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13ddeecfa7
Add utilFetchJson to get around some quirks of d3.json and use it for coreFileFetcher Load real general English locale strings at the beginning of code tests
105 lines
3.4 KiB
JavaScript
105 lines
3.4 KiB
JavaScript
import { utilFetchJson } from '../util/util';
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let _mainFileFetcher = coreFileFetcher(); // singleton
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export { _mainFileFetcher as fileFetcher };
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//
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// coreFileFetcher asynchronously fetches data from JSON files
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//
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export function coreFileFetcher() {
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let _this = {};
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let _inflight = {};
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let _fileMap = {
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'address_formats': 'data/address_formats.min.json',
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'deprecated': 'https://cdn.jsdelivr.net/npm/@openstreetmap/id-tagging-schema@3/dist/deprecated.min.json',
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'discarded': 'https://cdn.jsdelivr.net/npm/@openstreetmap/id-tagging-schema@3/dist/discarded.min.json',
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'imagery': 'data/imagery.min.json',
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'intro_graph': 'data/intro_graph.min.json',
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'keepRight': 'data/keepRight.min.json',
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'languages': 'data/languages.min.json',
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'locales': 'locales/index.min.json',
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'nsi_brands': 'https://cdn.jsdelivr.net/npm/name-suggestion-index@4/dist/brands.min.json',
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'nsi_filters': 'https://cdn.jsdelivr.net/npm/name-suggestion-index@4/dist/filters.min.json',
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'oci_features': 'https://cdn.jsdelivr.net/npm/osm-community-index@3/dist/featureCollection.min.json',
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'oci_resources': 'https://cdn.jsdelivr.net/npm/osm-community-index@3/dist/resources.min.json',
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'preset_categories': 'https://cdn.jsdelivr.net/npm/@openstreetmap/id-tagging-schema@3/dist/preset_categories.min.json',
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'preset_defaults': 'https://cdn.jsdelivr.net/npm/@openstreetmap/id-tagging-schema@3/dist/preset_defaults.min.json',
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'preset_fields': 'https://cdn.jsdelivr.net/npm/@openstreetmap/id-tagging-schema@3/dist/fields.min.json',
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'preset_presets': 'https://cdn.jsdelivr.net/npm/@openstreetmap/id-tagging-schema@3/dist/presets.min.json',
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'phone_formats': 'data/phone_formats.min.json',
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'qa_data': 'data/qa_data.min.json',
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'shortcuts': 'data/shortcuts.min.json',
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'territory_languages': 'data/territory_languages.min.json',
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'wmf_sitematrix': 'https://cdn.jsdelivr.net/npm/wmf-sitematrix@0.1/wikipedia.min.json'
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};
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let _cachedData = {};
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// expose the cache; useful for tests
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_this.cache = () => _cachedData;
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// Returns a Promise to fetch data
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// (resolved with the data if we have it already)
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_this.get = (which) => {
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if (_cachedData[which]) {
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return Promise.resolve(_cachedData[which]);
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}
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const file = _fileMap[which];
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const url = file && _this.asset(file);
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if (!url) {
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return Promise.reject(`Unknown data file for "${which}"`);
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}
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let prom = _inflight[url];
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if (!prom) {
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_inflight[url] = prom = utilFetchJson(url)
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.then(result => {
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delete _inflight[url];
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if (!result) {
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throw new Error(`No data loaded for "${which}"`);
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}
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_cachedData[which] = result;
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return result;
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})
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.catch(err => {
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delete _inflight[url];
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throw err;
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});
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}
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return prom;
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};
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// Accessor for the file map
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_this.fileMap = function(val) {
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if (!arguments.length) return _fileMap;
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_fileMap = val;
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return _this;
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};
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let _assetPath = '';
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_this.assetPath = function(val) {
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if (!arguments.length) return _assetPath;
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_assetPath = val;
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return _this;
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};
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let _assetMap = {};
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_this.assetMap = function(val) {
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if (!arguments.length) return _assetMap;
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_assetMap = val;
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return _this;
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};
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_this.asset = (val) => {
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if (/^http(s)?:\/\//i.test(val)) return val;
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const filename = _assetPath + val;
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return _assetMap[filename] || filename;
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};
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return _this;
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}
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