Mercurial > hg > extraction-interface

comparison geotemco/lib/simile/ajax/scripts/string.js @ 0:b12c99b7c3f0

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commit for previous development
author Zoe Hong <zhong@mpiwg-berlin.mpg.de>
date Mon, 19 Jan 2015 17:13:49 +0100
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-1:000000000000 0:b12c99b7c3f0
1 /*==================================================
2 * String Utility Functions and Constants
3 *==================================================
4 */
5
6 String.prototype.trim = function() {
7 return this.replace(/^\s+|\s+$/g, '');
8 };
9
10 String.prototype.startsWith = function(prefix) {
11 return this.length >= prefix.length && this.substr(0, prefix.length) == prefix;
12 };
13
14 String.prototype.endsWith = function(suffix) {
15 return this.length >= suffix.length && this.substr(this.length - suffix.length) == suffix;
16 };
17
18 String.substitute = function(s, objects) {
19 var result = "";
20 var start = 0;
21 while (start < s.length - 1) {
22 var percent = s.indexOf("%", start);
23 if (percent < 0 || percent == s.length - 1) {
24 break;
25 } else if (percent > start && s.charAt(percent - 1) == "\\") {
26 result += s.substring(start, percent - 1) + "%";
27 start = percent + 1;
28 } else {
29 var n = parseInt(s.charAt(percent + 1));
30 if (isNaN(n) || n >= objects.length) {
31 result += s.substring(start, percent + 2);
32 } else {
33 result += s.substring(start, percent) + objects[n].toString();
34 }
35 start = percent + 2;
36 }
37 }
38
39 if (start < s.length) {
40 result += s.substring(start);
41 }
42 return result;
43 };