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916 BJavaScriptView Raw
1function getCodeFromEsriWKT(esri_wkt) {
2 if (!esri_wkt) return;
3 const match = /PROJCS\[\"([^"]+)\"/.exec(esri_wkt);
4 if (!match) return;
5 const name = match[1];
6 if (name.match(/^WGS_1984_UTM_Zone_\d{1,2}(N|S)$/)) {
7 const last_part = name.split("_").pop();
8 const zone = last_part.substring(0, last_part.length - 1);
9 const hemisphere = last_part.substring(last_part.length - 1) == "N" ? 6 : 7;
10 return Number.parseInt("32" + hemisphere + zone);
11 } else if (name.match(/^NAD_1983_UTM_Zone_\d{1,2}N$/)) {
12 const last_part = name.split("_").pop();
13 const zone = last_part.substring(0, last_part.length - 1);
14 return Number.parseInt("269" + zone);
15 }
16}
17
18if (typeof define === "function" && define.amd) {
19 define(function () {
20 return getCodeFromEsriWKT;
21 });
22}
23
24if (typeof module === "object") {
25 module.exports = getCodeFromEsriWKT;
26 module.exports.default = getCodeFromEsriWKT;
27}