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58 lines
1.2 KiB
TypeScript
58 lines
1.2 KiB
TypeScript
// Loaded from https://deno.land/x/segno@v1.1.0/lib/validations/isLatLong.ts
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// @ts-ignore allowing typedoc to build
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import { assertString } from '../helpers/assertString.ts';
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/**
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* @ignore
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*/
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const lat = /^\(?[+-]?(90(\.0+)?|[1-8]?\d(\.\d+)?)$/;
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/**
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* @ignore
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*/
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const long = /^\s?[+-]?(180(\.0+)?|1[0-7]\d(\.\d+)?|\d{1,2}(\.\d+)?)\)?$/;
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/**
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* @ignore
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*/
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const latDMS = /^(([1-8]?\d)\D+([1-5]?\d|60)\D+([1-5]?\d|60)(\.\d+)?|90\D+0\D+0)\D+[NSns]?$/i;
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/**
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* @ignore
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*/
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const longDMS = /^\s*([1-7]?\d{1,2}\D+([1-5]?\d|60)\D+([1-5]?\d|60)(\.\d+)?|180\D+0\D+0)\D+[EWew]?$/i;
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type LatLongOptions = {
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checkDMS?: boolean;
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};
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/**
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* @ignore
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*/
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const defaultLatLongOptions = {
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checkDMS: false,
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};
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export const isLatLong = (str: string, options?: LatLongOptions) => {
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assertString(str);
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options = {
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...defaultLatLongOptions,
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...options,
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};
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if (!str.includes(',')) return false;
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const pair = str.split(',');
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if (
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(pair[0].startsWith('(') && !pair[1].endsWith(')')) ||
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(pair[1].endsWith(')') && !pair[0].startsWith('('))
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)
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return false;
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if (options.checkDMS) {
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return latDMS.test(pair[0]) && longDMS.test(pair[1]);
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}
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return lat.test(pair[0]) && long.test(pair[1]);
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};
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