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annotate 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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Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*==================================================
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2 * String Utility Functions and Constants
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3 *==================================================
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4 */
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5
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6 String.prototype.trim = function() {
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7 return this.replace(/^\s+|\s+$/g, '');
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8 };
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9
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10 String.prototype.startsWith = function(prefix) {
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11 return this.length >= prefix.length && this.substr(0, prefix.length) == prefix;
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12 };
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13
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14 String.prototype.endsWith = function(suffix) {
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15 return this.length >= suffix.length && this.substr(this.length - suffix.length) == suffix;
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16 };
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17
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18 String.substitute = function(s, objects) {
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19 var result = "";
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20 var start = 0;
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21 while (start < s.length - 1) {
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22 var percent = s.indexOf("%", start);
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23 if (percent < 0 || percent == s.length - 1) {
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24 break;
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25 } else if (percent > start && s.charAt(percent - 1) == "\\") {
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26 result += s.substring(start, percent - 1) + "%";
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27 start = percent + 1;
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28 } else {
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29 var n = parseInt(s.charAt(percent + 1));
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30 if (isNaN(n) || n >= objects.length) {
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31 result += s.substring(start, percent + 2);
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32 } else {
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33 result += s.substring(start, percent) + objects[n].toString();
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34 }
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35 start = percent + 2;
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36 }
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37 }
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38
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39 if (start < s.length) {
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40 result += s.substring(start);
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41 }
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42 return result;
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43 };