 | */
|
---|
| 11 |
|
---|
| 12 |
|
---|
| 13 | var naturalCompare = function(a, b) {
|
---|
| 14 | var i, codeA
|
---|
| 15 | , codeB = 1
|
---|
| 16 | , posA = 0
|
---|
| 17 | , posB = 0
|
---|
| 18 | , alphabet = String.alphabet
|
---|
| 19 |
|
---|
| 20 | function getCode(str, pos, code) {
|
---|
| 21 | if (code) {
|
---|
| 22 | for (i = pos; code = getCode(str, i), code < 76 && code > 65;) ++i;
|
---|
| 23 | return +str.slice(pos - 1, i)
|
---|
| 24 | }
|
---|
| 25 | code = alphabet && alphabet.indexOf(str.charAt(pos))
|
---|
| 26 | return code > -1 ? code + 76 : ((code = str.charCodeAt(pos) || 0), code < 45 || code > 127) ? code
|
---|
| 27 | : code < 46 ? 65 // -
|
---|
| 28 | : code < 48 ? code - 1
|
---|
| 29 | : code < 58 ? code + 18 // 0-9
|
---|
| 30 | : code < 65 ? code - 11
|
---|
| 31 | : code < 91 ? code + 11 // A-Z
|
---|
| 32 | : code < 97 ? code - 37
|
---|
| 33 | : code < 123 ? code + 5 // a-z
|
---|
| 34 | : code - 63
|
---|
| 35 | }
|
---|
| 36 |
|
---|
| 37 |
|
---|
| 38 | if ((a+="") != (b+="")) for (;codeB;) {
|
---|
| 39 | codeA = getCode(a, posA++)
|
---|
| 40 | codeB = getCode(b, posB++)
|
---|
| 41 |
|
---|
| 42 | if (codeA < 76 && codeB < 76 && codeA > 66 && codeB > 66) {
|
---|
| 43 | codeA = getCode(a, posA, posA)
|
---|
| 44 | codeB = getCode(b, posB, posA = i)
|
---|
| 45 | posB = i
|
---|
| 46 | }
|
---|
| 47 |
|
---|
| 48 | if (codeA != codeB) return (codeA < codeB) ? -1 : 1
|
---|
| 49 | }
|
---|
| 50 | return 0
|
---|
| 51 | }
|
---|
| 52 |
|
---|
| 53 | try {
|
---|
| 54 | module.exports = naturalCompare;
|
---|
| 55 | } catch (e) {
|
---|
| 56 | String.naturalCompare = naturalCompare;
|
---|
| 57 | }
|
---|