76b82b4b2b
* Make more code conform to strict null checks * Fix types * Fix tests * Fix remaining test assertions * Iterate PR
45 lines
1.4 KiB
TypeScript
45 lines
1.4 KiB
TypeScript
/*
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Copyright 2022 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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export const parseGeoUri = (uri: string): GeolocationCoordinates | undefined => {
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function parse(s: string): number | null {
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const ret = parseFloat(s);
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if (Number.isNaN(ret)) {
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return null;
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} else {
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return ret;
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}
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}
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const m = uri.match(/^\s*geo:(.*?)\s*$/);
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if (!m) return;
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const parts = m[1].split(";");
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const coords = parts[0].split(",");
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let uncertainty: number | null;
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for (const param of parts.slice(1)) {
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const m = param.match(/u=(.*)/);
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if (m) uncertainty = parse(m[1]);
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}
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return {
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latitude: parse(coords[0]),
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longitude: parse(coords[1]),
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altitude: parse(coords[2]),
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accuracy: uncertainty,
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altitudeAccuracy: null,
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heading: null,
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speed: null,
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};
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};
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