Extract location utils from components (#8152)

* extract util functions from MLocationBody

Signed-off-by: Kerry Archibald <kerrya@element.io>

* disassemble mlocationbody

Signed-off-by: Kerry Archibald <kerrya@element.io>

* tidy and add copyrights

Signed-off-by: Kerry Archibald <kerrya@element.io>

* move types and utils from components/location to utils

Signed-off-by: Kerry Archibald <kerrya@element.io>

* i18n

Signed-off-by: Kerry Archibald <kerrya@element.io>

* empty line

Signed-off-by: Kerry Archibald <kerrya@element.io>

src/utils/location/parseGeoUri.ts

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