https://www.hidro.ro/wp-content/plugins/leaftile/public/js/leaflet.shapefile/leaflet.shpfile.js?ver=7.1.2

1'use strict';
2
3/* global cw, shp */
4L.Shapefile = L.GeoJSON.extend({
5  options: {
6    importUrl: 'shp.js'
7  },
8
9  initialize: function(file, options) {
10    L.Util.setOptions(this, options);
11    if (typeof cw !== 'undefined') {
12      /*eslint-disable no-new-func*/
13      if (!options.isArrayBuffer) {
14        this.worker = cw(new Function('data', 'cb', 'importScripts("' + this.options.importUrl + '");shp(data).then(cb);'));
15      } else {
16        this.worker = cw(new Function('data', 'importScripts("' + this.options.importUrl + '"); return shp.parseZip(data);'));
17      }
18      /*eslint-enable no-new-func*/
19    }
20    L.GeoJSON.prototype.initialize.call(this, {
21      features: []
22    }, options);
23    this.addFileData(file);
24  },
25
26  addFileData: function(file) {
27    var self = this;
28    this.fire('data:loading');
29    if (typeof file !== 'string' && !('byteLength' in file)) {
30      var data = this.addData(file);
31      this.fire('data:loaded');
32      return data;
33    }
34    if (!this.worker) {
35      shp(file).then(function(data) {
36        self.addData(data);
37        self.fire('data:loaded');
38      }).catch(function(err) {
39        self.fire('data:error', err);
40      })
41      return this;
42    }
43    var promise;
44    if (this.options.isArrayBufer) {
45      promise = this.worker.data(file, [file]);
46    } else {
47      promise = this.worker.data(cw.makeUrl(file));
48    }
49
50    promise.then(function(data) {
51      self.addData(data);
52      self.fire('data:loaded');
53      self.worker.close();
54    }).then(function() {}, function(err) {
55      self.fire('data:error', err);
56    })
57    return this;
58  }
59});
60
61L.shapefile = function(a, b, c) {
62  return new L.Shapefile(a, b, c);
63};