57 lines
1.6 KiB
TypeScript
57 lines
1.6 KiB
TypeScript
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// Get file and inits
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const csvTZDataU8 = Deno.readFileSync('./tzTable.csv');
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const csvTZData = new TextDecoder().decode(csvTZDataU8);
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const csvRows = csvTZData.split('\r\n');
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const tzMap: Map<string, string> = new Map();
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// Overrides because the world had to be special
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const tzOverrides: Array<Array<string>> = [
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['CDT', '-05:00'],
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['CST', '-06:00'],
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['PST', '-08:00'],
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['IST', '+05:30'],
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];
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const abbrOverrides: Array<string> = tzOverrides.map(tzSet => tzSet[0]);
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// Prefill the map
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for (const override of tzOverrides) {
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tzMap.set(override[0], override[1]);
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}
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// Attempt to add tz to the map
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const attemptAdd = (tzAbbr: string, tzOffset: string) => {
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if (!abbrOverrides.includes(tzAbbr)) {
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if (tzMap.has(tzAbbr) && tzMap.get(tzAbbr) !== tzOffset) {
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console.error(`DOUBLED TZ ABBR WITH DIFF OFFSETS: ${tzAbbr} | ${tzOffset} | ${tzMap.get(tzAbbr)}`)
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} else {
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if (!tzAbbr.includes('+') && !tzAbbr.includes('-')) {
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tzMap.set(tzAbbr, tzOffset);
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}
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}
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}
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};
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// Get each TZ from the csv
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for (const row of csvRows) {
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const [rawSTDOffset, rawDSTOffset, rawSTDAbbr, rawDSTAbbr] = row.replaceAll('?', '-').toUpperCase().split(',');
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const STDOffset = (rawSTDOffset || '');
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const DSTOffset = (rawDSTOffset || '');
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const STDAbbr = (rawSTDAbbr || '');
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const DSTAbbr = (rawDSTAbbr || '');
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attemptAdd(STDAbbr, STDOffset);
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if (STDAbbr !== DSTAbbr) {
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attemptAdd(DSTAbbr, DSTOffset);
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}
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}
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// Log it out to copy to source
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const tzIt = tzMap.entries();
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let tzVal = tzIt.next()
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while (!tzVal.done) {
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if (tzVal.value[0]) {
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console.log(`['${tzVal.value[0]}','${tzVal.value[1]}'],`);
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}
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tzVal = tzIt.next();
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}
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