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Merge pull request #2168 from umap-project/georsstogeojson-as-esm
chore: use GeoRSStoGeoJSON as ES module
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191 changes: 111 additions & 80 deletions
191
umap/static/umap/vendors/georsstogeojson/GeoRSSToGeoJSON.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,89 +1,120 @@ | ||
| var GeoRSSToGeoJSON = function (dom, options) { | ||
| export function parse(dom, options) { | ||
| const g = { | ||
| type: 'FeatureCollection', | ||
| features: [], | ||
| } | ||
|
|
||
| function get(x, y) { return x.getElementsByTagName(y); } | ||
| function get1(x, y) { var n = get(x, y); return n.length ? n[0] : null; } | ||
| function norm(el) { if (el.normalize) { el.normalize(); } return el; } | ||
| function nodeVal(x) { if (x) {norm(x);} return x && x.firstChild && x.firstChild.nodeValue; } | ||
| function attr(x, y) { return x.getAttribute(y); } | ||
|
|
||
| var g = { | ||
| type: 'FeatureCollection', | ||
| features: [] | ||
| }; | ||
| const items = get(dom, 'item') | ||
| for (const item of Array.from(items)) { | ||
| const feature = processOne(item) | ||
| if (feature) { | ||
| g.features.push(feature) | ||
| } | ||
| } | ||
| return g | ||
| } | ||
|
|
||
| function geom (node) { | ||
| function get(x, y) { | ||
| return x.getElementsByTagName(y) | ||
| } | ||
| function get1(x, y) { | ||
| const n = get(x, y) | ||
| return n.length ? n[0] : null | ||
| } | ||
| function norm(el) { | ||
| if (el.normalize) { | ||
| el.normalize() | ||
| } | ||
| return el | ||
| } | ||
| function nodeVal(x) { | ||
| if (x) { | ||
| norm(x) | ||
| } | ||
| return x?.firstChild?.nodeValue | ||
| } | ||
| function attr(x, y) { | ||
| return x.getAttribute(y) | ||
| } | ||
|
|
||
| function p(c) {return parseFloat(c);} | ||
| function r(c) {return c.reverse().map(p);} // we have latlon we want lonlat | ||
| function e(f) {var _=[]; for (var i=0; i<f.length; i+=2) {_.push(r(f.slice(i, i+2)));} return _;} | ||
| function geom(node) { | ||
| function p(c) { | ||
| return parseFloat(c) | ||
| } | ||
| function r(c) { | ||
| return c.reverse().map(p) | ||
| } // we have latlon we want lonlat | ||
| function e(f) { | ||
| const _ = [] | ||
| for (let i = 0; i < f.length; i += 2) { | ||
| _.push(r(f.slice(i, i + 2))) | ||
| } | ||
| return _ | ||
| } | ||
|
|
||
| var type, coordinates; | ||
| let type | ||
| let coordinates | ||
|
|
||
| NODE = node; | ||
| if (get1(node, 'geo:long')) { | ||
| type = 'Point'; | ||
| coordinates = [p(nodeVal(get1(node, 'geo:long'))), p(nodeVal(get1(node, 'geo:lat')))]; | ||
| } else if (get1(node, 'long')) { | ||
| type = 'Point'; | ||
| coordinates = [p(nodeVal(get1(node, 'long'))), p(nodeVal(get1(node, 'lat')))]; | ||
| } else if (get1(node, 'georss:point')) { | ||
| type = 'Point'; | ||
| coordinates = r(nodeVal(get1(node, 'georss:point')).split(' ')); | ||
| } else if (get1(node, 'point')) { | ||
| type = 'Point'; | ||
| coordinates = r(nodeVal(get1(node, 'point')).split(' ')); | ||
| } else { | ||
| var line = get1(node, 'georss:line'), | ||
| poly = get1(node, 'georss:polygon'); | ||
| if (line || poly) { | ||
| type = line ? 'LineString' : 'Polygon'; | ||
| var tag = line ? 'georss:line' : 'georss:polygon'; | ||
| coordinates = nodeVal(get1(node, tag)).split(' '); | ||
| if (coordinates.length % 2 !== 0) return; | ||
| coordinates = e(coordinates); | ||
| if (poly) { | ||
| coordinates = [coordinates]; | ||
| } | ||
| } | ||
| } | ||
| if (type && coordinates) { | ||
| return { | ||
| type: type, | ||
| coordinates: coordinates | ||
| }; | ||
| } | ||
| if (get1(node, 'geo:long')) { | ||
| type = 'Point' | ||
| coordinates = [ | ||
| p(nodeVal(get1(node, 'geo:long'))), | ||
| p(nodeVal(get1(node, 'geo:lat'))), | ||
| ] | ||
| } else if (get1(node, 'long')) { | ||
| type = 'Point' | ||
| coordinates = [p(nodeVal(get1(node, 'long'))), p(nodeVal(get1(node, 'lat')))] | ||
| } else if (get1(node, 'georss:point')) { | ||
| type = 'Point' | ||
| coordinates = r(nodeVal(get1(node, 'georss:point')).split(' ')) | ||
| } else if (get1(node, 'point')) { | ||
| type = 'Point' | ||
| coordinates = r(nodeVal(get1(node, 'point')).split(' ')) | ||
| } else { | ||
| const line = get1(node, 'georss:line') | ||
| const poly = get1(node, 'georss:polygon') | ||
| if (line || poly) { | ||
| type = line ? 'LineString' : 'Polygon' | ||
| const tag = line ? 'georss:line' : 'georss:polygon' | ||
| coordinates = nodeVal(get1(node, tag)).split(' ') | ||
| if (coordinates.length % 2 !== 0) return | ||
| coordinates = e(coordinates) | ||
| if (poly) { | ||
| coordinates = [coordinates] | ||
| } | ||
| } | ||
|
|
||
| function processOne (node) { | ||
| var geometry = geom(node); | ||
| // TODO collect and fire errors | ||
| if (!geometry) return; | ||
| var f = { | ||
| type: "Feature", | ||
| geometry: geometry, | ||
| properties: { | ||
| title: nodeVal(get1(node, 'title')), | ||
| description: nodeVal(get1(node, 'description')), | ||
| link: nodeVal(get1(node, 'link')), | ||
| } | ||
| }; | ||
| var media = get1(node, 'media:content'), mime; | ||
| if (!media) { | ||
| media = get1(node, 'enclosure'), mime; | ||
| } | ||
| if (media) { | ||
| mime = attr(media, 'type'); | ||
| if (mime.indexOf('image') !== -1) { | ||
| f.properties.img = attr(media, "url"); // How not to invent a key? | ||
| } | ||
| } | ||
| g.features.push(f); | ||
| } | ||
| if (type && coordinates) { | ||
| return { | ||
| type: type, | ||
| coordinates: coordinates, | ||
| } | ||
| } | ||
| } | ||
|
|
||
| var items = get(dom, 'item'); | ||
| for (var i = 0; i < items.length; i++) { | ||
| processOne(items[i]); | ||
| function processOne(node) { | ||
| const geometry = geom(node) | ||
| // TODO collect and fire errors | ||
| if (!geometry) return | ||
| const f = { | ||
| type: 'Feature', | ||
| geometry: geometry, | ||
| properties: { | ||
| title: nodeVal(get1(node, 'title')), | ||
| description: nodeVal(get1(node, 'description')), | ||
| link: nodeVal(get1(node, 'link')), | ||
| }, | ||
| } | ||
| let media = get1(node, 'media:content') | ||
| let mime | ||
| if (!media) { | ||
| media = get1(node, 'enclosure') | ||
| } | ||
| if (media) { | ||
| mime = attr(media, 'type') | ||
| if (mime.indexOf('image') !== -1) { | ||
| f.properties.img = attr(media, 'url') // How not to invent a key? | ||
| } | ||
| return g; | ||
| }; | ||
| if (typeof module !== 'undefined') module.exports = {GeoRSSToGeoJSON: GeoRSSToGeoJSON}; | ||
| } | ||
| return f | ||
| } |
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